ALARM_EN status is retained in PMIC register after device shutdown if poweron_alarm is enabled. Read it to make sure the driver has consistent value with the register status.
Signed-off-by: Guixiong Wei <[email protected]> --- drivers/rtc/rtc-pm8xxx.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c index 0d9dd6f..70d1ff5 100644 --- a/drivers/rtc/rtc-pm8xxx.c +++ b/drivers/rtc/rtc-pm8xxx.c @@ -20,6 +20,7 @@ /* RTC_CTRL register bit fields */ #define PM8xxx_RTC_ENABLE BIT(7) #define PM8xxx_RTC_ALARM_CLEAR BIT(0) +#define PM8xxx_RTC_ALARM_ENABLE BIT(7) #define NUM_8_BIT_RTC_REGS 0x4 @@ -265,6 +266,7 @@ static int pm8xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) static int pm8xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) { int rc; + unsigned int ctrl_reg; u8 value[NUM_8_BIT_RTC_REGS]; unsigned long secs; struct pm8xxx_rtc *rtc_dd = dev_get_drvdata(dev); @@ -282,6 +284,13 @@ static int pm8xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) rtc_time64_to_tm(secs, &alarm->time); + rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); + if (rc) { + dev_err(dev, "Read from RTC alarm control register failed\n"); + return rc; + } + alarm->enabled = !!(ctrl_reg & PM8xxx_RTC_ALARM_ENABLE); + dev_dbg(dev, "Alarm set for - h:m:s=%ptRt, y-m-d=%ptRdr\n", &alarm->time, &alarm->time); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
