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Commit 0b0987b9 authored by Mao Jinlong's avatar Mao Jinlong Committed by Mao Jinlong
Browse files

rtc: qpnp-rtc: 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: Iee0a19ba5126265b36a353c1d1b249d09185564a
Signed-off-by: default avatarMao Jinlong <c_jmao@codeaurora.org>
parent 7dffb567

drivers/rtc/qpnp-rtc.c

+10 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2012-2015, 2017, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012-2015, 2017-2018, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -374,6 +374,15 @@ qpnp_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 = qpnp_read_wrapper(rtc_dd, value,

		rtc_dd->alarm_base + REG_OFFSET_ALARM_CTRL1, 1);

	if (rc) {

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

		return rc;

	}



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



	return 0;

}