thermal: pm8xxx-tm: Turn off the temperature alarm during shutdown
The temperature alarm consumes additional current if it remains
turned on when the device is off. Turn off the alarm in the
shutdown hook, as it not required when the device is off.
CRs-Fixed: 474628
Change-Id: Ibfaee6b74aeebcb530ae7375f623955f80df148e
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
diff --git a/drivers/thermal/pm8xxx-tm.c b/drivers/thermal/pm8xxx-tm.c
index 4568933..99a9454 100644
--- a/drivers/thermal/pm8xxx-tm.c
+++ b/drivers/thermal/pm8xxx-tm.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2011-2013, 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
@@ -682,6 +682,13 @@
return 0;
}
+static void pm8xxx_tm_shutdown(struct platform_device *pdev)
+{
+ struct pm8xxx_tm_chip *chip = platform_get_drvdata(pdev);
+
+ pm8xxx_tm_write_pwm(chip, TEMP_ALARM_PWM_EN_NEVER);
+}
+
#ifdef CONFIG_PM
static int pm8xxx_tm_suspend(struct device *dev)
{
@@ -719,6 +726,7 @@
static struct platform_driver pm8xxx_tm_driver = {
.probe = pm8xxx_tm_probe,
.remove = __devexit_p(pm8xxx_tm_remove),
+ .shutdown = pm8xxx_tm_shutdown,
.driver = {
.name = PM8XXX_TM_DEV_NAME,
.owner = THIS_MODULE,