Merge tag 'rtc-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "New drivers:
   - Amlogic A4 and A5 RTC
   - Marvell 88PM886 PMIC RTC
   - Renesas RTCA-3 for Renesas RZ/G3S

  Driver updates:
   - ab-eoz9: fix temperature and alarm support
   - cmos: improve locking behaviour
   - isl12022: add alarm support
   - m48t59: improve epoch handling
   - mt6359: add range
   - rzn1: fix BCD conversions and simplify driver"

* tag 'rtc-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (38 commits)
  rtc: ab-eoz9: don't fail temperature reads on undervoltage notification
  rtc: rzn1: reduce register access
  rtc: rzn1: drop superfluous wday calculation
  m68k: mvme147, mvme16x: Adopt rtc-m48t59 platform driver
  rtc: brcmstb-waketimer: don't include 'pm_wakeup.h' directly
  rtc: m48t59: Use platform_data struct for year offset value
  rtc: ab-eoz9: fix abeoz9_rtc_read_alarm
  rtc: rv3028: fix RV3028_TS_COUNT type
  rtc: rzn1: update Michel's email
  rtc: rzn1: fix BCD to rtc_time conversion errors
  rtc: amlogic-a4: fix compile error
  rtc: amlogic-a4: drop error messages
  MAINTAINERS: Add an entry for Amlogic RTC driver
  rtc: support for the Amlogic on-chip RTC
  dt-bindings: rtc: Add Amlogic A4 and A5 RTC
  rtc: add driver for Marvell 88PM886 PMIC RTC
  rtc: check if __rtc_read_time was successful in rtc_timer_do_work()
  rtc: pcf8563: Switch to regmap
  rtc: pcf8563: Sort headers alphabetically
  rtc: abx80x: Fix WDT bit position of the status register
  ...

63 files changed, 1980 insertions, 329 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 66eb1122248b..a60bcc791a48 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -182,6 +182,16 @@ config RTC_DRV_88PM80X
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-88pm80x.
 
+config RTC_DRV_88PM886
+	tristate "Marvell 88PM886 RTC driver"
+	depends on MFD_88PM886_PMIC
+	help
+	  If you say yes here you will get support for the RTC function in the
+	  Marvell 88PM886 chip.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-88pm886.
+
 config RTC_DRV_ABB5ZES3
 	select REGMAP_I2C
 	tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
@@ -496,6 +506,7 @@ config RTC_DRV_PCF85363
 
 config RTC_DRV_PCF8563
 	tristate "Philips PCF8563/Epson RTC8564"
+	select REGMAP_I2C
 	help
 	  If you say yes here you get support for the
 	  Philips PCF8563 RTC chip. The Epson RTC8564
@@ -2005,6 +2016,16 @@ config RTC_DRV_MA35D1
 	   This driver can also be built as a module, if so, the module
 	   will be called "rtc-ma35d1".
 
+config RTC_DRV_RENESAS_RTCA3
+	tristate "Renesas RTCA-3 RTC"
+	depends on ARCH_RENESAS
+	help
+	  If you say yes here you get support for the Renesas RTCA-3 RTC
+	  available on the Renesas RZ/G3S SoC.
+
+	  This driver can also be built as a module, if so, the module
+	  will be called "rtc-rtca3".
+
 comment "HID Sensor RTC drivers"
 
 config RTC_DRV_HID_SENSOR_TIME
@@ -2070,4 +2091,16 @@ config RTC_DRV_SSD202D
 	  This driver can also be built as a module, if so, the module
 	  will be called "rtc-ssd20xd".
 
+config RTC_DRV_AMLOGIC_A4
+	tristate "Amlogic RTC"
+	depends on ARCH_MESON || COMPILE_TEST
+	select REGMAP_MMIO
+	default y
+	help
+	  If you say yes here you get support for the RTC block on the
+	  Amlogic A113L2(A4) and A113X2(A5) SoCs.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called "rtc-amlogic-a4".
+
 endif # RTC_CLASS
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index f62340ecc534..489b4ab07068 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -21,11 +21,13 @@ obj-$(CONFIG_RTC_LIB_KUNIT_TEST)	+= lib_test.o
 
 obj-$(CONFIG_RTC_DRV_88PM80X)	+= rtc-88pm80x.o
 obj-$(CONFIG_RTC_DRV_88PM860X)	+= rtc-88pm860x.o
+obj-$(CONFIG_RTC_DRV_88PM886)	+= rtc-88pm886.o
 obj-$(CONFIG_RTC_DRV_AB8500)	+= rtc-ab8500.o
 obj-$(CONFIG_RTC_DRV_ABB5ZES3)	+= rtc-ab-b5ze-s3.o
 obj-$(CONFIG_RTC_DRV_ABEOZ9)	+= rtc-ab-eoz9.o
 obj-$(CONFIG_RTC_DRV_ABX80X)	+= rtc-abx80x.o
 obj-$(CONFIG_RTC_DRV_AC100)	+= rtc-ac100.o
+obj-$(CONFIG_RTC_DRV_AMLOGIC_A4)	+= rtc-amlogic-a4.o
 obj-$(CONFIG_RTC_DRV_ARMADA38X)	+= rtc-armada38x.o
 obj-$(CONFIG_RTC_DRV_AS3722)	+= rtc-as3722.o
 obj-$(CONFIG_RTC_DRV_ASM9260)	+= rtc-asm9260.o
@@ -158,13 +160,14 @@ obj-$(CONFIG_RTC_DRV_RX8025)	+= rtc-rx8025.o
 obj-$(CONFIG_RTC_DRV_RX8111)	+= rtc-rx8111.o
 obj-$(CONFIG_RTC_DRV_RX8581)	+= rtc-rx8581.o
 obj-$(CONFIG_RTC_DRV_RZN1)	+= rtc-rzn1.o
+obj-$(CONFIG_RTC_DRV_RENESAS_RTCA3)	+= rtc-renesas-rtca3.o
 obj-$(CONFIG_RTC_DRV_S35390A)	+= rtc-s35390a.o
 obj-$(CONFIG_RTC_DRV_S3C)	+= rtc-s3c.o
 obj-$(CONFIG_RTC_DRV_S5M)	+= rtc-s5m.o
 obj-$(CONFIG_RTC_DRV_SA1100)	+= rtc-sa1100.o
 obj-$(CONFIG_RTC_DRV_SC27XX)	+= rtc-sc27xx.o
 obj-$(CONFIG_RTC_DRV_SD2405AL)	+= rtc-sd2405al.o
-obj-$(CONFIG_RTC_DRV_SD3078)   += rtc-sd3078.o
+obj-$(CONFIG_RTC_DRV_SD3078)	+= rtc-sd3078.o
 obj-$(CONFIG_RTC_DRV_SH)	+= rtc-sh.o
 obj-$(CONFIG_RTC_DRV_SNVS)	+= rtc-snvs.o
 obj-$(CONFIG_RTC_DRV_SPEAR)	+= rtc-spear.o
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index cca650b2e0b9..aaf76406cd7d 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -904,13 +904,18 @@ void rtc_timer_do_work(struct work_struct *work)
 	struct timerqueue_node *next;
 	ktime_t now;
 	struct rtc_time tm;
+	int err;
 
 	struct rtc_device *rtc =
 		container_of(work, struct rtc_device, irqwork);
 
 	mutex_lock(&rtc->ops_lock);
 again:
-	__rtc_read_time(rtc, &tm);
+	err = __rtc_read_time(rtc, &tm);
+	if (err) {
+		mutex_unlock(&rtc->ops_lock);
+		return;
+	}
 	now = rtc_tm_to_ktime(tm);
 	while ((next = timerqueue_getnext(&rtc->timerqueue))) {
 		if (next->expires > now)
diff --git a/drivers/rtc/rtc-88pm80x.c b/drivers/rtc/rtc-88pm80x.c
index f40cc06b0979..5c39cf252392 100644
--- a/drivers/rtc/rtc-88pm80x.c
+++ b/drivers/rtc/rtc-88pm80x.c
@@ -329,7 +329,7 @@ static struct platform_driver pm80x_rtc_driver = {
 		   .pm = &pm80x_rtc_pm_ops,
 		   },
 	.probe = pm80x_rtc_probe,
-	.remove_new = pm80x_rtc_remove,
+	.remove = pm80x_rtc_remove,
 };
 
 module_platform_driver(pm80x_rtc_driver);
diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c
index 0f124ed5b3e5..814230d61842 100644
--- a/drivers/rtc/rtc-88pm860x.c
+++ b/drivers/rtc/rtc-88pm860x.c
@@ -371,7 +371,7 @@ static struct platform_driver pm860x_rtc_driver = {
 		.pm	= &pm860x_rtc_pm_ops,
 	},
 	.probe		= pm860x_rtc_probe,
-	.remove_new	= pm860x_rtc_remove,
+	.remove		= pm860x_rtc_remove,
 };
 
 module_platform_driver(pm860x_rtc_driver);
diff --git a/drivers/rtc/rtc-88pm886.c b/drivers/rtc/rtc-88pm886.c
new file mode 100644
index 000000000000..57e9b0a66eed
--- /dev/null
+++ b/drivers/rtc/rtc-88pm886.c
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/limits.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+
+#include <linux/mfd/88pm886.h>
+
+/*
+ * Time is calculated as the sum of a 32-bit read-only advancing counter and a
+ * writeable constant offset stored in the chip's spare registers.
+ */
+
+static int pm886_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	struct regmap *regmap = dev_get_drvdata(dev);
+	u32 time;
+	u32 buf;
+	int ret;
+
+	ret = regmap_bulk_read(regmap, PM886_REG_RTC_SPARE1, &buf, 4);
+	if (ret)
+		return ret;
+	time = buf;
+
+	ret = regmap_bulk_read(regmap, PM886_REG_RTC_CNT1, &buf, 4);
+	if (ret)
+		return ret;
+	time += buf;
+
+	rtc_time64_to_tm(time, tm);
+
+	return 0;
+}
+
+static int pm886_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	struct regmap *regmap = dev_get_drvdata(dev);
+	u32 buf;
+	int ret;
+
+	ret = regmap_bulk_read(regmap, PM886_REG_RTC_CNT1, &buf, 4);
+	if (ret)
+		return ret;
+
+	buf = rtc_tm_to_time64(tm) - buf;
+
+	return regmap_bulk_write(regmap, PM886_REG_RTC_SPARE1, &buf, 4);
+}
+
+static const struct rtc_class_ops pm886_rtc_ops = {
+	.read_time = pm886_rtc_read_time,
+	.set_time = pm886_rtc_set_time,
+};
+
+static int pm886_rtc_probe(struct platform_device *pdev)
+{
+	struct pm886_chip *chip = dev_get_drvdata(pdev->dev.parent);
+	struct device *dev = &pdev->dev;
+	struct rtc_device *rtc;
+	int ret;
+
+	platform_set_drvdata(pdev, chip->regmap);
+
+	rtc = devm_rtc_allocate_device(dev);
+	if (IS_ERR(rtc))
+		return dev_err_probe(dev, PTR_ERR(rtc),
+				"Failed to allocate RTC device\n");
+
+	rtc->ops = &pm886_rtc_ops;
+	rtc->range_max = U32_MAX;
+
+	ret = devm_rtc_register_device(rtc);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to register RTC device\n");
+
+	return 0;
+}
+
+static const struct platform_device_id pm886_rtc_id_table[] = {
+	{ "88pm886-rtc", },
+	{ }
+};
+MODULE_DEVICE_TABLE(platform, pm886_rtc_id_table);
+
+static struct platform_driver pm886_rtc_driver = {
+	.driver = {
+		.name = "88pm886-rtc",
+	},
+	.probe = pm886_rtc_probe,
+	.id_table = pm886_rtc_id_table,
+};
+module_platform_driver(pm886_rtc_driver);
+
+MODULE_DESCRIPTION("Marvell 88PM886 RTC driver");
+MODULE_AUTHOR("Karel Balej <balejk@matfyz.cz>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-ab-eoz9.c b/drivers/rtc/rtc-ab-eoz9.c
index 02f7d0711287..d2b60487d462 100644
--- a/drivers/rtc/rtc-ab-eoz9.c
+++ b/drivers/rtc/rtc-ab-eoz9.c
@@ -64,7 +64,7 @@
 #define ABEOZ9_BIT_ALARM_MIN		GENMASK(6, 0)
 #define ABEOZ9_REG_ALARM_HOURS		0x12
 #define ABEOZ9_BIT_ALARM_HOURS_PM	BIT(5)
-#define ABEOZ9_BIT_ALARM_HOURS		GENMASK(4, 0)
+#define ABEOZ9_BIT_ALARM_HOURS		GENMASK(5, 0)
 #define ABEOZ9_REG_ALARM_DAYS		0x13
 #define ABEOZ9_BIT_ALARM_DAYS		GENMASK(5, 0)
 #define ABEOZ9_REG_ALARM_WEEKDAYS	0x14
@@ -231,8 +231,6 @@ static int abeoz9_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
 	alarm->time.tm_sec = bcd2bin(FIELD_GET(ABEOZ9_BIT_ALARM_SEC, regs[0]));
 	alarm->time.tm_min = bcd2bin(FIELD_GET(ABEOZ9_BIT_ALARM_MIN, regs[1]));
 	alarm->time.tm_hour = bcd2bin(FIELD_GET(ABEOZ9_BIT_ALARM_HOURS, regs[2]));
-	if (FIELD_GET(ABEOZ9_BIT_ALARM_HOURS_PM, regs[2]))
-		alarm->time.tm_hour += 12;
 
 	alarm->time.tm_mday = bcd2bin(FIELD_GET(ABEOZ9_BIT_ALARM_DAYS, regs[3]));
 
@@ -396,13 +394,6 @@ static int abeoz9z3_temp_read(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	if ((val & ABEOZ9_REG_CTRL_STATUS_V1F) ||
-	    (val & ABEOZ9_REG_CTRL_STATUS_V2F)) {
-		dev_err(dev,
-			"thermometer might be disabled due to low voltage\n");
-		return -EINVAL;
-	}
-
 	switch (attr) {
 	case hwmon_temp_input:
 		ret = regmap_read(regmap, ABEOZ9_REG_REG_TEMP, &val);
diff --git a/drivers/rtc/rtc-ab8500.c b/drivers/rtc/rtc-ab8500.c
index 75bb2ac9005c..2dcda96f4a8e 100644
--- a/drivers/rtc/rtc-ab8500.c
+++ b/drivers/rtc/rtc-ab8500.c
@@ -403,7 +403,7 @@ static struct platform_driver ab8500_rtc_driver = {
 		.name = "ab8500-rtc",
 	},
 	.probe	= ab8500_rtc_probe,
-	.remove_new = ab8500_rtc_remove,
+	.remove = ab8500_rtc_remove,
 	.id_table = ab85xx_rtc_ids,
 };
 
diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c
index 1298962402ff..3fee27914ba8 100644
--- a/drivers/rtc/rtc-abx80x.c
+++ b/drivers/rtc/rtc-abx80x.c
@@ -39,7 +39,7 @@
 #define ABX8XX_REG_STATUS	0x0f
 #define ABX8XX_STATUS_AF	BIT(2)
 #define ABX8XX_STATUS_BLF	BIT(4)
-#define ABX8XX_STATUS_WDT	BIT(6)
+#define ABX8XX_STATUS_WDT	BIT(5)
 
 #define ABX8XX_REG_CTRL1	0x10
 #define ABX8XX_CTRL_WRITE	BIT(0)
diff --git a/drivers/rtc/rtc-ac100.c b/drivers/rtc/rtc-ac100.c
index fa642bba3cee..33626311fa78 100644
--- a/drivers/rtc/rtc-ac100.c
+++ b/drivers/rtc/rtc-ac100.c
@@ -628,7 +628,7 @@ MODULE_DEVICE_TABLE(of, ac100_rtc_match);
 
 static struct platform_driver ac100_rtc_driver = {
 	.probe		= ac100_rtc_probe,
-	.remove_new	= ac100_rtc_remove,
+	.remove		= ac100_rtc_remove,
 	.driver		= {
 		.name		= "ac100-rtc",
 		.of_match_table	= of_match_ptr(ac100_rtc_match),
diff --git a/drivers/rtc/rtc-amlogic-a4.c b/drivers/rtc/rtc-amlogic-a4.c
new file mode 100644
index 000000000000..2278b4c98a71
--- /dev/null
+++ b/drivers/rtc/rtc-amlogic-a4.c
@@ -0,0 +1,465 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
+/*
+ * Copyright (C) 2024 Amlogic, Inc. All rights reserved
+ * Author: Yiting Deng <yiting.deng@amlogic.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/rtc.h>
+#include <linux/time64.h>
+
+/* rtc oscillator rate */
+#define OSC_32K			32768
+#define OSC_24M			24000000
+
+#define RTC_CTRL		(0x0 << 2)		/* Control RTC */
+#define RTC_ALRM0_EN		BIT(0)
+#define RTC_OSC_SEL		BIT(8)
+#define RTC_ENABLE		BIT(12)
+
+#define RTC_COUNTER_REG		(0x1 << 2)		/* Program RTC counter initial value */
+
+#define RTC_ALARM0_REG		(0x2 << 2)		/* Program RTC alarm0 value */
+
+#define RTC_SEC_ADJUST_REG	(0x6 << 2)		/* Control second-based timing adjustment */
+#define RTC_MATCH_COUNTER	GENMASK(18, 0)
+#define RTC_SEC_ADJUST_CTRL	GENMASK(20, 19)
+#define RTC_ADJ_VALID		BIT(23)
+
+#define RTC_INT_MASK		(0x8 << 2)		/* RTC interrupt mask */
+#define RTC_ALRM0_IRQ_MSK	BIT(0)
+
+#define RTC_INT_CLR		(0x9 << 2)		/* Clear RTC interrupt */
+#define RTC_ALRM0_IRQ_CLR	BIT(0)
+
+#define RTC_OSCIN_CTRL0		(0xa << 2)		/* Control RTC clk from 24M */
+#define RTC_OSCIN_CTRL1		(0xb << 2)		/* Control RTC clk from 24M */
+#define RTC_OSCIN_IN_EN		BIT(31)
+#define RTC_OSCIN_OUT_CFG	GENMASK(29, 28)
+#define RTC_OSCIN_OUT_N0M0	GENMASK(11, 0)
+#define RTC_OSCIN_OUT_N1M1	GENMASK(23, 12)
+
+#define RTC_INT_STATUS		(0xc << 2)		/* RTC interrupt status */
+#define RTC_ALRM0_IRQ_STATUS	BIT(0)
+
+#define RTC_REAL_TIME		(0xd << 2)		/* RTC time value */
+
+#define RTC_OSCIN_OUT_32K_N0	0x2dc
+#define RTC_OSCIN_OUT_32K_N1	0x2db
+#define RTC_OSCIN_OUT_32K_M0	0x1
+#define RTC_OSCIN_OUT_32K_M1	0x2
+
+#define RTC_SWALLOW_SECOND	0x2
+#define RTC_INSERT_SECOND	0x3
+
+struct aml_rtc_config {
+	bool gray_stored;
+};
+
+struct aml_rtc_data {
+	struct regmap *map;
+	struct rtc_device *rtc_dev;
+	int irq;
+	struct clk *rtc_clk;
+	struct clk *sys_clk;
+	int rtc_enabled;
+	const struct aml_rtc_config *config;
+};
+
+static const struct regmap_config aml_rtc_regmap_config = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.max_register = RTC_REAL_TIME,
+};
+
+static inline u32 gray_to_binary(u32 gray)
+{
+	u32 bcd = gray;
+	int size = sizeof(bcd) * 8;
+	int i;
+
+	for (i = 0; (1 << i) < size; i++)
+		bcd ^= bcd >> (1 << i);
+
+	return bcd;
+}
+
+static inline u32 binary_to_gray(u32 bcd)
+{
+	return bcd ^ (bcd >> 1);
+}
+
+static int aml_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	struct aml_rtc_data *rtc = dev_get_drvdata(dev);
+	u32 time_sec;
+
+	/* if RTC disabled, read time failed */
+	if (!rtc->rtc_enabled)
+		return -EINVAL;
+
+	regmap_read(rtc->map, RTC_REAL_TIME, &time_sec);
+	if (rtc->config->gray_stored)
+		time_sec = gray_to_binary(time_sec);
+	rtc_time64_to_tm(time_sec, tm);
+	dev_dbg(dev, "%s: read time = %us\n", __func__, time_sec);
+
+	return 0;
+}
+
+static int aml_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	struct aml_rtc_data *rtc = dev_get_drvdata(dev);
+	u32 time_sec;
+
+	/* if RTC disabled, first enable it */
+	if (!rtc->rtc_enabled) {
+		regmap_write_bits(rtc->map, RTC_CTRL, RTC_ENABLE, RTC_ENABLE);
+		usleep_range(100, 200);
+		rtc->rtc_enabled = regmap_test_bits(rtc->map, RTC_CTRL, RTC_ENABLE);
+		if (!rtc->rtc_enabled)
+			return -EINVAL;
+	}
+
+	time_sec = rtc_tm_to_time64(tm);
+	if (rtc->config->gray_stored)
+		time_sec = binary_to_gray(time_sec);
+	regmap_write(rtc->map, RTC_COUNTER_REG, time_sec);
+	dev_dbg(dev, "%s: set time = %us\n", __func__, time_sec);
+
+	return 0;
+}
+
+static int aml_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+	struct aml_rtc_data *rtc = dev_get_drvdata(dev);
+	time64_t alarm_sec;
+
+	/* if RTC disabled, set alarm failed */
+	if (!rtc->rtc_enabled)
+		return -EINVAL;
+
+	regmap_update_bits(rtc->map, RTC_CTRL,
+			   RTC_ALRM0_EN, RTC_ALRM0_EN);
+	regmap_update_bits(rtc->map, RTC_INT_MASK,
+			   RTC_ALRM0_IRQ_MSK, 0);
+
+	alarm_sec = rtc_tm_to_time64(&alarm->time);
+	if (rtc->config->gray_stored)
+		alarm_sec = binary_to_gray(alarm_sec);
+	regmap_write(rtc->map, RTC_ALARM0_REG, alarm_sec);
+
+	dev_dbg(dev, "%s: alarm->enabled=%d alarm_set=%llds\n", __func__,
+		alarm->enabled, alarm_sec);
+
+	return 0;
+}
+
+static int aml_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+	struct aml_rtc_data *rtc = dev_get_drvdata(dev);
+	u32 alarm_sec;
+	int alarm_enable;
+	int alarm_mask;
+
+	/* if RTC disabled, read alarm failed */
+	if (!rtc->rtc_enabled)
+		return -EINVAL;
+
+	regmap_read(rtc->map, RTC_ALARM0_REG, &alarm_sec);
+	if (rtc->config->gray_stored)
+		alarm_sec = gray_to_binary(alarm_sec);
+	rtc_time64_to_tm(alarm_sec, &alarm->time);
+
+	alarm_enable = regmap_test_bits(rtc->map, RTC_CTRL, RTC_ALRM0_EN);
+	alarm_mask = regmap_test_bits(rtc->map, RTC_INT_MASK, RTC_ALRM0_IRQ_MSK);
+	alarm->enabled = (alarm_enable && !alarm_mask) ? 1 : 0;
+	dev_dbg(dev, "%s: alarm->enabled=%d alarm=%us\n", __func__,
+		alarm->enabled, alarm_sec);
+
+	return 0;
+}
+
+static int aml_rtc_read_offset(struct device *dev, long *offset)
+{
+	struct aml_rtc_data *rtc = dev_get_drvdata(dev);
+	u32 reg_val;
+	long val;<