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Commit 1265a545 authored by Guixiong Wei's avatar Guixiong Wei
Browse files

rtc: 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.

Change-Id: I64640278f2efb4d8922df1fc7030d4f4bca9a528
Signed-off-by: default avatarGuixiong Wei <guixiong@codeaurora.org>
parent 54d02587

drivers/rtc/rtc-pm8xxx.c

+9 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
/* 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
@@ -297,6 +298,14 @@ static int pm8xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) 
		alarm->time.tm_sec, alarm->time.tm_mday,

		alarm->time.tm_mon, alarm->time.tm_year);



	rc = regmap_bulk_read(rtc_dd->regmap, regs->alarm_ctrl, value, 1);

	if (rc) {

		dev_err(dev, "Read from ALARM CTRL1 failed\n");

		return rc;

	}



	alarm->enabled = !!(value[0] & PM8xxx_RTC_ALARM_ENABLE);



	return 0;

}