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: Mao Jinlong <c_jmao@codeaurora.org>
diff --git a/drivers/rtc/qpnp-rtc.c b/drivers/rtc/qpnp-rtc.c
index 4152086..06833ef 100644
--- a/drivers/rtc/qpnp-rtc.c
+++ b/drivers/rtc/qpnp-rtc.c
@@ -1,4 +1,4 @@
-/* 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 @@
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;
}