diff options
| author | Guixiong Wei <guixiong@codeaurora.org> | 2020-12-24 19:28:57 +0800 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2021-01-12 23:46:46 +0100 |
| commit | 121f54efc3fb9854f581fede4f719a4aef7ed5b3 (patch) | |
| tree | c4395c95f2133477b5bb8c8c9d799b03469c92f6 /drivers/rtc/rtc-pm8xxx.c | |
| parent | 5c8fe583cce542aa0b84adc939ce85293de36e5e (diff) | |
| download | linux-121f54efc3fb9854f581fede4f719a4aef7ed5b3.tar.gz | |
rtc: pm8xxx: Read ALARM_EN and update to alarm enabled status
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 <guixiong@codeaurora.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/1608809337-18852-1-git-send-email-guixiong@codeaurora.org
Diffstat (limited to 'drivers/rtc/rtc-pm8xxx.c')
| -rw-r--r-- | drivers/rtc/rtc-pm8xxx.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c index 0d9dd6faabbaa..70d1ff53b813e 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 @@ rtc_rw_fail: 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); |