Merge tag 'pm+acpi-4.4-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI updates from Rafael Wysocki:
 "Quite a new features are included this time.

  First off, the Collaborative Processor Performance Control interface
  (version 2) defined by ACPI will now be supported on ARM64 along with
  a cpufreq frontend for CPU performance scaling.

  Second, ACPI gets a new infrastructure for the early probing of IRQ
  chips and clock sources (along the lines of the existing similar
  mechanism for DT).

  Next, the ACPI core and the generic device properties API will now
  support a recently introduced hierarchical properties extension of the
  _DSD (Device Specific Data) ACPI device configuration object.  If the
  ACPI platform firmware uses that extension to organize device
  properties in a hierarchical way, the kernel will automatically handle
  it and make those properties available to device drivers via the
  generic device properties API.

  It also will be possible to build the ACPICA's AML interpreter
  debugger into the kernel now and use that to diagnose AML-related
  problems more efficiently.  In the future, this should make it
  possible to single-step AML execution and do similar things.
  Interesting stuff, although somewhat experimental at this point.

  Finally, the PM core gets a new mechanism that can be used by device
  drivers to distinguish between suspend-to-RAM (based on platform
  firmware support) and suspend-to-idle (or other variants of system
  suspend the platform firmware is not involved in) and possibly
  optimize their device suspend/resume handling accordingly.

  In addition to that, some existing features are re-organized quite
  substantially.

  First, the ACPI-based handling of PCI host bridges on x86 and ia64 is
  unified and the common code goes into the ACPI core (so as to reduce
  code duplication and eliminate non-essential differences between the
  two architectures in that area).

  Second, the Operating Performance Points (OPP) framework is
  reorganized to make the code easier to find and follow.

  Next, the cpufreq core's sysfs interface is reorganized to get rid of
  the "primary CPU" concept for configurations in which the same
  performance scaling settings are shared between multiple CPUs.

  Finally, some interfaces that aren't necessary any more are dropped
  from the generic power domains framework.

  On top of the above we have some minor extensions, cleanups and bug
  fixes in multiple places, as usual.

  Specifics:

   - ACPICA update to upstream revision 20150930 (Bob Moore, Lv Zheng).

     The most significant change is to allow the AML debugger to be
     built into the kernel.  On top of that there is an update related
     to the NFIT table (the ACPI persistent memory interface) and a few
     fixes and cleanups.

   - ACPI CPPC2 (Collaborative Processor Performance Control v2) support
     along with a cpufreq frontend (Ashwin Chaugule).

     This can only be enabled on ARM64 at this point.

   - New ACPI infrastructure for the early probing of IRQ chips and
     clock sources (Marc Zyngier).

   - Support for a new hierarchical properties extension of the ACPI
     _DSD (Device Specific Data) device configuration object allowing
     the kernel to handle hierarchical properties (provided by the
     platform firmware this way) automatically and make them available
     to device drivers via the generic device properties interface
     (Rafael Wysocki).

   - Generic device properties API extension to obtain an index of
     certain string value in an array of strings, along the lines of
     of_property_match_string(), but working for all of the supported
     firmware node types, and support for the "dma-names" device
     property based on it (Mika Westerberg).

   - ACPI core fix to parse the MADT (Multiple APIC Description Table)
     entries in the order expected by platform firmware (and mandated by
     the specification) to avoid confusion on systems with more than 255
     logical CPUs (Lukasz Anaczkowski).

   - Consolidation of the ACPI-based handling of PCI host bridges on x86
     and ia64 (Jiang Liu).

   - ACPI core fixes to ensure that the correct IRQ number is used to
     represent the SCI (System Control Interrupt) in the cases when it
     has been re-mapped (Chen Yu).

   - New ACPI backlight quirk for Lenovo IdeaPad S405 (Hans de Goede).

   - ACPI EC driver fixes (Lv Zheng).

   - Assorted ACPI fixes and cleanups (Dan Carpenter, Insu Yun, Jiri
     Kosina, Rami Rosen, Rasmus Villemoes).

   - New mechanism in the PM core allowing drivers to check if the
     platform firmware is going to be involved in the upcoming system
     suspend or if it has been involved in the suspend the system is
     resuming from at the moment (Rafael Wysocki).

     This should allow drivers to optimize their suspend/resume handling
     in some cases and the changes include a couple of users of it (the
     i8042 input driver, PCI PM).

   - PCI PM fix to prevent runtime-suspended devices with PME enabled
     from being resumed during system suspend even if they aren't
     configured to wake up the system from sleep (Rafael Wysocki).

   - New mechanism to report the number of a wakeup IRQ that woke up the
     system from sleep last time (Alexandra Yates).

   - Removal of unused interfaces from the generic power domains
     framework and fixes related to latency measurements in that code
     (Ulf Hansson, Daniel Lezcano).

   - cpufreq core sysfs interface rework to make it handle CPUs that
     share performance scaling settings (represented by a common cpufreq
     policy object) more symmetrically (Viresh Kumar).

     This should help to simplify the CPU offline/online handling among
     other things.

   - cpufreq core fixes and cleanups (Viresh Kumar).

   - intel_pstate fixes related to the Turbo Activation Ratio (TAR)
     mechanism on client platforms which causes the turbo P-states range
     to vary depending on platform firmware settings (Srinivas
     Pandruvada).

   - intel_pstate sysfs interface fix (Prarit Bhargava).

   - Assorted cpufreq driver (imx, tegra20, powernv, integrator) fixes
     and cleanups (Bai Ping, Bartlomiej Zolnierkiewicz, Shilpasri G
     Bhat, Luis de Bethencourt).

   - cpuidle mvebu driver cleanups (Russell King).

   - OPP (Operating Performance Points) framework code reorganization to
     make it more maintainable (Viresh Kumar).

   - Intel Broxton support for the RAPL (Running Average Power Limits)
     power capping driver (Amy Wiles).

   - Assorted power management code fixes and cleanups (Dan Carpenter,
     Geert Uytterhoeven, Geliang Tang, Luis de Bethencourt, Rasmus
     Villemoes)"

* tag 'pm+acpi-4.4-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (108 commits)
  cpufreq: postfix policy directory with the first CPU in related_cpus
  cpufreq: create cpu/cpufreq/policyX directories
  cpufreq: remove cpufreq_sysfs_{create|remove}_file()
  cpufreq: create cpu/cpufreq at boot time
  cpufreq: Use cpumask_copy instead of cpumask_or to copy a mask
  cpufreq: ondemand: Drop unnecessary locks from update_sampling_rate()
  PM / Domains: Merge measurements for PM QoS device latencies
  PM / Domains: Don't measure ->start|stop() latency in system PM callbacks
  PM / clk: Fix broken build due to non-matching code and header #ifdefs
  ACPI / Documentation: add copy_dsdt to ACPI format options
  ACPI / sysfs: correctly check failing memory allocation
  ACPI / video: Add a quirk to force native backlight on Lenovo IdeaPad S405
  ACPI / CPPC: Fix potential memory leak
  ACPI / CPPC: signedness bug in register_pcc_channel()
  ACPI / PAD: power_saving_thread() is not freezable
  ACPI / PM: Fix incorrect wakeup IRQ setting during suspend-to-idle
  ACPI: Using correct irq when waiting for events
  ACPI: Use correct IRQ when uninstalling ACPI interrupt handler
  cpuidle: mvebu: disable the bind/unbind attributes and use builtin_platform_driver
  cpuidle: mvebu: clean up multiple platform drivers
  ...

118 files changed, 13226 insertions, 1459 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 5d1015c26ff4..25dbb76c02cc 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -57,6 +57,15 @@ config ACPI_SYSTEM_POWER_STATES_SUPPORT
 config ACPI_CCA_REQUIRED
 	bool
 
+config ACPI_DEBUGGER
+	bool "In-kernel debugger (EXPERIMENTAL)"
+	select ACPI_DEBUG
+	help
+	  Enable in-kernel debugging facilities: statistics, internal
+	  object dump, single step control method execution.
+	  This is still under development, currently enabling this only
+	  results in the compilation of the ACPICA debugger files.
+
 config ACPI_SLEEP
 	bool
 	depends on SUSPEND || HIBERNATION
@@ -197,11 +206,25 @@ config ACPI_PROCESSOR_IDLE
 	bool
 	select CPU_IDLE
 
+config ACPI_CPPC_LIB
+	bool
+	depends on ACPI_PROCESSOR
+	depends on !ACPI_CPU_FREQ_PSS
+	select MAILBOX
+	select PCC
+	help
+	  If this option is enabled, this file implements common functionality
+	  to parse CPPC tables as described in the ACPI 5.1+ spec. The
+	  routines implemented are meant to be used by other
+	  drivers to control CPU performance using CPPC semantics.
+	  If your platform does not support CPPC in firmware,
+	  leave this option disabled.
+
 config ACPI_PROCESSOR
 	tristate "Processor"
-	depends on X86 || IA64
-	select ACPI_PROCESSOR_IDLE
-	select ACPI_CPU_FREQ_PSS
+	depends on X86 || IA64 || ARM64
+	select ACPI_PROCESSOR_IDLE if X86 || IA64
+	select ACPI_CPU_FREQ_PSS if X86 || IA64
 	default y
 	help
 	  This driver adds support for the ACPI Processor package. It is required
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index b5e7cd8a9c71..675eaf337178 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -78,6 +78,7 @@ obj-$(CONFIG_ACPI_HED)		+= hed.o
 obj-$(CONFIG_ACPI_EC_DEBUGFS)	+= ec_sys.o
 obj-$(CONFIG_ACPI_CUSTOM_METHOD)+= custom_method.o
 obj-$(CONFIG_ACPI_BGRT)		+= bgrt.o
+obj-$(CONFIG_ACPI_CPPC_LIB)	+= cppc_acpi.o
 
 # processor has its own "processor." module_param namespace
 processor-y			:= processor_driver.o
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index f51bd0d0bc17..f9e0d09f7c66 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -664,7 +664,7 @@ static struct dev_pm_domain acpi_lpss_pm_domain = {
 #ifdef CONFIG_PM
 #ifdef CONFIG_PM_SLEEP
 		.prepare = acpi_subsys_prepare,
-		.complete = acpi_subsys_complete,
+		.complete = pm_complete_with_resume_check,
 		.suspend = acpi_subsys_suspend,
 		.suspend_late = acpi_lpss_suspend_late,
 		.resume_early = acpi_lpss_resume_early,
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index ae307ff36acb..8ea8211b2d58 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -148,8 +148,6 @@ static int power_saving_thread(void *data)
 	while (!kthread_should_stop()) {
 		unsigned long expire_time;
 
-		try_to_freeze();
-
 		/* round robin to cpus */
 		expire_time = last_jiffies + round_robin_time * HZ;
 		if (time_before(expire_time, jiffies)) {
diff --git a/drivers/acpi/acpi_pnp.c b/drivers/acpi/acpi_pnp.c
index c58940b231d6..48fc3ad13a4b 100644
--- a/drivers/acpi/acpi_pnp.c
+++ b/drivers/acpi/acpi_pnp.c
@@ -316,7 +316,7 @@ static const struct acpi_device_id acpi_pnp_device_ids[] = {
 	{""},
 };
 
-static bool matching_id(char *idstr, char *list_id)
+static bool matching_id(const char *idstr, const char *list_id)
 {
 	int i;
 
@@ -333,7 +333,7 @@ static bool matching_id(char *idstr, char *list_id)
 	return true;
 }
 
-static bool acpi_pnp_match(char *idstr, const struct acpi_device_id **matchid)
+static bool acpi_pnp_match(const char *idstr, const struct acpi_device_id **matchid)
 {
 	const struct acpi_device_id *devid;
 
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 985b8a83184e..6979186dbd4b 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -164,6 +164,24 @@ static int acpi_processor_errata(void)
    -------------------------------------------------------------------------- */
 
 #ifdef CONFIG_ACPI_HOTPLUG_CPU
+int __weak acpi_map_cpu(acpi_handle handle,
+		phys_cpuid_t physid, int *pcpu)
+{
+	return -ENODEV;
+}
+
+int __weak acpi_unmap_cpu(int cpu)
+{
+	return -ENODEV;
+}
+
+int __weak arch_register_cpu(int cpu)
+{
+	return -ENODEV;
+}
+
+void __weak arch_unregister_cpu(int cpu) {}
+
 static int acpi_processor_hotadd_init(struct acpi_processor *pr)
 {
 	unsigned long long sta;
diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index fedcc16b56cc..885936f79542 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -123,7 +123,6 @@ acpi-y +=		\
 	rsaddr.o	\
 	rscalc.o	\
 	rscreate.o	\
-	rsdump.o	\
 	rsdumpinfo.o	\
 	rsinfo.o	\
 	rsio.o		\
@@ -178,7 +177,24 @@ acpi-y +=		\
 	utxferror.o	\
 	utxfmutex.o
 
+acpi-$(CONFIG_ACPI_DEBUGGER) +=	\
+	dbcmds.o		\
+	dbconvert.o		\
+	dbdisply.o		\
+	dbexec.o		\
+	dbhistry.o		\
+	dbinput.o		\
+	dbmethod.o		\
+	dbnames.o		\
+	dbobject.o		\
+	dbstats.o		\
+	dbutils.o		\
+	dbxface.o		\
+	rsdump.o		\
+
 acpi-$(ACPI_FUTURE_USAGE) +=	\
+	dbfileio.o		\
+	dbtest.o		\
 	utcache.o		\
 	utfileio.o		\
 	utprint.o		\
diff --git a/drivers/acpi/acpica/acapps.h b/drivers/acpi/acpica/acapps.h
index e9f0833e818d..e4cc48fbf4ee 100644
--- a/drivers/acpi/acpica/acapps.h
+++ b/drivers/acpi/acpica/acapps.h
@@ -88,7 +88,7 @@
 	acpi_os_printf (" %-18s%s\n", name, description);
 
 #define FILE_SUFFIX_DISASSEMBLY     "dsl"
-#define ACPI_TABLE_FILE_SUFFIX      ".dat"
+#define FILE_SUFFIX_BINARY_TABLE    ".dat"	/* Needs the dot */
 
 /*
  * getopt
diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h
index eb2e926d8218..c928ba494c40 100644
--- a/drivers/acpi/acpica/acdebug.h
+++ b/drivers/acpi/acpica/acdebug.h
@@ -44,6 +44,12 @@
 #ifndef __ACDEBUG_H__
 #define __ACDEBUG_H__
 
+/* The debugger is used in conjunction with the disassembler most of time */
+
+#ifdef ACPI_DISASSEMBLER
+#include "acdisasm.h"
+#endif
+
 #define ACPI_DEBUG_BUFFER_SIZE  0x4000	/* 16K buffer for return objects */
 
 struct acpi_db_command_info {
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 4dde37c3d8fc..faa97604d878 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -325,9 +325,9 @@ ACPI_GLOBAL(struct acpi_external_file *, acpi_gbl_external_file_list);
 
 #ifdef ACPI_DEBUGGER
 
-ACPI_INIT_GLOBAL(u8, acpi_gbl_db_terminate_threads, FALSE);
 ACPI_INIT_GLOBAL(u8, acpi_gbl_abort_method, FALSE);
 ACPI_INIT_GLOBAL(u8, acpi_gbl_method_executing, FALSE);
+ACPI_INIT_GLOBAL(acpi_thread_id, acpi_gbl_db_thread_id, ACPI_INVALID_THREAD_ID);
 
 ACPI_GLOBAL(u8, acpi_gbl_db_opt_no_ini_methods);
 ACPI_GLOBAL(u8, acpi_gbl_db_opt_no_region_support);
@@ -337,6 +337,8 @@ ACPI_GLOBAL(char *, acpi_gbl_db_filename);
 ACPI_GLOBAL(u32, acpi_gbl_db_debug_level);
 ACPI_GLOBAL(u32, acpi_gbl_db_console_debug_level);
 ACPI_GLOBAL(struct acpi_namespace_node *, acpi_gbl_db_scope_node);
+ACPI_GLOBAL(u8, acpi_gbl_db_terminate_loop);
+ACPI_GLOBAL(u8, acpi_gbl_db_threads_terminated);
 
 ACPI_GLOBAL(char *, acpi_gbl_db_args[ACPI_DEBUGGER_MAX_ARGS]);
 ACPI_GLOBAL(acpi_object_type, acpi_gbl_db_arg_types[ACPI_DEBUGGER_MAX_ARGS]);
@@ -358,6 +360,9 @@ ACPI_GLOBAL(u16, acpi_gbl_node_type_count_misc);
 ACPI_GLOBAL(u32, acpi_gbl_num_nodes);
 ACPI_GLOBAL(u32, acpi_gbl_num_objects);
 
+ACPI_GLOBAL(acpi_mutex, acpi_gbl_db_command_ready);
+ACPI_GLOBAL(acpi_mutex, acpi_gbl_db_command_complete);
+
 #endif				/* ACPI_DEBUGGER */
 
 /*****************************************************************************
diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h
index e820ed8f173f..e9e936e78154 100644
--- a/drivers/acpi/acpica/acinterp.h
+++ b/drivers/acpi/acpica/acinterp.h
@@ -397,12 +397,10 @@ void
 acpi_ex_dump_operands(union acpi_operand_object **operands,
 		      const char *opcode_name, u32 num_opcodes);
 
-#ifdef	ACPI_FUTURE_USAGE
 void
 acpi_ex_dump_object_descriptor(union acpi_operand_object *object, u32 flags);
 
 void acpi_ex_dump_namespace_node(struct acpi_namespace_node *node, u32 flags);
-#endif				/* ACPI_FUTURE_USAGE */
 
 /*
  * exnames - AML namestring support
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 6f708267ad8c..e1dd784d8515 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -83,10 +83,8 @@ union acpi_parse_object;
 #define ACPI_MTX_EVENTS                 3	/* Data for ACPI events */
 #define ACPI_MTX_CACHES                 4	/* Internal caches, general purposes */
 #define ACPI_MTX_MEMORY                 5	/* Debug memory tracking lists */
-#define ACPI_MTX_DEBUG_CMD_COMPLETE     6	/* AML debugger */
-#define ACPI_MTX_DEBUG_CMD_READY        7	/* AML debugger */
 
-#define ACPI_MAX_MUTEX                  7
+#define ACPI_MAX_MUTEX                  5
 #define ACPI_NUM_MUTEX                  ACPI_MAX_MUTEX+1
 
 /* Lock structure for reader/writer interfaces */
@@ -111,6 +109,14 @@ struct acpi_rw_lock {
 
 #define ACPI_MUTEX_NOT_ACQUIRED         (acpi_thread_id) 0
 
+/* This Thread ID means an invalid thread ID */
+
+#ifdef ACPI_OS_INVALID_THREAD_ID
+#define ACPI_INVALID_THREAD_ID          ACPI_OS_INVALID_THREAD_ID
+#else
+#define ACPI_INVALID_THREAD_ID          ((acpi_thread_id) 0xFFFFFFFF)
+#endif
+
 /* Table for the global mutexes */
 
 struct acpi_mutex_info {
@@ -287,13 +293,17 @@ acpi_status(*acpi_internal_method) (struct acpi_walk_state * walk_state);
 #define ACPI_BTYPE_BUFFER_FIELD         0x00002000
 #define ACPI_BTYPE_DDB_HANDLE           0x00004000
 #define ACPI_BTYPE_DEBUG_OBJECT         0x00008000
-#define ACPI_BTYPE_REFERENCE            0x00010000
+#define ACPI_BTYPE_REFERENCE_OBJECT     0x00010000	/* From Index(), ref_of(), etc (type6_opcodes) */
 #define ACPI_BTYPE_RESOURCE             0x00020000
+#define ACPI_BTYPE_NAMED_REFERENCE      0x00040000	/* Generic unresolved Name or Namepath */
 
 #define ACPI_BTYPE_COMPUTE_DATA         (ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER)
 
 #define ACPI_BTYPE_DATA                 (ACPI_BTYPE_COMPUTE_DATA  | ACPI_BTYPE_PACKAGE)
-#define ACPI_BTYPE_DATA_REFERENCE       (ACPI_BTYPE_DATA | ACPI_BTYPE_REFERENCE | ACPI_BTYPE_DDB_HANDLE)
+
+	/* Used by Copy, de_ref_of, Store, Printf, Fprintf */
+
+#define ACPI_BTYPE_DATA_REFERENCE       (ACPI_BTYPE_DATA | ACPI_BTYPE_REFERENCE_OBJECT | ACPI_BTYPE_DDB_HANDLE)
 #define ACPI_BTYPE_DEVICE_OBJECTS       (ACPI_BTYPE_DEVICE | ACPI_BTYPE_THERMAL | ACPI_BTYPE_PROCESSOR)
 #define ACPI_BTYPE_OBJECTS_AND_REFS     0x0001FFFF	/* ARG or LOCAL */
 #define ACPI_BTYPE_ALL_OBJECTS          0x0000FFFF
@@ -848,7 +858,7 @@ struct acpi_parse_state {
 #define ACPI_PARSEOP_PARAMLIST          0x02
 #define ACPI_PARSEOP_EMPTY_TERMLIST     0x04
 #define ACPI_PARSEOP_PREDEF_CHECKED     0x08
-#define ACPI_PARSEOP_SPECIAL            0x10
+#define ACPI_PARSEOP_CLOSING_PAREN      0x10
 #define ACPI_PARSEOP_COMPOUND           0x20
 #define ACPI_PARSEOP_ASSIGNMENT         0x40
 
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index ea0d9076d408..5d261c942a0d 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -193,9 +193,7 @@ acpi_ns_convert_to_resource(union acpi_operand_object *original_object,
 /*
  * nsdump - Namespace dump/print utilities
  */
-#ifdef	ACPI_FUTURE_USAGE
 void acpi_ns_dump_tables(acpi_handle search_base, u32 max_depth);
-#endif				/* ACPI_FUTURE_USAGE */
 
 void acpi_ns_dump_entry(acpi_handle handle, u32 debug_level);
 
@@ -208,7 +206,6 @@ acpi_status
 acpi_ns_dump_one_object(acpi_handle obj_handle,
 			u32 level, void *context, void **return_value);
 
-#ifdef	ACPI_FUTURE_USAGE
 void
 acpi_ns_dump_objects(acpi_object_type type,
 		     u8 display_type,
@@ -220,7 +217,6 @@ acpi_ns_dump_object_paths(acpi_object_type type,
 			  u8 display_type,
 			  u32 max_depth,
 			  acpi_owner_id owner_id, acpi_handle start_handle);
-#endif				/* ACPI_FUTURE_USAGE */
 
 /*
  * nseval - Namespace evaluation functions
diff --git a/drivers/acpi/acpica/acopcode.h b/drivers/acpi/acpica/acopcode.h
index fd85ad05a24a..f9acf92fa0bc 100644
--- a/drivers/acpi/acpica/acopcode.h
+++ b/drivers/acpi/acpica/acopcode.h
@@ -211,7 +211,7 @@
 #define ARGI_ARG4                       ARG_NONE
 #define ARGI_ARG5                       ARG_NONE
 #define ARGI_ARG6                       ARG_NONE
-#define ARGI_BANK_FIELD_OP              ARGI_INVALID_OPCODE
+#define ARGI_BANK_FIELD_OP              ARGI_LIST1 (ARGI_INTEGER)
 #define ARGI_BIT_AND_OP                 ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_TARGETREF)
 #define ARGI_BIT_NAND_OP                ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_TARGETREF)
 #define ARGI_BIT_NOR_OP                 ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_TARGETREF)
@@ -307,7 +307,7 @@
 #define ARGI_SLEEP_OP                   ARGI_LIST1 (ARGI_INTEGER)
 #define ARGI_STALL_OP                   ARGI_LIST1 (ARGI_INTEGER)
 #define ARGI_STATICSTRING_OP            ARGI_INVALID_OPCODE
-#define ARGI_STORE_OP                   ARGI_LIST2 (ARGI_DATAREFOBJ, ARGI_TARGETREF)
+#define ARGI_STORE_OP                   ARGI_LIST2 (ARGI_DATAREFOBJ, ARGI_STORE_TARGET)
 #define ARGI_STRING_OP                  ARGI_INVALID_OPCODE
 #define ARGI_SUBTRACT_OP                ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_TARGETREF)
 #define ARGI_THERMAL_ZONE_OP            ARGI_INVALID_OPCODE
diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h
index 6021ccfb0b1c..8fc8c7cea879 100644
--- a/drivers/acpi/acpica/acparser.h
+++ b/drivers/acpi/acpica/acparser.h
@@ -194,10 +194,8 @@ union acpi_parse_object *acpi_ps_find(union acpi_parse_object *scope,
 
 union acpi_parse_object *acpi_ps_get_arg(union acpi_parse_object *op, u32 argn);
 
-#ifdef	ACPI_FUTURE_USAGE
 union acpi_parse_object *acpi_ps_get_depth_next(union acpi_parse_object *origin,
 						union acpi_parse_object *op);
-#endif				/* ACPI_FUTURE_USAGE */
 
 /*
  * pswalk - parse tree walk routines
@@ -235,9 +233,7 @@ void acpi_ps_free_op(union acpi_parse_object *op);
 
 u8 acpi_ps_is_leading_char(u32 c);
 
-#ifdef	ACPI_FUTURE_USAGE
 u32 acpi_ps_get_name(union acpi_parse_object *op);
-#endif				/* ACPI_FUTURE_USAGE */
 
 void acpi_ps_set_name(union acpi_parse_object *op, u32 name);
 
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index fb2aa5066f3f..8b8fef6cc32d 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -635,9 +635,7 @@ void
 acpi_ut_free_and_track(void *address,
 		       u32 component, const char *module, u32 line);
 
-#ifdef	ACPI_FUTURE_USAGE
 void acpi_ut_dump_allocation_info(void);
-#endif				/* ACPI_FUTURE_USAGE */
 
 void acpi_ut_dump_allocations(u32 component, const char *module);
 
diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h
index be9fd009cb28..883f20cfa698 100644
--- a/drivers/acpi/acpica/amlcode.h
+++ b/drivers/acpi/acpica/amlcode.h
@@ -277,14 +277,15 @@
 #define ARGI_TARGETREF              0x0F	/* Target, subject to implicit conversion */
 #define ARGI_FIXED_TARGET           0x10	/* Target, no implicit conversion */
 #define ARGI_SIMPLE_TARGET          0x11	/* Name, Local, Arg -- no implicit conversion */
+#define ARGI_STORE_TARGET           0x12	/* Target for store is TARGETREF + package objects */
 
 /* Multiple/complex types */
 
-#define ARGI_DATAOBJECT             0x12	/* Buffer, String, package or reference to a node - Used only by size_of operator */
-#define ARGI_COMPLEXOBJ             0x13	/* Buffer, String, or package (Used by INDEX op only) */
-#define ARGI_REF_OR_STRING          0x14	/* Reference or String (Used by DEREFOF op only) */
-#define ARGI_REGION_OR_BUFFER       0x15	/* Used by LOAD op only */
-#define ARGI_DATAREFOBJ             0x16
+#define ARGI_DATAOBJECT             0x13	/* Buffer, String, package or reference to a node - Used only by size_of operator */
+#define ARGI_COMPLEXOBJ             0x14	/* Buffer, String, or package (Used by INDEX op only) */
+#define ARGI_REF_OR_STRING          0x15	/* Reference or String (Used by DEREFOF op only) */
+#define ARGI_REGION_OR_BUFFER       0x16	/* Used by LOAD op only */
+#define ARGI_DATAREFOBJ             0x17
 
 /* Note: types above can expand to 0x1F maximum */
 
diff --git a/drivers/acpi/acpica/dbcmds.c b/drivers/acpi/acpica/dbcmds.c
new file mode 100644
index 000000000000..30414b3d7fdd
--- /dev/null
+++ b/drivers/acpi/acpica/dbcmds.c
@@ -0,0 +1,1187 @@
+/*******************************************************************************
+ *
+ * Module Name: dbcmds - Miscellaneous debug commands and output routines
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acdebug.h"
+#include "acnamesp.h"
+#include "acresrc.h"
+#include "actables.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbcmds")
+
+/* Local prototypes */
+static void
+acpi_dm_compare_aml_resources(u8 *aml1_buffer,
+			      acpi_rsdesc_size aml1_buffer_length,
+			      u8 *aml2_buffer,
+			      acpi_rsdesc_size aml2_buffer_length);
+
+static acpi_status
+acpi_dm_test_resource_conversion(struct acpi_namespace_node *node, char *name);
+
+static acpi_status
+acpi_db_resource_callback(struct acpi_resource *resource, void *context);
+
+static acpi_status
+acpi_db_device_resources(acpi_handle obj_handle,
+			 u32 nesting_level, void *context, void **return_value);
+
+static void acpi_db_do_one_sleep_state(u8 sleep_state);
+
+static char *acpi_db_trace_method_name = NULL;
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_convert_to_node
+ *
+ * PARAMETERS:  in_string           - String to convert
+ *
+ * RETURN:      Pointer to a NS node
+ *
+ * DESCRIPTION: Convert a string to a valid NS pointer. Handles numeric or
+ *              alphanumeric strings.
+ *
+ ******************************************************************************/
+
+struct acpi_namespace_node *acpi_db_convert_to_node(char *in_string)
+{
+	struct acpi_namespace_node *node;
+	acpi_size address;
+
+	if ((*in_string >= 0x30) && (*in_string <= 0x39)) {
+
+		/* Numeric argument, convert */
+
+		address = strtoul(in_string, NULL, 16);
+		node = ACPI_TO_POINTER(address);
+		if (!acpi_os_readable(node, sizeof(struct acpi_namespace_node))) {
+			acpi_os_printf("Address %p is invalid", node);
+			return (NULL);
+		}
+
+		/* Make sure pointer is valid NS node */
+
+		if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
+			acpi_os_printf
+			    ("Address %p is not a valid namespace node [%s]\n",
+			     node, acpi_ut_get_descriptor_name(node));
+			return (NULL);
+		}
+	} else {
+		/*
+		 * Alpha argument: The parameter is a name string that must be
+		 * resolved to a Namespace object.
+		 */
+		node = acpi_db_local_ns_lookup(in_string);
+		if (!node) {
+			acpi_os_printf
+			    ("Could not find [%s] in namespace, defaulting to root node\n",
+			     in_string);
+			node = acpi_gbl_root_node;
+		}
+	}
+
+	return (node);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_sleep
+ *
+ * PARAMETERS:  object_arg          - Desired sleep state (0-5). NULL means
+ *                                    invoke all possible sleep states.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Simulate sleep/wake sequences
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_sleep(char *object_arg)
+{
+	u8 sleep_state;
+	u32 i;
+
+	ACPI_FUNCTION_TRACE(acpi_db_sleep);
+
+	/* Null input (no arguments) means to invoke all sleep states */
+
+	if (!object_arg) {
+		acpi_os_printf("Invoking all possible sleep states, 0-%d\n",
+			       ACPI_S_STATES_MAX);
+
+		for (i = 0; i <= ACPI_S_STATES_MAX; i++) {
+			acpi_db_do_one_sleep_state((u8)i);
+		}
+
+		return_ACPI_STATUS(AE_OK);
+	}
+
+	/* Convert argument to binary and invoke the sleep state */
+
+	sleep_state = (u8)strtoul(object_arg, NULL, 0);
+	acpi_db_do_one_sleep_state(sleep_state);
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_do_one_sleep_state
+ *
+ * PARAMETERS:  sleep_state         - Desired sleep state (0-5)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Simulate a sleep/wake sequence
+ *
+ ******************************************************************************/
+
+static void acpi_db_do_one_sleep_state(u8 sleep_state)
+{
+	acpi_status status;
+	u8 sleep_type_a;
+	u8 sleep_type_b;
+
+	/* Validate parameter */
+
+	if (sleep_state > ACPI_S_STATES_MAX) {
+		acpi_os_printf("Sleep state %d out of range (%d max)\n",
+			       sleep_state, ACPI_S_STATES_MAX);
+		return;
+	}
+
+	acpi_os_printf("\n---- Invoking sleep state S%d (%s):\n",
+		       sleep_state, acpi_gbl_sleep_state_names[sleep_state]);
+
+	/* Get the values for the sleep type registers (for display only) */
+
+	status =
+	    acpi_get_sleep_type_data(sleep_state, &sleep_type_a, &sleep_type_b);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not evaluate [%s] method, %s\n",
+			       acpi_gbl_sleep_state_names[sleep_state],
+			       acpi_format_exception(status));
+		return;
+	}
+
+	acpi_os_printf
+	    ("Register values for sleep state S%d: Sleep-A: %.2X, Sleep-B: %.2X\n",
+	     sleep_state, sleep_type_a, sleep_type_b);
+
+	/* Invoke the various sleep/wake interfaces */
+
+	acpi_os_printf("**** Sleep: Prepare to sleep (S%d) ****\n",
+		       sleep_state);
+	status = acpi_enter_sleep_state_prep(sleep_state);
+	if (ACPI_FAILURE(status)) {
+		goto error_exit;
+	}
+
+	acpi_os_printf("**** Sleep: Going to sleep (S%d) ****\n", sleep_state);
+	status = acpi_enter_sleep_state(sleep_state);
+	if (ACPI_FAILURE(status)) {
+		goto error_exit;
+	}
+
+	acpi_os_printf("**** Wake: Prepare to return from sleep (S%d) ****\n",
+		       sleep_state);
+	status = acpi_leave_sleep_state_prep(sleep_state);
+	if (ACPI_FAILURE(status)) {
+		goto error_exit;
+	}
+
+	acpi_os_printf("**** Wake: Return from sleep (S%d) ****\n",
+		       sleep_state);
+	status = acpi_leave_sleep_state(sleep_state);
+	if (ACPI_FAILURE(status)) {
+		goto error_exit;
+	}
+
+	return;
+
+error_exit:
+	ACPI_EXCEPTION((AE_INFO, status, "During invocation of sleep state S%d",
+			sleep_state));
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_locks
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display information about internal mutexes.
+ *
+ ******************************************************************************/
+
+void acpi_db_display_locks(void)
+{
+	u32 i;
+
+	for (i = 0; i < ACPI_MAX_MUTEX; i++) {
+		acpi_os_printf("%26s : %s\n", acpi_ut_get_mutex_name(i),
+			       acpi_gbl_mutex_info[i].thread_id ==
+			       ACPI_MUTEX_NOT_ACQUIRED ? "Locked" : "Unlocked");
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_table_info
+ *
+ * PARAMETERS:  table_arg           - Name of table to be displayed
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display information about loaded tables. Current
+ *              implementation displays all loaded tables.
+ *
+ ******************************************************************************/
+
+void acpi_db_display_table_info(char *table_arg)
+{
+	u32 i;
+	struct acpi_table_desc *table_desc;
+	acpi_status status;
+
+	/* Header */
+
+	acpi_os_printf("Idx ID  Status Type                    "
+		       "TableHeader (Sig, Address, Length, Misc)\n");
+
+	/* Walk the entire root table list */
+
+	for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
+		table_desc = &acpi_gbl_root_table_list.tables[i];
+
+		/* Index and Table ID */
+
+		acpi_os_printf("%3u %.2u ", i, table_desc->owner_id);
+
+		/* Decode the table flags */
+
+		if (!(table_desc->flags & ACPI_TABLE_IS_LOADED)) {
+			acpi_os_printf("NotLoaded ");
+		} else {
+			acpi_os_printf(" Loaded ");
+		}
+
+		switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
+		case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
+
+			acpi_os_printf("External/virtual ");
+			break;
+
+		case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
+
+			acpi_os_printf("Internal/physical ");
+			break;
+
+		case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
+
+			acpi_os_printf("Internal/virtual ");
+			break;
+
+		default:
+
+			acpi_os_printf("INVALID TYPE    ");
+			break;
+		}
+
+		/* Make sure that the table is mapped */
+
+		status = acpi_tb_validate_table(table_desc);
+		if (ACPI_FAILURE(status)) {
+			return;
+		}
+
+		/* Dump the table header */
+
+		if (table_desc->pointer) {
+			acpi_tb_print_table_header(table_desc->address,
+						   table_desc->pointer);
+		} else {
+			/* If the pointer is null, the table has been unloaded */
+
+			ACPI_INFO((AE_INFO, "%4.4s - Table has been unloaded",
+				   table_desc->signature.ascii));
+		}
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_unload_acpi_table
+ *
+ * PARAMETERS:  object_name         - Namespace pathname for an object that
+ *                                    is owned by the table to be unloaded
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Unload an ACPI table, via any namespace node that is owned
+ *              by the table.
+ *
+ ******************************************************************************/
+
+void acpi_db_unload_acpi_table(char *object_name)
+{
+	struct acpi_namespace_node *node;
+	acpi_status status;
+
+	/* Translate name to an Named object */
+
+	node = acpi_db_convert_to_node(object_name);
+	if (!node) {
+		return;
+	}
+
+	status = acpi_unload_parent_table(ACPI_CAST_PTR(acpi_handle, node));
+	if (ACPI_SUCCESS(status)) {
+		acpi_os_printf("Parent of [%s] (%p) unloaded and uninstalled\n",
+			       object_name, node);
+	} else {
+		acpi_os_printf("%s, while unloading parent table of [%s]\n",
+			       acpi_format_exception(status), object_name);
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_send_notify
+ *
+ * PARAMETERS:  name                - Name of ACPI object where to send notify
+ *              value               - Value of the notify to send.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Send an ACPI notification. The value specified is sent to the
+ *              named object as an ACPI notify.
+ *
+ ******************************************************************************/
+
+void acpi_db_send_notify(char *name, u32 value)
+{
+	struct acpi_namespace_node *node;
+	acpi_status status;
+
+	/* Translate name to an Named object */
+
+	node = acpi_db_convert_to_node(name);
+	if (!node) {
+		return;
+	}
+
+	/* Dispatch the notify if legal */
+
+	if (acpi_ev_is_notify_object(node)) {
+		status = acpi_ev_queue_notify_request(node, value);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("Could not queue notify\n");
+		}
+	} else {
+		acpi_os_printf("Named object [%4.4s] Type %s, "
+			       "must be Device/Thermal/Processor type\n",
+			       acpi_ut_get_node_name(node),
+			       acpi_ut_get_type_name(node->type));
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_interfaces
+ *
+ * PARAMETERS:  action_arg          - Null, "install", or "remove"
+ *              interface_name_arg  - Name for install/remove options
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display or modify the global _OSI interface list
+ *
+ ******************************************************************************/
+
+void acpi_db_display_interfaces(char *action_arg, char *interface_name_arg)
+{
+	struct acpi_interface_info *next_interface;
+	char *sub_string;
+	acpi_status status;
+
+	/* If no arguments, just display current interface list */
+
+	if (!action_arg) {
+		(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex,
+					    ACPI_WAIT_FOREVER);
+
+		next_interface = acpi_gbl_supported_interfaces;
+		while (next_interface) {
+			if (!(next_interface->flags & ACPI_OSI_INVALID)) {
+				acpi_os_printf("%s\n", next_interface->name);
+			}
+
+			next_interface = next_interface->next;
+		}
+
+		acpi_os_release_mutex(acpi_gbl_osi_mutex);
+		return;
+	}
+
+	/* If action_arg exists, so must interface_name_arg */
+
+	if (!interface_name_arg) {
+		acpi_os_printf("Missing Interface Name argument\n");
+		return;
+	}
+
+	/* Uppercase the action for match below */
+
+	acpi_ut_strupr(action_arg);
+
+	/* install - install an interface */
+
+	sub_string = strstr("INSTALL", action_arg);
+	if (sub_string) {
+		status = acpi_install_interface(interface_name_arg);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("%s, while installing \"%s\"\n",
+				       acpi_format_exception(status),
+				       interface_name_arg);
+		}
+		return;
+	}
+
+	/* remove - remove an interface */
+
+	sub_string = strstr("REMOVE", action_arg);
+	if (sub_string) {
+		status = acpi_remove_interface(interface_name_arg);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("%s, while removing \"%s\"\n",
+				       acpi_format_exception(status),
+				       interface_name_arg);
+		}
+		return;
+	}
+
+	/* Invalid action_arg */
+
+	acpi_os_printf("Invalid action argument: %s\n", action_arg);
+	return;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_template
+ *
+ * PARAMETERS:  buffer_arg          - Buffer name or address
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Dump a buffer that contains a resource template
+ *
+ ******************************************************************************/
+
+void acpi_db_display_template(char *buffer_arg)
+{
+	struct acpi_namespace_node *node;
+	acpi_status status;
+	struct acpi_buffer return_buffer;
+
+	/* Translate buffer_arg to an Named object */
+
+	node = acpi_db_convert_to_node(buffer_arg);
+	if (!node || (node == acpi_gbl_root_node)) {
+		acpi_os_printf("Invalid argument: %s\n", buffer_arg);
+		return;
+	}
+
+	/* We must have a buffer object */
+
+	if (node->type != ACPI_TYPE_BUFFER) {
+		acpi_os_printf
+		    ("Not a Buffer object, cannot be a template: %s\n",
+		     buffer_arg);
+		return;
+	}
+
+	return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
+	return_buffer.pointer = acpi_gbl_db_buffer;
+
+	/* Attempt to convert the raw buffer to a resource list */
+
+	status = acpi_rs_create_resource_list(node->object, &return_buffer);
+
+	acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
+	acpi_dbg_level |= ACPI_LV_RESOURCES;
+
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf
+		    ("Could not convert Buffer to a resource list: %s, %s\n",
+		     buffer_arg, acpi_format_exception(status));
+		goto dump_buffer;
+	}
+
+	/* Now we can dump the resource list */
+
+	acpi_rs_dump_resource_list(ACPI_CAST_PTR(struct acpi_resource,
+						 return_buffer.pointer));
+
+dump_buffer:
+	acpi_os_printf("\nRaw data buffer:\n");
+	acpi_ut_debug_dump_buffer((u8 *)node->object->buffer.pointer,
+				  node->object->buffer.length,
+				  DB_BYTE_DISPLAY, ACPI_UINT32_MAX);
+
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+	return;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_dm_compare_aml_resources
+ *
+ * PARAMETERS:  aml1_buffer         - Contains first resource list
+ *              aml1_buffer_length  - Length of first resource list
+ *              aml2_buffer         - Contains second resource list
+ *              aml2_buffer_length  - Length of second resource list
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Compare two AML resource lists, descriptor by descriptor (in
+ *              order to isolate a miscompare to an individual resource)
+ *
+ ******************************************************************************/
+
+static void
+acpi_dm_compare_aml_resources(u8 *aml1_buffer,
+			      acpi_rsdesc_size aml1_buffer_length,
+			      u8 *aml2_buffer,
+			      acpi_rsdesc_size aml2_buffer_length)
+{
+	u8 *aml1;
+	u8 *aml2;
+	u8 *aml1_end;
+	u8 *aml2_end;
+	acpi_rsdesc_size aml1_length;
+	acpi_rsdesc_size aml2_length;
+	acpi_rsdesc_size offset = 0;
+	u8 resource_type;
+	u32 count = 0;
+	u32 i;
+
+	/* Compare overall buffer sizes (may be different due to size rounding) */
+
+	if (aml1_buffer_length != aml2_buffer_length) {
+		acpi_os_printf("**** Buffer length mismatch in converted "
+			       "AML: Original %X, New %X ****\n",
+			       aml1_buffer_length, aml2_buffer_length);
+	}
+
+	aml1 = aml1_buffer;
+	aml2 = aml2_buffer;
+	aml1_end = aml1_buffer + aml1_buffer_length;
+	aml2_end = aml2_buffer + aml2_buffer_length;
+
+	/* Walk the descriptor lists, comparing each descriptor */
+
+	while ((aml1 < aml1_end) && (aml2 < aml2_end)) {
+
+		/* Get the lengths of each descriptor */
+
+		aml1_length = acpi_ut_get_descriptor_length(aml1);
+		aml2_length = acpi_ut_get_descriptor_length(aml2);
+		resource_type = acpi_ut_get_resource_type(aml1);
+
+		/* Check for descriptor length match */
+
+		if (aml1_length != aml2_length) {
+			acpi_os_printf
+			    ("**** Length mismatch in descriptor [%.2X] type %2.2X, "
+			     "Offset %8.8X Len1 %X, Len2 %X ****\n", count,
+			     resource_type, offset, aml1_length, aml2_length);
+		}
+
+		/* Check for descriptor byte match */
+
+		else if (memcmp(aml1, aml2, aml1_length)) {
+			acpi_os_printf
+			    ("**** Data mismatch in descriptor [%.2X] type %2.2X, "
+			     "Offset %8.8X ****\n", count, resource_type,
+			     offset);
+
+			for (i = 0; i < aml1_length; i++) {
+				if (aml1[i] != aml2[i]) {
+					acpi_os_printf
+					    ("Mismatch at byte offset %.2X: is %2.2X, "
+					     "should be %2.2X\n", i, aml2[i],
+					     aml1[i]);
+				}
+			}
+		}
+
+		/* Exit on end_tag descriptor */
+
+		if (resource_type == ACPI_RESOURCE_NAME_END_TAG) {
+			return;
+		}
+
+		/* Point to next descriptor in each buffer */
+
+		count++;
+		offset += aml1_length;
+		aml1 += aml1_length;
+		aml2 += aml2_length;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_dm_test_resource_conversion
+ *
+ * PARAMETERS:  node                - Parent device node
+ *              name                - resource method name (_CRS)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Compare the original AML with a conversion of the AML to
+ *              internal resource list, then back to AML.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_dm_test_resource_conversion(struct acpi_namespace_node *node, char *name)
+{
+	acpi_status status;
+	struct acpi_buffer return_buffer;
+	struct acpi_buffer resource_buffer;
+	struct acpi_buffer new_aml;
+	union acpi_object *original_aml;
+
+	acpi_os_printf("Resource Conversion Comparison:\n");
+
+	new_aml.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	return_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	resource_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+
+	/* Get the original _CRS AML resource template */
+
+	status = acpi_evaluate_object(node, name, NULL, &return_buffer);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not obtain %s: %s\n",
+			       name, acpi_format_exception(status));
+		return (status);
+	}
+
+	/* Get the AML resource template, converted to internal resource structs */
+
+	status = acpi_get_current_resources(node, &resource_buffer);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("AcpiGetCurrentResources failed: %s\n",
+			       acpi_format_exception(status));
+		goto exit1;
+	}
+
+	/* Convert internal resource list to external AML resource template */
+
+	status = acpi_rs_create_aml_resources(&resource_buffer, &new_aml);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("AcpiRsCreateAmlResources failed: %s\n",
+			       acpi_format_exception(status));
+		goto exit2;
+	}
+
+	/* Compare original AML to the newly created AML resource list */
+
+	original_aml = return_buffer.pointer;
+
+	acpi_dm_compare_aml_resources(original_aml->buffer.pointer,
+				      (acpi_rsdesc_size) original_aml->buffer.
+				      length, new_aml.pointer,
+				      (acpi_rsdesc_size) new_aml.length);
+
+	/* Cleanup and exit */
+
+	ACPI_FREE(new_aml.pointer);
+exit2:
+	ACPI_FREE(resource_buffer.pointer);
+exit1:
+	ACPI_FREE(return_buffer.pointer);
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_resource_callback
+ *
+ * PARAMETERS:  acpi_walk_resource_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Simple callback to exercise acpi_walk_resources and
+ *              acpi_walk_resource_buffer.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_resource_callback(struct acpi_resource *resource, void *context)
+{
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_device_resources
+ *
+ * PARAMETERS:  acpi_walk_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Display the _PRT/_CRS/_PRS resources for a device object.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_device_resources(acpi_handle obj_handle,
+			 u32 nesting_level, void *context, void **return_value)
+{
+	struct acpi_namespace_node *node;
+	struct acpi_namespace_node *prt_node = NULL;
+	struct acpi_namespace_node *crs_node = NULL;
+	struct acpi_namespace_node *prs_node = NULL;
+	struct acpi_namespace_node *aei_node = NULL;
+	char *parent_path;
+	struct acpi_buffer return_buffer;
+	acpi_status status;
+
+	node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
+	parent_path = acpi_ns_get_external_pathname(node);
+	if (!parent_path) {
+		return (AE_NO_MEMORY);
+	}
+
+	/* Get handles to the resource methods for this device */
+
+	(void)acpi_get_handle(node, METHOD_NAME__PRT,
+			      ACPI_CAST_PTR(acpi_handle, &prt_node));
+	(void)acpi_get_handle(node, METHOD_NAME__CRS,
+			      ACPI_CAST_PTR(acpi_handle, &crs_node));
+	(void)acpi_get_handle(node, METHOD_NAME__PRS,
+			      ACPI_CAST_PTR(acpi_handle, &prs_node));
+	(void)acpi_get_handle(node, METHOD_NAME__AEI,
+			      ACPI_CAST_PTR(acpi_handle, &aei_node));
+
+	if (!prt_node && !crs_node && !prs_node && !aei_node) {
+		goto cleanup;	/* Nothing to do */
+	}
+
+	acpi_os_printf("\nDevice: %s\n", parent_path);
+
+	/* Prepare for a return object of arbitrary size */
+
+	return_buffer.pointer = acpi_gbl_db_buffer;
+	return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
+
+	/* _PRT */
+
+	if (prt_node) {
+		acpi_os_printf("Evaluating _PRT\n");
+
+		status =
+		    acpi_evaluate_object(prt_node, NULL, NULL, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("Could not evaluate _PRT: %s\n",
+				       acpi_format_exception(status));
+			goto get_crs;
+		}
+
+		return_buffer.pointer = acpi_gbl_db_buffer;
+		return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
+
+		status = acpi_get_irq_routing_table(node, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("GetIrqRoutingTable failed: %s\n",
+				       acpi_format_exception(status));
+			goto get_crs;
+		}
+
+		acpi_rs_dump_irq_list(ACPI_CAST_PTR(u8, acpi_gbl_db_buffer));
+	}
+
+	/* _CRS */
+
+get_crs:
+	if (crs_node) {
+		acpi_os_printf("Evaluating _CRS\n");
+
+		return_buffer.pointer = acpi_gbl_db_buffer;
+		return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
+
+		status =
+		    acpi_evaluate_object(crs_node, NULL, NULL, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("Could not evaluate _CRS: %s\n",
+				       acpi_format_exception(status));
+			goto get_prs;
+		}
+
+		/* This code exercises the acpi_walk_resources interface */
+
+		status = acpi_walk_resources(node, METHOD_NAME__CRS,
+					     acpi_db_resource_callback, NULL);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("AcpiWalkResources failed: %s\n",
+				       acpi_format_exception(status));
+			goto get_prs;
+		}
+
+		/* Get the _CRS resource list (test ALLOCATE buffer) */
+
+		return_buffer.pointer = NULL;
+		return_buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+
+		status = acpi_get_current_resources(node, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("AcpiGetCurrentResources failed: %s\n",
+				       acpi_format_exception(status));
+			goto get_prs;
+		}
+
+		/* This code exercises the acpi_walk_resource_buffer interface */
+
+		status = acpi_walk_resource_buffer(&return_buffer,
+						   acpi_db_resource_callback,
+						   NULL);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("AcpiWalkResourceBuffer failed: %s\n",
+				       acpi_format_exception(status));
+			goto end_crs;
+		}
+
+		/* Dump the _CRS resource list */
+
+		acpi_rs_dump_resource_list(ACPI_CAST_PTR(struct acpi_resource,
+							 return_buffer.
+							 pointer));
+
+		/*
+		 * Perform comparison of original AML to newly created AML. This
+		 * tests both the AML->Resource conversion and the Resource->AML
+		 * conversion.
+		 */
+		(void)acpi_dm_test_resource_conversion(node, METHOD_NAME__CRS);
+
+		/* Execute _SRS with the resource list */
+
+		acpi_os_printf("Evaluating _SRS\n");
+
+		status = acpi_set_current_resources(node, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("AcpiSetCurrentResources failed: %s\n",
+				       acpi_format_exception(status));
+			goto end_crs;
+		}
+
+end_crs:
+		ACPI_FREE(return_buffer.pointer);
+	}
+
+	/* _PRS */
+
+get_prs:
+	if (prs_node) {
+		acpi_os_printf("Evaluating _PRS\n");
+
+		return_buffer.pointer = acpi_gbl_db_buffer;
+		return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
+
+		status =
+		    acpi_evaluate_object(prs_node, NULL, NULL, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("Could not evaluate _PRS: %s\n",
+				       acpi_format_exception(status));
+			goto get_aei;
+		}
+
+		return_buffer.pointer = acpi_gbl_db_buffer;
+		return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
+
+		status = acpi_get_possible_resources(node, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("AcpiGetPossibleResources failed: %s\n",
+				       acpi_format_exception(status));
+			goto get_aei;
+		}
+
+		acpi_rs_dump_resource_list(ACPI_CAST_PTR
+					   (struct acpi_resource,
+					    acpi_gbl_db_buffer));
+	}
+
+	/* _AEI */
+
+get_aei:
+	if (aei_node) {
+		acpi_os_printf("Evaluating _AEI\n");
+
+		return_buffer.pointer = acpi_gbl_db_buffer;
+		return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
+
+		status =
+		    acpi_evaluate_object(aei_node, NULL, NULL, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("Could not evaluate _AEI: %s\n",
+				       acpi_format_exception(status));
+			goto cleanup;
+		}
+
+		return_buffer.pointer = acpi_gbl_db_buffer;
+		return_buffer.length = ACPI_DEBUG_BUFFER_SIZE;
+
+		status = acpi_get_event_resources(node, &return_buffer);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("AcpiGetEventResources failed: %s\n",
+				       acpi_format_exception(status));
+			goto cleanup;
+		}
+
+		acpi_rs_dump_resource_list(ACPI_CAST_PTR
+					   (struct acpi_resource,
+					    acpi_gbl_db_buffer));
+	}
+
+cleanup:
+	ACPI_FREE(parent_path);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_resources
+ *
+ * PARAMETERS:  object_arg          - String object name or object pointer.
+ *                                    NULL or "*" means "display resources for
+ *                                    all devices"
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display the resource objects associated with a device.
+ *
+ ******************************************************************************/
+
+void acpi_db_display_resources(char *object_arg)
+{
+	struct acpi_namespace_node *node;
+
+	acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
+	acpi_dbg_level |= ACPI_LV_RESOURCES;
+
+	/* Asterisk means "display resources for all devices" */
+
+	if (!object_arg || (!strcmp(object_arg, "*"))) {
+		(void)acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+					  ACPI_UINT32_MAX,
+					  acpi_db_device_resources, NULL, NULL,
+					  NULL);
+	} else {
+		/* Convert string to object pointer */
+
+		node = acpi_db_convert_to_node(object_arg);
+		if (node) {
+			if (node->type != ACPI_TYPE_DEVICE) {
+				acpi_os_printf
+				    ("%4.4s: Name is not a device object (%s)\n",
+				     node->name.ascii,
+				     acpi_ut_get_type_name(node->type));
+			} else {
+				(void)acpi_db_device_resources(node, 0, NULL,
+							       NULL);
+			}
+		}
+	}
+
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+}
+
+#if (!ACPI_REDUCED_HARDWARE)
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_generate_gpe
+ *
+ * PARAMETERS:  gpe_arg             - Raw GPE number, ascii string
+ *              block_arg           - GPE block number, ascii string
+ *                                    0 or 1 for FADT GPE blocks
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Simulate firing of a GPE
+ *
+ ******************************************************************************/
+
+void acpi_db_generate_gpe(char *gpe_arg, char *block_arg)
+{
+	u32 block_number = 0;
+	u32 gpe_number;
+	struct acpi_gpe_event_info *gpe_event_info;
+
+	gpe_number = strtoul(gpe_arg, NULL, 0);
+
+	/*
+	 * If no block arg, or block arg == 0 or 1, use the FADT-defined
+	 * GPE blocks.
+	 */
+	if (block_arg) {
+		block_number = strtoul(block_arg, NULL, 0);
+		if (block_number == 1) {
+			block_number = 0;
+		}
+	}
+
+	gpe_event_info =
+	    acpi_ev_get_gpe_event_info(ACPI_TO_POINTER(block_number),
+				       gpe_number);
+	if (!gpe_event_info) {
+		acpi_os_printf("Invalid GPE\n");
+		return;
+	}
+
+	(void)acpi_ev_gpe_dispatch(NULL, gpe_event_info, gpe_number);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_generate_sci
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Simulate an SCI -- just call the SCI dispatch.
+ *
+ ******************************************************************************/
+
+void acpi_db_generate_sci(void)
+{
+	acpi_ev_sci_dispatch();
+}
+
+#endif				/* !ACPI_REDUCED_HARDWARE */
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_trace
+ *
+ * PARAMETERS:  enable_arg          - ENABLE/AML to enable tracer
+ *                                    DISABLE to disable tracer
+ *              method_arg          - Method to trace
+ *              once_arg            - Whether trace once
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Control method tracing facility
+ *
+ ******************************************************************************/
+
+void acpi_db_trace(char *enable_arg, char *method_arg, char *once_arg)
+{
+	u32 debug_level = 0;
+	u32 debug_layer = 0;
+	u32 flags = 0;
+
+	if (enable_arg) {
+		acpi_ut_strupr(enable_arg);
+	}
+
+	if (once_arg) {
+		acpi_ut_strupr(once_arg);
+	}
+
+	if (method_arg) {
+		if (acpi_db_trace_method_name) {
+			ACPI_FREE(acpi_db_trace_method_name);
+			acpi_db_trace_method_name = NULL;
+		}
+
+		acpi_db_trace_method_name =
+		    ACPI_ALLOCATE(strlen(method_arg) + 1);
+		if (!acpi_db_trace_method_name) {
+			acpi_os_printf("Failed to allocate method name (%s)\n",
+				       method_arg);
+			return;
+		}
+
+		strcpy(acpi_db_trace_method_name, method_arg);
+	}
+
+	if (!strcmp(enable_arg, "ENABLE") ||
+	    !strcmp(enable_arg, "METHOD") || !strcmp(enable_arg, "OPCODE")) {
+		if (!strcmp(enable_arg, "ENABLE")) {
+
+			/* Inherit current console settings */
+
+			debug_level = acpi_gbl_db_console_debug_level;
+			debug_layer = acpi_dbg_layer;
+		} else {
+			/* Restrict console output to trace points only */
+
+			debug_level = ACPI_LV_TRACE_POINT;
+			debug_layer = ACPI_EXECUTER;
+		}
+
+		flags = ACPI_TRACE_ENABLED;
+
+		if (!strcmp(enable_arg, "OPCODE")) {
+			flags |= ACPI_TRACE_OPCODE;
+		}
+
+		if (once_arg && !strcmp(once_arg, "ONCE")) {
+			flags |= ACPI_TRACE_ONESHOT;
+		}
+	}
+
+	(void)acpi_debug_trace(acpi_db_trace_method_name,
+			       debug_level, debug_layer, flags);
+}
diff --git a/drivers/acpi/acpica/dbconvert.c b/drivers/acpi/acpica/dbconvert.c
new file mode 100644
index 000000000000..a71632ca8a81
--- /dev/null
+++ b/drivers/acpi/acpica/dbconvert.c
@@ -0,0 +1,484 @@
+/*******************************************************************************
+ *
+ * Module Name: dbconvert - debugger miscellaneous conversion routines
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdebug.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbconvert")
+
+#define DB_DEFAULT_PKG_ELEMENTS     33
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_hex_char_to_value
+ *
+ * PARAMETERS:  hex_char            - Ascii Hex digit, 0-9|a-f|A-F
+ *              return_value        - Where the converted value is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert a single hex character to a 4-bit number (0-16).
+ *
+ ******************************************************************************/
+acpi_status acpi_db_hex_char_to_value(int hex_char, u8 *return_value)
+{
+	u8 value;
+
+	/* Digit must be ascii [0-9a-fA-F] */
+
+	if (!isxdigit(hex_char)) {
+		return (AE_BAD_HEX_CONSTANT);
+	}
+
+	if (hex_char <= 0x39) {
+		value = (u8)(hex_char - 0x30);
+	} else {
+		value = (u8)(toupper(hex_char) - 0x37);
+	}
+
+	*return_value = value;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_hex_byte_to_binary
+ *
+ * PARAMETERS:  hex_byte            - Double hex digit (0x00 - 0xFF) in format:
+ *                                    hi_byte then lo_byte.
+ *              return_value        - Where the converted value is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert two hex characters to an 8 bit number (0 - 255).
+ *
+ ******************************************************************************/
+
+static acpi_status acpi_db_hex_byte_to_binary(char *hex_byte, u8 *return_value)
+{
+	u8 local0;
+	u8 local1;
+	acpi_status status;
+
+	/* High byte */
+
+	status = acpi_db_hex_char_to_value(hex_byte[0], &local0);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	/* Low byte */
+
+	status = acpi_db_hex_char_to_value(hex_byte[1], &local1);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	*return_value = (u8)((local0 << 4) | local1);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_convert_to_buffer
+ *
+ * PARAMETERS:  string              - Input string to be converted
+ *              object              - Where the buffer object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert a string to a buffer object. String is treated a list
+ *              of buffer elements, each separated by a space or comma.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_convert_to_buffer(char *string, union acpi_object *object)
+{
+	u32 i;
+	u32 j;
+	u32 length;
+	u8 *buffer;
+	acpi_status status;
+
+	/* Generate the final buffer length */
+
+	for (i = 0, length = 0; string[i];) {
+		i += 2;
+		length++;
+
+		while (string[i] && ((string[i] == ',') || (string[i] == ' '))) {
+			i++;
+		}
+	}
+
+	buffer = ACPI_ALLOCATE(length);
+	if (!buffer) {
+		return (AE_NO_MEMORY);
+	}
+
+	/* Convert the command line bytes to the buffer */
+
+	for (i = 0, j = 0; string[i];) {
+		status = acpi_db_hex_byte_to_binary(&string[i], &buffer[j]);
+		if (ACPI_FAILURE(status)) {
+			ACPI_FREE(buffer);
+			return (status);
+		}
+
+		j++;
+		i += 2;
+		while (string[i] && ((string[i] == ',') || (string[i] == ' '))) {
+			i++;
+		}
+	}
+
+	object->type = ACPI_TYPE_BUFFER;
+	object->buffer.pointer = buffer;
+	object->buffer.length = length;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_convert_to_package
+ *
+ * PARAMETERS:  string              - Input string to be converted
+ *              object              - Where the package object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert a string to a package object. Handles nested packages
+ *              via recursion with acpi_db_convert_to_object.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_convert_to_package(char *string, union acpi_object * object)
+{
+	char *this;
+	char *next;
+	u32 i;
+	acpi_object_type type;
+	union acpi_object *elements;
+	acpi_status status;
+
+	elements =
+	    ACPI_ALLOCATE_ZEROED(DB_DEFAULT_PKG_ELEMENTS *
+				 sizeof(union acpi_object));
+
+	this = string;
+	for (i = 0; i < (DB_DEFAULT_PKG_ELEMENTS - 1); i++) {
+		this = acpi_db_get_next_token(this, &next, &type);
+		if (!this) {
+			break;
+		}
+
+		/* Recursive call to convert each package element */
+
+		status = acpi_db_convert_to_object(type, this, &elements[i]);
+		if (ACPI_FAILURE(status)) {
+			acpi_db_delete_objects(i + 1, elements);
+			ACPI_FREE(elements);
+			return (status);
+		}
+
+		this = next;
+	}
+
+	object->type = ACPI_TYPE_PACKAGE;
+	object->package.count = i;
+	object->package.elements = elements;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_convert_to_object
+ *
+ * PARAMETERS:  type                - Object type as determined by parser
+ *              string              - Input string to be converted
+ *              object              - Where the new object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert a typed and tokenized string to an union acpi_object. Typing:
+ *              1) String objects were surrounded by quotes.
+ *              2) Buffer objects were surrounded by parentheses.
+ *              3) Package objects were surrounded by brackets "[]".
+ *              4) All standalone tokens are treated as integers.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_db_convert_to_object(acpi_object_type type,
+			  char *string, union acpi_object * object)
+{
+	acpi_status status = AE_OK;
+
+	switch (type) {
+	case ACPI_TYPE_STRING:
+
+		object->type = ACPI_TYPE_STRING;
+		object->string.pointer = string;
+		object->string.length = (u32)strlen(string);
+		break;
+
+	case ACPI_TYPE_BUFFER:
+
+		status = acpi_db_convert_to_buffer(string, object);
+		break;
+
+	case ACPI_TYPE_PACKAGE:
+
+		status = acpi_db_convert_to_package(string, object);
+		break;
+
+	default:
+
+		object->type = ACPI_TYPE_INTEGER;
+		status = acpi_ut_strtoul64(string, 16, &object->integer.value);
+		break;
+	}
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_encode_pld_buffer
+ *
+ * PARAMETERS:  pld_info            - _PLD buffer struct (Using local struct)
+ *
+ * RETURN:      Encode _PLD buffer suitable for return value from _PLD
+ *
+ * DESCRIPTION: Bit-packs a _PLD buffer struct. Used to test the _PLD macros
+ *
+ ******************************************************************************/
+
+u8 *acpi_db_encode_pld_buffer(struct acpi_pld_info *pld_info)
+{
+	u32 *buffer;
+	u32 dword;
+
+	buffer = ACPI_ALLOCATE_ZEROED(ACPI_PLD_BUFFER_SIZE);
+	if (!buffer) {
+		return (NULL);
+	}
+
+	/* First 32 bits */
+
+	dword = 0;
+	ACPI_PLD_SET_REVISION(&dword, pld_info->revision);
+	ACPI_PLD_SET_IGNORE_COLOR(&dword, pld_info->ignore_color);
+	ACPI_PLD_SET_RED(&dword, pld_info->red);
+	ACPI_PLD_SET_GREEN(&dword, pld_info->green);
+	ACPI_PLD_SET_BLUE(&dword, pld_info->blue);
+	ACPI_MOVE_32_TO_32(&buffer[0], &dword);
+
+	/* Second 32 bits */
+
+	dword = 0;
+	ACPI_PLD_SET_WIDTH(&dword, pld_info->width);
+	ACPI_PLD_SET_HEIGHT(&dword, pld_info->height);
+	ACPI_MOVE_32_TO_32(&buffer[1], &dword);
+
+	/* Third 32 bits */
+
+	dword = 0;
+	ACPI_PLD_SET_USER_VISIBLE(&dword, pld_info->user_visible);
+	ACPI_PLD_SET_DOCK(&dword, pld_info->dock);
+	ACPI_PLD_SET_LID(&dword, pld_info->lid);
+	ACPI_PLD_SET_PANEL(&dword, pld_info->panel);
+	ACPI_PLD_SET_VERTICAL(&dword, pld_info->vertical_position);
+	ACPI_PLD_SET_HORIZONTAL(&dword, pld_info->horizontal_position);
+	ACPI_PLD_SET_SHAPE(&dword, pld_info->shape);
+	ACPI_PLD_SET_ORIENTATION(&dword, pld_info->group_orientation);
+	ACPI_PLD_SET_TOKEN(&dword, pld_info->group_token);
+	ACPI_PLD_SET_POSITION(&dword, pld_info->group_position);
+	ACPI_PLD_SET_BAY(&dword, pld_info->bay);
+	ACPI_MOVE_32_TO_32(&buffer[2], &dword);
+
+	/* Fourth 32 bits */
+
+	dword = 0;
+	ACPI_PLD_SET_EJECTABLE(&dword, pld_info->ejectable);
+	ACPI_PLD_SET_OSPM_EJECT(&dword, pld_info->ospm_eject_required);
+	ACPI_PLD_SET_CABINET(&dword, pld_info->cabinet_number);
+	ACPI_PLD_SET_CARD_CAGE(&dword, pld_info->card_cage_number);
+	ACPI_PLD_SET_REFERENCE(&dword, pld_info->reference);
+	ACPI_PLD_SET_ROTATION(&dword, pld_info->rotation);
+	ACPI_PLD_SET_ORDER(&dword, pld_info->order);
+	ACPI_MOVE_32_TO_32(&buffer[3], &dword);
+
+	if (pld_info->revision >= 2) {
+
+		/* Fifth 32 bits */
+
+		dword = 0;
+		ACPI_PLD_SET_VERT_OFFSET(&dword, pld_info->vertical_offset);
+		ACPI_PLD_SET_HORIZ_OFFSET(&dword, pld_info->horizontal_offset);
+		ACPI_MOVE_32_TO_32(&buffer[4], &dword);
+	}
+
+	return (ACPI_CAST_PTR(u8, buffer));
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_dump_pld_buffer
+ *
+ * PARAMETERS:  obj_desc            - Object returned from _PLD method
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Dumps formatted contents of a _PLD return buffer.
+ *
+ ******************************************************************************/
+
+#define ACPI_PLD_OUTPUT     "%20s : %-6X\n"
+
+void acpi_db_dump_pld_buffer(union acpi_object *obj_desc)
+{
+	union acpi_object *buffer_desc;
+	struct acpi_pld_info *pld_info;
+	u8 *new_buffer;
+	acpi_status status;
+
+	/* Object must be of type Package with at least one Buffer element */
+
+	if (obj_desc->type != ACPI_TYPE_PACKAGE) {
+		return;
+	}
+
+	buffer_desc = &obj_desc->package.elements[0];
+	if (buffer_desc->type != ACPI_TYPE_BUFFER) {
+		return;
+	}
+
+	/* Convert _PLD buffer to local _PLD struct */
+
+	status = acpi_decode_pld_buffer(buffer_desc->buffer.pointer,
+					buffer_desc->buffer.length, &pld_info);
+	if (ACPI_FAILURE(status)) {
+		return;
+	}
+
+	/* Encode local _PLD struct back to a _PLD buffer */
+
+	new_buffer = acpi_db_encode_pld_buffer(pld_info);
+	if (!new_buffer) {
+		return;
+	}
+
+	/* The two bit-packed buffers should match */
+
+	if (memcmp(new_buffer, buffer_desc->buffer.pointer,
+		   buffer_desc->buffer.length)) {
+		acpi_os_printf
+		    ("Converted _PLD buffer does not compare. New:\n");
+
+		acpi_ut_dump_buffer(new_buffer,
+				    buffer_desc->buffer.length, DB_BYTE_DISPLAY,
+				    0);
+	}
+
+	/* First 32-bit dword */
+
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Revision", pld_info->revision);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_IgnoreColor",
+		       pld_info->ignore_color);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Red", pld_info->red);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Green", pld_info->green);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Blue", pld_info->blue);
+
+	/* Second 32-bit dword */
+
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Width", pld_info->width);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Height", pld_info->height);
+
+	/* Third 32-bit dword */
+
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_UserVisible",
+		       pld_info->user_visible);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Dock", pld_info->dock);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Lid", pld_info->lid);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Panel", pld_info->panel);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalPosition",
+		       pld_info->vertical_position);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalPosition",
+		       pld_info->horizontal_position);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Shape", pld_info->shape);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupOrientation",
+		       pld_info->group_orientation);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupToken",
+		       pld_info->group_token);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_GroupPosition",
+		       pld_info->group_position);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Bay", pld_info->bay);
+
+	/* Fourth 32-bit dword */
+
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Ejectable", pld_info->ejectable);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_EjectRequired",
+		       pld_info->ospm_eject_required);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CabinetNumber",
+		       pld_info->cabinet_number);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_CardCageNumber",
+		       pld_info->card_cage_number);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Reference", pld_info->reference);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Rotation", pld_info->rotation);
+	acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_Order", pld_info->order);
+
+	/* Fifth 32-bit dword */
+
+	if (buffer_desc->buffer.length > 16) {
+		acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_VerticalOffset",
+			       pld_info->vertical_offset);
+		acpi_os_printf(ACPI_PLD_OUTPUT, "PLD_HorizontalOffset",
+			       pld_info->horizontal_offset);
+	}
+
+	ACPI_FREE(pld_info);
+	ACPI_FREE(new_buffer);
+}
diff --git a/drivers/acpi/acpica/dbdisply.c b/drivers/acpi/acpica/dbdisply.c
new file mode 100644
index 000000000000..672977ec7c7d
--- /dev/null
+++ b/drivers/acpi/acpica/dbdisply.c
@@ -0,0 +1,1108 @@
+/*******************************************************************************
+ *
+ * Module Name: dbdisply - debug display commands
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#include "acparser.h"
+#include "acinterp.h"
+#include "acdebug.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbdisply")
+
+/* Local prototypes */
+static void acpi_db_dump_parser_descriptor(union acpi_parse_object *op);
+
+static void *acpi_db_get_pointer(void *target);
+
+static acpi_status
+acpi_db_display_non_root_handlers(acpi_handle obj_handle,
+				  u32 nesting_level,
+				  void *context, void **return_value);
+
+/*
+ * System handler information.
+ * Used for Handlers command, in acpi_db_display_handlers.
+ */
+#define ACPI_PREDEFINED_PREFIX          "%25s (%.2X) : "
+#define ACPI_HANDLER_NAME_STRING               "%30s : "
+#define ACPI_HANDLER_PRESENT_STRING                    "%-9s (%p)\n"
+#define ACPI_HANDLER_PRESENT_STRING2                   "%-9s (%p)"
+#define ACPI_HANDLER_NOT_PRESENT_STRING                "%-9s\n"
+
+/* All predefined Address Space IDs */
+
+static acpi_adr_space_type acpi_gbl_space_id_list[] = {
+	ACPI_ADR_SPACE_SYSTEM_MEMORY,
+	ACPI_ADR_SPACE_SYSTEM_IO,
+	ACPI_ADR_SPACE_PCI_CONFIG,
+	ACPI_ADR_SPACE_EC,
+	ACPI_ADR_SPACE_SMBUS,
+	ACPI_ADR_SPACE_CMOS,
+	ACPI_ADR_SPACE_PCI_BAR_TARGET,
+	ACPI_ADR_SPACE_IPMI,
+	ACPI_ADR_SPACE_GPIO,
+	ACPI_ADR_SPACE_GSBUS,
+	ACPI_ADR_SPACE_DATA_TABLE,
+	ACPI_ADR_SPACE_FIXED_HARDWARE
+};
+
+/* Global handler information */
+
+typedef struct acpi_handler_info {
+	void *handler;
+	char *name;
+
+} acpi_handler_info;
+
+static struct acpi_handler_info acpi_gbl_handler_list[] = {
+	{&acpi_gbl_global_notify[0].handler, "System Notifications"},
+	{&acpi_gbl_global_notify[1].handler, "Device Notifications"},
+	{&acpi_gbl_table_handler, "ACPI Table Events"},
+	{&acpi_gbl_exception_handler, "Control Method Exceptions"},
+	{&acpi_gbl_interface_handler, "OSI Invocations"}
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_get_pointer
+ *
+ * PARAMETERS:  target          - Pointer to string to be converted
+ *
+ * RETURN:      Converted pointer
+ *
+ * DESCRIPTION: Convert an ascii pointer value to a real value
+ *
+ ******************************************************************************/
+
+static void *acpi_db_get_pointer(void *target)
+{
+	void *obj_ptr;
+	acpi_size address;
+
+	address = strtoul(target, NULL, 16);
+	obj_ptr = ACPI_TO_POINTER(address);
+	return (obj_ptr);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_dump_parser_descriptor
+ *
+ * PARAMETERS:  op              - A parser Op descriptor
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display a formatted parser object
+ *
+ ******************************************************************************/
+
+static void acpi_db_dump_parser_descriptor(union acpi_parse_object *op)
+{
+	const struct acpi_opcode_info *info;
+
+	info = acpi_ps_get_opcode_info(op->common.aml_opcode);
+
+	acpi_os_printf("Parser Op Descriptor:\n");
+	acpi_os_printf("%20.20s : %4.4X\n", "Opcode", op->common.aml_opcode);
+
+	ACPI_DEBUG_ONLY_MEMBERS(acpi_os_printf("%20.20s : %s\n", "Opcode Name",
+					       info->name));
+
+	acpi_os_printf("%20.20s : %p\n", "Value/ArgList", op->common.value.arg);
+	acpi_os_printf("%20.20s : %p\n", "Parent", op->common.parent);
+	acpi_os_printf("%20.20s : %p\n", "NextOp", op->common.next);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_decode_and_display_object
+ *
+ * PARAMETERS:  target          - String with object to be displayed. Names
+ *                                and hex pointers are supported.
+ *              output_type     - Byte, Word, Dword, or Qword (B|W|D|Q)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display a formatted ACPI object
+ *
+ ******************************************************************************/
+
+void acpi_db_decode_and_display_object(char *target, char *output_type)
+{
+	void *obj_ptr;
+	struct acpi_namespace_node *node;
+	union acpi_operand_object *obj_desc;
+	u32 display = DB_BYTE_DISPLAY;
+	char buffer[80];
+	struct acpi_buffer ret_buf;
+	acpi_status status;
+	u32 size;
+
+	if (!target) {
+		return;
+	}
+
+	/* Decode the output type */
+
+	if (output_type) {
+		acpi_ut_strupr(output_type);
+		if (output_type[0] == 'W') {
+			display = DB_WORD_DISPLAY;
+		} else if (output_type[0] == 'D') {
+			display = DB_DWORD_DISPLAY;
+		} else if (output_type[0] == 'Q') {
+			display = DB_QWORD_DISPLAY;
+		}
+	}
+
+	ret_buf.length = sizeof(buffer);
+	ret_buf.pointer = buffer;
+
+	/* Differentiate between a number and a name */
+
+	if ((target[0] >= 0x30) && (target[0] <= 0x39)) {
+		obj_ptr = acpi_db_get_pointer(target);
+		if (!acpi_os_readable(obj_ptr, 16)) {
+			acpi_os_printf
+			    ("Address %p is invalid in this address space\n",
+			     obj_ptr);
+			return;
+		}
+
+		/* Decode the object type */
+
+		switch (ACPI_GET_DESCRIPTOR_TYPE(obj_ptr)) {
+		case ACPI_DESC_TYPE_NAMED:
+
+			/* This is a namespace Node */
+
+			if (!acpi_os_readable
+			    (obj_ptr, sizeof(struct acpi_namespace_node))) {
+				acpi_os_printf
+				    ("Cannot read entire Named object at address %p\n",
+				     obj_ptr);
+				return;
+			}
+
+			node = obj_ptr;
+			goto dump_node;
+
+		case ACPI_DESC_TYPE_OPERAND:
+
+			/* This is a ACPI OPERAND OBJECT */
+
+			if (!acpi_os_readable
+			    (obj_ptr, sizeof(union acpi_operand_object))) {
+				acpi_os_printf
+				    ("Cannot read entire ACPI object at address %p\n",
+				     obj_ptr);
+				return;
+			}
+
+			acpi_ut_debug_dump_buffer(obj_ptr,
+						  sizeof(union
+							 acpi_operand_object),
+						  display, ACPI_UINT32_MAX);
+			acpi_ex_dump_object_descriptor(obj_ptr, 1);
+			break;
+
+		case ACPI_DESC_TYPE_PARSER:
+
+			/* This is a Parser Op object */
+
+			if (!acpi_os_readable
+			    (obj_ptr, sizeof(union acpi_parse_object))) {
+				acpi_os_printf
+				    ("Cannot read entire Parser object at address %p\n",
+				     obj_ptr);
+				return;
+			}
+
+			acpi_ut_debug_dump_buffer(obj_ptr,
+						  sizeof(union
+							 acpi_parse_object),
+						  display, ACPI_UINT32_MAX);
+			acpi_db_dump_parser_descriptor((union acpi_parse_object
+							*)obj_ptr);
+			break;
+
+		default:
+
+			/* Is not a recognizeable object */
+
+			acpi_os_printf
+			    ("Not a known ACPI internal object, descriptor type %2.2X\n",
+			     ACPI_GET_DESCRIPTOR_TYPE(obj_ptr));
+
+			size = 16;
+			if (acpi_os_readable(obj_ptr, 64)) {
+				size = 64;
+			}
+
+			/* Just dump some memory */
+
+			acpi_ut_debug_dump_buffer(obj_ptr, size, display,
+						  ACPI_UINT32_MAX);
+			break;
+		}
+
+		return;
+	}
+
+	/* The parameter is a name string that must be resolved to a Named obj */
+
+	node = acpi_db_local_ns_lookup(target);
+	if (!node) {
+		return;
+	}
+
+dump_node:
+	/* Now dump the NS node */
+
+	status = acpi_get_name(node, ACPI_FULL_PATHNAME_NO_TRAILING, &ret_buf);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not convert name to pathname\n");
+	}
+
+	else {
+		acpi_os_printf("Object (%p) Pathname: %s\n",
+			       node, (char *)ret_buf.pointer);
+	}
+
+	if (!acpi_os_readable(node, sizeof(struct acpi_namespace_node))) {
+		acpi_os_printf("Invalid Named object at address %p\n", node);
+		return;
+	}
+
+	acpi_ut_debug_dump_buffer((void *)node,
+				  sizeof(struct acpi_namespace_node), display,
+				  ACPI_UINT32_MAX);
+	acpi_ex_dump_namespace_node(node, 1);
+
+	obj_desc = acpi_ns_get_attached_object(node);
+	if (obj_desc) {
+		acpi_os_printf("\nAttached Object (%p):\n", obj_desc);
+		if (!acpi_os_readable
+		    (obj_desc, sizeof(union acpi_operand_object))) {
+			acpi_os_printf
+			    ("Invalid internal ACPI Object at address %p\n",
+			     obj_desc);
+			return;
+		}
+
+		acpi_ut_debug_dump_buffer((void *)obj_desc,
+					  sizeof(union acpi_operand_object),
+					  display, ACPI_UINT32_MAX);
+		acpi_ex_dump_object_descriptor(obj_desc, 1);
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_method_info
+ *
+ * PARAMETERS:  start_op        - Root of the control method parse tree
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display information about the current method
+ *
+ ******************************************************************************/
+
+void acpi_db_display_method_info(union acpi_parse_object *start_op)
+{
+	struct acpi_walk_state *walk_state;
+	union acpi_operand_object *obj_desc;
+	struct acpi_namespace_node *node;
+	union acpi_parse_object *root_op;
+	union acpi_parse_object *op;
+	const struct acpi_opcode_info *op_info;
+	u32 num_ops = 0;
+	u32 num_operands = 0;
+	u32 num_operators = 0;
+	u32 num_remaining_ops = 0;
+	u32 num_remaining_operands = 0;
+	u32 num_remaining_operators = 0;
+	u8 count_remaining = FALSE;
+
+	walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
+	if (!walk_state) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	obj_desc = walk_state->method_desc;
+	node = walk_state->method_node;
+
+	acpi_os_printf("Currently executing control method is [%4.4s]\n",
+		       acpi_ut_get_node_name(node));
+	acpi_os_printf("%X Arguments, SyncLevel = %X\n",
+		       (u32)obj_desc->method.param_count,
+		       (u32)obj_desc->method.sync_level);
+
+	root_op = start_op;
+	while (root_op->common.parent) {
+		root_op = root_op->common.parent;
+	}
+
+	op = root_op;
+
+	while (op) {
+		if (op == start_op) {
+			count_remaining = TRUE;
+		}
+
+		num_ops++;
+		if (count_remaining) {
+			num_remaining_ops++;
+		}
+
+		/* Decode the opcode */
+
+		op_info = acpi_ps_get_opcode_info(op->common.aml_opcode);
+		switch (op_info->class) {
+		case AML_CLASS_ARGUMENT:
+
+			if (count_remaining) {
+				num_remaining_operands++;
+			}
+
+			num_operands++;
+			break;
+
+		case AML_CLASS_UNKNOWN:
+
+			/* Bad opcode or ASCII character */
+
+			continue;
+
+		default:
+
+			if (count_remaining) {
+				num_remaining_operators++;
+			}
+
+			num_operators++;
+			break;
+		}
+
+		op = acpi_ps_get_depth_next(start_op, op);
+	}
+
+	acpi_os_printf
+	    ("Method contains:       %X AML Opcodes - %X Operators, %X Operands\n",
+	     num_ops, num_operators, num_operands);
+
+	acpi_os_printf
+	    ("Remaining to execute:  %X AML Opcodes - %X Operators, %X Operands\n",
+	     num_remaining_ops, num_remaining_operators,
+	     num_remaining_operands);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_locals
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display all locals for the currently running control method
+ *
+ ******************************************************************************/
+
+void acpi_db_display_locals(void)
+{
+	struct acpi_walk_state *walk_state;
+
+	walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
+	if (!walk_state) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	acpi_db_decode_locals(walk_state);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_arguments
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display all arguments for the currently running control method
+ *
+ ******************************************************************************/
+
+void acpi_db_display_arguments(void)
+{
+	struct acpi_walk_state *walk_state;
+
+	walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
+	if (!walk_state) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	acpi_db_decode_arguments(walk_state);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_results
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display current contents of a method result stack
+ *
+ ******************************************************************************/
+
+void acpi_db_display_results(void)
+{
+	u32 i;
+	struct acpi_walk_state *walk_state;
+	union acpi_operand_object *obj_desc;
+	u32 result_count = 0;
+	struct acpi_namespace_node *node;
+	union acpi_generic_state *frame;
+	u32 index;		/* Index onto current frame */
+
+	walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
+	if (!walk_state) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	obj_desc = walk_state->method_desc;
+	node = walk_state->method_node;
+
+	if (walk_state->results) {
+		result_count = walk_state->result_count;
+	}
+
+	acpi_os_printf("Method [%4.4s] has %X stacked result objects\n",
+		       acpi_ut_get_node_name(node), result_count);
+
+	/* From the top element of result stack */
+
+	frame = walk_state->results;
+	index = (result_count - 1) % ACPI_RESULTS_FRAME_OBJ_NUM;
+
+	for (i = 0; i < result_count; i++) {
+		obj_desc = frame->results.obj_desc[index];
+		acpi_os_printf("Result%u: ", i);
+		acpi_db_display_internal_object(obj_desc, walk_state);
+
+		if (index == 0) {
+			frame = frame->results.next;
+			index = ACPI_RESULTS_FRAME_OBJ_NUM;
+		}
+
+		index--;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_calling_tree
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display current calling tree of nested control methods
+ *
+ ******************************************************************************/
+
+void acpi_db_display_calling_tree(void)
+{
+	struct acpi_walk_state *walk_state;
+	struct acpi_namespace_node *node;
+
+	walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
+	if (!walk_state) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	node = walk_state->method_node;
+	acpi_os_printf("Current Control Method Call Tree\n");
+
+	while (walk_state) {
+		node = walk_state->method_node;
+		acpi_os_printf("  [%4.4s]\n", acpi_ut_get_node_name(node));
+
+		walk_state = walk_state->next;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_object_type
+ *
+ * PARAMETERS:  name            - User entered NS node handle or name
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display type of an arbitrary NS node
+ *
+ ******************************************************************************/
+
+void acpi_db_display_object_type(char *name)
+{
+	struct acpi_namespace_node *node;
+	struct acpi_device_info *info;
+	acpi_status status;
+	u32 i;
+
+	node = acpi_db_convert_to_node(name);
+	if (!node) {
+		return;
+	}
+
+	status = acpi_get_object_info(ACPI_CAST_PTR(acpi_handle, node), &info);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not get object info, %s\n",
+			       acpi_format_exception(status));
+		return;
+	}
+
+	if (info->valid & ACPI_VALID_ADR) {
+		acpi_os_printf("ADR: %8.8X%8.8X, STA: %8.8X, Flags: %X\n",
+			       ACPI_FORMAT_UINT64(info->address),
+			       info->current_status, info->flags);
+	}
+	if (info->valid & ACPI_VALID_SXDS) {
+		acpi_os_printf("S1D-%2.2X S2D-%2.2X S3D-%2.2X S4D-%2.2X\n",
+			       info->highest_dstates[0],
+			       info->highest_dstates[1],
+			       info->highest_dstates[2],
+			       info->highest_dstates[3]);
+	}
+	if (info->valid & ACPI_VALID_SXWS) {
+		acpi_os_printf
+		    ("S0W-%2.2X S1W-%2.2X S2W-%2.2X S3W-%2.2X S4W-%2.2X\n",
+		     info->lowest_dstates[0], info->lowest_dstates[1],
+		     info->lowest_dstates[2], info->lowest_dstates[3],
+		     info->lowest_dstates[4]);
+	}
+
+	if (info->valid & ACPI_VALID_HID) {
+		acpi_os_printf("HID: %s\n", info->hardware_id.string);
+	}
+
+	if (info->valid & ACPI_VALID_UID) {
+		acpi_os_printf("UID: %s\n", info->unique_id.string);
+	}
+
+	if (info->valid & ACPI_VALID_SUB) {
+		acpi_os_printf("SUB: %s\n", info->subsystem_id.string);
+	}
+
+	if (info->valid & ACPI_VALID_CID) {
+		for (i = 0; i < info->compatible_id_list.count; i++) {
+			acpi_os_printf("CID %u: %s\n", i,
+				       info->compatible_id_list.ids[i].string);
+		}
+	}
+
+	ACPI_FREE(info);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_result_object
+ *
+ * PARAMETERS:  obj_desc        - Object to be displayed
+ *              walk_state      - Current walk state
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display the result of an AML opcode
+ *
+ * Note: Curently only displays the result object if we are single stepping.
+ * However, this output may be useful in other contexts and could be enabled
+ * to do so if needed.
+ *
+ ******************************************************************************/
+
+void
+acpi_db_display_result_object(union acpi_operand_object *obj_desc,
+			      struct acpi_walk_state *walk_state)
+{
+
+	/* Only display if single stepping */
+
+	if (!acpi_gbl_cm_single_step) {
+		return;
+	}
+
+	acpi_os_printf("ResultObj: ");
+	acpi_db_display_internal_object(obj_desc, walk_state);
+	acpi_os_printf("\n");
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_argument_object
+ *
+ * PARAMETERS:  obj_desc        - Object to be displayed
+ *              walk_state      - Current walk state
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display the result of an AML opcode
+ *
+ ******************************************************************************/
+
+void
+acpi_db_display_argument_object(union acpi_operand_object *obj_desc,
+				struct acpi_walk_state *walk_state)
+{
+
+	if (!acpi_gbl_cm_single_step) {
+		return;
+	}
+
+	acpi_os_printf("ArgObj:  ");
+	acpi_db_display_internal_object(obj_desc, walk_state);
+}
+
+#if (!ACPI_REDUCED_HARDWARE)
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_gpes
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display the current GPE structures
+ *
+ ******************************************************************************/
+
+void acpi_db_display_gpes(void)
+{
+	struct acpi_gpe_block_info *gpe_block;
+	struct acpi_gpe_xrupt_info *gpe_xrupt_info;
+	struct acpi_gpe_event_info *gpe_event_info;
+	struct acpi_gpe_register_info *gpe_register_info;
+	char *gpe_type;
+	struct acpi_gpe_notify_info *notify;
+	u32 gpe_index;
+	u32 block = 0;
+	u32 i;
+	u32 j;
+	u32 count;
+	char buffer[80];
+	struct acpi_buffer ret_buf;
+	acpi_status status;
+
+	ret_buf.length = sizeof(buffer);
+	ret_buf.pointer = buffer;
+
+	block = 0;
+
+	/* Walk the GPE lists */
+
+	gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
+	while (gpe_xrupt_info) {
+		gpe_block = gpe_xrupt_info->gpe_block_list_head;
+		while (gpe_block) {
+			status = acpi_get_name(gpe_block->node,
+					       ACPI_FULL_PATHNAME_NO_TRAILING,
+					       &ret_buf);
+			if (ACPI_FAILURE(status)) {
+				acpi_os_printf
+				    ("Could not convert name to pathname\n");
+			}
+
+			if (gpe_block->node == acpi_gbl_fadt_gpe_device) {
+				gpe_type = "FADT-defined GPE block";
+			} else {
+				gpe_type = "GPE Block Device";
+			}
+
+			acpi_os_printf
+			    ("\nBlock %u - Info %p  DeviceNode %p [%s] - %s\n",
+			     block, gpe_block, gpe_block->node, buffer,
+			     gpe_type);
+
+			acpi_os_printf("    Registers:    %u (%u GPEs)\n",
+				       gpe_block->register_count,
+				       gpe_block->gpe_count);
+
+			acpi_os_printf
+			    ("    GPE range:    0x%X to 0x%X on interrupt %u\n",
+			     gpe_block->block_base_number,
+			     gpe_block->block_base_number +
+			     (gpe_block->gpe_count - 1),
+			     gpe_xrupt_info->interrupt_number);
+
+			acpi_os_printf
+			    ("    RegisterInfo: %p  Status %8.8X%8.8X Enable %8.8X%8.8X\n",
+			     gpe_block->register_info,
+			     ACPI_FORMAT_UINT64(gpe_block->register_info->
+						status_address.address),
+			     ACPI_FORMAT_UINT64(gpe_block->register_info->
+						enable_address.address));
+
+			acpi_os_printf("  EventInfo:    %p\n",
+				       gpe_block->event_info);
+
+			/* Examine each GPE Register within the block */
+
+			for (i = 0; i < gpe_block->register_count; i++) {
+				gpe_register_info =
+				    &gpe_block->register_info[i];
+
+				acpi_os_printf("    Reg %u: (GPE %.2X-%.2X)  "
+					       "RunEnable %2.2X WakeEnable %2.2X"
+					       " Status %8.8X%8.8X Enable %8.8X%8.8X\n",
+					       i,
+					       gpe_register_info->
+					       base_gpe_number,
+					       gpe_register_info->
+					       base_gpe_number +
+					       (ACPI_GPE_REGISTER_WIDTH - 1),
+					       gpe_register_info->
+					       enable_for_run,
+					       gpe_register_info->
+					       enable_for_wake,
+					       ACPI_FORMAT_UINT64
+					       (gpe_register_info->
+						status_address.address),
+					       ACPI_FORMAT_UINT64
+					       (gpe_register_info->
+						enable_address.address));
+
+				/* Now look at the individual GPEs in this byte register */
+
+				for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++) {
+					gpe_index =
+					    (i * ACPI_GPE_REGISTER_WIDTH) + j;
+					gpe_event_info =
+					    &gpe_block->event_info[gpe_index];
+
+					if (ACPI_GPE_DISPATCH_TYPE
+					    (gpe_event_info->flags) ==
+					    ACPI_GPE_DISPATCH_NONE) {
+
+						/* This GPE is not used (no method or handler), ignore it */
+
+						continue;
+					}
+
+					acpi_os_printf
+					    ("        GPE %.2X: %p  RunRefs %2.2X Flags %2.2X (",
+					     gpe_block->block_base_number +
+					     gpe_index, gpe_event_info,
+					     gpe_event_info->runtime_count,
+					     gpe_event_info->flags);
+
+					/* Decode the flags byte */
+
+					if (gpe_event_info->
+					    flags & ACPI_GPE_LEVEL_TRIGGERED) {
+						acpi_os_printf("Level, ");
+					} else {
+						acpi_os_printf("Edge, ");
+					}
+
+					if (gpe_event_info->
+					    flags & ACPI_GPE_CAN_WAKE) {
+						acpi_os_printf("CanWake, ");
+					} else {
+						acpi_os_printf("RunOnly, ");
+					}
+
+					switch (ACPI_GPE_DISPATCH_TYPE
+						(gpe_event_info->flags)) {
+					case ACPI_GPE_DISPATCH_NONE:
+
+						acpi_os_printf("NotUsed");
+						break;
+
+					case ACPI_GPE_DISPATCH_METHOD:
+
+						acpi_os_printf("Method");
+						break;
+
+					case ACPI_GPE_DISPATCH_HANDLER:
+
+						acpi_os_printf("Handler");
+						break;
+
+					case ACPI_GPE_DISPATCH_NOTIFY:
+
+						count = 0;
+						notify =
+						    gpe_event_info->dispatch.
+						    notify_list;
+						while (notify) {
+							count++;
+							notify = notify->next;
+						}
+
+						acpi_os_printf
+						    ("Implicit Notify on %u devices",
+						     count);
+						break;
+
+					case ACPI_GPE_DISPATCH_RAW_HANDLER:
+
+						acpi_os_printf("RawHandler");
+						break;
+
+					default:
+
+						acpi_os_printf("UNKNOWN: %X",
+							       ACPI_GPE_DISPATCH_TYPE
+							       (gpe_event_info->
+								flags));
+						break;
+					}
+
+					acpi_os_printf(")\n");
+				}
+			}
+
+			block++;
+			gpe_block = gpe_block->next;
+		}
+
+		gpe_xrupt_info = gpe_xrupt_info->next;
+	}
+}
+#endif				/* !ACPI_REDUCED_HARDWARE */
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_handlers
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display the currently installed global handlers
+ *
+ ******************************************************************************/
+
+void acpi_db_display_handlers(void)
+{
+	union acpi_operand_object *obj_desc;
+	union acpi_operand_object *handler_obj;
+	acpi_adr_space_type space_id;
+	u32 i;
+
+	/* Operation region handlers */
+
+	acpi_os_printf("\nOperation Region Handlers at the namespace root:\n");
+
+	obj_desc = acpi_ns_get_attached_object(acpi_gbl_root_node);
+	if (obj_desc) {
+		for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_gbl_space_id_list); i++) {
+			space_id = acpi_gbl_space_id_list[i];
+			handler_obj = obj_desc->device.handler;
+
+			acpi_os_printf(ACPI_PREDEFINED_PREFIX,
+				       acpi_ut_get_region_name((u8)space_id),
+				       space_id);
+
+			while (handler_obj) {
+				if (acpi_gbl_space_id_list[i] ==
+				    handler_obj->address_space.space_id) {
+					acpi_os_printf
+					    (ACPI_HANDLER_PRESENT_STRING,
+					     (handler_obj->address_space.
+					      handler_flags &
+					      ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)
+					     ? "Default" : "User",
+					     handler_obj->address_space.
+					     handler);
+
+					goto found_handler;
+				}
+
+				handler_obj = handler_obj->address_space.next;
+			}
+
+			/* There is no handler for this space_id */
+
+			acpi_os_printf("None\n");
+
+found_handler:		;
+		}
+
+		/* Find all handlers for user-defined space_IDs */
+
+		handler_obj = obj_desc->device.handler;
+		while (handler_obj) {
+			if (handler_obj->address_space.space_id >=
+			    ACPI_USER_REGION_BEGIN) {
+				acpi_os_printf(ACPI_PREDEFINED_PREFIX,
+					       "User-defined ID",
+					       handler_obj->address_space.
+					       space_id);
+				acpi_os_printf(ACPI_HANDLER_PRESENT_STRING,
+					       (handler_obj->address_space.
+						handler_flags &
+						ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)
+					       ? "Default" : "User",
+					       handler_obj->address_space.
+					       handler);
+			}
+
+			handler_obj = handler_obj->address_space.next;
+		}
+	}
+#if (!ACPI_REDUCED_HARDWARE)
+
+	/* Fixed event handlers */
+
+	acpi_os_printf("\nFixed Event Handlers:\n");
+
+	for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
+		acpi_os_printf(ACPI_PREDEFINED_PREFIX,
+			       acpi_ut_get_event_name(i), i);
+		if (acpi_gbl_fixed_event_handlers[i].handler) {
+			acpi_os_printf(ACPI_HANDLER_PRESENT_STRING, "User",
+				       acpi_gbl_fixed_event_handlers[i].
+				       handler);
+		} else {
+			acpi_os_printf(ACPI_HANDLER_NOT_PRESENT_STRING, "None");
+		}
+	}
+
+#endif				/* !ACPI_REDUCED_HARDWARE */
+
+	/* Miscellaneous global handlers */
+
+	acpi_os_printf("\nMiscellaneous Global Handlers:\n");
+
+	for (i = 0; i < ACPI_ARRAY_LENGTH(acpi_gbl_handler_list); i++) {
+		acpi_os_printf(ACPI_HANDLER_NAME_STRING,
+			       acpi_gbl_handler_list[i].name);
+
+		if (acpi_gbl_handler_list[i].handler) {
+			acpi_os_printf(ACPI_HANDLER_PRESENT_STRING, "User",
+				       acpi_gbl_handler_list[i].handler);
+		} else {
+			acpi_os_printf(ACPI_HANDLER_NOT_PRESENT_STRING, "None");
+		}
+	}
+
+	/* Other handlers that are installed throughout the namespace */
+
+	acpi_os_printf("\nOperation Region Handlers for specific devices:\n");
+
+	(void)acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX,
+				  acpi_db_display_non_root_handlers, NULL, NULL,
+				  NULL);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_non_root_handlers
+ *
+ * PARAMETERS:  acpi_walk_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Display information about all handlers installed for a
+ *              device object.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_display_non_root_handlers(acpi_handle obj_handle,
+				  u32 nesting_level,
+				  void *context, void **return_value)
+{
+	struct acpi_namespace_node *node =
+	    ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
+	union acpi_operand_object *obj_desc;
+	union acpi_operand_object *handler_obj;
+	char *pathname;
+
+	obj_desc = acpi_ns_get_attached_object(node);
+	if (!obj_desc) {
+		return (AE_OK);
+	}
+
+	pathname = acpi_ns_get_external_pathname(node);
+	if (!pathname) {
+		return (AE_OK);
+	}
+
+	/* Display all handlers associated with this device */
+
+	handler_obj = obj_desc->device.handler;
+	while (handler_obj) {
+		acpi_os_printf(ACPI_PREDEFINED_PREFIX,
+			       acpi_ut_get_region_name((u8)handler_obj->
+						       address_space.space_id),
+			       handler_obj->address_space.space_id);
+
+		acpi_os_printf(ACPI_HANDLER_PRESENT_STRING2,
+			       (handler_obj->address_space.handler_flags &
+				ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default"
+			       : "User", handler_obj->address_space.handler);
+
+		acpi_os_printf(" Device Name: %s (%p)\n", pathname, node);
+
+		handler_obj = handler_obj->address_space.next;
+	}
+
+	ACPI_FREE(pathname);
+	return (AE_OK);
+}
diff --git a/drivers/acpi/acpica/dbexec.c b/drivers/acpi/acpica/dbexec.c
new file mode 100644
index 000000000000..d713e2df65b9
--- /dev/null
+++ b/drivers/acpi/acpica/dbexec.c
@@ -0,0 +1,764 @@
+/*******************************************************************************
+ *
+ * Module Name: dbexec - debugger control method execution
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdebug.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbexec")
+
+static struct acpi_db_method_info acpi_gbl_db_method_info;
+
+/* Local prototypes */
+
+static acpi_status
+acpi_db_execute_method(struct acpi_db_method_info *info,
+		       struct acpi_buffer *return_obj);
+
+static acpi_status acpi_db_execute_setup(struct acpi_db_method_info *info);
+
+static u32 acpi_db_get_outstanding_allocations(void);
+
+static void ACPI_SYSTEM_XFACE acpi_db_method_thread(void *context);
+
+static acpi_status
+acpi_db_execution_walk(acpi_handle obj_handle,
+		       u32 nesting_level, void *context, void **return_value);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_delete_objects
+ *
+ * PARAMETERS:  count               - Count of objects in the list
+ *              objects             - Array of ACPI_OBJECTs to be deleted
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Delete a list of ACPI_OBJECTS. Handles packages and nested
+ *              packages via recursion.
+ *
+ ******************************************************************************/
+
+void acpi_db_delete_objects(u32 count, union acpi_object *objects)
+{
+	u32 i;
+
+	for (i = 0; i < count; i++) {
+		switch (objects[i].type) {
+		case ACPI_TYPE_BUFFER:
+
+			ACPI_FREE(objects[i].buffer.pointer);
+			break;
+
+		case ACPI_TYPE_PACKAGE:
+
+			/* Recursive call to delete package elements */
+
+			acpi_db_delete_objects(objects[i].package.count,
+					       objects[i].package.elements);
+
+			/* Free the elements array */
+
+			ACPI_FREE(objects[i].package.elements);
+			break;
+
+		default:
+
+			break;
+		}
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_execute_method
+ *
+ * PARAMETERS:  info            - Valid info segment
+ *              return_obj      - Where to put return object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute a control method.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_execute_method(struct acpi_db_method_info *info,
+		       struct acpi_buffer *return_obj)
+{
+	acpi_status status;
+	struct acpi_object_list param_objects;
+	union acpi_object params[ACPI_DEBUGGER_MAX_ARGS + 1];
+	u32 i;
+
+	ACPI_FUNCTION_TRACE(db_execute_method);
+
+	if (acpi_gbl_db_output_to_file && !acpi_dbg_level) {
+		acpi_os_printf("Warning: debug output is not enabled!\n");
+	}
+
+	param_objects.count = 0;
+	param_objects.pointer = NULL;
+
+	/* Pass through any command-line arguments */
+
+	if (info->args && info->args[0]) {
+
+		/* Get arguments passed on the command line */
+
+		for (i = 0; (info->args[i] && *(info->args[i])); i++) {
+
+			/* Convert input string (token) to an actual union acpi_object */
+
+			status = acpi_db_convert_to_object(info->types[i],
+							   info->args[i],
+							   &params[i]);
+			if (ACPI_FAILURE(status)) {
+				ACPI_EXCEPTION((AE_INFO, status,
+						"While parsing method arguments"));
+				goto cleanup;
+			}
+		}
+
+		param_objects.count = i;
+		param_objects.pointer = params;
+	}
+
+	/* Prepare for a return object of arbitrary size */
+
+	return_obj->pointer = acpi_gbl_db_buffer;
+	return_obj->length = ACPI_DEBUG_BUFFER_SIZE;
+
+	/* Do the actual method execution */
+
+	acpi_gbl_method_executing = TRUE;
+	status = acpi_evaluate_object(NULL, info->pathname,
+				      &param_objects, return_obj);
+
+	acpi_gbl_cm_single_step = FALSE;
+	acpi_gbl_method_executing = FALSE;
+
+	if (ACPI_FAILURE(status)) {
+		ACPI_EXCEPTION((AE_INFO, status,
+				"while executing %s from debugger",
+				info->pathname));
+
+		if (status == AE_BUFFER_OVERFLOW) {
+			ACPI_ERROR((AE_INFO,
+				    "Possible overflow of internal debugger "
+				    "buffer (size 0x%X needed 0x%X)",
+				    ACPI_DEBUG_BUFFER_SIZE,
+				    (u32)return_obj->length));
+		}
+	}
+
+cleanup:
+	acpi_db_delete_objects(param_objects.count, params);
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_execute_setup
+ *
+ * PARAMETERS:  info            - Valid method info
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Setup info segment prior to method execution
+ *
+ ******************************************************************************/
+
+static acpi_status acpi_db_execute_setup(struct acpi_db_method_info *info)
+{
+	acpi_status status;
+
+	ACPI_FUNCTION_NAME(db_execute_setup);
+
+	/* Catenate the current scope to the supplied name */
+
+	info->pathname[0] = 0;
+	if ((info->name[0] != '\\') && (info->name[0] != '/')) {
+		if (acpi_ut_safe_strcat(info->pathname, sizeof(info->pathname),
+					acpi_gbl_db_scope_buf)) {
+			status = AE_BUFFER_OVERFLOW;
+			goto error_exit;
+		}
+	}
+
+	if (acpi_ut_safe_strcat(info->pathname, sizeof(info->pathname),
+				info->name)) {
+		status = AE_BUFFER_OVERFLOW;
+		goto error_exit;
+	}
+
+	acpi_db_prep_namestring(info->pathname);
+
+	acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
+	acpi_os_printf("Evaluating %s\n", info->pathname);
+
+	if (info->flags & EX_SINGLE_STEP) {
+		acpi_gbl_cm_single_step = TRUE;
+		acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+	}
+
+	else {
+		/* No single step, allow redirection to a file */
+
+		acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
+	}
+
+	return (AE_OK);
+
+error_exit:
+
+	ACPI_EXCEPTION((AE_INFO, status, "During setup for method execution"));
+	return (status);
+}
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+u32 acpi_db_get_cache_info(struct acpi_memory_list *cache)
+{
+
+	return (cache->total_allocated - cache->total_freed -
+		cache->current_depth);
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_get_outstanding_allocations
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Current global allocation count minus cache entries
+ *
+ * DESCRIPTION: Determine the current number of "outstanding" allocations --
+ *              those allocations that have not been freed and also are not
+ *              in one of the various object caches.
+ *
+ ******************************************************************************/
+
+static u32 acpi_db_get_outstanding_allocations(void)
+{
+	u32 outstanding = 0;
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+
+	outstanding += acpi_db_get_cache_info(acpi_gbl_state_cache);
+	outstanding += acpi_db_get_cache_info(acpi_gbl_ps_node_cache);
+	outstanding += acpi_db_get_cache_info(acpi_gbl_ps_node_ext_cache);
+	outstanding += acpi_db_get_cache_info(acpi_gbl_operand_cache);
+#endif
+
+	return (outstanding);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_execution_walk
+ *
+ * PARAMETERS:  WALK_CALLBACK
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute a control method. Name is relative to the current
+ *              scope.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_execution_walk(acpi_handle obj_handle,
+		       u32 nesting_level, void *context, void **return_value)
+{
+	union acpi_operand_object *obj_desc;
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+	struct acpi_buffer return_obj;
+	acpi_status status;
+
+	obj_desc = acpi_ns_get_attached_object(node);
+	if (obj_desc->method.param_count) {
+		return (AE_OK);
+	}
+
+	return_obj.pointer = NULL;
+	return_obj.length = ACPI_ALLOCATE_BUFFER;
+
+	acpi_ns_print_node_pathname(node, "Evaluating");
+
+	/* Do the actual method execution */
+
+	acpi_os_printf("\n");
+	acpi_gbl_method_executing = TRUE;
+
+	status = acpi_evaluate_object(node, NULL, NULL, &return_obj);
+
+	acpi_os_printf("Evaluation of [%4.4s] returned %s\n",
+		       acpi_ut_get_node_name(node),
+		       acpi_format_exception(status));
+
+	acpi_gbl_method_executing = FALSE;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_execute
+ *
+ * PARAMETERS:  name                - Name of method to execute
+ *              args                - Parameters to the method
+ *              Types               -
+ *              flags               - single step/no single step
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Execute a control method. Name is relative to the current
+ *              scope.
+ *
+ ******************************************************************************/
+
+void
+acpi_db_execute(char *name, char **args, acpi_object_type * types, u32 flags)
+{
+	acpi_status status;
+	struct acpi_buffer return_obj;
+	char *name_string;
+
+#ifdef ACPI_DEBUG_OUTPUT
+	u32 previous_allocations;
+	u32 allocations;
+#endif
+
+	/*
+	 * Allow one execution to be performed by debugger or single step
+	 * execution will be dead locked by the interpreter mutexes.
+	 */
+	if (acpi_gbl_method_executing) {
+		acpi_os_printf("Only one debugger execution is allowed.\n");
+		return;
+	}
+#ifdef ACPI_DEBUG_OUTPUT
+	/* Memory allocation tracking */
+
+	previous_allocations = acpi_db_get_outstanding_allocations();
+#endif
+
+	if (*name == '*') {
+		(void)acpi_walk_namespace(ACPI_TYPE_METHOD, ACPI_ROOT_OBJECT,
+					  ACPI_UINT32_MAX,
+					  acpi_db_execution_walk, NULL, NULL,
+					  NULL);
+		return;
+	} else {
+		name_string = ACPI_ALLOCATE(strlen(name) + 1);
+		if (!name_string) {
+			return;
+		}
+
+		memset(&acpi_gbl_db_method_info, 0,
+		       sizeof(struct acpi_db_method_info));
+
+		strcpy(name_string, name);
+		acpi_ut_strupr(name_string);
+		acpi_gbl_db_method_info.name = name_string;
+		acpi_gbl_db_method_info.args = args;
+		acpi_gbl_db_method_info.types = types;
+		acpi_gbl_db_method_info.flags = flags;
+
+		return_obj.pointer = NULL;
+		return_obj.length = ACPI_ALLOCATE_BUFFER;
+
+		status = acpi_db_execute_setup(&acpi_gbl_db_method_info);
+		if (ACPI_FAILURE(status)) {
+			ACPI_FREE(name_string);
+			return;
+		}
+
+		/* Get the NS node, determines existence also */
+
+		status = acpi_get_handle(NULL, acpi_gbl_db_method_info.pathname,
+					 &acpi_gbl_db_method_info.method);
+		if (ACPI_SUCCESS(status)) {
+			status =
+			    acpi_db_execute_method(&acpi_gbl_db_method_info,
+						   &return_obj);
+		}
+		ACPI_FREE(name_string);
+	}
+
+	/*
+	 * Allow any handlers in separate threads to complete.
+	 * (Such as Notify handlers invoked from AML executed above).
+	 */
+	acpi_os_sleep((u64)10);
+
+#ifdef ACPI_DEBUG_OUTPUT
+
+	/* Memory allocation tracking */
+
+	allocations =
+	    acpi_db_get_outstanding_allocations() - previous_allocations;
+
+	acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
+
+	if (allocations > 0) {
+		acpi_os_printf
+		    ("0x%X Outstanding allocations after evaluation of %s\n",
+		     allocations, acpi_gbl_db_method_info.pathname);
+	}
+#endif
+
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Evaluation of %s failed with status %s\n",
+			       acpi_gbl_db_method_info.pathname,
+			       acpi_format_exception(status));
+	} else {
+		/* Display a return object, if any */
+
+		if (return_obj.length) {
+			acpi_os_printf("Evaluation of %s returned object %p, "
+				       "external buffer length %X\n",
+				       acpi_gbl_db_method_info.pathname,
+				       return_obj.pointer,
+				       (u32)return_obj.length);
+
+			acpi_db_dump_external_object(return_obj.pointer, 1);
+
+			/* Dump a _PLD buffer if present */
+
+			if (ACPI_COMPARE_NAME
+			    ((ACPI_CAST_PTR
+			      (struct acpi_namespace_node,
+			       acpi_gbl_db_method_info.method)->name.ascii),
+			     METHOD_NAME__PLD)) {
+				acpi_db_dump_pld_buffer(return_obj.pointer);
+			}
+		} else {
+			acpi_os_printf
+			    ("No object was returned from evaluation of %s\n",
+			     acpi_gbl_db_method_info.pathname);
+		}
+	}
+
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_method_thread
+ *
+ * PARAMETERS:  context             - Execution info segment
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Debugger execute thread. Waits for a command line, then
+ *              simply dispatches it.
+ *
+ ******************************************************************************/
+
+static void ACPI_SYSTEM_XFACE acpi_db_method_thread(void *context)
+{
+	acpi_status status;
+	struct acpi_db_method_info *info = context;
+	struct acpi_db_method_info local_info;
+	u32 i;
+	u8 allow;
+	struct acpi_buffer return_obj;
+
+	/*
+	 * acpi_gbl_db_method_info.Arguments will be passed as method arguments.
+	 * Prevent acpi_gbl_db_method_info from being modified by multiple threads
+	 * concurrently.
+	 *
+	 * Note: The arguments we are passing are used by the ASL test suite
+	 * (aslts). Do not change them without updating the tests.
+	 */
+	(void)acpi_os_wait_semaphore(info->info_gate, 1, ACPI_WAIT_FOREVER);
+
+	if (info->init_args) {
+		acpi_db_uint32_to_hex_string(info->num_created,
+					     info->index_of_thread_str);
+		acpi_db_uint32_to_hex_string((u32)acpi_os_get_thread_id(),
+					     info->id_of_thread_str);
+	}
+
+	if (info->threads && (info->num_created < info->num_threads)) {
+		info->threads[info->num_created++] = acpi_os_get_thread_id();
+	}
+
+	local_info = *info;
+	local_info.args = local_info.arguments;
+	local_info.arguments[0] = local_info.num_threads_str;
+	local_info.arguments[1] = local_info.id_of_thread_str;
+	local_info.arguments[2] = local_info.index_of_thread_str;
+	local_info.arguments[3] = NULL;
+
+	local_info.types = local_info.arg_types;
+
+	(void)acpi_os_signal_semaphore(info->info_gate, 1);
+
+	for (i = 0; i < info->num_loops; i++) {
+		status = acpi_db_execute_method(&local_info, &return_obj);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf
+			    ("%s During evaluation of %s at iteration %X\n",
+			     acpi_format_exception(status), info->pathname, i);
+			if (status == AE_ABORT_METHOD) {
+				break;
+			}
+		}
+#if 0
+		if ((i % 100) == 0) {
+			acpi_os_printf("%u loops, Thread 0x%x\n",
+				       i, acpi_os_get_thread_id());
+		}
+
+		if (return_obj.length) {
+			acpi_os_printf
+			    ("Evaluation of %s returned object %p Buflen %X\n",
+			     info->pathname, return_obj.pointer,
+			     (u32)return_obj.length);
+			acpi_db_dump_external_object(return_obj.pointer, 1);
+		}
+#endif
+	}
+
+	/* Signal our completion */
+
+	allow = 0;
+	(void)acpi_os_wait_semaphore(info->thread_complete_gate,
+				     1, ACPI_WAIT_FOREVER);
+	info->num_completed++;
+
+	if (info->num_completed == info->num_threads) {
+
+		/* Do signal for main thread once only */
+		allow = 1;
+	}
+
+	(void)acpi_os_signal_semaphore(info->thread_complete_gate, 1);
+
+	if (allow) {
+		status = acpi_os_signal_semaphore(info->main_thread_gate, 1);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf
+			    ("Could not signal debugger thread sync semaphore, %s\n",
+			     acpi_format_exception(status));
+		}
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_create_execution_threads
+ *
+ * PARAMETERS:  num_threads_arg         - Number of threads to create
+ *              num_loops_arg           - Loop count for the thread(s)
+ *              method_name_arg         - Control method to execute
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Create threads to execute method(s)
+ *
+ ******************************************************************************/
+
+void
+acpi_db_create_execution_threads(char *num_threads_arg,
+				 char *num_loops_arg, char *method_name_arg)
+{
+	acpi_status status;
+	u32 num_threads;
+	u32 num_loops;
+	u32 i;
+	u32 size;
+	acpi_mutex main_thread_gate;
+	acpi_mutex thread_complete_gate;
+	acpi_mutex info_gate;
+
+	/* Get the arguments */
+
+	num_threads = strtoul(num_threads_arg, NULL, 0);
+	num_loops = strtoul(num_loops_arg, NULL, 0);
+
+	if (!num_threads || !num_loops) {
+		acpi_os_printf("Bad argument: Threads %X, Loops %X\n",
+			       num_threads, num_loops);
+		return;
+	}
+
+	/*
+	 * Create the semaphore for synchronization of
+	 * the created threads with the main thread.
+	 */
+	status = acpi_os_create_semaphore(1, 0, &main_thread_gate);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not create semaphore for "
+			       "synchronization with the main thread, %s\n",
+			       acpi_format_exception(status));
+		return;
+	}
+
+	/*
+	 * Create the semaphore for synchronization
+	 * between the created threads.
+	 */
+	status = acpi_os_create_semaphore(1, 1, &thread_complete_gate);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not create semaphore for "
+			       "synchronization between the created threads, %s\n",
+			       acpi_format_exception(status));
+
+		(void)acpi_os_delete_semaphore(main_thread_gate);
+		return;
+	}
+
+	status = acpi_os_create_semaphore(1, 1, &info_gate);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not create semaphore for "
+			       "synchronization of AcpiGbl_DbMethodInfo, %s\n",
+			       acpi_format_exception(status));
+
+		(void)acpi_os_delete_semaphore(thread_complete_gate);
+		(void)acpi_os_delete_semaphore(main_thread_gate);
+		return;
+	}
+
+	memset(&acpi_gbl_db_method_info, 0, sizeof(struct acpi_db_method_info));
+
+	/* Array to store IDs of threads */
+
+	acpi_gbl_db_method_info.num_threads = num_threads;
+	size = sizeof(acpi_thread_id) * acpi_gbl_db_method_info.num_threads;
+
+	acpi_gbl_db_method_info.threads = acpi_os_allocate(size);
+	if (acpi_gbl_db_method_info.threads == NULL) {
+		acpi_os_printf("No memory for thread IDs array\n");
+		(void)acpi_os_delete_semaphore(main_thread_gate);
+		(void)acpi_os_delete_semaphore(thread_complete_gate);
+		(void)acpi_os_delete_semaphore(info_gate);
+		return;
+	}
+	memset(acpi_gbl_db_method_info.threads, 0, size);
+
+	/* Setup the context to be passed to each thread */
+
+	acpi_gbl_db_method_info.name = method_name_arg;
+	acpi_gbl_db_method_info.flags = 0;
+	acpi_gbl_db_method_info.num_loops = num_loops;
+	acpi_gbl_db_method_info.main_thread_gate = main_thread_gate;
+	acpi_gbl_db_method_info.thread_complete_gate = thread_complete_gate;
+	acpi_gbl_db_method_info.info_gate = info_gate;
+
+	/* Init arguments to be passed to method */
+
+	acpi_gbl_db_method_info.init_args = 1;
+	acpi_gbl_db_method_info.args = acpi_gbl_db_method_info.arguments;
+	acpi_gbl_db_method_info.arguments[0] =
+	    acpi_gbl_db_method_info.num_threads_str;
+	acpi_gbl_db_method_info.arguments[1] =
+	    acpi_gbl_db_method_info.id_of_thread_str;
+	acpi_gbl_db_method_info.arguments[2] =
+	    acpi_gbl_db_method_info.index_of_thread_str;
+	acpi_gbl_db_method_info.arguments[3] = NULL;
+
+	acpi_gbl_db_method_info.types = acpi_gbl_db_method_info.arg_types;
+	acpi_gbl_db_method_info.arg_types[0] = ACPI_TYPE_INTEGER;
+	acpi_gbl_db_method_info.arg_types[1] = ACPI_TYPE_INTEGER;
+	acpi_gbl_db_method_info.arg_types[2] = ACPI_TYPE_INTEGER;
+
+	acpi_db_uint32_to_hex_string(num_threads,
+				     acpi_gbl_db_method_info.num_threads_str);
+
+	status = acpi_db_execute_setup(&acpi_gbl_db_method_info);
+	if (ACPI_FAILURE(status)) {
+		goto cleanup_and_exit;
+	}
+
+	/* Get the NS node, determines existence also */
+
+	status = acpi_get_handle(NULL, acpi_gbl_db_method_info.pathname,
+				 &acpi_gbl_db_method_info.method);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("%s Could not get handle for %s\n",
+			       acpi_format_exception(status),
+			       acpi_gbl_db_method_info.pathname);
+		goto cleanup_and_exit;
+	}
+
+	/* Create the threads */
+
+	acpi_os_printf("Creating %X threads to execute %X times each\n",
+		       num_threads, num_loops);
+
+	for (i = 0; i < (num_threads); i++) {
+		status =
+		    acpi_os_execute(OSL_DEBUGGER_EXEC_THREAD,
+				    acpi_db_method_thread,
+				    &acpi_gbl_db_method_info);
+		if (ACPI_FAILURE(status)) {
+			break;
+		}
+	}
+
+	/* Wait for all threads to complete */
+
+	(void)acpi_os_wait_semaphore(main_thread_gate, 1, ACPI_WAIT_FOREVER);
+
+	acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
+	acpi_os_printf("All threads (%X) have completed\n", num_threads);
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+
+cleanup_and_exit:
+
+	/* Cleanup and exit */
+
+	(void)acpi_os_delete_semaphore(main_thread_gate);
+	(void)acpi_os_delete_semaphore(thread_complete_gate);
+	(void)acpi_os_delete_semaphore(info_gate);
+
+	acpi_os_free(acpi_gbl_db_method_info.threads);
+	acpi_gbl_db_method_info.threads = NULL;
+}
diff --git a/drivers/acpi/acpica/dbfileio.c b/drivers/acpi/acpica/dbfileio.c
new file mode 100644
index 000000000000..d0e6b20ce82a
--- /dev/null
+++ b/drivers/acpi/acpica/dbfileio.c
@@ -0,0 +1,256 @@
+/*******************************************************************************
+ *
+ * Module Name: dbfileio - Debugger file I/O commands. These can't usually
+ *              be used when running the debugger in Ring 0 (Kernel mode)
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdebug.h"
+#include "actables.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbfileio")
+
+#ifdef ACPI_DEBUGGER
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_close_debug_file
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: If open, close the current debug output file
+ *
+ ******************************************************************************/
+void acpi_db_close_debug_file(void)
+{
+
+#ifdef ACPI_APPLICATION
+
+	if (acpi_gbl_debug_file) {
+		fclose(acpi_gbl_debug_file);
+		acpi_gbl_debug_file = NULL;
+		acpi_gbl_db_output_to_file = FALSE;
+		acpi_os_printf("Debug output file %s closed\n",
+			       acpi_gbl_db_debug_filename);
+	}
+#endif
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_open_debug_file
+ *
+ * PARAMETERS:  name                - Filename to open
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Open a file where debug output will be directed.
+ *
+ ******************************************************************************/
+
+void acpi_db_open_debug_file(char *name)
+{
+
+#ifdef ACPI_APPLICATION
+
+	acpi_db_close_debug_file();
+	acpi_gbl_debug_file = fopen(name, "w+");
+	if (!acpi_gbl_debug_file) {
+		acpi_os_printf("Could not open debug file %s\n", name);
+		return;
+	}
+
+	acpi_os_printf("Debug output file %s opened\n", name);
+	strncpy(acpi_gbl_db_debug_filename, name,
+		sizeof(acpi_gbl_db_debug_filename));
+	acpi_gbl_db_output_to_file = TRUE;
+
+#endif
+}
+#endif
+
+#ifdef ACPI_APPLICATION
+#include "acapps.h"
+
+/*******************************************************************************
+ *
+ * FUNCTION:    ae_local_load_table
+ *
+ * PARAMETERS:  table           - pointer to a buffer containing the entire
+ *                                table to be loaded
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to load a table from the caller's
+ *              buffer. The buffer must contain an entire ACPI Table including
+ *              a valid header. The header fields will be verified, and if it
+ *              is determined that the table is invalid, the call will fail.
+ *
+ ******************************************************************************/
+
+static acpi_status ae_local_load_table(struct acpi_table_header *table)
+{
+	acpi_status status = AE_OK;
+
+	ACPI_FUNCTION_TRACE(ae_local_load_table);
+
+#if 0
+/*    struct acpi_table_desc          table_info; */
+
+	if (!table) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	table_info.pointer = table;
+	status = acpi_tb_recognize_table(&table_info, ACPI_TABLE_ALL);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Install the new table into the local data structures */
+
+	status = acpi_tb_init_table_descriptor(&table_info);
+	if (ACPI_FAILURE(status)) {
+		if (status == AE_ALREADY_EXISTS) {
+
+			/* Table already exists, no error */
+
+			status = AE_OK;
+		}
+
+		/* Free table allocated by acpi_tb_get_table */
+
+		acpi_tb_delete_single_table(&table_info);
+		return_ACPI_STATUS(status);
+	}
+#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
+
+	status =
+	    acpi_ns_load_table(table_info.installed_desc, acpi_gbl_root_node);
+	if (ACPI_FAILURE(status)) {
+
+		/* Uninstall table and free the buffer */
+
+		acpi_tb_delete_tables_by_type(ACPI_TABLE_ID_DSDT);
+		return_ACPI_STATUS(status);
+	}
+#endif
+#endif
+
+	return_ACPI_STATUS(status);
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_get_table_from_file
+ *
+ * PARAMETERS:  filename        - File where table is located
+ *              return_table    - Where a pointer to the table is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Load an ACPI table from a file
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_db_get_table_from_file(char *filename,
+			    struct acpi_table_header **return_table,
+			    u8 must_be_aml_file)
+{
+#ifdef ACPI_APPLICATION
+	acpi_status status;
+	struct acpi_table_header *table;
+	u8 is_aml_table = TRUE;
+
+	status = acpi_ut_read_table_from_file(filename, &table);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	if (must_be_aml_file) {
+		is_aml_table = acpi_ut_is_aml_table(table);
+		if (!is_aml_table) {
+			ACPI_EXCEPTION((AE_INFO, AE_OK,
+					"Input for -e is not an AML table: "
+					"\"%4.4s\" (must be DSDT/SSDT)",
+					table->signature));
+			return (AE_TYPE);
+		}
+	}
+
+	if (is_aml_table) {
+
+		/* Attempt to recognize and install the table */
+
+		status = ae_local_load_table(table);
+		if (ACPI_FAILURE(status)) {
+			if (status == AE_ALREADY_EXISTS) {
+				acpi_os_printf
+				    ("Table %4.4s is already installed\n",
+				     table->signature);
+			} else {
+				acpi_os_printf("Could not install table, %s\n",
+					       acpi_format_exception(status));
+			}
+
+			return (status);
+		}
+
+		acpi_tb_print_table_header(0, table);
+
+		fprintf(stderr,
+			"Acpi table [%4.4s] successfully installed and loaded\n",
+			table->signature);
+	}
+
+	acpi_gbl_acpi_hardware_present = FALSE;
+	if (return_table) {
+		*return_table = table;
+	}
+
+#endif				/* ACPI_APPLICATION */
+	return (AE_OK);
+}
diff --git a/drivers/acpi/acpica/dbhistry.c b/drivers/acpi/acpica/dbhistry.c
new file mode 100644
index 000000000000..9c66a9eadd38
--- /dev/null
+++ b/drivers/acpi/acpica/dbhistry.c
@@ -0,0 +1,239 @@
+/******************************************************************************
+ *
+ * Module Name: dbhistry - debugger HISTORY command
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdebug.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbhistry")
+
+#define HI_NO_HISTORY       0
+#define HI_RECORD_HISTORY   1
+#define HISTORY_SIZE        40
+typedef struct history_info {
+	char *command;
+	u32 cmd_num;
+
+} HISTORY_INFO;
+
+static HISTORY_INFO acpi_gbl_history_buffer[HISTORY_SIZE];
+static u16 acpi_gbl_lo_history = 0;
+static u16 acpi_gbl_num_history = 0;
+static u16 acpi_gbl_next_history_index = 0;
+u32 acpi_gbl_next_cmd_num = 1;
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_add_to_history
+ *
+ * PARAMETERS:  command_line    - Command to add
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Add a command line to the history buffer.
+ *
+ ******************************************************************************/
+
+void acpi_db_add_to_history(char *command_line)
+{
+	u16 cmd_len;
+	u16 buffer_len;
+
+	/* Put command into the next available slot */
+
+	cmd_len = (u16)strlen(command_line);
+	if (!cmd_len) {
+		return;
+	}
+
+	if (acpi_gbl_history_buffer[acpi_gbl_next_history_index].command !=
+	    NULL) {
+		buffer_len =
+		    (u16)
+		    strlen(acpi_gbl_history_buffer[acpi_gbl_next_history_index].
+			   command);
+
+		if (cmd_len > buffer_len) {
+			acpi_os_free(acpi_gbl_history_buffer
+				     [acpi_gbl_next_history_index].command);
+			acpi_gbl_history_buffer[acpi_gbl_next_history_index].
+			    command = acpi_os_allocate(cmd_len + 1);
+		}
+	} else {
+		acpi_gbl_history_buffer[acpi_gbl_next_history_index].command =
+		    acpi_os_allocate(cmd_len + 1);
+	}
+
+	strcpy(acpi_gbl_history_buffer[acpi_gbl_next_history_index].command,
+	       command_line);
+
+	acpi_gbl_history_buffer[acpi_gbl_next_history_index].cmd_num =
+	    acpi_gbl_next_cmd_num;
+
+	/* Adjust indexes */
+
+	if ((acpi_gbl_num_history == HISTORY_SIZE) &&
+	    (acpi_gbl_next_history_index == acpi_gbl_lo_history)) {
+		acpi_gbl_lo_history++;
+		if (acpi_gbl_lo_history >= HISTORY_SIZE) {
+			acpi_gbl_lo_history = 0;
+		}
+	}
+
+	acpi_gbl_next_history_index++;
+	if (acpi_gbl_next_history_index >= HISTORY_SIZE) {
+		acpi_gbl_next_history_index = 0;
+	}
+
+	acpi_gbl_next_cmd_num++;
+	if (acpi_gbl_num_history < HISTORY_SIZE) {
+		acpi_gbl_num_history++;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_history
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display the contents of the history buffer
+ *
+ ******************************************************************************/
+
+void acpi_db_display_history(void)
+{
+	u32 i;
+	u16 history_index;
+
+	history_index = acpi_gbl_lo_history;
+
+	/* Dump entire history buffer */
+
+	for (i = 0; i < acpi_gbl_num_history; i++) {
+		if (acpi_gbl_history_buffer[history_index].command) {
+			acpi_os_printf("%3ld %s\n",
+				       acpi_gbl_history_buffer[history_index].
+				       cmd_num,
+				       acpi_gbl_history_buffer[history_index].
+				       command);
+		}
+
+		history_index++;
+		if (history_index >= HISTORY_SIZE) {
+			history_index = 0;
+		}
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_get_from_history
+ *
+ * PARAMETERS:  command_num_arg         - String containing the number of the
+ *                                        command to be retrieved
+ *
+ * RETURN:      Pointer to the retrieved command. Null on error.
+ *
+ * DESCRIPTION: Get a command from the history buffer
+ *
+ ******************************************************************************/
+
+char *acpi_db_get_from_history(char *command_num_arg)
+{
+	u32 cmd_num;
+
+	if (command_num_arg == NULL) {
+		cmd_num = acpi_gbl_next_cmd_num - 1;
+	}
+
+	else {
+		cmd_num = strtoul(command_num_arg, NULL, 0);
+	}
+
+	return (acpi_db_get_history_by_index(cmd_num));
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_get_history_by_index
+ *
+ * PARAMETERS:  cmd_num             - Index of the desired history entry.
+ *                                    Values are 0...(acpi_gbl_next_cmd_num - 1)
+ *
+ * RETURN:      Pointer to the retrieved command. Null on error.
+ *
+ * DESCRIPTION: Get a command from the history buffer
+ *
+ ******************************************************************************/
+
+char *acpi_db_get_history_by_index(u32 cmd_num)
+{
+	u32 i;
+	u16 history_index;
+
+	/* Search history buffer */
+
+	history_index = acpi_gbl_lo_history;
+	for (i = 0; i < acpi_gbl_num_history; i++) {
+		if (acpi_gbl_history_buffer[history_index].cmd_num == cmd_num) {
+
+			/* Found the command, return it */
+
+			return (acpi_gbl_history_buffer[history_index].command);
+		}
+
+		/* History buffer is circular */
+
+		history_index++;
+		if (history_index >= HISTORY_SIZE) {
+			history_index = 0;
+		}
+	}
+
+	acpi_os_printf("Invalid history number: %u\n", history_index);
+	return (NULL);
+}
diff --git a/drivers/acpi/acpica/dbinput.c b/drivers/acpi/acpica/dbinput.c
new file mode 100644
index 000000000000..0480254437f1
--- /dev/null
+++ b/drivers/acpi/acpica/dbinput.c
@@ -0,0 +1,1267 @@
+/*******************************************************************************
+ *
+ * Module Name: dbinput - user front-end to the AML debugger
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdebug.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbinput")
+
+/* Local prototypes */
+static u32 acpi_db_get_line(char *input_buffer);
+
+static u32 acpi_db_match_command(char *user_command);
+
+static void acpi_db_single_thread(void);
+
+static void acpi_db_display_command_info(char *command, u8 display_all);
+
+static void acpi_db_display_help(char *command);
+
+static u8
+acpi_db_match_command_help(char *command,
+			   const struct acpi_db_command_help *help);
+
+/*
+ * Top-level debugger commands.
+ *
+ * This list of commands must match the string table below it
+ */
+enum acpi_ex_debugger_commands {
+	CMD_NOT_FOUND = 0,
+	CMD_NULL,
+	CMD_ALLOCATIONS,
+	CMD_ARGS,
+	CMD_ARGUMENTS,
+	CMD_BREAKPOINT,
+	CMD_BUSINFO,
+	CMD_CALL,
+	CMD_DEBUG,
+	CMD_DISASSEMBLE,
+	CMD_DISASM,
+	CMD_DUMP,
+	CMD_EVALUATE,
+	CMD_EXECUTE,
+	CMD_EXIT,
+	CMD_FIND,
+	CMD_GO,
+	CMD_HANDLERS,
+	CMD_HELP,
+	CMD_HELP2,
+	CMD_HISTORY,
+	CMD_HISTORY_EXE,
+	CMD_HISTORY_LAST,
+	CMD_INFORMATION,
+	CMD_INTEGRITY,
+	CMD_INTO,
+	CMD_LEVEL,
+	CMD_LIST,
+	CMD_LOCALS,
+	CMD_LOCKS,
+	CMD_METHODS,
+	CMD_NAMESPACE,
+	CMD_NOTIFY,
+	CMD_OBJECTS,
+	CMD_OSI,
+	CMD_OWNER,
+	CMD_PATHS,
+	CMD_PREDEFINED,
+	CMD_PREFIX,
+	CMD_QUIT,
+	CMD_REFERENCES,
+	CMD_RESOURCES,
+	CMD_RESULTS,
+	CMD_SET,
+	CMD_STATS,
+	CMD_STOP,
+	CMD_TABLES,
+	CMD_TEMPLATE,
+	CMD_TRACE,
+	CMD_TREE,
+	CMD_TYPE,
+#ifdef ACPI_APPLICATION
+	CMD_ENABLEACPI,
+	CMD_EVENT,
+	CMD_GPE,
+	CMD_GPES,
+	CMD_SCI,
+	CMD_SLEEP,
+
+	CMD_CLOSE,
+	CMD_LOAD,
+	CMD_OPEN,
+	CMD_UNLOAD,
+
+	CMD_TERMINATE,
+	CMD_THREADS,
+
+	CMD_TEST,
+#endif
+};
+
+#define CMD_FIRST_VALID     2
+
+/* Second parameter is the required argument count */
+
+static const struct acpi_db_command_info acpi_gbl_db_commands[] = {
+	{"<NOT FOUND>", 0},
+	{"<NULL>", 0},
+	{"ALLOCATIONS", 0},
+	{"ARGS", 0},
+	{"ARGUMENTS", 0},
+	{"BREAKPOINT", 1},
+	{"BUSINFO", 0},
+	{"CALL", 0},
+	{"DEBUG", 1},
+	{"DISASSEMBLE", 1},
+	{"DISASM", 1},
+	{"DUMP", 1},
+	{"EVALUATE", 1},
+	{"EXECUTE", 1},
+	{"EXIT", 0},
+	{"FIND", 1},
+	{"GO", 0},
+	{"HANDLERS", 0},
+	{"HELP", 0},
+	{"?", 0},
+	{"HISTORY", 0},
+	{"!", 1},
+	{"!!", 0},
+	{"INFORMATION", 0},
+	{"INTEGRITY", 0},
+	{"INTO", 0},
+	{"LEVEL", 0},
+	{"LIST", 0},
+	{"LOCALS", 0},
+	{"LOCKS", 0},
+	{"METHODS", 0},
+	{"NAMESPACE", 0},
+	{"NOTIFY", 2},
+	{"OBJECTS", 0},
+	{"OSI", 0},
+	{"OWNER", 1},
+	{"PATHS", 0},
+	{"PREDEFINED", 0},
+	{"PREFIX", 0},
+	{"QUIT", 0},
+	{"REFERENCES", 1},
+	{"RESOURCES", 0},
+	{"RESULTS", 0},
+	{"SET", 3},
+	{"STATS", 1},
+	{"STOP", 0},
+	{"TABLES", 0},
+	{"TEMPLATE", 1},
+	{"TRACE", 1},
+	{"TREE", 0},
+	{"TYPE", 1},
+#ifdef ACPI_APPLICATION
+	{"ENABLEACPI", 0},
+	{"EVENT", 1},
+	{"GPE", 1},
+	{"GPES", 0},
+	{"SCI", 0},
+	{"SLEEP", 0},
+
+	{"CLOSE", 0},
+	{"LOAD", 1},
+	{"OPEN", 1},
+	{"UNLOAD", 1},
+
+	{"TERMINATE", 0},
+	{"THREADS", 3},
+
+	{"TEST", 1},
+#endif
+	{NULL, 0}
+};
+
+/*
+ * Help for all debugger commands. First argument is the number of lines
+ * of help to output for the command.
+ */
+static const struct acpi_db_command_help acpi_gbl_db_command_help[] = {
+	{0, "\nGeneral-Purpose Commands:", "\n"},
+	{1, "  Allocations", "Display list of current memory allocations\n"},
+	{2, "  Dump <Address>|<Namepath>", "\n"},
+	{0, "       [Byte|Word|Dword|Qword]",
+	 "Display ACPI objects or memory\n"},
+	{1, "  Handlers", "Info about global handlers\n"},
+	{1, "  Help [Command]", "This help screen or individual command\n"},
+	{1, "  History", "Display command history buffer\n"},
+	{1, "  Level <DebugLevel>] [console]",
+	 "Get/Set debug level for file or console\n"},
+	{1, "  Locks", "Current status of internal mutexes\n"},
+	{1, "  Osi [Install|Remove <name>]",
+	 "Display or modify global _OSI list\n"},
+	{1, "  Quit or Exit", "Exit this command\n"},
+	{8, "  Stats <SubCommand>",
+	 "Display namespace and memory statistics\n"},
+	{1, "     Allocations", "Display list of current memory allocations\n"},
+	{1, "     Memory", "Dump internal memory lists\n"},
+	{1, "     Misc", "Namespace search and mutex stats\n"},
+	{1, "     Objects", "Summary of namespace objects\n"},
+	{1, "     Sizes", "Sizes for each of the internal objects\n"},
+	{1, "     Stack", "Display CPU stack usage\n"},
+	{1, "     Tables", "Info about current ACPI table(s)\n"},
+	{1, "  Tables", "Display info about loaded ACPI tables\n"},
+	{1, "  ! <CommandNumber>", "Execute command from history buffer\n"},
+	{1, "  !!", "Execute last command again\n"},
+
+	{0, "\nNamespace Access Commands:", "\n"},
+	{1, "  Businfo", "Display system bus info\n"},
+	{1, "  Disassemble <Method>", "Disassemble a control method\n"},
+	{1, "  Find <AcpiName> (? is wildcard)",
+	 "Find ACPI name(s) with wildcards\n"},
+	{1, "  Integrity", "Validate namespace integrity\n"},
+	{1, "  Methods", "Display list of loaded control methods\n"},
+	{1, "  Namespace [Object] [Depth]",
+	 "Display loaded namespace tree/subtree\n"},
+	{1, "  Notify <Object> <Value>", "Send a notification on Object\n"},
+	{1, "  Objects [ObjectType]",
+	 "Display summary of all objects or just given type\n"},
+	{1, "  Owner <OwnerId> [Depth]",
+	 "Display loaded namespace by object owner\n"},
+	{1, "  Paths", "Display full pathnames of namespace objects\n"},
+	{1, "  Predefined", "Check all predefined names\n"},
+	{1, "  Prefix [<Namepath>]", "Set or Get current execution prefix\n"},
+	{1, "  References <Addr>", "Find all references to object at addr\n"},
+	{1, "  Resources [DeviceName]",
+	 "Display Device resources (no arg = all devices)\n"},
+	{1, "  Set N <NamedObject> <Value>", "Set value for named integer\n"},
+	{1, "  Template <Object>", "Format/dump a Buffer/ResourceTemplate\n"},
+	{1, "  Type <Object>", "Display object type\n"},
+
+	{0, "\nControl Method Execution Commands:", "\n"},
+	{1, "  Arguments (or Args)", "Display method arguments\n"},
+	{1, "  Breakpoint <AmlOffset>", "Set an AML execution breakpoint\n"},
+	{1, "  Call", "Run to next control method invocation\n"},
+	{1, "  Debug <Namepath> [Arguments]", "Single Step a control method\n"},
+	{6, "  Evaluate", "Synonym for Execute\n"},
+	{5, "  Execute <Namepath> [Arguments]", "Execute control method\n"},
+	{1, "     Hex Integer", "Integer method argument\n"},
+	{1, "     \"Ascii String\"", "String method argument\n"},
+	{1, "     (Hex Byte List)", "Buffer method argument\n"},
+	{1, "     [Package Element List]", "Package method argument\n"},
+	{1, "  Go", "Allow method to run to completion\n"},
+	{1, "  Information", "Display info about the current method\n"},
+	{1, "  Into", "Step into (not over) a method call\n"},
+	{1, "  List [# of Aml Opcodes]", "Display method ASL statements\n"},
+	{1, "  Locals", "Display method local variables\n"},
+	{1, "  Results", "Display method result stack\n"},
+	{1, "  Set <A|L> <#> <Value>", "Set method data (Arguments/Locals)\n"},
+	{1, "  Stop", "Terminate control method\n"},
+	{5, "  Trace <State> [<Namepath>] [Once]",
+	 "Trace control method execution\n"},
+	{1, "     Enable", "Enable all messages\n"},
+	{1, "     Disable", "Disable tracing\n"},
+	{1, "     Method", "Enable method execution messages\n"},
+	{1, "     Opcode", "Enable opcode execution messages\n"},
+	{1, "  Tree", "Display control method calling tree\n"},
+	{1, "  <Enter>", "Single step next AML opcode (over calls)\n"},
+
+#ifdef ACPI_APPLICATION
+	{0, "\nHardware Simulation Commands:", "\n"},
+	{1, "  EnableAcpi", "Enable ACPI (hardware) mode\n"},
+	{1, "  Event <F|G> <Value>", "Generate AcpiEvent (Fixed/GPE)\n"},
+	{1, "  Gpe <GpeNum> [GpeBlockDevice]", "Simulate a GPE\n"},
+	{1, "  Gpes", "Display info on all GPE devices\n"},
+	{1, "  Sci", "Generate an SCI\n"},
+	{1, "  Sleep [SleepState]", "Simulate sleep/wake sequence(s) (0-5)\n"},
+
+	{0, "\nFile I/O Commands:", "\n"},
+	{1, "  Close", "Close debug output file\n"},
+	{1, "  Load <Input Filename>", "Load ACPI table from a file\n"},
+	{1, "  Open <Output Filename>", "Open a file for debug output\n"},
+	{1, "  Unload <Namepath>",
+	 "Unload an ACPI table via namespace object\n"},
+
+	{0, "\nUser Space Commands:", "\n"},
+	{1, "  Terminate", "Delete namespace and all internal objects\n"},
+	{1, "  Thread <Threads><Loops><NamePath>",
+	 "Spawn threads to execute method(s)\n"},
+
+	{0, "\nDebug Test Commands:", "\n"},
+	{3, "  Test <TestName>", "Invoke a debug test\n"},
+	{1, "     Objects", "Read/write/compare all namespace data objects\n"},
+	{1, "     Predefined",
+	 "Execute all ACPI predefined names (_STA, etc.)\n"},
+#endif
+	{0, NULL, NULL}
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_match_command_help
+ *
+ * PARAMETERS:  command             - Command string to match
+ *              help                - Help table entry to attempt match
+ *
+ * RETURN:      TRUE if command matched, FALSE otherwise
+ *
+ * DESCRIPTION: Attempt to match a command in the help table in order to
+ *              print help information for a single command.
+ *
+ ******************************************************************************/
+
+static u8
+acpi_db_match_command_help(char *command,
+			   const struct acpi_db_command_help *help)
+{
+	char *invocation = help->invocation;
+	u32 line_count;
+
+	/* Valid commands in the help table begin with a couple of spaces */
+
+	if (*invocation != ' ') {
+		return (FALSE);
+	}
+
+	while (*invocation == ' ') {
+		invocation++;
+	}
+
+	/* Match command name (full command or substring) */
+
+	while ((*command) && (*invocation) && (*invocation != ' ')) {
+		if (tolower((int)*command) != tolower((int)*invocation)) {
+			return (FALSE);
+		}
+
+		invocation++;
+		command++;
+	}
+
+	/* Print the appropriate number of help lines */
+
+	line_count = help->line_count;
+	while (line_count) {
+		acpi_os_printf("%-38s : %s", help->invocation,
+			       help->description);
+		help++;
+		line_count--;
+	}
+
+	return (TRUE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_command_info
+ *
+ * PARAMETERS:  command             - Command string to match
+ *              display_all         - Display all matching commands, or just
+ *                                    the first one (substring match)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display help information for a Debugger command.
+ *
+ ******************************************************************************/
+
+static void acpi_db_display_command_info(char *command, u8 display_all)
+{
+	const struct acpi_db_command_help *next;
+	u8 matched;
+
+	next = acpi_gbl_db_command_help;
+	while (next->invocation) {
+		matched = acpi_db_match_command_help(command, next);
+		if (!display_all && matched) {
+			return;
+		}
+
+		next++;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_help
+ *
+ * PARAMETERS:  command             - Optional command string to display help.
+ *                                    if not specified, all debugger command
+ *                                    help strings are displayed
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display help for a single debugger command, or all of them.
+ *
+ ******************************************************************************/
+
+static void acpi_db_display_help(char *command)
+{
+	const struct acpi_db_command_help *next = acpi_gbl_db_command_help;
+
+	if (!command) {
+
+		/* No argument to help, display help for all commands */
+
+		while (next->invocation) {
+			acpi_os_printf("%-38s%s", next->invocation,
+				       next->description);
+			next++;
+		}
+	} else {
+		/* Display help for all commands that match the subtring */
+
+		acpi_db_display_command_info(command, TRUE);
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_get_next_token
+ *
+ * PARAMETERS:  string          - Command buffer
+ *              next            - Return value, end of next token
+ *
+ * RETURN:      Pointer to the start of the next token.
+ *
+ * DESCRIPTION: Command line parsing. Get the next token on the command line
+ *
+ ******************************************************************************/
+
+char *acpi_db_get_next_token(char *string,
+			     char **next, acpi_object_type * return_type)
+{
+	char *start;
+	u32 depth;
+	acpi_object_type type = ACPI_TYPE_INTEGER;
+
+	/* At end of buffer? */
+
+	if (!string || !(*string)) {
+		return (NULL);
+	}
+
+	/* Remove any spaces at the beginning */
+
+	if (*string == ' ') {
+		while (*string && (*string == ' ')) {
+			string++;
+		}
+
+		if (!(*string)) {
+			return (NULL);
+		}
+	}
+
+	switch (*string) {
+	case '"':
+
+		/* This is a quoted string, scan until closing quote */
+
+		string++;
+		start = string;
+		type = ACPI_TYPE_STRING;
+
+		/* Find end of string */
+
+		while (*string && (*string != '"')) {
+			string++;
+		}
+		break;
+
+	case '(':
+
+		/* This is the start of a buffer, scan until closing paren */
+
+		string++;
+		start = string;
+		type = ACPI_TYPE_BUFFER;
+
+		/* Find end of buffer */
+
+		while (*string && (*string != ')')) {
+			string++;
+		}
+		break;
+
+	case '[':
+
+		/* This is the start of a package, scan until closing bracket */
+
+		string++;
+		depth = 1;
+		start = string;
+		type = ACPI_TYPE_PACKAGE;
+
+		/* Find end of package (closing bracket) */
+
+		while (*string) {
+
+			/* Handle String package elements */
+
+			if (*string == '"') {
+				/* Find end of string */
+
+				string++;
+				while (*string && (*string != '"')) {
+					string++;
+				}
+				if (!(*string)) {
+					break;
+				}
+			} else if (*string == '[') {
+				depth++;	/* A nested package declaration */
+			} else if (*string == ']') {
+				depth--;
+				if (depth == 0) {	/* Found final package closing bracket */
+					break;
+				}
+			}
+
+			string++;
+		}
+		break;
+
+	default:
+
+		start = string;
+
+		/* Find end of token */
+
+		while (*string && (*string != ' ')) {
+			string++;
+		}
+		break;
+	}
+
+	if (!(*string)) {
+		*next = NULL;
+	} else {
+		*string = 0;
+		*next = string + 1;
+	}
+
+	*return_type = type;
+	return (start);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_get_line
+ *
+ * PARAMETERS:  input_buffer        - Command line buffer
+ *
+ * RETURN:      Count of arguments to the command
+ *
+ * DESCRIPTION: Get the next command line from the user. Gets entire line
+ *              up to the next newline
+ *
+ ******************************************************************************/
+
+static u32 acpi_db_get_line(char *input_buffer)
+{
+	u32 i;
+	u32 count;
+	char *next;
+	char *this;
+
+	if (acpi_ut_safe_strcpy
+	    (acpi_gbl_db_parsed_buf, sizeof(acpi_gbl_db_parsed_buf),
+	     input_buffer)) {
+		acpi_os_printf
+		    ("Buffer overflow while parsing input line (max %u characters)\n",
+		     sizeof(acpi_gbl_db_parsed_buf));
+		return (0);
+	}
+
+	this = acpi_gbl_db_parsed_buf;
+	for (i = 0; i < ACPI_DEBUGGER_MAX_ARGS; i++) {
+		acpi_gbl_db_args[i] = acpi_db_get_next_token(this, &next,
+							     &acpi_gbl_db_arg_types
+							     [i]);
+		if (!acpi_gbl_db_args[i]) {
+			break;
+		}
+
+		this = next;
+	}
+
+	/* Uppercase the actual command */
+
+	if (acpi_gbl_db_args[0]) {
+		acpi_ut_strupr(acpi_gbl_db_args[0]);
+	}
+
+	count = i;
+	if (count) {
+		count--;	/* Number of args only */
+	}
+
+	return (count);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_match_command
+ *
+ * PARAMETERS:  user_command            - User command line
+ *
+ * RETURN:      Index into command array, -1 if not found
+ *
+ * DESCRIPTION: Search command array for a command match
+ *
+ ******************************************************************************/
+
+static u32 acpi_db_match_command(char *user_command)
+{
+	u32 i;
+
+	if (!user_command || user_command[0] == 0) {
+		return (CMD_NULL);
+	}
+
+	for (i = CMD_FIRST_VALID; acpi_gbl_db_commands[i].name; i++) {
+		if (strstr(acpi_gbl_db_commands[i].name, user_command) ==
+		    acpi_gbl_db_commands[i].name) {
+			return (i);
+		}
+	}
+
+	/* Command not recognized */
+
+	return (CMD_NOT_FOUND);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_command_dispatch
+ *
+ * PARAMETERS:  input_buffer        - Command line buffer
+ *              walk_state          - Current walk
+ *              op                  - Current (executing) parse op
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Command dispatcher.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_db_command_dispatch(char *input_buffer,
+			 struct acpi_walk_state * walk_state,
+			 union acpi_parse_object * op)
+{
+	u32 temp;
+	u32 command_index;
+	u32 param_count;
+	char *command_line;
+	acpi_status status = AE_CTRL_TRUE;
+
+	/* If acpi_terminate has been called, terminate this thread */
+
+	if (acpi_gbl_db_terminate_loop) {
+		return (AE_CTRL_TERMINATE);
+	}
+
+	/* Find command and add to the history buffer */
+
+	param_count = acpi_db_get_line(input_buffer);
+	command_index = acpi_db_match_command(acpi_gbl_db_args[0]);
+	temp = 0;
+
+	/*
+	 * We don't want to add the !! command to the history buffer. It
+	 * would cause an infinite loop because it would always be the
+	 * previous command.
+	 */
+	if (command_index != CMD_HISTORY_LAST) {
+		acpi_db_add_to_history(input_buffer);
+	}
+
+	/* Verify that we have the minimum number of params */
+
+	if (param_count < acpi_gbl_db_commands[command_index].min_args) {
+		acpi_os_printf
+		    ("%u parameters entered, [%s] requires %u parameters\n",
+		     param_count, acpi_gbl_db_commands[command_index].name,
+		     acpi_gbl_db_commands[command_index].min_args);
+
+		acpi_db_display_command_info(acpi_gbl_db_commands
+					     [command_index].name, FALSE);
+		return (AE_CTRL_TRUE);
+	}
+
+	/* Decode and dispatch the command */
+
+	switch (command_index) {
+	case CMD_NULL:
+
+		if (op) {
+			return (AE_OK);
+		}
+		break;
+
+	case CMD_ALLOCATIONS:
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+		acpi_ut_dump_allocations((u32)-1, NULL);
+#endif
+		break;
+
+	case CMD_ARGS:
+	case CMD_ARGUMENTS:
+
+		acpi_db_display_arguments();
+		break;
+
+	case CMD_BREAKPOINT:
+
+		acpi_db_set_method_breakpoint(acpi_gbl_db_args[1], walk_state,
+					      op);
+		break;
+
+	case CMD_BUSINFO:
+
+		acpi_db_get_bus_info();
+		break;
+
+	case CMD_CALL:
+
+		acpi_db_set_method_call_breakpoint(op);
+		status = AE_OK;
+		break;
+
+	case CMD_DEBUG:
+
+		acpi_db_execute(acpi_gbl_db_args[1],
+				&acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],
+				EX_SINGLE_STEP);
+		break;
+
+	case CMD_DISASSEMBLE:
+	case CMD_DISASM:
+
+		(void)acpi_db_disassemble_method(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_DUMP:
+
+		acpi_db_decode_and_display_object(acpi_gbl_db_args[1],
+						  acpi_gbl_db_args[2]);
+		break;
+
+	case CMD_EVALUATE:
+	case CMD_EXECUTE:
+
+		acpi_db_execute(acpi_gbl_db_args[1],
+				&acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],
+				EX_NO_SINGLE_STEP);
+		break;
+
+	case CMD_FIND:
+
+		status = acpi_db_find_name_in_namespace(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_GO:
+
+		acpi_gbl_cm_single_step = FALSE;
+		return (AE_OK);
+
+	case CMD_HANDLERS:
+
+		acpi_db_display_handlers();
+		break;
+
+	case CMD_HELP:
+	case CMD_HELP2:
+
+		acpi_db_display_help(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_HISTORY:
+
+		acpi_db_display_history();
+		break;
+
+	case CMD_HISTORY_EXE:	/* ! command */
+
+		command_line = acpi_db_get_from_history(acpi_gbl_db_args[1]);
+		if (!command_line) {
+			return (AE_CTRL_TRUE);
+		}
+
+		status = acpi_db_command_dispatch(command_line, walk_state, op);
+		return (status);
+
+	case CMD_HISTORY_LAST:	/* !! command */
+
+		command_line = acpi_db_get_from_history(NULL);
+		if (!command_line) {
+			return (AE_CTRL_TRUE);
+		}
+
+		status = acpi_db_command_dispatch(command_line, walk_state, op);
+		return (status);
+
+	case CMD_INFORMATION:
+
+		acpi_db_display_method_info(op);
+		break;
+
+	case CMD_INTEGRITY:
+
+		acpi_db_check_integrity();
+		break;
+
+	case CMD_INTO:
+
+		if (op) {
+			acpi_gbl_cm_single_step = TRUE;
+			return (AE_OK);
+		}
+		break;
+
+	case CMD_LEVEL:
+
+		if (param_count == 0) {
+			acpi_os_printf
+			    ("Current debug level for file output is:    %8.8lX\n",
+			     acpi_gbl_db_debug_level);
+			acpi_os_printf
+			    ("Current debug level for console output is: %8.8lX\n",
+			     acpi_gbl_db_console_debug_level);
+		} else if (param_count == 2) {
+			temp = acpi_gbl_db_console_debug_level;
+			acpi_gbl_db_console_debug_level =
+			    strtoul(acpi_gbl_db_args[1], NULL, 16);
+			acpi_os_printf
+			    ("Debug Level for console output was %8.8lX, now %8.8lX\n",
+			     temp, acpi_gbl_db_console_debug_level);
+		} else {
+			temp = acpi_gbl_db_debug_level;
+			acpi_gbl_db_debug_level =
+			    strtoul(acpi_gbl_db_args[1], NULL, 16);
+			acpi_os_printf
+			    ("Debug Level for file output was %8.8lX, now %8.8lX\n",
+			     temp, acpi_gbl_db_debug_level);
+		}
+		break;
+
+	case CMD_LIST:
+
+		acpi_db_disassemble_aml(acpi_gbl_db_args[1], op);
+		break;
+
+	case CMD_LOCKS:
+
+		acpi_db_display_locks();
+		break;
+
+	case CMD_LOCALS:
+
+		acpi_db_display_locals();
+		break;
+
+	case CMD_METHODS:
+
+		status = acpi_db_display_objects("METHOD", acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_NAMESPACE:
+
+		acpi_db_dump_namespace(acpi_gbl_db_args[1],
+				       acpi_gbl_db_args[2]);
+		break;
+
+	case CMD_NOTIFY:
+
+		temp = strtoul(acpi_gbl_db_args[2], NULL, 0);
+		acpi_db_send_notify(acpi_gbl_db_args[1], temp);
+		break;
+
+	case CMD_OBJECTS:
+
+		acpi_ut_strupr(acpi_gbl_db_args[1]);
+		status =
+		    acpi_db_display_objects(acpi_gbl_db_args[1],
+					    acpi_gbl_db_args[2]);
+		break;
+
+	case CMD_OSI:
+
+		acpi_db_display_interfaces(acpi_gbl_db_args[1],
+					   acpi_gbl_db_args[2]);
+		break;
+
+	case CMD_OWNER:
+
+		acpi_db_dump_namespace_by_owner(acpi_gbl_db_args[1],
+						acpi_gbl_db_args[2]);
+		break;
+
+	case CMD_PATHS:
+
+		acpi_db_dump_namespace_paths();
+		break;
+
+	case CMD_PREFIX:
+
+		acpi_db_set_scope(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_REFERENCES:
+
+		acpi_db_find_references(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_RESOURCES:
+
+		acpi_db_display_resources(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_RESULTS:
+
+		acpi_db_display_results();
+		break;
+
+	case CMD_SET:
+
+		acpi_db_set_method_data(acpi_gbl_db_args[1],
+					acpi_gbl_db_args[2],
+					acpi_gbl_db_args[3]);
+		break;
+
+	case CMD_STATS:
+
+		status = acpi_db_display_statistics(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_STOP:
+
+		return (AE_NOT_IMPLEMENTED);
+
+	case CMD_TABLES:
+
+		acpi_db_display_table_info(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_TEMPLATE:
+
+		acpi_db_display_template(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_TRACE:
+
+		acpi_db_trace(acpi_gbl_db_args[1], acpi_gbl_db_args[2],
+			      acpi_gbl_db_args[3]);
+		break;
+
+	case CMD_TREE:
+
+		acpi_db_display_calling_tree();
+		break;
+
+	case CMD_TYPE:
+
+		acpi_db_display_object_type(acpi_gbl_db_args[1]);
+		break;
+
+#ifdef ACPI_APPLICATION
+
+		/* Hardware simulation commands. */
+
+	case CMD_ENABLEACPI:
+#if (!ACPI_REDUCED_HARDWARE)
+
+		status = acpi_enable();
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("AcpiEnable failed (Status=%X)\n",
+				       status);
+			return (status);
+		}
+#endif				/* !ACPI_REDUCED_HARDWARE */
+		break;
+
+	case CMD_EVENT:
+
+		acpi_os_printf("Event command not implemented\n");
+		break;
+
+	case CMD_GPE:
+
+		acpi_db_generate_gpe(acpi_gbl_db_args[1], acpi_gbl_db_args[2]);
+		break;
+
+	case CMD_GPES:
+
+		acpi_db_display_gpes();
+		break;
+
+	case CMD_SCI:
+
+		acpi_db_generate_sci();
+		break;
+
+	case CMD_SLEEP:
+
+		status = acpi_db_sleep(acpi_gbl_db_args[1]);
+		break;
+
+		/* File I/O commands. */
+
+	case CMD_CLOSE:
+
+		acpi_db_close_debug_file();
+		break;
+
+	case CMD_LOAD:
+
+		status =
+		    acpi_db_get_table_from_file(acpi_gbl_db_args[1], NULL,
+						FALSE);
+		break;
+
+	case CMD_OPEN:
+
+		acpi_db_open_debug_file(acpi_gbl_db_args[1]);
+		break;
+
+		/* User space commands. */
+
+	case CMD_TERMINATE:
+
+		acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
+		acpi_ut_subsystem_shutdown();
+
+		/*
+		 * TBD: [Restructure] Need some way to re-initialize without
+		 * re-creating the semaphores!
+		 */
+
+		acpi_gbl_db_terminate_loop = TRUE;
+		/*  acpi_initialize (NULL); */
+		break;
+
+	case CMD_THREADS:
+
+		acpi_db_create_execution_threads(acpi_gbl_db_args[1],
+						 acpi_gbl_db_args[2],
+						 acpi_gbl_db_args[3]);
+		break;
+
+		/* Debug test commands. */
+
+	case CMD_PREDEFINED:
+
+		acpi_db_check_predefined_names();
+		break;
+
+	case CMD_TEST:
+
+		acpi_db_execute_test(acpi_gbl_db_args[1]);
+		break;
+
+	case CMD_UNLOAD:
+
+		acpi_db_unload_acpi_table(acpi_gbl_db_args[1]);
+		break;
+#endif
+
+	case CMD_EXIT:
+	case CMD_QUIT:
+
+		if (op) {
+			acpi_os_printf("Method execution terminated\n");
+			return (AE_CTRL_TERMINATE);
+		}
+
+		if (!acpi_gbl_db_output_to_file) {
+			acpi_dbg_level = ACPI_DEBUG_DEFAULT;
+		}
+#ifdef ACPI_APPLICATION
+		acpi_db_close_debug_file();
+#endif
+		acpi_gbl_db_terminate_loop = TRUE;
+		return (AE_CTRL_TERMINATE);
+
+	case CMD_NOT_FOUND:
+	default:
+
+		acpi_os_printf("%s: unknown command\n", acpi_gbl_db_args[0]);
+		return (AE_CTRL_TRUE);
+	}
+
+	if (ACPI_SUCCESS(status)) {
+		status = AE_CTRL_TRUE;
+	}
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_execute_thread
+ *
+ * PARAMETERS:  context         - Not used
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Debugger execute thread. Waits for a command line, then
+ *              simply dispatches it.
+ *
+ ******************************************************************************/
+
+void ACPI_SYSTEM_XFACE acpi_db_execute_thread(void *context)
+{
+	acpi_status status = AE_OK;
+	acpi_status Mstatus;
+
+	while (status != AE_CTRL_TERMINATE && !acpi_gbl_db_terminate_loop) {
+		acpi_gbl_method_executing = FALSE;
+		acpi_gbl_step_to_next_call = FALSE;
+
+		Mstatus = acpi_os_acquire_mutex(acpi_gbl_db_command_ready,
+						ACPI_WAIT_FOREVER);
+		if (ACPI_FAILURE(Mstatus)) {
+			return;
+		}
+
+		status =
+		    acpi_db_command_dispatch(acpi_gbl_db_line_buf, NULL, NULL);
+
+		acpi_os_release_mutex(acpi_gbl_db_command_complete);
+	}
+	acpi_gbl_db_threads_terminated = TRUE;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_single_thread
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Debugger execute thread. Waits for a command line, then
+ *              simply dispatches it.
+ *
+ ******************************************************************************/
+
+static void acpi_db_single_thread(void)
+{
+
+	acpi_gbl_method_executing = FALSE;
+	acpi_gbl_step_to_next_call = FALSE;
+
+	(void)acpi_db_command_dispatch(acpi_gbl_db_line_buf, NULL, NULL);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_user_commands
+ *
+ * PARAMETERS:  prompt              - User prompt (depends on mode)
+ *              op                  - Current executing parse op
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Command line execution for the AML debugger. Commands are
+ *              matched and dispatched here.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_user_commands(char prompt, union acpi_parse_object *op)
+{
+	acpi_status status = AE_OK;
+
+	acpi_os_printf("\n");
+
+	/* TBD: [Restructure] Need a separate command line buffer for step mode */
+
+	while (!acpi_gbl_db_terminate_loop) {
+
+		/* Force output to console until a command is entered */
+
+		acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+
+		/* Different prompt if method is executing */
+
+		if (!acpi_gbl_method_executing) {
+			acpi_os_printf("%1c ", ACPI_DEBUGGER_COMMAND_PROMPT);
+		} else {
+			acpi_os_printf("%1c ", ACPI_DEBUGGER_EXECUTE_PROMPT);
+		}
+
+		/* Get the user input line */
+
+		status = acpi_os_get_line(acpi_gbl_db_line_buf,
+					  ACPI_DB_LINE_BUFFER_SIZE, NULL);
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status,
+					"While parsing command line"));
+			return (status);
+		}
+
+		/* Check for single or multithreaded debug */
+
+		if (acpi_gbl_debugger_configuration & DEBUGGER_MULTI_THREADED) {
+			/*
+			 * Signal the debug thread that we have a command to execute,
+			 * and wait for the command to complete.
+			 */
+			acpi_os_release_mutex(acpi_gbl_db_command_ready);
+			if (ACPI_FAILURE(status)) {
+				return (status);
+			}
+
+			status =
+			    acpi_os_acquire_mutex(acpi_gbl_db_command_complete,
+						  ACPI_WAIT_FOREVER);
+			if (ACPI_FAILURE(status)) {
+				return (status);
+			}
+		} else {
+			/* Just call to the command line interpreter */
+
+			acpi_db_single_thread();
+		}
+	}
+
+	return (status);
+}
diff --git a/drivers/acpi/acpica/dbmethod.c b/drivers/acpi/acpica/dbmethod.c
new file mode 100644
index 000000000000..01e5a71147fd
--- /dev/null
+++ b/drivers/acpi/acpica/dbmethod.c
@@ -0,0 +1,369 @@
+/*******************************************************************************
+ *
+ * Module Name: dbmethod - Debug commands for control methods
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#include "acdebug.h"
+#include "acparser.h"
+#include "acpredef.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbmethod")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_set_method_breakpoint
+ *
+ * PARAMETERS:  location            - AML offset of breakpoint
+ *              walk_state          - Current walk info
+ *              op                  - Current Op (from parse walk)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Set a breakpoint in a control method at the specified
+ *              AML offset
+ *
+ ******************************************************************************/
+void
+acpi_db_set_method_breakpoint(char *location,
+			      struct acpi_walk_state *walk_state,
+			      union acpi_parse_object *op)
+{
+	u32 address;
+	u32 aml_offset;
+
+	if (!op) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	/* Get and verify the breakpoint address */
+
+	address = strtoul(location, NULL, 16);
+	aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml,
+					walk_state->parser_state.aml_start);
+	if (address <= aml_offset) {
+		acpi_os_printf("Breakpoint %X is beyond current address %X\n",
+			       address, aml_offset);
+	}
+
+	/* Save breakpoint in current walk */
+
+	walk_state->user_breakpoint = address;
+	acpi_os_printf("Breakpoint set at AML offset %X\n", address);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_set_method_call_breakpoint
+ *
+ * PARAMETERS:  op                  - Current Op (from parse walk)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Set a breakpoint in a control method at the specified
+ *              AML offset
+ *
+ ******************************************************************************/
+
+void acpi_db_set_method_call_breakpoint(union acpi_parse_object *op)
+{
+
+	if (!op) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	acpi_gbl_step_to_next_call = TRUE;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_set_method_data
+ *
+ * PARAMETERS:  type_arg        - L for local, A for argument
+ *              index_arg       - which one
+ *              value_arg       - Value to set.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Set a local or argument for the running control method.
+ *              NOTE: only object supported is Number.
+ *
+ ******************************************************************************/
+
+void acpi_db_set_method_data(char *type_arg, char *index_arg, char *value_arg)
+{
+	char type;
+	u32 index;
+	u32 value;
+	struct acpi_walk_state *walk_state;
+	union acpi_operand_object *obj_desc;
+	acpi_status status;
+	struct acpi_namespace_node *node;
+
+	/* Validate type_arg */
+
+	acpi_ut_strupr(type_arg);
+	type = type_arg[0];
+	if ((type != 'L') && (type != 'A') && (type != 'N')) {
+		acpi_os_printf("Invalid SET operand: %s\n", type_arg);
+		return;
+	}
+
+	value = strtoul(value_arg, NULL, 16);
+
+	if (type == 'N') {
+		node = acpi_db_convert_to_node(index_arg);
+		if (!node) {
+			return;
+		}
+
+		if (node->type != ACPI_TYPE_INTEGER) {
+			acpi_os_printf("Can only set Integer nodes\n");
+			return;
+		}
+		obj_desc = node->object;
+		obj_desc->integer.value = value;
+		return;
+	}
+
+	/* Get the index and value */
+
+	index = strtoul(index_arg, NULL, 16);
+
+	walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
+	if (!walk_state) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	/* Create and initialize the new object */
+
+	obj_desc = acpi_ut_create_integer_object((u64)value);
+	if (!obj_desc) {
+		acpi_os_printf("Could not create an internal object\n");
+		return;
+	}
+
+	/* Store the new object into the target */
+
+	switch (type) {
+	case 'A':
+
+		/* Set a method argument */
+
+		if (index > ACPI_METHOD_MAX_ARG) {
+			acpi_os_printf("Arg%u - Invalid argument name\n",
+				       index);
+			goto cleanup;
+		}
+
+		status = acpi_ds_store_object_to_local(ACPI_REFCLASS_ARG,
+						       index, obj_desc,
+						       walk_state);
+		if (ACPI_FAILURE(status)) {
+			goto cleanup;
+		}
+
+		obj_desc = walk_state->arguments[index].object;
+
+		acpi_os_printf("Arg%u: ", index);
+		acpi_db_display_internal_object(obj_desc, walk_state);
+		break;
+
+	case 'L':
+
+		/* Set a method local */
+
+		if (index > ACPI_METHOD_MAX_LOCAL) {
+			acpi_os_printf
+			    ("Local%u - Invalid local variable name\n", index);
+			goto cleanup;
+		}
+
+		status = acpi_ds_store_object_to_local(ACPI_REFCLASS_LOCAL,
+						       index, obj_desc,
+						       walk_state);
+		if (ACPI_FAILURE(status)) {
+			goto cleanup;
+		}
+
+		obj_desc = walk_state->local_variables[index].object;
+
+		acpi_os_printf("Local%u: ", index);
+		acpi_db_display_internal_object(obj_desc, walk_state);
+		break;
+
+	default:
+
+		break;
+	}
+
+cleanup:
+	acpi_ut_remove_reference(obj_desc);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_disassemble_aml
+ *
+ * PARAMETERS:  statements          - Number of statements to disassemble
+ *              op                  - Current Op (from parse walk)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
+ *              of statements specified.
+ *
+ ******************************************************************************/
+
+void acpi_db_disassemble_aml(char *statements, union acpi_parse_object *op)
+{
+	u32 num_statements = 8;
+
+	if (!op) {
+		acpi_os_printf("There is no method currently executing\n");
+		return;
+	}
+
+	if (statements) {
+		num_statements = strtoul(statements, NULL, 0);
+	}
+#ifdef ACPI_DISASSEMBLER
+	acpi_dm_disassemble(NULL, op, num_statements);
+#endif
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_disassemble_method
+ *
+ * PARAMETERS:  name            - Name of control method
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
+ *              of statements specified.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_disassemble_method(char *name)
+{
+	acpi_status status;
+	union acpi_parse_object *op;
+	struct acpi_walk_state *walk_state;
+	union acpi_operand_object *obj_desc;
+	struct acpi_namespace_node *method;
+
+	method = acpi_db_convert_to_node(name);
+	if (!method) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	if (method->type != ACPI_TYPE_METHOD) {
+		ACPI_ERROR((AE_INFO, "%s (%s): Object must be a control method",
+			    name, acpi_ut_get_type_name(method->type)));
+		return (AE_BAD_PARAMETER);
+	}
+
+	obj_desc = method->object;
+
+	op = acpi_ps_create_scope_op(obj_desc->method.aml_start);
+	if (!op) {
+		return (AE_NO_MEMORY);
+	}
+
+	/* Create and initialize a new walk state */
+
+	walk_state = acpi_ds_create_walk_state(0, op, NULL, NULL);
+	if (!walk_state) {
+		return (AE_NO_MEMORY);
+	}
+
+	status = acpi_ds_init_aml_walk(walk_state, op, NULL,
+				       obj_desc->method.aml_start,
+				       obj_desc->method.aml_length, NULL,
+				       ACPI_IMODE_LOAD_PASS1);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
+	walk_state->owner_id = obj_desc->method.owner_id;
+
+	/* Push start scope on scope stack and make it current */
+
+	status = acpi_ds_scope_stack_push(method, method->type, walk_state);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	/* Parse the entire method AML including deferred operators */
+
+	walk_state->parse_flags &= ~ACPI_PARSE_DELETE_TREE;
+	walk_state->parse_flags |= ACPI_PARSE_DISASSEMBLE;
+
+	status = acpi_ps_parse_aml(walk_state);
+
+#ifdef ACPI_DISASSEMBLER
+	(void)acpi_dm_parse_deferred_ops(op);
+
+	/* Now we can disassemble the method */
+
+	acpi_gbl_dm_opt_verbose = FALSE;
+	acpi_dm_disassemble(NULL, op, 0);
+	acpi_gbl_dm_opt_verbose = TRUE;
+#endif
+
+	acpi_ps_delete_parse_tree(op);
+
+	/* Method cleanup */
+
+	acpi_ns_delete_namespace_subtree(method);
+	acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);
+	acpi_ut_release_owner_id(&obj_desc->method.owner_id);
+	return (AE_OK);
+}
diff --git a/drivers/acpi/acpica/dbnames.c b/drivers/acpi/acpica/dbnames.c
new file mode 100644
index 000000000000..04ff1ebfda58
--- /dev/null
+++ b/drivers/acpi/acpica/dbnames.c
@@ -0,0 +1,947 @@
+/*******************************************************************************
+ *
+ * Module Name: dbnames - Debugger commands for the acpi namespace
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acdebug.h"
+#include "acpredef.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbnames")
+
+/* Local prototypes */
+static acpi_status
+acpi_db_walk_and_match_name(acpi_handle obj_handle,
+			    u32 nesting_level,
+			    void *context, void **return_value);
+
+static acpi_status
+acpi_db_walk_for_predefined_names(acpi_handle obj_handle,
+				  u32 nesting_level,
+				  void *context, void **return_value);
+
+static acpi_status
+acpi_db_walk_for_specific_objects(acpi_handle obj_handle,
+				  u32 nesting_level,
+				  void *context, void **return_value);
+
+static acpi_status
+acpi_db_walk_for_object_counts(acpi_handle obj_handle,
+			       u32 nesting_level,
+			       void *context, void **return_value);
+
+static acpi_status
+acpi_db_integrity_walk(acpi_handle obj_handle,
+		       u32 nesting_level, void *context, void **return_value);
+
+static acpi_status
+acpi_db_walk_for_references(acpi_handle obj_handle,
+			    u32 nesting_level,
+			    void *context, void **return_value);
+
+static acpi_status
+acpi_db_bus_walk(acpi_handle obj_handle,
+		 u32 nesting_level, void *context, void **return_value);
+
+/*
+ * Arguments for the Objects command
+ * These object types map directly to the ACPI_TYPES
+ */
+static struct acpi_db_argument_info acpi_db_object_types[] = {
+	{"ANY"},
+	{"INTEGERS"},
+	{"STRINGS"},
+	{"BUFFERS"},
+	{"PACKAGES"},
+	{"FIELDS"},
+	{"DEVICES"},
+	{"EVENTS"},
+	{"METHODS"},
+	{"MUTEXES"},
+	{"REGIONS"},
+	{"POWERRESOURCES"},
+	{"PROCESSORS"},
+	{"THERMALZONES"},
+	{"BUFFERFIELDS"},
+	{"DDBHANDLES"},
+	{"DEBUG"},
+	{"REGIONFIELDS"},
+	{"BANKFIELDS"},
+	{"INDEXFIELDS"},
+	{"REFERENCES"},
+	{"ALIASES"},
+	{"METHODALIASES"},
+	{"NOTIFY"},
+	{"ADDRESSHANDLER"},
+	{"RESOURCE"},
+	{"RESOURCEFIELD"},
+	{"SCOPES"},
+	{NULL}			/* Must be null terminated */
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_set_scope
+ *
+ * PARAMETERS:  name                - New scope path
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Set the "current scope" as maintained by this utility.
+ *              The scope is used as a prefix to ACPI paths.
+ *
+ ******************************************************************************/
+
+void acpi_db_set_scope(char *name)
+{
+	acpi_status status;
+	struct acpi_namespace_node *node;
+
+	if (!name || name[0] == 0) {
+		acpi_os_printf("Current scope: %s\n", acpi_gbl_db_scope_buf);
+		return;
+	}
+
+	acpi_db_prep_namestring(name);
+
+	if (ACPI_IS_ROOT_PREFIX(name[0])) {
+
+		/* Validate new scope from the root */
+
+		status = acpi_ns_get_node(acpi_gbl_root_node, name,
+					  ACPI_NS_NO_UPSEARCH, &node);
+		if (ACPI_FAILURE(status)) {
+			goto error_exit;
+		}
+
+		acpi_gbl_db_scope_buf[0] = 0;
+	} else {
+		/* Validate new scope relative to old scope */
+
+		status = acpi_ns_get_node(acpi_gbl_db_scope_node, name,
+					  ACPI_NS_NO_UPSEARCH, &node);
+		if (ACPI_FAILURE(status)) {
+			goto error_exit;
+		}
+	}
+
+	/* Build the final pathname */
+
+	if (acpi_ut_safe_strcat
+	    (acpi_gbl_db_scope_buf, sizeof(acpi_gbl_db_scope_buf), name)) {
+		status = AE_BUFFER_OVERFLOW;
+		goto error_exit;
+	}
+
+	if (acpi_ut_safe_strcat
+	    (acpi_gbl_db_scope_buf, sizeof(acpi_gbl_db_scope_buf), "\\")) {
+		status = AE_BUFFER_OVERFLOW;
+		goto error_exit;
+	}
+
+	acpi_gbl_db_scope_node = node;
+	acpi_os_printf("New scope: %s\n", acpi_gbl_db_scope_buf);
+	return;
+
+error_exit:
+
+	acpi_os_printf("Could not attach scope: %s, %s\n",
+		       name, acpi_format_exception(status));
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_dump_namespace
+ *
+ * PARAMETERS:  start_arg       - Node to begin namespace dump
+ *              depth_arg       - Maximum tree depth to be dumped
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Dump entire namespace or a subtree. Each node is displayed
+ *              with type and other information.
+ *
+ ******************************************************************************/
+
+void acpi_db_dump_namespace(char *start_arg, char *depth_arg)
+{
+	acpi_handle subtree_entry = acpi_gbl_root_node;
+	u32 max_depth = ACPI_UINT32_MAX;
+
+	/* No argument given, just start at the root and dump entire namespace */
+
+	if (start_arg) {
+		subtree_entry = acpi_db_convert_to_node(start_arg);
+		if (!subtree_entry) {
+			return;
+		}
+
+		/* Now we can check for the depth argument */
+
+		if (depth_arg) {
+			max_depth = strtoul(depth_arg, NULL, 0);
+		}
+	}
+
+	acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
+	acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
+		       ((struct acpi_namespace_node *)subtree_entry)->name.
+		       ascii, subtree_entry);
+
+	/* Display the subtree */
+
+	acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
+	acpi_ns_dump_objects(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY, max_depth,
+			     ACPI_OWNER_ID_MAX, subtree_entry);
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_dump_namespace_paths
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Dump entire namespace with full object pathnames and object
+ *              type information. Alternative to "namespace" command.
+ *
+ ******************************************************************************/
+
+void acpi_db_dump_namespace_paths(void)
+{
+
+	acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
+	acpi_os_printf("ACPI Namespace (from root):\n");
+
+	/* Display the entire namespace */
+
+	acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
+	acpi_ns_dump_object_paths(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY,
+				  ACPI_UINT32_MAX, ACPI_OWNER_ID_MAX,
+				  acpi_gbl_root_node);
+
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_dump_namespace_by_owner
+ *
+ * PARAMETERS:  owner_arg       - Owner ID whose nodes will be displayed
+ *              depth_arg       - Maximum tree depth to be dumped
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Dump elements of the namespace that are owned by the owner_id.
+ *
+ ******************************************************************************/
+
+void acpi_db_dump_namespace_by_owner(char *owner_arg, char *depth_arg)
+{
+	acpi_handle subtree_entry = acpi_gbl_root_node;
+	u32 max_depth = ACPI_UINT32_MAX;
+	acpi_owner_id owner_id;
+
+	owner_id = (acpi_owner_id) strtoul(owner_arg, NULL, 0);
+
+	/* Now we can check for the depth argument */
+
+	if (depth_arg) {
+		max_depth = strtoul(depth_arg, NULL, 0);
+	}
+
+	acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
+	acpi_os_printf("ACPI Namespace by owner %X:\n", owner_id);
+
+	/* Display the subtree */
+
+	acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
+	acpi_ns_dump_objects(ACPI_TYPE_ANY, ACPI_DISPLAY_SUMMARY, max_depth,
+			     owner_id, subtree_entry);
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_walk_and_match_name
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Find a particular name/names within the namespace. Wildcards
+ *              are supported -- '?' matches any character.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_and_match_name(acpi_handle obj_handle,
+			    u32 nesting_level,
+			    void *context, void **return_value)
+{
+	acpi_status status;
+	char *requested_name = (char *)context;
+	u32 i;
+	struct acpi_buffer buffer;
+	struct acpi_walk_info info;
+
+	/* Check for a name match */
+
+	for (i = 0; i < 4; i++) {
+
+		/* Wildcard support */
+
+		if ((requested_name[i] != '?') &&
+		    (requested_name[i] != ((struct acpi_namespace_node *)
+					   obj_handle)->name.ascii[i])) {
+
+			/* No match, just exit */
+
+			return (AE_OK);
+		}
+	}
+
+	/* Get the full pathname to this object */
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could Not get pathname for object %p\n",
+			       obj_handle);
+	} else {
+		info.owner_id = ACPI_OWNER_ID_MAX;
+		info.debug_level = ACPI_UINT32_MAX;
+		info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
+
+		acpi_os_printf("%32s", (char *)buffer.pointer);
+		(void)acpi_ns_dump_one_object(obj_handle, nesting_level, &info,
+					      NULL);
+		ACPI_FREE(buffer.pointer);
+	}
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_find_name_in_namespace
+ *
+ * PARAMETERS:  name_arg        - The 4-character ACPI name to find.
+ *                                wildcards are supported.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Search the namespace for a given name (with wildcards)
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_find_name_in_namespace(char *name_arg)
+{
+	char acpi_name[5] = "____";
+	char *acpi_name_ptr = acpi_name;
+
+	if (strlen(name_arg) > ACPI_NAME_SIZE) {
+		acpi_os_printf("Name must be no longer than 4 characters\n");
+		return (AE_OK);
+	}
+
+	/* Pad out name with underscores as necessary to create a 4-char name */
+
+	acpi_ut_strupr(name_arg);
+	while (*name_arg) {
+		*acpi_name_ptr = *name_arg;
+		acpi_name_ptr++;
+		name_arg++;
+	}
+
+	/* Walk the namespace from the root */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX, acpi_db_walk_and_match_name,
+				  NULL, acpi_name, NULL);
+
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_walk_for_predefined_names
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Detect and display predefined ACPI names (names that start with
+ *              an underscore)
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_predefined_names(acpi_handle obj_handle,
+				  u32 nesting_level,
+				  void *context, void **return_value)
+{
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+	u32 *count = (u32 *)context;
+	const union acpi_predefined_info *predefined;
+	const union acpi_predefined_info *package = NULL;
+	char *pathname;
+	char string_buffer[48];
+
+	predefined = acpi_ut_match_predefined_method(node->name.ascii);
+	if (!predefined) {
+		return (AE_OK);
+	}
+
+	pathname = acpi_ns_get_external_pathname(node);
+	if (!pathname) {
+		return (AE_OK);
+	}
+
+	/* If method returns a package, the info is in the next table entry */
+
+	if (predefined->info.expected_btypes & ACPI_RTYPE_PACKAGE) {
+		package = predefined + 1;
+	}
+
+	acpi_ut_get_expected_return_types(string_buffer,
+					  predefined->info.expected_btypes);
+
+	acpi_os_printf("%-32s Arguments %X, Return Types: %s", pathname,
+		       METHOD_GET_ARG_COUNT(predefined->info.argument_list),
+		       string_buffer);
+
+	if (package) {
+		acpi_os_printf(" (PkgType %2.2X, ObjType %2.2X, Count %2.2X)",
+			       package->ret_info.type,
+			       package->ret_info.object_type1,
+			       package->ret_info.count1);
+	}
+
+	acpi_os_printf("\n");
+
+	/* Check that the declared argument count matches the ACPI spec */
+
+	acpi_ns_check_acpi_compliance(pathname, node, predefined);
+
+	ACPI_FREE(pathname);
+	(*count)++;
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_check_predefined_names
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Validate all predefined names in the namespace
+ *
+ ******************************************************************************/
+
+void acpi_db_check_predefined_names(void)
+{
+	u32 count = 0;
+
+	/* Search all nodes in namespace */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX,
+				  acpi_db_walk_for_predefined_names, NULL,
+				  (void *)&count, NULL);
+
+	acpi_os_printf("Found %u predefined names in the namespace\n", count);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_walk_for_object_counts
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Display short info about objects in the namespace
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_object_counts(acpi_handle obj_handle,
+			       u32 nesting_level,
+			       void *context, void **return_value)
+{
+	struct acpi_object_info *info = (struct acpi_object_info *)context;
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+
+	if (node->type > ACPI_TYPE_NS_NODE_MAX) {
+		acpi_os_printf("[%4.4s]: Unknown object type %X\n",
+			       node->name.ascii, node->type);
+	} else {
+		info->types[node->type]++;
+	}
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_walk_for_specific_objects
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Display short info about objects in the namespace
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_specific_objects(acpi_handle obj_handle,
+				  u32 nesting_level,
+				  void *context, void **return_value)
+{
+	struct acpi_walk_info *info = (struct acpi_walk_info *)context;
+	struct acpi_buffer buffer;
+	acpi_status status;
+
+	info->count++;
+
+	/* Get and display the full pathname to this object */
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could Not get pathname for object %p\n",
+			       obj_handle);
+		return (AE_OK);
+	}
+
+	acpi_os_printf("%32s", (char *)buffer.pointer);
+	ACPI_FREE(buffer.pointer);
+
+	/* Dump short info about the object */
+
+	(void)acpi_ns_dump_one_object(obj_handle, nesting_level, info, NULL);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_objects
+ *
+ * PARAMETERS:  obj_type_arg        - Type of object to display
+ *              display_count_arg   - Max depth to display
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display objects in the namespace of the requested type
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_display_objects(char *obj_type_arg, char *display_count_arg)
+{
+	struct acpi_walk_info info;
+	acpi_object_type type;
+	struct acpi_object_info *object_info;
+	u32 i;
+	u32 total_objects = 0;
+
+	/* No argument means display summary/count of all object types */
+
+	if (!obj_type_arg) {
+		object_info =
+		    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_object_info));
+
+		/* Walk the namespace from the root */
+
+		(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+					  ACPI_UINT32_MAX,
+					  acpi_db_walk_for_object_counts, NULL,
+					  (void *)object_info, NULL);
+
+		acpi_os_printf("\nSummary of namespace objects:\n\n");
+
+		for (i = 0; i < ACPI_TOTAL_TYPES; i++) {
+			acpi_os_printf("%8u %s\n", object_info->types[i],
+				       acpi_ut_get_type_name(i));
+
+			total_objects += object_info->types[i];
+		}
+
+		acpi_os_printf("\n%8u Total namespace objects\n\n",
+			       total_objects);
+
+		ACPI_FREE(object_info);
+		return (AE_OK);
+	}
+
+	/* Get the object type */
+
+	type = acpi_db_match_argument(obj_type_arg, acpi_db_object_types);
+	if (type == ACPI_TYPE_NOT_FOUND) {
+		acpi_os_printf("Invalid or unsupported argument\n");
+		return (AE_OK);
+	}
+
+	acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
+	acpi_os_printf
+	    ("Objects of type [%s] defined in the current ACPI Namespace:\n",
+	     acpi_ut_get_type_name(type));
+
+	acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
+
+	info.count = 0;
+	info.owner_id = ACPI_OWNER_ID_MAX;
+	info.debug_level = ACPI_UINT32_MAX;
+	info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
+
+	/* Walk the namespace from the root */
+
+	(void)acpi_walk_namespace(type, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
+				  acpi_db_walk_for_specific_objects, NULL,
+				  (void *)&info, NULL);
+
+	acpi_os_printf
+	    ("\nFound %u objects of type [%s] in the current ACPI Namespace\n",
+	     info.count, acpi_ut_get_type_name(type));
+
+	acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_integrity_walk
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Examine one NS node for valid values.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_integrity_walk(acpi_handle obj_handle,
+		       u32 nesting_level, void *context, void **return_value)
+{
+	struct acpi_integrity_info *info =
+	    (struct acpi_integrity_info *)context;
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+	union acpi_operand_object *object;
+	u8 alias = TRUE;
+
+	info->nodes++;
+
+	/* Verify the NS node, and dereference aliases */
+
+	while (alias) {
+		if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
+			acpi_os_printf
+			    ("Invalid Descriptor Type for Node %p [%s] - "
+			     "is %2.2X should be %2.2X\n", node,
+			     acpi_ut_get_descriptor_name(node),
+			     ACPI_GET_DESCRIPTOR_TYPE(node),
+			     ACPI_DESC_TYPE_NAMED);
+			return (AE_OK);
+		}
+
+		if ((node->type == ACPI_TYPE_LOCAL_ALIAS) ||
+		    (node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
+			node = (struct acpi_namespace_node *)node->object;
+		} else {
+			alias = FALSE;
+		}
+	}
+
+	if (node->type > ACPI_TYPE_LOCAL_MAX) {
+		acpi_os_printf("Invalid Object Type for Node %p, Type = %X\n",
+			       node, node->type);
+		return (AE_OK);
+	}
+
+	if (!acpi_ut_valid_acpi_name(node->name.ascii)) {
+		acpi_os_printf("Invalid AcpiName for Node %p\n", node);
+		return (AE_OK);
+	}
+
+	object = acpi_ns_get_attached_object(node);
+	if (object) {
+		info->objects++;
+		if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) {
+			acpi_os_printf
+			    ("Invalid Descriptor Type for Object %p [%s]\n",
+			     object, acpi_ut_get_descriptor_name(object));
+		}
+	}
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_check_integrity
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Check entire namespace for data structure integrity
+ *
+ ******************************************************************************/
+
+void acpi_db_check_integrity(void)
+{
+	struct acpi_integrity_info info = { 0, 0 };
+
+	/* Search all nodes in namespace */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX, acpi_db_integrity_walk, NULL,
+				  (void *)&info, NULL);
+
+	acpi_os_printf("Verified %u namespace nodes with %u Objects\n",
+		       info.nodes, info.objects);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_walk_for_references
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Check if this namespace object refers to the target object
+ *              that is passed in as the context value.
+ *
+ * Note: Currently doesn't check subobjects within the Node's object
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_references(acpi_handle obj_handle,
+			    u32 nesting_level,
+			    void *context, void **return_value)
+{
+	union acpi_operand_object *obj_desc =
+	    (union acpi_operand_object *)context;
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+
+	/* Check for match against the namespace node itself */
+
+	if (node == (void *)obj_desc) {
+		acpi_os_printf("Object is a Node [%4.4s]\n",
+			       acpi_ut_get_node_name(node));
+	}
+
+	/* Check for match against the object attached to the node */
+
+	if (acpi_ns_get_attached_object(node) == obj_desc) {
+		acpi_os_printf("Reference at Node->Object %p [%4.4s]\n",
+			       node, acpi_ut_get_node_name(node));
+	}
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_find_references
+ *
+ * PARAMETERS:  object_arg      - String with hex value of the object
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Search namespace for all references to the input object
+ *
+ ******************************************************************************/
+
+void acpi_db_find_references(char *object_arg)
+{
+	union acpi_operand_object *obj_desc;
+	acpi_size address;
+
+	/* Convert string to object pointer */
+
+	address = strtoul(object_arg, NULL, 16);
+	obj_desc = ACPI_TO_POINTER(address);
+
+	/* Search all nodes in namespace */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX, acpi_db_walk_for_references,
+				  NULL, (void *)obj_desc, NULL);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_bus_walk
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Display info about device objects that have a corresponding
+ *              _PRT method.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_bus_walk(acpi_handle obj_handle,
+		 u32 nesting_level, void *context, void **return_value)
+{
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+	acpi_status status;
+	struct acpi_buffer buffer;
+	struct acpi_namespace_node *temp_node;
+	struct acpi_device_info *info;
+	u32 i;
+
+	if ((node->type != ACPI_TYPE_DEVICE) &&
+	    (node->type != ACPI_TYPE_PROCESSOR)) {
+		return (AE_OK);
+	}
+
+	/* Exit if there is no _PRT under this device */
+
+	status = acpi_get_handle(node, METHOD_NAME__PRT,
+				 ACPI_CAST_PTR(acpi_handle, &temp_node));
+	if (ACPI_FAILURE(status)) {
+		return (AE_OK);
+	}
+
+	/* Get the full path to this device object */
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could Not get pathname for object %p\n",
+			       obj_handle);
+		return (AE_OK);
+	}
+
+	status = acpi_get_object_info(obj_handle, &info);
+	if (ACPI_FAILURE(status)) {
+		return (AE_OK);
+	}
+
+	/* Display the full path */
+
+	acpi_os_printf("%-32s Type %X", (char *)buffer.pointer, node->type);
+	ACPI_FREE(buffer.pointer);
+
+	if (info->flags & ACPI_PCI_ROOT_BRIDGE) {
+		acpi_os_printf(" - Is PCI Root Bridge");
+	}
+	acpi_os_printf("\n");
+
+	/* _PRT info */
+
+	acpi_os_printf("_PRT: %p\n", temp_node);
+
+	/* Dump _ADR, _HID, _UID, _CID */
+
+	if (info->valid & ACPI_VALID_ADR) {
+		acpi_os_printf("_ADR: %8.8X%8.8X\n",
+			       ACPI_FORMAT_UINT64(info->address));
+	} else {
+		acpi_os_printf("_ADR: <Not Present>\n");
+	}
+
+	if (info->valid & ACPI_VALID_HID) {
+		acpi_os_printf("_HID: %s\n", info->hardware_id.string);
+	} else {
+		acpi_os_printf("_HID: <Not Present>\n");
+	}
+
+	if (info->valid & ACPI_VALID_UID) {
+		acpi_os_printf("_UID: %s\n", info->unique_id.string);
+	} else {
+		acpi_os_printf("_UID: <Not Present>\n");
+	}
+
+	if (info->valid & ACPI_VALID_CID) {
+		for (i = 0; i < info->compatible_id_list.count; i++) {
+			acpi_os_printf("_CID: %s\n",
+				       info->compatible_id_list.ids[i].string);
+		}
+	} else {
+		acpi_os_printf("_CID: <Not Present>\n");
+	}
+
+	ACPI_FREE(info);
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_get_bus_info
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display info about system busses.
+ *
+ ******************************************************************************/
+
+void acpi_db_get_bus_info(void)
+{
+	/* Search all nodes in namespace */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX, acpi_db_bus_walk, NULL, NULL,
+				  NULL);
+}
diff --git a/drivers/acpi/acpica/dbobject.c b/drivers/acpi/acpica/dbobject.c
new file mode 100644
index 000000000000..116f6db8c2ed
--- /dev/null
+++ b/drivers/acpi/acpica/dbobject.c
@@ -0,0 +1,533 @@
+/*******************************************************************************
+ *
+ * Module Name: dbobject - ACPI object decode and display
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acdebug.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbobject")
+
+/* Local prototypes */
+static void acpi_db_decode_node(struct acpi_namespace_node *node);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_dump_method_info
+ *
+ * PARAMETERS:  status          - Method execution status
+ *              walk_state      - Current state of the parse tree walk
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Called when a method has been aborted because of an error.
+ *              Dumps the method execution stack, and the method locals/args,
+ *              and disassembles the AML opcode that failed.
+ *
+ ******************************************************************************/
+
+void
+acpi_db_dump_method_info(acpi_status status, struct acpi_walk_state *walk_state)
+{
+	struct acpi_thread_state *thread;
+
+	/* Ignore control codes, they are not errors */
+
+	if ((status & AE_CODE_MASK) == AE_CODE_CONTROL) {
+		return;
+	}
+
+	/* We may be executing a deferred opcode */
+
+	if (walk_state->deferred_node) {
+		acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
+		return;
+	}
+
+	/*
+	 * If there is no Thread, we are not actually executing a method.
+	 * This can happen when the iASL compiler calls the interpreter
+	 * to perform constant folding.
+	 */
+	thread = walk_state->thread;
+	if (!thread) {
+		return;
+	}
+
+	/* Display the method locals and arguments */
+
+	acpi_os_printf("\n");
+	acpi_db_decode_locals(walk_state);
+	acpi_os_printf("\n");
+	acpi_db_decode_arguments(walk_state);
+	acpi_os_printf("\n");
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_decode_internal_object
+ *
+ * PARAMETERS:  obj_desc        - Object to be displayed
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Short display of an internal object. Numbers/Strings/Buffers.
+ *
+ ******************************************************************************/
+
+void acpi_db_decode_internal_object(union acpi_operand_object *obj_desc)
+{
+	u32 i;
+
+	if (!obj_desc) {
+		acpi_os_printf(" Uninitialized");
+		return;
+	}
+
+	if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) {
+		acpi_os_printf(" %p [%s]", obj_desc,
+			       acpi_ut_get_descriptor_name(obj_desc));
+		return;
+	}
+
+	acpi_os_printf(" %s", acpi_ut_get_object_type_name(obj_desc));
+
+	switch (obj_desc->common.type) {
+	case ACPI_TYPE_INTEGER:
+
+		acpi_os_printf(" %8.8X%8.8X",
+			       ACPI_FORMAT_UINT64(obj_desc->integer.value));
+		break;
+
+	case ACPI_TYPE_STRING:
+
+		acpi_os_printf("(%u) \"%.24s",
+			       obj_desc->string.length,
+			       obj_desc->string.pointer);
+
+		if (obj_desc->string.length > 24) {
+			acpi_os_printf("...");
+		} else {
+			acpi_os_printf("\"");
+		}
+		break;
+
+	case ACPI_TYPE_BUFFER:
+
+		acpi_os_printf("(%u)", obj_desc->buffer.length);
+		for (i = 0; (i < 8) && (i < obj_desc->buffer.length); i++) {
+			acpi_os_printf(" %2.2X", obj_desc->buffer.pointer[i]);
+		}
+		break;
+
+	default:
+
+		acpi_os_printf(" %p", obj_desc);
+		break;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_decode_node
+ *
+ * PARAMETERS:  node        - Object to be displayed
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Short display of a namespace node
+ *
+ ******************************************************************************/
+
+static void acpi_db_decode_node(struct acpi_namespace_node *node)
+{
+
+	acpi_os_printf("<Node>          Name %4.4s",
+		       acpi_ut_get_node_name(node));
+
+	if (node->flags & ANOBJ_METHOD_ARG) {
+		acpi_os_printf(" [Method Arg]");
+	}
+	if (node->flags & ANOBJ_METHOD_LOCAL) {
+		acpi_os_printf(" [Method Local]");
+	}
+
+	switch (node->type) {
+
+		/* These types have no attached object */
+
+	case ACPI_TYPE_DEVICE:
+
+		acpi_os_printf(" Device");
+		break;
+
+	case ACPI_TYPE_THERMAL:
+
+		acpi_os_printf(" Thermal Zone");
+		break;
+
+	default:
+
+		acpi_db_decode_internal_object(acpi_ns_get_attached_object
+					       (node));
+		break;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_internal_object
+ *
+ * PARAMETERS:  obj_desc        - Object to be displayed
+ *              walk_state      - Current walk state
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Short display of an internal object
+ *
+ ******************************************************************************/
+
+void
+acpi_db_display_internal_object(union acpi_operand_object *obj_desc,
+				struct acpi_walk_state *walk_state)
+{
+	u8 type;
+
+	acpi_os_printf("%p ", obj_desc);
+
+	if (!obj_desc) {
+		acpi_os_printf("<Null Object>\n");
+		return;
+	}
+
+	/* Decode the object type */
+
+	switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
+	case ACPI_DESC_TYPE_PARSER:
+
+		acpi_os_printf("<Parser> ");
+		break;
+
+	case ACPI_DESC_TYPE_NAMED:
+
+		acpi_db_decode_node((struct acpi_namespace_node *)obj_desc);
+		break;
+
+	case ACPI_DESC_TYPE_OPERAND:
+
+		type = obj_desc->common.type;
+		if (type > ACPI_TYPE_LOCAL_MAX) {
+			acpi_os_printf(" Type %X [Invalid Type]", (u32)type);
+			return;
+		}
+
+		/* Decode the ACPI object type */
+
+		switch (obj_desc->common.type) {
+		case ACPI_TYPE_LOCAL_REFERENCE:
+
+			acpi_os_printf("[%s] ",
+				       acpi_ut_get_reference_name(obj_desc));
+
+			/* Decode the refererence */
+
+			switch (obj_desc->reference.class) {
+			case ACPI_REFCLASS_LOCAL:
+
+				acpi_os_printf("%X ",
+					       obj_desc->reference.value);
+				if (walk_state) {
+					obj_desc = walk_state->local_variables
+					    [obj_desc->reference.value].object;
+					acpi_os_printf("%p", obj_desc);
+					acpi_db_decode_internal_object
+					    (obj_desc);
+				}
+				break;
+
+			case ACPI_REFCLASS_ARG:
+
+				acpi_os_printf("%X ",
+					       obj_desc->reference.value);
+				if (walk_state) {
+					obj_desc = walk_state->arguments
+					    [obj_desc->reference.value].object;
+					acpi_os_printf("%p", obj_desc);
+					acpi_db_decode_internal_object
+					    (obj_desc);
+				}
+				break;
+
+			case ACPI_REFCLASS_INDEX:
+
+				switch (obj_desc->reference.target_type) {
+				case ACPI_TYPE_BUFFER_FIELD:
+
+					acpi_os_printf("%p",
+						       obj_desc->reference.
+						       object);
+					acpi_db_decode_internal_object
+					    (obj_desc->reference.object);
+					break;
+
+				case ACPI_TYPE_PACKAGE:
+
+					acpi_os_printf("%p",
+						       obj_desc->reference.
+						       where);
+					if (!obj_desc->reference.where) {
+						acpi_os_printf
+						    (" Uninitialized WHERE pointer");
+					} else {
+						acpi_db_decode_internal_object(*
+									       (obj_desc->
+										reference.
+										where));
+					}
+					break;
+
+				default:
+
+					acpi_os_printf
+					    ("Unknown index target type");
+					break;
+				}
+				break;
+
+			case ACPI_REFCLASS_REFOF:
+
+				if (!obj_desc->reference.object) {
+					acpi_os_printf
+					    ("Uninitialized reference subobject pointer");
+					break;
+				}
+
+				/* Reference can be to a Node or an Operand object */
+
+				switch (ACPI_GET_DESCRIPTOR_TYPE
+					(obj_desc->reference.object)) {
+				case ACPI_DESC_TYPE_NAMED:
+
+					acpi_db_decode_node(obj_desc->reference.
+							    object);
+					break;
+
+				case ACPI_DESC_TYPE_OPERAND:
+
+					acpi_db_decode_internal_object
+					    (obj_desc->reference.object);
+					break;
+
+				default:
+					break;
+				}
+				break;
+
+			case ACPI_REFCLASS_NAME:
+
+				acpi_db_decode_node(obj_desc->reference.node);
+				break;
+
+			case ACPI_REFCLASS_DEBUG:
+			case ACPI_REFCLASS_TABLE:
+
+				acpi_os_printf("\n");
+				break;
+
+			default:	/* Unknown reference class */
+
+				acpi_os_printf("%2.2X\n",
+					       obj_desc->reference.class);
+				break;
+			}
+			break;
+
+		default:
+
+			acpi_os_printf("<Obj>          ");
+			acpi_db_decode_internal_object(obj_desc);
+			break;
+		}
+		break;
+
+	default:
+
+		acpi_os_printf("<Not a valid ACPI Object Descriptor> [%s]",
+			       acpi_ut_get_descriptor_name(obj_desc));
+		break;
+	}
+
+	acpi_os_printf("\n");
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_decode_locals
+ *
+ * PARAMETERS:  walk_state      - State for current method
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display all locals for the currently running control method
+ *
+ ******************************************************************************/
+
+void acpi_db_decode_locals(struct acpi_walk_state *walk_state)
+{
+	u32 i;
+	union acpi_operand_object *obj_desc;
+	struct acpi_namespace_node *node;
+	u8 display_locals = FALSE;
+
+	obj_desc = walk_state->method_desc;
+	node = walk_state->method_node;
+
+	if (!node) {
+		acpi_os_printf
+		    ("No method node (Executing subtree for buffer or opregion)\n");
+		return;
+	}
+
+	if (node->type != ACPI_TYPE_METHOD) {
+		acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
+		return;
+	}
+
+	/* Are any locals actually set? */
+
+	for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
+		obj_desc = walk_state->local_variables[i].object;
+		if (obj_desc) {
+			display_locals = TRUE;
+			break;
+		}
+	}
+
+	/* If any are set, only display the ones that are set */
+
+	if (display_locals) {
+		acpi_os_printf
+		    ("\nInitialized Local Variables for method [%4.4s]:\n",
+		     acpi_ut_get_node_name(node));
+
+		for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) {
+			obj_desc = walk_state->local_variables[i].object;
+			if (obj_desc) {
+				acpi_os_printf("  Local%X: ", i);
+				acpi_db_display_internal_object(obj_desc,
+								walk_state);
+			}
+		}
+	} else {
+		acpi_os_printf
+		    ("No Local Variables are initialized for method [%4.4s]\n",
+		     acpi_ut_get_node_name(node));
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_decode_arguments
+ *
+ * PARAMETERS:  walk_state      - State for current method
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display all arguments for the currently running control method
+ *
+ ******************************************************************************/
+
+void acpi_db_decode_arguments(struct acpi_walk_state *walk_state)
+{
+	u32 i;
+	union acpi_operand_object *obj_desc;
+	struct acpi_namespace_node *node;
+	u8 display_args = FALSE;
+
+	node = walk_state->method_node;
+	obj_desc = walk_state->method_desc;
+
+	if (!node) {
+		acpi_os_printf
+		    ("No method node (Executing subtree for buffer or opregion)\n");
+		return;
+	}
+
+	if (node->type != ACPI_TYPE_METHOD) {
+		acpi_os_printf("Executing subtree for Buffer/Package/Region\n");
+		return;
+	}
+
+	/* Are any arguments actually set? */
+
+	for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
+		obj_desc = walk_state->arguments[i].object;
+		if (obj_desc) {
+			display_args = TRUE;
+			break;
+		}
+	}
+
+	/* If any are set, only display the ones that are set */
+
+	if (display_args) {
+		acpi_os_printf("Initialized Arguments for Method [%4.4s]:  "
+			       "(%X arguments defined for method invocation)\n",
+			       acpi_ut_get_node_name(node),
+			       obj_desc->method.param_count);
+
+		for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) {
+			obj_desc = walk_state->arguments[i].object;
+			if (obj_desc) {
+				acpi_os_printf("  Arg%u:   ", i);
+				acpi_db_display_internal_object(obj_desc,
+								walk_state);
+			}
+		}
+	} else {
+		acpi_os_printf
+		    ("No Arguments are initialized for method [%4.4s]\n",
+		     acpi_ut_get_node_name(node));
+	}
+}
diff --git a/drivers/acpi/acpica/dbstats.c b/drivers/acpi/acpica/dbstats.c
new file mode 100644
index 000000000000..4ba0a20811eb
--- /dev/null
+++ b/drivers/acpi/acpica/dbstats.c
@@ -0,0 +1,546 @@
+/*******************************************************************************
+ *
+ * Module Name: dbstats - Generation and display of ACPI table statistics
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdebug.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbstats")
+
+/* Local prototypes */
+static void acpi_db_count_namespace_objects(void);
+
+static void acpi_db_enumerate_object(union acpi_operand_object *obj_desc);
+
+static acpi_status
+acpi_db_classify_one_object(acpi_handle obj_handle,
+			    u32 nesting_level,
+			    void *context, void **return_value);
+
+#if defined ACPI_DBG_TRACK_ALLOCATIONS || defined ACPI_USE_LOCAL_CACHE
+static void acpi_db_list_info(struct acpi_memory_list *list);
+#endif
+
+/*
+ * Statistics subcommands
+ */
+static struct acpi_db_argument_info acpi_db_stat_types[] = {
+	{"ALLOCATIONS"},
+	{"OBJECTS"},
+	{"MEMORY"},
+	{"MISC"},
+	{"TABLES"},
+	{"SIZES"},
+	{"STACK"},
+	{NULL}			/* Must be null terminated */
+};
+
+#define CMD_STAT_ALLOCATIONS     0
+#define CMD_STAT_OBJECTS         1
+#define CMD_STAT_MEMORY          2
+#define CMD_STAT_MISC            3
+#define CMD_STAT_TABLES          4
+#define CMD_STAT_SIZES           5
+#define CMD_STAT_STACK           6
+
+#if defined ACPI_DBG_TRACK_ALLOCATIONS || defined ACPI_USE_LOCAL_CACHE
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_list_info
+ *
+ * PARAMETERS:  list            - Memory list/cache to be displayed
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display information about the input memory list or cache.
+ *
+ ******************************************************************************/
+
+static void acpi_db_list_info(struct acpi_memory_list *list)
+{
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+	u32 outstanding;
+#endif
+
+	acpi_os_printf("\n%s\n", list->list_name);
+
+	/* max_depth > 0 indicates a cache object */
+
+	if (list->max_depth > 0) {
+		acpi_os_printf
+		    ("    Cache: [Depth    MaxD Avail  Size]                "
+		     "%8.2X %8.2X %8.2X %8.2X\n", list->current_depth,
+		     list->max_depth, list->max_depth - list->current_depth,
+		     (list->current_depth * list->object_size));
+	}
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+	if (list->max_depth > 0) {
+		acpi_os_printf
+		    ("    Cache: [Requests Hits Misses ObjSize]             "
+		     "%8.2X %8.2X %8.2X %8.2X\n", list->requests, list->hits,
+		     list->requests - list->hits, list->object_size);
+	}
+
+	outstanding = acpi_db_get_cache_info(list);
+
+	if (list->object_size) {
+		acpi_os_printf
+		    ("    Mem:   [Alloc    Free Max    CurSize Outstanding] "
+		     "%8.2X %8.2X %8.2X %8.2X %8.2X\n", list->total_allocated,
+		     list->total_freed, list->max_occupied,
+		     outstanding * list->object_size, outstanding);
+	} else {
+		acpi_os_printf
+		    ("    Mem:   [Alloc Free Max CurSize Outstanding Total] "
+		     "%8.2X %8.2X %8.2X %8.2X %8.2X %8.2X\n",
+		     list->total_allocated, list->total_freed,
+		     list->max_occupied, list->current_total_size, outstanding,
+		     list->total_size);
+	}
+#endif
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_enumerate_object
+ *
+ * PARAMETERS:  obj_desc            - Object to be counted
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Add this object to the global counts, by object type.
+ *              Limited recursion handles subobjects and packages, and this
+ *              is probably acceptable within the AML debugger only.
+ *
+ ******************************************************************************/
+
+static void acpi_db_enumerate_object(union acpi_operand_object *obj_desc)
+{
+	u32 i;
+
+	if (!obj_desc) {
+		return;
+	}
+
+	/* Enumerate this object first */
+
+	acpi_gbl_num_objects++;
+
+	if (obj_desc->common.type > ACPI_TYPE_NS_NODE_MAX) {
+		acpi_gbl_obj_type_count_misc++;
+	} else {
+		acpi_gbl_obj_type_count[obj_desc->common.type]++;
+	}
+
+	/* Count the sub-objects */
+
+	switch (obj_desc->common.type) {
+	case ACPI_TYPE_PACKAGE:
+
+		for (i = 0; i < obj_desc->package.count; i++) {
+			acpi_db_enumerate_object(obj_desc->package.elements[i]);
+		}
+		break;
+
+	case ACPI_TYPE_DEVICE:
+
+		acpi_db_enumerate_object(obj_desc->device.notify_list[0]);
+		acpi_db_enumerate_object(obj_desc->device.notify_list[1]);
+		acpi_db_enumerate_object(obj_desc->device.handler);
+		break;
+
+	case ACPI_TYPE_BUFFER_FIELD:
+
+		if (acpi_ns_get_secondary_object(obj_desc)) {
+			acpi_gbl_obj_type_count[ACPI_TYPE_BUFFER_FIELD]++;
+		}
+		break;
+
+	case ACPI_TYPE_REGION:
+
+		acpi_gbl_obj_type_count[ACPI_TYPE_LOCAL_REGION_FIELD]++;
+		acpi_db_enumerate_object(obj_desc->region.handler);
+		break;
+
+	case ACPI_TYPE_POWER:
+
+		acpi_db_enumerate_object(obj_desc->power_resource.
+					 notify_list[0]);
+		acpi_db_enumerate_object(obj_desc->power_resource.
+					 notify_list[1]);
+		break;
+
+	case ACPI_TYPE_PROCESSOR:
+
+		acpi_db_enumerate_object(obj_desc->processor.notify_list[0]);
+		acpi_db_enumerate_object(obj_desc->processor.notify_list[1]);
+		acpi_db_enumerate_object(obj_desc->processor.handler);
+		break;
+
+	case ACPI_TYPE_THERMAL:
+
+		acpi_db_enumerate_object(obj_desc->thermal_zone.notify_list[0]);
+		acpi_db_enumerate_object(obj_desc->thermal_zone.notify_list[1]);
+		acpi_db_enumerate_object(obj_desc->thermal_zone.handler);
+		break;
+
+	default:
+
+		break;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_classify_one_object
+ *
+ * PARAMETERS:  Callback for walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enumerate both the object descriptor (including subobjects) and
+ *              the parent namespace node.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_classify_one_object(acpi_handle obj_handle,
+			    u32 nesting_level,
+			    void *context, void **return_value)
+{
+	struct acpi_namespace_node *node;
+	union acpi_operand_object *obj_desc;
+	u32 type;
+
+	acpi_gbl_num_nodes++;
+
+	node = (struct acpi_namespace_node *)obj_handle;
+	obj_desc = acpi_ns_get_attached_object(node);
+
+	acpi_db_enumerate_object(obj_desc);
+
+	type = node->type;
+	if (type > ACPI_TYPE_NS_NODE_MAX) {
+		acpi_gbl_node_type_count_misc++;
+	} else {
+		acpi_gbl_node_type_count[type]++;
+	}
+
+	return (AE_OK);
+
+#ifdef ACPI_FUTURE_IMPLEMENTATION
+
+	/* TBD: These need to be counted during the initial parsing phase */
+
+	if (acpi_ps_is_named_op(op->opcode)) {
+		num_nodes++;
+	}
+
+	if (is_method) {
+		num_method_elements++;
+	}
+
+	num_grammar_elements++;
+	op = acpi_ps_get_depth_next(root, op);
+
+	size_of_parse_tree = (num_grammar_elements - num_method_elements) *
+	    (u32)sizeof(union acpi_parse_object);
+	size_of_method_trees =
+	    num_method_elements * (u32)sizeof(union acpi_parse_object);
+	size_of_node_entries =
+	    num_nodes * (u32)sizeof(struct acpi_namespace_node);
+	size_of_acpi_objects =
+	    num_nodes * (u32)sizeof(union acpi_operand_object);
+#endif
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_count_namespace_objects
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Count and classify the entire namespace, including all
+ *              namespace nodes and attached objects.
+ *
+ ******************************************************************************/
+
+static void acpi_db_count_namespace_objects(void)
+{
+	u32 i;
+
+	acpi_gbl_num_nodes = 0;
+	acpi_gbl_num_objects = 0;
+
+	acpi_gbl_obj_type_count_misc = 0;
+	for (i = 0; i < (ACPI_TYPE_NS_NODE_MAX - 1); i++) {
+		acpi_gbl_obj_type_count[i] = 0;
+		acpi_gbl_node_type_count[i] = 0;
+	}
+
+	(void)acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				     ACPI_UINT32_MAX, FALSE,
+				     acpi_db_classify_one_object, NULL, NULL,
+				     NULL);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_display_statistics
+ *
+ * PARAMETERS:  type_arg        - Subcommand
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Display various statistics
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_display_statistics(char *type_arg)
+{
+	u32 i;
+	u32 temp;
+
+	acpi_ut_strupr(type_arg);
+	temp = acpi_db_match_argument(type_arg, acpi_db_stat_types);
+	if (temp == ACPI_TYPE_NOT_FOUND) {
+		acpi_os_printf("Invalid or unsupported argument\n");
+		return (AE_OK);
+	}
+
+	switch (temp) {
+	case CMD_STAT_ALLOCATIONS:
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+		acpi_ut_dump_allocation_info();
+#endif
+		break;
+
+	case CMD_STAT_TABLES:
+
+		acpi_os_printf("ACPI Table Information (not implemented):\n\n");
+		break;
+
+	case CMD_STAT_OBJECTS:
+
+		acpi_db_count_namespace_objects();
+
+		acpi_os_printf
+		    ("\nObjects defined in the current namespace:\n\n");
+
+		acpi_os_printf("%16.16s %10.10s %10.10s\n",
+			       "ACPI_TYPE", "NODES", "OBJECTS");
+
+		for (i = 0; i < ACPI_TYPE_NS_NODE_MAX; i++) {
+			acpi_os_printf("%16.16s % 10ld% 10ld\n",
+				       acpi_ut_get_type_name(i),
+				       acpi_gbl_node_type_count[i],
+				       acpi_gbl_obj_type_count[i]);
+		}
+		acpi_os_printf("%16.16s % 10ld% 10ld\n", "Misc/Unknown",
+			       acpi_gbl_node_type_count_misc,
+			       acpi_gbl_obj_type_count_misc);
+
+		acpi_os_printf("%16.16s % 10ld% 10ld\n", "TOTALS:",
+			       acpi_gbl_num_nodes, acpi_gbl_num_objects);
+		break;
+
+	case CMD_STAT_MEMORY:
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+		acpi_os_printf
+		    ("\n----Object Statistics (all in hex)---------\n");
+
+		acpi_db_list_info(acpi_gbl_global_list);
+		acpi_db_list_info(acpi_gbl_ns_node_list);
+#endif
+
+#ifdef ACPI_USE_LOCAL_CACHE
+		acpi_os_printf
+		    ("\n----Cache Statistics (all in hex)---------\n");
+		acpi_db_list_info(acpi_gbl_operand_cache);
+		acpi_db_list_info(acpi_gbl_ps_node_cache);
+		acpi_db_list_info(acpi_gbl_ps_node_ext_cache);
+		acpi_db_list_info(acpi_gbl_state_cache);
+#endif
+
+		break;
+
+	case CMD_STAT_MISC:
+
+		acpi_os_printf("\nMiscellaneous Statistics:\n\n");
+		acpi_os_printf("Calls to AcpiPsFind:.. ........% 7ld\n",
+			       acpi_gbl_ps_find_count);
+		acpi_os_printf("Calls to AcpiNsLookup:..........% 7ld\n",
+			       acpi_gbl_ns_lookup_count);
+
+		acpi_os_printf("\n");
+
+		acpi_os_printf("Mutex usage:\n\n");
+		for (i = 0; i < ACPI_NUM_MUTEX; i++) {
+			acpi_os_printf("%-28s:     % 7ld\n",
+				       acpi_ut_get_mutex_name(i),
+				       acpi_gbl_mutex_info[i].use_count);
+		}
+		break;
+
+	case CMD_STAT_SIZES:
+
+		acpi_os_printf("\nInternal object sizes:\n\n");
+
+		acpi_os_printf("Common         %3d\n",
+			       sizeof(struct acpi_object_common));
+		acpi_os_printf("Number         %3d\n",
+			       sizeof(struct acpi_object_integer));
+		acpi_os_printf("String         %3d\n",
+			       sizeof(struct acpi_object_string));
+		acpi_os_printf("Buffer         %3d\n",
+			       sizeof(struct acpi_object_buffer));
+		acpi_os_printf("Package        %3d\n",
+			       sizeof(struct acpi_object_package));
+		acpi_os_printf("BufferField    %3d\n",
+			       sizeof(struct acpi_object_buffer_field));
+		acpi_os_printf("Device         %3d\n",
+			       sizeof(struct acpi_object_device));
+		acpi_os_printf("Event          %3d\n",
+			       sizeof(struct acpi_object_event));
+		acpi_os_printf("Method         %3d\n",
+			       sizeof(struct acpi_object_method));
+		acpi_os_printf("Mutex          %3d\n",
+			       sizeof(struct acpi_object_mutex));
+		acpi_os_printf("Region         %3d\n",
+			       sizeof(struct acpi_object_region));
+		acpi_os_printf("PowerResource  %3d\n",
+			       sizeof(struct acpi_object_power_resource));
+		acpi_os_printf("Processor      %3d\n",
+			       sizeof(struct acpi_object_processor));
+		acpi_os_printf("ThermalZone    %3d\n",
+			       sizeof(struct acpi_object_thermal_zone));
+		acpi_os_printf("RegionField    %3d\n",
+			       sizeof(struct acpi_object_region_field));
+		acpi_os_printf("BankField      %3d\n",
+			       sizeof(struct acpi_object_bank_field));
+		acpi_os_printf("IndexField     %3d\n",
+			       sizeof(struct acpi_object_index_field));
+		acpi_os_printf("Reference      %3d\n",
+			       sizeof(struct acpi_object_reference));
+		acpi_os_printf("Notify         %3d\n",
+			       sizeof(struct acpi_object_notify_handler));
+		acpi_os_printf("AddressSpace   %3d\n",
+			       sizeof(struct acpi_object_addr_handler));
+		acpi_os_printf("Extra          %3d\n",
+			       sizeof(struct acpi_object_extra));
+		acpi_os_printf("Data           %3d\n",
+			       sizeof(struct acpi_object_data));
+
+		acpi_os_printf("\n");
+
+		acpi_os_printf("ParseObject    %3d\n",
+			       sizeof(struct acpi_parse_obj_common));
+		acpi_os_printf("ParseObjectNamed %3d\n",
+			       sizeof(struct acpi_parse_obj_named));
+		acpi_os_printf("ParseObjectAsl %3d\n",
+			       sizeof(struct acpi_parse_obj_asl));
+		acpi_os_printf("OperandObject  %3d\n",
+			       sizeof(union acpi_operand_object));
+		acpi_os_printf("NamespaceNode  %3d\n",
+			       sizeof(struct acpi_namespace_node));
+		acpi_os_printf("AcpiObject     %3d\n",
+			       sizeof(union acpi_object));
+
+		acpi_os_printf("\n");
+
+		acpi_os_printf("Generic State  %3d\n",
+			       sizeof(union acpi_generic_state));
+		acpi_os_printf("Common State   %3d\n",
+			       sizeof(struct acpi_common_state));
+		acpi_os_printf("Control State  %3d\n",
+			       sizeof(struct acpi_control_state));
+		acpi_os_printf("Update State   %3d\n",
+			       sizeof(struct acpi_update_state));
+		acpi_os_printf("Scope State    %3d\n",
+			       sizeof(struct acpi_scope_state));
+		acpi_os_printf("Parse Scope    %3d\n",
+			       sizeof(struct acpi_pscope_state));
+		acpi_os_printf("Package State  %3d\n",
+			       sizeof(struct acpi_pkg_state));
+		acpi_os_printf("Thread State   %3d\n",
+			       sizeof(struct acpi_thread_state));
+		acpi_os_printf("Result Values  %3d\n",
+			       sizeof(struct acpi_result_values));
+		acpi_os_printf("Notify Info    %3d\n",
+			       sizeof(struct acpi_notify_info));
+		break;
+
+	case CMD_STAT_STACK:
+#if defined(ACPI_DEBUG_OUTPUT)
+
+		temp =
+		    (u32)ACPI_PTR_DIFF(acpi_gbl_entry_stack_pointer,
+				       acpi_gbl_lowest_stack_pointer);
+
+		acpi_os_printf("\nSubsystem Stack Usage:\n\n");
+		acpi_os_printf("Entry Stack Pointer        %p\n",
+			       acpi_gbl_entry_stack_pointer);
+		acpi_os_printf("Lowest Stack Pointer       %p\n",
+			       acpi_gbl_lowest_stack_pointer);
+		acpi_os_printf("Stack Use                  %X (%u)\n", temp,
+			       temp);
+		acpi_os_printf("Deepest Procedure Nesting  %u\n",
+			       acpi_gbl_deepest_nesting);
+#endif
+		break;
+
+	default:
+
+		break;
+	}
+
+	acpi_os_printf("\n");
+	return (AE_OK);
+}
diff --git a/drivers/acpi/acpica/dbtest.c b/drivers/acpi/acpica/dbtest.c
new file mode 100644
index 000000000000..10ea8bf9b810
--- /dev/null
+++ b/drivers/acpi/acpica/dbtest.c
@@ -0,0 +1,1057 @@
+/*******************************************************************************
+ *
+ * Module Name: dbtest - Various debug-related tests
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdebug.h"
+#include "acnamesp.h"
+#include "acpredef.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbtest")
+
+/* Local prototypes */
+static void acpi_db_test_all_objects(void);
+
+static acpi_status
+acpi_db_test_one_object(acpi_handle obj_handle,
+			u32 nesting_level, void *context, void **return_value);
+
+static acpi_status
+acpi_db_test_integer_type(struct acpi_namespace_node *node, u32 bit_length);
+
+static acpi_status
+acpi_db_test_buffer_type(struct acpi_namespace_node *node, u32 bit_length);
+
+static acpi_status
+acpi_db_test_string_type(struct acpi_namespace_node *node, u32 byte_length);
+
+static acpi_status
+acpi_db_read_from_object(struct acpi_namespace_node *node,
+			 acpi_object_type expected_type,
+			 union acpi_object **value);
+
+static acpi_status
+acpi_db_write_to_object(struct acpi_namespace_node *node,
+			union acpi_object *value);
+
+static void acpi_db_evaluate_all_predefined_names(char *count_arg);
+
+static acpi_status
+acpi_db_evaluate_one_predefined_name(acpi_handle obj_handle,
+				     u32 nesting_level,
+				     void *context, void **return_value);
+
+/*
+ * Test subcommands
+ */
+static struct acpi_db_argument_info acpi_db_test_types[] = {
+	{"OBJECTS"},
+	{"PREDEFINED"},
+	{NULL}			/* Must be null terminated */
+};
+
+#define CMD_TEST_OBJECTS        0
+#define CMD_TEST_PREDEFINED     1
+
+#define BUFFER_FILL_VALUE       0xFF
+
+/*
+ * Support for the special debugger read/write control methods.
+ * These methods are installed into the current namespace and are
+ * used to read and write the various namespace objects. The point
+ * is to force the AML interpreter do all of the work.
+ */
+#define ACPI_DB_READ_METHOD     "\\_T98"
+#define ACPI_DB_WRITE_METHOD    "\\_T99"
+
+static acpi_handle read_handle = NULL;
+static acpi_handle write_handle = NULL;
+
+/* ASL Definitions of the debugger read/write control methods */
+
+#if 0
+definition_block("ssdt.aml", "SSDT", 2, "Intel", "DEBUG", 0x00000001)
+{
+	method(_T98, 1, not_serialized) {	/* Read */
+		return (de_ref_of(arg0))
+	}
+}
+
+definition_block("ssdt2.aml", "SSDT", 2, "Intel", "DEBUG", 0x00000001)
+{
+	method(_T99, 2, not_serialized) {	/* Write */
+		store(arg1, arg0)
+	}
+}
+#endif
+
+static unsigned char read_method_code[] = {
+	0x53, 0x53, 0x44, 0x54, 0x2E, 0x00, 0x00, 0x00,	/* 00000000    "SSDT...." */
+	0x02, 0xC9, 0x49, 0x6E, 0x74, 0x65, 0x6C, 0x00,	/* 00000008    "..Intel." */
+	0x44, 0x45, 0x42, 0x55, 0x47, 0x00, 0x00, 0x00,	/* 00000010    "DEBUG..." */
+	0x01, 0x00, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C,	/* 00000018    "....INTL" */
+	0x18, 0x12, 0x13, 0x20, 0x14, 0x09, 0x5F, 0x54,	/* 00000020    "... .._T" */
+	0x39, 0x38, 0x01, 0xA4, 0x83, 0x68	/* 00000028    "98...h"   */
+};
+
+static unsigned char write_method_code[] = {
+	0x53, 0x53, 0x44, 0x54, 0x2E, 0x00, 0x00, 0x00,	/* 00000000    "SSDT...." */
+	0x02, 0x15, 0x49, 0x6E, 0x74, 0x65, 0x6C, 0x00,	/* 00000008    "..Intel." */
+	0x44, 0x45, 0x42, 0x55, 0x47, 0x00, 0x00, 0x00,	/* 00000010    "DEBUG..." */
+	0x01, 0x00, 0x00, 0x00, 0x49, 0x4E, 0x54, 0x4C,	/* 00000018    "....INTL" */
+	0x18, 0x12, 0x13, 0x20, 0x14, 0x09, 0x5F, 0x54,	/* 00000020    "... .._T" */
+	0x39, 0x39, 0x02, 0x70, 0x69, 0x68	/* 00000028    "99.pih"   */
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_execute_test
+ *
+ * PARAMETERS:  type_arg        - Subcommand
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Execute various debug tests.
+ *
+ * Note: Code is prepared for future expansion of the TEST command.
+ *
+ ******************************************************************************/
+
+void acpi_db_execute_test(char *type_arg)
+{
+	u32 temp;
+
+	acpi_ut_strupr(type_arg);
+	temp = acpi_db_match_argument(type_arg, acpi_db_test_types);
+	if (temp == ACPI_TYPE_NOT_FOUND) {
+		acpi_os_printf("Invalid or unsupported argument\n");
+		return;
+	}
+
+	switch (temp) {
+	case CMD_TEST_OBJECTS:
+
+		acpi_db_test_all_objects();
+		break;
+
+	case CMD_TEST_PREDEFINED:
+
+		acpi_db_evaluate_all_predefined_names(NULL);
+		break;
+
+	default:
+		break;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_test_all_objects
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: This test implements the OBJECTS subcommand. It exercises the
+ *              namespace by reading/writing/comparing all data objects such
+ *              as integers, strings, buffers, fields, buffer fields, etc.
+ *
+ ******************************************************************************/
+
+static void acpi_db_test_all_objects(void)
+{
+	acpi_status status;
+
+	/* Install the debugger read-object control method if necessary */
+
+	if (!read_handle) {
+		status = acpi_install_method(read_method_code);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf
+			    ("%s, Could not install debugger read method\n",
+			     acpi_format_exception(status));
+			return;
+		}
+
+		status =
+		    acpi_get_handle(NULL, ACPI_DB_READ_METHOD, &read_handle);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf
+			    ("Could not obtain handle for debug method %s\n",
+			     ACPI_DB_READ_METHOD);
+			return;
+		}
+	}
+
+	/* Install the debugger write-object control method if necessary */
+
+	if (!write_handle) {
+		status = acpi_install_method(write_method_code);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf
+			    ("%s, Could not install debugger write method\n",
+			     acpi_format_exception(status));
+			return;
+		}
+
+		status =
+		    acpi_get_handle(NULL, ACPI_DB_WRITE_METHOD, &write_handle);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf
+			    ("Could not obtain handle for debug method %s\n",
+			     ACPI_DB_WRITE_METHOD);
+			return;
+		}
+	}
+
+	/* Walk the entire namespace, testing each supported named data object */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX, acpi_db_test_one_object,
+				  NULL, NULL, NULL);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_test_one_object
+ *
+ * PARAMETERS:  acpi_walk_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Test one namespace object. Supported types are Integer,
+ *              String, Buffer, buffer_field, and field_unit. All other object
+ *              types are simply ignored.
+ *
+ *              Note: Support for Packages is not implemented.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_test_one_object(acpi_handle obj_handle,
+			u32 nesting_level, void *context, void **return_value)
+{
+	struct acpi_namespace_node *node;
+	union acpi_operand_object *obj_desc;
+	union acpi_operand_object *region_obj;
+	acpi_object_type local_type;
+	u32 bit_length = 0;
+	u32 byte_length = 0;
+	acpi_status status = AE_OK;
+
+	node = ACPI_CAST_PTR(struct acpi_namespace_node, obj_handle);
+	obj_desc = node->object;
+
+	/*
+	 * For the supported types, get the actual bit length or
+	 * byte length. Map the type to one of Integer/String/Buffer.
+	 */
+	switch (node->type) {
+	case ACPI_TYPE_INTEGER:
+
+		/* Integer width is either 32 or 64 */
+
+		local_type = ACPI_TYPE_INTEGER;
+		bit_length = acpi_gbl_integer_bit_width;
+		break;
+
+	case ACPI_TYPE_STRING:
+
+		local_type = ACPI_TYPE_STRING;
+		byte_length = obj_desc->string.length;
+		break;
+
+	case ACPI_TYPE_BUFFER:
+
+		local_type = ACPI_TYPE_BUFFER;
+		byte_length = obj_desc->buffer.length;
+		bit_length = byte_length * 8;
+		break;
+
+	case ACPI_TYPE_FIELD_UNIT:
+	case ACPI_TYPE_BUFFER_FIELD:
+	case ACPI_TYPE_LOCAL_REGION_FIELD:
+	case ACPI_TYPE_LOCAL_INDEX_FIELD:
+	case ACPI_TYPE_LOCAL_BANK_FIELD:
+
+		local_type = ACPI_TYPE_INTEGER;
+		if (obj_desc) {
+			/*
+			 * Returned object will be a Buffer if the field length
+			 * is larger than the size of an Integer (32 or 64 bits
+			 * depending on the DSDT version).
+			 */
+			bit_length = obj_desc->common_field.bit_length;
+			byte_length = ACPI_ROUND_BITS_UP_TO_BYTES(bit_length);
+			if (bit_length > acpi_gbl_integer_bit_width) {
+				local_type = ACPI_TYPE_BUFFER;
+			}
+		}
+		break;
+
+	default:
+
+		/* Ignore all other types */
+
+		return (AE_OK);
+	}
+
+	/* Emit the common prefix: Type:Name */
+
+	acpi_os_printf("%14s: %4.4s",
+		       acpi_ut_get_type_name(node->type), node->name.ascii);
+	if (!obj_desc) {
+		acpi_os_printf(" Ignoring, no attached object\n");
+		return (AE_OK);
+	}
+
+	/*
+	 * Check for unsupported region types. Note: acpi_exec simulates
+	 * access to system_memory, system_IO, PCI_Config, and EC.
+	 */
+	switch (node->type) {
+	case ACPI_TYPE_LOCAL_REGION_FIELD:
+
+		region_obj = obj_desc->field.region_obj;
+		switch (region_obj->region.space_id) {
+		case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+		case ACPI_ADR_SPACE_SYSTEM_IO:
+		case ACPI_ADR_SPACE_PCI_CONFIG:
+		case ACPI_ADR_SPACE_EC:
+
+			break;
+
+		default:
+
+			acpi_os_printf
+			    ("    %s space is not supported [%4.4s]\n",
+			     acpi_ut_get_region_name(region_obj->region.
+						     space_id),
+			     region_obj->region.node->name.ascii);
+			return (AE_OK);
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	/* At this point, we have resolved the object to one of the major types */
+
+	switch (local_type) {
+	case ACPI_TYPE_INTEGER:
+
+		status = acpi_db_test_integer_type(node, bit_length);
+		break;
+
+	case ACPI_TYPE_STRING:
+
+		status = acpi_db_test_string_type(node, byte_length);
+		break;
+
+	case ACPI_TYPE_BUFFER:
+
+		status = acpi_db_test_buffer_type(node, bit_length);
+		break;
+
+	default:
+
+		acpi_os_printf(" Ignoring, type not implemented (%2.2X)",
+			       local_type);
+		break;
+	}
+
+	switch (node->type) {
+	case ACPI_TYPE_LOCAL_REGION_FIELD:
+
+		region_obj = obj_desc->field.region_obj;
+		acpi_os_printf(" (%s)",
+			       acpi_ut_get_region_name(region_obj->region.
+						       space_id));
+		break;
+
+	default:
+		break;
+	}
+
+	acpi_os_printf("\n");
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_test_integer_type
+ *
+ * PARAMETERS:  node                - Parent NS node for the object
+ *              bit_length          - Actual length of the object. Used for
+ *                                    support of arbitrary length field_unit
+ *                                    and buffer_field objects.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Test read/write for an Integer-valued object. Performs a
+ *              write/read/compare of an arbitrary new value, then performs
+ *              a write/read/compare of the original value.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_test_integer_type(struct acpi_namespace_node *node, u32 bit_length)
+{
+	union acpi_object *temp1 = NULL;
+	union acpi_object *temp2 = NULL;
+	union acpi_object *temp3 = NULL;
+	union acpi_object write_value;
+	u64 value_to_write;
+	acpi_status status;
+
+	if (bit_length > 64) {
+		acpi_os_printf(" Invalid length for an Integer: %u",
+			       bit_length);
+		return (AE_OK);
+	}
+
+	/* Read the original value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_INTEGER, &temp1);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	acpi_os_printf(" (%4.4X/%3.3X) %8.8X%8.8X",
+		       bit_length, ACPI_ROUND_BITS_UP_TO_BYTES(bit_length),
+		       ACPI_FORMAT_UINT64(temp1->integer.value));
+
+	value_to_write = ACPI_UINT64_MAX >> (64 - bit_length);
+	if (temp1->integer.value == value_to_write) {
+		value_to_write = 0;
+	}
+
+	/* Write a new value */
+
+	write_value.type = ACPI_TYPE_INTEGER;
+	write_value.integer.value = value_to_write;
+	status = acpi_db_write_to_object(node, &write_value);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	/* Ensure that we can read back the new value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_INTEGER, &temp2);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	if (temp2->integer.value != value_to_write) {
+		acpi_os_printf(" MISMATCH 2: %8.8X%8.8X, expecting %8.8X%8.8X",
+			       ACPI_FORMAT_UINT64(temp2->integer.value),
+			       ACPI_FORMAT_UINT64(value_to_write));
+	}
+
+	/* Write back the original value */
+
+	write_value.integer.value = temp1->integer.value;
+	status = acpi_db_write_to_object(node, &write_value);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	/* Ensure that we can read back the original value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_INTEGER, &temp3);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	if (temp3->integer.value != temp1->integer.value) {
+		acpi_os_printf(" MISMATCH 3: %8.8X%8.8X, expecting %8.8X%8.8X",
+			       ACPI_FORMAT_UINT64(temp3->integer.value),
+			       ACPI_FORMAT_UINT64(temp1->integer.value));
+	}
+
+exit:
+	if (temp1) {
+		acpi_os_free(temp1);
+	}
+	if (temp2) {
+		acpi_os_free(temp2);
+	}
+	if (temp3) {
+		acpi_os_free(temp3);
+	}
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_test_buffer_type
+ *
+ * PARAMETERS:  node                - Parent NS node for the object
+ *              bit_length          - Actual length of the object.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Test read/write for an Buffer-valued object. Performs a
+ *              write/read/compare of an arbitrary new value, then performs
+ *              a write/read/compare of the original value.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_test_buffer_type(struct acpi_namespace_node *node, u32 bit_length)
+{
+	union acpi_object *temp1 = NULL;
+	union acpi_object *temp2 = NULL;
+	union acpi_object *temp3 = NULL;
+	u8 *buffer;
+	union acpi_object write_value;
+	acpi_status status;
+	u32 byte_length;
+	u32 i;
+	u8 extra_bits;
+
+	byte_length = ACPI_ROUND_BITS_UP_TO_BYTES(bit_length);
+	if (byte_length == 0) {
+		acpi_os_printf(" Ignoring zero length buffer");
+		return (AE_OK);
+	}
+
+	/* Allocate a local buffer */
+
+	buffer = ACPI_ALLOCATE_ZEROED(byte_length);
+	if (!buffer) {
+		return (AE_NO_MEMORY);
+	}
+
+	/* Read the original value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_BUFFER, &temp1);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	/* Emit a few bytes of the buffer */
+
+	acpi_os_printf(" (%4.4X/%3.3X)", bit_length, temp1->buffer.length);
+	for (i = 0; ((i < 4) && (i < byte_length)); i++) {
+		acpi_os_printf(" %2.2X", temp1->buffer.pointer[i]);
+	}
+	acpi_os_printf("... ");
+
+	/*
+	 * Write a new value.
+	 *
+	 * Handle possible extra bits at the end of the buffer. Can
+	 * happen for field_units larger than an integer, but the bit
+	 * count is not an integral number of bytes. Zero out the
+	 * unused bits.
+	 */
+	memset(buffer, BUFFER_FILL_VALUE, byte_length);
+	extra_bits = bit_length % 8;
+	if (extra_bits) {
+		buffer[byte_length - 1] = ACPI_MASK_BITS_ABOVE(extra_bits);
+	}
+
+	write_value.type = ACPI_TYPE_BUFFER;
+	write_value.buffer.length = byte_length;
+	write_value.buffer.pointer = buffer;
+
+	status = acpi_db_write_to_object(node, &write_value);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	/* Ensure that we can read back the new value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_BUFFER, &temp2);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	if (memcmp(temp2->buffer.pointer, buffer, byte_length)) {
+		acpi_os_printf(" MISMATCH 2: New buffer value");
+	}
+
+	/* Write back the original value */
+
+	write_value.buffer.length = byte_length;
+	write_value.buffer.pointer = temp1->buffer.pointer;
+
+	status = acpi_db_write_to_object(node, &write_value);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	/* Ensure that we can read back the original value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_BUFFER, &temp3);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	if (memcmp(temp1->buffer.pointer, temp3->buffer.pointer, byte_length)) {
+		acpi_os_printf(" MISMATCH 3: While restoring original buffer");
+	}
+
+exit:
+	ACPI_FREE(buffer);
+	if (temp1) {
+		acpi_os_free(temp1);
+	}
+	if (temp2) {
+		acpi_os_free(temp2);
+	}
+	if (temp3) {
+		acpi_os_free(temp3);
+	}
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_test_string_type
+ *
+ * PARAMETERS:  node                - Parent NS node for the object
+ *              byte_length         - Actual length of the object.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Test read/write for an String-valued object. Performs a
+ *              write/read/compare of an arbitrary new value, then performs
+ *              a write/read/compare of the original value.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_test_string_type(struct acpi_namespace_node *node, u32 byte_length)
+{
+	union acpi_object *temp1 = NULL;
+	union acpi_object *temp2 = NULL;
+	union acpi_object *temp3 = NULL;
+	char *value_to_write = "Test String from AML Debugger";
+	union acpi_object write_value;
+	acpi_status status;
+
+	/* Read the original value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_STRING, &temp1);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	acpi_os_printf(" (%4.4X/%3.3X) \"%s\"", (temp1->string.length * 8),
+		       temp1->string.length, temp1->string.pointer);
+
+	/* Write a new value */
+
+	write_value.type = ACPI_TYPE_STRING;
+	write_value.string.length = strlen(value_to_write);
+	write_value.string.pointer = value_to_write;
+
+	status = acpi_db_write_to_object(node, &write_value);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	/* Ensure that we can read back the new value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_STRING, &temp2);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	if (strcmp(temp2->string.pointer, value_to_write)) {
+		acpi_os_printf(" MISMATCH 2: %s, expecting %s",
+			       temp2->string.pointer, value_to_write);
+	}
+
+	/* Write back the original value */
+
+	write_value.string.length = strlen(temp1->string.pointer);
+	write_value.string.pointer = temp1->string.pointer;
+
+	status = acpi_db_write_to_object(node, &write_value);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	/* Ensure that we can read back the original value */
+
+	status = acpi_db_read_from_object(node, ACPI_TYPE_STRING, &temp3);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	if (strcmp(temp1->string.pointer, temp3->string.pointer)) {
+		acpi_os_printf(" MISMATCH 3: %s, expecting %s",
+			       temp3->string.pointer, temp1->string.pointer);
+	}
+
+exit:
+	if (temp1) {
+		acpi_os_free(temp1);
+	}
+	if (temp2) {
+		acpi_os_free(temp2);
+	}
+	if (temp3) {
+		acpi_os_free(temp3);
+	}
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_read_from_object
+ *
+ * PARAMETERS:  node                - Parent NS node for the object
+ *              expected_type       - Object type expected from the read
+ *              value               - Where the value read is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Performs a read from the specified object by invoking the
+ *              special debugger control method that reads the object. Thus,
+ *              the AML interpreter is doing all of the work, increasing the
+ *              validity of the test.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_read_from_object(struct acpi_namespace_node *node,
+			 acpi_object_type expected_type,
+			 union acpi_object **value)
+{
+	union acpi_object *ret_value;
+	struct acpi_object_list param_objects;
+	union acpi_object params[2];
+	struct acpi_buffer return_obj;
+	acpi_status status;
+
+	params[0].type = ACPI_TYPE_LOCAL_REFERENCE;
+	params[0].reference.actual_type = node->type;
+	params[0].reference.handle = ACPI_CAST_PTR(acpi_handle, node);
+
+	param_objects.count = 1;
+	param_objects.pointer = params;
+
+	return_obj.length = ACPI_ALLOCATE_BUFFER;
+
+	acpi_gbl_method_executing = TRUE;
+	status = acpi_evaluate_object(read_handle, NULL,
+				      &param_objects, &return_obj);
+	acpi_gbl_method_executing = FALSE;
+
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not read from object, %s",
+			       acpi_format_exception(status));
+		return (status);
+	}
+
+	ret_value = (union acpi_object *)return_obj.pointer;
+
+	switch (ret_value->type) {
+	case ACPI_TYPE_INTEGER:
+	case ACPI_TYPE_BUFFER:
+	case ACPI_TYPE_STRING:
+		/*
+		 * Did we receive the type we wanted? Most important for the
+		 * Integer/Buffer case (when a field is larger than an Integer,
+		 * it should return a Buffer).
+		 */
+		if (ret_value->type != expected_type) {
+			acpi_os_printf
+			    (" Type mismatch: Expected %s, Received %s",
+			     acpi_ut_get_type_name(expected_type),
+			     acpi_ut_get_type_name(ret_value->type));
+
+			return (AE_TYPE);
+		}
+
+		*value = ret_value;
+		break;
+
+	default:
+
+		acpi_os_printf(" Unsupported return object type, %s",
+			       acpi_ut_get_type_name(ret_value->type));
+
+		acpi_os_free(return_obj.pointer);
+		return (AE_TYPE);
+	}
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_write_to_object
+ *
+ * PARAMETERS:  node                - Parent NS node for the object
+ *              value               - Value to be written
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Performs a write to the specified object by invoking the
+ *              special debugger control method that writes the object. Thus,
+ *              the AML interpreter is doing all of the work, increasing the
+ *              validity of the test.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_write_to_object(struct acpi_namespace_node *node,
+			union acpi_object *value)
+{
+	struct acpi_object_list param_objects;
+	union acpi_object params[2];
+	acpi_status status;
+
+	params[0].type = ACPI_TYPE_LOCAL_REFERENCE;
+	params[0].reference.actual_type = node->type;
+	params[0].reference.handle = ACPI_CAST_PTR(acpi_handle, node);
+
+	/* Copy the incoming user parameter */
+
+	memcpy(&params[1], value, sizeof(union acpi_object));
+
+	param_objects.count = 2;
+	param_objects.pointer = params;
+
+	acpi_gbl_method_executing = TRUE;
+	status = acpi_evaluate_object(write_handle, NULL, &param_objects, NULL);
+	acpi_gbl_method_executing = FALSE;
+
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not write to object, %s",
+			       acpi_format_exception(status));
+	}
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_evaluate_all_predefined_names
+ *
+ * PARAMETERS:  count_arg           - Max number of methods to execute
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Namespace batch execution. Execute predefined names in the
+ *              namespace, up to the max count, if specified.
+ *
+ ******************************************************************************/
+
+static void acpi_db_evaluate_all_predefined_names(char *count_arg)
+{
+	struct acpi_db_execute_walk info;
+
+	info.count = 0;
+	info.max_count = ACPI_UINT32_MAX;
+
+	if (count_arg) {
+		info.max_count = strtoul(count_arg, NULL, 0);
+	}
+
+	/* Search all nodes in namespace */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX,
+				  acpi_db_evaluate_one_predefined_name, NULL,
+				  (void *)&info, NULL);
+
+	acpi_os_printf("Evaluated %u predefined names in the namespace\n",
+		       info.count);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_evaluate_one_predefined_name
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Batch execution module. Currently only executes predefined
+ *              ACPI names.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_evaluate_one_predefined_name(acpi_handle obj_handle,
+				     u32 nesting_level,
+				     void *context, void **return_value)
+{
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+	struct acpi_db_execute_walk *info =
+	    (struct acpi_db_execute_walk *)context;
+	char *pathname;
+	const union acpi_predefined_info *predefined;
+	struct acpi_device_info *obj_info;
+	struct acpi_object_list param_objects;
+	union acpi_object params[ACPI_METHOD_NUM_ARGS];
+	union acpi_object *this_param;
+	struct acpi_buffer return_obj;
+	acpi_status status;
+	u16 arg_type_list;
+	u8 arg_count;
+	u8 arg_type;
+	u32 i;
+
+	/* The name must be a predefined ACPI name */
+
+	predefined = acpi_ut_match_predefined_method(node->name.ascii);
+	if (!predefined) {
+		return (AE_OK);
+	}
+
+	if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
+		return (AE_OK);
+	}
+
+	pathname = acpi_ns_get_external_pathname(node);
+	if (!pathname) {
+		return (AE_OK);
+	}
+
+	/* Get the object info for number of method parameters */
+
+	status = acpi_get_object_info(obj_handle, &obj_info);
+	if (ACPI_FAILURE(status)) {
+		ACPI_FREE(pathname);
+		return (status);
+	}
+
+	param_objects.count = 0;
+	param_objects.pointer = NULL;
+
+	if (obj_info->type == ACPI_TYPE_METHOD) {
+
+		/* Setup default parameters (with proper types) */
+
+		arg_type_list = predefined->info.argument_list;
+		arg_count = METHOD_GET_ARG_COUNT(arg_type_list);
+
+		/*
+		 * Setup the ACPI-required number of arguments, regardless of what
+		 * the actual method defines. If there is a difference, then the
+		 * method is wrong and a warning will be issued during execution.
+		 */
+		this_param = params;
+		for (i = 0; i < arg_count; i++) {
+			arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
+			this_param->type = arg_type;
+
+			switch (arg_type) {
+			case ACPI_TYPE_INTEGER:
+
+				this_param->integer.value = 1;
+				break;
+
+			case ACPI_TYPE_STRING:
+
+				this_param->string.pointer =
+				    "This is the default argument string";
+				this_param->string.length =
+				    strlen(this_param->string.pointer);
+				break;
+
+			case ACPI_TYPE_BUFFER:
+
+				this_param->buffer.pointer = (u8 *)params;	/* just a garbage buffer */
+				this_param->buffer.length = 48;
+				break;
+
+			case ACPI_TYPE_PACKAGE:
+
+				this_param->package.elements = NULL;
+				this_param->package.count = 0;
+				break;
+
+			default:
+
+				acpi_os_printf
+				    ("%s: Unsupported argument type: %u\n",
+				     pathname, arg_type);
+				break;
+			}
+
+			this_param++;
+		}
+
+		param_objects.count = arg_count;
+		param_objects.pointer = params;
+	}
+
+	ACPI_FREE(obj_info);
+	return_obj.pointer = NULL;
+	return_obj.length = ACPI_ALLOCATE_BUFFER;
+
+	/* Do the actual method execution */
+
+	acpi_gbl_method_executing = TRUE;
+
+	status = acpi_evaluate_object(node, NULL, &param_objects, &return_obj);
+
+	acpi_os_printf("%-32s returned %s\n",
+		       pathname, acpi_format_exception(status));
+	acpi_gbl_method_executing = FALSE;
+	ACPI_FREE(pathname);
+
+	/* Ignore status from method execution */
+
+	status = AE_OK;
+
+	/* Update count, check if we have executed enough methods */
+
+	info->count++;
+	if (info->count >= info->max_count) {
+		status = AE_CTRL_TERMINATE;
+	}
+
+	return (status);
+}
diff --git a/drivers/acpi/acpica/dbutils.c b/drivers/acpi/acpica/dbutils.c
new file mode 100644
index 000000000000..86790e080139
--- /dev/null
+++ b/drivers/acpi/acpica/dbutils.c
@@ -0,0 +1,457 @@
+/*******************************************************************************
+ *
+ * Module Name: dbutils - AML debugger utilities
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acdebug.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbutils")
+
+/* Local prototypes */
+#ifdef ACPI_OBSOLETE_FUNCTIONS
+acpi_status acpi_db_second_pass_parse(union acpi_parse_object *root);
+
+void acpi_db_dump_buffer(u32 address);
+#endif
+
+static char *gbl_hex_to_ascii = "0123456789ABCDEF";
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_match_argument
+ *
+ * PARAMETERS:  user_argument           - User command line
+ *              arguments               - Array of commands to match against
+ *
+ * RETURN:      Index into command array or ACPI_TYPE_NOT_FOUND if not found
+ *
+ * DESCRIPTION: Search command array for a command match
+ *
+ ******************************************************************************/
+
+acpi_object_type
+acpi_db_match_argument(char *user_argument,
+		       struct acpi_db_argument_info *arguments)
+{
+	u32 i;
+
+	if (!user_argument || user_argument[0] == 0) {
+		return (ACPI_TYPE_NOT_FOUND);
+	}
+
+	for (i = 0; arguments[i].name; i++) {
+		if (strstr(arguments[i].name, user_argument) ==
+		    arguments[i].name) {
+			return (i);
+		}
+	}
+
+	/* Argument not recognized */
+
+	return (ACPI_TYPE_NOT_FOUND);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_set_output_destination
+ *
+ * PARAMETERS:  output_flags        - Current flags word
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Set the current destination for debugger output. Also sets
+ *              the debug output level accordingly.
+ *
+ ******************************************************************************/
+
+void acpi_db_set_output_destination(u32 output_flags)
+{
+
+	acpi_gbl_db_output_flags = (u8)output_flags;
+
+	if ((output_flags & ACPI_DB_REDIRECTABLE_OUTPUT) &&
+	    acpi_gbl_db_output_to_file) {
+		acpi_dbg_level = acpi_gbl_db_debug_level;
+	} else {
+		acpi_dbg_level = acpi_gbl_db_console_debug_level;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_dump_external_object
+ *
+ * PARAMETERS:  obj_desc        - External ACPI object to dump
+ *              level           - Nesting level.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Dump the contents of an ACPI external object
+ *
+ ******************************************************************************/
+
+void acpi_db_dump_external_object(union acpi_object *obj_desc, u32 level)
+{
+	u32 i;
+
+	if (!obj_desc) {
+		acpi_os_printf("[Null Object]\n");
+		return;
+	}
+
+	for (i = 0; i < level; i++) {
+		acpi_os_printf(" ");
+	}
+
+	switch (obj_desc->type) {
+	case ACPI_TYPE_ANY:
+
+		acpi_os_printf("[Null Object] (Type=0)\n");
+		break;
+
+	case ACPI_TYPE_INTEGER:
+
+		acpi_os_printf("[Integer] = %8.8X%8.8X\n",
+			       ACPI_FORMAT_UINT64(obj_desc->integer.value));
+		break;
+
+	case ACPI_TYPE_STRING:
+
+		acpi_os_printf("[String] Length %.2X = ",
+			       obj_desc->string.length);
+		acpi_ut_print_string(obj_desc->string.pointer, ACPI_UINT8_MAX);
+		acpi_os_printf("\n");
+		break;
+
+	case ACPI_TYPE_BUFFER:
+
+		acpi_os_printf("[Buffer] Length %.2X = ",
+			       obj_desc->buffer.length);
+		if (obj_desc->buffer.length) {
+			if (obj_desc->buffer.length > 16) {
+				acpi_os_printf("\n");
+			}
+			acpi_ut_debug_dump_buffer(ACPI_CAST_PTR
+						  (u8,
+						   obj_desc->buffer.pointer),
+						  obj_desc->buffer.length,
+						  DB_BYTE_DISPLAY, _COMPONENT);
+		} else {
+			acpi_os_printf("\n");
+		}
+		break;
+
+	case ACPI_TYPE_PACKAGE:
+
+		acpi_os_printf("[Package] Contains %u Elements:\n",
+			       obj_desc->package.count);
+
+		for (i = 0; i < obj_desc->package.count; i++) {
+			acpi_db_dump_external_object(&obj_desc->package.
+						     elements[i], level + 1);
+		}
+		break;
+
+	case ACPI_TYPE_LOCAL_REFERENCE:
+
+		acpi_os_printf("[Object Reference] = ");
+		acpi_db_display_internal_object(obj_desc->reference.handle,
+						NULL);
+		break;
+
+	case ACPI_TYPE_PROCESSOR:
+
+		acpi_os_printf("[Processor]\n");
+		break;
+
+	case ACPI_TYPE_POWER:
+
+		acpi_os_printf("[Power Resource]\n");
+		break;
+
+	default:
+
+		acpi_os_printf("[Unknown Type] %X\n", obj_desc->type);
+		break;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_prep_namestring
+ *
+ * PARAMETERS:  name            - String to prepare
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Translate all forward slashes and dots to backslashes.
+ *
+ ******************************************************************************/
+
+void acpi_db_prep_namestring(char *name)
+{
+
+	if (!name) {
+		return;
+	}
+
+	acpi_ut_strupr(name);
+
+	/* Convert a leading forward slash to a backslash */
+
+	if (*name == '/') {
+		*name = '\\';
+	}
+
+	/* Ignore a leading backslash, this is the root prefix */
+
+	if (ACPI_IS_ROOT_PREFIX(*name)) {
+		name++;
+	}
+
+	/* Convert all slash path separators to dots */
+
+	while (*name) {
+		if ((*name == '/') || (*name == '\\')) {
+			*name = '.';
+		}
+
+		name++;
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_local_ns_lookup
+ *
+ * PARAMETERS:  name            - Name to lookup
+ *
+ * RETURN:      Pointer to a namespace node, null on failure
+ *
+ * DESCRIPTION: Lookup a name in the ACPI namespace
+ *
+ * Note: Currently begins search from the root. Could be enhanced to use
+ * the current prefix (scope) node as the search beginning point.
+ *
+ ******************************************************************************/
+
+struct acpi_namespace_node *acpi_db_local_ns_lookup(char *name)
+{
+	char *internal_path;
+	acpi_status status;
+	struct acpi_namespace_node *node = NULL;
+
+	acpi_db_prep_namestring(name);
+
+	/* Build an internal namestring */
+
+	status = acpi_ns_internalize_name(name, &internal_path);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Invalid namestring: %s\n", name);
+		return (NULL);
+	}
+
+	/*
+	 * Lookup the name.
+	 * (Uses root node as the search starting point)
+	 */
+	status = acpi_ns_lookup(NULL, internal_path, ACPI_TYPE_ANY,
+				ACPI_IMODE_EXECUTE,
+				ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE,
+				NULL, &node);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could not locate name: %s, %s\n",
+			       name, acpi_format_exception(status));
+	}
+
+	ACPI_FREE(internal_path);
+	return (node);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_uint32_to_hex_string
+ *
+ * PARAMETERS:  value           - The value to be converted to string
+ *              buffer          - Buffer for result (not less than 11 bytes)
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Convert the unsigned 32-bit value to the hexadecimal image
+ *
+ * NOTE: It is the caller's responsibility to ensure that the length of buffer
+ *       is sufficient.
+ *
+ ******************************************************************************/
+
+void acpi_db_uint32_to_hex_string(u32 value, char *buffer)
+{
+	int i;
+
+	if (value == 0) {
+		strcpy(buffer, "0");
+		return;
+	}
+
+	buffer[8] = '\0';
+
+	for (i = 7; i >= 0; i--) {
+		buffer[i] = gbl_hex_to_ascii[value & 0x0F];
+		value = value >> 4;
+	}
+}
+
+#ifdef ACPI_OBSOLETE_FUNCTIONS
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_second_pass_parse
+ *
+ * PARAMETERS:  root            - Root of the parse tree
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Second pass parse of the ACPI tables. We need to wait until
+ *              second pass to parse the control methods
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_second_pass_parse(union acpi_parse_object *root)
+{
+	union acpi_parse_object *op = root;
+	union acpi_parse_object *method;
+	union acpi_parse_object *search_op;
+	union acpi_parse_object *start_op;
+	acpi_status status = AE_OK;
+	u32 base_aml_offset;
+	struct acpi_walk_state *walk_state;
+
+	ACPI_FUNCTION_ENTRY();
+
+	acpi_os_printf("Pass two parse ....\n");
+
+	while (op) {
+		if (op->common.aml_opcode == AML_METHOD_OP) {
+			method = op;
+
+			/* Create a new walk state for the parse */
+
+			walk_state =
+			    acpi_ds_create_walk_state(0, NULL, NULL, NULL);
+			if (!walk_state) {
+				return (AE_NO_MEMORY);
+			}
+
+			/* Init the Walk State */
+
+			walk_state->parser_state.aml =
+			    walk_state->parser_state.aml_start =
+			    method->named.data;
+			walk_state->parser_state.aml_end =
+			    walk_state->parser_state.pkg_end =
+			    method->named.data + method->named.length;
+			walk_state->parser_state.start_scope = op;
+
+			walk_state->descending_callback =
+			    acpi_ds_load1_begin_op;
+			walk_state->ascending_callback = acpi_ds_load1_end_op;
+
+			/* Perform the AML parse */
+
+			status = acpi_ps_parse_aml(walk_state);
+
+			base_aml_offset =
+			    (method->common.value.arg)->common.aml_offset + 1;
+			start_op = (method->common.value.arg)->common.next;
+			search_op = start_op;
+
+			while (search_op) {
+				search_op->common.aml_offset += base_aml_offset;
+				search_op =
+				    acpi_ps_get_depth_next(start_op, search_op);
+			}
+		}
+
+		if (op->common.aml_opcode == AML_REGION_OP) {
+
+			/* TBD: [Investigate] this isn't quite the right thing to do! */
+			/*
+			 *
+			 * Method = (ACPI_DEFERRED_OP *) Op;
+			 * Status = acpi_ps_parse_aml (Op, Method->Body, Method->body_length);
+			 */
+		}
+
+		if (ACPI_FAILURE(status)) {
+			break;
+		}
+
+		op = acpi_ps_get_depth_next(root, op);
+	}
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_dump_buffer
+ *
+ * PARAMETERS:  address             - Pointer to the buffer
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Print a portion of a buffer
+ *
+ ******************************************************************************/
+
+void acpi_db_dump_buffer(u32 address)
+{
+
+	acpi_os_printf("\nLocation %X:\n", address);
+
+	acpi_dbg_level |= ACPI_LV_TABLES;
+	acpi_ut_debug_dump_buffer(ACPI_TO_POINTER(address), 64, DB_BYTE_DISPLAY,
+				  ACPI_UINT32_MAX);
+}
+#endif
diff --git a/drivers/acpi/acpica/dbxface.c b/drivers/acpi/acpica/dbxface.c
new file mode 100644
index 000000000000..342298a6e10f
--- /dev/null
+++ b/drivers/acpi/acpica/dbxface.c
@@ -0,0 +1,513 @@
+/*******************************************************************************
+ *
+ * Module Name: dbxface - AML Debugger external interfaces
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acdebug.h"
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbxface")
+
+/* Local prototypes */
+static acpi_status
+acpi_db_start_command(struct acpi_walk_state *walk_state,
+		      union acpi_parse_object *op);
+
+#ifdef ACPI_OBSOLETE_FUNCTIONS
+void acpi_db_method_end(struct acpi_walk_state *walk_state);
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_start_command
+ *
+ * PARAMETERS:  walk_state      - Current walk
+ *              op              - Current executing Op, from AML interpreter
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enter debugger command loop
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_start_command(struct acpi_walk_state *walk_state,
+		      union acpi_parse_object *op)
+{
+	acpi_status status;
+
+	/* TBD: [Investigate] are there namespace locking issues here? */
+
+	/* acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); */
+
+	/* Go into the command loop and await next user command */
+
+	acpi_gbl_method_executing = TRUE;
+	status = AE_CTRL_TRUE;
+	while (status == AE_CTRL_TRUE) {
+		if (acpi_gbl_debugger_configuration == DEBUGGER_MULTI_THREADED) {
+
+			/* Handshake with the front-end that gets user command lines */
+
+			acpi_os_release_mutex(acpi_gbl_db_command_complete);
+
+			status =
+			    acpi_os_acquire_mutex(acpi_gbl_db_command_ready,
+						  ACPI_WAIT_FOREVER);
+			if (ACPI_FAILURE(status)) {
+				return (status);
+			}
+		} else {
+			/* Single threaded, we must get a command line ourselves */
+
+			/* Force output to console until a command is entered */
+
+			acpi_db_set_output_destination(ACPI_DB_CONSOLE_OUTPUT);
+
+			/* Different prompt if method is executing */
+
+			if (!acpi_gbl_method_executing) {
+				acpi_os_printf("%1c ",
+					       ACPI_DEBUGGER_COMMAND_PROMPT);
+			} else {
+				acpi_os_printf("%1c ",
+					       ACPI_DEBUGGER_EXECUTE_PROMPT);
+			}
+
+			/* Get the user input line */
+
+			status = acpi_os_get_line(acpi_gbl_db_line_buf,
+						  ACPI_DB_LINE_BUFFER_SIZE,
+						  NULL);
+			if (ACPI_FAILURE(status)) {
+				ACPI_EXCEPTION((AE_INFO, status,
+						"While parsing command line"));
+				return (status);
+			}
+		}
+
+		status =
+		    acpi_db_command_dispatch(acpi_gbl_db_line_buf, walk_state,
+					     op);
+	}
+
+	/* acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); */
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_single_step
+ *
+ * PARAMETERS:  walk_state      - Current walk
+ *              op              - Current executing op (from aml interpreter)
+ *              opcode_class    - Class of the current AML Opcode
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Called just before execution of an AML opcode.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_db_single_step(struct acpi_walk_state * walk_state,
+		    union acpi_parse_object * op, u32 opcode_class)
+{
+	union acpi_parse_object *next;
+	acpi_status status = AE_OK;
+	u32 original_debug_level;
+	union acpi_parse_object *display_op;
+	union acpi_parse_object *parent_op;
+	u32 aml_offset;
+
+	ACPI_FUNCTION_ENTRY();
+
+#ifndef ACPI_APPLICATION
+	if (acpi_gbl_db_thread_id != acpi_os_get_thread_id()) {
+		return (AE_OK);
+	}
+#endif
+
+	/* Check the abort flag */
+
+	if (acpi_gbl_abort_method) {
+		acpi_gbl_abort_method = FALSE;
+		return (AE_ABORT_METHOD);
+	}
+
+	aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml,
+					walk_state->parser_state.aml_start);
+
+	/* Check for single-step breakpoint */
+
+	if (walk_state->method_breakpoint &&
+	    (walk_state->method_breakpoint <= aml_offset)) {
+
+		/* Check if the breakpoint has been reached or passed */
+		/* Hit the breakpoint, resume single step, reset breakpoint */
+
+		acpi_os_printf("***Break*** at AML offset %X\n", aml_offset);
+		acpi_gbl_cm_single_step = TRUE;
+		acpi_gbl_step_to_next_call = FALSE;
+		walk_state->method_breakpoint = 0;
+	}
+
+	/* Check for user breakpoint (Must be on exact Aml offset) */
+
+	else if (walk_state->user_breakpoint &&
+		 (walk_state->user_breakpoint == aml_offset)) {
+		acpi_os_printf("***UserBreakpoint*** at AML offset %X\n",
+			       aml_offset);
+		acpi_gbl_cm_single_step = TRUE;
+		acpi_gbl_step_to_next_call = FALSE;
+		walk_state->method_breakpoint = 0;
+	}
+
+	/*
+	 * Check if this is an opcode that we are interested in --
+	 * namely, opcodes that have arguments
+	 */
+	if (op->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
+		return (AE_OK);
+	}
+
+	switch (opcode_class) {
+	case AML_CLASS_UNKNOWN:
+	case AML_CLASS_ARGUMENT:	/* constants, literals, etc. do nothing */
+
+		return (AE_OK);
+
+	default:
+
+		/* All other opcodes -- continue */
+		break;
+	}
+
+	/*
+	 * Under certain debug conditions, display this opcode and its operands
+	 */
+	if ((acpi_gbl_db_output_to_file) ||
+	    (acpi_gbl_cm_single_step) || (acpi_dbg_level & ACPI_LV_PARSE)) {
+		if ((acpi_gbl_db_output_to_file) ||
+		    (acpi_dbg_level & ACPI_LV_PARSE)) {
+			acpi_os_printf
+			    ("\n[AmlDebug] Next AML Opcode to execute:\n");
+		}
+
+		/*
+		 * Display this op (and only this op - zero out the NEXT field
+		 * temporarily, and disable parser trace output for the duration of
+		 * the display because we don't want the extraneous debug output)
+		 */
+		original_debug_level = acpi_dbg_level;
+		acpi_dbg_level &= ~(ACPI_LV_PARSE | ACPI_LV_FUNCTIONS);
+		next = op->common.next;
+		op->common.next = NULL;
+
+		display_op = op;
+		parent_op = op->common.parent;
+		if (parent_op) {
+			if ((walk_state->control_state) &&
+			    (walk_state->control_state->common.state ==
+			     ACPI_CONTROL_PREDICATE_EXECUTING)) {
+				/*
+				 * We are executing the predicate of an IF or WHILE statement
+				 * Search upwards for the containing IF or WHILE so that the
+				 * entire predicate can be displayed.
+				 */
+				while (parent_op) {
+					if ((parent_op->common.aml_opcode ==
+					     AML_IF_OP)
+					    || (parent_op->common.aml_opcode ==
+						AML_WHILE_OP)) {
+						display_op = parent_op;
+						break;
+					}
+					parent_op = parent_op->common.parent;
+				}
+			} else {
+				while (parent_op) {
+					if ((parent_op->common.aml_opcode ==
+					     AML_IF_OP)
+					    || (parent_op->common.aml_opcode ==
+						AML_ELSE_OP)
+					    || (parent_op->common.aml_opcode ==
+						AML_SCOPE_OP)
+					    || (parent_op->common.aml_opcode ==
+						AML_METHOD_OP)
+					    || (parent_op->common.aml_opcode ==
+						AML_WHILE_OP)) {
+						break;
+					}
+					display_op = parent_op;
+					parent_op = parent_op->common.parent;
+				}
+			}
+		}
+
+		/* Now we can display it */
+
+#ifdef ACPI_DISASSEMBLER
+		acpi_dm_disassemble(walk_state, display_op, ACPI_UINT32_MAX);
+#endif
+
+		if ((op->common.aml_opcode == AML_IF_OP) ||
+		    (op->common.aml_opcode == AML_WHILE_OP)) {
+			if (walk_state->control_state->common.value) {
+				acpi_os_printf
+				    ("Predicate = [True], IF block was executed\n");
+			} else {
+				acpi_os_printf
+				    ("Predicate = [False], Skipping IF block\n");
+			}
+		} else if (op->common.aml_opcode == AML_ELSE_OP) {
+			acpi_os_printf
+			    ("Predicate = [False], ELSE block was executed\n");
+		}
+
+		/* Restore everything */
+
+		op->common.next = next;
+		acpi_os_printf("\n");
+		if ((acpi_gbl_db_output_to_file) ||
+		    (acpi_dbg_level & ACPI_LV_PARSE)) {
+			acpi_os_printf("\n");
+		}
+		acpi_dbg_level = original_debug_level;
+	}
+
+	/* If we are not single stepping, just continue executing the method */
+
+	if (!acpi_gbl_cm_single_step) {
+		return (AE_OK);
+	}
+
+	/*
+	 * If we are executing a step-to-call command,
+	 * Check if this is a method call.
+	 */
+	if (acpi_gbl_step_to_next_call) {
+		if (op->common.aml_opcode != AML_INT_METHODCALL_OP) {
+
+			/* Not a method call, just keep executing */
+
+			return (AE_OK);
+		}
+
+		/* Found a method call, stop executing */
+
+		acpi_gbl_step_to_next_call = FALSE;
+	}
+
+	/*
+	 * If the next opcode is a method call, we will "step over" it
+	 * by default.
+	 */
+	if (op->common.aml_opcode == AML_INT_METHODCALL_OP) {
+
+		/* Force no more single stepping while executing called method */
+
+		acpi_gbl_cm_single_step = FALSE;
+
+		/*
+		 * Set the breakpoint on/before the call, it will stop execution
+		 * as soon as we return
+		 */
+		walk_state->method_breakpoint = 1;	/* Must be non-zero! */
+	}
+
+	status = acpi_db_start_command(walk_state, op);
+
+	/* User commands complete, continue execution of the interrupted method */
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_initialize_debugger
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Init and start debugger
+ *
+ ******************************************************************************/
+
+acpi_status acpi_initialize_debugger(void)
+{
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(acpi_initialize_debugger);
+
+	/* Init globals */
+
+	acpi_gbl_db_buffer = NULL;
+	acpi_gbl_db_filename = NULL;
+	acpi_gbl_db_output_to_file = FALSE;
+
+	acpi_gbl_db_debug_level = ACPI_LV_VERBOSITY2;
+	acpi_gbl_db_console_debug_level = ACPI_NORMAL_DEFAULT | ACPI_LV_TABLES;
+	acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
+
+	acpi_gbl_db_opt_no_ini_methods = FALSE;
+
+	acpi_gbl_db_buffer = acpi_os_allocate(ACPI_DEBUG_BUFFER_SIZE);
+	if (!acpi_gbl_db_buffer) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+	memset(acpi_gbl_db_buffer, 0, ACPI_DEBUG_BUFFER_SIZE);
+
+	/* Initial scope is the root */
+
+	acpi_gbl_db_scope_buf[0] = AML_ROOT_PREFIX;
+	acpi_gbl_db_scope_buf[1] = 0;
+	acpi_gbl_db_scope_node = acpi_gbl_root_node;
+
+	/* Initialize user commands loop */
+
+	acpi_gbl_db_terminate_loop = FALSE;
+
+	/*
+	 * If configured for multi-thread support, the debug executor runs in
+	 * a separate thread so that the front end can be in another address
+	 * space, environment, or even another machine.
+	 */
+	if (acpi_gbl_debugger_configuration & DEBUGGER_MULTI_THREADED) {
+
+		/* These were created with one unit, grab it */
+
+		status = acpi_os_acquire_mutex(acpi_gbl_db_command_complete,
+					       ACPI_WAIT_FOREVER);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("Could not get debugger mutex\n");
+			return_ACPI_STATUS(status);
+		}
+
+		status = acpi_os_acquire_mutex(acpi_gbl_db_command_ready,
+					       ACPI_WAIT_FOREVER);
+		if (ACPI_FAILURE(status)) {
+			acpi_os_printf("Could not get debugger mutex\n");
+			return_ACPI_STATUS(status);
+		}
+
+		/* Create the debug execution thread to execute commands */
+
+		acpi_gbl_db_threads_terminated = FALSE;
+		status = acpi_os_execute(OSL_DEBUGGER_MAIN_THREAD,
+					 acpi_db_execute_thread, NULL);
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status,
+					"Could not start debugger thread"));
+			acpi_gbl_db_threads_terminated = TRUE;
+			return_ACPI_STATUS(status);
+		}
+	} else {
+		acpi_gbl_db_thread_id = acpi_os_get_thread_id();
+	}
+
+	return_ACPI_STATUS(AE_OK);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_initialize_debugger)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_terminate_debugger
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Stop debugger
+ *
+ ******************************************************************************/
+void acpi_terminate_debugger(void)
+{
+
+	/* Terminate the AML Debugger */
+
+	acpi_gbl_db_terminate_loop = TRUE;
+
+	if (acpi_gbl_debugger_configuration & DEBUGGER_MULTI_THREADED) {
+		acpi_os_release_mutex(acpi_gbl_db_command_ready);
+
+		/* Wait the AML Debugger threads */
+
+		while (!acpi_gbl_db_threads_terminated) {
+			acpi_os_sleep(100);
+		}
+	}
+
+	if (acpi_gbl_db_buffer) {
+		acpi_os_free(acpi_gbl_db_buffer);
+		acpi_gbl_db_buffer = NULL;
+	}
+
+	/* Ensure that debug output is now disabled */
+
+	acpi_gbl_db_output_flags = ACPI_DB_DISABLE_OUTPUT;
+}
+
+ACPI_EXPORT_SYMBOL(acpi_terminate_debugger)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_set_debugger_thread_id
+ *
+ * PARAMETERS:  thread_id       - Debugger thread ID
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Set debugger thread ID
+ *
+ ******************************************************************************/
+void acpi_set_debugger_thread_id(acpi_thread_id thread_id)
+{
+	acpi_gbl_db_thread_id = thread_id;
+}
+
+ACPI_EXPORT_SYMBOL(acpi_set_debugger_thread_id)
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 81f2d9e87fad..07d22bfbaa00 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -405,7 +405,7 @@ cleanup:
 }
 
 ACPI_EXPORT_SYMBOL(acpi_install_exception_handler)
-#endif				/*  ACPI_FUTURE_USAGE  */
+#endif
 
 #if (!ACPI_REDUCED_HARDWARE)
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c
index 075d654c837f..1e4c5b6dc0b0 100644
--- a/drivers/acpi/acpica/exconvrt.c
+++ b/drivers/acpi/acpica/exconvrt.c
@@ -618,6 +618,7 @@ acpi_ex_convert_to_target_type(acpi_object_type destination_type,
 		break;
 
 	case ARGI_TARGETREF:
+	case ARGI_STORE_TARGET:
 
 		switch (destination_type) {
 		case ACPI_TYPE_INTEGER:
diff --git a/drivers/acpi/acpica/exresolv.c b/drivers/acpi/acpica/exresolv.c
index 7b109128b035..a1afe1a1e7c2 100644
--- a/drivers/acpi/acpica/exresolv.c
+++ b/drivers/acpi/acpica/exresolv.c
@@ -209,7 +209,6 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
 					 * (i.e., dereference the package index)
 					 * Delete the ref object, increment the returned object
 					 */
-					acpi_ut_remove_reference(stack_desc);
 					acpi_ut_add_reference(obj_desc);
 					*stack_ptr = obj_desc;
 				} else {
diff --git a/drivers/acpi/acpica/exresop.c b/drivers/acpi/acpica/exresop.c
index d2964af9ad4d..424442d50b5e 100644
--- a/drivers/acpi/acpica/exresop.c
+++ b/drivers/acpi/acpica/exresop.c
@@ -307,6 +307,8 @@ acpi_ex_resolve_operands(u16 opcode,
 		case ARGI_TARGETREF:	/* Allows implicit conversion rules before store */
 		case ARGI_FIXED_TARGET:	/* No implicit conversion before store to target */
 		case ARGI_SIMPLE_TARGET:	/* Name, Local, or arg - no implicit conversion  */
+		case ARGI_STORE_TARGET:
+
 			/*
 			 * Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
 			 * A Namespace Node is OK as-is
diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c
index a7eee2400ce0..c076e9100d66 100644
--- a/drivers/acpi/acpica/exstore.c
+++ b/drivers/acpi/acpica/exstore.c
@@ -137,7 +137,7 @@ acpi_ex_store(union acpi_operand_object *source_desc,
 		/* Destination is not a Reference object */
 
 		ACPI_ERROR((AE_INFO,
-			    "Target is not a Reference or Constant object - %s [%p]",
+			    "Target is not a Reference or Constant object - [%s] %p",
 			    acpi_ut_get_object_type_name(dest_desc),
 			    dest_desc));
 
@@ -189,7 +189,7 @@ acpi_ex_store(union acpi_operand_object *source_desc,
 		 * displayed and otherwise has no effect -- see ACPI Specification
 		 */
 		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-				  "**** Write to Debug Object: Object %p %s ****:\n\n",
+				  "**** Write to Debug Object: Object %p [%s] ****:\n\n",
 				  source_desc,
 				  acpi_ut_get_object_type_name(source_desc)));
 
@@ -341,7 +341,7 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
 			/* All other types are invalid */
 
 			ACPI_ERROR((AE_INFO,
-				    "Source must be Integer/Buffer/String type, not %s",
+				    "Source must be type [Integer/Buffer/String], found [%s]",
 				    acpi_ut_get_object_type_name(source_desc)));
 			return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 		}
@@ -352,8 +352,9 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
 		break;
 
 	default:
-		ACPI_ERROR((AE_INFO, "Target is not a Package or BufferField"));
-		status = AE_AML_OPERAND_TYPE;
+		ACPI_ERROR((AE_INFO,
+			    "Target is not of type [Package/BufferField]"));
+		status = AE_AML_TARGET_TYPE;
 		break;
 	}
 
@@ -373,20 +374,20 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
  *
  * DESCRIPTION: Store the object to the named object.
  *
- *              The Assignment of an object to a named object is handled here
- *              The value passed in will replace the current value (if any)
- *              with the input value.
+ * The assignment of an object to a named object is handled here.
+ * The value passed in will replace the current value (if any)
+ * with the input value.
  *
- *              When storing into an object the data is converted to the
- *              target object type then stored in the object. This means
- *              that the target object type (for an initialized target) will
- *              not be changed by a store operation. A copy_object can change
- *              the target type, however.
+ * When storing into an object the data is converted to the
+ * target object type then stored in the object. This means
+ * that the target object type (for an initialized target) will
+ * not be changed by a store operation. A copy_object can change
+ * the target type, however.
  *
- *              The implicit_conversion flag is set to NO/FALSE only when
- *              storing to an arg_x -- as per the rules of the ACPI spec.
+ * The implicit_conversion flag is set to NO/FALSE only when
+ * storing to an arg_x -- as per the rules of the ACPI spec.
  *
- *              Assumes parameters are already validated.
+ * Assumes parameters are already validated.
  *
  ******************************************************************************/
 
@@ -408,11 +409,75 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
 	target_type = acpi_ns_get_type(node);
 	target_desc = acpi_ns_get_attached_object(node);
 
-	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p (%s) to node %p (%s)\n",
+	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p [%s] to node %p [%s]\n",
 			  source_desc,
 			  acpi_ut_get_object_type_name(source_desc), node,
 			  acpi_ut_get_type_name(target_type)));
 
+	/* Only limited target types possible for everything except copy_object */
+
+	if (walk_state->opcode != AML_COPY_OP) {
+		/*
+		 * Only copy_object allows all object types to be overwritten. For
+		 * target_ref(s), there are restrictions on the object types that
+		 * are allowed.
+		 *
+		 * Allowable operations/typing for Store:
+		 *
+		 * 1) Simple Store
+		 *      Integer     --> Integer (Named/Local/Arg)
+		 *      String      --> String  (Named/Local/Arg)
+		 *      Buffer      --> Buffer  (Named/Local/Arg)
+		 *      Package     --> Package (Named/Local/Arg)
+		 *
+		 * 2) Store with implicit conversion
+		 *      Integer     --> String or Buffer  (Named)
+		 *      String      --> Integer or Buffer (Named)
+		 *      Buffer      --> Integer or String (Named)
+		 */
+		switch (target_type) {
+		case ACPI_TYPE_PACKAGE:
+			/*
+			 * Here, can only store a package to an existing package.
+			 * Storing a package to a Local/Arg is OK, and handled
+			 * elsewhere.
+			 */
+			if (walk_state->opcode == AML_STORE_OP) {
+				if (source_desc->common.type !=
+				    ACPI_TYPE_PACKAGE) {
+					ACPI_ERROR((AE_INFO,
+						    "Cannot assign type [%s] to [Package] "
+						    "(source must be type Pkg)",
+						    acpi_ut_get_object_type_name
+						    (source_desc)));
+
+					return_ACPI_STATUS(AE_AML_TARGET_TYPE);
+				}
+				break;
+			}
+
+			/* Fallthrough */
+
+		case ACPI_TYPE_DEVICE:
+		case ACPI_TYPE_EVENT:
+		case ACPI_TYPE_MUTEX:
+		case ACPI_TYPE_REGION:
+		case ACPI_TYPE_POWER:
+		case ACPI_TYPE_PROCESSOR:
+		case ACPI_TYPE_THERMAL:
+
+			ACPI_ERROR((AE_INFO,
+				    "Target must be [Buffer/Integer/String/Reference], found [%s] (%4.4s)",
+				    acpi_ut_get_type_name(node->type),
+				    node->name.ascii));
+
+			return_ACPI_STATUS(AE_AML_TARGET_TYPE);
+
+		default:
+			break;
+		}
+	}
+
 	/*
 	 * Resolve the source object to an actual value
 	 * (If it is a reference object)
@@ -425,13 +490,13 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
 	/* Do the actual store operation */
 
 	switch (target_type) {
-	case ACPI_TYPE_INTEGER:
-	case ACPI_TYPE_STRING:
-	case ACPI_TYPE_BUFFER:
 		/*
 		 * The simple data types all support implicit source operand
 		 * conversion before the store.
 		 */
+	case ACPI_TYPE_INTEGER:
+	case ACPI_TYPE_STRING:
+	case ACPI_TYPE_BUFFER:
 
 		if ((walk_state->opcode == AML_COPY_OP) || !implicit_conversion) {
 			/*
@@ -467,7 +532,7 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
 						       new_desc->common.type);
 
 			ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-					  "Store %s into %s via Convert/Attach\n",
+					  "Store type [%s] into [%s] via Convert/Attach\n",
 					  acpi_ut_get_object_type_name
 					  (source_desc),
 					  acpi_ut_get_object_type_name
@@ -491,15 +556,12 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
 
 	default:
 		/*
-		 * No conversions for all other types. Directly store a copy of
-		 * the source object. This is the ACPI spec-defined behavior for
-		 * the copy_object operator.
+		 * copy_object operator: No conversions for all other types.
+		 * Instead, directly store a copy of the source object.
 		 *
-		 * NOTE: For the Store operator, this is a departure from the
-		 * ACPI spec, which states "If conversion is impossible, abort
-		 * the running control method". Instead, this code implements
-		 * "If conversion is impossible, treat the Store operation as
-		 * a CopyObject".
+		 * This is the ACPI spec-defined behavior for the copy_object
+		 * operator. (Note, for this default case, all normal
+		 * Store/Target operations exited above with an error).
 		 */
 		status = acpi_ex_store_direct_to_node(source_desc, node,
 						      walk_state);
diff --git a/drivers/acpi/acpica/exstoren.c b/drivers/acpi/acpica/exstoren.c
index 3101607b4efe..d1841defa669 100644
--- a/drivers/acpi/acpica/exstoren.c
+++ b/drivers/acpi/acpica/exstoren.c
@@ -122,9 +122,10 @@ acpi_ex_resolve_object(union acpi_operand_object **source_desc_ptr,
 			/* Conversion successful but still not a valid type */
 
 			ACPI_ERROR((AE_INFO,
-				    "Cannot assign type %s to %s (must be type Int/Str/Buf)",
+				    "Cannot assign type [%s] to [%s] (must be type Int/Str/Buf)",
 				    acpi_ut_get_object_type_name(source_desc),
 				    acpi_ut_get_type_name(target_type)));
+
 			status = AE_AML_OPERAND_TYPE;
 		}
 		break;
@@ -275,7 +276,7 @@ acpi_ex_store_object_to_object(union acpi_operand_object *source_desc,
 		/*
 		 * All other types come here.
 		 */
-		ACPI_WARNING((AE_INFO, "Store into type %s not implemented",
+		ACPI_WARNING((AE_INFO, "Store into type [%s] not implemented",
 			      acpi_ut_get_object_type_name(dest_desc)));
 
 		status = AE_NOT_IMPLEMENTED;
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index 0f1daba640e7..37aa5c45ca4b 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -60,7 +60,6 @@ acpi_ns_dump_one_device(acpi_handle obj_handle,
 
 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
 
-#ifdef	ACPI_FUTURE_USAGE
 static acpi_status
 acpi_ns_dump_one_object_path(acpi_handle obj_handle,
 			     u32 level, void *context, void **return_value);
@@ -68,7 +67,6 @@ acpi_ns_dump_one_object_path(acpi_handle obj_handle,
 static acpi_status
 acpi_ns_get_max_depth(acpi_handle obj_handle,
 		      u32 level, void *context, void **return_value);
-#endif				/* ACPI_FUTURE_USAGE */
 
 /*******************************************************************************
  *
@@ -625,7 +623,6 @@ cleanup:
 	return (AE_OK);
 }
 
-#ifdef ACPI_FUTURE_USAGE
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ns_dump_objects
@@ -680,9 +677,7 @@ acpi_ns_dump_objects(acpi_object_type type,
 
 	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 }
-#endif				/* ACPI_FUTURE_USAGE */
 
-#ifdef	ACPI_FUTURE_USAGE
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ns_dump_one_object_path, acpi_ns_get_max_depth
@@ -810,7 +805,6 @@ acpi_ns_dump_object_paths(acpi_object_type type,
 
 	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 }
-#endif				/* ACPI_FUTURE_USAGE */
 
 /*******************************************************************************
  *
diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index 0eb54315b4be..0c20980bbcf3 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -226,7 +226,7 @@ acpi_ns_check_object_type(struct acpi_evaluate_info *info,
 {
 	union acpi_operand_object *return_object = *return_object_ptr;
 	acpi_status status = AE_OK;
-	char type_buffer[48];	/* Room for 5 types */
+	char type_buffer[96];	/* Room for 10 types */
 
 	/* A Namespace node should not get here, but make sure */
 
diff --git a/drivers/acpi/acpica/pstree.c b/drivers/acpi/acpica/pstree.c
index 89984f30addc..cf2f2faf4f92 100644
--- a/drivers/acpi/acpica/pstree.c
+++ b/drivers/acpi/acpica/pstree.c
@@ -183,7 +183,6 @@ acpi_ps_append_arg(union acpi_parse_object *op, union acpi_parse_object *arg)
 	}
 }
 
-#ifdef ACPI_FUTURE_USAGE
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ps_get_depth_next
@@ -317,4 +316,3 @@ union acpi_parse_object *acpi_ps_get_child(union acpi_parse_object *op)
 	return (child);
 }
 #endif
-#endif				/*  ACPI_FUTURE_USAGE  */
diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c
index 183cc1efbc51..71d2877cd2ce 100644
--- a/drivers/acpi/acpica/psutils.c
+++ b/drivers/acpi/acpica/psutils.c
@@ -205,7 +205,6 @@ u8 acpi_ps_is_leading_char(u32 c)
 /*
  * Get op's name (4-byte name segment) or 0 if unnamed
  */
-#ifdef ACPI_FUTURE_USAGE
 u32 acpi_ps_get_name(union acpi_parse_object * op)
 {
 
@@ -219,7 +218,6 @@ u32 acpi_ps_get_name(union acpi_parse_object * op)
 
 	return (op->named.name);
 }
-#endif				/*  ACPI_FUTURE_USAGE  */
 
 /*
  * Set op's name
diff --git a/drivers/acpi/acpica/rsdump.c b/drivers/acpi/acpica/rsdump.c
index c428bb33204e..2a09288e7c57 100644
--- a/drivers/acpi/acpica/rsdump.c
+++ b/drivers/acpi/acpica/rsdump.c
@@ -51,7 +51,6 @@ ACPI_MODULE_NAME("rsdump")
 /*
  * All functions in this module are used by the AML Debugger only
  */
-#if defined(ACPI_DEBUGGER)
 /* Local prototypes */
 static void acpi_rs_out_string(char *title, char *value);
 
@@ -565,5 +564,3 @@ static void acpi_rs_dump_word_list(u16 length, u16 *data)
 		acpi_os_printf("%25s%2.2X : %4.4X\n", "Word", i, data[i]);
 	}
 }
-
-#endif
diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c
index 52b024df0052..9486992edbb8 100644
--- a/drivers/acpi/acpica/rsutils.c
+++ b/drivers/acpi/acpica/rsutils.c
@@ -564,7 +564,6 @@ acpi_rs_get_crs_method_data(struct acpi_namespace_node *node,
  *
  ******************************************************************************/
 
-#ifdef ACPI_FUTURE_USAGE
 acpi_status
 acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
 			    struct acpi_buffer *ret_buffer)
@@ -596,7 +595,6 @@ acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
 	acpi_ut_remove_reference(obj_desc);
 	return_ACPI_STATUS(status);
 }
-#endif				/*  ACPI_FUTURE_USAGE  */
 
 /*******************************************************************************
  *
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
index de51f836ef68..1e8cd5723326 100644
--- a/drivers/acpi/acpica/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -220,7 +220,7 @@ acpi_get_current_resources(acpi_handle device_handle,
 }
 
 ACPI_EXPORT_SYMBOL(acpi_get_current_resources)
-#ifdef ACPI_FUTURE_USAGE
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_get_possible_resources
@@ -262,7 +262,7 @@ acpi_get_possible_resources(acpi_handle device_handle,
 }
 
 ACPI_EXPORT_SYMBOL(acpi_get_possible_resources)
-#endif				/*  ACPI_FUTURE_USAGE  */
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_set_current_resources
diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c
index 988e23b7795c..ecaaaffc0788 100644
--- a/drivers/acpi/acpica/utdecode.c
+++ b/drivers/acpi/acpica/utdecode.c
@@ -232,12 +232,27 @@ char *acpi_ut_get_type_name(acpi_object_type type)
 
 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
 {
+	ACPI_FUNCTION_TRACE(ut_get_object_type_name);
 
 	if (!obj_desc) {
-		return ("[NULL Object Descriptor]");
+		ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Null Object Descriptor\n"));
+		return_PTR("[NULL Object Descriptor]");
 	}
 
-	return (acpi_ut_get_type_name(obj_desc->common.type));
+	/* These descriptor types share a common area */
+
+	if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) &&
+	    (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_NAMED)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+				  "Invalid object descriptor type: 0x%2.2X [%s] (%p)\n",
+				  ACPI_GET_DESCRIPTOR_TYPE(obj_desc),
+				  acpi_ut_get_descriptor_name(obj_desc),
+				  obj_desc));
+
+		return_PTR("Invalid object");
+	}
+
+	return_PTR(acpi_ut_get_type_name(obj_desc->common.type));
 }
 
 /*******************************************************************************
@@ -407,8 +422,6 @@ static char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = {
 	"ACPI_MTX_Events",
 	"ACPI_MTX_Caches",
 	"ACPI_MTX_Memory",
-	"ACPI_MTX_CommandComplete",
-	"ACPI_MTX_CommandReady"
 };
 
 char *acpi_ut_get_mutex_name(u32 mutex_id)
diff --git a/drivers/acpi/acpica/utfileio.c b/drivers/acpi/acpica/utfileio.c
index 75a94f52b4be..d435b7b7eb94 100644
--- a/drivers/acpi/acpica/utfileio.c
+++ b/drivers/acpi/acpica/utfileio.c
@@ -45,6 +45,7 @@
 #include "accommon.h"
 #include "actables.h"
 #include "acapps.h"
+#include "errno.h"
 
 #ifdef ACPI_ASL_COMPILER
 #include "aslcompiler.h"
@@ -301,6 +302,11 @@ acpi_ut_read_table_from_file(char *filename, struct acpi_table_header ** table)
 	file = fopen(filename, "rb");
 	if (!file) {
 		perror("Could not open input file");
+
+		if (errno == ENOENT) {
+			return (AE_NOT_EXIST);
+		}
+
 		return (status);
 	}
 
diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c
index 28ab3a1d5ec1..ccd0745f011e 100644
--- a/drivers/acpi/acpica/utinit.c
+++ b/drivers/acpi/acpica/utinit.c
@@ -241,8 +241,6 @@ acpi_status acpi_ut_init_globals(void)
 	acpi_gbl_disable_mem_tracking = FALSE;
 #endif
 
-	ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = FALSE);
-
 	return_ACPI_STATUS(AE_OK);
 }
 
@@ -284,6 +282,19 @@ void acpi_ut_subsystem_shutdown(void)
 {
 	ACPI_FUNCTION_TRACE(ut_subsystem_shutdown);
 
+	/* Just exit if subsystem is already shutdown */
+
+	if (acpi_gbl_shutdown) {
+		ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
+		return_VOID;
+	}
+
+	/* Subsystem appears active, go ahead and shut it down */
+
+	acpi_gbl_shutdown = TRUE;
+	acpi_gbl_startup_flags = 0;
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
+
 #ifndef ACPI_ASL_COMPILER
 
 	/* Close the acpi_event Handling */
diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c
index 37b8b58fcd56..ce406e39b669 100644
--- a/drivers/acpi/acpica/utmutex.c
+++ b/drivers/acpi/acpica/utmutex.c
@@ -108,6 +108,21 @@ acpi_status acpi_ut_mutex_initialize(void)
 	/* Create the reader/writer lock for namespace access */
 
 	status = acpi_ut_create_rw_lock(&acpi_gbl_namespace_rw_lock);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+#ifdef ACPI_DEBUGGER
+
+	/* Debugger Support */
+
+	status = acpi_os_create_mutex(&acpi_gbl_db_command_ready);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	status = acpi_os_create_mutex(&acpi_gbl_db_command_complete);
+#endif
+
 	return_ACPI_STATUS(status);
 }
 
@@ -147,6 +162,12 @@ void acpi_ut_mutex_terminate(void)
 	/* Delete the reader/writer lock */
 
 	acpi_ut_delete_rw_lock(&acpi_gbl_namespace_rw_lock);
+
+#ifdef ACPI_DEBUGGER
+	acpi_os_delete_mutex(acpi_gbl_db_command_ready);
+	acpi_os_delete_mutex(acpi_gbl_db_command_complete);
+#endif
+
 	return_VOID;
 }
 
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index 4f332815db00..f9c8f9ce1f0f 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -67,23 +67,6 @@ acpi_status __init acpi_terminate(void)
 
 	ACPI_FUNCTION_TRACE(acpi_terminate);
 
-	/* Just exit if subsystem is already shutdown */
-
-	if (acpi_gbl_shutdown) {
-		ACPI_ERROR((AE_INFO, "ACPI Subsystem is already terminated"));
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	/* Subsystem appears active, go ahead and shut it down */
-
-	acpi_gbl_shutdown = TRUE;
-	acpi_gbl_startup_flags = 0;
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
-
-	/* Terminate the AML Debugger if present */
-
-	ACPI_DEBUGGER_EXEC(acpi_gbl_db_terminate_threads = TRUE);
-
 	/* Shutdown and free all resources */
 
 	acpi_ut_subsystem_shutdown();
@@ -270,7 +253,7 @@ acpi_install_initialization_handler(acpi_init_handler handler, u32 function)
 }
 
 ACPI_EXPORT_SYMBOL(acpi_install_initialization_handler)
-#endif				/*  ACPI_FUTURE_USAGE  */
+#endif
 
 /*****************************************************************************
  *
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
new file mode 100644
index 000000000000..3c083d2cc434
--- /dev/null
+++ b/drivers/acpi/cppc_acpi.c
@@ -0,0 +1,733 @@
+/*
+ * CPPC (Collaborative Processor Performance Control) methods used by CPUfreq drivers.
+ *
+ * (C) Copyright 2014, 2015 Linaro Ltd.
+ * Author: Ashwin Chaugule <ashwin.chaugule@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ *
+ * CPPC describes a few methods for controlling CPU performance using
+ * information from a per CPU table called CPC. This table is described in
+ * the ACPI v5.0+ specification. The table consists of a list of
+ * registers which may be memory mapped or hardware registers and also may
+ * include some static integer values.
+ *
+ * CPU performance is on an abstract continuous scale as against a discretized
+ * P-state scale which is tied to CPU frequency only. In brief, the basic
+ * operation involves:
+ *
+ * - OS makes a CPU performance request. (Can provide min and max bounds)
+ *
+ * - Platform (such as BMC) is free to optimize request within requested bounds
+ *   depending on power/thermal budgets etc.
+ *
+ * - Platform conveys its decision back to OS
+ *
+ * The communication between OS and platform occurs through another medium
+ * called (PCC) Platform Communication Channel. This is a generic mailbox like
+ * mechanism which includes doorbell semantics to indicate register updates.
+ * See drivers/mailbox/pcc.c for details on PCC.
+ *
+ * Finer details about the PCC and CPPC spec are available in the ACPI v5.1 and
+ * above specifications.
+ */
+
+#define pr_fmt(fmt)	"ACPI CPPC: " fmt
+
+#include <linux/cpufreq.h>
+#include <linux/delay.h>
+
+#include <acpi/cppc_acpi.h>
+/*
+ * Lock to provide mutually exclusive access to the PCC
+ * channel. e.g. When the remote updates the shared region
+ * with new data, the reader needs to be protected from
+ * other CPUs activity on the same channel.
+ */
+static DEFINE_SPINLOCK(pcc_lock);
+
+/*
+ * The cpc_desc structure contains the ACPI register details
+ * as described in the per CPU _CPC tables. The details
+ * include the type of register (e.g. PCC, System IO, FFH etc.)
+ * and destination addresses which lets us READ/WRITE CPU performance
+ * information using the appropriate I/O methods.
+ */
+static DEFINE_PER_CPU(struct cpc_desc *, cpc_desc_ptr);
+
+/* This layer handles all the PCC specifics for CPPC. */
+static struct mbox_chan *pcc_channel;
+static void __iomem *pcc_comm_addr;
+static u64 comm_base_addr;
+static int pcc_subspace_idx = -1;
+static u16 pcc_cmd_delay;
+static bool pcc_channel_acquired;
+
+/*
+ * Arbitrary Retries in case the remote processor is slow to respond
+ * to PCC commands.
+ */
+#define NUM_RETRIES 500
+
+static int send_pcc_cmd(u16 cmd)
+{
+	int retries, result = -EIO;
+	struct acpi_pcct_hw_reduced *pcct_ss = pcc_channel->con_priv;
+	struct acpi_pcct_shared_memory *generic_comm_base =
+		(struct acpi_pcct_shared_memory *) pcc_comm_addr;
+	u32 cmd_latency = pcct_ss->latency;
+
+	/* Min time OS should wait before sending next command. */
+	udelay(pcc_cmd_delay);
+
+	/* Write to the shared comm region. */
+	writew(cmd, &generic_comm_base->command);
+
+	/* Flip CMD COMPLETE bit */
+	writew(0, &generic_comm_base->status);
+
+	/* Ring doorbell */
+	result = mbox_send_message(pcc_channel, &cmd);
+	if (result < 0) {
+		pr_err("Err sending PCC mbox message. cmd:%d, ret:%d\n",
+				cmd, result);
+		return result;
+	}
+
+	/* Wait for a nominal time to let platform process command. */
+	udelay(cmd_latency);
+
+	/* Retry in case the remote processor was too slow to catch up. */
+	for (retries = NUM_RETRIES; retries > 0; retries--) {
+		if (readw_relaxed(&generic_comm_base->status) & PCC_CMD_COMPLETE) {
+			result = 0;
+			break;
+		}
+	}
+
+	mbox_client_txdone(pcc_channel, result);
+	return result;
+}
+
+static void cppc_chan_tx_done(struct mbox_client *cl, void *msg, int ret)
+{
+	if (ret)
+		pr_debug("TX did not complete: CMD sent:%x, ret:%d\n",
+				*(u16 *)msg, ret);
+	else
+		pr_debug("TX completed. CMD sent:%x, ret:%d\n",
+				*(u16 *)msg, ret);
+}
+
+struct mbox_client cppc_mbox_cl = {
+	.tx_done = cppc_chan_tx_done,
+	.knows_txdone = true,
+};
+
+static int acpi_get_psd(struct cpc_desc *cpc_ptr, acpi_handle handle)
+{
+	int result = -EFAULT;
+	acpi_status status = AE_OK;
+	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+	struct acpi_buffer format = {sizeof("NNNNN"), "NNNNN"};
+	struct acpi_buffer state = {0, NULL};
+	union acpi_object  *psd = NULL;
+	struct acpi_psd_package *pdomain;
+
+	status = acpi_evaluate_object_typed(handle, "_PSD", NULL, &buffer,
+			ACPI_TYPE_PACKAGE);
+	if (ACPI_FAILURE(status))
+		return -ENODEV;
+
+	psd = buffer.pointer;
+	if (!psd || psd->package.count != 1) {
+		pr_debug("Invalid _PSD data\n");
+		goto end;
+	}
+
+	pdomain = &(cpc_ptr->domain_info);
+
+	state.length = sizeof(struct acpi_psd_package);
+	state.pointer = pdomain;
+
+	status = acpi_extract_package(&(psd->package.elements[0]),
+		&format, &state);
+	if (ACPI_FAILURE(status)) {
+		pr_debug("Invalid _PSD data for CPU:%d\n", cpc_ptr->cpu_id);
+		goto end;
+	}
+
+	if (pdomain->num_entries != ACPI_PSD_REV0_ENTRIES) {
+		pr_debug("Unknown _PSD:num_entries for CPU:%d\n", cpc_ptr->cpu_id);
+		goto end;
+	}
+
+	if (pdomain->revision != ACPI_PSD_REV0_REVISION) {
+		pr_debug("Unknown _PSD:revision for CPU: %d\n", cpc_ptr->cpu_id);
+		goto end;
+	}
+
+	if (pdomain->coord_type != DOMAIN_COORD_TYPE_SW_ALL &&
+	    pdomain->coord_type != DOMAIN_COORD_TYPE_SW_ANY &&
+	    pdomain->coord_type != DOMAIN_COORD_TYPE_HW_ALL) {
+		pr_debug("Invalid _PSD:coord_type for CPU:%d\n", cpc_ptr->cpu_id);
+		goto end;
+	}
+
+	result = 0;
+end:
+	kfree(buffer.pointer);
+	return result;
+}
+
+/**
+ * acpi_get_psd_map - Map the CPUs in a common freq domain.
+ * @all_cpu_data: Ptrs to CPU specific CPPC data including PSD info.
+ *
+ *	Return: 0 for success or negative value for err.
+ */
+int acpi_get_psd_map(struct cpudata **all_cpu_data)
+{
+	int count_target;
+	int retval = 0;
+	unsigned int i, j;
+	cpumask_var_t covered_cpus;
+	struct cpudata *pr, *match_pr;
+	struct acpi_psd_package *pdomain;
+	struct acpi_psd_package *match_pdomain;
+	struct cpc_desc *cpc_ptr, *match_cpc_ptr;
+
+	if (!zalloc_cpumask_var(&covered_cpus, GFP_KERNEL))
+		return -ENOMEM;
+
+	/*
+	 * Now that we have _PSD data from all CPUs, lets setup P-state
+	 * domain info.
+	 */
+	for_each_possible_cpu(i) {
+		pr = all_cpu_data[i];
+		if (!pr)
+			continue;
+
+		if (cpumask_test_cpu(i, covered_cpus))
+			continue;
+
+		cpc_ptr = per_cpu(cpc_desc_ptr, i);
+		if (!cpc_ptr)
+			continue;
+
+		pdomain = &(cpc_ptr->domain_info);
+		cpumask_set_cpu(i, pr->shared_cpu_map);
+		cpumask_set_cpu(i, covered_cpus);
+		if (pdomain->num_processors <= 1)
+			continue;
+
+		/* Validate the Domain info */
+		count_target = pdomain->num_processors;
+		if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ALL)
+			pr->shared_type = CPUFREQ_SHARED_TYPE_ALL;
+		else if (pdomain->coord_type == DOMAIN_COORD_TYPE_HW_ALL)
+			pr->shared_type = CPUFREQ_SHARED_TYPE_HW;
+		else if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ANY)
+			pr->shared_type = CPUFREQ_SHARED_TYPE_ANY;
+
+		for_each_possible_cpu(j) {
+			if (i == j)
+				continue;
+
+			match_cpc_ptr = per_cpu(cpc_desc_ptr, j);
+			if (!match_cpc_ptr)
+				continue;
+
+			match_pdomain = &(match_cpc_ptr->domain_info);
+			if (match_pdomain->domain != pdomain->domain)
+				continue;
+
+			/* Here i and j are in the same domain */
+			if (match_pdomain->num_processors != count_target) {
+				retval = -EFAULT;
+				goto err_ret;
+			}
+
+			if (pdomain->coord_type != match_pdomain->coord_type) {
+				retval = -EFAULT;
+				goto err_ret;
+			}
+
+			cpumask_set_cpu(j, covered_cpus);
+			cpumask_set_cpu(j, pr->shared_cpu_map);
+		}
+
+		for_each_possible_cpu(j) {
+			if (i == j)
+				continue;
+
+			match_pr = all_cpu_data[j];
+			if (!match_pr)
+				continue;
+
+			match_cpc_ptr = per_cpu(cpc_desc_ptr, j);
+			if (!match_cpc_ptr)
+				continue;
+
+			match_pdomain = &(match_cpc_ptr->domain_info);
+			if (match_pdomain->domain != pdomain->domain)
+				continue;
+
+			match_pr->shared_type = pr->shared_type;
+			cpumask_copy(match_pr->shared_cpu_map,
+				     pr->shared_cpu_map);
+		}
+	}
+
+err_ret:
+	for_each_possible_cpu(i) {
+		pr = all_cpu_data[i];
+		if (!pr)
+			continue;
+
+		/* Assume no coordination on any error parsing domain info */
+		if (retval) {
+			cpumask_clear(pr->shared_cpu_map);
+			cpumask_set_cpu(i, pr->shared_cpu_map);
+			pr->shared_type = CPUFREQ_SHARED_TYPE_ALL;
+		}
+	}
+
+	free_cpumask_var(covered_cpus);
+	return retval;
+}
+EXPORT_SYMBOL_GPL(acpi_get_psd_map);
+
+static int register_pcc_channel(int pcc_subspace_idx)
+{
+	struct acpi_pcct_subspace *cppc_ss;
+	unsigned int len;
+
+	if (pcc_subspace_idx >= 0) {
+		pcc_channel = pcc_mbox_request_channel(&cppc_mbox_cl,
+				pcc_subspace_idx);
+
+		if (IS_ERR(pcc_channel)) {
+			pr_err("Failed to find PCC communication channel\n");
+			return -ENODEV;
+		}
+
+		/*
+		 * The PCC mailbox controller driver should
+		 * have parsed the PCCT (global table of all
+		 * PCC channels) and stored pointers to the
+		 * subspace communication region in con_priv.
+		 */
+		cppc_ss = pcc_channel->con_priv;
+
+		if (!cppc_ss) {
+			pr_err("No PCC subspace found for CPPC\n");
+			return -ENODEV;
+		}
+
+		/*
+		 * This is the shared communication region
+		 * for the OS and Platform to communicate over.
+		 */
+		comm_base_addr = cppc_ss->base_address;
+		len = cppc_ss->length;
+		pcc_cmd_delay = cppc_ss->min_turnaround_time;
+
+		pcc_comm_addr = acpi_os_ioremap(comm_base_addr, len);
+		if (!pcc_comm_addr) {
+			pr_err("Failed to ioremap PCC comm region mem\n");
+			return -ENOMEM;
+		}
+
+		/* Set flag so that we dont come here for each CPU. */
+		pcc_channel_acquired = true;
+	}
+
+	return 0;
+}
+
+/*
+ * An example CPC table looks like the following.
+ *
+ *	Name(_CPC, Package()
+ *			{
+ *			17,
+ *			NumEntries
+ *			1,
+ *			// Revision
+ *			ResourceTemplate(){Register(PCC, 32, 0, 0x120, 2)},
+ *			// Highest Performance
+ *			ResourceTemplate(){Register(PCC, 32, 0, 0x124, 2)},
+ *			// Nominal Performance
+ *			ResourceTemplate(){Register(PCC, 32, 0, 0x128, 2)},
+ *			// Lowest Nonlinear Performance
+ *			ResourceTemplate(){Register(PCC, 32, 0, 0x12C, 2)},
+ *			// Lowest Performance
+ *			ResourceTemplate(){Register(PCC, 32, 0, 0x130, 2)},
+ *			// Guaranteed Performance Register
+ *			ResourceTemplate(){Register(PCC, 32, 0, 0x110, 2)},
+ *			// Desired Performance Register
+ *			ResourceTemplate(){Register(SystemMemory, 0, 0, 0, 0)},
+ *			..
+ *			..
+ *			..
+ *
+ *		}
+ * Each Register() encodes how to access that specific register.
+ * e.g. a sample PCC entry has the following encoding:
+ *
+ *	Register (
+ *		PCC,
+ *		AddressSpaceKeyword
+ *		8,
+ *		//RegisterBitWidth
+ *		8,
+ *		//RegisterBitOffset
+ *		0x30,
+ *		//RegisterAddress
+ *		9
+ *		//AccessSize (subspace ID)
+ *		0
+ *		)
+ *	}
+ */
+
+/**
+ * acpi_cppc_processor_probe - Search for per CPU _CPC objects.
+ * @pr: Ptr to acpi_processor containing this CPUs logical Id.
+ *
+ *	Return: 0 for success or negative value for err.
+ */
+int acpi_cppc_processor_probe(struct acpi_processor *pr)
+{
+	struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
+	union acpi_object *out_obj, *cpc_obj;
+	struct cpc_desc *cpc_ptr;
+	struct cpc_reg *gas_t;
+	acpi_handle handle = pr->handle;
+	unsigned int num_ent, i, cpc_rev;
+	acpi_status status;
+	int ret = -EFAULT;
+
+	/* Parse the ACPI _CPC table for this cpu. */
+	status = acpi_evaluate_object_typed(handle, "_CPC", NULL, &output,
+			ACPI_TYPE_PACKAGE);
+	if (ACPI_FAILURE(status)) {
+		ret = -ENODEV;
+		goto out_buf_free;
+	}
+
+	out_obj = (union acpi_object *) output.pointer;
+
+	cpc_ptr = kzalloc(sizeof(struct cpc_desc), GFP_KERNEL);
+	if (!cpc_ptr) {
+		ret = -ENOMEM;
+		goto out_buf_free;
+	}
+
+	/* First entry is NumEntries. */
+	cpc_obj = &out_obj->package.elements[0];
+	if (cpc_obj->type == ACPI_TYPE_INTEGER)	{
+		num_ent = cpc_obj->integer.value;
+	} else {
+		pr_debug("Unexpected entry type(%d) for NumEntries\n",
+				cpc_obj->type);
+		goto out_free;
+	}
+
+	/* Only support CPPCv2. Bail otherwise. */
+	if (num_ent != CPPC_NUM_ENT) {
+		pr_debug("Firmware exports %d entries. Expected: %d\n",
+				num_ent, CPPC_NUM_ENT);
+		goto out_free;
+	}
+
+	/* Second entry should be revision. */
+	cpc_obj = &out_obj->package.elements[1];
+	if (cpc_obj->type == ACPI_TYPE_INTEGER)	{
+		cpc_rev = cpc_obj->integer.value;
+	} else {
+		pr_debug("Unexpected entry type(%d) for Revision\n",
+				cpc_obj->type);
+		goto out_free;
+	}
+
+	if (cpc_rev != CPPC_REV) {
+		pr_debug("Firmware exports revision:%d. Expected:%d\n",
+				cpc_rev, CPPC_REV);
+		goto out_free;
+	}
+
+	/* Iterate through remaining entries in _CPC */
+	for (i = 2; i < num_ent; i++) {
+		cpc_obj = &out_obj->package.elements[i];
+
+		if (cpc_obj->type == ACPI_TYPE_INTEGER)	{
+			cpc_ptr->cpc_regs[i-2].type = ACPI_TYPE_INTEGER;
+			cpc_ptr->cpc_regs[i-2].cpc_entry.int_value = cpc_obj->integer.value;
+		} else if (cpc_obj->type == ACPI_TYPE_BUFFER) {
+			gas_t = (struct cpc_reg *)
+				cpc_obj->buffer.pointer;
+
+			/*
+			 * The PCC Subspace index is encoded inside
+			 * the CPC table entries. The same PCC index
+			 * will be used for all the PCC entries,
+			 * so extract it only once.
+			 */
+			if (gas_t->space_id == ACPI_ADR_SPACE_PLATFORM_COMM) {
+				if (pcc_subspace_idx < 0)
+					pcc_subspace_idx = gas_t->access_width;
+				else if (pcc_subspace_idx != gas_t->access_width) {
+					pr_debug("Mismatched PCC ids.\n");
+					goto out_free;
+				}
+			} else if (gas_t->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) {
+				/* Support only PCC and SYS MEM type regs */
+				pr_debug("Unsupported register type: %d\n", gas_t->space_id);
+				goto out_free;
+			}
+
+			cpc_ptr->cpc_regs[i-2].type = ACPI_TYPE_BUFFER;
+			memcpy(&cpc_ptr->cpc_regs[i-2].cpc_entry.reg, gas_t, sizeof(*gas_t));
+		} else {
+			pr_debug("Err in entry:%d in CPC table of CPU:%d \n", i, pr->id);
+			goto out_free;
+		}
+	}
+	/* Store CPU Logical ID */
+	cpc_ptr->cpu_id = pr->id;
+
+	/* Plug it into this CPUs CPC descriptor. */
+	per_cpu(cpc_desc_ptr, pr->id) = cpc_ptr;
+
+	/* Parse PSD data for this CPU */
+	ret = acpi_get_psd(cpc_ptr, handle);
+	if (ret)
+		goto out_free;
+
+	/* Register PCC channel once for all CPUs. */
+	if (!pcc_channel_acquired) {
+		ret = register_pcc_channel(pcc_subspace_idx);
+		if (ret)
+			goto out_free;
+	}
+
+	/* Everything looks okay */
+	pr_debug("Parsed CPC struct for CPU: %d\n", pr->id);
+
+	kfree(output.pointer);
+	return 0;
+
+out_free:
+	kfree(cpc_ptr);
+
+out_buf_free:
+	kfree(output.pointer);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(acpi_cppc_processor_probe);
+
+/**
+ * acpi_cppc_processor_exit - Cleanup CPC structs.
+ * @pr: Ptr to acpi_processor containing this CPUs logical Id.
+ *
+ * Return: Void
+ */
+void acpi_cppc_processor_exit(struct acpi_processor *pr)
+{
+	struct cpc_desc *cpc_ptr;
+	cpc_ptr = per_cpu(cpc_desc_ptr, pr->id);
+	kfree(cpc_ptr);
+}
+EXPORT_SYMBOL_GPL(acpi_cppc_processor_exit);
+
+static u64 get_phys_addr(struct cpc_reg *reg)
+{
+	/* PCC communication addr space begins at byte offset 0x8. */
+	if (reg->space_id == ACPI_ADR_SPACE_PLATFORM_COMM)
+		return (u64)comm_base_addr + 0x8 + reg->address;
+	else
+		return reg->address;
+}
+
+static void cpc_read(struct cpc_reg *reg, u64 *val)
+{
+	u64 addr = get_phys_addr(reg);
+
+	acpi_os_read_memory((acpi_physical_address)addr,
+			val, reg->bit_width);
+}
+
+static void cpc_write(struct cpc_reg *reg, u64 val)
+{
+	u64 addr = get_phys_addr(reg);
+
+	acpi_os_write_memory((acpi_physical_address)addr,
+			val, reg->bit_width);
+}
+
+/**
+ * cppc_get_perf_caps - Get a CPUs performance capabilities.
+ * @cpunum: CPU from which to get capabilities info.
+ * @perf_caps: ptr to cppc_perf_caps. See cppc_acpi.h
+ *
+ * Return: 0 for success with perf_caps populated else -ERRNO.
+ */
+int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps)
+{
+	struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpunum);
+	struct cpc_register_resource *highest_reg, *lowest_reg, *ref_perf,
+								 *nom_perf;
+	u64 high, low, ref, nom;
+	int ret = 0;
+
+	if (!cpc_desc) {
+		pr_debug("No CPC descriptor for CPU:%d\n", cpunum);
+		return -ENODEV;
+	}
+
+	highest_reg = &cpc_desc->cpc_regs[HIGHEST_PERF];
+	lowest_reg = &cpc_desc->cpc_regs[LOWEST_PERF];
+	ref_perf = &cpc_desc->cpc_regs[REFERENCE_PERF];
+	nom_perf = &cpc_desc->cpc_regs[NOMINAL_PERF];
+
+	spin_lock(&pcc_lock);
+
+	/* Are any of the regs PCC ?*/
+	if ((highest_reg->cpc_entry.reg.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) ||
+			(lowest_reg->cpc_entry.reg.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) ||
+			(ref_perf->cpc_entry.reg.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) ||
+			(nom_perf->cpc_entry.reg.space_id == ACPI_ADR_SPACE_PLATFORM_COMM)) {
+		/* Ring doorbell once to update PCC subspace */
+		if (send_pcc_cmd(CMD_READ)) {
+			ret = -EIO;
+			goto out_err;
+		}
+	}
+
+	cpc_read(&highest_reg->cpc_entry.reg, &high);
+	perf_caps->highest_perf = high;
+
+	cpc_read(&lowest_reg->cpc_entry.reg, &low);
+	perf_caps->lowest_perf = low;
+
+	cpc_read(&ref_perf->cpc_entry.reg, &ref);
+	perf_caps->reference_perf = ref;
+
+	cpc_read(&nom_perf->cpc_entry.reg, &nom);
+	perf_caps->nominal_perf = nom;
+
+	if (!ref)
+		perf_caps->reference_perf = perf_caps->nominal_perf;
+
+	if (!high || !low || !nom)
+		ret = -EFAULT;
+
+out_err:
+	spin_unlock(&pcc_lock);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(cppc_get_perf_caps);
+
+/**
+ * cppc_get_perf_ctrs - Read a CPUs performance feedback counters.
+ * @cpunum: CPU from which to read counters.
+ * @perf_fb_ctrs: ptr to cppc_perf_fb_ctrs. See cppc_acpi.h
+ *
+ * Return: 0 for success with perf_fb_ctrs populated else -ERRNO.
+ */
+int cppc_get_perf_ctrs(int cpunum, struct cppc_perf_fb_ctrs *perf_fb_ctrs)
+{
+	struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpunum);
+	struct cpc_register_resource *delivered_reg, *reference_reg;
+	u64 delivered, reference;
+	int ret = 0;
+
+	if (!cpc_desc) {
+		pr_debug("No CPC descriptor for CPU:%d\n", cpunum);
+		return -ENODEV;
+	}
+
+	delivered_reg = &cpc_desc->cpc_regs[DELIVERED_CTR];
+	reference_reg = &cpc_desc->cpc_regs[REFERENCE_CTR];
+
+	spin_lock(&pcc_lock);
+
+	/* Are any of the regs PCC ?*/
+	if ((delivered_reg->cpc_entry.reg.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) ||
+			(reference_reg->cpc_entry.reg.space_id == ACPI_ADR_SPACE_PLATFORM_COMM)) {
+		/* Ring doorbell once to update PCC subspace */
+		if (send_pcc_cmd(CMD_READ)) {
+			ret = -EIO;
+			goto out_err;
+		}
+	}
+
+	cpc_read(&delivered_reg->cpc_entry.reg, &delivered);
+	cpc_read(&reference_reg->cpc_entry.reg, &reference);
+
+	if (!delivered || !reference) {
+		ret = -EFAULT;
+		goto out_err;
+	}
+
+	perf_fb_ctrs->delivered = delivered;
+	perf_fb_ctrs->reference = reference;
+
+	perf_fb_ctrs->delivered -= perf_fb_ctrs->prev_delivered;
+	perf_fb_ctrs->reference -= perf_fb_ctrs->prev_reference;
+
+	perf_fb_ctrs->prev_delivered = delivered;
+	perf_fb_ctrs->prev_reference = reference;
+
+out_err:
+	spin_unlock(&pcc_lock);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(cppc_get_perf_ctrs);
+
+/**
+ * cppc_set_perf - Set a CPUs performance controls.
+ * @cpu: CPU for which to set performance controls.
+ * @perf_ctrls: ptr to cppc_perf_ctrls. See cppc_acpi.h
+ *
+ * Return: 0 for success, -ERRNO otherwise.
+ */
+int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls)
+{
+	struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpu);
+	struct cpc_register_resource *desired_reg;
+	int ret = 0;
+
+	if (!cpc_desc) {
+		pr_debug("No CPC descriptor for CPU:%d\n", cpu);
+		return -ENODEV;
+	}
+
+	desired_reg = &cpc_desc->cpc_regs[DESIRED_PERF];
+
+	spin_lock(&pcc_lock);
+
+	/*
+	 * Skip writing MIN/MAX until Linux knows how to come up with
+	 * useful values.
+	 */
+	cpc_write(&desired_reg->cpc_entry.reg, perf_ctrls->desired_perf);
+
+	/* Is this a PCC reg ?*/
+	if (desired_reg->cpc_entry.reg.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) {
+		/* Ring doorbell so Remote can get our perf request. */
+		if (send_pcc_cmd(CMD_WRITE))
+			ret = -EIO;
+	}
+
+	spin_unlock(&pcc_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(cppc_set_perf);
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 4806b7f856c4..08a02cdc737c 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -963,23 +963,6 @@ int acpi_subsys_prepare(struct device *dev)
 EXPORT_SYMBOL_GPL(acpi_subsys_prepare);
 
 /**
- * acpi_subsys_complete - Finalize device's resume during system resume.
- * @dev: Device to handle.
- */
-void acpi_subsys_complete(struct device *dev)
-{
-	pm_generic_complete(dev);
-	/*
-	 * If the device had been runtime-suspended before the system went into
-	 * the sleep state it is going out of and it has never been resumed till
-	 * now, resume it in case the firmware powered it up.
-	 */
-	if (dev->power.direct_complete)
-		pm_request_resume(dev);
-}
-EXPORT_SYMBOL_GPL(acpi_subsys_complete);
-
-/**
  * acpi_subsys_suspend - Run the device driver's suspend callback.
  * @dev: Device to handle.
  *
@@ -1047,7 +1030,7 @@ static struct dev_pm_domain acpi_general_pm_domain = {
 		.runtime_resume = acpi_subsys_runtime_resume,
 #ifdef CONFIG_PM_SLEEP
 		.prepare = acpi_subsys_prepare,
-		.complete = acpi_subsys_complete,
+		.complete = pm_complete_with_resume_check,
 		.suspend = acpi_subsys_suspend,
 		.suspend_late = acpi_subsys_suspend_late,
 		.resume_early = acpi_subsys_resume_early,
diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
index 4ab4582e586b..707cf6213bc2 100644
--- a/drivers/acpi/device_sysfs.c
+++ b/drivers/acpi/device_sysfs.c
@@ -26,6 +26,106 @@
 
 #include "internal.h"
 
+static ssize_t acpi_object_path(acpi_handle handle, char *buf)
+{
+	struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
+	int result;
+
+	result = acpi_get_name(handle, ACPI_FULL_PATHNAME, &path);
+	if (result)
+		return result;
+
+	result = sprintf(buf, "%s\n", (char*)path.pointer);
+	kfree(path.pointer);
+	return result;
+}
+
+struct acpi_data_node_attr {
+	struct attribute attr;
+	ssize_t (*show)(struct acpi_data_node *, char *);
+	ssize_t (*store)(struct acpi_data_node *, const char *, size_t count);
+};
+
+#define DATA_NODE_ATTR(_name)			\
+	static struct acpi_data_node_attr data_node_##_name =	\
+		__ATTR(_name, 0444, data_node_show_##_name, NULL)
+
+static ssize_t data_node_show_path(struct acpi_data_node *dn, char *buf)
+{
+	return acpi_object_path(dn->handle, buf);
+}
+
+DATA_NODE_ATTR(path);
+
+static struct attribute *acpi_data_node_default_attrs[] = {
+	&data_node_path.attr,
+	NULL
+};
+
+#define to_data_node(k) container_of(k, struct acpi_data_node, kobj)
+#define to_attr(a) container_of(a, struct acpi_data_node_attr, attr)
+
+static ssize_t acpi_data_node_attr_show(struct kobject *kobj,
+					struct attribute *attr, char *buf)
+{
+	struct acpi_data_node *dn = to_data_node(kobj);
+	struct acpi_data_node_attr *dn_attr = to_attr(attr);
+
+	return dn_attr->show ? dn_attr->show(dn, buf) : -ENXIO;
+}
+
+static const struct sysfs_ops acpi_data_node_sysfs_ops = {
+	.show	= acpi_data_node_attr_show,
+};
+
+static void acpi_data_node_release(struct kobject *kobj)
+{
+	struct acpi_data_node *dn = to_data_node(kobj);
+	complete(&dn->kobj_done);
+}
+
+static struct kobj_type acpi_data_node_ktype = {
+	.sysfs_ops = &acpi_data_node_sysfs_ops,
+	.default_attrs = acpi_data_node_default_attrs,
+	.release = acpi_data_node_release,
+};
+
+static void acpi_expose_nondev_subnodes(struct kobject *kobj,
+					struct acpi_device_data *data)
+{
+	struct list_head *list = &data->subnodes;
+	struct acpi_data_node *dn;
+
+	if (list_empty(list))
+		return;
+
+	list_for_each_entry(dn, list, sibling) {
+		int ret;
+
+		init_completion(&dn->kobj_done);
+		ret = kobject_init_and_add(&dn->kobj, &acpi_data_node_ktype,
+					   kobj, dn->name);
+		if (ret)
+			acpi_handle_err(dn->handle, "Failed to expose (%d)\n", ret);
+		else
+			acpi_expose_nondev_subnodes(&dn->kobj, &dn->data);
+	}
+}
+
+static void acpi_hide_nondev_subnodes(struct acpi_device_data *data)
+{
+	struct list_head *list = &data->subnodes;
+	struct acpi_data_node *dn;
+
+	if (list_empty(list))
+		return;
+
+	list_for_each_entry_reverse(dn, list, sibling) {
+		acpi_hide_nondev_subnodes(&dn->data);
+		kobject_put(&dn->kobj);
+	}
+}
+
 /**
  * create_pnp_modalias - Create hid/cid(s) string for modalias and uevent
  * @acpi_dev: ACPI device object.
@@ -323,20 +423,12 @@ static ssize_t acpi_device_adr_show(struct device *dev,
 }
 static DEVICE_ATTR(adr, 0444, acpi_device_adr_show, NULL);
 
-static ssize_t
-acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) {
+static ssize_t acpi_device_path_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
 	struct acpi_device *acpi_dev = to_acpi_device(dev);
-	struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
-	int result;
-
-	result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
-	if (result)
-		goto end;
 
-	result = sprintf(buf, "%s\n", (char*)path.pointer);
-	kfree(path.pointer);
-end:
-	return result;
+	return acpi_object_path(acpi_dev->handle, buf);
 }
 static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
 
@@ -475,6 +567,8 @@ int acpi_device_setup_files(struct acpi_device *dev)
 						    &dev_attr_real_power_state);
 	}
 
+	acpi_expose_nondev_subnodes(&dev->dev.kobj, &dev->data);
+
 end:
 	return result;
 }
@@ -485,6 +579,8 @@ end:
  */
 void acpi_device_remove_files(struct acpi_device *dev)
 {
+	acpi_hide_nondev_subnodes(&dev->data);
+
 	if (dev->flags.power_manageable) {
 		device_remove_file(&dev->dev, &dev_attr_power_state);
 		if (dev->power.flags.power_resources)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 42c66b64c12c..f61a7c834540 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -441,17 +441,31 @@ static void acpi_ec_complete_query(struct acpi_ec *ec)
 
 static bool acpi_ec_guard_event(struct acpi_ec *ec)
 {
+	bool guarded = true;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ec->lock, flags);
+	/*
+	 * If firmware SCI_EVT clearing timing is "event", we actually
+	 * don't know when the SCI_EVT will be cleared by firmware after
+	 * evaluating _Qxx, so we need to re-check SCI_EVT after waiting an
+	 * acceptable period.
+	 *
+	 * The guarding period begins when EC_FLAGS_QUERY_PENDING is
+	 * flagged, which means SCI_EVT check has just been performed.
+	 * But if the current transaction is ACPI_EC_COMMAND_QUERY, the
+	 * guarding should have already been performed (via
+	 * EC_FLAGS_QUERY_GUARDING) and should not be applied so that the
+	 * ACPI_EC_COMMAND_QUERY transaction can be transitioned into
+	 * ACPI_EC_COMMAND_POLL state immediately.
+	 */
 	if (ec_event_clearing == ACPI_EC_EVT_TIMING_STATUS ||
 	    ec_event_clearing == ACPI_EC_EVT_TIMING_QUERY ||
 	    !test_bit(EC_FLAGS_QUERY_PENDING, &ec->flags) ||
 	    (ec->curr && ec->curr->command == ACPI_EC_COMMAND_QUERY))
-		return false;
-
-	/*
-	 * Postpone the query submission to allow the firmware to proceed,
-	 * we shouldn't check SCI_EVT before the firmware reflagging it.
-	 */
-	return true;
+		guarded = false;
+	spin_unlock_irqrestore(&ec->lock, flags);
+	return guarded;
 }
 
 static int ec_transaction_polled(struct acpi_ec *ec)
@@ -597,6 +611,7 @@ static int ec_guard(struct acpi_ec *ec)
 	unsigned long guard = usecs_to_jiffies(ec_polling_guard);
 	unsigned long timeout = ec->timestamp + guard;
 
+	/* Ensure guarding period before polling EC status */
 	do {
 		if (ec_busy_polling) {
 			/* Perform busy polling */
@@ -606,11 +621,13 @@ static int ec_guard(struct acpi_ec *ec)
 		} else {
 			/*
 			 * Perform wait polling
-			 *
-			 * For SCI_EVT clearing timing of "event",
-			 * performing guarding before re-checking the
-			 * SCI_EVT. Otherwise, such guarding is not needed
-			 * due to the old practices.
+			 * 1. Wait the transaction to be completed by the
+			 *    GPE handler after the transaction enters
+			 *    ACPI_EC_COMMAND_POLL state.
+			 * 2. A special guarding logic is also required
+			 *    for event clearing mode "event" before the
+			 *    transaction enters ACPI_EC_COMMAND_POLL
+			 *    state.
 			 */
 			if (!ec_transaction_polled(ec) &&
 			    !acpi_ec_guard_event(ec))
@@ -620,7 +637,6 @@ static int ec_guard(struct acpi_ec *ec)
 					       guard))
 				return 0;
 		}
-		/* Guard the register accesses for the polling modes */
 	} while (time_before(jiffies, timeout));
 	return -ETIME;
 }
@@ -929,6 +945,23 @@ acpi_ec_get_query_handler(struct acpi_ec_query_handler *handler)
 	return handler;
 }
 
+static struct acpi_ec_query_handler *
+acpi_ec_get_query_handler_by_value(struct acpi_ec *ec, u8 value)
+{
+	struct acpi_ec_query_handler *handler;
+	bool found = false;
+
+	mutex_lock(&ec->mutex);
+	list_for_each_entry(handler, &ec->list, node) {
+		if (value == handler->query_bit) {
+			found = true;
+			break;
+		}
+	}
+	mutex_unlock(&ec->mutex);
+	return found ? acpi_ec_get_query_handler(handler) : NULL;
+}
+
 static void acpi_ec_query_handler_release(struct kref *kref)
 {
 	struct acpi_ec_query_handler *handler =
@@ -964,14 +997,15 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
 }
 EXPORT_SYMBOL_GPL(acpi_ec_add_query_handler);
 
-void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
+static void acpi_ec_remove_query_handlers(struct acpi_ec *ec,
+					  bool remove_all, u8 query_bit)
 {
 	struct acpi_ec_query_handler *handler, *tmp;
 	LIST_HEAD(free_list);
 
 	mutex_lock(&ec->mutex);
 	list_for_each_entry_safe(handler, tmp, &ec->list, node) {
-		if (query_bit == handler->query_bit) {
+		if (remove_all || query_bit == handler->query_bit) {
 			list_del_init(&handler->node);
 			list_add(&handler->node, &free_list);
 		}
@@ -980,6 +1014,11 @@ void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
 	list_for_each_entry_safe(handler, tmp, &free_list, node)
 		acpi_ec_put_query_handler(handler);
 }
+
+void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
+{
+	acpi_ec_remove_query_handlers(ec, false, query_bit);
+}
 EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler);
 
 static struct acpi_ec_query *acpi_ec_create_query(u8 *pval)
@@ -1025,7 +1064,6 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
 {
 	u8 value = 0;
 	int result;
-	struct acpi_ec_query_handler *handler;
 	struct acpi_ec_query *q;
 
 	q = acpi_ec_create_query(&value);
@@ -1043,25 +1081,26 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
 	if (result)
 		goto err_exit;
 
-	mutex_lock(&ec->mutex);
-	result = -ENODATA;
-	list_for_each_entry(handler, &ec->list, node) {
-		if (value == handler->query_bit) {
-			result = 0;
-			q->handler = acpi_ec_get_query_handler(handler);
-			ec_dbg_evt("Query(0x%02x) scheduled",
-				   q->handler->query_bit);
-			/*
-			 * It is reported that _Qxx are evaluated in a
-			 * parallel way on Windows:
-			 * https://bugzilla.kernel.org/show_bug.cgi?id=94411
-			 */
-			if (!schedule_work(&q->work))
-				result = -EBUSY;
-			break;
-		}
+	q->handler = acpi_ec_get_query_handler_by_value(ec, value);
+	if (!q->handler) {
+		result = -ENODATA;
+		goto err_exit;
+	}
+
+	/*
+	 * It is reported that _Qxx are evaluated in a parallel way on
+	 * Windows:
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=94411
+	 *
+	 * Put this log entry before schedule_work() in order to make
+	 * it appearing before any other log entries occurred during the
+	 * work queue execution.
+	 */
+	ec_dbg_evt("Query(0x%02x) scheduled", value);
+	if (!schedule_work(&q->work)) {
+		ec_dbg_evt("Query(0x%02x) overlapped", value);
+		result = -EBUSY;
 	}
-	mutex_unlock(&ec->mutex);
 
 err_exit:
 	if (result && q)
@@ -1354,19 +1393,13 @@ static int acpi_ec_add(struct acpi_device *device)
 static int acpi_ec_remove(struct acpi_device *device)
 {
 	struct acpi_ec *ec;
-	struct acpi_ec_query_handler *handler, *tmp;
 
 	if (!device)
 		return -EINVAL;
 
 	ec = acpi_driver_data(device);
 	ec_remove_handlers(ec);
-	mutex_lock(&ec->mutex);
-	list_for_each_entry_safe(handler, tmp, &ec->list, node) {
-		list_del(&handler->node);
-		kfree(handler);
-	}
-	mutex_unlock(&ec->mutex);
+	acpi_ec_remove_query_handlers(ec, true, 0);
 	release_region(ec->data_addr, 1);
 	release_region(ec->command_addr, 1);
 	device->driver_data = NULL;
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index b9657af751d1..1470ae4f98c0 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -351,13 +351,12 @@ static int acpi_platform_notify_remove(struct device *dev)
 	return 0;
 }
 
-int __init init_acpi_device_notify(void)
+void __init init_acpi_device_notify(void)
 {
 	if (platform_notify || platform_notify_remove) {
 		printk(KERN_ERR PREFIX "Can't use platform_notify\n");
-		return 0;
+		return;
 	}
 	platform_notify = acpi_platform_notify;
 	platform_notify_remove = acpi_platform_notify_remove;
-	return 0;
 }
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 9e426210c2a8..c31787bef2d3 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -21,7 +21,7 @@
 #define PREFIX "ACPI: "
 
 acpi_status acpi_os_initialize1(void);
-int init_acpi_device_notify(void);
+void init_acpi_device_notify(void);
 int acpi_scan_init(void);
 void acpi_pci_root_init(void);
 void acpi_pci_link_init(void);
@@ -179,13 +179,13 @@ static inline int acpi_sleep_init(void) { return -ENXIO; }
 #endif
 
 #ifdef CONFIG_ACPI_SLEEP
-int acpi_sleep_proc_init(void);
+void acpi_sleep_proc_init(void);
 int suspend_nvs_alloc(void);
 void suspend_nvs_free(void);
 int suspend_nvs_save(void);
 void suspend_nvs_restore(void);
 #else
-static inline int acpi_sleep_proc_init(void) { return 0; }
+static inline void acpi_sleep_proc_init(void) {}
 static inline int suspend_nvs_alloc(void) { return 0; }
 static inline void suspend_nvs_free(void) {}
 static inline int suspend_nvs_save(void) { return 0; }
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c
index c1b8d03e262e..bc18aa213bb1 100644
--- a/drivers/acpi/nfit.c
+++ b/drivers/acpi/nfit.c
@@ -706,7 +706,7 @@ static ssize_t flags_show(struct device *dev,
 		flags & ACPI_NFIT_MEM_SAVE_FAILED ? "save_fail " : "",
 		flags & ACPI_NFIT_MEM_RESTORE_FAILED ? "restore_fail " : "",
 		flags & ACPI_NFIT_MEM_FLUSH_FAILED ? "flush_fail " : "",
-		flags & ACPI_NFIT_MEM_ARMED ? "not_armed " : "",
+		flags & ACPI_NFIT_MEM_NOT_ARMED ? "not_armed " : "",
 		flags & ACPI_NFIT_MEM_HEALTH_OBSERVED ? "smart_event " : "");
 }
 static DEVICE_ATTR_RO(flags);
@@ -815,7 +815,7 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
 			flags |= NDD_ALIASING;
 
 		mem_flags = __to_nfit_memdev(nfit_mem)->flags;
-		if (mem_flags & ACPI_NFIT_MEM_ARMED)
+		if (mem_flags & ACPI_NFIT_MEM_NOT_ARMED)
 			flags |= NDD_UNARMED;
 
 		rc = acpi_nfit_add_dimm(acpi_desc, nfit_mem, device_handle);
@@ -839,7 +839,7 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)
 		  mem_flags & ACPI_NFIT_MEM_SAVE_FAILED ? " save_fail" : "",
 		  mem_flags & ACPI_NFIT_MEM_RESTORE_FAILED ? " restore_fail":"",
 		  mem_flags & ACPI_NFIT_MEM_FLUSH_FAILED ? " flush_fail" : "",
-		  mem_flags & ACPI_NFIT_MEM_ARMED ? " not_armed" : "");
+		  mem_flags & ACPI_NFIT_MEM_NOT_ARMED ? " not_armed" : "");
 
 	}
 
diff --git a/drivers/acpi/nfit.h b/drivers/acpi/nfit.h
index 7e740156b9c2..329a1eba0c16 100644
--- a/drivers/acpi/nfit.h
+++ b/drivers/acpi/nfit.h
@@ -24,7 +24,7 @@
 #define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
 #define ACPI_NFIT_MEM_FAILED_MASK (ACPI_NFIT_MEM_SAVE_FAILED \
 		| ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
-		| ACPI_NFIT_MEM_ARMED)
+		| ACPI_NFIT_MEM_NOT_ARMED)
 
 enum nfit_uuids {
 	NFIT_SPA_VOLATILE,
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 739a4a6b3b9b..3935745ac78b 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -66,8 +66,6 @@ struct acpi_os_dpc {
 /* stuff for debugger support */
 int acpi_in_debugger;
 EXPORT_SYMBOL(acpi_in_debugger);
-
-extern char line_buf[80];
 #endif				/*ENABLE_DEBUGGER */
 
 static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl,
@@ -81,6 +79,7 @@ static struct workqueue_struct *kacpid_wq;
 static struct workqueue_struct *kacpi_notify_wq;
 static struct workqueue_struct *kacpi_hotplug_wq;
 static bool acpi_os_initialized;
+unsigned int acpi_sci_irq = INVALID_ACPI_IRQ;
 
 /*
  * This list of permanent mappings is for memory that may be accessed from
@@ -856,17 +855,19 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler,
 		acpi_irq_handler = NULL;
 		return AE_NOT_ACQUIRED;
 	}
+	acpi_sci_irq = irq;
 
 	return AE_OK;
 }
 
-acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler)
+acpi_status acpi_os_remove_interrupt_handler(u32 gsi, acpi_osd_handler handler)
 {
-	if (irq != acpi_gbl_FADT.sci_interrupt)
+	if (gsi != acpi_gbl_FADT.sci_interrupt || !acpi_sci_irq_valid())
 		return AE_BAD_PARAMETER;
 
-	free_irq(irq, acpi_irq);
+	free_irq(acpi_sci_irq, acpi_irq);
 	acpi_irq_handler = NULL;
+	acpi_sci_irq = INVALID_ACPI_IRQ;
 
 	return AE_OK;
 }
@@ -1180,8 +1181,8 @@ void acpi_os_wait_events_complete(void)
 	 * Make sure the GPE handler or the fixed event handler is not used
 	 * on another CPU after removal.
 	 */
-	if (acpi_irq_handler)
-		synchronize_hardirq(acpi_gbl_FADT.sci_interrupt);
+	if (acpi_sci_irq_valid())
+		synchronize_hardirq(acpi_sci_irq);
 	flush_workqueue(kacpid_wq);
 	flush_workqueue(kacpi_notify_wq);
 }
@@ -1345,15 +1346,13 @@ acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
 	return AE_OK;
 }
 
-#ifdef ACPI_FUTURE_USAGE
-u32 acpi_os_get_line(char *buffer)
+acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read)
 {
-
 #ifdef ENABLE_DEBUGGER
 	if (acpi_in_debugger) {
 		u32 chars;
 
-		kdb_read(buffer, sizeof(line_buf));
+		kdb_read(buffer, buffer_length);
 
 		/* remove the CR kdb includes */
 		chars = strlen(buffer) - 1;
@@ -1361,9 +1360,8 @@ u32 acpi_os_get_line(char *buffer)
 	}
 #endif
 
-	return 0;
+	return AE_OK;
 }
-#endif				/*  ACPI_FUTURE_USAGE  */
 
 acpi_status acpi_os_signal(u32 function, void *info)
 {
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 393706a5261b..850d7bf0c873 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -652,6 +652,210 @@ static void acpi_pci_root_remove(struct acpi_device *device)
 	kfree(root);
 }
 
+/*
+ * Following code to support acpi_pci_root_create() is copied from
+ * arch/x86/pci/acpi.c and modified so it could be reused by x86, IA64
+ * and ARM64.
+ */
+static void acpi_pci_root_validate_resources(struct device *dev,
+					     struct list_head *resources,
+					     unsigned long type)
+{
+	LIST_HEAD(list);
+	struct resource *res1, *res2, *root = NULL;
+	struct resource_entry *tmp, *entry, *entry2;
+
+	BUG_ON((type & (IORESOURCE_MEM | IORESOURCE_IO)) == 0);
+	root = (type & IORESOURCE_MEM) ? &iomem_resource : &ioport_resource;
+
+	list_splice_init(resources, &list);
+	resource_list_for_each_entry_safe(entry, tmp, &list) {
+		bool free = false;
+		resource_size_t end;
+
+		res1 = entry->res;
+		if (!(res1->flags & type))
+			goto next;
+
+		/* Exclude non-addressable range or non-addressable portion */
+		end = min(res1->end, root->end);
+		if (end <= res1->start) {
+			dev_info(dev, "host bridge window %pR (ignored, not CPU addressable)\n",
+				 res1);
+			free = true;
+			goto next;
+		} else if (res1->end != end) {
+			dev_info(dev, "host bridge window %pR ([%#llx-%#llx] ignored, not CPU addressable)\n",
+				 res1, (unsigned long long)end + 1,
+				 (unsigned long long)res1->end);
+			res1->end = end;
+		}
+
+		resource_list_for_each_entry(entry2, resources) {
+			res2 = entry2->res;
+			if (!(res2->flags & type))
+				continue;
+
+			/*
+			 * I don't like throwing away windows because then
+			 * our resources no longer match the ACPI _CRS, but
+			 * the kernel resource tree doesn't allow overlaps.
+			 */
+			if (resource_overlaps(res1, res2)) {
+				res2->start = min(res1->start, res2->start);
+				res2->end = max(res1->end, res2->end);
+				dev_info(dev, "host bridge window expanded to %pR; %pR ignored\n",
+					 res2, res1);
+				free = true;
+				goto next;
+			}
+		}
+
+next:
+		resource_list_del(entry);
+		if (free)
+			resource_list_free_entry(entry);
+		else
+			resource_list_add_tail(entry, resources);
+	}
+}
+
+int acpi_pci_probe_root_resources(struct acpi_pci_root_info *info)
+{
+	int ret;
+	struct list_head *list = &info->resources;
+	struct acpi_device *device = info->bridge;
+	struct resource_entry *entry, *tmp;
+	unsigned long flags;
+
+	flags = IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT;
+	ret = acpi_dev_get_resources(device, list,
+				     acpi_dev_filter_resource_type_cb,
+				     (void *)flags);
+	if (ret < 0)
+		dev_warn(&device->dev,
+			 "failed to parse _CRS method, error code %d\n", ret);
+	else if (ret == 0)
+		dev_dbg(&device->dev,
+			"no IO and memory resources present in _CRS\n");
+	else {
+		resource_list_for_each_entry_safe(entry, tmp, list) {
+			if (entry->res->flags & IORESOURCE_DISABLED)
+				resource_list_destroy_entry(entry);
+			else
+				entry->res->name = info->name;
+		}
+		acpi_pci_root_validate_resources(&device->dev, list,
+						 IORESOURCE_MEM);
+		acpi_pci_root_validate_resources(&device->dev, list,
+						 IORESOURCE_IO);
+	}
+
+	return ret;
+}
+
+static void pci_acpi_root_add_resources(struct acpi_pci_root_info *info)
+{
+	struct resource_entry *entry, *tmp;
+	struct resource *res, *conflict, *root = NULL;
+
+	resource_list_for_each_entry_safe(entry, tmp, &info->resources) {
+		res = entry->res;
+		if (res->flags & IORESOURCE_MEM)
+			root = &iomem_resource;
+		else if (res->flags & IORESOURCE_IO)
+			root = &ioport_resource;
+		else
+			continue;
+
+		conflict = insert_resource_conflict(root, res);
+		if (conflict) {
+			dev_info(&info->bridge->dev,
+				 "ignoring host bridge window %pR (conflicts with %s %pR)\n",
+				 res, conflict->name, conflict);
+			resource_list_destroy_entry(entry);
+		}
+	}
+}
+
+static void __acpi_pci_root_release_info(struct acpi_pci_root_info *info)
+{
+	struct resource *res;
+	struct resource_entry *entry, *tmp;
+
+	if (!info)
+		return;
+
+	resource_list_for_each_entry_safe(entry, tmp, &info->resources) {
+		res = entry->res;
+		if (res->parent &&
+		    (res->flags & (IORESOURCE_MEM | IORESOURCE_IO)))
+			release_resource(res);
+		resource_list_destroy_entry(entry);
+	}
+
+	info->ops->release_info(info);
+}
+
+static void acpi_pci_root_release_info(struct pci_host_bridge *bridge)
+{
+	struct resource *res;
+	struct resource_entry *entry;
+
+	resource_list_for_each_entry(entry, &bridge->windows) {
+		res = entry->res;
+		if (res->parent &&
+		    (res->flags & (IORESOURCE_MEM | IORESOURCE_IO)))
+			release_resource(res);
+	}
+	__acpi_pci_root_release_info(bridge->release_data);
+}
+
+struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
+				     struct acpi_pci_root_ops *ops,
+				     struct acpi_pci_root_info *info,
+				     void *sysdata)
+{
+	int ret, busnum = root->secondary.start;
+	struct acpi_device *device = root->device;
+	int node = acpi_get_node(device->handle);
+	struct pci_bus *bus;
+
+	info->root = root;
+	info->bridge = device;
+	info->ops = ops;
+	INIT_LIST_HEAD(&info->resources);
+	snprintf(info->name, sizeof(info->name), "PCI Bus %04x:%02x",
+		 root->segment, busnum);
+
+	if (ops->init_info && ops->init_info(info))
+		goto out_release_info;
+	if (ops->prepare_resources)
+		ret = ops->prepare_resources(info);
+	else
+		ret = acpi_pci_probe_root_resources(info);
+	if (ret < 0)
+		goto out_release_info;
+
+	pci_acpi_root_add_resources(info);
+	pci_add_resource(&info->resources, &root->secondary);
+	bus = pci_create_root_bus(NULL, busnum, ops->pci_ops,
+				  sysdata, &info->resources);
+	if (!bus)
+		goto out_release_info;
+
+	pci_scan_child_bus(bus);
+	pci_set_host_bridge_release(to_pci_host_bridge(bus->bridge),
+				    acpi_pci_root_release_info, info);
+	if (node != NUMA_NO_NODE)
+		dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
+	return bus;
+
+out_release_info:
+	__acpi_pci_root_release_info(info);
+	return NULL;
+}
+
 void __init acpi_pci_root_init(void)
 {
 	acpi_hest_init();
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index 75c28eae8860..2a358154b770 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -144,11 +144,9 @@ static const struct file_operations acpi_system_wakeup_device_fops = {
 	.release = single_release,
 };
 
-int __init acpi_sleep_proc_init(void)
+void __init acpi_sleep_proc_init(void)
 {
 	/* 'wakeup device' [R/W] */
 	proc_create("wakeup", S_IFREG | S_IRUGO | S_IWUSR,
 		    acpi_root_dir, &acpi_system_wakeup_device_fops);
-
-	return 0;
 }
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 51e658f21e95..f4e02ae93f58 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -242,6 +242,10 @@ static int __acpi_processor_start(struct acpi_device *device)
 	if (pr->flags.need_hotplug_init)
 		return 0;
 
+	result = acpi_cppc_processor_probe(pr);
+	if (result)
+		return -ENODEV;
+
 	if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
 		acpi_processor_power_init(pr);
 
@@ -287,6 +291,8 @@ static int acpi_processor_stop(struct device *dev)
 
 	acpi_pss_perf_exit(pr, device);
 
+	acpi_cppc_processor_exit(pr);
+
 	return 0;
 }
 
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 6d99450549c5..88f4306744c0 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -19,11 +19,133 @@
 
 #include "internal.h"
 
+static int acpi_data_get_property_array(struct acpi_device_data *data,
+					const char *name,
+					acpi_object_type type,
+					const union acpi_object **obj);
+
 /* ACPI _DSD device properties UUID: daffd814-6eba-4d8c-8a91-bc9bbf4aa301 */
 static const u8 prp_uuid[16] = {
 	0x14, 0xd8, 0xff, 0xda, 0xba, 0x6e, 0x8c, 0x4d,
 	0x8a, 0x91, 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01
 };
+/* ACPI _DSD data subnodes UUID: dbb8e3e6-5886-4ba6-8795-1319f52a966b */
+static const u8 ads_uuid[16] = {
+	0xe6, 0xe3, 0xb8, 0xdb, 0x86, 0x58, 0xa6, 0x4b,
+	0x87, 0x95, 0x13, 0x19, 0xf5, 0x2a, 0x96, 0x6b
+};
+
+static bool acpi_enumerate_nondev_subnodes(acpi_handle scope,
+					   const union acpi_object *desc,
+					   struct acpi_device_data *data);
+static bool acpi_extract_properties(const union acpi_object *desc,
+				    struct acpi_device_data *data);
+
+static bool acpi_nondev_subnode_ok(acpi_handle scope,
+				   const union acpi_object *link,
+				   struct list_head *list)
+{
+	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
+	struct acpi_data_node *dn;
+	acpi_handle handle;
+	acpi_status status;
+
+	dn = kzalloc(sizeof(*dn), GFP_KERNEL);
+	if (!dn)
+		return false;
+
+	dn->name = link->package.elements[0].string.pointer;
+	dn->fwnode.type = FWNODE_ACPI_DATA;
+	INIT_LIST_HEAD(&dn->data.subnodes);
+
+	status = acpi_get_handle(scope, link->package.elements[1].string.pointer,
+				 &handle);
+	if (ACPI_FAILURE(status))
+		goto fail;
+
+	status = acpi_evaluate_object_typed(handle, NULL, NULL, &buf,
+					    ACPI_TYPE_PACKAGE);
+	if (ACPI_FAILURE(status))
+		goto fail;
+
+	if (acpi_extract_properties(buf.pointer, &dn->data))
+		dn->handle = handle;
+
+	/*
+	 * The scope for the subnode object lookup is the one of the namespace
+	 * node (device) containing the object that has returned the package.
+	 * That is, it's the scope of that object's parent.
+	 */
+	status = acpi_get_parent(handle, &scope);
+	if (ACPI_SUCCESS(status)
+	    && acpi_enumerate_nondev_subnodes(scope, buf.pointer, &dn->data))
+		dn->handle = handle;
+
+	if (dn->handle) {
+		dn->data.pointer = buf.pointer;
+		list_add_tail(&dn->sibling, list);
+		return true;
+	}
+
+	acpi_handle_debug(handle, "Invalid properties/subnodes data, skipping\n");
+
+ fail:
+	ACPI_FREE(buf.pointer);
+	kfree(dn);
+	return false;
+}
+
+static int acpi_add_nondev_subnodes(acpi_handle scope,
+				    const union acpi_object *links,
+				    struct list_head *list)
+{
+	bool ret = false;
+	int i;
+
+	for (i = 0; i < links->package.count; i++) {
+		const union acpi_object *link;
+
+		link = &links->package.elements[i];
+		/* Only two elements allowed, both must be strings. */
+		if (link->package.count == 2
+		    && link->package.elements[0].type == ACPI_TYPE_STRING
+		    && link->package.elements[1].type == ACPI_TYPE_STRING
+		    && acpi_nondev_subnode_ok(scope, link, list))
+			ret = true;
+	}
+
+	return ret;
+}
+
+static bool acpi_enumerate_nondev_subnodes(acpi_handle scope,
+					   const union acpi_object *desc,
+					   struct acpi_device_data *data)
+{
+	int i;
+
+	/* Look for the ACPI data subnodes UUID. */
+	for (i = 0; i < desc->package.count; i += 2) {
+		const union acpi_object *uuid, *links;
+
+		uuid = &desc->package.elements[i];
+		links = &desc->package.elements[i + 1];
+
+		/*
+		 * The first element must be a UUID and the second one must be
+		 * a package.
+		 */
+		if (uuid->type != ACPI_TYPE_BUFFER || uuid->buffer.length != 16
+		    || links->type != ACPI_TYPE_PACKAGE)
+			break;
+
+		if (memcmp(uuid->buffer.pointer, ads_uuid, sizeof(ads_uuid)))
+			continue;
+
+		return acpi_add_nondev_subnodes(scope, links, &data->subnodes);
+	}
+
+	return false;
+}
 
 static bool acpi_property_value_ok(const union acpi_object *value)
 {
@@ -81,8 +203,8 @@ static void acpi_init_of_compatible(struct acpi_device *adev)
 	const union acpi_object *of_compatible;
 	int ret;
 
-	ret = acpi_dev_get_property_array(adev, "compatible", ACPI_TYPE_STRING,
-					  &of_compatible);
+	ret = acpi_data_get_property_array(&adev->data, "compatible",
+					   ACPI_TYPE_STRING, &of_compatible);
 	if (ret) {
 		ret = acpi_dev_get_property(adev, "compatible",
 					    ACPI_TYPE_STRING, &of_compatible);
@@ -100,34 +222,13 @@ static void acpi_init_of_compatible(struct acpi_device *adev)
 	adev->flags.of_compatible_ok = 1;
 }
 
-void acpi_init_properties(struct acpi_device *adev)
+static bool acpi_extract_properties(const union acpi_object *desc,
+				    struct acpi_device_data *data)
 {
-	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
-	bool acpi_of = false;
-	struct acpi_hardware_id *hwid;
-	const union acpi_object *desc;
-	acpi_status status;
 	int i;
 
-	/*
-	 * Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in
-	 * Device Tree compatible properties for this device.
-	 */
-	list_for_each_entry(hwid, &adev->pnp.ids, list) {
-		if (!strcmp(hwid->id, ACPI_DT_NAMESPACE_HID)) {
-			acpi_of = true;
-			break;
-		}
-	}
-
-	status = acpi_evaluate_object_typed(adev->handle, "_DSD", NULL, &buf,
-					    ACPI_TYPE_PACKAGE);
-	if (ACPI_FAILURE(status))
-		goto out;
-
-	desc = buf.pointer;
 	if (desc->package.count % 2)
-		goto fail;
+		return false;
 
 	/* Look for the device properties UUID. */
 	for (i = 0; i < desc->package.count; i += 2) {
@@ -154,18 +255,50 @@ void acpi_init_properties(struct acpi_device *adev)
 		if (!acpi_properties_format_valid(properties))
 			break;
 
-		adev->data.pointer = buf.pointer;
-		adev->data.properties = properties;
+		data->properties = properties;
+		return true;
+	}
 
-		if (acpi_of)
-			acpi_init_of_compatible(adev);
+	return false;
+}
 
+void acpi_init_properties(struct acpi_device *adev)
+{
+	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
+	struct acpi_hardware_id *hwid;
+	acpi_status status;
+	bool acpi_of = false;
+
+	INIT_LIST_HEAD(&adev->data.subnodes);
+
+	/*
+	 * Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in
+	 * Device Tree compatible properties for this device.
+	 */
+	list_for_each_entry(hwid, &adev->pnp.ids, list) {
+		if (!strcmp(hwid->id, ACPI_DT_NAMESPACE_HID)) {
+			acpi_of = true;
+			break;
+		}
+	}
+
+	status = acpi_evaluate_object_typed(adev->handle, "_DSD", NULL, &buf,
+					    ACPI_TYPE_PACKAGE);
+	if (ACPI_FAILURE(status))
 		goto out;
+
+	if (acpi_extract_properties(buf.pointer, &adev->data)) {
+		adev->data.pointer = buf.pointer;
+		if (acpi_of)
+			acpi_init_of_compatible(adev);
 	}
+	if (acpi_enumerate_nondev_subnodes(adev->handle, buf.pointer, &adev->data))
+		adev->data.pointer = buf.pointer;
 
- fail:
-	dev_dbg(&adev->dev, "Returned _DSD data is not valid, skipping\n");
-	ACPI_FREE(buf.pointer);
+	if (!adev->data.pointer) {
+		acpi_handle_debug(adev->handle, "Invalid _DSD data, skipping\n");
+		ACPI_FREE(buf.pointer);
+	}
 
  out:
 	if (acpi_of && !adev->flags.of_compatible_ok)
@@ -173,8 +306,25 @@ void acpi_init_properties(struct acpi_device *adev)
 			 ACPI_DT_NAMESPACE_HID " requires 'compatible' property\n");
 }
 
+static void acpi_destroy_nondev_subnodes(struct list_head *list)
+{
+	struct acpi_data_node *dn, *next;
+
+	if (list_empty(list))
+		return;
+
+	list_for_each_entry_safe_reverse(dn, next, list, sibling) {
+		acpi_destroy_nondev_subnodes(&dn->data.subnodes);
+		wait_for_completion(&dn->kobj_done);
+		list_del(&dn->sibling);
+		ACPI_FREE((void *)dn->data.pointer);
+		kfree(dn);
+	}
+}
+
 void acpi_free_properties(struct acpi_device *adev)
 {
+	acpi_destroy_nondev_subnodes(&adev->data.subnodes);
 	ACPI_FREE((void *)adev->data.pointer);
 	adev->data.of_compatible = NULL;
 	adev->data.pointer = NULL;
@@ -182,8 +332,8 @@ void acpi_free_properties(struct acpi_device *adev)
 }
 
 /**
- * acpi_dev_get_property - return an ACPI property with given name
- * @adev: ACPI device to get property
+ * acpi_data_get_property - return an ACPI property with given name
+ * @data: ACPI device deta object to get the property from
  * @name: Name of the property
  * @type: Expected property type
  * @obj: Location to store the property value (if not %NULL)
@@ -192,26 +342,27 @@ void acpi_free_properties(struct acpi_device *adev)
  * object at the location pointed to by @obj if found.
  *
  * Callers must not attempt to free the returned objects.  These objects will be
- * freed by the ACPI core automatically during the removal of @adev.
+ * freed by the ACPI core automatically during the removal of @data.
  *
  * Return: %0 if property with @name has been found (success),
  *         %-EINVAL if the arguments are invalid,
  *         %-ENODATA if the property doesn't exist,
  *         %-EPROTO if the property value type doesn't match @type.
  */
-int acpi_dev_get_property(struct acpi_device *adev, const char *name,
-			  acpi_object_type type, const union acpi_object **obj)
+static int acpi_data_get_property(struct acpi_device_data *data,
+				  const char *name, acpi_object_type type,
+				  const union acpi_object **obj)
 {
 	const union acpi_object *properties;
 	int i;
 
-	if (!adev || !name)
+	if (!data || !name)
 		return -EINVAL;
 
-	if (!adev->data.pointer || !adev->data.properties)
+	if (!data->pointer || !data->properties)
 		return -ENODATA;
 
-	properties = adev->data.properties;
+	properties = data->properties;
 	for (i = 0; i < properties->package.count; i++) {
 		const union acpi_object *propname, *propvalue;
 		const union acpi_object *property;
@@ -232,11 +383,50 @@ int acpi_dev_get_property(struct acpi_device *adev, const char *name,
 	}
 	return -ENODATA;
 }
+
+/**
+ * acpi_dev_get_property - return an ACPI property with given name.
+ * @adev: ACPI device to get the property from.
+ * @name: Name of the property.
+ * @type: Expected property type.
+ * @obj: Location to store the property value (if not %NULL).
+ */
+int acpi_dev_get_property(struct acpi_device *adev, const char *name,
+			  acpi_object_type type, const union acpi_object **obj)
+{
+	return adev ? acpi_data_get_property(&adev->data, name, type, obj) : -EINVAL;
+}
 EXPORT_SYMBOL_GPL(acpi_dev_get_property);
 
+static struct acpi_device_data *acpi_device_data_of_node(struct fwnode_handle *fwnode)
+{
+	if (fwnode->type == FWNODE_ACPI) {
+		struct acpi_device *adev = to_acpi_device_node(fwnode);
+		return &adev->data;
+	} else if (fwnode->type == FWNODE_ACPI_DATA) {
+		struct acpi_data_node *dn = to_acpi_data_node(fwnode);
+		return &dn->data;
+	}
+	return NULL;
+}
+
+/**
+ * acpi_node_prop_get - return an ACPI property with given name.
+ * @fwnode: Firmware node to get the property from.
+ * @propname: Name of the property.
+ * @valptr: Location to store a pointer to the property value (if not %NULL).
+ */
+int acpi_node_prop_get(struct fwnode_handle *fwnode, const char *propname,
+		       void **valptr)
+{
+	return acpi_data_get_property(acpi_device_data_of_node(fwnode),
+				      propname, ACPI_TYPE_ANY,
+				      (const union acpi_object **)valptr);
+}
+
 /**
- * acpi_dev_get_property_array - return an ACPI array property with given name
- * @adev: ACPI device to get property
+ * acpi_data_get_property_array - return an ACPI array property with given name
+ * @adev: ACPI data object to get the property from
  * @name: Name of the property
  * @type: Expected type of array elements
  * @obj: Location to store a pointer to the property value (if not NULL)
@@ -245,7 +435,7 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property);
  * ACPI object at the location pointed to by @obj if found.
  *
  * Callers must not attempt to free the returned objects.  Those objects will be
- * freed by the ACPI core automatically during the removal of @adev.
+ * freed by the ACPI core automatically during the removal of @data.
  *
  * Return: %0 if array property (package) with @name has been found (success),
  *         %-EINVAL if the arguments are invalid,
@@ -253,14 +443,15 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property);
  *         %-EPROTO if the property is not a package or the type of its elements
  *           doesn't match @type.
  */
-int acpi_dev_get_property_array(struct acpi_device *adev, const char *name,
-				acpi_object_type type,
-				const union acpi_object **obj)
+static int acpi_data_get_property_array(struct acpi_device_data *data,
+					const char *name,
+					acpi_object_type type,
+					const union acpi_object **obj)
 {
 	const union acpi_object *prop;
 	int ret, i;
 
-	ret = acpi_dev_get_property(adev, name, ACPI_TYPE_PACKAGE, &prop);
+	ret = acpi_data_get_property(data, name, ACPI_TYPE_PACKAGE, &prop);
 	if (ret)
 		return ret;
 
@@ -275,12 +466,11 @@ int acpi_dev_get_property_array(struct acpi_device *adev, const char *name,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(acpi_dev_get_property_array);
 
 /**
- * acpi_dev_get_property_reference - returns handle to the referenced object
- * @adev: ACPI device to get property
- * @name: Name of the property
+ * acpi_data_get_property_reference - returns handle to the referenced object
+ * @data: ACPI device data object containing the property
+ * @propname: Name of the property
  * @index: Index of the reference to return
  * @args: Location to store the returned reference with optional arguments
  *
@@ -294,16 +484,16 @@ EXPORT_SYMBOL_GPL(acpi_dev_get_property_array);
  *
  * Return: %0 on success, negative error code on failure.
  */
-int acpi_dev_get_property_reference(struct acpi_device *adev,
-				    const char *name, size_t index,
-				    struct acpi_reference_args *args)
+static int acpi_data_get_property_reference(struct acpi_device_data *data,
+					    const char *propname, size_t index,
+					    struct acpi_reference_args *args)
 {
 	const union acpi_object *element, *end;
 	const union acpi_object *obj;
 	struct acpi_device *device;
 	int ret, idx = 0;
 
-	ret = acpi_dev_get_property(adev, name, ACPI_TYPE_ANY, &obj);
+	ret = acpi_data_get_property(data, propname, ACPI_TYPE_ANY, &obj);
 	if (ret)
 		return ret;
 
@@ -378,17 +568,27 @@ int acpi_dev_get_property_reference(struct acpi_device *adev,
 
 	return -EPROTO;
 }
-EXPORT_SYMBOL_GPL(acpi_dev_get_property_reference);
 
-int acpi_dev_prop_get(struct acpi_device *adev, const char *propname,
-		      void **valptr)
+/**
+ * acpi_node_get_property_reference - get a handle to the referenced object.
+ * @fwnode: Firmware node to get the property from.
+ * @propname: Name of the property.
+ * @index: Index of the reference to return.
+ * @args: Location to store the returned reference with optional arguments.
+ */
+int acpi_node_get_property_reference(struct fwnode_handle *fwnode,
+				     const char *name, size_t index,
+				     struct acpi_reference_args *args)
 {
-	return acpi_dev_get_property(adev, propname, ACPI_TYPE_ANY,
-				     (const union acpi_object **)valptr);
+	struct acpi_device_data *data = acpi_device_data_of_node(fwnode);
+
+	return data ? acpi_data_get_property_reference(data, name, index, args) : -EINVAL;
 }
+EXPORT_SYMBOL_GPL(acpi_node_get_property_reference);
 
-int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
-			      enum dev_prop_type proptype, void *val)
+static int acpi_data_prop_read_single(struct acpi_device_data *data,
+				      const char *propname,
+				      enum dev_prop_type proptype, void *val)
 {
 	const union acpi_object *obj;
 	int ret;
@@ -397,7 +597,7 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
 		return -EINVAL;
 
 	if (proptype >= DEV_PROP_U8 && proptype <= DEV_PROP_U64) {
-		ret = acpi_dev_get_property(adev, propname, ACPI_TYPE_INTEGER, &obj);
+		ret = acpi_data_get_property(data, propname, ACPI_TYPE_INTEGER, &obj);
 		if (ret)
 			return ret;
 
@@ -422,7 +622,7 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
 			break;
 		}
 	} else if (proptype == DEV_PROP_STRING) {
-		ret = acpi_dev_get_property(adev, propname, ACPI_TYPE_STRING, &obj);
+		ret = acpi_data_get_property(data, propname, ACPI_TYPE_STRING, &obj);
 		if (ret)
 			return ret;
 
@@ -433,6 +633,12 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
 	return ret;
 }
 
+int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
+			      enum dev_prop_type proptype, void *val)
+{
+	return adev ? acpi_data_prop_read_single(&adev->data, propname, proptype, val) : -EINVAL;
+}
+
 static int acpi_copy_property_array_u8(const union acpi_object *items, u8 *val,
 				       size_t nval)
 {
@@ -509,20 +715,22 @@ static int acpi_copy_property_array_string(const union acpi_object *items,
 	return 0;
 }
 
-int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
-		       enum dev_prop_type proptype, void *val, size_t nval)
+static int acpi_data_prop_read(struct acpi_device_data *data,
+			       const char *propname,
+			       enum dev_prop_type proptype,
+			       void *val, size_t nval)
 {
 	const union acpi_object *obj;
 	const union acpi_object *items;
 	int ret;
 
 	if (val && nval == 1) {
-		ret = acpi_dev_prop_read_single(adev, propname, proptype, val);
+		ret = acpi_data_prop_read_single(data, propname, proptype, val);
 		if (!ret)
 			return ret;
 	}
 
-	ret = acpi_dev_get_property_array(adev, propname, ACPI_TYPE_ANY, &obj);
+	ret = acpi_data_get_property_array(data, propname, ACPI_TYPE_ANY, &obj);
 	if (ret)
 		return ret;
 
@@ -558,3 +766,84 @@ int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
 	}
 	return ret;
 }
+
+int acpi_dev_prop_read(struct acpi_device *adev, const char *propname,
+		       enum dev_prop_type proptype, void *val, size_t nval)
+{
+	return adev ? acpi_data_prop_read(&adev->data, propname, proptype, val, nval) : -EINVAL;
+}
+
+/**
+ * acpi_node_prop_read - retrieve the value of an ACPI property with given name.
+ * @fwnode: Firmware node to get the property from.
+ * @propname: Name of the property.
+ * @proptype: Expected property type.
+ * @val: Location to store the property value (if not %NULL).
+ * @nval: Size of the array pointed to by @val.
+ *
+ * If @val is %NULL, return the number of array elements comprising the value
+ * of the property.  Otherwise, read at most @nval values to the array at the
+ * location pointed to by @val.
+ */
+int acpi_node_prop_read(struct fwnode_handle *fwnode,  const char *propname,
+		        enum dev_prop_type proptype, void *val, size_t nval)
+{
+	return acpi_data_prop_read(acpi_device_data_of_node(fwnode),
+				   propname, proptype, val, nval);
+}
+
+/**
+ * acpi_get_next_subnode - Return the next child node handle for a device.
+ * @dev: Device to find the next child node for.
+ * @child: Handle to one of the device's child nodes or a null handle.
+ */
+struct fwnode_handle *acpi_get_next_subnode(struct device *dev,
+					    struct fwnode_handle *child)
+{
+	struct acpi_device *adev = ACPI_COMPANION(dev);
+	struct list_head *head, *next;
+
+	if (!adev)
+		return NULL;
+
+	if (!child || child->type == FWNODE_ACPI) {
+		head = &adev->children;
+		if (list_empty(head))
+			goto nondev;
+
+		if (child) {
+			adev = to_acpi_device_node(child);
+			next = adev->node.next;
+			if (next == head) {
+				child = NULL;
+				goto nondev;
+			}
+			adev = list_entry(next, struct acpi_device, node);
+		} else {
+			adev = list_first_entry(head, struct acpi_device, node);
+		}
+		return acpi_fwnode_handle(adev);
+	}
+
+ nondev:
+	if (!child || child->type == FWNODE_ACPI_DATA) {
+		struct acpi_data_node *dn;
+
+		head = &adev->data.subnodes;
+		if (list_empty(head))
+			return NULL;
+
+		if (child) {
+			dn = to_acpi_data_node(child);
+			next = dn->sibling.next;
+			if (next == head)
+				return NULL;
+
+			dn = list_entry(next, struct acpi_data_node, sibling);
+		} else {
+			dn = list_first_entry(head, struct acpi_data_node, sibling);
+		}
+		return &dn->fwnode;
+	}
+	return NULL;
+}
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 15d22db05054..cdc5c2599beb 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -119,7 +119,7 @@ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
 EXPORT_SYMBOL_GPL(acpi_dev_resource_memory);
 
 static void acpi_dev_ioresource_flags(struct resource *res, u64 len,
-				      u8 io_decode)
+				      u8 io_decode, u8 translation_type)
 {
 	res->flags = IORESOURCE_IO;
 
@@ -131,6 +131,8 @@ static void acpi_dev_ioresource_flags(struct resource *res, u64 len,
 
 	if (io_decode == ACPI_DECODE_16)
 		res->flags |= IORESOURCE_IO_16BIT_ADDR;
+	if (translation_type == ACPI_SPARSE_TRANSLATION)
+		res->flags |= IORESOURCE_IO_SPARSE;
 }
 
 static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,
@@ -138,7 +140,7 @@ static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len,
 {
 	res->start = start;
 	res->end = start + len - 1;
-	acpi_dev_ioresource_flags(res, len, io_decode);
+	acpi_dev_ioresource_flags(res, len, io_decode, 0);
 }
 
 /**
@@ -231,7 +233,8 @@ static bool acpi_decode_space(struct resource_win *win,
 		acpi_dev_memresource_flags(res, len, wp);
 		break;
 	case ACPI_IO_RANGE:
-		acpi_dev_ioresource_flags(res, len, iodec);
+		acpi_dev_ioresource_flags(res, len, iodec,
+					  addr->info.io.translation_type);
 		break;
 	case ACPI_BUS_NUMBER_RANGE:
 		res->flags = IORESOURCE_BUS;
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 01136b879038..daf9fc8329e6 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -695,26 +695,6 @@ int acpi_device_add(struct acpi_device *device,
 	return result;
 }
 
-struct acpi_device *acpi_get_next_child(struct device *dev,
-					struct acpi_device *child)
-{
-	struct acpi_device *adev = ACPI_COMPANION(dev);
-	struct list_head *head, *next;
-
-	if (!adev)
-		return NULL;
-
-	head = &adev->children;
-	if (list_empty(head))
-		return NULL;
-
-	if (!child)
-		return list_first_entry(head, struct acpi_device, node);
-
-	next = child->node.next;
-	return next == head ? NULL : list_entry(next, struct acpi_device, node);
-}
-
 /* --------------------------------------------------------------------------
                                  Device Enumeration
    -------------------------------------------------------------------------- */
@@ -1184,7 +1164,7 @@ static void acpi_add_id(struct acpi_device_pnp *pnp, const char *dev_id)
 	if (!id)
 		return;
 
-	id->id = kstrdup(dev_id, GFP_KERNEL);
+	id->id = kstrdup_const(dev_id, GFP_KERNEL);
 	if (!id->id) {
 		kfree(id);
 		return;
@@ -1322,7 +1302,7 @@ void acpi_free_pnp_ids(struct acpi_device_pnp *pnp)
 	struct acpi_hardware_id *id, *tmp;
 
 	list_for_each_entry_safe(id, tmp, &pnp->ids, list) {
-		kfree(id->id);
+		kfree_const(id->id);
 		kfree(id);
 	}
 	kfree(pnp->unique_id);
@@ -1472,7 +1452,7 @@ bool acpi_device_is_present(struct acpi_device *adev)
 }
 
 static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler,
-				       char *idstr,
+				       const char *idstr,
 				       const struct acpi_device_id **matchid)
 {
 	const struct acpi_device_id *devid;
@@ -1491,7 +1471,7 @@ static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler,
 	return false;
 }
 
-static struct acpi_scan_handler *acpi_scan_match_handler(char *idstr,
+static struct acpi_scan_handler *acpi_scan_match_handler(const char *idstr,
 					const struct acpi_device_id **matchid)
 {
 	struct acpi_scan_handler *handler;
@@ -1933,3 +1913,42 @@ int __init acpi_scan_init(void)
 	mutex_unlock(&acpi_scan_lock);
 	return result;
 }
+
+static struct acpi_probe_entry *ape;
+static int acpi_probe_count;
+static DEFINE_SPINLOCK(acpi_probe_lock);
+
+static int __init acpi_match_madt(struct acpi_subtable_header *header,
+				  const unsigned long end)
+{
+	if (!ape->subtable_valid || ape->subtable_valid(header, ape))
+		if (!ape->probe_subtbl(header, end))
+			acpi_probe_count++;
+
+	return 0;
+}
+
+int __init __acpi_probe_device_table(struct acpi_probe_entry *ap_head, int nr)
+{
+	int count = 0;
+
+	if (acpi_disabled)
+		return 0;
+
+	spin_lock(&acpi_probe_lock);
+	for (ape = ap_head; nr; ape++, nr--) {
+		if (ACPI_COMPARE_NAME(ACPI_SIG_MADT, ape->id)) {
+			acpi_probe_count = 0;
+			acpi_table_parse_madt(ape->type, acpi_match_madt, 0);
+			count += acpi_probe_count;
+		} else {
+			int res;
+			res = acpi_table_parse(ape->id, ape->probe_table);
+			if (!res)
+				count++;
+		}
+	}
+	spin_unlock(&acpi_probe_lock);
+
+	return count;
+}
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 2f0d4db40a9e..0d94621dc856 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -487,6 +487,8 @@ static int acpi_suspend_begin(suspend_state_t pm_state)
 		pr_err("ACPI does not support sleep state S%u\n", acpi_state);
 		return -ENOSYS;
 	}
+	if (acpi_state > ACPI_STATE_S1)
+		pm_set_suspend_via_firmware();
 
 	acpi_pm_start(acpi_state);
 	return 0;
@@ -522,6 +524,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
 		if (error)
 			return error;
 		pr_info(PREFIX "Low-level resume complete\n");
+		pm_set_resume_via_firmware();
 		break;
 	}
 	trace_suspend_resume(TPS("acpi_suspend"), acpi_state, false);
@@ -632,14 +635,16 @@ static int acpi_freeze_prepare(void)
 	acpi_enable_wakeup_devices(ACPI_STATE_S0);
 	acpi_enable_all_wakeup_gpes();
 	acpi_os_wait_events_complete();
-	enable_irq_wake(acpi_gbl_FADT.sci_interrupt);
+	if (acpi_sci_irq_valid())
+		enable_irq_wake(acpi_sci_irq);
 	return 0;
 }
 
 static void acpi_freeze_restore(void)
 {
 	acpi_disable_wakeup_devices(ACPI_STATE_S0);
-	disable_irq_wake(acpi_gbl_FADT.sci_interrupt);
+	if (acpi_sci_irq_valid())
+		disable_irq_wake(acpi_sci_irq);
 	acpi_enable_all_runtime_gpes();
 }
 
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 40a42655227c..0243d375c6fd 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -878,6 +878,9 @@ int __init acpi_sysfs_init(void)
 		return result;
 
 	hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
+	if (!hotplug_kobj)
+		return -ENOMEM;
+
 	result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
 	if (result)
 		return result;
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 17a6fa01a338..6c0f0794aa82 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -210,20 +210,39 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
 	}
 }
 
-int __init
-acpi_parse_entries(char *id, unsigned long table_size,
-		acpi_tbl_entry_handler handler,
+/**
+ * acpi_parse_entries_array - for each proc_num find a suitable subtable
+ *
+ * @id: table id (for debugging purposes)
+ * @table_size: single entry size
+ * @table_header: where does the table start?
+ * @proc: array of acpi_subtable_proc struct containing entry id
+ *        and associated handler with it
+ * @proc_num: how big proc is?
+ * @max_entries: how many entries can we process?
+ *
+ * For each proc_num find a subtable with proc->id and run proc->handler
+ * on it. Assumption is that there's only single handler for particular
+ * entry id.
+ *
+ * On success returns sum of all matching entries for all proc handlers.
+ * Otherwise, -ENODEV or -EINVAL is returned.
+ */
+static int __init
+acpi_parse_entries_array(char *id, unsigned long table_size,
 		struct acpi_table_header *table_header,
-		int entry_id, unsigned int max_entries)
+		struct acpi_subtable_proc *proc, int proc_num,
+		unsigned int max_entries)
 {
 	struct acpi_subtable_header *entry;
-	int count = 0;
 	unsigned long table_end;
+	int count = 0;
+	int i;
 
 	if (acpi_disabled)
 		return -ENODEV;
 
-	if (!id || !handler)
+	if (!id)
 		return -EINVAL;
 
 	if (!table_size)
@@ -243,20 +262,28 @@ acpi_parse_entries(char *id, unsigned long table_size,
 
 	while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
 	       table_end) {
-		if (entry->type == entry_id
-		    && (!max_entries || count < max_entries)) {
-			if (handler(entry, table_end))
+		if (max_entries && count >= max_entries)
+			break;
+
+		for (i = 0; i < proc_num; i++) {
+			if (entry->type != proc[i].id)
+				continue;
+			if (!proc[i].handler ||
+			     proc[i].handler(entry, table_end))
 				return -EINVAL;
 
-			count++;
+			proc->count++;
+			break;
 		}
+		if (i != proc_num)
+			count++;
 
 		/*
 		 * If entry->length is 0, break from this loop to avoid
 		 * infinite loop.
 		 */
 		if (entry->length == 0) {
-			pr_err("[%4.4s:0x%02x] Invalid zero length\n", id, entry_id);
+			pr_err("[%4.4s:0x%02x] Invalid zero length\n", id, proc->id);
 			return -EINVAL;
 		}
 
@@ -266,17 +293,32 @@ acpi_parse_entries(char *id, unsigned long table_size,
 
 	if (max_entries && count > max_entries) {
 		pr_warn("[%4.4s:0x%02x] ignored %i entries of %i found\n",
-			id, entry_id, count - max_entries, count);
+			id, proc->id, count - max_entries, count);
 	}
 
 	return count;
 }
 
 int __init
-acpi_table_parse_entries(char *id,
+acpi_parse_entries(char *id,
+			unsigned long table_size,
+			acpi_tbl_entry_handler handler,
+			struct acpi_table_header *table_header,
+			int entry_id, unsigned int max_entries)
+{
+	struct acpi_subtable_proc proc = {
+		.id		= entry_id,
+		.handler	= handler,
+	};
+
+	return acpi_parse_entries_array(id, table_size, table_header,
+			&proc, 1, max_entries);
+}
+
+int __init
+acpi_table_parse_entries_array(char *id,
 			 unsigned long table_size,
-			 int entry_id,
-			 acpi_tbl_entry_handler handler,
+			 struct acpi_subtable_proc *proc, int proc_num,
 			 unsigned int max_entries)
 {
 	struct acpi_table_header *table_header = NULL;
@@ -287,7 +329,7 @@ acpi_table_parse_entries(char *id,
 	if (acpi_disabled)
 		return -ENODEV;
 
-	if (!id || !handler)
+	if (!id)
 		return -EINVAL;
 
 	if (!strncmp(id, ACPI_SIG_MADT, 4))
@@ -299,14 +341,30 @@ acpi_table_parse_entries(char *id,
 		return -ENODEV;
 	}
 
-	count = acpi_parse_entries(id, table_size, handler, table_header,
-			entry_id, max_entries);
+	count = acpi_parse_entries_array(id, table_size, table_header,
+			proc, proc_num, max_entries);
 
 	early_acpi_os_unmap_memory((char *)table_header, tbl_size);
 	return count;
 }
 
 int __init
+acpi_table_parse_entries(char *id,
+			unsigned long table_size,
+			int entry_id,
+			acpi_tbl_entry_handler handler,
+			unsigned int max_entries)
+{
+	struct acpi_subtable_proc proc = {
+		.id		= entry_id,
+		.handler	= handler,
+	};
+
+	return acpi_table_parse_entries_array(id, table_size, &proc, 1,
+						max_entries);
+}
+
+int __init
 acpi_table_parse_madt(enum acpi_madt_type id,
 		      acpi_tbl_entry_handler handler, unsigned int max_entries)
 {
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 2922f1f252d5..0d3a384b508a 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -244,6 +244,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 
 	/* Non win8 machines which need native backlight nevertheless */
 	{
+	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1201530 */
+	 .callback = video_detect_force_native,
+	 .ident = "Lenovo Ideapad S405",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_BOARD_NAME, "Lenovo IdeaPad S405"),
+		},
+	},
+	{
 	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */
 	 .callback = video_detect_force_native,
 	 .ident = "Lenovo Ideapad Z570",
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index f94a6ccfe787..5998c53280f5 100644
--- a/drivers/base/power/Makefile
+++ b/drivers/base/power/Makefile
@@ -1,7 +1,7 @@
 obj-$(CONFIG_PM)	+= sysfs.o generic_ops.o common.o qos.o runtime.o wakeirq.o
 obj-$(CONFIG_PM_SLEEP)	+= main.o wakeup.o
 obj-$(CONFIG_PM_TRACE_RTC)	+= trace.o
-obj-$(CONFIG_PM_OPP)	+= opp.o
+obj-$(CONFIG_PM_OPP)	+= opp/
 obj-$(CONFIG_PM_GENERIC_DOMAINS)	+=  domain.o domain_governor.o
 obj-$(CONFIG_HAVE_CLK)	+= clock_ops.o
 
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
index 652b5a367c1f..fd0973b922a7 100644
--- a/drivers/base/power/clock_ops.c
+++ b/drivers/base/power/clock_ops.c
@@ -17,7 +17,7 @@
 #include <linux/err.h>
 #include <linux/pm_runtime.h>
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_CLK
 
 enum pce_status {
 	PCE_STATUS_NONE = 0,
@@ -404,7 +404,7 @@ int pm_clk_runtime_resume(struct device *dev)
 	return pm_generic_runtime_resume(dev);
 }
 
-#else /* !CONFIG_PM */
+#else /* !CONFIG_PM_CLK */
 
 /**
  * enable_clock - Enable a device clock.
@@ -484,7 +484,7 @@ static int pm_clk_notify(struct notifier_block *nb,
 	return 0;
 }
 
-#endif /* !CONFIG_PM */
+#endif /* !CONFIG_PM_CLK */
 
 /**
  * pm_clk_add_notifier - Add bus type notifier for power management clocks.
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 16550c63d611..a7dfdf9f15ba 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -34,43 +34,9 @@
 	__ret;							\
 })
 
-#define GENPD_DEV_TIMED_CALLBACK(genpd, type, callback, dev, field, name)	\
-({										\
-	ktime_t __start = ktime_get();						\
-	type __retval = GENPD_DEV_CALLBACK(genpd, type, callback, dev);		\
-	s64 __elapsed = ktime_to_ns(ktime_sub(ktime_get(), __start));		\
-	struct gpd_timing_data *__td = &dev_gpd_data(dev)->td;			\
-	if (!__retval && __elapsed > __td->field) {				\
-		__td->field = __elapsed;					\
-		dev_dbg(dev, name " latency exceeded, new value %lld ns\n",	\
-			__elapsed);						\
-		genpd->max_off_time_changed = true;				\
-		__td->constraint_changed = true;				\
-	}									\
-	__retval;								\
-})
-
 static LIST_HEAD(gpd_list);
 static DEFINE_MUTEX(gpd_list_lock);
 
-static struct generic_pm_domain *pm_genpd_lookup_name(const char *domain_name)
-{
-	struct generic_pm_domain *genpd = NULL, *gpd;
-
-	if (IS_ERR_OR_NULL(domain_name))
-		return NULL;
-
-	mutex_lock(&gpd_list_lock);
-	list_for_each_entry(gpd, &gpd_list, gpd_list_node) {
-		if (!strcmp(gpd->name, domain_name)) {
-			genpd = gpd;
-			break;
-		}
-	}
-	mutex_unlock(&gpd_list_lock);
-	return genpd;
-}
-
 /*
  * Get the generic PM domain for a particular struct device.
  * This validates the struct device pointer, the PM domain pointer,
@@ -110,18 +76,12 @@ static struct generic_pm_domain *dev_to_genpd(struct device *dev)
 
 static int genpd_stop_dev(struct generic_pm_domain *genpd, struct device *dev)
 {
-	return GENPD_DEV_TIMED_CALLBACK(genpd, int, stop, dev,
-					stop_latency_ns, "stop");
+	return GENPD_DEV_CALLBACK(genpd, int, stop, dev);
 }
 
-static int genpd_start_dev(struct generic_pm_domain *genpd, struct device *dev,
-			bool timed)
+static int genpd_start_dev(struct generic_pm_domain *genpd, struct device *dev)
 {
-	if (!timed)
-		return GENPD_DEV_CALLBACK(genpd, int, start, dev);
-
-	return GENPD_DEV_TIMED_CALLBACK(genpd, int, start, dev,
-					start_latency_ns, "start");
+	return GENPD_DEV_CALLBACK(genpd, int, start, dev);
 }
 
 static bool genpd_sd_counter_dec(struct generic_pm_domain *genpd)
@@ -140,19 +100,6 @@ static void genpd_sd_counter_inc(struct generic_pm_domain *genpd)
 	smp_mb__after_atomic();
 }
 
-static void genpd_recalc_cpu_exit_latency(struct generic_pm_domain *genpd)
-{
-	s64 usecs64;
-
-	if (!genpd->cpuidle_data)
-		return;
-
-	usecs64 = genpd->power_on_latency_ns;
-	do_div(usecs64, NSEC_PER_USEC);
-	usecs64 += genpd->cpuidle_data->saved_exit_latency;
-	genpd->cpuidle_data->idle_state->exit_latency = usecs64;
-}
-
 static int genpd_power_on(struct generic_pm_domain *genpd, bool timed)
 {
 	ktime_t time_start;
@@ -176,7 +123,6 @@ static int genpd_power_on(struct generic_pm_domain *genpd, bool timed)
 
 	genpd->power_on_latency_ns = elapsed_ns;
 	genpd->max_off_time_changed = true;
-	genpd_recalc_cpu_exit_latency(genpd);
 	pr_debug("%s: Power-%s latency exceeded, new value %lld ns\n",
 		 genpd->name, "on", elapsed_ns);
 
@@ -213,10 +159,10 @@ static int genpd_power_off(struct generic_pm_domain *genpd, bool timed)
 }
 
 /**
- * genpd_queue_power_off_work - Queue up the execution of pm_genpd_poweroff().
+ * genpd_queue_power_off_work - Queue up the execution of genpd_poweroff().
  * @genpd: PM domait to power off.
  *
- * Queue up the execution of pm_genpd_poweroff() unless it's already been done
+ * Queue up the execution of genpd_poweroff() unless it's already been done
  * before.
  */
 static void genpd_queue_power_off_work(struct generic_pm_domain *genpd)
@@ -224,14 +170,16 @@ static void genpd_queue_power_off_work(struct generic_pm_domain *genpd)
 	queue_work(pm_wq, &genpd->power_off_work);
 }
 
+static int genpd_poweron(struct generic_pm_domain *genpd);
+
 /**
- * __pm_genpd_poweron - Restore power to a given PM domain and its masters.
+ * __genpd_poweron - Restore power to a given PM domain and its masters.
  * @genpd: PM domain to power up.
  *
  * Restore power to @genpd and all of its masters so that it is possible to
  * resume a device belonging to it.
  */
-static int __pm_genpd_poweron(struct generic_pm_domain *genpd)
+static int __genpd_poweron(struct generic_pm_domain *genpd)
 {
 	struct gpd_link *link;
 	int ret = 0;
@@ -240,13 +188,6 @@ static int __pm_genpd_poweron(struct generic_pm_domain *genpd)
 	    || (genpd->prepared_count > 0 && genpd->suspend_power_off))
 		return 0;
 
-	if (genpd->cpuidle_data) {
-		cpuidle_pause_and_lock();
-		genpd->cpuidle_data->idle_state->disabled = true;
-		cpuidle_resume_and_unlock();
-		goto out;
-	}
-
 	/*
 	 * The list is guaranteed not to change while the loop below is being
 	 * executed, unless one of the masters' .power_on() callbacks fiddles
@@ -255,7 +196,7 @@ static int __pm_genpd_poweron(struct generic_pm_domain *genpd)
 	list_for_each_entry(link, &genpd->slave_links, slave_node) {
 		genpd_sd_counter_inc(link->master);
 
-		ret = pm_genpd_poweron(link->master);
+		ret = genpd_poweron(link->master);
 		if (ret) {
 			genpd_sd_counter_dec(link->master);
 			goto err;
@@ -266,7 +207,6 @@ static int __pm_genpd_poweron(struct generic_pm_domain *genpd)
 	if (ret)
 		goto err;
 
- out:
 	genpd->status = GPD_STATE_ACTIVE;
 	return 0;
 
@@ -282,46 +222,28 @@ static int __pm_genpd_poweron(struct generic_pm_domain *genpd)
 }
 
 /**
- * pm_genpd_poweron - Restore power to a given PM domain and its masters.
+ * genpd_poweron - Restore power to a given PM domain and its masters.
  * @genpd: PM domain to power up.
  */
-int pm_genpd_poweron(struct generic_pm_domain *genpd)
+static int genpd_poweron(struct generic_pm_domain *genpd)
 {
 	int ret;
 
 	mutex_lock(&genpd->lock);
-	ret = __pm_genpd_poweron(genpd);
+	ret = __genpd_poweron(genpd);
 	mutex_unlock(&genpd->lock);
 	return ret;
 }
 
-/**
- * pm_genpd_name_poweron - Restore power to a given PM domain and its masters.
- * @domain_name: Name of the PM domain to power up.
- */
-int pm_genpd_name_poweron(const char *domain_name)
-{
-	struct generic_pm_domain *genpd;
-
-	genpd = pm_genpd_lookup_name(domain_name);
-	return genpd ? pm_genpd_poweron(genpd) : -EINVAL;
-}
-
 static int genpd_save_dev(struct generic_pm_domain *genpd, struct device *dev)
 {
-	return GENPD_DEV_TIMED_CALLBACK(genpd, int, save_state, dev,
-					save_state_latency_ns, "state save");
+	return GENPD_DEV_CALLBACK(genpd, int, save_state, dev);
 }
 
 static int genpd_restore_dev(struct generic_pm_domain *genpd,
-			struct device *dev, bool timed)
+			struct device *dev)
 {
-	if (!timed)
-		return GENPD_DEV_CALLBACK(genpd, int, restore_state, dev);
-
-	return GENPD_DEV_TIMED_CALLBACK(genpd, int, restore_state, dev,
-					restore_state_latency_ns,
-					"state restore");
+	return GENPD_DEV_CALLBACK(genpd, int, restore_state, dev);
 }
 
 static int genpd_dev_pm_qos_notifier(struct notifier_block *nb,
@@ -365,13 +287,14 @@ static int genpd_dev_pm_qos_notifier(struct notifier_block *nb,
 }
 
 /**
- * pm_genpd_poweroff - Remove power from a given PM domain.
+ * genpd_poweroff - Remove power from a given PM domain.
  * @genpd: PM domain to power down.
+ * @is_async: PM domain is powered down from a scheduled work
  *
  * If all of the @genpd's devices have been suspended and all of its subdomains
  * have been powered down, remove power from @genpd.
  */
-static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
+static int genpd_poweroff(struct generic_pm_domain *genpd, bool is_async)
 {
 	struct pm_domain_data *pdd;
 	struct gpd_link *link;
@@ -403,7 +326,7 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
 			not_suspended++;
 	}
 
-	if (not_suspended > genpd->in_progress)
+	if (not_suspended > 1 || (not_suspended == 1 && is_async))
 		return -EBUSY;
 
 	if (genpd->gov && genpd->gov->power_down_ok) {
@@ -411,21 +334,6 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
 			return -EAGAIN;
 	}
 
-	if (genpd->cpuidle_data) {
-		/*
-		 * If cpuidle_data is set, cpuidle should turn the domain off
-		 * when the CPU in it is idle.  In that case we don't decrement
-		 * the subdomain counts of the master domains, so that power is
-		 * not removed from the current domain prematurely as a result
-		 * of cutting off the masters' power.
-		 */
-		genpd->status = GPD_STATE_POWER_OFF;
-		cpuidle_pause_and_lock();
-		genpd->cpuidle_data->idle_state->disabled = false;
-		cpuidle_resume_and_unlock();
-		return 0;
-	}
-
 	if (genpd->power_off) {
 		int ret;
 
@@ -434,10 +342,10 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd)
 
 		/*
 		 * If sd_count > 0 at this point, one of the subdomains hasn't
-		 * managed to call pm_genpd_poweron() for the master yet after
-		 * incrementing it.  In that case pm_genpd_poweron() will wait
+		 * managed to call genpd_poweron() for the master yet after
+		 * incrementing it.  In that case genpd_poweron() will wait
 		 * for us to drop the lock, so we can call .power_off() and let
-		 * the pm_genpd_poweron() restore power for us (this shouldn't
+		 * the genpd_poweron() restore power for us (this shouldn't
 		 * happen very often).
 		 */
 		ret = genpd_power_off(genpd, true);
@@ -466,7 +374,7 @@ static void genpd_power_off_work_fn(struct work_struct *work)
 	genpd = container_of(work, struct generic_pm_domain, power_off_work);
 
 	mutex_lock(&genpd->lock);
-	pm_genpd_poweroff(genpd);
+	genpd_poweroff(genpd, true);
 	mutex_unlock(&genpd->lock);
 }
 
@@ -482,6 +390,9 @@ static int pm_genpd_runtime_suspend(struct device *dev)
 {
 	struct generic_pm_domain *genpd;
 	bool (*stop_ok)(struct device *__dev);
+	struct gpd_timing_data *td = &dev_gpd_data(dev)->td;
+	ktime_t time_start;
+	s64 elapsed_ns;
 	int ret;
 
 	dev_dbg(dev, "%s()\n", __func__);
@@ -494,16 +405,29 @@ static int pm_genpd_runtime_suspend(struct device *dev)
 	if (stop_ok && !stop_ok(dev))
 		return -EBUSY;
 
+	/* Measure suspend latency. */
+	time_start = ktime_get();
+
 	ret = genpd_save_dev(genpd, dev);
 	if (ret)
 		return ret;
 
 	ret = genpd_stop_dev(genpd, dev);
 	if (ret) {
-		genpd_restore_dev(genpd, dev, true);
+		genpd_restore_dev(genpd, dev);
 		return ret;
 	}
 
+	/* Update suspend latency value if the measured time exceeds it. */
+	elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
+	if (elapsed_ns > td->suspend_latency_ns) {
+		td->suspend_latency_ns = elapsed_ns;
+		dev_dbg(dev, "suspend latency exceeded, %lld ns\n",
+			elapsed_ns);
+		genpd->max_off_time_changed = true;
+		td->constraint_changed = true;
+	}
+
 	/*
 	 * If power.irq_safe is set, this routine will be run with interrupts
 	 * off, so it can't use mutexes.
@@ -512,9 +436,7 @@ static int pm_genpd_runtime_suspend(struct device *dev)
 		return 0;
 
 	mutex_lock(&genpd->lock);
-	genpd->in_progress++;
-	pm_genpd_poweroff(genpd);
-	genpd->in_progress--;
+	genpd_poweroff(genpd, false);
 	mutex_unlock(&genpd->lock);
 
 	return 0;
@@ -531,6 +453,9 @@ static int pm_genpd_runtime_suspend(struct device *dev)
 static int pm_genpd_runtime_resume(struct device *dev)
 {
 	struct generic_pm_domain *genpd;
+	struct gpd_timing_data *td = &dev_gpd_data(dev)->td;
+	ktime_t time_start;
+	s64 elapsed_ns;
 	int ret;
 	bool timed = true;
 
@@ -547,15 +472,31 @@ static int pm_genpd_runtime_resume(struct device *dev)
 	}
 
 	mutex_lock(&genpd->lock);
-	ret = __pm_genpd_poweron(genpd);
+	ret = __genpd_poweron(genpd);
 	mutex_unlock(&genpd->lock);
 
 	if (ret)
 		return ret;
 
  out:
-	genpd_start_dev(genpd, dev, timed);
-	genpd_restore_dev(genpd, dev, timed);
+	/* Measure resume latency. */
+	if (timed)
+		time_start = ktime_get();
+
+	genpd_start_dev(genpd, dev);
+	genpd_restore_dev(genpd, dev);
+
+	/* Update resume latency value if the measured time exceeds it. */
+	if (timed) {
+		elapsed_ns = ktime_to_ns(ktime_sub(ktime_get(), time_start));
+		if (elapsed_ns > td->resume_latency_ns) {
+			td->resume_latency_ns = elapsed_ns;
+			dev_dbg(dev, "resume latency exceeded, %lld ns\n",
+				elapsed_ns);
+			genpd->max_off_time_changed = true;
+			td->constraint_changed = true;
+		}
+	}
 
 	return 0;
 }
@@ -569,15 +510,15 @@ static int __init pd_ignore_unused_setup(char *__unused)
 __setup("pd_ignore_unused", pd_ignore_unused_setup);
 
 /**
- * pm_genpd_poweroff_unused - Power off all PM domains with no devices in use.
+ * genpd_poweroff_unused - Power off all PM domains with no devices in use.
  */
-void pm_genpd_poweroff_unused(void)
+static int __init genpd_poweroff_unused(void)
 {
 	struct generic_pm_domain *genpd;
 
 	if (pd_ignore_unused) {
 		pr_warn("genpd: Not disabling unused power domains\n");
-		return;
+		return 0;
 	}
 
 	mutex_lock(&gpd_list_lock);
@@ -586,11 +527,7 @@ void pm_genpd_poweroff_unused(void)
 		genpd_queue_power_off_work(genpd);
 
 	mutex_unlock(&gpd_list_lock);
-}
 
-static int __init genpd_poweroff_unused(void)
-{
-	pm_genpd_poweroff_unused();
 	return 0;
 }
 late_initcall(genpd_poweroff_unused);
@@ -764,7 +701,7 @@ static int pm_genpd_prepare(struct device *dev)
 
 	/*
 	 * The PM domain must be in the GPD_STATE_ACTIVE state at this point,
-	 * so pm_genpd_poweron() will return immediately, but if the device
+	 * so genpd_poweron() will return immediately, but if the device
 	 * is suspended (e.g. it's been stopped by genpd_stop_dev()), we need
 	 * to make it operational.
 	 */
@@ -890,7 +827,7 @@ static int pm_genpd_resume_noirq(struct device *dev)
 	pm_genpd_sync_poweron(genpd, true);
 	genpd->suspended_count--;
 
-	return genpd_start_dev(genpd, dev, true);
+	return genpd_start_dev(genpd, dev);
 }
 
 /**
@@ -1018,7 +955,8 @@ static int pm_genpd_thaw_noirq(struct device *dev)
 	if (IS_ERR(genpd))
 		return -EINVAL;
 
-	return genpd->suspend_power_off ? 0 : genpd_start_dev(genpd, dev, true);
+	return genpd->suspend_power_off ?
+		0 : genpd_start_dev(genpd, dev);
 }
 
 /**
@@ -1112,7 +1050,7 @@ static int pm_genpd_restore_noirq(struct device *dev)
 
 	pm_genpd_sync_poweron(genpd, true);
 
-	return genpd_start_dev(genpd, dev, true);
+	return genpd_start_dev(genpd, dev);
 }
 
 /**
@@ -1317,18 +1255,6 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
 }
 
 /**
- * __pm_genpd_name_add_device - Find I/O PM domain and add a device to it.
- * @domain_name: Name of the PM domain to add the device to.
- * @dev: Device to be added.
- * @td: Set of PM QoS timing parameters to attach to the device.
- */
-int __pm_genpd_name_add_device(const char *domain_name, struct device *dev,
-			       struct gpd_timing_data *td)
-{
-	return __pm_genpd_add_device(pm_genpd_lookup_name(domain_name), dev, td);
-}
-
-/**
  * pm_genpd_remove_device - Remove a device from an I/O PM domain.
  * @genpd: PM domain to remove the device from.
  * @dev: Device to be removed.
@@ -1429,35 +1355,6 @@ int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
 }
 
 /**
- * pm_genpd_add_subdomain_names - Add a subdomain to an I/O PM domain.
- * @master_name: Name of the master PM domain to add the subdomain to.
- * @subdomain_name: Name of the subdomain to be added.
- */
-int pm_genpd_add_subdomain_names(const char *master_name,
-				 const char *subdomain_name)
-{
-	struct generic_pm_domain *master = NULL, *subdomain = NULL, *gpd;
-
-	if (IS_ERR_OR_NULL(master_name) || IS_ERR_OR_NULL(subdomain_name))
-		return -EINVAL;
-
-	mutex_lock(&gpd_list_lock);
-	list_for_each_entry(gpd, &gpd_list, gpd_list_node) {
-		if (!master && !strcmp(gpd->name, master_name))
-			master = gpd;
-
-		if (!subdomain && !strcmp(gpd->name, subdomain_name))
-			subdomain = gpd;
-
-		if (master && subdomain)
-			break;
-	}
-	mutex_unlock(&gpd_list_lock);
-
-	return pm_genpd_add_subdomain(master, subdomain);
-}
-
-/**
  * pm_genpd_remove_subdomain - Remove a subdomain from an I/O PM domain.
  * @genpd: Master PM domain to remove the subdomain from.
  * @subdomain: Subdomain to be removed.
@@ -1504,124 +1401,6 @@ out:
 	return ret;
 }
 
-/**
- * pm_genpd_attach_cpuidle - Connect the given PM domain with cpuidle.
- * @genpd: PM domain to be connected with cpuidle.
- * @state: cpuidle state this domain can disable/enable.
- *
- * Make a PM domain behave as though it contained a CPU core, that is, instead
- * of calling its power down routine it will enable the given cpuidle state so
- * that the cpuidle subsystem can power it down (if possible and desirable).
- */
-int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
-{
-	struct cpuidle_driver *cpuidle_drv;
-	struct gpd_cpuidle_data *cpuidle_data;
-	struct cpuidle_state *idle_state;
-	int ret = 0;
-
-	if (IS_ERR_OR_NULL(genpd) || state < 0)
-		return -EINVAL;
-
-	mutex_lock(&genpd->lock);
-
-	if (genpd->cpuidle_data) {
-		ret = -EEXIST;
-		goto out;
-	}
-	cpuidle_data = kzalloc(sizeof(*cpuidle_data), GFP_KERNEL);
-	if (!cpuidle_data) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	cpuidle_drv = cpuidle_driver_ref();
-	if (!cpuidle_drv) {
-		ret = -ENODEV;
-		goto err_drv;
-	}
-	if (cpuidle_drv->state_count <= state) {
-		ret = -EINVAL;
-		goto err;
-	}
-	idle_state = &cpuidle_drv->states[state];
-	if (!idle_state->disabled) {
-		ret = -EAGAIN;
-		goto err;
-	}
-	cpuidle_data->idle_state = idle_state;
-	cpuidle_data->saved_exit_latency = idle_state->exit_latency;
-	genpd->cpuidle_data = cpuidle_data;
-	genpd_recalc_cpu_exit_latency(genpd);
-
- out:
-	mutex_unlock(&genpd->lock);
-	return ret;
-
- err:
-	cpuidle_driver_unref();
-
- err_drv:
-	kfree(cpuidle_data);
-	goto out;
-}
-
-/**
- * pm_genpd_name_attach_cpuidle - Find PM domain and connect cpuidle to it.
- * @name: Name of the domain to connect to cpuidle.
- * @state: cpuidle state this domain can manipulate.
- */
-int pm_genpd_name_attach_cpuidle(const char *name, int state)
-{
-	return pm_genpd_attach_cpuidle(pm_genpd_lookup_name(name), state);
-}
-
-/**
- * pm_genpd_detach_cpuidle - Remove the cpuidle connection from a PM domain.
- * @genpd: PM domain to remove the cpuidle connection from.
- *
- * Remove the cpuidle connection set up by pm_genpd_attach_cpuidle() from the
- * given PM domain.
- */
-int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
-{
-	struct gpd_cpuidle_data *cpuidle_data;
-	struct cpuidle_state *idle_state;
-	int ret = 0;
-
-	if (IS_ERR_OR_NULL(genpd))
-		return -EINVAL;
-
-	mutex_lock(&genpd->lock);
-
-	cpuidle_data = genpd->cpuidle_data;
-	if (!cpuidle_data) {
-		ret = -ENODEV;
-		goto out;
-	}
-	idle_state = cpuidle_data->idle_state;
-	if (!idle_state->disabled) {
-		ret = -EAGAIN;
-		goto out;
-	}
-	idle_state->exit_latency = cpuidle_data->saved_exit_latency;
-	cpuidle_driver_unref();
-	genpd->cpuidle_data = NULL;
-	kfree(cpuidle_data);
-
- out:
-	mutex_unlock(&genpd->lock);
-	return ret;
-}
-
-/**
- * pm_genpd_name_detach_cpuidle - Find PM domain and disconnect cpuidle from it.
- * @name: Name of the domain to disconnect cpuidle from.
- */
-int pm_genpd_name_detach_cpuidle(const char *name)
-{
-	return pm_genpd_detach_cpuidle(pm_genpd_lookup_name(name));
-}
-
 /* Default device callbacks for generic PM domains. */
 
 /**
@@ -1688,7 +1467,6 @@ void pm_genpd_init(struct generic_pm_domain *genpd,
 	mutex_init(&genpd->lock);
 	genpd->gov = gov;
 	INIT_WORK(&genpd->power_off_work, genpd_power_off_work_fn);
-	genpd->in_progress = 0;
 	atomic_set(&genpd->sd_count, 0);
 	genpd->status = is_off ? GPD_STATE_POWER_OFF : GPD_STATE_ACTIVE;
 	genpd->device_count = 0;
@@ -2023,7 +1801,7 @@ int genpd_dev_pm_attach(struct device *dev)
 
 	dev->pm_domain->detach = genpd_dev_pm_detach;
 	dev->pm_domain->sync = genpd_dev_pm_sync;
-	ret = pm_genpd_poweron(pd);
+	ret = genpd_poweron(pd);
 
 out:
 	return ret ? -EPROBE_DEFER : 0;
diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c
index 85e17bacc834..e60dd12e23aa 100644
--- a/drivers/base/power/domain_governor.c
+++ b/drivers/base/power/domain_governor.c
@@ -77,10 +77,8 @@ static bool default_stop_ok(struct device *dev)
 				      dev_update_qos_constraint);
 
 	if (constraint_ns > 0) {
-		constraint_ns -= td->save_state_latency_ns +
-				td->stop_latency_ns +
-				td->start_latency_ns +
-				td->restore_state_latency_ns;
+		constraint_ns -= td->suspend_latency_ns +
+				td->resume_latency_ns;
 		if (constraint_ns == 0)
 			return false;
 	}
diff --git a/drivers/base/power/generic_ops.c b/drivers/base/power/generic_ops.c
index 96a92db83cad..07c3c4a9522d 100644
--- a/drivers/base/power/generic_ops.c
+++ b/drivers/base/power/generic_ops.c
@@ -9,6 +9,7 @@
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
 #include <linux/export.h>
+#include <linux/suspend.h>
 
 #ifdef CONFIG_PM
 /**
@@ -296,11 +297,27 @@ void pm_generic_complete(struct device *dev)
 
 	if (drv && drv->pm && drv->pm->complete)
 		drv->pm->complete(dev);
+}
 
+/**
+ * pm_complete_with_resume_check - Complete a device power transition.
+ * @dev: Device to handle.
+ *
+ * Complete a device power transition during a system-wide power transition and
+ * optionally schedule a runtime resume of the device if the system resume in
+ * progress has been initated by the platform firmware and the device had its
+ * power.direct_complete flag set.
+ */
+void pm_complete_with_resume_check(struct device *dev)
+{
+	pm_generic_complete(dev);
 	/*
-	 * Let runtime PM try to suspend devices that haven't been in use before
-	 * going into the system-wide sleep state we're resuming from.
+	 * If the device had been runtime-suspended before the system went into
+	 * the sleep state it is going out of and it has never been resumed till
+	 * now, resume it in case the firmware powered it up.
 	 */
-	pm_request_idle(dev);
+	if (dev->power.direct_complete && pm_resume_via_firmware())
+		pm_request_resume(dev);
 }
+EXPORT_SYMBOL_GPL(pm_complete_with_resume_check);
 #endif /* CONFIG_PM_SLEEP */
diff --git a/drivers/base/power/opp/Makefile b/drivers/base/power/opp/Makefile
new file mode 100644
index 000000000000..33c1e18c41a4
--- /dev/null
+++ b/drivers/base/power/opp/Makefile
@@ -0,0 +1,2 @@
+ccflags-$(CONFIG_DEBUG_DRIVER)	:= -DDEBUG
+obj-y				+= core.o cpu.o
diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp/core.c
index 7ae7cd990fbf..d5c1149ff123 100644
--- a/drivers/base/power/opp.c
+++ b/drivers/base/power/opp/core.c
@@ -11,131 +11,14 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/cpu.h>
-#include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/device.h>
-#include <linux/list.h>
-#include <linux/rculist.h>
-#include <linux/rcupdate.h>
-#include <linux/pm_opp.h>
 #include <linux/of.h>
 #include <linux/export.h>
 
-/*
- * Internal data structure organization with the OPP layer library is as
- * follows:
- * dev_opp_list (root)
- *	|- device 1 (represents voltage domain 1)
- *	|	|- opp 1 (availability, freq, voltage)
- *	|	|- opp 2 ..
- *	...	...
- *	|	`- opp n ..
- *	|- device 2 (represents the next voltage domain)
- *	...
- *	`- device m (represents mth voltage domain)
- * device 1, 2.. are represented by dev_opp structure while each opp
- * is represented by the opp structure.
- */
-
-/**
- * struct dev_pm_opp - Generic OPP description structure
- * @node:	opp list node. The nodes are maintained throughout the lifetime
- *		of boot. It is expected only an optimal set of OPPs are
- *		added to the library by the SoC framework.
- *		RCU usage: opp list is traversed with RCU locks. node
- *		modification is possible realtime, hence the modifications
- *		are protected by the dev_opp_list_lock for integrity.
- *		IMPORTANT: the opp nodes should be maintained in increasing
- *		order.
- * @dynamic:	not-created from static DT entries.
- * @available:	true/false - marks if this OPP as available or not
- * @turbo:	true if turbo (boost) OPP
- * @rate:	Frequency in hertz
- * @u_volt:	Target voltage in microvolts corresponding to this OPP
- * @u_volt_min:	Minimum voltage in microvolts corresponding to this OPP
- * @u_volt_max:	Maximum voltage in microvolts corresponding to this OPP
- * @u_amp:	Maximum current drawn by the device in microamperes
- * @clock_latency_ns: Latency (in nanoseconds) of switching to this OPP's
- *		frequency from any other OPP's frequency.
- * @dev_opp:	points back to the device_opp struct this opp belongs to
- * @rcu_head:	RCU callback head used for deferred freeing
- * @np:		OPP's device node.
- *
- * This structure stores the OPP information for a given device.
- */
-struct dev_pm_opp {
-	struct list_head node;
-
-	bool available;
-	bool dynamic;
-	bool turbo;
-	unsigned long rate;
-
-	unsigned long u_volt;
-	unsigned long u_volt_min;
-	unsigned long u_volt_max;
-	unsigned long u_amp;
-	unsigned long clock_latency_ns;
-
-	struct device_opp *dev_opp;
-	struct rcu_head rcu_head;
-
-	struct device_node *np;
-};
-
-/**
- * struct device_list_opp - devices managed by 'struct device_opp'
- * @node:	list node
- * @dev:	device to which the struct object belongs
- * @rcu_head:	RCU callback head used for deferred freeing
- *
- * This is an internal data structure maintaining the list of devices that are
- * managed by 'struct device_opp'.
- */
-struct device_list_opp {
-	struct list_head node;
-	const struct device *dev;
-	struct rcu_head rcu_head;
-};
-
-/**
- * struct device_opp - Device opp structure
- * @node:	list node - contains the devices with OPPs that
- *		have been registered. Nodes once added are not modified in this
- *		list.
- *		RCU usage: nodes are not modified in the list of device_opp,
- *		however addition is possible and is secured by dev_opp_list_lock
- * @srcu_head:	notifier head to notify the OPP availability changes.
- * @rcu_head:	RCU callback head used for deferred freeing
- * @dev_list:	list of devices that share these OPPs
- * @opp_list:	list of opps
- * @np:		struct device_node pointer for opp's DT node.
- * @shared_opp: OPP is shared between multiple devices.
- *
- * This is an internal data structure maintaining the link to opps attached to
- * a device. This structure is not meant to be shared to users as it is
- * meant for book keeping and private to OPP library.
- *
- * Because the opp structures can be used from both rcu and srcu readers, we
- * need to wait for the grace period of both of them before freeing any
- * resources. And so we have used kfree_rcu() from within call_srcu() handlers.
- */
-struct device_opp {
-	struct list_head node;
-
-	struct srcu_notifier_head srcu_head;
-	struct rcu_head rcu_head;
-	struct list_head dev_list;
-	struct list_head opp_list;
-
-	struct device_node *np;
-	unsigned long clock_latency_ns_max;
-	bool shared_opp;
-	struct dev_pm_opp *suspend_opp;
-};
+#include "opp.h"
 
 /*
  * The root of the list of all devices. All device_opp structures branch off
@@ -200,7 +83,7 @@ static struct device_opp *_managed_opp(const struct device_node *np)
  * is a RCU protected pointer. This means that device_opp is valid as long
  * as we are under RCU lock.
  */
-static struct device_opp *_find_device_opp(struct device *dev)
+struct device_opp *_find_device_opp(struct device *dev)
 {
 	struct device_opp *dev_opp;
 
@@ -579,8 +462,8 @@ static void _remove_list_dev(struct device_list_opp *list_dev,
 		  _kfree_list_dev_rcu);
 }
 
-static struct device_list_opp *_add_list_dev(const struct device *dev,
-					     struct device_opp *dev_opp)
+struct device_list_opp *_add_list_dev(const struct device *dev,
+				      struct device_opp *dev_opp)
 {
 	struct device_list_opp *list_dev;
 
@@ -828,8 +711,8 @@ static int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
  * The opp is made available by default and it can be controlled using
  * dev_pm_opp_enable/disable functions and may be removed by dev_pm_opp_remove.
  *
- * NOTE: "dynamic" parameter impacts OPPs added by the of_init_opp_table and
- * freed by of_free_opp_table.
+ * NOTE: "dynamic" parameter impacts OPPs added by the dev_pm_opp_of_add_table
+ * and freed by dev_pm_opp_of_remove_table.
  *
  * Locking: The internal device_opp and opp structures are RCU protected.
  * Hence this function internally uses RCU updater strategy with mutex locks
@@ -1220,7 +1103,8 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_notifier);
 
 #ifdef CONFIG_OF
 /**
- * of_free_opp_table() - Free OPP table entries created from static DT entries
+ * dev_pm_opp_of_remove_table() - Free OPP table entries created from static DT
+ *				  entries
  * @dev:	device pointer used to lookup device OPPs.
  *
  * Free OPPs created using static entries present in DT.
@@ -1231,7 +1115,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_notifier);
  * that this function is *NOT* called under RCU protection or in contexts where
  * mutex cannot be locked.
  */
-void of_free_opp_table(struct device *dev)
+void dev_pm_opp_of_remove_table(struct device *dev)
 {
 	struct device_opp *dev_opp;
 	struct dev_pm_opp *opp, *tmp;
@@ -1266,91 +1150,34 @@ void of_free_opp_table(struct device *dev)
 unlock:
 	mutex_unlock(&dev_opp_list_lock);
 }
-EXPORT_SYMBOL_GPL(of_free_opp_table);
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
 
-void of_cpumask_free_opp_table(cpumask_var_t cpumask)
+/* Returns opp descriptor node for a device, caller must do of_node_put() */
+struct device_node *_of_get_opp_desc_node(struct device *dev)
 {
-	struct device *cpu_dev;
-	int cpu;
-
-	WARN_ON(cpumask_empty(cpumask));
-
-	for_each_cpu(cpu, cpumask) {
-		cpu_dev = get_cpu_device(cpu);
-		if (!cpu_dev) {
-			pr_err("%s: failed to get cpu%d device\n", __func__,
-			       cpu);
-			continue;
-		}
-
-		of_free_opp_table(cpu_dev);
-	}
-}
-EXPORT_SYMBOL_GPL(of_cpumask_free_opp_table);
-
-/* Returns opp descriptor node from its phandle. Caller must do of_node_put() */
-static struct device_node *
-_of_get_opp_desc_node_from_prop(struct device *dev, const struct property *prop)
-{
-	struct device_node *opp_np;
-
-	opp_np = of_find_node_by_phandle(be32_to_cpup(prop->value));
-	if (!opp_np) {
-		dev_err(dev, "%s: Prop: %s contains invalid opp desc phandle\n",
-			__func__, prop->name);
-		return ERR_PTR(-EINVAL);
-	}
-
-	return opp_np;
-}
-
-/* Returns opp descriptor node for a device. Caller must do of_node_put() */
-static struct device_node *_of_get_opp_desc_node(struct device *dev)
-{
-	const struct property *prop;
-
-	prop = of_find_property(dev->of_node, "operating-points-v2", NULL);
-	if (!prop)
-		return ERR_PTR(-ENODEV);
-	if (!prop->value)
-		return ERR_PTR(-ENODATA);
-
 	/*
 	 * TODO: Support for multiple OPP tables.
 	 *
 	 * There should be only ONE phandle present in "operating-points-v2"
 	 * property.
 	 */
-	if (prop->length != sizeof(__be32)) {
-		dev_err(dev, "%s: Invalid opp desc phandle\n", __func__);
-		return ERR_PTR(-EINVAL);
-	}
 
-	return _of_get_opp_desc_node_from_prop(dev, prop);
+	return of_parse_phandle(dev->of_node, "operating-points-v2", 0);
 }
 
 /* Initializes OPP tables based on new bindings */
-static int _of_init_opp_table_v2(struct device *dev,
-				 const struct property *prop)
+static int _of_add_opp_table_v2(struct device *dev, struct device_node *opp_np)
 {
-	struct device_node *opp_np, *np;
+	struct device_node *np;
 	struct device_opp *dev_opp;
 	int ret = 0, count = 0;
 
-	if (!prop->value)
-		return -ENODATA;
-
-	/* Get opp node */
-	opp_np = _of_get_opp_desc_node_from_prop(dev, prop);
-	if (IS_ERR(opp_np))
-		return PTR_ERR(opp_np);
-
 	dev_opp = _managed_opp(opp_np);
 	if (dev_opp) {
 		/* OPPs are already managed */
 		if (!_add_list_dev(dev, dev_opp))
 			ret = -ENOMEM;
-		goto put_opp_np;
+		return ret;
 	}
 
 	/* We have opp-list node now, iterate over it and add OPPs */
@@ -1366,10 +1193,8 @@ static int _of_init_opp_table_v2(struct device *dev,
 	}
 
 	/* There should be one of more OPP defined */
-	if (WARN_ON(!count)) {
-		ret = -ENOENT;
-		goto put_opp_np;
-	}
+	if (WARN_ON(!count))
+		return -ENOENT;
 
 	dev_opp = _find_device_opp(dev);
 	if (WARN_ON(IS_ERR(dev_opp))) {
@@ -1380,19 +1205,16 @@ static int _of_init_opp_table_v2(struct device *dev,
 	dev_opp->np = opp_np;
 	dev_opp->shared_opp = of_property_read_bool(opp_np, "opp-shared");
 
-	of_node_put(opp_np);
 	return 0;
 
 free_table:
-	of_free_opp_table(dev);
-put_opp_np:
-	of_node_put(opp_np);
+	dev_pm_opp_of_remove_table(dev);
 
 	return ret;
 }
 
 /* Initializes OPP tables based on old-deprecated bindings */
-static int _of_init_opp_table_v1(struct device *dev)
+static int _of_add_opp_table_v1(struct device *dev)
 {
 	const struct property *prop;
 	const __be32 *val;
@@ -1429,7 +1251,7 @@ static int _of_init_opp_table_v1(struct device *dev)
 }
 
 /**
- * of_init_opp_table() - Initialize opp table from device tree
+ * dev_pm_opp_of_add_table() - Initialize opp table from device tree
  * @dev:	device pointer used to lookup device OPPs.
  *
  * Register the initial OPP table with the OPP library for given device.
@@ -1451,153 +1273,28 @@ static int _of_init_opp_table_v1(struct device *dev)
  * -ENODATA	when empty 'operating-points' property is found
  * -EINVAL	when invalid entries are found in opp-v2 table
  */
-int of_init_opp_table(struct device *dev)
+int dev_pm_opp_of_add_table(struct device *dev)
 {
-	const struct property *prop;
+	struct device_node *opp_np;
+	int ret;
 
 	/*
 	 * OPPs have two version of bindings now. The older one is deprecated,
 	 * try for the new binding first.
 	 */
-	prop = of_find_property(dev->of_node, "operating-points-v2", NULL);
-	if (!prop) {
+	opp_np = _of_get_opp_desc_node(dev);
+	if (!opp_np) {
 		/*
 		 * Try old-deprecated bindings for backward compatibility with
 		 * older dtbs.
 		 */
-		return _of_init_opp_table_v1(dev);
-	}
-
-	return _of_init_opp_table_v2(dev, prop);
-}
-EXPORT_SYMBOL_GPL(of_init_opp_table);
-
-int of_cpumask_init_opp_table(cpumask_var_t cpumask)
-{
-	struct device *cpu_dev;
-	int cpu, ret = 0;
-
-	WARN_ON(cpumask_empty(cpumask));
-
-	for_each_cpu(cpu, cpumask) {
-		cpu_dev = get_cpu_device(cpu);
-		if (!cpu_dev) {
-			pr_err("%s: failed to get cpu%d device\n", __func__,
-			       cpu);
-			continue;
-		}
-
-		ret = of_init_opp_table(cpu_dev);
-		if (ret) {
-			pr_err("%s: couldn't find opp table for cpu:%d, %d\n",
-			       __func__, cpu, ret);
-
-			/* Free all other OPPs */
-			of_cpumask_free_opp_table(cpumask);
-			break;
-		}
+		return _of_add_opp_table_v1(dev);
 	}
 
-	return ret;
-}
-EXPORT_SYMBOL_GPL(of_cpumask_init_opp_table);
-
-/* Required only for V1 bindings, as v2 can manage it from DT itself */
-int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask)
-{
-	struct device_list_opp *list_dev;
-	struct device_opp *dev_opp;
-	struct device *dev;
-	int cpu, ret = 0;
-
-	rcu_read_lock();
-
-	dev_opp = _find_device_opp(cpu_dev);
-	if (IS_ERR(dev_opp)) {
-		ret = -EINVAL;
-		goto out_rcu_read_unlock;
-	}
-
-	for_each_cpu(cpu, cpumask) {
-		if (cpu == cpu_dev->id)
-			continue;
-
-		dev = get_cpu_device(cpu);
-		if (!dev) {
-			dev_err(cpu_dev, "%s: failed to get cpu%d device\n",
-				__func__, cpu);
-			continue;
-		}
-
-		list_dev = _add_list_dev(dev, dev_opp);
-		if (!list_dev) {
-			dev_err(dev, "%s: failed to add list-dev for cpu%d device\n",
-				__func__, cpu);
-			continue;
-		}
-	}
-out_rcu_read_unlock:
-	rcu_read_unlock();
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(set_cpus_sharing_opps);
-
-/*
- * Works only for OPP v2 bindings.
- *
- * cpumask should be already set to mask of cpu_dev->id.
- * Returns -ENOENT if operating-points-v2 bindings aren't supported.
- */
-int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask)
-{
-	struct device_node *np, *tmp_np;
-	struct device *tcpu_dev;
-	int cpu, ret = 0;
-
-	/* Get OPP descriptor node */
-	np = _of_get_opp_desc_node(cpu_dev);
-	if (IS_ERR(np)) {
-		dev_dbg(cpu_dev, "%s: Couldn't find opp node: %ld\n", __func__,
-			PTR_ERR(np));
-		return -ENOENT;
-	}
-
-	/* OPPs are shared ? */
-	if (!of_property_read_bool(np, "opp-shared"))
-		goto put_cpu_node;
-
-	for_each_possible_cpu(cpu) {
-		if (cpu == cpu_dev->id)
-			continue;
-
-		tcpu_dev = get_cpu_device(cpu);
-		if (!tcpu_dev) {
-			dev_err(cpu_dev, "%s: failed to get cpu%d device\n",
-				__func__, cpu);
-			ret = -ENODEV;
-			goto put_cpu_node;
-		}
-
-		/* Get OPP descriptor node */
-		tmp_np = _of_get_opp_desc_node(tcpu_dev);
-		if (IS_ERR(tmp_np)) {
-			dev_err(tcpu_dev, "%s: Couldn't find opp node: %ld\n",
-				__func__, PTR_ERR(tmp_np));
-			ret = PTR_ERR(tmp_np);
-			goto put_cpu_node;
-		}
-
-		/* CPUs are sharing opp node */
-		if (np == tmp_np)
-			cpumask_set_cpu(cpu, cpumask);
-
-		of_node_put(tmp_np);
-	}
+	ret = _of_add_opp_table_v2(dev, opp_np);
+	of_node_put(opp_np);
 
-put_cpu_node:
-	of_node_put(np);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(of_get_cpus_sharing_opps);
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);
 #endif
diff --git a/drivers/base/power/opp/cpu.c b/drivers/base/power/opp/cpu.c
new file mode 100644
index 000000000000..7654c5606307
--- /dev/null
+++ b/drivers/base/power/opp/cpu.c
@@ -0,0 +1,267 @@
+/*
+ * Generic OPP helper interface for CPU device
+ *
+ * Copyright (C) 2009-2014 Texas Instruments Incorporated.
+ *	Nishanth Menon
+ *	Romit Dasgupta
+ *	Kevin Hilman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/cpu.h>
+#include <linux/cpufreq.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+#include "opp.h"
+
+#ifdef CONFIG_CPU_FREQ
+
+/**
+ * dev_pm_opp_init_cpufreq_table() - create a cpufreq table for a device
+ * @dev:	device for which we do this operation
+ * @table:	Cpufreq table returned back to caller
+ *
+ * Generate a cpufreq table for a provided device- this assumes that the
+ * opp list is already initialized and ready for usage.
+ *
+ * This function allocates required memory for the cpufreq table. It is
+ * expected that the caller does the required maintenance such as freeing
+ * the table as required.
+ *
+ * Returns -EINVAL for bad pointers, -ENODEV if the device is not found, -ENOMEM
+ * if no memory available for the operation (table is not populated), returns 0
+ * if successful and table is populated.
+ *
+ * WARNING: It is  important for the callers to ensure refreshing their copy of
+ * the table if any of the mentioned functions have been invoked in the interim.
+ *
+ * Locking: The internal device_opp and opp structures are RCU protected.
+ * Since we just use the regular accessor functions to access the internal data
+ * structures, we use RCU read lock inside this function. As a result, users of
+ * this function DONOT need to use explicit locks for invoking.
+ */
+int dev_pm_opp_init_cpufreq_table(struct device *dev,
+				  struct cpufreq_frequency_table **table)
+{
+	struct dev_pm_opp *opp;
+	struct cpufreq_frequency_table *freq_table = NULL;
+	int i, max_opps, ret = 0;
+	unsigned long rate;
+
+	rcu_read_lock();
+
+	max_opps = dev_pm_opp_get_opp_count(dev);
+	if (max_opps <= 0) {
+		ret = max_opps ? max_opps : -ENODATA;
+		goto out;
+	}
+
+	freq_table = kcalloc((max_opps + 1), sizeof(*freq_table), GFP_ATOMIC);
+	if (!freq_table) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	for (i = 0, rate = 0; i < max_opps; i++, rate++) {
+		/* find next rate */
+		opp = dev_pm_opp_find_freq_ceil(dev, &rate);
+		if (IS_ERR(opp)) {
+			ret = PTR_ERR(opp);
+			goto out;
+		}
+		freq_table[i].driver_data = i;
+		freq_table[i].frequency = rate / 1000;
+
+		/* Is Boost/turbo opp ? */
+		if (dev_pm_opp_is_turbo(opp))
+			freq_table[i].flags = CPUFREQ_BOOST_FREQ;
+	}
+
+	freq_table[i].driver_data = i;
+	freq_table[i].frequency = CPUFREQ_TABLE_END;
+
+	*table = &freq_table[0];
+
+out:
+	rcu_read_unlock();
+	if (ret)
+		kfree(freq_table);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_init_cpufreq_table);
+
+/**
+ * dev_pm_opp_free_cpufreq_table() - free the cpufreq table
+ * @dev:	device for which we do this operation
+ * @table:	table to free
+ *
+ * Free up the table allocated by dev_pm_opp_init_cpufreq_table
+ */
+void dev_pm_opp_free_cpufreq_table(struct device *dev,
+				   struct cpufreq_frequency_table **table)
+{
+	if (!table)
+		return;
+
+	kfree(*table);
+	*table = NULL;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_free_cpufreq_table);
+#endif	/* CONFIG_CPU_FREQ */
+
+/* Required only for V1 bindings, as v2 can manage it from DT itself */
+int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
+{
+	struct device_list_opp *list_dev;
+	struct device_opp *dev_opp;
+	struct device *dev;
+	int cpu, ret = 0;
+
+	rcu_read_lock();
+
+	dev_opp = _find_device_opp(cpu_dev);
+	if (IS_ERR(dev_opp)) {
+		ret = -EINVAL;
+		goto out_rcu_read_unlock;
+	}
+
+	for_each_cpu(cpu, cpumask) {
+		if (cpu == cpu_dev->id)
+			continue;
+
+		dev = get_cpu_device(cpu);
+		if (!dev) {
+			dev_err(cpu_dev, "%s: failed to get cpu%d device\n",
+				__func__, cpu);
+			continue;
+		}
+
+		list_dev = _add_list_dev(dev, dev_opp);
+		if (!list_dev) {
+			dev_err(dev, "%s: failed to add list-dev for cpu%d device\n",
+				__func__, cpu);
+			continue;
+		}
+	}
+out_rcu_read_unlock:
+	rcu_read_unlock();
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_set_sharing_cpus);
+
+#ifdef CONFIG_OF
+void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask)
+{
+	struct device *cpu_dev;
+	int cpu;
+
+	WARN_ON(cpumask_empty(cpumask));
+
+	for_each_cpu(cpu, cpumask) {
+		cpu_dev = get_cpu_device(cpu);
+		if (!cpu_dev) {
+			pr_err("%s: failed to get cpu%d device\n", __func__,
+			       cpu);
+			continue;
+		}
+
+		dev_pm_opp_of_remove_table(cpu_dev);
+	}
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_cpumask_remove_table);
+
+int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask)
+{
+	struct device *cpu_dev;
+	int cpu, ret = 0;
+
+	WARN_ON(cpumask_empty(cpumask));
+
+	for_each_cpu(cpu, cpumask) {
+		cpu_dev = get_cpu_device(cpu);
+		if (!cpu_dev) {
+			pr_err("%s: failed to get cpu%d device\n", __func__,
+			       cpu);
+			continue;
+		}
+
+		ret = dev_pm_opp_of_add_table(cpu_dev);
+		if (ret) {
+			pr_err("%s: couldn't find opp table for cpu:%d, %d\n",
+			       __func__, cpu, ret);
+
+			/* Free all other OPPs */
+			dev_pm_opp_of_cpumask_remove_table(cpumask);
+			break;
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_cpumask_add_table);
+
+/*
+ * Works only for OPP v2 bindings.
+ *
+ * cpumask should be already set to mask of cpu_dev->id.
+ * Returns -ENOENT if operating-points-v2 bindings aren't supported.
+ */
+int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
+{
+	struct device_node *np, *tmp_np;
+	struct device *tcpu_dev;
+	int cpu, ret = 0;
+
+	/* Get OPP descriptor node */
+	np = _of_get_opp_desc_node(cpu_dev);
+	if (!np) {
+		dev_dbg(cpu_dev, "%s: Couldn't find cpu_dev node.\n", __func__);
+		return -ENOENT;
+	}
+
+	/* OPPs are shared ? */
+	if (!of_property_read_bool(np, "opp-shared"))
+		goto put_cpu_node;
+
+	for_each_possible_cpu(cpu) {
+		if (cpu == cpu_dev->id)
+			continue;
+
+		tcpu_dev = get_cpu_device(cpu);
+		if (!tcpu_dev) {
+			dev_err(cpu_dev, "%s: failed to get cpu%d device\n",
+				__func__, cpu);
+			ret = -ENODEV;
+			goto put_cpu_node;
+		}
+
+		/* Get OPP descriptor node */
+		tmp_np = _of_get_opp_desc_node(tcpu_dev);
+		if (!tmp_np) {
+			dev_err(tcpu_dev, "%s: Couldn't find tcpu_dev node.\n",
+				__func__);
+			ret = -ENOENT;
+			goto put_cpu_node;
+		}
+
+		/* CPUs are sharing opp node */
+		if (np == tmp_np)
+			cpumask_set_cpu(cpu, cpumask);
+
+		of_node_put(tmp_np);
+	}
+
+put_cpu_node:
+	of_node_put(np);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_sharing_cpus);
+#endif
diff --git a/drivers/base/power/opp/opp.h b/drivers/base/power/opp/opp.h
new file mode 100644
index 000000000000..dcb38f78dae4
--- /dev/null
+++ b/drivers/base/power/opp/opp.h
@@ -0,0 +1,143 @@
+/*
+ * Generic OPP Interface
+ *
+ * Copyright (C) 2009-2010 Texas Instruments Incorporated.
+ *	Nishanth Menon
+ *	Romit Dasgupta
+ *	Kevin Hilman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __DRIVER_OPP_H__
+#define __DRIVER_OPP_H__
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/pm_opp.h>
+#include <linux/rculist.h>
+#include <linux/rcupdate.h>
+
+/*
+ * Internal data structure organization with the OPP layer library is as
+ * follows:
+ * dev_opp_list (root)
+ *	|- device 1 (represents voltage domain 1)
+ *	|	|- opp 1 (availability, freq, voltage)
+ *	|	|- opp 2 ..
+ *	...	...
+ *	|	`- opp n ..
+ *	|- device 2 (represents the next voltage domain)
+ *	...
+ *	`- device m (represents mth voltage domain)
+ * device 1, 2.. are represented by dev_opp structure while each opp
+ * is represented by the opp structure.
+ */
+
+/**
+ * struct dev_pm_opp - Generic OPP description structure
+ * @node:	opp list node. The nodes are maintained throughout the lifetime
+ *		of boot. It is expected only an optimal set of OPPs are
+ *		added to the library by the SoC framework.
+ *		RCU usage: opp list is traversed with RCU locks. node
+ *		modification is possible realtime, hence the modifications
+ *		are protected by the dev_opp_list_lock for integrity.
+ *		IMPORTANT: the opp nodes should be maintained in increasing
+ *		order.
+ * @dynamic:	not-created from static DT entries.
+ * @available:	true/false - marks if this OPP as available or not
+ * @turbo:	true if turbo (boost) OPP
+ * @rate:	Frequency in hertz
+ * @u_volt:	Target voltage in microvolts corresponding to this OPP
+ * @u_volt_min:	Minimum voltage in microvolts corresponding to this OPP
+ * @u_volt_max:	Maximum voltage in microvolts corresponding to this OPP
+ * @u_amp:	Maximum current drawn by the device in microamperes
+ * @clock_latency_ns: Latency (in nanoseconds) of switching to this OPP's
+ *		frequency from any other OPP's frequency.
+ * @dev_opp:	points back to the device_opp struct this opp belongs to
+ * @rcu_head:	RCU callback head used for deferred freeing
+ * @np:		OPP's device node.
+ *
+ * This structure stores the OPP information for a given device.
+ */
+struct dev_pm_opp {
+	struct list_head node;
+
+	bool available;
+	bool dynamic;
+	bool turbo;
+	unsigned long rate;
+
+	unsigned long u_volt;
+	unsigned long u_volt_min;
+	unsigned long u_volt_max;
+	unsigned long u_amp;
+	unsigned long clock_latency_ns;
+
+	struct device_opp *dev_opp;
+	struct rcu_head rcu_head;
+
+	struct device_node *np;
+};
+
+/**
+ * struct device_list_opp - devices managed by 'struct device_opp'
+ * @node:	list node
+ * @dev:	device to which the struct object belongs
+ * @rcu_head:	RCU callback head used for deferred freeing
+ *
+ * This is an internal data structure maintaining the list of devices that are
+ * managed by 'struct device_opp'.
+ */
+struct device_list_opp {
+	struct list_head node;
+	const struct device *dev;
+	struct rcu_head rcu_head;
+};
+
+/**
+ * struct device_opp - Device opp structure
+ * @node:	list node - contains the devices with OPPs that
+ *		have been registered. Nodes once added are not modified in this
+ *		list.
+ *		RCU usage: nodes are not modified in the list of device_opp,
+ *		however addition is possible and is secured by dev_opp_list_lock
+ * @srcu_head:	notifier head to notify the OPP availability changes.
+ * @rcu_head:	RCU callback head used for deferred freeing
+ * @dev_list:	list of devices that share these OPPs
+ * @opp_list:	list of opps
+ * @np:		struct device_node pointer for opp's DT node.
+ * @shared_opp: OPP is shared between multiple devices.
+ *
+ * This is an internal data structure maintaining the link to opps attached to
+ * a device. This structure is not meant to be shared to users as it is
+ * meant for book keeping and private to OPP library.
+ *
+ * Because the opp structures can be used from both rcu and srcu readers, we
+ * need to wait for the grace period of both of them before freeing any
+ * resources. And so we have used kfree_rcu() from within call_srcu() handlers.
+ */
+struct device_opp {
+	struct list_head node;
+
+	struct srcu_notifier_head srcu_head;
+	struct rcu_head rcu_head;
+	struct list_head dev_list;
+	struct list_head opp_list;
+
+	struct device_node *np;
+	unsigned long clock_latency_ns_max;
+	bool shared_opp;
+	struct dev_pm_opp *suspend_opp;
+};
+
+/* Routines internal to opp core */
+struct device_opp *_find_device_opp(struct device *dev);
+struct device_list_opp *_add_list_dev(const struct device *dev,
+				      struct device_opp *dev_opp);
+struct device_node *_of_get_opp_desc_node(struct device *dev);
+
+#endif		/* __DRIVER_OPP_H__ */
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 51f15bc15774..a1e0b9ab847a 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -25,6 +25,9 @@
  */
 bool events_check_enabled __read_mostly;
 
+/* First wakeup IRQ seen by the kernel in the last cycle. */
+unsigned int pm_wakeup_irq __read_mostly;
+
 /* If set and the system is suspending, terminate the suspend. */
 static bool pm_abort_suspend __read_mostly;
 
@@ -91,7 +94,7 @@ struct wakeup_source *wakeup_source_create(const char *name)
 	if (!ws)
 		return NULL;
 
-	wakeup_source_prepare(ws, name ? kstrdup(name, GFP_KERNEL) : NULL);
+	wakeup_source_prepare(ws, name ? kstrdup_const(name, GFP_KERNEL) : NULL);
 	return ws;
 }
 EXPORT_SYMBOL_GPL(wakeup_source_create);
@@ -154,7 +157,7 @@ void wakeup_source_destroy(struct wakeup_source *ws)
 
 	wakeup_source_drop(ws);
 	wakeup_source_record(ws);
-	kfree(ws->name);
+	kfree_const(ws->name);
 	kfree(ws);
 }
 EXPORT_SYMBOL_GPL(wakeup_source_destroy);
@@ -868,6 +871,15 @@ EXPORT_SYMBOL_GPL(pm_system_wakeup);
 void pm_wakeup_clear(void)
 {
 	pm_abort_suspend = false;
+	pm_wakeup_irq = 0;
+}
+
+void pm_system_irq_wakeup(unsigned int irq_number)
+{
+	if (pm_wakeup_irq == 0) {
+		pm_wakeup_irq = irq_number;
+		pm_system_wakeup();
+	}
 }
 
 /**
diff --git a/drivers/base/property.c b/drivers/base/property.c
index 2d75366c61e0..de40623bbd8a 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -134,7 +134,7 @@ bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname)
 	if (is_of_node(fwnode))
 		return of_property_read_bool(to_of_node(fwnode), propname);
 	else if (is_acpi_node(fwnode))
-		return !acpi_dev_prop_get(to_acpi_node(fwnode), propname, NULL);
+		return !acpi_node_prop_get(fwnode, propname, NULL);
 
 	return !!pset_prop_get(to_pset(fwnode), propname);
 }
@@ -287,6 +287,28 @@ int device_property_read_string(struct device *dev, const char *propname,
 }
 EXPORT_SYMBOL_GPL(device_property_read_string);
 
+/**
+ * device_property_match_string - find a string in an array and return index
+ * @dev: Device to get the property of
+ * @propname: Name of the property holding the array
+ * @string: String to look for
+ *
+ * Find a given string in a string array and if it is found return the
+ * index back.
+ *
+ * Return: %0 if the property was found (success),
+ *	   %-EINVAL if given arguments are not valid,
+ *	   %-ENODATA if the property does not have a value,
+ *	   %-EPROTO if the property is not an array of strings,
+ *	   %-ENXIO if no suitable firmware interface is present.
+ */
+int device_property_match_string(struct device *dev, const char *propname,
+				 const char *string)
+{
+	return fwnode_property_match_string(dev_fwnode(dev), propname, string);
+}
+EXPORT_SYMBOL_GPL(device_property_match_string);
+
 #define OF_DEV_PROP_READ_ARRAY(node, propname, type, val, nval) \
 	(val) ? of_property_read_##type##_array((node), (propname), (val), (nval)) \
 	      : of_property_count_elems_of_size((node), (propname), sizeof(type))
@@ -298,8 +320,8 @@ EXPORT_SYMBOL_GPL(device_property_read_string);
 		_ret_ = OF_DEV_PROP_READ_ARRAY(to_of_node(_fwnode_), _propname_, \
 					       _type_, _val_, _nval_); \
 	else if (is_acpi_node(_fwnode_)) \
-		_ret_ = acpi_dev_prop_read(to_acpi_node(_fwnode_), _propname_, \
-					   _proptype_, _val_, _nval_); \
+		_ret_ = acpi_node_prop_read(_fwnode_, _propname_, _proptype_, \
+					    _val_, _nval_); \
 	else if (is_pset(_fwnode_)) \
 		_ret_ = pset_prop_read_array(to_pset(_fwnode_), _propname_, \
 					     _proptype_, _val_, _nval_); \
@@ -440,8 +462,8 @@ int fwnode_property_read_string_array(struct fwnode_handle *fwnode,
 						      propname, val, nval) :
 			of_property_count_strings(to_of_node(fwnode), propname);
 	else if (is_acpi_node(fwnode))
-		return acpi_dev_prop_read(to_acpi_node(fwnode), propname,
-					  DEV_PROP_STRING, val, nval);
+		return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING,
+					   val, nval);
 	else if (is_pset(fwnode))
 		return pset_prop_read_array(to_pset(fwnode), propname,
 					    DEV_PROP_STRING, val, nval);
@@ -470,8 +492,8 @@ int fwnode_property_read_string(struct fwnode_handle *fwnode,
 	if (is_of_node(fwnode))
 		return of_property_read_string(to_of_node(fwnode), propname, val);
 	else if (is_acpi_node(fwnode))
-		return acpi_dev_prop_read(to_acpi_node(fwnode), propname,
-					  DEV_PROP_STRING, val, 1);
+		return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING,
+					   val, 1);
 
 	return pset_prop_read_array(to_pset(fwnode), propname,
 				    DEV_PROP_STRING, val, 1);
@@ -479,6 +501,52 @@ int fwnode_property_read_string(struct fwnode_handle *fwnode,
 EXPORT_SYMBOL_GPL(fwnode_property_read_string);
 
 /**
+ * fwnode_property_match_string - find a string in an array and return index
+ * @fwnode: Firmware node to get the property of
+ * @propname: Name of the property holding the array
+ * @string: String to look for
+ *
+ * Find a given string in a string array and if it is found return the
+ * index back.
+ *
+ * Return: %0 if the property was found (success),
+ *	   %-EINVAL if given arguments are not valid,
+ *	   %-ENODATA if the property does not have a value,
+ *	   %-EPROTO if the property is not an array of strings,
+ *	   %-ENXIO if no suitable firmware interface is present.
+ */
+int fwnode_property_match_string(struct fwnode_handle *fwnode,
+	const char *propname, const char *string)
+{
+	const char **values;
+	int nval, ret, i;
+
+	nval = fwnode_property_read_string_array(fwnode, propname, NULL, 0);
+	if (nval < 0)
+		return nval;
+
+	values = kcalloc(nval, sizeof(*values), GFP_KERNEL);
+	if (!values)
+		return -ENOMEM;
+
+	ret = fwnode_property_read_string_array(fwnode, propname, values, nval);
+	if (ret < 0)
+		goto out;
+
+	ret = -ENODATA;
+	for (i = 0; i < nval; i++) {
+		if (!strcmp(values[i], string)) {
+			ret = i;
+			break;
+		}
+	}
+out:
+	kfree(values);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(fwnode_property_match_string);
+
+/**
  * device_get_next_child_node - Return the next child node handle for a device
  * @dev: Device to find the next child node for.
  * @child: Handle to one of the device's child nodes or a null handle.
@@ -493,11 +561,7 @@ struct fwnode_handle *device_get_next_child_node(struct device *dev,
 		if (node)
 			return &node->fwnode;
 	} else if (IS_ENABLED(CONFIG_ACPI)) {
-		struct acpi_device *node;
-
-		node = acpi_get_next_child(dev, to_acpi_node(child));
-		if (node)
-			return acpi_fwnode_handle(node);
+		return acpi_get_next_subnode(dev, child);
 	}
 	return NULL;
 }
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 50b68bc20720..9ceaef7eb81d 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -2,6 +2,14 @@ menu "Clock Source drivers"
 
 config CLKSRC_OF
 	bool
+	select CLKSRC_PROBE
+
+config CLKSRC_ACPI
+	bool
+	select CLKSRC_PROBE
+
+config CLKSRC_PROBE
+	bool
 
 config CLKSRC_I8253
 	bool
@@ -123,6 +131,7 @@ config CLKSRC_STM32
 config ARM_ARCH_TIMER
 	bool
 	select CLKSRC_OF if OF
+	select CLKSRC_ACPI if ACPI
 
 config ARM_ARCH_TIMER_EVTSTREAM
 	bool "Support for ARM architected timer event stream generation"
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 67bc996ca909..e8aec9dfa597 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_CLKSRC_OF)	+= clksrc-of.o
+obj-$(CONFIG_CLKSRC_PROBE)	+= clksrc-probe.o
 obj-$(CONFIG_ATMEL_PIT)		+= timer-atmel-pit.o
 obj-$(CONFIG_ATMEL_ST)		+= timer-atmel-st.o
 obj-$(CONFIG_ATMEL_TCB_CLKSRC)	+= tcb_clksrc.o
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index d6e3e49399dd..c64d543d64bf 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -864,13 +864,5 @@ static int __init arch_timer_acpi_init(struct acpi_table_header *table)
 	arch_timer_init();
 	return 0;
 }
-
-/* Initialize all the generic timers presented in GTDT */
-void __init acpi_generic_timer_init(void)
-{
-	if (acpi_disabled)
-		return;
-
-	acpi_table_parse(ACPI_SIG_GTDT, arch_timer_acpi_init);
-}
+CLOCKSOURCE_ACPI_DECLARE(arch_timer, ACPI_SIG_GTDT, arch_timer_acpi_init);
 #endif
diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-probe.c
index 0093a8e49e14..7cb6c923a836 100644
--- a/drivers/clocksource/clksrc-of.c
+++ b/drivers/clocksource/clksrc-probe.c
@@ -14,6 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/acpi.h>
 #include <linux/init.h>
 #include <linux/of.h>
 #include <linux/clocksource.h>
@@ -23,7 +24,7 @@ extern struct of_device_id __clksrc_of_table[];
 static const struct of_device_id __clksrc_of_table_sentinel
 	__used __section(__clksrc_of_table_end);
 
-void __init clocksource_of_init(void)
+void __init clocksource_probe(void)
 {
 	struct device_node *np;
 	const struct of_device_id *match;
@@ -38,6 +39,9 @@ void __init clocksource_of_init(void)
 		init_func(np);
 		clocksources++;
 	}
+
+	clocksources += acpi_probe_device_table(clksrc);
+
 	if (!clocksources)
 		pr_crit("%s: no matching clocksources found\n", __func__);
 }
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index cd0391e46c6d..642fd49793b0 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -227,3 +227,20 @@ config ARM_PXA2xx_CPUFREQ
 	  This add the CPUFreq driver support for Intel PXA2xx SOCs.
 
 	  If in doubt, say N.
+
+config ACPI_CPPC_CPUFREQ
+	tristate "CPUFreq driver based on the ACPI CPPC spec"
+	depends on ACPI
+	select ACPI_CPPC_LIB
+	default n
+	help
+	  This adds a CPUFreq driver which uses CPPC methods
+	  as described in the ACPIv5.1 spec. CPPC stands for
+	  Collaborative Processor Performance Controls. It
+	  is based on an abstract continuous scale of CPU
+	  performance values which allows the remote power
+	  processor to flexibly optimize for power and
+	  performance. CPPC relies on power management firmware
+	  support for its operation.
+
+	  If in doubt, say N.
diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86
index c59bdcb83217..adbd1de1cea5 100644
--- a/drivers/cpufreq/Kconfig.x86
+++ b/drivers/cpufreq/Kconfig.x86
@@ -5,6 +5,7 @@
 config X86_INTEL_PSTATE
        bool "Intel P state control"
        depends on X86
+       select ACPI_PROCESSOR if ACPI
        help
           This driver provides a P state for Intel core processors.
 	  The driver implements an internal governor and will become
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 41340384f11f..d11309c487d0 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -1,6 +1,5 @@
 # CPUfreq core
 obj-$(CONFIG_CPU_FREQ)			+= cpufreq.o freq_table.o
-obj-$(CONFIG_PM_OPP)			+= cpufreq_opp.o
 
 # CPUfreq stats
 obj-$(CONFIG_CPU_FREQ_STAT)             += cpufreq_stats.o
@@ -76,6 +75,8 @@ obj-$(CONFIG_ARM_SPEAR_CPUFREQ)		+= spear-cpufreq.o
 obj-$(CONFIG_ARM_TEGRA20_CPUFREQ)	+= tegra20-cpufreq.o
 obj-$(CONFIG_ARM_TEGRA124_CPUFREQ)	+= tegra124-cpufreq.o
 obj-$(CONFIG_ARM_VEXPRESS_SPC_CPUFREQ)	+= vexpress-spc-cpufreq.o
+obj-$(CONFIG_ACPI_CPPC_CPUFREQ) += cppc_cpufreq.o
+
 
 ##################################################################################
 # PowerPC platform drivers
diff --git a/drivers/cpufreq/arm_big_little.h b/drivers/cpufreq/arm_big_little.h
index a211f7db9d32..b88889d9387e 100644
--- a/drivers/cpufreq/arm_big_little.h
+++ b/drivers/cpufreq/arm_big_little.h
@@ -28,7 +28,7 @@ struct cpufreq_arm_bL_ops {
 
 	/*
 	 * This must set opp table for cpu_dev in a similar way as done by
-	 * of_init_opp_table().
+	 * dev_pm_opp_of_add_table().
 	 */
 	int (*init_opp_table)(struct device *cpu_dev);
 
diff --git a/drivers/cpufreq/arm_big_little_dt.c b/drivers/cpufreq/arm_big_little_dt.c
index 36d91dba2965..16ddeefe9443 100644
--- a/drivers/cpufreq/arm_big_little_dt.c
+++ b/drivers/cpufreq/arm_big_little_dt.c
@@ -54,7 +54,7 @@ static int dt_init_opp_table(struct device *cpu_dev)
 		return -ENOENT;
 	}
 
-	ret = of_init_opp_table(cpu_dev);
+	ret = dev_pm_opp_of_add_table(cpu_dev);
 	of_node_put(np);
 
 	return ret;
@@ -82,7 +82,7 @@ static struct cpufreq_arm_bL_ops dt_bL_ops = {
 	.name	= "dt-bl",
 	.get_transition_latency = dt_get_transition_latency,
 	.init_opp_table = dt_init_opp_table,
-	.free_opp_table = of_free_opp_table,
+	.free_opp_table = dev_pm_opp_of_remove_table,
 };
 
 static int generic_bL_probe(struct platform_device *pdev)
diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
new file mode 100644
index 000000000000..93c219fab850
--- /dev/null
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -0,0 +1,176 @@
+/*
+ * CPPC (Collaborative Processor Performance Control) driver for
+ * interfacing with the CPUfreq layer and governors. See
+ * cppc_acpi.c for CPPC specific methods.
+ *
+ * (C) Copyright 2014, 2015 Linaro Ltd.
+ * Author: Ashwin Chaugule <ashwin.chaugule@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#define pr_fmt(fmt)	"CPPC Cpufreq:"	fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/cpu.h>
+#include <linux/cpufreq.h>
+#include <linux/vmalloc.h>
+
+#include <acpi/cppc_acpi.h>
+
+/*
+ * These structs contain information parsed from per CPU
+ * ACPI _CPC structures.
+ * e.g. For each CPU the highest, lowest supported
+ * performance capabilities, desired performance level
+ * requested etc.
+ */
+static struct cpudata **all_cpu_data;
+
+static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
+		unsigned int target_freq,
+		unsigned int relation)
+{
+	struct cpudata *cpu;
+	struct cpufreq_freqs freqs;
+	int ret = 0;
+
+	cpu = all_cpu_data[policy->cpu];
+
+	cpu->perf_ctrls.desired_perf = target_freq;
+	freqs.old = policy->cur;
+	freqs.new = target_freq;
+
+	cpufreq_freq_transition_begin(policy, &freqs);
+	ret = cppc_set_perf(cpu->cpu, &cpu->perf_ctrls);
+	cpufreq_freq_transition_end(policy, &freqs, ret != 0);
+
+	if (ret)
+		pr_debug("Failed to set target on CPU:%d. ret:%d\n",
+				cpu->cpu, ret);
+
+	return ret;
+}
+
+static int cppc_verify_policy(struct cpufreq_policy *policy)
+{
+	cpufreq_verify_within_cpu_limits(policy);
+	return 0;
+}
+
+static void cppc_cpufreq_stop_cpu(struct cpufreq_policy *policy)
+{
+	int cpu_num = policy->cpu;
+	struct cpudata *cpu = all_cpu_data[cpu_num];
+	int ret;
+
+	cpu->perf_ctrls.desired_perf = cpu->perf_caps.lowest_perf;
+
+	ret = cppc_set_perf(cpu_num, &cpu->perf_ctrls);
+	if (ret)
+		pr_debug("Err setting perf value:%d on CPU:%d. ret:%d\n",
+				cpu->perf_caps.lowest_perf, cpu_num, ret);
+}
+
+static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
+{
+	struct cpudata *cpu;
+	unsigned int cpu_num = policy->cpu;
+	int ret = 0;
+
+	cpu = all_cpu_data[policy->cpu];
+
+	cpu->cpu = cpu_num;
+	ret = cppc_get_perf_caps(policy->cpu, &cpu->perf_caps);
+
+	if (ret) {
+		pr_debug("Err reading CPU%d perf capabilities. ret:%d\n",
+				cpu_num, ret);
+		return ret;
+	}
+
+	policy->min = cpu->perf_caps.lowest_perf;
+	policy->max = cpu->perf_caps.highest_perf;
+	policy->cpuinfo.min_freq = policy->min;
+	policy->cpuinfo.max_freq = policy->max;
+
+	if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
+		cpumask_copy(policy->cpus, cpu->shared_cpu_map);
+	else {
+		/* Support only SW_ANY for now. */
+		pr_debug("Unsupported CPU co-ord type\n");
+		return -EFAULT;
+	}
+
+	cpumask_set_cpu(policy->cpu, policy->cpus);
+	cpu->cur_policy = policy;
+
+	/* Set policy->cur to max now. The governors will adjust later. */
+	policy->cur = cpu->perf_ctrls.desired_perf = cpu->perf_caps.highest_perf;
+
+	ret = cppc_set_perf(cpu_num, &cpu->perf_ctrls);
+	if (ret)
+		pr_debug("Err setting perf value:%d on CPU:%d. ret:%d\n",
+				cpu->perf_caps.highest_perf, cpu_num, ret);
+
+	return ret;
+}
+
+static struct cpufreq_driver cppc_cpufreq_driver = {
+	.flags = CPUFREQ_CONST_LOOPS,
+	.verify = cppc_verify_policy,
+	.target = cppc_cpufreq_set_target,
+	.init = cppc_cpufreq_cpu_init,
+	.stop_cpu = cppc_cpufreq_stop_cpu,
+	.name = "cppc_cpufreq",
+};
+
+static int __init cppc_cpufreq_init(void)
+{
+	int i, ret = 0;
+	struct cpudata *cpu;
+
+	if (acpi_disabled)
+		return -ENODEV;
+
+	all_cpu_data = kzalloc(sizeof(void *) * num_possible_cpus(), GFP_KERNEL);
+	if (!all_cpu_data)
+		return -ENOMEM;
+
+	for_each_possible_cpu(i) {
+		all_cpu_data[i] = kzalloc(sizeof(struct cpudata), GFP_KERNEL);
+		if (!all_cpu_data[i])
+			goto out;
+
+		cpu = all_cpu_data[i];
+		if (!zalloc_cpumask_var(&cpu->shared_cpu_map, GFP_KERNEL))
+			goto out;
+	}
+
+	ret = acpi_get_psd_map(all_cpu_data);
+	if (ret) {
+		pr_debug("Error parsing PSD data. Aborting cpufreq registration.\n");
+		goto out;
+	}
+
+	ret = cpufreq_register_driver(&cppc_cpufreq_driver);
+	if (ret)
+		goto out;
+
+	return ret;
+
+out:
+	for_each_possible_cpu(i)
+		if (all_cpu_data[i])
+			kfree(all_cpu_data[i]);
+
+	kfree(all_cpu_data);
+	return -ENODEV;
+}
+
+late_initcall(cppc_cpufreq_init);
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 7c0d70e2a861..90d64081ddb3 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -216,7 +216,7 @@ static int cpufreq_init(struct cpufreq_policy *policy)
 	}
 
 	/* Get OPP-sharing information from "operating-points-v2" bindings */
-	ret = of_get_cpus_sharing_opps(cpu_dev, policy->cpus);
+	ret = dev_pm_opp_of_get_sharing_cpus(cpu_dev, policy->cpus);
 	if (ret) {
 		/*
 		 * operating-points-v2 not supported, fallback to old method of
@@ -238,7 +238,7 @@ static int cpufreq_init(struct cpufreq_policy *policy)
 	 *
 	 * OPPs might be populated at runtime, don't check for error here
 	 */
-	of_cpumask_init_opp_table(policy->cpus);
+	dev_pm_opp_of_cpumask_add_table(policy->cpus);
 
 	/*
 	 * But we need OPP table to function so if it is not there let's
@@ -261,7 +261,7 @@ static int cpufreq_init(struct cpufreq_policy *policy)
 		 * OPP tables are initialized only for policy->cpu, do it for
 		 * others as well.
 		 */
-		ret = set_cpus_sharing_opps(cpu_dev, policy->cpus);
+		ret = dev_pm_opp_set_sharing_cpus(cpu_dev, policy->cpus);
 		if (ret)
 			dev_err(cpu_dev, "%s: failed to mark OPPs as shared: %d\n",
 				__func__, ret);
@@ -368,7 +368,7 @@ out_free_cpufreq_table:
 out_free_priv:
 	kfree(priv);
 out_free_opp:
-	of_cpumask_free_opp_table(policy->cpus);
+	dev_pm_opp_of_cpumask_remove_table(policy->cpus);
 out_node_put:
 	of_node_put(np);
 out_put_reg_clk:
@@ -385,7 +385,7 @@ static int cpufreq_exit(struct cpufreq_policy *policy)
 
 	cpufreq_cooling_unregister(priv->cdev);
 	dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);
-	of_cpumask_free_opp_table(policy->related_cpus);
+	dev_pm_opp_of_cpumask_remove_table(policy->related_cpus);
 	clk_put(policy->clk);
 	if (!IS_ERR(priv->cpu_reg))
 		regulator_put(priv->cpu_reg);
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 25c4c15103a0..7c48e7316d91 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -843,18 +843,11 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
 
 	down_write(&policy->rwsem);
 
-	/* Updating inactive policies is invalid, so avoid doing that. */
-	if (unlikely(policy_is_inactive(policy))) {
-		ret = -EBUSY;
-		goto unlock_policy_rwsem;
-	}
-
 	if (fattr->store)
 		ret = fattr->store(policy, buf, count);
 	else
 		ret = -EIO;
 
-unlock_policy_rwsem:
 	up_write(&policy->rwsem);
 unlock:
 	put_online_cpus();
@@ -880,49 +873,6 @@ static struct kobj_type ktype_cpufreq = {
 	.release	= cpufreq_sysfs_release,
 };
 
-struct kobject *cpufreq_global_kobject;
-EXPORT_SYMBOL(cpufreq_global_kobject);
-
-static int cpufreq_global_kobject_usage;
-
-int cpufreq_get_global_kobject(void)
-{
-	if (!cpufreq_global_kobject_usage++)
-		return kobject_add(cpufreq_global_kobject,
-				&cpu_subsys.dev_root->kobj, "%s", "cpufreq");
-
-	return 0;
-}
-EXPORT_SYMBOL(cpufreq_get_global_kobject);
-
-void cpufreq_put_global_kobject(void)
-{
-	if (!--cpufreq_global_kobject_usage)
-		kobject_del(cpufreq_global_kobject);
-}
-EXPORT_SYMBOL(cpufreq_put_global_kobject);
-
-int cpufreq_sysfs_create_file(const struct attribute *attr)
-{
-	int ret = cpufreq_get_global_kobject();
-
-	if (!ret) {
-		ret = sysfs_create_file(cpufreq_global_kobject, attr);
-		if (ret)
-			cpufreq_put_global_kobject();
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL(cpufreq_sysfs_create_file);
-
-void cpufreq_sysfs_remove_file(const struct attribute *attr)
-{
-	sysfs_remove_file(cpufreq_global_kobject, attr);
-	cpufreq_put_global_kobject();
-}
-EXPORT_SYMBOL(cpufreq_sysfs_remove_file);
-
 static int add_cpu_dev_symlink(struct cpufreq_policy *policy, int cpu)
 {
 	struct device *cpu_dev;
@@ -960,9 +910,6 @@ static int cpufreq_add_dev_symlink(struct cpufreq_policy *policy)
 
 	/* Some related CPUs might not be present (physically hotplugged) */
 	for_each_cpu(j, policy->real_cpus) {
-		if (j == policy->kobj_cpu)
-			continue;
-
 		ret = add_cpu_dev_symlink(policy, j);
 		if (ret)
 			break;
@@ -976,12 +923,8 @@ static void cpufreq_remove_dev_symlink(struct cpufreq_policy *policy)
 	unsigned int j;
 
 	/* Some related CPUs might not be present (physically hotplugged) */
-	for_each_cpu(j, policy->real_cpus) {
-		if (j == policy->kobj_cpu)
-			continue;
-
+	for_each_cpu(j, policy->real_cpus)
 		remove_cpu_dev_symlink(policy, j);
-	}
 }
 
 static int cpufreq_add_dev_interface(struct cpufreq_policy *policy)
@@ -1079,7 +1022,6 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu)
 {
 	struct device *dev = get_cpu_device(cpu);
 	struct cpufreq_policy *policy;
-	int ret;
 
 	if (WARN_ON(!dev))
 		return NULL;
@@ -1097,13 +1039,7 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu)
 	if (!zalloc_cpumask_var(&policy->real_cpus, GFP_KERNEL))
 		goto err_free_rcpumask;
 
-	ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq, &dev->kobj,
-				   "cpufreq");
-	if (ret) {
-		pr_err("%s: failed to init policy->kobj: %d\n", __func__, ret);
-		goto err_free_real_cpus;
-	}
-
+	kobject_init(&policy->kobj, &ktype_cpufreq);
 	INIT_LIST_HEAD(&policy->policy_list);
 	init_rwsem(&policy->rwsem);
 	spin_lock_init(&policy->transition_lock);
@@ -1112,14 +1048,8 @@ static struct cpufreq_policy *cpufreq_policy_alloc(unsigned int cpu)
 	INIT_WORK(&policy->update, handle_update);
 
 	policy->cpu = cpu;
-
-	/* Set this once on allocation */
-	policy->kobj_cpu = cpu;
-
 	return policy;
 
-err_free_real_cpus:
-	free_cpumask_var(policy->real_cpus);
 err_free_rcpumask:
 	free_cpumask_var(policy->related_cpus);
 err_free_cpumask:
@@ -1221,9 +1151,19 @@ static int cpufreq_online(unsigned int cpu)
 
 	if (new_policy) {
 		/* related_cpus should at least include policy->cpus. */
-		cpumask_or(policy->related_cpus, policy->related_cpus, policy->cpus);
+		cpumask_copy(policy->related_cpus, policy->cpus);
 		/* Remember CPUs present at the policy creation time. */
 		cpumask_and(policy->real_cpus, policy->cpus, cpu_present_mask);
+
+		/* Name and add the kobject */
+		ret = kobject_add(&policy->kobj, cpufreq_global_kobject,
+				  "policy%u",
+				  cpumask_first(policy->related_cpus));
+		if (ret) {
+			pr_err("%s: failed to add policy->kobj: %d\n", __func__,
+			       ret);
+			goto out_exit_policy;
+		}
 	}
 
 	/*
@@ -1467,22 +1407,7 @@ static void cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
 		return;
 	}
 
-	if (cpu != policy->kobj_cpu) {
-		remove_cpu_dev_symlink(policy, cpu);
-	} else {
-		/*
-		 * The CPU owning the policy object is going away.  Move it to
-		 * another suitable CPU.
-		 */
-		unsigned int new_cpu = cpumask_first(policy->real_cpus);
-		struct device *new_dev = get_cpu_device(new_cpu);
-
-		dev_dbg(dev, "%s: Moving policy object to CPU%u\n", __func__, new_cpu);
-
-		sysfs_remove_link(&new_dev->kobj, "cpufreq");
-		policy->kobj_cpu = new_cpu;
-		WARN_ON(kobject_move(&policy->kobj, &new_dev->kobj));
-	}
+	remove_cpu_dev_symlink(policy, cpu);
 }
 
 static void handle_update(struct work_struct *work)
@@ -2425,7 +2350,7 @@ static int create_boost_sysfs_file(void)
 	if (!cpufreq_driver->set_boost)
 		cpufreq_driver->set_boost = cpufreq_boost_set_sw;
 
-	ret = cpufreq_sysfs_create_file(&boost.attr);
+	ret = sysfs_create_file(cpufreq_global_kobject, &boost.attr);
 	if (ret)
 		pr_err("%s: cannot register global BOOST sysfs file\n",
 		       __func__);
@@ -2436,7 +2361,7 @@ static int create_boost_sysfs_file(void)
 static void remove_boost_sysfs_file(void)
 {
 	if (cpufreq_boost_supported())
-		cpufreq_sysfs_remove_file(&boost.attr);
+		sysfs_remove_file(cpufreq_global_kobject, &boost.attr);
 }
 
 int cpufreq_enable_boost_support(void)
@@ -2584,12 +2509,15 @@ static struct syscore_ops cpufreq_syscore_ops = {
 	.shutdown = cpufreq_suspend,
 };
 
+struct kobject *cpufreq_global_kobject;
+EXPORT_SYMBOL(cpufreq_global_kobject);
+
 static int __init cpufreq_core_init(void)
 {
 	if (cpufreq_disabled())
 		return -ENODEV;
 
-	cpufreq_global_kobject = kobject_create();
+	cpufreq_global_kobject = kobject_create_and_add("cpufreq", &cpu_subsys.dev_root->kobj);
 	BUG_ON(!cpufreq_global_kobject);
 
 	register_syscore_ops(&cpufreq_syscore_ops);
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 84a1506950a7..1fa1deb6e91f 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -23,6 +23,19 @@
 
 static DEFINE_PER_CPU(struct cs_cpu_dbs_info_s, cs_cpu_dbs_info);
 
+static int cs_cpufreq_governor_dbs(struct cpufreq_policy *policy,
+				   unsigned int event);
+
+#ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
+static
+#endif
+struct cpufreq_governor cpufreq_gov_conservative = {
+	.name			= "conservative",
+	.governor		= cs_cpufreq_governor_dbs,
+	.max_transition_latency	= TRANSITION_LATENCY_LIMIT,
+	.owner			= THIS_MODULE,
+};
+
 static inline unsigned int get_freq_target(struct cs_dbs_tuners *cs_tuners,
 					   struct cpufreq_policy *policy)
 {
@@ -119,12 +132,14 @@ static int dbs_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
 	struct cpufreq_freqs *freq = data;
 	struct cs_cpu_dbs_info_s *dbs_info =
 					&per_cpu(cs_cpu_dbs_info, freq->cpu);
-	struct cpufreq_policy *policy;
+	struct cpufreq_policy *policy = cpufreq_cpu_get_raw(freq->cpu);
 
-	if (!dbs_info->enable)
+	if (!policy)
 		return 0;
 
-	policy = dbs_info->cdbs.shared->policy;
+	/* policy isn't governed by conservative governor */
+	if (policy->governor != &cpufreq_gov_conservative)
+		return 0;
 
 	/*
 	 * we only care if our internally tracked freq moves outside the 'valid'
@@ -367,16 +382,6 @@ static int cs_cpufreq_governor_dbs(struct cpufreq_policy *policy,
 	return cpufreq_governor_dbs(policy, &cs_dbs_cdata, event);
 }
 
-#ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
-static
-#endif
-struct cpufreq_governor cpufreq_gov_conservative = {
-	.name			= "conservative",
-	.governor		= cs_cpufreq_governor_dbs,
-	.max_transition_latency	= TRANSITION_LATENCY_LIMIT,
-	.owner			= THIS_MODULE,
-};
-
 static int __init cpufreq_gov_dbs_init(void)
 {
 	return cpufreq_register_governor(&cpufreq_gov_conservative);
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 939197ffa4ac..11258c4c1b17 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -348,29 +348,21 @@ static int cpufreq_governor_init(struct cpufreq_policy *policy,
 	set_sampling_rate(dbs_data, max(dbs_data->min_sampling_rate,
 					latency * LATENCY_MULTIPLIER));
 
-	if (!have_governor_per_policy()) {
-		if (WARN_ON(cpufreq_get_global_kobject())) {
-			ret = -EINVAL;
-			goto cdata_exit;
-		}
+	if (!have_governor_per_policy())
 		cdata->gdbs_data = dbs_data;
-	}
 
 	ret = sysfs_create_group(get_governor_parent_kobj(policy),
 				 get_sysfs_attr(dbs_data));
 	if (ret)
-		goto put_kobj;
+		goto reset_gdbs_data;
 
 	policy->governor_data = dbs_data;
 
 	return 0;
 
-put_kobj:
-	if (!have_governor_per_policy()) {
+reset_gdbs_data:
+	if (!have_governor_per_policy())
 		cdata->gdbs_data = NULL;
-		cpufreq_put_global_kobject();
-	}
-cdata_exit:
 	cdata->exit(dbs_data, !policy->governor->initialized);
 free_common_dbs_info:
 	free_common_dbs_info(policy, cdata);
@@ -394,10 +386,8 @@ static int cpufreq_governor_exit(struct cpufreq_policy *policy,
 		sysfs_remove_group(get_governor_parent_kobj(policy),
 				   get_sysfs_attr(dbs_data));
 
-		if (!have_governor_per_policy()) {
+		if (!have_governor_per_policy())
 			cdata->gdbs_data = NULL;
-			cpufreq_put_global_kobject();
-		}
 
 		cdata->exit(dbs_data, policy->governor->initialized == 1);
 		kfree(dbs_data);
@@ -463,7 +453,6 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy,
 			cdata->get_cpu_dbs_info_s(cpu);
 
 		cs_dbs_info->down_skip = 0;
-		cs_dbs_info->enable = 1;
 		cs_dbs_info->requested_freq = policy->cur;
 	} else {
 		struct od_ops *od_ops = cdata->gov_ops;
@@ -482,9 +471,7 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy,
 static int cpufreq_governor_stop(struct cpufreq_policy *policy,
 				 struct dbs_data *dbs_data)
 {
-	struct common_dbs_data *cdata = dbs_data->cdata;
-	unsigned int cpu = policy->cpu;
-	struct cpu_dbs_info *cdbs = cdata->get_cpu_cdbs(cpu);
+	struct cpu_dbs_info *cdbs = dbs_data->cdata->get_cpu_cdbs(policy->cpu);
 	struct cpu_common_dbs_info *shared = cdbs->shared;
 
 	/* State should be equivalent to START */
@@ -493,13 +480,6 @@ static int cpufreq_governor_stop(struct cpufreq_policy *policy,
 
 	gov_cancel_work(dbs_data, policy);
 
-	if (cdata->governor == GOV_CONSERVATIVE) {
-		struct cs_cpu_dbs_info_s *cs_dbs_info =
-			cdata->get_cpu_dbs_info_s(cpu);
-
-		cs_dbs_info->enable = 0;
-	}
-
 	shared->policy = NULL;
 	mutex_destroy(&shared->timer_mutex);
 	return 0;
diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
index 50f171796632..5621bb03e874 100644
--- a/drivers/cpufreq/cpufreq_governor.h
+++ b/drivers/cpufreq/cpufreq_governor.h
@@ -170,7 +170,6 @@ struct cs_cpu_dbs_info_s {
 	struct cpu_dbs_info cdbs;
 	unsigned int down_skip;
 	unsigned int requested_freq;
-	unsigned int enable:1;
 };
 
 /* Per policy Governors sysfs tunables */
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 1fa9088c84a8..03ac6ce54042 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -267,27 +267,19 @@ static void update_sampling_rate(struct dbs_data *dbs_data,
 		dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
 		cpufreq_cpu_put(policy);
 
-		mutex_lock(&dbs_info->cdbs.shared->timer_mutex);
-
-		if (!delayed_work_pending(&dbs_info->cdbs.dwork)) {
-			mutex_unlock(&dbs_info->cdbs.shared->timer_mutex);
+		if (!delayed_work_pending(&dbs_info->cdbs.dwork))
 			continue;
-		}
 
 		next_sampling = jiffies + usecs_to_jiffies(new_rate);
 		appointed_at = dbs_info->cdbs.dwork.timer.expires;
 
 		if (time_before(next_sampling, appointed_at)) {
-
-			mutex_unlock(&dbs_info->cdbs.shared->timer_mutex);
 			cancel_delayed_work_sync(&dbs_info->cdbs.dwork);
-			mutex_lock(&dbs_info->cdbs.shared->timer_mutex);
 
 			gov_queue_work(dbs_data, policy,
 				       usecs_to_jiffies(new_rate), true);
 
 		}
-		mutex_unlock(&dbs_info->cdbs.shared->timer_mutex);
 	}
 }
 
diff --git a/drivers/cpufreq/cpufreq_opp.c b/drivers/cpufreq/cpufreq_opp.c
deleted file mode 100644
index 0f5e6d5f6da0..000000000000
--- a/drivers/cpufreq/cpufreq_opp.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * Generic OPP helper interface for CPUFreq drivers
- *
- * Copyright (C) 2009-2014 Texas Instruments Incorporated.
- *	Nishanth Menon
- *	Romit Dasgupta
- *	Kevin Hilman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/export.h>
-#include <linux/kernel.h>
-#include <linux/pm_opp.h>
-#include <linux/rcupdate.h>
-#include <linux/slab.h>
-
-/**
- * dev_pm_opp_init_cpufreq_table() - create a cpufreq table for a device
- * @dev:	device for which we do this operation
- * @table:	Cpufreq table returned back to caller
- *
- * Generate a cpufreq table for a provided device- this assumes that the
- * opp list is already initialized and ready for usage.
- *
- * This function allocates required memory for the cpufreq table. It is
- * expected that the caller does the required maintenance such as freeing
- * the table as required.
- *
- * Returns -EINVAL for bad pointers, -ENODEV if the device is not found, -ENOMEM
- * if no memory available for the operation (table is not populated), returns 0
- * if successful and table is populated.
- *
- * WARNING: It is  important for the callers to ensure refreshing their copy of
- * the table if any of the mentioned functions have been invoked in the interim.
- *
- * Locking: The internal device_opp and opp structures are RCU protected.
- * Since we just use the regular accessor functions to access the internal data
- * structures, we use RCU read lock inside this function. As a result, users of
- * this function DONOT need to use explicit locks for invoking.
- */
-int dev_pm_opp_init_cpufreq_table(struct device *dev,
-				  struct cpufreq_frequency_table **table)
-{
-	struct dev_pm_opp *opp;
-	struct cpufreq_frequency_table *freq_table = NULL;
-	int i, max_opps, ret = 0;
-	unsigned long rate;
-
-	rcu_read_lock();
-
-	max_opps = dev_pm_opp_get_opp_count(dev);
-	if (max_opps <= 0) {
-		ret = max_opps ? max_opps : -ENODATA;
-		goto out;
-	}
-
-	freq_table = kcalloc((max_opps + 1), sizeof(*freq_table), GFP_ATOMIC);
-	if (!freq_table) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	for (i = 0, rate = 0; i < max_opps; i++, rate++) {
-		/* find next rate */
-		opp = dev_pm_opp_find_freq_ceil(dev, &rate);
-		if (IS_ERR(opp)) {
-			ret = PTR_ERR(opp);
-			goto out;
-		}
-		freq_table[i].driver_data = i;
-		freq_table[i].frequency = rate / 1000;
-
-		/* Is Boost/turbo opp ? */
-		if (dev_pm_opp_is_turbo(opp))
-			freq_table[i].flags = CPUFREQ_BOOST_FREQ;
-	}
-
-	freq_table[i].driver_data = i;
-	freq_table[i].frequency = CPUFREQ_TABLE_END;
-
-	*table = &freq_table[0];
-
-out:
-	rcu_read_unlock();
-	if (ret)
-		kfree(freq_table);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_init_cpufreq_table);
-
-/**
- * dev_pm_opp_free_cpufreq_table() - free the cpufreq table
- * @dev:	device for which we do this operation
- * @table:	table to free
- *
- * Free up the table allocated by dev_pm_opp_init_cpufreq_table
- */
-void dev_pm_opp_free_cpufreq_table(struct device *dev,
-				   struct cpufreq_frequency_table **table)
-{
-	if (!table)
-		return;
-
-	kfree(*table);
-	*table = NULL;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_free_cpufreq_table);
diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c
index 21a90ed7f3d8..c0f3373706f4 100644
--- a/drivers/cpufreq/exynos5440-cpufreq.c
+++ b/drivers/cpufreq/exynos5440-cpufreq.c
@@ -360,7 +360,7 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
 		goto err_put_node;
 	}
 
-	ret = of_init_opp_table(dvfs_info->dev);
+	ret = dev_pm_opp_of_add_table(dvfs_info->dev);
 	if (ret) {
 		dev_err(dvfs_info->dev, "failed to init OPP table: %d\n", ret);
 		goto err_put_node;
@@ -424,7 +424,7 @@ static int exynos_cpufreq_probe(struct platform_device *pdev)
 err_free_table:
 	dev_pm_opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
 err_free_opp:
-	of_free_opp_table(dvfs_info->dev);
+	dev_pm_opp_of_remove_table(dvfs_info->dev);
 err_put_node:
 	of_node_put(np);
 	dev_err(&pdev->dev, "%s: failed initialization\n", __func__);
@@ -435,7 +435,7 @@ static int exynos_cpufreq_remove(struct platform_device *pdev)
 {
 	cpufreq_unregister_driver(&exynos_driver);
 	dev_pm_opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table);
-	of_free_opp_table(dvfs_info->dev);
+	dev_pm_opp_of_remove_table(dvfs_info->dev);
 	return 0;
 }
 
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index 380a90d3c57e..ef1fa8145419 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -30,6 +30,10 @@ static struct clk *pll1_sw_clk;
 static struct clk *step_clk;
 static struct clk *pll2_pfd2_396m_clk;
 
+/* clk used by i.MX6UL */
+static struct clk *pll2_bus_clk;
+static struct clk *secondary_sel_clk;
+
 static struct device *cpu_dev;
 static bool free_opp;
 static struct cpufreq_frequency_table *freq_table;
@@ -91,16 +95,36 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
 	 * The setpoints are selected per PLL/PDF frequencies, so we need to
 	 * reprogram PLL for frequency scaling.  The procedure of reprogramming
 	 * PLL1 is as below.
-	 *
+	 * For i.MX6UL, it has a secondary clk mux, the cpu frequency change
+	 * flow is slightly different from other i.MX6 OSC.
+	 * The cpu frequeny change flow for i.MX6(except i.MX6UL) is as below:
 	 *  - Enable pll2_pfd2_396m_clk and reparent pll1_sw_clk to it
 	 *  - Reprogram pll1_sys_clk and reparent pll1_sw_clk back to it
 	 *  - Disable pll2_pfd2_396m_clk
 	 */
-	clk_set_parent(step_clk, pll2_pfd2_396m_clk);
-	clk_set_parent(pll1_sw_clk, step_clk);
-	if (freq_hz > clk_get_rate(pll2_pfd2_396m_clk)) {
-		clk_set_rate(pll1_sys_clk, new_freq * 1000);
+	if (of_machine_is_compatible("fsl,imx6ul")) {
+		/*
+		 * When changing pll1_sw_clk's parent to pll1_sys_clk,
+		 * CPU may run at higher than 528MHz, this will lead to
+		 * the system unstable if the voltage is lower than the
+		 * voltage of 528MHz, so lower the CPU frequency to one
+		 * half before changing CPU frequency.
+		 */
+		clk_set_rate(arm_clk, (old_freq >> 1) * 1000);
 		clk_set_parent(pll1_sw_clk, pll1_sys_clk);
+		if (freq_hz > clk_get_rate(pll2_pfd2_396m_clk))
+			clk_set_parent(secondary_sel_clk, pll2_bus_clk);
+		else
+			clk_set_parent(secondary_sel_clk, pll2_pfd2_396m_clk);
+		clk_set_parent(step_clk, secondary_sel_clk);
+		clk_set_parent(pll1_sw_clk, step_clk);
+	} else {
+		clk_set_parent(step_clk, pll2_pfd2_396m_clk);
+		clk_set_parent(pll1_sw_clk, step_clk);
+		if (freq_hz > clk_get_rate(pll2_pfd2_396m_clk)) {
+			clk_set_rate(pll1_sys_clk, new_freq * 1000);
+			clk_set_parent(pll1_sw_clk, pll1_sys_clk);
+		}
 	}
 
 	/* Ensure the arm clock divider is what we expect */
@@ -186,6 +210,16 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
 		goto put_clk;
 	}
 
+	if (of_machine_is_compatible("fsl,imx6ul")) {
+		pll2_bus_clk = clk_get(cpu_dev, "pll2_bus");
+		secondary_sel_clk = clk_get(cpu_dev, "secondary_sel");
+		if (IS_ERR(pll2_bus_clk) || IS_ERR(secondary_sel_clk)) {
+			dev_err(cpu_dev, "failed to get clocks specific to imx6ul\n");
+			ret = -ENOENT;
+			goto put_clk;
+		}
+	}
+
 	arm_reg = regulator_get(cpu_dev, "arm");
 	pu_reg = regulator_get_optional(cpu_dev, "pu");
 	soc_reg = regulator_get(cpu_dev, "soc");
@@ -202,7 +236,7 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
 	 */
 	num = dev_pm_opp_get_opp_count(cpu_dev);
 	if (num < 0) {
-		ret = of_init_opp_table(cpu_dev);
+		ret = dev_pm_opp_of_add_table(cpu_dev);
 		if (ret < 0) {
 			dev_err(cpu_dev, "failed to init OPP table: %d\n", ret);
 			goto put_reg;
@@ -312,7 +346,7 @@ free_freq_table:
 	dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
 out_free_opp:
 	if (free_opp)
-		of_free_opp_table(cpu_dev);
+		dev_pm_opp_of_remove_table(cpu_dev);
 put_reg:
 	if (!IS_ERR(arm_reg))
 		regulator_put(arm_reg);
@@ -331,6 +365,10 @@ put_clk:
 		clk_put(step_clk);
 	if (!IS_ERR(pll2_pfd2_396m_clk))
 		clk_put(pll2_pfd2_396m_clk);
+	if (!IS_ERR(pll2_bus_clk))
+		clk_put(pll2_bus_clk);
+	if (!IS_ERR(secondary_sel_clk))
+		clk_put(secondary_sel_clk);
 	of_node_put(np);
 	return ret;
 }
@@ -340,7 +378,7 @@ static int imx6q_cpufreq_remove(struct platform_device *pdev)
 	cpufreq_unregister_driver(&imx6q_cpufreq_driver);
 	dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
 	if (free_opp)
-		of_free_opp_table(cpu_dev);
+		dev_pm_opp_of_remove_table(cpu_dev);
 	regulator_put(arm_reg);
 	if (!IS_ERR(pu_reg))
 		regulator_put(pu_reg);
@@ -350,6 +388,8 @@ static int imx6q_cpufreq_remove(struct platform_device *pdev)
 	clk_put(pll1_sw_clk);
 	clk_put(step_clk);
 	clk_put(pll2_pfd2_396m_clk);
+	clk_put(pll2_bus_clk);
+	clk_put(secondary_sel_clk);
 
 	return 0;
 }
diff --git a/drivers/cpufreq/integrator-cpufreq.c b/drivers/cpufreq/integrator-cpufreq.c
index 2faa4216bf2a..79e3ff2771a6 100644
--- a/drivers/cpufreq/integrator-cpufreq.c
+++ b/drivers/cpufreq/integrator-cpufreq.c
@@ -221,6 +221,8 @@ static const struct of_device_id integrator_cpufreq_match[] = {
 	{ },
 };
 
+MODULE_DEVICE_TABLE(of, integrator_cpufreq_match);
+
 static struct platform_driver integrator_cpufreq_driver = {
 	.driver = {
 		.name = "integrator-cpufreq",
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index aa33b92b3e3e..93a3c635ea27 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -34,6 +34,10 @@
 #include <asm/cpu_device_id.h>
 #include <asm/cpufeature.h>
 
+#if IS_ENABLED(CONFIG_ACPI)
+#include <acpi/processor.h>
+#endif
+
 #define BYT_RATIOS		0x66a
 #define BYT_VIDS		0x66b
 #define BYT_TURBO_RATIOS	0x66c
@@ -43,7 +47,6 @@
 #define int_tofp(X) ((int64_t)(X) << FRAC_BITS)
 #define fp_toint(X) ((X) >> FRAC_BITS)
 
-
 static inline int32_t mul_fp(int32_t x, int32_t y)
 {
 	return ((int64_t)x * (int64_t)y) >> FRAC_BITS;
@@ -78,6 +81,7 @@ struct pstate_data {
 	int	current_pstate;
 	int	min_pstate;
 	int	max_pstate;
+	int	max_pstate_physical;
 	int	scaling;
 	int	turbo_pstate;
 };
@@ -113,6 +117,9 @@ struct cpudata {
 	u64	prev_mperf;
 	u64	prev_tsc;
 	struct sample sample;
+#if IS_ENABLED(CONFIG_ACPI)
+	struct acpi_processor_performance acpi_perf_data;
+#endif
 };
 
 static struct cpudata **all_cpu_data;
@@ -127,6 +134,7 @@ struct pstate_adjust_policy {
 
 struct pstate_funcs {
 	int (*get_max)(void);
+	int (*get_max_physical)(void);
 	int (*get_min)(void);
 	int (*get_turbo)(void);
 	int (*get_scaling)(void);
@@ -142,6 +150,7 @@ struct cpu_defaults {
 static struct pstate_adjust_policy pid_params;
 static struct pstate_funcs pstate_funcs;
 static int hwp_active;
+static int no_acpi_perf;
 
 struct perf_limits {
 	int no_turbo;
@@ -154,9 +163,24 @@ struct perf_limits {
 	int max_sysfs_pct;
 	int min_policy_pct;
 	int min_sysfs_pct;
+	int max_perf_ctl;
+	int min_perf_ctl;
+};
+
+static struct perf_limits performance_limits = {
+	.no_turbo = 0,
+	.turbo_disabled = 0,
+	.max_perf_pct = 100,
+	.max_perf = int_tofp(1),
+	.min_perf_pct = 100,
+	.min_perf = int_tofp(1),
+	.max_policy_pct = 100,
+	.max_sysfs_pct = 100,
+	.min_policy_pct = 0,
+	.min_sysfs_pct = 0,
 };
 
-static struct perf_limits limits = {
+static struct perf_limits powersave_limits = {
 	.no_turbo = 0,
 	.turbo_disabled = 0,
 	.max_perf_pct = 100,
@@ -167,8 +191,163 @@ static struct perf_limits limits = {
 	.max_sysfs_pct = 100,
 	.min_policy_pct = 0,
 	.min_sysfs_pct = 0,
+	.max_perf_ctl = 0,
+	.min_perf_ctl = 0,
 };
 
+#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
+static struct perf_limits *limits = &performance_limits;
+#else
+static struct perf_limits *limits = &powersave_limits;
+#endif
+
+#if IS_ENABLED(CONFIG_ACPI)
+/*
+ * The max target pstate ratio is a 8 bit value in both PLATFORM_INFO MSR and
+ * in TURBO_RATIO_LIMIT MSR, which pstate driver stores in max_pstate and
+ * max_turbo_pstate fields. The PERF_CTL MSR contains 16 bit value for P state
+ * ratio, out of it only high 8 bits are used. For example 0x1700 is setting
+ * target ratio 0x17. The _PSS control value stores in a format which can be
+ * directly written to PERF_CTL MSR. But in intel_pstate driver this shift
+ * occurs during write to PERF_CTL (E.g. for cores core_set_pstate()).
+ * This function converts the _PSS control value to intel pstate driver format
+ * for comparison and assignment.
+ */
+static int convert_to_native_pstate_format(struct cpudata *cpu, int index)
+{
+	return cpu->acpi_perf_data.states[index].control >> 8;
+}
+
+static int intel_pstate_init_perf_limits(struct cpufreq_policy *policy)
+{
+	struct cpudata *cpu;
+	int ret;
+	bool turbo_absent = false;
+	int max_pstate_index;
+	int min_pss_ctl, max_pss_ctl, turbo_pss_ctl;
+	int i;
+
+	cpu = all_cpu_data[policy->cpu];
+
+	pr_debug("intel_pstate: default limits 0x%x 0x%x 0x%x\n",
+		 cpu->pstate.min_pstate, cpu->pstate.max_pstate,
+		 cpu->pstate.turbo_pstate);
+
+	if (!cpu->acpi_perf_data.shared_cpu_map &&
+	    zalloc_cpumask_var_node(&cpu->acpi_perf_data.shared_cpu_map,
+				    GFP_KERNEL, cpu_to_node(policy->cpu))) {
+		return -ENOMEM;
+	}
+
+	ret = acpi_processor_register_performance(&cpu->acpi_perf_data,
+						  policy->cpu);
+	if (ret)
+		return ret;
+
+	/*
+	 * Check if the control value in _PSS is for PERF_CTL MSR, which should
+	 * guarantee that the states returned by it map to the states in our
+	 * list directly.
+	 */
+	if (cpu->acpi_perf_data.control_register.space_id !=
+						ACPI_ADR_SPACE_FIXED_HARDWARE)
+		return -EIO;
+
+	pr_debug("intel_pstate: CPU%u - ACPI _PSS perf data\n", policy->cpu);
+	for (i = 0; i < cpu->acpi_perf_data.state_count; i++)
+		pr_debug("     %cP%d: %u MHz, %u mW, 0x%x\n",
+			 (i == cpu->acpi_perf_data.state ? '*' : ' '), i,
+			 (u32) cpu->acpi_perf_data.states[i].core_frequency,
+			 (u32) cpu->acpi_perf_data.states[i].power,
+			 (u32) cpu->acpi_perf_data.states[i].control);
+
+	/*
+	 * If there is only one entry _PSS, simply ignore _PSS and continue as
+	 * usual without taking _PSS into account
+	 */
+	if (cpu->acpi_perf_data.state_count < 2)
+		return 0;
+
+	turbo_pss_ctl = convert_to_native_pstate_format(cpu, 0);
+	min_pss_ctl = convert_to_native_pstate_format(cpu,
+					cpu->acpi_perf_data.state_count - 1);
+	/* Check if there is a turbo freq in _PSS */
+	if (turbo_pss_ctl <= cpu->pstate.max_pstate &&
+	    turbo_pss_ctl > cpu->pstate.min_pstate) {
+		pr_debug("intel_pstate: no turbo range exists in _PSS\n");
+		limits->no_turbo = limits->turbo_disabled = 1;
+		cpu->pstate.turbo_pstate = cpu->pstate.max_pstate;
+		turbo_absent = true;
+	}
+
+	/* Check if the max non turbo p state < Intel P state max */
+	max_pstate_index = turbo_absent ? 0 : 1;
+	max_pss_ctl = convert_to_native_pstate_format(cpu, max_pstate_index);
+	if (max_pss_ctl < cpu->pstate.max_pstate &&
+	    max_pss_ctl > cpu->pstate.min_pstate)
+		cpu->pstate.max_pstate = max_pss_ctl;
+
+	/* check If min perf > Intel P State min */
+	if (min_pss_ctl > cpu->pstate.min_pstate &&
+	    min_pss_ctl < cpu->pstate.max_pstate) {
+		cpu->pstate.min_pstate = min_pss_ctl;
+		policy->cpuinfo.min_freq = min_pss_ctl * cpu->pstate.scaling;
+	}
+
+	if (turbo_absent)
+		policy->cpuinfo.max_freq = cpu->pstate.max_pstate *
+						cpu->pstate.scaling;
+	else {
+		policy->cpuinfo.max_freq = cpu->pstate.turbo_pstate *
+						cpu->pstate.scaling;
+		/*
+		 * The _PSS table doesn't contain whole turbo frequency range.
+		 * This just contains +1 MHZ above the max non turbo frequency,
+		 * with control value corresponding to max turbo ratio. But
+		 * when cpufreq set policy is called, it will call with this
+		 * max frequency, which will cause a reduced performance as
+		 * this driver uses real max turbo frequency as the max
+		 * frequeny. So correct this frequency in _PSS table to
+		 * correct max turbo frequency based on the turbo ratio.
+		 * Also need to convert to MHz as _PSS freq is in MHz.
+		 */
+		cpu->acpi_perf_data.states[0].core_frequency =
+						turbo_pss_ctl * 100;
+	}
+
+	pr_debug("intel_pstate: Updated limits using _PSS 0x%x 0x%x 0x%x\n",
+		 cpu->pstate.min_pstate, cpu->pstate.max_pstate,
+		 cpu->pstate.turbo_pstate);
+	pr_debug("intel_pstate: policy max_freq=%d Khz min_freq = %d KHz\n",
+		 policy->cpuinfo.max_freq, policy->cpuinfo.min_freq);
+
+	return 0;
+}
+
+static int intel_pstate_exit_perf_limits(struct cpufreq_policy *policy)
+{
+	struct cpudata *cpu;
+
+	if (!no_acpi_perf)
+		return 0;
+
+	cpu = all_cpu_data[policy->cpu];
+	acpi_processor_unregister_performance(policy->cpu);
+	return 0;
+}
+
+#else
+static int intel_pstate_init_perf_limits(struct cpufreq_policy *policy)
+{
+	return 0;
+}
+
+static int intel_pstate_exit_perf_limits(struct cpufreq_policy *policy)
+{
+	return 0;
+}
+#endif
+
 static inline void pid_reset(struct _pid *pid, int setpoint, int busy,
 			     int deadband, int integral) {
 	pid->setpoint = setpoint;
@@ -255,7 +434,7 @@ static inline void update_turbo_state(void)
 
 	cpu = all_cpu_data[0];
 	rdmsrl(MSR_IA32_MISC_ENABLE, misc_en);
-	limits.turbo_disabled =
+	limits->turbo_disabled =
 		(misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE ||
 		 cpu->pstate.max_pstate == cpu->pstate.turbo_pstate);
 }
@@ -274,14 +453,14 @@ static void intel_pstate_hwp_set(void)
 
 	for_each_online_cpu(cpu) {
 		rdmsrl_on_cpu(cpu, MSR_HWP_REQUEST, &value);
-		adj_range = limits.min_perf_pct * range / 100;
+		adj_range = limits->min_perf_pct * range / 100;
 		min = hw_min + adj_range;
 		value &= ~HWP_MIN_PERF(~0L);
 		value |= HWP_MIN_PERF(min);
 
-		adj_range = limits.max_perf_pct * range / 100;
+		adj_range = limits->max_perf_pct * range / 100;
 		max = hw_min + adj_range;
-		if (limits.no_turbo) {
+		if (limits->no_turbo) {
 			hw_max = HWP_GUARANTEED_PERF(cap);
 			if (hw_max < max)
 				max = hw_max;
@@ -350,7 +529,7 @@ static void __init intel_pstate_debug_expose_params(void)
 	static ssize_t show_##file_name					\
 	(struct kobject *kobj, struct attribute *attr, char *buf)	\
 	{								\
-		return sprintf(buf, "%u\n", limits.object);		\
+		return sprintf(buf, "%u\n", limits->object);		\
 	}
 
 static ssize_t show_turbo_pct(struct kobject *kobj,
@@ -386,10 +565,10 @@ static ssize_t show_no_turbo(struct kobject *kobj,
 	ssize_t ret;
 
 	update_turbo_state();
-	if (limits.turbo_disabled)
-		ret = sprintf(buf, "%u\n", limits.turbo_disabled);
+	if (limits->turbo_disabled)
+		ret = sprintf(buf, "%u\n", limits->turbo_disabled);
 	else
-		ret = sprintf(buf, "%u\n", limits.no_turbo);
+		ret = sprintf(buf, "%u\n", limits->no_turbo);
 
 	return ret;
 }
@@ -405,12 +584,12 @@ static ssize_t store_no_turbo(struct kobject *a, struct attribute *b,
 		return -EINVAL;
 
 	update_turbo_state();
-	if (limits.turbo_disabled) {
+	if (limits->turbo_disabled) {
 		pr_warn("intel_pstate: Turbo disabled by BIOS or unavailable on processor\n");
 		return -EPERM;
 	}
 
-	limits.no_turbo = clamp_t(int, input, 0, 1);
+	limits->no_turbo = clamp_t(int, input, 0, 1);
 
 	if (hwp_active)
 		intel_pstate_hwp_set();
@@ -428,11 +607,15 @@ static ssize_t store_max_perf_pct(struct kobject *a, struct attribute *b,
 	if (ret != 1)
 		return -EINVAL;
 
-	limits.max_sysfs_pct = clamp_t(int, input, 0 , 100);
-	limits.max_perf_pct = min(limits.max_policy_pct, limits.max_sysfs_pct);
-	limits.max_perf_pct = max(limits.min_policy_pct, limits.max_perf_pct);
-	limits.max_perf_pct = max(limits.min_perf_pct, limits.max_perf_pct);
-	limits.max_perf = div_fp(int_tofp(limits.max_perf_pct), int_tofp(100));
+	limits->max_sysfs_pct = clamp_t(int, input, 0 , 100);
+	limits->max_perf_pct = min(limits->max_policy_pct,
+				   limits->max_sysfs_pct);
+	limits->max_perf_pct = max(limits->min_policy_pct,
+				   limits->max_perf_pct);
+	limits->max_perf_pct = max(limits->min_perf_pct,
+				   limits->max_perf_pct);
+	limits->max_perf = div_fp(int_tofp(limits->max_perf_pct),
+				  int_tofp(100));
 
 	if (hwp_active)
 		intel_pstate_hwp_set();
@@ -449,11 +632,15 @@ static ssize_t store_min_perf_pct(struct kobject *a, struct attribute *b,
 	if (ret != 1)
 		return -EINVAL;
 
-	limits.min_sysfs_pct = clamp_t(int, input, 0 , 100);
-	limits.min_perf_pct = max(limits.min_policy_pct, limits.min_sysfs_pct);
-	limits.min_perf_pct = min(limits.max_policy_pct, limits.min_perf_pct);
-	limits.min_perf_pct = min(limits.max_perf_pct, limits.min_perf_pct);
-	limits.min_perf = div_fp(int_tofp(limits.min_perf_pct), int_tofp(100));
+	limits->min_sysfs_pct = clamp_t(int, input, 0 , 100);
+	limits->min_perf_pct = max(limits->min_policy_pct,
+				   limits->min_sysfs_pct);
+	limits->min_perf_pct = min(limits->max_policy_pct,
+				   limits->min_perf_pct);
+	limits->min_perf_pct = min(limits->max_perf_pct,
+				   limits->min_perf_pct);
+	limits->min_perf = div_fp(int_tofp(limits->min_perf_pct),
+				  int_tofp(100));
 
 	if (hwp_active)
 		intel_pstate_hwp_set();
@@ -533,7 +720,7 @@ static void byt_set_pstate(struct cpudata *cpudata, int pstate)
 	u32 vid;
 
 	val = (u64)pstate << 8;
-	if (limits.no_turbo && !limits.turbo_disabled)
+	if (limits->no_turbo && !limits->turbo_disabled)
 		val |= (u64)1 << 32;
 
 	vid_fp = cpudata->vid.min + mul_fp(
@@ -591,7 +778,7 @@ static int core_get_min_pstate(void)
 	return (value >> 40) & 0xFF;
 }
 
-static int core_get_max_pstate(void)
+static int core_get_max_pstate_physical(void)
 {
 	u64 value;
 
@@ -599,6 +786,46 @@ static int core_get_max_pstate(void)
 	return (value >> 8) & 0xFF;
 }
 
+static int core_get_max_pstate(void)
+{
+	u64 tar;
+	u64 plat_info;
+	int max_pstate;
+	int err;
+
+	rdmsrl(MSR_PLATFORM_INFO, plat_info);
+	max_pstate = (plat_info >> 8) & 0xFF;
+
+	err = rdmsrl_safe(MSR_TURBO_ACTIVATION_RATIO, &tar);
+	if (!err) {
+		/* Do some sanity checking for safety */
+		if (plat_info & 0x600000000) {
+			u64 tdp_ctrl;
+			u64 tdp_ratio;
+			int tdp_msr;
+
+			err = rdmsrl_safe(MSR_CONFIG_TDP_CONTROL, &tdp_ctrl);
+			if (err)
+				goto skip_tar;
+
+			tdp_msr = MSR_CONFIG_TDP_NOMINAL + tdp_ctrl;
+			err = rdmsrl_safe(tdp_msr, &tdp_ratio);
+			if (err)
+				goto skip_tar;
+
+			if (tdp_ratio - 1 == tar) {
+				max_pstate = tar;
+				pr_debug("max_pstate=TAC %x\n", max_pstate);
+			} else {
+				goto skip_tar;
+			}
+		}
+	}
+
+skip_tar:
+	return max_pstate;
+}
+
 static int core_get_turbo_pstate(void)
 {
 	u64 value;
@@ -622,7 +849,7 @@ static void core_set_pstate(struct cpudata *cpudata, int pstate)
 	u64 val;
 
 	val = (u64)pstate << 8;
-	if (limits.no_turbo && !limits.turbo_disabled)
+	if (limits->no_turbo && !limits->turbo_disabled)
 		val |= (u64)1 << 32;
 
 	wrmsrl_on_cpu(cpudata->cpu, MSR_IA32_PERF_CTL, val);
@@ -652,6 +879,7 @@ static struct cpu_defaults core_params = {
 	},
 	.funcs = {
 		.get_max = core_get_max_pstate,
+		.get_max_physical = core_get_max_pstate_physical,
 		.get_min = core_get_min_pstate,
 		.get_turbo = core_get_turbo_pstate,
 		.get_scaling = core_get_scaling,
@@ -670,6 +898,7 @@ static struct cpu_defaults byt_params = {
 	},
 	.funcs = {
 		.get_max = byt_get_max_pstate,
+		.get_max_physical = byt_get_max_pstate,
 		.get_min = byt_get_min_pstate,
 		.get_turbo = byt_get_turbo_pstate,
 		.set = byt_set_pstate,
@@ -689,6 +918,7 @@ static struct cpu_defaults knl_params = {
 	},
 	.funcs = {
 		.get_max = core_get_max_pstate,
+		.get_max_physical = core_get_max_pstate_physical,
 		.get_min = core_get_min_pstate,
 		.get_turbo = knl_get_turbo_pstate,
 		.get_scaling = core_get_scaling,
@@ -702,7 +932,7 @@ static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max)
 	int max_perf_adj;
 	int min_perf;
 
-	if (limits.no_turbo || limits.turbo_disabled)
+	if (limits->no_turbo || limits->turbo_disabled)
 		max_perf = cpu->pstate.max_pstate;
 
 	/*
@@ -710,12 +940,23 @@ static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max)
 	 * policy, or by cpu specific default values determined through
 	 * experimentation.
 	 */
-	max_perf_adj = fp_toint(mul_fp(int_tofp(max_perf), limits.max_perf));
-	*max = clamp_t(int, max_perf_adj,
-			cpu->pstate.min_pstate, cpu->pstate.turbo_pstate);
+	if (limits->max_perf_ctl && limits->max_sysfs_pct >=
+						limits->max_policy_pct) {
+		*max = limits->max_perf_ctl;
+	} else {
+		max_perf_adj = fp_toint(mul_fp(int_tofp(max_perf),
+					limits->max_perf));
+		*max = clamp_t(int, max_perf_adj, cpu->pstate.min_pstate,
+			       cpu->pstate.turbo_pstate);
+	}
 
-	min_perf = fp_toint(mul_fp(int_tofp(max_perf), limits.min_perf));
-	*min = clamp_t(int, min_perf, cpu->pstate.min_pstate, max_perf);
+	if (limits->min_perf_ctl) {
+		*min = limits->min_perf_ctl;
+	} else {
+		min_perf = fp_toint(mul_fp(int_tofp(max_perf),
+				    limits->min_perf));
+		*min = clamp_t(int, min_perf, cpu->pstate.min_pstate, max_perf);
+	}
 }
 
 static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate, bool force)
@@ -743,6 +984,7 @@ static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
 {
 	cpu->pstate.min_pstate = pstate_funcs.get_min();
 	cpu->pstate.max_pstate = pstate_funcs.get_max();
+	cpu->pstate.max_pstate_physical = pstate_funcs.get_max_physical();
 	cpu->pstate.turbo_pstate = pstate_funcs.get_turbo();
 	cpu->pstate.scaling = pstate_funcs.get_scaling();
 
@@ -761,7 +1003,8 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu)
 
 	sample->freq = fp_toint(
 		mul_fp(int_tofp(
-			cpu->pstate.max_pstate * cpu->pstate.scaling / 100),
+			cpu->pstate.max_pstate_physical *
+			cpu->pstate.scaling / 100),
 			core_pct));
 
 	sample->core_pct_busy = (int32_t)core_pct;
@@ -834,7 +1077,7 @@ static inline int32_t intel_pstate_get_scaled_busy(struct cpudata *cpu)
 	 * specified pstate.
 	 */
 	core_busy = cpu->sample.core_pct_busy;
-	max_pstate = int_tofp(cpu->pstate.max_pstate);
+	max_pstate = int_tofp(cpu->pstate.max_pstate_physical);
 	current_pstate = int_tofp(cpu->pstate.current_pstate);
 	core_busy = mul_fp(core_busy, div_fp(max_pstate, current_pstate));
 
@@ -988,37 +1231,63 @@ static unsigned int intel_pstate_get(unsigned int cpu_num)
 
 static int intel_pstate_set_policy(struct cpufreq_policy *policy)
 {
+#if IS_ENABLED(CONFIG_ACPI)
+	struct cpudata *cpu;
+	int i;
+#endif
+	pr_debug("intel_pstate: %s max %u policy->max %u\n", __func__,
+		 policy->cpuinfo.max_freq, policy->max);
 	if (!policy->cpuinfo.max_freq)
 		return -ENODEV;
 
 	if (policy->policy == CPUFREQ_POLICY_PERFORMANCE &&
 	    policy->max >= policy->cpuinfo.max_freq) {
-		limits.min_policy_pct = 100;
-		limits.min_perf_pct = 100;
-		limits.min_perf = int_tofp(1);
-		limits.max_policy_pct = 100;
-		limits.max_perf_pct = 100;
-		limits.max_perf = int_tofp(1);
-		limits.no_turbo = 0;
+		pr_debug("intel_pstate: set performance\n");
+		limits = &performance_limits;
 		return 0;
 	}
 
-	limits.min_policy_pct = (policy->min * 100) / policy->cpuinfo.max_freq;
-	limits.min_policy_pct = clamp_t(int, limits.min_policy_pct, 0 , 100);
-	limits.max_policy_pct = (policy->max * 100) / policy->cpuinfo.max_freq;
-	limits.max_policy_pct = clamp_t(int, limits.max_policy_pct, 0 , 100);
+	pr_debug("intel_pstate: set powersave\n");
+	limits = &powersave_limits;
+	limits->min_policy_pct = (policy->min * 100) / policy->cpuinfo.max_freq;
+	limits->min_policy_pct = clamp_t(int, limits->min_policy_pct, 0 , 100);
+	limits->max_policy_pct = (policy->max * 100) / policy->cpuinfo.max_freq;
+	limits->max_policy_pct = clamp_t(int, limits->max_policy_pct, 0 , 100);
 
 	/* Normalize user input to [min_policy_pct, max_policy_pct] */
-	limits.min_perf_pct = max(limits.min_policy_pct, limits.min_sysfs_pct);
-	limits.min_perf_pct = min(limits.max_policy_pct, limits.min_perf_pct);
-	limits.max_perf_pct = min(limits.max_policy_pct, limits.max_sysfs_pct);
-	limits.max_perf_pct = max(limits.min_policy_pct, limits.max_perf_pct);
+	limits->min_perf_pct = max(limits->min_policy_pct,
+				   limits->min_sysfs_pct);
+	limits->min_perf_pct = min(limits->max_policy_pct,
+				   limits->min_perf_pct);
+	limits->max_perf_pct = min(limits->max_policy_pct,
+				   limits->max_sysfs_pct);
+	limits->max_perf_pct = max(limits->min_policy_pct,
+				   limits->max_perf_pct);
 
 	/* Make sure min_perf_pct <= max_perf_pct */
-	limits.min_perf_pct = min(limits.max_perf_pct, limits.min_perf_pct);
+	limits->min_perf_pct = min(limits->max_perf_pct, limits->min_perf_pct);
 
-	limits.min_perf = div_fp(int_tofp(limits.min_perf_pct), int_tofp(100));
-	limits.max_perf = div_fp(int_tofp(limits.max_perf_pct), int_tofp(100));
+	limits->min_perf = div_fp(int_tofp(limits->min_perf_pct),
+				  int_tofp(100));
+	limits->max_perf = div_fp(int_tofp(limits->max_perf_pct),
+				  int_tofp(100));
+
+#if IS_ENABLED(CONFIG_ACPI)
+	cpu = all_cpu_data[policy->cpu];
+	for (i = 0; i < cpu->acpi_perf_data.state_count; i++) {
+		int control;
+
+		control = convert_to_native_pstate_format(cpu, i);
+		if (control * cpu->pstate.scaling == policy->max)
+			limits->max_perf_ctl = control;
+		if (control * cpu->pstate.scaling == policy->min)
+			limits->min_perf_ctl = control;
+	}
+
+	pr_debug("intel_pstate: max %u policy_max %u perf_ctl [0x%x-0x%x]\n",
+		 policy->cpuinfo.max_freq, policy->max, limits->min_perf_ctl,
+		 limits->max_perf_ctl);
+#endif
 
 	if (hwp_active)
 		intel_pstate_hwp_set();
@@ -1062,7 +1331,7 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
 
 	cpu = all_cpu_data[policy->cpu];
 
-	if (limits.min_perf_pct == 100 && limits.max_perf_pct == 100)
+	if (limits->min_perf_pct == 100 && limits->max_perf_pct == 100)
 		policy->policy = CPUFREQ_POLICY_PERFORMANCE;
 	else
 		policy->policy = CPUFREQ_POLICY_POWERSAVE;
@@ -1074,18 +1343,30 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
 	policy->cpuinfo.min_freq = cpu->pstate.min_pstate * cpu->pstate.scaling;
 	policy->cpuinfo.max_freq =
 		cpu->pstate.turbo_pstate * cpu->pstate.scaling;
+	if (!no_acpi_perf)
+		intel_pstate_init_perf_limits(policy);
+	/*
+	 * If there is no acpi perf data or error, we ignore and use Intel P
+	 * state calculated limits, So this is not fatal error.
+	 */
 	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
 	cpumask_set_cpu(policy->cpu, policy->cpus);
 
 	return 0;
 }
 
+static int intel_pstate_cpu_exit(struct cpufreq_policy *policy)
+{
+	return intel_pstate_exit_perf_limits(policy);
+}
+
 static struct cpufreq_driver intel_pstate_driver = {
 	.flags		= CPUFREQ_CONST_LOOPS,
 	.verify		= intel_pstate_verify_policy,
 	.setpolicy	= intel_pstate_set_policy,
 	.get		= intel_pstate_get,
 	.init		= intel_pstate_cpu_init,
+	.exit		= intel_pstate_cpu_exit,
 	.stop_cpu	= intel_pstate_stop_cpu,
 	.name		= "intel_pstate",
 };
@@ -1118,6 +1399,7 @@ static void copy_pid_params(struct pstate_adjust_policy *policy)
 static void copy_cpu_funcs(struct pstate_funcs *funcs)
 {
 	pstate_funcs.get_max   = funcs->get_max;
+	pstate_funcs.get_max_physical = funcs->get_max_physical;
 	pstate_funcs.get_min   = funcs->get_min;
 	pstate_funcs.get_turbo = funcs->get_turbo;
 	pstate_funcs.get_scaling = funcs->get_scaling;
@@ -1126,7 +1408,6 @@ static void copy_cpu_funcs(struct pstate_funcs *funcs)
 }
 
 #if IS_ENABLED(CONFIG_ACPI)
-#include <acpi/processor.h>
 
 static bool intel_pstate_no_acpi_pss(void)
 {
@@ -1318,6 +1599,9 @@ static int __init intel_pstate_setup(char *str)
 		force_load = 1;
 	if (!strcmp(str, "hwp_only"))
 		hwp_only = 1;
+	if (!strcmp(str, "no_acpi"))
+		no_acpi_perf = 1;
+
 	return 0;
 }
 early_param("intel_pstate", intel_pstate_setup);
diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c
index 49caed293a3b..83001dc5b646 100644
--- a/drivers/cpufreq/mt8173-cpufreq.c
+++ b/drivers/cpufreq/mt8173-cpufreq.c
@@ -344,7 +344,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
 	/* Both presence and absence of sram regulator are valid cases. */
 	sram_reg = regulator_get_exclusive(cpu_dev, "sram");
 
-	ret = of_init_opp_table(cpu_dev);
+	ret = dev_pm_opp_of_add_table(cpu_dev);
 	if (ret) {
 		pr_warn("no OPP table for cpu%d\n", cpu);
 		goto out_free_resources;
@@ -378,7 +378,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
 	return 0;
 
 out_free_opp_table:
-	of_free_opp_table(cpu_dev);
+	dev_pm_opp_of_remove_table(cpu_dev);
 
 out_free_resources:
 	if (!IS_ERR(proc_reg))
@@ -404,7 +404,7 @@ static void mtk_cpu_dvfs_info_release(struct mtk_cpu_dvfs_info *info)
 	if (!IS_ERR(info->inter_clk))
 		clk_put(info->inter_clk);
 
-	of_free_opp_table(info->cpu_dev);
+	dev_pm_opp_of_remove_table(info->cpu_dev);
 }
 
 static int mtk_cpufreq_init(struct cpufreq_policy *policy)
diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 64994e10638e..cb501386eb6e 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -327,8 +327,14 @@ static void powernv_cpufreq_throttle_check(void *data)
 		if (chips[i].throttled)
 			goto next;
 		chips[i].throttled = true;
-		pr_info("CPU %d on Chip %u has Pmax reduced to %d\n", cpu,
-			chips[i].id, pmsr_pmax);
+		if (pmsr_pmax < powernv_pstate_info.nominal)
+			pr_crit("CPU %d on Chip %u has Pmax reduced below nominal frequency (%d < %d)\n",
+				cpu, chips[i].id, pmsr_pmax,
+				powernv_pstate_info.nominal);
+		else
+			pr_info("CPU %d on Chip %u has Pmax reduced below turbo frequency (%d < %d)\n",
+				cpu, chips[i].id, pmsr_pmax,
+				powernv_pstate_info.max);
 	} else if (chips[i].throttled) {
 		chips[i].throttled = false;
 		pr_info("CPU %d on Chip %u has Pmax restored to %d\n", cpu,
diff --git a/drivers/cpufreq/tegra20-cpufreq.c b/drivers/cpufreq/tegra20-cpufreq.c
index 8084c7f7e206..2bd62845e9d5 100644
--- a/drivers/cpufreq/tegra20-cpufreq.c
+++ b/drivers/cpufreq/tegra20-cpufreq.c
@@ -175,9 +175,7 @@ static struct cpufreq_driver tegra_cpufreq_driver = {
 	.exit			= tegra_cpu_exit,
 	.name			= "tegra",
 	.attr			= cpufreq_generic_attr,
-#ifdef CONFIG_PM
 	.suspend		= cpufreq_generic_suspend,
-#endif
 };
 
 static int __init tegra_cpufreq_init(void)
diff --git a/drivers/cpuidle/cpuidle-mvebu-v7.c b/drivers/cpuidle/cpuidle-mvebu-v7.c
index 980151f34707..01a856971f05 100644
--- a/drivers/cpuidle/cpuidle-mvebu-v7.c
+++ b/drivers/cpuidle/cpuidle-mvebu-v7.c
@@ -99,44 +99,40 @@ static struct cpuidle_driver armada38x_idle_driver = {
 
 static int mvebu_v7_cpuidle_probe(struct platform_device *pdev)
 {
-	mvebu_v7_cpu_suspend = pdev->dev.platform_data;
+	const struct platform_device_id *id = pdev->id_entry;
 
-	if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-xp"))
-		return cpuidle_register(&armadaxp_idle_driver, NULL);
-	else if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-370"))
-		return cpuidle_register(&armada370_idle_driver, NULL);
-	else if (!strcmp(pdev->dev.driver->name, "cpuidle-armada-38x"))
-		return cpuidle_register(&armada38x_idle_driver, NULL);
-	else
+	if (!id)
 		return -EINVAL;
-}
 
-static struct platform_driver armadaxp_cpuidle_plat_driver = {
-	.driver = {
-		.name = "cpuidle-armada-xp",
-	},
-	.probe = mvebu_v7_cpuidle_probe,
-};
+	mvebu_v7_cpu_suspend = pdev->dev.platform_data;
 
-module_platform_driver(armadaxp_cpuidle_plat_driver);
+	return cpuidle_register((struct cpuidle_driver *)id->driver_data, NULL);
+}
 
-static struct platform_driver armada370_cpuidle_plat_driver = {
-	.driver = {
+static const struct platform_device_id mvebu_cpuidle_ids[] = {
+	{
+		.name = "cpuidle-armada-xp",
+		.driver_data = (unsigned long)&armadaxp_idle_driver,
+	}, {
 		.name = "cpuidle-armada-370",
+		.driver_data = (unsigned long)&armada370_idle_driver,
+	}, {
+		.name = "cpuidle-armada-38x",
+		.driver_data = (unsigned long)&armada38x_idle_driver,
 	},
-	.probe = mvebu_v7_cpuidle_probe,
+	{}
 };
 
-module_platform_driver(armada370_cpuidle_plat_driver);
-
-static struct platform_driver armada38x_cpuidle_plat_driver = {
+static struct platform_driver mvebu_cpuidle_driver = {
+	.probe = mvebu_v7_cpuidle_probe,
 	.driver = {
-		.name = "cpuidle-armada-38x",
+		.name = "cpuidle-mbevu",
+		.suppress_bind_attrs = true,
 	},
-	.probe = mvebu_v7_cpuidle_probe,
+	.id_table = mvebu_cpuidle_ids,
 };
 
-module_platform_driver(armada38x_cpuidle_plat_driver);
+builtin_platform_driver(mvebu_cpuidle_driver);
 
 MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
 MODULE_DESCRIPTION("Marvell EBU v7 cpuidle driver");
diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c
index 5a635646e05c..981a38fc4cb8 100644
--- a/drivers/dma/acpi-dma.c
+++ b/drivers/dma/acpi-dma.c
@@ -21,6 +21,7 @@
 #include <linux/ioport.h>
 #include <linux/acpi.h>
 #include <linux/acpi_dma.h>
+#include <linux/property.h>
 
 static LIST_HEAD(acpi_dma_list);
 static DEFINE_MUTEX(acpi_dma_lock);
@@ -413,21 +414,29 @@ EXPORT_SYMBOL_GPL(acpi_dma_request_slave_chan_by_index);
  * translate the names "tx" and "rx" here based on the most common case where
  * the first FixedDMA descriptor is TX and second is RX.
  *
+ * If the device has "dma-names" property the FixedDMA descriptor indices
+ * are retrieved based on those. Otherwise the function falls back using
+ * hardcoded indices.
+ *
  * Return:
  * Pointer to appropriate dma channel on success or an error pointer.
  */
 struct dma_chan *acpi_dma_request_slave_chan_by_name(struct device *dev,
 		const char *name)
 {
-	size_t index;
-
-	if (!strcmp(name, "tx"))
-		index = 0;
-	else if (!strcmp(name, "rx"))
-		index = 1;
-	else
-		return ERR_PTR(-ENODEV);
+	int index;
+
+	index = device_property_match_string(dev, "dma-names", name);
+	if (index < 0) {
+		if (!strcmp(name, "tx"))
+			index = 0;
+		else if (!strcmp(name, "rx"))
+			index = 1;
+		else
+			return ERR_PTR(-ENODEV);
+	}
 
+	dev_dbg(dev, "found DMA channel \"%s\" at index %d\n", name, index);
 	return acpi_dma_request_slave_chan_by_index(dev, index);
 }
 EXPORT_SYMBOL_GPL(acpi_dma_request_slave_chan_by_name);
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index bbcac3af2a7a..16a7b6816744 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -388,6 +388,8 @@ struct acpi_gpio_lookup {
 	struct acpi_gpio_info info;
 	int index;
 	int pin_index;
+	bool active_low;
+	struct acpi_device *adev;
 	struct gpio_desc *desc;
 	int n;
 };
@@ -424,6 +426,65 @@ static int acpi_find_gpio(struct acpi_resource *ares, void *data)
 	return 1;
 }
 
+static int acpi_gpio_resource_lookup(struct acpi_gpio_lookup *lookup,
+				     struct acpi_gpio_info *info)
+{
+	struct list_head res_list;
+	int ret;
+
+	INIT_LIST_HEAD(&res_list);
+
+	ret = acpi_dev_get_resources(lookup->adev, &res_list, acpi_find_gpio,
+				     lookup);
+	if (ret < 0)
+		return ret;
+
+	acpi_dev_free_resource_list(&res_list);
+
+	if (!lookup->desc)
+		return -ENOENT;
+
+	if (info) {
+		*info = lookup->info;
+		if (lookup->active_low)
+			info->active_low = lookup->active_low;
+	}
+	return 0;
+}
+
+static int acpi_gpio_property_lookup(struct fwnode_handle *fwnode,
+				     const char *propname, int index,
+				     struct acpi_gpio_lookup *lookup)
+{
+	struct acpi_reference_args args;
+	int ret;
+
+	memset(&args, 0, sizeof(args));
+	ret = acpi_node_get_property_reference(fwnode, propname, index, &args);
+	if (ret) {
+		struct acpi_device *adev = to_acpi_device_node(fwnode);
+
+		if (!adev)
+			return ret;
+
+		if (!acpi_get_driver_gpio_data(adev, propname, index, &args))
+			return ret;
+	}
+	/*
+	 * The property was found and resolved, so need to lookup the GPIO based
+	 * on returned args.
+	 */
+	lookup->adev = args.adev;
+	if (args.nargs >= 2) {
+		lookup->index = args.args[0];
+		lookup->pin_index = args.args[1];
+		/* 3rd argument, if present is used to specify active_low. */
+		if (args.nargs >= 3)
+			lookup->active_low = !!args.args[2];
+	}
+	return 0;
+}
+
 /**
  * acpi_get_gpiod_by_index() - get a GPIO descriptor from device resources
  * @adev: pointer to a ACPI device to get GPIO from
@@ -451,8 +512,6 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
 					  struct acpi_gpio_info *info)
 {
 	struct acpi_gpio_lookup lookup;
-	struct list_head resource_list;
-	bool active_low = false;
 	int ret;
 
 	if (!adev)
@@ -462,58 +521,64 @@ struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
 	lookup.index = index;
 
 	if (propname) {
-		struct acpi_reference_args args;
-
 		dev_dbg(&adev->dev, "GPIO: looking up %s\n", propname);
 
-		memset(&args, 0, sizeof(args));
-		ret = acpi_dev_get_property_reference(adev, propname,
-						      index, &args);
-		if (ret) {
-			bool found = acpi_get_driver_gpio_data(adev, propname,
-							       index, &args);
-			if (!found)
-				return ERR_PTR(ret);
-		}
+		ret = acpi_gpio_property_lookup(acpi_fwnode_handle(adev),
+						propname, index, &lookup);
+		if (ret)
+			return ERR_PTR(ret);
 
-		/*
-		 * The property was found and resolved so need to
-		 * lookup the GPIO based on returned args instead.
-		 */
-		adev = args.adev;
-		if (args.nargs >= 2) {
-			lookup.index = args.args[0];
-			lookup.pin_index = args.args[1];
-			/*
-			 * 3rd argument, if present is used to
-			 * specify active_low.
-			 */
-			if (args.nargs >= 3)
-				active_low = !!args.args[2];
-		}
-
-		dev_dbg(&adev->dev, "GPIO: _DSD returned %s %zd %llu %llu %llu\n",
-			dev_name(&adev->dev), args.nargs,
-			args.args[0], args.args[1], args.args[2]);
+		dev_dbg(&adev->dev, "GPIO: _DSD returned %s %d %d %u\n",
+			dev_name(&lookup.adev->dev), lookup.index,
+			lookup.pin_index, lookup.active_low);
 	} else {
 		dev_dbg(&adev->dev, "GPIO: looking up %d in _CRS\n", index);
+		lookup.adev = adev;
 	}
 
-	INIT_LIST_HEAD(&resource_list);
-	ret = acpi_dev_get_resources(adev, &resource_list, acpi_find_gpio,
-				     &lookup);
-	if (ret < 0)
-		return ERR_PTR(ret);
+	ret = acpi_gpio_resource_lookup(&lookup, info);
+	return ret ? ERR_PTR(ret) : lookup.desc;
+}
+
+/**
+ * acpi_node_get_gpiod() - get a GPIO descriptor from ACPI resources
+ * @fwnode: pointer to an ACPI firmware node to get the GPIO information from
+ * @propname: Property name of the GPIO
+ * @index: index of GpioIo/GpioInt resource (starting from %0)
+ * @info: info pointer to fill in (optional)
+ *
+ * If @fwnode is an ACPI device object, call %acpi_get_gpiod_by_index() for it.
+ * Otherwise (ie. it is a data-only non-device object), use the property-based
+ * GPIO lookup to get to the GPIO resource with the relevant information and use
+ * that to obtain the GPIO descriptor to return.
+ */
+struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
+				      const char *propname, int index,
+				      struct acpi_gpio_info *info)
+{
+	struct acpi_gpio_lookup lookup;
+	struct acpi_device *adev;
+	int ret;
 
-	acpi_dev_free_resource_list(&resource_list);
+	adev = to_acpi_device_node(fwnode);
+	if (adev)
+		return acpi_get_gpiod_by_index(adev, propname, index, info);
 
-	if (lookup.desc && info) {
-		*info = lookup.info;
-		if (active_low)
-			info->active_low = active_low;
-	}
+	if (!is_acpi_data_node(fwnode))
+		return ERR_PTR(-ENODEV);
+
+	if (!propname)
+		return ERR_PTR(-EINVAL);
+
+	memset(&lookup, 0, sizeof(lookup));
+	lookup.index = index;
+
+	ret = acpi_gpio_property_lookup(fwnode, propname, index, &lookup);
+	if (ret)
+		return ERR_PTR(ret);
 
-	return lookup.desc ? lookup.desc : ERR_PTR(-ENOENT);
+	ret = acpi_gpio_resource_lookup(&lookup, info);
+	return ret ? ERR_PTR(ret) : lookup.desc;
 }
 
 /**
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 6798355c61c6..a18f00fc1bb8 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2209,8 +2209,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
 	} else if (is_acpi_node(fwnode)) {
 		struct acpi_gpio_info info;
 
-		desc = acpi_get_gpiod_by_index(to_acpi_node(fwnode), propname, 0,
-					       &info);
+		desc = acpi_node_get_gpiod(fwnode, propname, 0, &info);
 		if (!IS_ERR(desc))
 			active_low = info.active_low;
 	}
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 78e634d1c719..98ab08c0aa2d 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -42,6 +42,9 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip);
 struct gpio_desc *acpi_get_gpiod_by_index(struct acpi_device *adev,
 					  const char *propname, int index,
 					  struct acpi_gpio_info *info);
+struct gpio_desc *acpi_node_get_gpiod(struct fwnode_handle *fwnode,
+				      const char *propname, int index,
+				      struct acpi_gpio_info *info);
 
 int acpi_gpio_count(struct device *dev, const char *con_id);
 #else
@@ -60,7 +63,12 @@ acpi_get_gpiod_by_index(struct acpi_device *adev, const char *propname,
 {
 	return ERR_PTR(-ENOSYS);
 }
-
+static inline struct gpio_desc *
+acpi_node_get_gpiod(struct fwnode_handle *fwnode, const char *propname,
+		    int index, struct acpi_gpio_info *info)
+{
+	return ERR_PTR(-ENXIO);
+}
 static inline int acpi_gpio_count(struct device *dev, const char *con_id)
 {
 	return -ENODEV;
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index db91de539ee3..454195709a82 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -24,6 +24,7 @@
 #include <linux/platform_device.h>
 #include <linux/i8042.h>
 #include <linux/slab.h>
+#include <linux/suspend.h>
 
 #include <asm/io.h>
 
@@ -1170,7 +1171,8 @@ static int i8042_pm_suspend(struct device *dev)
 {
 	int i;
 
-	i8042_controller_reset(true);
+	if (pm_suspend_via_firmware())
+		i8042_controller_reset(true);
 
 	/* Set up serio interrupts for system wakeup. */
 	for (i = 0; i < I8042_NUM_PORTS; i++) {
@@ -1183,8 +1185,17 @@ static int i8042_pm_suspend(struct device *dev)
 	return 0;
 }
 
+static int i8042_pm_resume_noirq(struct device *dev)
+{
+	if (!pm_resume_via_firmware())
+		i8042_interrupt(0, NULL);
+
+	return 0;
+}
+
 static int i8042_pm_resume(struct device *dev)
 {
+	bool force_reset;
 	int i;
 
 	for (i = 0; i < I8042_NUM_PORTS; i++) {
@@ -1195,11 +1206,21 @@ static int i8042_pm_resume(struct device *dev)
 	}
 
 	/*
-	 * On resume from S2R we always try to reset the controller
-	 * to bring it in a sane state. (In case of S2D we expect
-	 * BIOS to reset the controller for us.)
+	 * If platform firmware was not going to be involved in suspend, we did
+	 * not restore the controller state to whatever it had been at boot
+	 * time, so we do not need to do anything.
 	 */
-	return i8042_controller_resume(true);
+	if (!pm_suspend_via_firmware())
+		return 0;
+
+	/*
+	 * We only need to reset the controller if we are resuming after handing
+	 * off control to the platform firmware, otherwise we can simply restore
+	 * the mode.
+	 */
+	force_reset = pm_resume_via_firmware();
+
+	return i8042_controller_resume(force_reset);
 }
 
 static int i8042_pm_thaw(struct device *dev)
@@ -1223,6 +1244,7 @@ static int i8042_pm_restore(struct device *dev)
 
 static const struct dev_pm_ops i8042_pm_ops = {
 	.suspend	= i8042_pm_suspend,
+	.resume_noirq	= i8042_pm_resume_noirq,
 	.resume		= i8042_pm_resume,
 	.thaw		= i8042_pm_thaw,
 	.poweroff	= i8042_pm_reset,
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 1d0e76855106..515c823c1c95 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -41,7 +41,6 @@
 #include <linux/irqchip.h>
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqchip/arm-gic.h>
-#include <linux/irqchip/arm-gic-acpi.h>
 
 #include <asm/cputype.h>
 #include <asm/irq.h>
@@ -1219,7 +1218,7 @@ IRQCHIP_DECLARE(pl390, "arm,pl390", gic_of_init);
 #endif
 
 #ifdef CONFIG_ACPI
-static phys_addr_t dist_phy_base, cpu_phy_base __initdata;
+static phys_addr_t cpu_phy_base __initdata;
 
 static int __init
 gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
@@ -1247,61 +1246,57 @@ gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
 	return 0;
 }
 
-static int __init
-gic_acpi_parse_madt_distributor(struct acpi_subtable_header *header,
-				const unsigned long end)
+/* The things you have to do to just *count* something... */
+static int __init acpi_dummy_func(struct acpi_subtable_header *header,
+				  const unsigned long end)
 {
-	struct acpi_madt_generic_distributor *dist;
+	return 0;
+}
 
-	dist = (struct acpi_madt_generic_distributor *)header;
+static bool __init acpi_gic_redist_is_present(void)
+{
+	return acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR,
+				     acpi_dummy_func, 0) > 0;
+}
 
-	if (BAD_MADT_ENTRY(dist, end))
-		return -EINVAL;
+static bool __init gic_validate_dist(struct acpi_subtable_header *header,
+				     struct acpi_probe_entry *ape)
+{
+	struct acpi_madt_generic_distributor *dist;
+	dist = (struct acpi_madt_generic_distributor *)header;
 
-	dist_phy_base = dist->base_address;
-	return 0;
+	return (dist->version == ape->driver_data &&
+		(dist->version != ACPI_MADT_GIC_VERSION_NONE ||
+		 !acpi_gic_redist_is_present()));
 }
 
-int __init
-gic_v2_acpi_init(struct acpi_table_header *table)
+#define ACPI_GICV2_DIST_MEM_SIZE	(SZ_4K)
+#define ACPI_GIC_CPU_IF_MEM_SIZE	(SZ_8K)
+
+static int __init gic_v2_acpi_init(struct acpi_subtable_header *header,
+				   const unsigned long end)
 {
+	struct acpi_madt_generic_distributor *dist;
 	void __iomem *cpu_base, *dist_base;
 	struct fwnode_handle *domain_handle;
 	int count;
 
 	/* Collect CPU base addresses */
-	count = acpi_parse_entries(ACPI_SIG_MADT,
-				   sizeof(struct acpi_table_madt),
-				   gic_acpi_parse_madt_cpu, table,
-				   ACPI_MADT_TYPE_GENERIC_INTERRUPT, 0);
+	count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT,
+				      gic_acpi_parse_madt_cpu, 0);
 	if (count <= 0) {
 		pr_err("No valid GICC entries exist\n");
 		return -EINVAL;
 	}
 
-	/*
-	 * Find distributor base address. We expect one distributor entry since
-	 * ACPI 5.1 spec neither support multi-GIC instances nor GIC cascade.
-	 */
-	count = acpi_parse_entries(ACPI_SIG_MADT,
-				   sizeof(struct acpi_table_madt),
-				   gic_acpi_parse_madt_distributor, table,
-				   ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR, 0);
-	if (count <= 0) {
-		pr_err("No valid GICD entries exist\n");
-		return -EINVAL;
-	} else if (count > 1) {
-		pr_err("More than one GICD entry detected\n");
-		return -EINVAL;
-	}
-
 	cpu_base = ioremap(cpu_phy_base, ACPI_GIC_CPU_IF_MEM_SIZE);
 	if (!cpu_base) {
 		pr_err("Unable to map GICC registers\n");
 		return -ENOMEM;
 	}
 
-	dist_base = ioremap(dist_phy_base, ACPI_GICV2_DIST_MEM_SIZE);
+	dist = (struct acpi_madt_generic_distributor *)header;
+	dist_base = ioremap(dist->base_address, ACPI_GICV2_DIST_MEM_SIZE);
 	if (!dist_base) {
 		pr_err("Unable to map GICD registers\n");
 		iounmap(cpu_base);
@@ -1332,4 +1327,10 @@ gic_v2_acpi_init(struct acpi_table_header *table)
 	acpi_set_irq_model(ACPI_IRQ_MODEL_GIC, domain_handle);
 	return 0;
 }
+IRQCHIP_ACPI_DECLARE(gic_v2, ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR,
+		     gic_validate_dist, ACPI_MADT_GIC_VERSION_V2,
+		     gic_v2_acpi_init);
+IRQCHIP_ACPI_DECLARE(gic_v2_maybe, ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR,
+		     gic_validate_dist, ACPI_MADT_GIC_VERSION_NONE,
+		     gic_v2_acpi_init);
 #endif
diff --git a/drivers/irqchip/irqchip.c b/drivers/irqchip/irqchip.c
index afd1af3dfe5a..2b35e68bea82 100644
--- a/drivers/irqchip/irqchip.c
+++ b/drivers/irqchip/irqchip.c
@@ -8,7 +8,7 @@
  * warranty of any kind, whether express or implied.
  */
 
-#include <linux/acpi_irq.h>
+#include <linux/acpi.h>
 #include <linux/init.h>
 #include <linux/of_irq.h>
 #include <linux/irqchip.h>
@@ -27,6 +27,5 @@ extern struct of_device_id __irqchip_of_table[];
 void __init irqchip_init(void)
 {
 	of_irq_init(__irqchip_of_table);
-
-	acpi_irq_init();
+	acpi_probe_device_table(irqchip);
 }
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 108a3118ace7..306124bba61e 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -684,10 +684,16 @@ static int pci_pm_prepare(struct device *dev)
 	return pci_dev_keep_suspended(to_pci_dev(dev));
 }
 
+static void pci_pm_complete(struct device *dev)
+{
+	pci_dev_complete_resume(to_pci_dev(dev));
+	pm_complete_with_resume_check(dev);
+}
 
 #else /* !CONFIG_PM_SLEEP */
 
 #define pci_pm_prepare	NULL
+#define pci_pm_complete	NULL
 
 #endif /* !CONFIG_PM_SLEEP */
 
@@ -1218,6 +1224,7 @@ static int pci_pm_runtime_idle(struct device *dev)
 
 static const struct dev_pm_ops pci_dev_pm_ops = {
 	.prepare = pci_pm_prepare,
+	.complete = pci_pm_complete,
 	.suspend = pci_pm_suspend,
 	.resume = pci_pm_resume,
 	.freeze = pci_pm_freeze,
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 6a9a1116f1eb..78693fc5dbe9 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1710,15 +1710,7 @@ static void pci_pme_list_scan(struct work_struct *work)
 	mutex_unlock(&pci_pme_list_mutex);
 }
 
-/**
- * pci_pme_active - enable or disable PCI device's PME# function
- * @dev: PCI device to handle.
- * @enable: 'true' to enable PME# generation; 'false' to disable it.
- *
- * The caller must verify that the device is capable of generating PME# before
- * calling this function with @enable equal to 'true'.
- */
-void pci_pme_active(struct pci_dev *dev, bool enable)
+static void __pci_pme_active(struct pci_dev *dev, bool enable)
 {
 	u16 pmcsr;
 
@@ -1732,6 +1724,19 @@ void pci_pme_active(struct pci_dev *dev, bool enable)
 		pmcsr &= ~PCI_PM_CTRL_PME_ENABLE;
 
 	pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr);
+}
+
+/**
+ * pci_pme_active - enable or disable PCI device's PME# function
+ * @dev: PCI device to handle.
+ * @enable: 'true' to enable PME# generation; 'false' to disable it.
+ *
+ * The caller must verify that the device is capable of generating PME# before
+ * calling this function with @enable equal to 'true'.
+ */
+void pci_pme_active(struct pci_dev *dev, bool enable)
+{
+	__pci_pme_active(dev, enable);
 
 	/*
 	 * PCI (as opposed to PCIe) PME requires that the device have
@@ -2032,17 +2037,60 @@ EXPORT_SYMBOL_GPL(pci_dev_run_wake);
  * reconfigured due to wakeup settings difference between system and runtime
  * suspend and the current power state of it is suitable for the upcoming
  * (system) transition.
+ *
+ * If the device is not configured for system wakeup, disable PME for it before
+ * returning 'true' to prevent it from waking up the system unnecessarily.
  */
 bool pci_dev_keep_suspended(struct pci_dev *pci_dev)
 {
 	struct device *dev = &pci_dev->dev;
 
 	if (!pm_runtime_suspended(dev)
-	    || (device_can_wakeup(dev) && !device_may_wakeup(dev))
+	    || pci_target_state(pci_dev) != pci_dev->current_state
 	    || platform_pci_need_resume(pci_dev))
 		return false;
 
-	return pci_target_state(pci_dev) == pci_dev->current_state;
+	/*
+	 * At this point the device is good to go unless it's been configured
+	 * to generate PME at the runtime suspend time, but it is not supposed
+	 * to wake up the system.  In that case, simply disable PME for it
+	 * (it will have to be re-enabled on exit from system resume).
+	 *
+	 * If the device's power state is D3cold and the platform check above
+	 * hasn't triggered, the device's configuration is suitable and we don't
+	 * need to manipulate it at all.
+	 */
+	spin_lock_irq(&dev->power.lock);
+
+	if (pm_runtime_suspended(dev) && pci_dev->current_state < PCI_D3cold &&
+	    !device_may_wakeup(dev))
+		__pci_pme_active(pci_dev, false);
+
+	spin_unlock_irq(&dev->power.lock);
+	return true;
+}
+
+/**
+ * pci_dev_complete_resume - Finalize resume from system sleep for a device.
+ * @pci_dev: Device to handle.
+ *
+ * If the device is runtime suspended and wakeup-capable, enable PME for it as
+ * it might have been disabled during the prepare phase of system suspend if
+ * the device was not configured for system wakeup.
+ */
+void pci_dev_complete_resume(struct pci_dev *pci_dev)
+{
+	struct device *dev = &pci_dev->dev;
+
+	if (!pci_dev_run_wake(pci_dev))
+		return;
+
+	spin_lock_irq(&dev->power.lock);
+
+	if (pm_runtime_suspended(dev) && pci_dev->current_state < PCI_D3cold)
+		__pci_pme_active(pci_dev, true);
+
+	spin_unlock_irq(&dev->power.lock);
 }
 
 void pci_config_pm_runtime_get(struct pci_dev *pdev)
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 24ba9dc8910a..037e787a3ad5 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -75,6 +75,7 @@ void pci_disable_enabled_device(struct pci_dev *dev);
 int pci_finish_runtime_suspend(struct pci_dev *dev);
 int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
 bool pci_dev_keep_suspended(struct pci_dev *dev);
+void pci_dev_complete_resume(struct pci_dev *pci_dev);
 void pci_config_pm_runtime_get(struct pci_dev *dev);
 void pci_config_pm_runtime_put(struct pci_dev *dev);
 void pci_pm_init(struct pci_dev *dev);
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 5153d1d69aee..9113876487ed 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -207,7 +207,7 @@ struct pnp_protocol pnpacpi_protocol = {
 };
 EXPORT_SYMBOL(pnpacpi_protocol);
 
-static char *__init pnpacpi_get_id(struct acpi_device *device)
+static const char *__init pnpacpi_get_id(struct acpi_device *device)
 {
 	struct acpi_hardware_id *id;
 
@@ -222,7 +222,7 @@ static char *__init pnpacpi_get_id(struct acpi_device *device)
 static int __init pnpacpi_add_device(struct acpi_device *device)
 {
 	struct pnp_dev *dev;
-	char *pnpid;
+	const char *pnpid;
 	struct acpi_hardware_id *id;
 	int error;
 
diff --git a/drivers/power/avs/rockchip-io-domain.c b/drivers/power/avs/rockchip-io-domain.c
index 2e300028f0f7..80994566a1c8 100644
--- a/drivers/power/avs/rockchip-io-domain.c
+++ b/drivers/power/avs/rockchip-io-domain.c
@@ -271,6 +271,7 @@ static const struct of_device_id rockchip_iodomain_match[] = {
 	},
 	{ /* sentinel */ },
 };
+MODULE_DEVICE_TABLE(of, rockchip_iodomain_match);
 
 static int rockchip_iodomain_probe(struct platform_device *pdev)
 {
diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c
index 5efacd050c7d..cc97f0869791 100644
--- a/drivers/powercap/intel_rapl.c
+++ b/drivers/powercap/intel_rapl.c
@@ -1102,6 +1102,7 @@ static const struct x86_cpu_id rapl_ids[] __initconst = {
 	RAPL_CPU(0x4A, rapl_defaults_tng),/* Tangier */
 	RAPL_CPU(0x56, rapl_defaults_core),/* Future Xeon */
 	RAPL_CPU(0x5A, rapl_defaults_ann),/* Annidale */
+	RAPL_CPU(0X5C, rapl_defaults_core),/* Broxton */
 	RAPL_CPU(0x5E, rapl_defaults_core),/* Skylake-H/S */
 	RAPL_CPU(0x57, rapl_defaults_hsw_server),/* Knights Landing */
 	{}
diff --git a/drivers/soc/dove/pmu.c b/drivers/soc/dove/pmu.c
index 052aecf29893..abd087917f80 100644
--- a/drivers/soc/dove/pmu.c
+++ b/drivers/soc/dove/pmu.c
@@ -396,7 +396,6 @@ int __init dove_init_pmu(void)
 
 		__pmu_domain_register(domain, np);
 	}
-	pm_genpd_poweroff_unused();
 
 	/* Loss of the interrupt controller is not a fatal error. */
 	parent_irq = irq_of_parse_and_map(pmu->of_node, 0);