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-rw-r--r--Documentation/devicetree/bindings/rtc/abracon,abx80x.txt31
-rw-r--r--Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml98
-rw-r--r--Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml4
-rw-r--r--Documentation/devicetree/bindings/rtc/mediatek,mt2712-rtc.yaml39
-rw-r--r--Documentation/devicetree/bindings/rtc/mediatek,mt7622-rtc.yaml52
-rw-r--r--Documentation/devicetree/bindings/rtc/rtc-mt2712.txt14
-rw-r--r--Documentation/devicetree/bindings/rtc/rtc-mt7622.txt21
-rw-r--r--Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml11
-rw-r--r--MAINTAINERS5
-rw-r--r--drivers/rtc/Kconfig3
-rw-r--r--drivers/rtc/class.c21
-rw-r--r--drivers/rtc/interface.c2
-rw-r--r--drivers/rtc/rtc-ds1511.c340
-rw-r--r--drivers/rtc/rtc-m41t80.c5
-rw-r--r--drivers/rtc/rtc-max31335.c2
-rw-r--r--drivers/rtc/rtc-nct3018y.c6
-rw-r--r--drivers/rtc/rtc-pcf8523.c25
-rw-r--r--include/linux/rtc.h2
-rw-r--r--kernel/power/suspend_test.c2
-rw-r--r--kernel/time/alarmtimer.c2
20 files changed, 358 insertions, 327 deletions
diff --git a/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt b/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt
deleted file mode 100644
index 2405e35a1bc0..000000000000
--- a/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt
+++ /dev/null
@@ -1,31 +0,0 @@
-Abracon ABX80X I2C ultra low power RTC/Alarm chip
-
-The Abracon ABX80X family consist of the ab0801, ab0803, ab0804, ab0805, ab1801,
-ab1803, ab1804 and ab1805. The ab0805 is the superset of ab080x and the ab1805
-is the superset of ab180x.
-
-Required properties:
-
- - "compatible": should one of:
- "abracon,abx80x"
- "abracon,ab0801"
- "abracon,ab0803"
- "abracon,ab0804"
- "abracon,ab0805"
- "abracon,ab1801"
- "abracon,ab1803"
- "abracon,ab1804"
- "abracon,ab1805"
- "microcrystal,rv1805"
- Using "abracon,abx80x" will enable chip autodetection.
- - "reg": I2C bus address of the device
-
-Optional properties:
-
-The abx804 and abx805 have a trickle charger that is able to charge the
-connected battery or supercap. Both the following properties have to be defined
-and valid to enable charging:
-
- - "abracon,tc-diode": should be "standard" (0.6V) or "schottky" (0.3V)
- - "abracon,tc-resistor": should be <0>, <3>, <6> or <11>. 0 disables the output
- resistor, the other values are in kOhm.
diff --git a/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml b/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml
new file mode 100644
index 000000000000..355b0598411a
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/abracon,abx80x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Abracon ABX80X I2C ultra low power RTC/Alarm chip
+
+maintainers:
+ - linux-rtc@vger.kernel.org
+
+properties:
+ compatible:
+ description:
+ The wildcard 'abracon,abx80x' may be used to support a mix
+ of different abracon rtc`s. In this case the driver
+ must perform auto-detection from ID register.
+ enum:
+ - abracon,abx80x
+ - abracon,ab0801
+ - abracon,ab0803
+ - abracon,ab0804
+ - abracon,ab0805
+ - abracon,ab1801
+ - abracon,ab1803
+ - abracon,ab1804
+ - abracon,ab1805
+ - microcrystal,rv1805
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ abracon,tc-diode:
+ description:
+ Trickle-charge diode type.
+ Required to enable charging backup battery.
+
+ Supported are 'standard' diodes with a 0.6V drop
+ and 'schottky' diodes with a 0.3V drop.
+ $ref: /schemas/types.yaml#/definitions/string
+ enum:
+ - standard
+ - schottky
+
+ abracon,tc-resistor:
+ description:
+ Trickle-charge resistor value in kOhm.
+ Required to enable charging backup battery.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 3, 6, 11]
+
+dependentRequired:
+ abracon,tc-diode: ["abracon,tc-resistor"]
+ abracon,tc-resistor: ["abracon,tc-diode"]
+
+required:
+ - compatible
+ - reg
+
+allOf:
+ - $ref: rtc.yaml#
+ - if:
+ properties:
+ compatible:
+ not:
+ contains:
+ enum:
+ - abracon,abx80x
+ - abracon,ab0804
+ - abracon,ab1804
+ - abracon,ab0805
+ - abracon,ab1805
+ then:
+ properties:
+ abracon,tc-diode: false
+ abracon,tc-resistor: false
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rtc@69 {
+ compatible = "abracon,abx80x";
+ reg = <0x69>;
+ abracon,tc-diode = "schottky";
+ abracon,tc-resistor = <3>;
+ interrupts = <44 IRQ_TYPE_EDGE_FALLING>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml b/Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml
index b80b85c394ac..a7f6c1d1a08a 100644
--- a/Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml
+++ b/Documentation/devicetree/bindings/rtc/atmel,at91sam9260-rtt.yaml
@@ -19,7 +19,9 @@ properties:
- items:
- const: atmel,at91sam9260-rtt
- items:
- - const: microchip,sam9x60-rtt
+ - enum:
+ - microchip,sam9x60-rtt
+ - microchip,sam9x7-rtt
- const: atmel,at91sam9260-rtt
- items:
- const: microchip,sama7g5-rtt
diff --git a/Documentation/devicetree/bindings/rtc/mediatek,mt2712-rtc.yaml b/Documentation/devicetree/bindings/rtc/mediatek,mt2712-rtc.yaml
new file mode 100644
index 000000000000..75624ddf6d4d
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/mediatek,mt2712-rtc.yaml
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/mediatek,mt2712-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT2712 on-SoC RTC
+
+allOf:
+ - $ref: rtc.yaml#
+
+maintainers:
+ - Ran Bi <ran.bi@mediatek.com>
+
+properties:
+ compatible:
+ const: mediatek,mt2712-rtc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - reg
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ rtc@10011000 {
+ compatible = "mediatek,mt2712-rtc";
+ reg = <0x10011000 0x1000>;
+ interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_LOW>;
+ };
diff --git a/Documentation/devicetree/bindings/rtc/mediatek,mt7622-rtc.yaml b/Documentation/devicetree/bindings/rtc/mediatek,mt7622-rtc.yaml
new file mode 100644
index 000000000000..e74dfc161cfc
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/mediatek,mt7622-rtc.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/mediatek,mt7622-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT7622 on-SoC RTC
+
+allOf:
+ - $ref: rtc.yaml#
+
+maintainers:
+ - Sean Wang <sean.wang@mediatek.com>
+
+properties:
+ compatible:
+ items:
+ - const: mediatek,mt7622-rtc
+ - const: mediatek,soc-rtc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ const: rtc
+
+required:
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/mt7622-clk.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ rtc@10212800 {
+ compatible = "mediatek,mt7622-rtc", "mediatek,soc-rtc";
+ reg = <0x10212800 0x200>;
+ interrupts = <GIC_SPI 129 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&topckgen CLK_TOP_RTC>;
+ clock-names = "rtc";
+ };
diff --git a/Documentation/devicetree/bindings/rtc/rtc-mt2712.txt b/Documentation/devicetree/bindings/rtc/rtc-mt2712.txt
deleted file mode 100644
index c33d87e5e753..000000000000
--- a/Documentation/devicetree/bindings/rtc/rtc-mt2712.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-Device-Tree bindings for MediaTek SoC based RTC
-
-Required properties:
-- compatible : Should be "mediatek,mt2712-rtc" : for MT2712 SoC
-- reg : Specifies base physical address and size of the registers;
-- interrupts : Should contain the interrupt for RTC alarm;
-
-Example:
-
-rtc: rtc@10011000 {
- compatible = "mediatek,mt2712-rtc";
- reg = <0 0x10011000 0 0x1000>;
- interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_LOW>;
-};
diff --git a/Documentation/devicetree/bindings/rtc/rtc-mt7622.txt b/Documentation/devicetree/bindings/rtc/rtc-mt7622.txt
deleted file mode 100644
index 09fe8f51476f..000000000000
--- a/Documentation/devicetree/bindings/rtc/rtc-mt7622.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-Device-Tree bindings for MediaTek SoC based RTC
-
-Required properties:
-- compatible : Should be
- "mediatek,mt7622-rtc", "mediatek,soc-rtc" : for MT7622 SoC
-- reg : Specifies base physical address and size of the registers;
-- interrupts : Should contain the interrupt for RTC alarm;
-- clocks : Specifies list of clock specifiers, corresponding to
- entries in clock-names property;
-- clock-names : Should contain "rtc" entries
-
-Example:
-
-rtc: rtc@10212800 {
- compatible = "mediatek,mt7622-rtc",
- "mediatek,soc-rtc";
- reg = <0 0x10212800 0 0x200>;
- interrupts = <GIC_SPI 129 IRQ_TYPE_LEVEL_LOW>;
- clocks = <&topckgen CLK_TOP_RTC>;
- clock-names = "rtc";
-};
diff --git a/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
index d1f5eb996dba..01cc90fee81e 100644
--- a/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
@@ -18,7 +18,13 @@ allOf:
properties:
compatible:
- const: xlnx,zynqmp-rtc
+ oneOf:
+ - const: xlnx,zynqmp-rtc
+ - items:
+ - enum:
+ - xlnx,versal-rtc
+ - xlnx,versal-net-rtc
+ - const: xlnx,zynqmp-rtc
reg:
maxItems: 1
@@ -48,6 +54,9 @@ properties:
default: 0x198233
deprecated: true
+ power-domains:
+ maxItems: 1
+
required:
- compatible
- reg
diff --git a/MAINTAINERS b/MAINTAINERS
index 97ec8ecf33bb..de6a64b248ae 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2377,8 +2377,8 @@ M: Sean Wang <sean.wang@mediatek.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: linux-mediatek@lists.infradead.org (moderated for non-subscribers)
S: Maintained
-F: Documentation/devicetree/bindings/rtc/rtc-mt2712.txt
-F: Documentation/devicetree/bindings/rtc/rtc-mt7622.txt
+F: Documentation/devicetree/bindings/rtc/mediatek,mt2712-rtc.yaml
+F: Documentation/devicetree/bindings/rtc/mediatek,mt7622-rtc.yaml
F: drivers/rtc/rtc-mt2712.c
F: drivers/rtc/rtc-mt6397.c
F: drivers/rtc/rtc-mt7622.c
@@ -2617,6 +2617,7 @@ F: drivers/pci/controller/dwc/pcie-qcom.c
F: drivers/phy/qualcomm/
F: drivers/power/*/msm*
F: drivers/reset/reset-qcom-*
+F: drivers/rtc/rtc-pm8xxx.c
F: drivers/spi/spi-geni-qcom.c
F: drivers/spi/spi-qcom-qspi.c
F: drivers/spi/spi-qup.c
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index e37a4341f442..c63e32d012f2 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1858,7 +1858,8 @@ config RTC_DRV_MT2712
config RTC_DRV_MT6397
tristate "MediaTek PMIC based RTC"
- depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
+ depends on MFD_MT6397 || COMPILE_TEST
+ select IRQ_DOMAIN
help
This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
MT6397 PMIC. You should enable MT6397 PMIC MFD before select
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 921ee1827974..e31fa0ad127e 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -21,7 +21,6 @@
#include "rtc-core.h"
static DEFINE_IDA(rtc_ida);
-struct class *rtc_class;
static void rtc_device_release(struct device *dev)
{
@@ -199,6 +198,11 @@ static SIMPLE_DEV_PM_OPS(rtc_class_dev_pm_ops, rtc_suspend, rtc_resume);
#define RTC_CLASS_DEV_PM_OPS NULL
#endif
+const struct class rtc_class = {
+ .name = "rtc",
+ .pm = RTC_CLASS_DEV_PM_OPS,
+};
+
/* Ensure the caller will set the id before releasing the device */
static struct rtc_device *rtc_allocate_device(void)
{
@@ -220,7 +224,7 @@ static struct rtc_device *rtc_allocate_device(void)
rtc->irq_freq = 1;
rtc->max_user_freq = 64;
- rtc->dev.class = rtc_class;
+ rtc->dev.class = &rtc_class;
rtc->dev.groups = rtc_get_dev_attribute_groups();
rtc->dev.release = rtc_device_release;
@@ -475,13 +479,14 @@ EXPORT_SYMBOL_GPL(devm_rtc_device_register);
static int __init rtc_init(void)
{
- rtc_class = class_create("rtc");
- if (IS_ERR(rtc_class)) {
- pr_err("couldn't create class\n");
- return PTR_ERR(rtc_class);
- }
- rtc_class->pm = RTC_CLASS_DEV_PM_OPS;
+ int err;
+
+ err = class_register(&rtc_class);
+ if (err)
+ return err;
+
rtc_dev_init();
+
return 0;
}
subsys_initcall(rtc_init);
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 1b63111cdda2..5faafb4aa55c 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -696,7 +696,7 @@ struct rtc_device *rtc_class_open(const char *name)
struct device *dev;
struct rtc_device *rtc = NULL;
- dev = class_find_device_by_name(rtc_class, name);
+ dev = class_find_device_by_name(&rtc_class, name);
if (dev)
rtc = to_rtc_device(dev);
diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 1109cad83838..8b087d9556be 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -22,26 +22,24 @@
#include <linux/io.h>
#include <linux/module.h>
-enum ds1511reg {
- DS1511_SEC = 0x0,
- DS1511_MIN = 0x1,
- DS1511_HOUR = 0x2,
- DS1511_DOW = 0x3,
- DS1511_DOM = 0x4,
- DS1511_MONTH = 0x5,
- DS1511_YEAR = 0x6,
- DS1511_CENTURY = 0x7,
- DS1511_AM1_SEC = 0x8,
- DS1511_AM2_MIN = 0x9,
- DS1511_AM3_HOUR = 0xa,
- DS1511_AM4_DATE = 0xb,
- DS1511_WD_MSEC = 0xc,
- DS1511_WD_SEC = 0xd,
- DS1511_CONTROL_A = 0xe,
- DS1511_CONTROL_B = 0xf,
- DS1511_RAMADDR_LSB = 0x10,
- DS1511_RAMDATA = 0x13
-};
+#define DS1511_SEC 0x0
+#define DS1511_MIN 0x1
+#define DS1511_HOUR 0x2
+#define DS1511_DOW 0x3
+#define DS1511_DOM 0x4
+#define DS1511_MONTH 0x5
+#define DS1511_YEAR 0x6
+#define DS1511_CENTURY 0x7
+#define DS1511_AM1_SEC 0x8
+#define DS1511_AM2_MIN 0x9
+#define DS1511_AM3_HOUR 0xa
+#define DS1511_AM4_DATE 0xb
+#define DS1511_WD_MSEC 0xc
+#define DS1511_WD_SEC 0xd
+#define DS1511_CONTROL_A 0xe
+#define DS1511_CONTROL_B 0xf
+#define DS1511_RAMADDR_LSB 0x10
+#define DS1511_RAMDATA 0x13
#define DS1511_BLF1 0x80
#define DS1511_BLF2 0x40
@@ -61,35 +59,10 @@ enum ds1511reg {
#define DS1511_WDS 0x01
#define DS1511_RAM_MAX 0x100
-#define RTC_CMD DS1511_CONTROL_B
-#define RTC_CMD1 DS1511_CONTROL_A
-
-#define RTC_ALARM_SEC DS1511_AM1_SEC
-#define RTC_ALARM_MIN DS1511_AM2_MIN
-#define RTC_ALARM_HOUR DS1511_AM3_HOUR
-#define RTC_ALARM_DATE DS1511_AM4_DATE
-
-#define RTC_SEC DS1511_SEC
-#define RTC_MIN DS1511_MIN
-#define RTC_HOUR DS1511_HOUR
-#define RTC_DOW DS1511_DOW
-#define RTC_DOM DS1511_DOM
-#define RTC_MON DS1511_MONTH
-#define RTC_YEAR DS1511_YEAR
-#define RTC_CENTURY DS1511_CENTURY
-
-#define RTC_TIE DS1511_TIE
-#define RTC_TE DS1511_TE
-
-struct rtc_plat_data {
+struct ds1511_data {
struct rtc_device *rtc;
void __iomem *ioaddr; /* virtual base address */
int irq;
- unsigned int irqen;
- int alrm_sec;
- int alrm_min;
- int alrm_hour;
- int alrm_mday;
spinlock_t lock;
};
@@ -98,95 +71,33 @@ static DEFINE_SPINLOCK(ds1511_lock);
static __iomem char *ds1511_base;
static u32 reg_spacing = 1;
-static noinline void
-rtc_write(uint8_t val, uint32_t reg)
+static void rtc_write(uint8_t val, uint32_t reg)
{
writeb(val, ds1511_base + (reg * reg_spacing));
}
-static noinline uint8_t
-rtc_read(enum ds1511reg reg)
+static uint8_t rtc_read(uint32_t reg)
{
return readb(ds1511_base + (reg * reg_spacing));
}
-static inline void
-rtc_disable_update(void)
+static void rtc_disable_update(void)
{
- rtc_write((rtc_read(RTC_CMD) & ~RTC_TE), RTC_CMD);
+ rtc_write((rtc_read(DS1511_CONTROL_B) & ~DS1511_TE), DS1511_CONTROL_B);
}
-static void
-rtc_enable_update(void)
+static void rtc_enable_update(void)
{
- rtc_write((rtc_read(RTC_CMD) | RTC_TE), RTC_CMD);
-}
-
-/*
- * #define DS1511_WDOG_RESET_SUPPORT
- *
- * Uncomment this if you want to use these routines in
- * some platform code.
- */
-#ifdef DS1511_WDOG_RESET_SUPPORT
-/*
- * just enough code to set the watchdog timer so that it
- * will reboot the system
- */
-void
-ds1511_wdog_set(unsigned long deciseconds)
-{
- /*
- * the wdog timer can take 99.99 seconds
- */
- deciseconds %= 10000;
- /*
- * set the wdog values in the wdog registers
- */
- rtc_write(bin2bcd(deciseconds % 100), DS1511_WD_MSEC);
- rtc_write(bin2bcd(deciseconds / 100), DS1511_WD_SEC);
- /*
- * set wdog enable and wdog 'steering' bit to issue a reset
- */
- rtc_write(rtc_read(RTC_CMD) | DS1511_WDE | DS1511_WDS, RTC_CMD);
-}
-
-void
-ds1511_wdog_disable(void)
-{
- /*
- * clear wdog enable and wdog 'steering' bits
- */
- rtc_write(rtc_read(RTC_CMD) & ~(DS1511_WDE | DS1511_WDS), RTC_CMD);
- /*
- * clear the wdog counter
- */
- rtc_write(0, DS1511_WD_MSEC);
- rtc_write(0, DS1511_WD_SEC);
+ rtc_write((rtc_read(DS1511_CONTROL_B) | DS1511_TE), DS1511_CONTROL_B);
}
-#endif
-/*
- * set the rtc chip's idea of the time.
- * stupidly, some callers call with year unmolested;
- * and some call with year = year - 1900. thanks.
- */
static int ds1511_rtc_set_time(struct device *dev, struct rtc_time *rtc_tm)
{
u8 mon, day, dow, hrs, min, sec, yrs, cen;
unsigned long flags;
- /*
- * won't have to change this for a while
- */
- if (rtc_tm->tm_year < 1900)
- rtc_tm->tm_year += 1900;
-
- if (rtc_tm->tm_year < 1970)
- return -EINVAL;
-
yrs = rtc_tm->tm_year % 100;
- cen = rtc_tm->tm_year / 100;
+ cen = 19 + rtc_tm->tm_year / 100;
mon = rtc_tm->tm_mon + 1; /* tm_mon starts at zero */
day = rtc_tm->tm_mday;
dow = rtc_tm->tm_wday & 0x7; /* automatic BCD */
@@ -194,15 +105,6 @@ static int ds1511_rtc_set_time(struct device *dev, struct rtc_time *rtc_tm)
min = rtc_tm->tm_min;
sec = rtc_tm->tm_sec;
- if ((mon > 12) || (day == 0))
- return -EINVAL;
-
- if (day > rtc_month_days(rtc_tm->tm_mon, rtc_tm->tm_year))
- return -EINVAL;
-
- if ((hrs >= 24) || (min >= 60) || (sec >= 60))
- return -EINVAL;
-
/*
* each register is a different number of valid bits
*/
@@ -216,14 +118,14 @@ static int ds1511_rtc_set_time(struct device *dev, struct rtc_time *rtc_tm)
spin_lock_irqsave(&ds1511_lock, flags);
rtc_disable_update();
- rtc_write(cen, RTC_CENTURY);
- rtc_write(yrs, RTC_YEAR);
- rtc_write((rtc_read(RTC_MON) & 0xe0) | mon, RTC_MON);
- rtc_write(day, RTC_DOM);
- rtc_write(hrs, RTC_HOUR);
- rtc_write(min, RTC_MIN);
- rtc_write(sec, RTC_SEC);
- rtc_write(dow, RTC_DOW);
+ rtc_write(cen, DS1511_CENTURY);
+ rtc_write(yrs, DS1511_YEAR);
+ rtc_write((rtc_read(DS1511_MONTH) & 0xe0) | mon, DS1511_MONTH);
+ rtc_write(day, DS1511_DOM);
+ rtc_write(hrs, DS1511_HOUR);
+ rtc_write(min, DS1511_MIN);
+ rtc_write(sec, DS1511_SEC);
+ rtc_write(dow, DS1511_DOW);
rtc_enable_update();
spin_unlock_irqrestore(&ds1511_lock, flags);
@@ -238,14 +140,14 @@ static int ds1511_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
spin_lock_irqsave(&ds1511_lock, flags);
rtc_disable_update();
- rtc_tm->tm_sec = rtc_read(RTC_SEC) & 0x7f;
- rtc_tm->tm_min = rtc_read(RTC_MIN) & 0x7f;
- rtc_tm->tm_hour = rtc_read(RTC_HOUR) & 0x3f;
- rtc_tm->tm_mday = rtc_read(RTC_DOM) & 0x3f;
- rtc_tm->tm_wday = rtc_read(RTC_DOW) & 0x7;
- rtc_tm->tm_mon = rtc_read(RTC_MON) & 0x1f;
- rtc_tm->tm_year = rtc_read(RTC_YEAR) & 0x7f;
- century = rtc_read(RTC_CENTURY);
+ rtc_tm->tm_sec = rtc_read(DS1511_SEC) & 0x7f;
+ rtc_tm->tm_min = rtc_read(DS1511_MIN) & 0x7f;
+ rtc_tm->tm_hour = rtc_read(DS1511_HOUR) & 0x3f;
+ rtc_tm->tm_mday = rtc_read(DS1511_DOM) & 0x3f;
+ rtc_tm->tm_wday = rtc_read(DS1511_DOW) & 0x7;
+ rtc_tm->tm_mon = rtc_read(DS1511_MONTH) & 0x1f;
+ rtc_tm->tm_year = rtc_read(DS1511_YEAR) & 0x7f;
+ century = rtc_read(DS1511_CENTURY);
rtc_enable_update();
spin_unlock_irqrestore(&ds1511_lock, flags);
@@ -271,106 +173,67 @@ static int ds1511_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
return 0;
}
-/*
- * write the alarm register settings
- *
- * we only have the use to interrupt every second, otherwise
- * known as the update interrupt, or the interrupt if the whole
- * date/hours/mins/secs matches. the ds1511 has many more
- * permutations, but the kernel doesn't.
- */
-static void
-ds1511_rtc_update_alarm(struct rtc_plat_data *pdata)
+static void ds1511_rtc_alarm_enable(unsigned int enabled)
{
- unsigned long flags;
-
- spin_lock_irqsave(&pdata->lock, flags);
- rtc_write(pdata->alrm_mday < 0 || (pdata->irqen & RTC_UF) ?
- 0x80 : bin2bcd(pdata->alrm_mday) & 0x3f,
- RTC_ALARM_DATE);
- rtc_write(pdata->alrm_hour < 0 || (pdata->irqen & RTC_UF) ?
- 0x80 : bin2bcd(pdata->alrm_hour) & 0x3f,
- RTC_ALARM_HOUR);
- rtc_write(pdata->alrm_min < 0 || (pdata->irqen & RTC_UF) ?
- 0x80 : bin2bcd(pdata->alrm_min) & 0x7f,
- RTC_ALARM_MIN);
- rtc_write(pdata->alrm_sec < 0 || (pdata->irqen & RTC_UF) ?
- 0x80 : bin2bcd(pdata->alrm_sec) & 0x7f,
- RTC_ALARM_SEC);
- rtc_write(rtc_read(RTC_CMD) | (pdata->irqen ? RTC_TIE : 0), RTC_CMD);
- rtc_read(RTC_CMD1); /* clear interrupts */
- spin_unlock_irqrestore(&pdata->lock, flags);
+ rtc_write(rtc_read(DS1511_CONTROL_B) | (enabled ? DS1511_TIE : 0), DS1511_CONTROL_B);
}
-static int
-ds1511_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+static int ds1511_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
- struct rtc_plat_data *pdata = dev_get_drvdata(dev);
+ struct ds1511_data *ds1511 = dev_get_drvdata(dev);
+ unsigned long flags;
- if (pdata->irq <= 0)
- return -EINVAL;
+ spin_lock_irqsave(&ds1511->lock, flags);
+ rtc_write(bin2bcd(alrm->time.tm_mday) & 0x3f, DS1511_AM4_DATE);
+ rtc_write(bin2bcd(alrm->time.tm_hour) & 0x3f, DS1511_AM3_HOUR);
+ rtc_write(bin2bcd(alrm->time.tm_min) & 0x7f, DS1511_AM2_MIN);
+ rtc_write(bin2bcd(alrm->time.tm_sec) & 0x7f, DS1511_AM1_SEC);
+ ds1511_rtc_alarm_enable(alrm->enabled);
- pdata->alrm_mday = alrm->time.tm_mday;
- pdata->alrm_hour = alrm->time.tm_hour;
- pdata->alrm_min = alrm->time.tm_min;
- pdata->alrm_sec = alrm->time.tm_sec;
- if (alrm->enabled)
- pdata->irqen |= RTC_AF;
+ rtc_read(DS1511_CONTROL_A); /* clear interrupts */
+ spin_unlock_irqrestore(&ds1511->lock, flags);
- ds1511_rtc_update_alarm(pdata);
return 0;
}
-static int
-ds1511_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+static int ds1511_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
- struct rtc_plat_data *pdata = dev_get_drvdata(dev);
-
- if (pdata->irq <= 0)
- return -EINVAL;
+ alrm->time.tm_mday = bcd2bin(rtc_read(DS1511_AM4_DATE) & 0x3f);
+ alrm->time.tm_hour = bcd2bin(rtc_read(DS1511_AM3_HOUR) & 0x3f);
+ alrm->time.tm_min = bcd2bin(rtc_read(DS1511_AM2_MIN) & 0x7f);
+ alrm->time.tm_sec = bcd2bin(rtc_read(DS1511_AM1_SEC) & 0x7f);
+ alrm->enabled = !!(rtc_read(DS1511_CONTROL_B) & DS1511_TIE);
- alrm->time.tm_mday = pdata->alrm_mday < 0 ? 0 : pdata->alrm_mday;
- alrm->time.tm_hour = pdata->alrm_hour < 0 ? 0 : pdata->alrm_hour;
- alrm->time.tm_min = pdata->alrm_min < 0 ? 0 : pdata->alrm_min;
- alrm->time.tm_sec = pdata->alrm_sec < 0 ? 0 : pdata->alrm_sec;
- alrm->enabled = (pdata->irqen & RTC_AF) ? 1 : 0;
return 0;
}
-static irqreturn_t
-ds1511_interrupt(int irq, void *dev_id)
+static irqreturn_t ds1511_interrupt(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
- struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
+ struct ds1511_data *ds1511 = platform_get_drvdata(pdev);
unsigned long events = 0;
- spin_lock(&pdata->lock);
+ spin_lock(&ds1511->lock);
/*
* read and clear interrupt
*/
- if (rtc_read(RTC_CMD1) & DS1511_IRQF) {
- events = RTC_IRQF;
- if (rtc_read(RTC_ALARM_SEC) & 0x80)
- events |= RTC_UF;
- else
- events |= RTC_AF;
- rtc_update_irq(pdata->rtc, 1, events);
+ if (rtc_read(DS1511_CONTROL_A) & DS1511_IRQF) {
+ events = RTC_IRQF | RTC_AF;
+ rtc_update_irq(ds1511->rtc, 1, events);
}
- spin_unlock(&pdata->lock);
+ spin_unlock(&ds1511->lock);
return events ? IRQ_HANDLED : IRQ_NONE;
}
static int ds1511_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
{
- struct rtc_plat_data *pdata = dev_get_drvdata(dev);
-
- if (pdata->irq <= 0)
- return -EINVAL;
- if (enabled)
- pdata->irqen |= RTC_AF;
- else
- pdata->irqen &= ~RTC_AF;
- ds1511_rtc_update_alarm(pdata);
+ struct ds1511_data *ds1511 = dev_get_drvdata(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ds1511->lock, flags);
+ ds1511_rtc_alarm_enable(enabled);
+ spin_unlock_irqrestore(&ds1511->lock, flags);
+
return 0;
}
@@ -408,7 +271,7 @@ static int ds1511_nvram_write(void *priv, unsigned int pos, void *buf,
static int ds1511_rtc_probe(struct platform_device *pdev)
{
- struct rtc_plat_data *pdata;
+ struct ds1511_data *ds1511;
int ret = 0;
struct nvmem_config ds1511_nvmem_cfg = {
.name = "ds1511_nvram",
@@ -420,21 +283,21 @@ static int ds1511_rtc_probe(struct platform_device *pdev)
.priv = &pdev->dev,
};
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
+ ds1511 = devm_kzalloc(&pdev->dev, sizeof(*ds1511), GFP_KERNEL);
+ if (!ds1511)
return -ENOMEM;
ds1511_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(ds1511_base))
return PTR_ERR(ds1511_base);
- pdata->ioaddr = ds1511_base;
- pdata->irq = platform_get_irq(pdev, 0);
+ ds1511->ioaddr = ds1511_base;
+ ds1511->irq = platform_get_irq(pdev, 0);
/*
* turn on the clock and the crystal, etc.
*/
- rtc_write(DS1511_BME, RTC_CMD);
- rtc_write(0, RTC_CMD1);
+ rtc_write(DS1511_BME, DS1511_CONTROL_B);
+ rtc_write(0, DS1511_CONTROL_A);
/*
* clear the wdog counter
*/
@@ -448,38 +311,43 @@ static int ds1511_rtc_probe(struct platform_device *pdev)
/*
* check for a dying bat-tree
*/
- if (rtc_read(RTC_CMD1) & DS1511_BLF1)
+ if (rtc_read(DS1511_CONTROL_A) & DS1511_BLF1)
dev_warn(&pdev->dev, "voltage-low detected.\n");
- spin_lock_init(&pdata->lock);
- platform_set_drvdata(pdev, pdata);
-
- pdata->rtc = devm_rtc_allocate_device(&pdev->dev);
- if (IS_ERR(pdata->rtc))
- return PTR_ERR(pdata->rtc);
-
- pdata->rtc->ops = &ds1511_rtc_ops;
+ spin_lock_init(&ds1511->lock);
+ platform_set_drvdata(pdev, ds1511);
- ret = devm_rtc_register_device(pdata->rtc);
- if (ret)
- return ret;
+ ds1511->rtc = devm_rtc_allocate_device(&pdev->dev);
+ if (IS_ERR(ds1511->rtc))
+ return PTR_ERR(ds1511->rtc);
- devm_rtc_nvmem_register(pdata->rtc, &ds1511_nvmem_cfg);
+ ds1511->rtc->ops = &ds1511_rtc_ops;
+ ds1511->rtc->range_max = RTC_TIMESTAMP_END_2099;
+ ds1511->rtc->alarm_offset_max = 28 * 24 * 60 * 60 - 1;
/*
* if the platform has an interrupt in mind for this device,
* then by all means, set it
*/
- if (pdata->irq > 0) {
- rtc_read(RTC_CMD1);
- if (devm_request_irq(&pdev->dev, pdata->irq, ds1511_interrupt,
+ if (ds1511->irq > 0) {
+ rtc_read(DS1511_CONTROL_A);
+ if (devm_request_irq(&pdev->dev, ds1511->irq, ds1511_interrupt,
IRQF_SHARED, pdev->name, pdev) < 0) {
dev_warn(&pdev->dev, "interrupt not available.\n");
- pdata->irq = 0;
+ ds1511->irq = 0;
}
}
+ if (ds1511->irq == 0)
+ clear_bit(RTC_FEATURE_ALARM, ds1511->rtc->features);
+
+ ret = devm_rtc_register_device(ds1511->rtc);
+ if (ret)
+ return ret;
+
+ devm_rtc_nvmem_register(ds1511->rtc, &ds1511_nvmem_cfg);
+
return 0;
}
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 866489ad56d6..0013bff0447d 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -909,10 +909,7 @@ static int m41t80_probe(struct i2c_client *client)
if (IS_ERR(m41t80_data->rtc))
return PTR_ERR(m41t80_data->rtc);
-#ifdef CONFIG_OF
- wakeup_source = of_property_read_bool(client->dev.of_node,
- "wakeup-source");
-#endif
+ wakeup_source = device_property_read_bool(&client->dev, "wakeup-source");
if (client->irq > 0) {
unsigned long irqflags = IRQF_TRIGGER_LOW;
diff --git a/drivers/rtc/rtc-max31335.c b/drivers/rtc/rtc-max31335.c
index 402fda8fd548..a2441e5c2c74 100644
--- a/drivers/rtc/rtc-max31335.c
+++ b/drivers/rtc/rtc-max31335.c
@@ -204,7 +204,7 @@ static bool max31335_volatile_reg(struct device *dev, unsigned int reg)
return true;
/* interrupt status register */
- if (reg == MAX31335_INT_EN1_A1IE)
+ if (reg == MAX31335_STATUS1)
return true;
/* temperature registers */
diff --git a/drivers/rtc/rtc-nct3018y.c b/drivers/rtc/rtc-nct3018y.c
index f488a189a465..076d8b99f913 100644
--- a/drivers/rtc/rtc-nct3018y.c
+++ b/drivers/rtc/rtc-nct3018y.c
@@ -102,6 +102,8 @@ static int nct3018y_get_alarm_mode(struct i2c_client *client, unsigned char *ala
if (flags < 0)
return flags;
*alarm_enable = flags & NCT3018Y_BIT_AIE;
+ dev_dbg(&client->dev, "%s:alarm_enable:%x\n", __func__, *alarm_enable);
+
}
if (alarm_flag) {
@@ -110,11 +112,9 @@ static int nct3018y_get_alarm_mode(struct i2c_client *client, unsigned char *ala
if (flags < 0)
return flags;
*alarm_flag = flags & NCT3018Y_BIT_AF;
+ dev_dbg(&client->dev, "%s:alarm_flag:%x\n", __func__, *alarm_flag);
}
- dev_dbg(&client->dev, "%s:alarm_enable:%x alarm_flag:%x\n",
- __func__, *alarm_enable, *alarm_flag);
-
return 0;
}
diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c
index d1efde3e7a80..98b77f790b0c 100644
--- a/drivers/rtc/rtc-pcf8523.c
+++ b/drivers/rtc/rtc-pcf8523.c
@@ -370,6 +370,30 @@ static int pcf8523_rtc_set_offset(struct device *dev, long offset)
return regmap_write(pcf8523->regmap, PCF8523_REG_OFFSET, value);
}
+#ifdef CONFIG_PM_SLEEP
+static int pcf8523_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ if (client->irq > 0 && device_may_wakeup(dev))
+ enable_irq_wake(client->irq);
+
+ return 0;
+}
+
+static int pcf8523_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+
+ if (client->irq > 0 && device_may_wakeup(dev))
+ disable_irq_wake(client->irq);
+
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(pcf8523_pm, pcf8523_suspend, pcf8523_resume);
+
static const struct rtc_class_ops pcf8523_rtc_ops = {
.read_time = pcf8523_rtc_read_time,
.set_time = pcf8523_rtc_set_time,
@@ -487,6 +511,7 @@ static struct i2c_driver pcf8523_driver = {
.driver = {
.name = "rtc-pcf8523",
.of_match_table = pcf8523_of_match,
+ .pm = &pcf8523_pm,
},
.probe = pcf8523_probe,
.id_table = pcf8523_id,
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 5f8e438a0312..3f4d315aaec9 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -42,7 +42,7 @@ static inline time64_t rtc_tm_sub(struct rtc_time *lhs, struct rtc_time *rhs)
#include <linux/timerqueue.h>
#include <linux/workqueue.h>
-extern struct class *rtc_class;
+extern const struct class rtc_class;
/*
* For these RTC methods the device parameter is the physical device
diff --git a/kernel/power/suspend_test.c b/kernel/power/suspend_test.c
index b663a97f5867..d4856ec61570 100644
--- a/kernel/power/suspend_test.c
+++ b/kernel/power/suspend_test.c
@@ -201,7 +201,7 @@ static int __init test_suspend(void)
}
/* RTCs have initialized by now too ... can we use one? */
- dev = class_find_device(rtc_class, NULL, NULL, has_wakealarm);
+ dev = class_find_device(&rtc_class, NULL, NULL, has_wakealarm);
if (dev) {
rtc = rtc_class_open(dev_name(dev));
put_device(dev);
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index 4657cb8e8b1f..5abfa4390673 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -134,7 +134,7 @@ static struct class_interface alarmtimer_rtc_interface = {
static int alarmtimer_rtc_interface_setup(void)
{
- alarmtimer_rtc_interface.class = rtc_class;
+ alarmtimer_rtc_interface.class = &rtc_class;
return class_interface_register(&alarmtimer_rtc_interface);
}
static void alarmtimer_rtc_interface_remove(void)
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-22 12:34:12 +0000