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authorLinus Torvalds <torvalds@linux-foundation.org>2024-01-09 16:12:44 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2024-01-09 16:12:44 -0800
commitbd012f3a5b02849d9acc85e2b8b71293ce072263 (patch)
tree16612647c11d47f91000928b5ada9c1eab1c9a70 /include/acpi
parent35f11a3710cdcbbc5090d14017a6295454e0cc73 (diff)
parente46201308a1e568059328e200282c8a62faa2f19 (diff)
Merge tag 'acpi-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki: "From the new features standpoint, the most significant change here is the addition of CSI-2 and MIPI DisCo for Imaging support to the ACPI device enumeration code that will allow MIPI cameras to be enumerated through the platform firmware on systems using ACPI. Also significant is the switch-over to threaded interrupt handlers for the ACPI SCI and the dedicated EC interrupt (on systems where the former is not used) which essentially allows all ACPI code to run with local interrupts enabled. That should improve responsiveness significantly on systems where multiple GPEs are enabled and the handling of one SCI involves many I/O address space accesses which previously had to be carried out in one go with disabled interrupts on the local CPU. Apart from the above, the ACPI thermal zone driver will use the Thermal fast Sampling Period (_TFP) object if available, which should allow temperature changes to be followed more accurately on some systems, the ACPI Notify () handlers can run on all CPUs (not just on CPU0), which should generally speed up the processing of events signaled through the ACPI SCI, and the ACPI power button driver will trigger wakeup key events via the input subsystem (on systems where it is a system wakeup device) In addition to that, there are the usual bunch of fixes and cleanups. Specifics: - Add CSI-2 and DisCo for Imaging support to the ACPI device enumeration code (Sakari Ailus, Rafael J. Wysocki) - Adjust the cpufreq thermal reduction algorithm in the ACPI processor driver for Tegra241 (Srikar Srimath Tirumala, Arnd Bergmann) - Make acpi_proc_quirk_mwait_check() x86-specific (Rafael J. Wysocki) - Switch over ACPI to using a threaded interrupt handler for the SCI (Rafael J. Wysocki) - Allow ACPI Notify () handlers to run on all CPUs and clean up the ACPI interface for deferred events processing (Rafael J. Wysocki) - Switch over the ACPI EC driver to using a threaded handler for the dedicated IRQ on systems without the EC GPE (Rafael J. Wysocki) - Adjust code using ACPICA spinlocks and the ACPI EC driver spinlock to keep local interrupts on (Rafael J. Wysocki) - Adjust the USB4 _OSC handshake to correctly handle cases in which certain types of OS control are denied by the platform (Mika Westerberg) - Correct and clean up the generic function for parsing ACPI data-only tables with array structure (Yuntao Wang) - Modify acpi_dev_uid_match() to support different types of its second argument and adjust its users accordingly (Raag Jadav) - Clean up code related to acpi_evaluate_reference() and ACPI device lists (Rafael J. Wysocki) - Use generic ACPI helpers for evaluating trip point temperature objects in the ACPI thermal zone driver (Rafael J. Wysockii, Arnd Bergmann) - Add Thermal fast Sampling Period (_TFP) support to the ACPI thermal zone driver (Jeff Brasen) - Modify the ACPI LPIT table handling code to avoid u32 multiplication overflows in state residency computations (Nikita Kiryushin) - Drop an unused helper function from the ACPI backlight (video) driver and add a clarifying comment to it (Hans de Goede) - Update the ACPI backlight driver to avoid using uninitialized memory in some cases (Nikita Kiryushin) - Add ACPI backlight quirk for the Colorful X15 AT 23 laptop (Yuluo Qiu) - Add support for vendor-defined error types to the ACPI APEI error injection code (Avadhut Naik) - Adjust APEI to properly set MF_ACTION_REQUIRED on synchronous memory failure events, so they are handled differently from the asynchronous ones (Shuai Xue) - Fix NULL pointer dereference check in the ACPI extlog driver (Prarit Bhargava) - Adjust the ACPI extlog driver to clear the Extended Error Log status when RAS_CEC handled the error (Tony Luck) - Add IRQ override quirks for some Infinity laptops and for TongFang GMxXGxx (David McFarland, Hans de Goede) - Clean up the ACPI NUMA code and fix it to ensure that fake_pxm is not the same as one of the real pxm values (Yuntao Wang) - Fix the fractional clock divider flags in the ACPI LPSS (Intel SoC) driver so as to prevent miscalculation of the values in the clock divider (Andy Shevchenko) - Adjust comments in the ACPI watchdog driver to prevent kernel-doc from complaining during documentation builds (Randy Dunlap) - Make the ACPI button driver send wakeup key events to user space in addition to power button events on systems that can be woken up by the power button (Ken Xue) - Adjust pnpacpi_parse_allocated_vendor() to use memcpy() on a full structure field (Dmitry Antipov)" * tag 'acpi-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (56 commits) ACPI: resource: Add Infinity laptops to irq1_edge_low_force_override ACPI: button: trigger wakeup key events ACPI: resource: Add another DMI match for the TongFang GMxXGxx ACPI: EC: Use a spin lock without disabing interrupts ACPI: EC: Use a threaded handler for dedicated IRQ ACPI: OSL: Use spin locks without disabling interrupts ACPI: APEI: set memory failure flags as MF_ACTION_REQUIRED on synchronous events ACPI: utils: Introduce helper for _DEP list lookup ACPI: utils: Fix white space in struct acpi_handle_list definition ACPI: utils: Refine acpi_handle_list_equal() slightly ACPI: utils: Return bool from acpi_evaluate_reference() ACPI: utils: Rearrange in acpi_evaluate_reference() ACPI: arm64: export acpi_arch_thermal_cpufreq_pctg() ACPI: extlog: Clear Extended Error Log status when RAS_CEC handled the error ACPI: LPSS: Fix the fractional clock divider flags ACPI: NUMA: Fix the logic of getting the fake_pxm value ACPI: NUMA: Optimize the check for the availability of node values ACPI: NUMA: Remove unnecessary check in acpi_parse_gi_affinity() ACPI: watchdog: fix kernel-doc warnings ACPI: extlog: fix NULL pointer dereference check ...
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpi_bus.h169
-rw-r--r--include/acpi/video.h9
2 files changed, 170 insertions, 8 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 1216d72c650f..2b3ae51f950d 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -14,7 +14,7 @@
struct acpi_handle_list {
u32 count;
- acpi_handle* handles;
+ acpi_handle *handles;
};
/* acpi_utils.h */
@@ -25,16 +25,15 @@ acpi_status
acpi_evaluate_integer(acpi_handle handle,
acpi_string pathname,
struct acpi_object_list *arguments, unsigned long long *data);
-acpi_status
-acpi_evaluate_reference(acpi_handle handle,
- acpi_string pathname,
- struct acpi_object_list *arguments,
- struct acpi_handle_list *list);
+bool acpi_evaluate_reference(acpi_handle handle, acpi_string pathname,
+ struct acpi_object_list *arguments,
+ struct acpi_handle_list *list);
bool acpi_handle_list_equal(struct acpi_handle_list *list1,
struct acpi_handle_list *list2);
void acpi_handle_list_replace(struct acpi_handle_list *dst,
struct acpi_handle_list *src);
void acpi_handle_list_free(struct acpi_handle_list *list);
+bool acpi_device_dep(acpi_handle target, acpi_handle match);
acpi_status
acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
struct acpi_buffer *status_buf);
@@ -366,6 +365,98 @@ struct acpi_device_data {
struct acpi_gpio_mapping;
+#define ACPI_DEVICE_SWNODE_ROOT 0
+
+/*
+ * The maximum expected number of CSI-2 data lanes.
+ *
+ * This number is not expected to ever have to be equal to or greater than the
+ * number of bits in an unsigned long variable, but if it needs to be increased
+ * above that limit, code will need to be adjusted accordingly.
+ */
+#define ACPI_DEVICE_CSI2_DATA_LANES 8
+
+#define ACPI_DEVICE_SWNODE_PORT_NAME_LENGTH 8
+
+enum acpi_device_swnode_dev_props {
+ ACPI_DEVICE_SWNODE_DEV_ROTATION,
+ ACPI_DEVICE_SWNODE_DEV_CLOCK_FREQUENCY,
+ ACPI_DEVICE_SWNODE_DEV_LED_MAX_MICROAMP,
+ ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_MICROAMP,
+ ACPI_DEVICE_SWNODE_DEV_FLASH_MAX_TIMEOUT_US,
+ ACPI_DEVICE_SWNODE_DEV_NUM_OF,
+ ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES
+};
+
+enum acpi_device_swnode_port_props {
+ ACPI_DEVICE_SWNODE_PORT_REG,
+ ACPI_DEVICE_SWNODE_PORT_NUM_OF,
+ ACPI_DEVICE_SWNODE_PORT_NUM_ENTRIES
+};
+
+enum acpi_device_swnode_ep_props {
+ ACPI_DEVICE_SWNODE_EP_REMOTE_EP,
+ ACPI_DEVICE_SWNODE_EP_BUS_TYPE,
+ ACPI_DEVICE_SWNODE_EP_REG,
+ ACPI_DEVICE_SWNODE_EP_CLOCK_LANES,
+ ACPI_DEVICE_SWNODE_EP_DATA_LANES,
+ ACPI_DEVICE_SWNODE_EP_LANE_POLARITIES,
+ /* TX only */
+ ACPI_DEVICE_SWNODE_EP_LINK_FREQUENCIES,
+ ACPI_DEVICE_SWNODE_EP_NUM_OF,
+ ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES
+};
+
+/*
+ * Each device has a root software node plus two times as many nodes as the
+ * number of CSI-2 ports.
+ */
+#define ACPI_DEVICE_SWNODE_PORT(port) (2 * (port) + 1)
+#define ACPI_DEVICE_SWNODE_EP(endpoint) \
+ (ACPI_DEVICE_SWNODE_PORT(endpoint) + 1)
+
+/**
+ * struct acpi_device_software_node_port - MIPI DisCo for Imaging CSI-2 port
+ * @port_name: Port name.
+ * @data_lanes: "data-lanes" property values.
+ * @lane_polarities: "lane-polarities" property values.
+ * @link_frequencies: "link_frequencies" property values.
+ * @port_nr: Port number.
+ * @crs_crs2_local: _CRS CSI2 record present (i.e. this is a transmitter one).
+ * @port_props: Port properties.
+ * @ep_props: Endpoint properties.
+ * @remote_ep: Reference to the remote endpoint.
+ */
+struct acpi_device_software_node_port {
+ char port_name[ACPI_DEVICE_SWNODE_PORT_NAME_LENGTH + 1];
+ u32 data_lanes[ACPI_DEVICE_CSI2_DATA_LANES];
+ u32 lane_polarities[ACPI_DEVICE_CSI2_DATA_LANES + 1 /* clock lane */];
+ u64 link_frequencies[ACPI_DEVICE_CSI2_DATA_LANES];
+ unsigned int port_nr;
+ bool crs_csi2_local;
+
+ struct property_entry port_props[ACPI_DEVICE_SWNODE_PORT_NUM_ENTRIES];
+ struct property_entry ep_props[ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES];
+
+ struct software_node_ref_args remote_ep[1];
+};
+
+/**
+ * struct acpi_device_software_nodes - Software nodes for an ACPI device
+ * @dev_props: Device properties.
+ * @nodes: Software nodes for root as well as ports and endpoints.
+ * @nodeprts: Array of software node pointers, for (un)registering them.
+ * @ports: Information related to each port and endpoint within a port.
+ * @num_ports: The number of ports.
+ */
+struct acpi_device_software_nodes {
+ struct property_entry dev_props[ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES];
+ struct software_node *nodes;
+ const struct software_node **nodeptrs;
+ struct acpi_device_software_node_port *ports;
+ unsigned int num_ports;
+};
+
/* Device */
struct acpi_device {
u32 pld_crc;
@@ -384,6 +475,7 @@ struct acpi_device {
struct acpi_device_data data;
struct acpi_scan_handler *handler;
struct acpi_hotplug_context *hp;
+ struct acpi_device_software_nodes *swnodes;
const struct acpi_gpio_mapping *driver_gpios;
void *driver_data;
struct device dev;
@@ -764,10 +856,71 @@ static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
}
-bool acpi_dev_uid_match(struct acpi_device *adev, const char *uid2);
-bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
int acpi_dev_uid_to_integer(struct acpi_device *adev, u64 *integer);
+static inline bool acpi_dev_hid_match(struct acpi_device *adev, const char *hid2)
+{
+ const char *hid1 = acpi_device_hid(adev);
+
+ return hid1 && hid2 && !strcmp(hid1, hid2);
+}
+
+static inline bool acpi_str_uid_match(struct acpi_device *adev, const char *uid2)
+{
+ const char *uid1 = acpi_device_uid(adev);
+
+ return uid1 && uid2 && !strcmp(uid1, uid2);
+}
+
+static inline bool acpi_int_uid_match(struct acpi_device *adev, u64 uid2)
+{
+ u64 uid1;
+
+ return !acpi_dev_uid_to_integer(adev, &uid1) && uid1 == uid2;
+}
+
+#define TYPE_ENTRY(type, x) \
+ const type: x, \
+ type: x
+
+#define ACPI_STR_TYPES(match) \
+ TYPE_ENTRY(unsigned char *, match), \
+ TYPE_ENTRY(signed char *, match), \
+ TYPE_ENTRY(char *, match), \
+ TYPE_ENTRY(void *, match)
+
+/**
+ * acpi_dev_uid_match - Match device by supplied UID
+ * @adev: ACPI device to match.
+ * @uid2: Unique ID of the device.
+ *
+ * Matches UID in @adev with given @uid2.
+ *
+ * Returns: %true if matches, %false otherwise.
+ */
+#define acpi_dev_uid_match(adev, uid2) \
+ _Generic(uid2, \
+ /* Treat @uid2 as a string for acpi string types */ \
+ ACPI_STR_TYPES(acpi_str_uid_match), \
+ /* Treat as an integer otherwise */ \
+ default: acpi_int_uid_match)(adev, uid2)
+
+/**
+ * acpi_dev_hid_uid_match - Match device by supplied HID and UID
+ * @adev: ACPI device to match.
+ * @hid2: Hardware ID of the device.
+ * @uid2: Unique ID of the device, pass 0 or NULL to not check _UID.
+ *
+ * Matches HID and UID in @adev with given @hid2 and @uid2. Absence of @uid2
+ * will be treated as a match. If user wants to validate @uid2, it should be
+ * done before calling this function.
+ *
+ * Returns: %true if matches or @uid2 is 0 or NULL, %false otherwise.
+ */
+#define acpi_dev_hid_uid_match(adev, hid2, uid2) \
+ (acpi_dev_hid_match(adev, hid2) && \
+ (!(uid2) || acpi_dev_uid_match(adev, uid2)))
+
void acpi_dev_clear_dependencies(struct acpi_device *supplier);
bool acpi_dev_ready_for_enumeration(const struct acpi_device *device);
struct acpi_device *acpi_dev_get_next_consumer_dev(struct acpi_device *supplier,
diff --git a/include/acpi/video.h b/include/acpi/video.h
index 4230392b5b0b..3d538d4178ab 100644
--- a/include/acpi/video.h
+++ b/include/acpi/video.h
@@ -75,6 +75,15 @@ static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
return __acpi_video_get_backlight_type(false, NULL);
}
+/*
+ * This function MUST only be called by GPU drivers to check if the driver
+ * should register a backlight class device. This function not only checks
+ * if a GPU native backlight device should be registered it *also* tells
+ * the ACPI video-detect code that native GPU backlight control is available.
+ * Therefor calling this from any place other then the GPU driver is wrong!
+ * To check if GPU native backlight control is used in other places instead use:
+ * if (acpi_video_get_backlight_type() == acpi_backlight_native) { ... }
+ */
static inline bool acpi_video_backlight_use_native(void)
{
return __acpi_video_get_backlight_type(true, NULL) == acpi_backlight_native;