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authorJanusz Uzycki <j.uzycki@elproma.com.pl>2014-09-22 22:55:47 +0200
committerWim Van Sebroeck <wim@iguana.be>2014-10-20 20:55:54 +0200
commit3281b85c8697938e344d67144ca8ba520fa54d2b (patch)
tree8a2fbd7f020bc50dcce4f27b00bc2434dd3d0c93 /drivers/watchdog
parentwatchdog: Add DA9063 PMIC watchdog driver. (diff)
downloadlinux-3281b85c8697938e344d67144ca8ba520fa54d2b.tar.xz
linux-3281b85c8697938e344d67144ca8ba520fa54d2b.zip
stmp3xxx_rtc_wdt: Add suspend/resume PM support
There is no conflict with rtc/rtc-stmp3xxx.c parent because modified registers in PM functions of stmp3xxx_rtc_wdt are different. Signed-off-by: Janusz Uzycki <j.uzycki@elproma.com.pl> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/stmp3xxx_rtc_wdt.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/watchdog/stmp3xxx_rtc_wdt.c b/drivers/watchdog/stmp3xxx_rtc_wdt.c
index 3804d5e9baea..a62b1b6decf4 100644
--- a/drivers/watchdog/stmp3xxx_rtc_wdt.c
+++ b/drivers/watchdog/stmp3xxx_rtc_wdt.c
@@ -94,9 +94,33 @@ static int stmp3xxx_wdt_remove(struct platform_device *pdev)
return 0;
}
+static int __maybe_unused stmp3xxx_wdt_suspend(struct device *dev)
+{
+ struct watchdog_device *wdd = &stmp3xxx_wdd;
+
+ if (watchdog_active(wdd))
+ return wdt_stop(wdd);
+
+ return 0;
+}
+
+static int __maybe_unused stmp3xxx_wdt_resume(struct device *dev)
+{
+ struct watchdog_device *wdd = &stmp3xxx_wdd;
+
+ if (watchdog_active(wdd))
+ return wdt_start(wdd);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(stmp3xxx_wdt_pm_ops,
+ stmp3xxx_wdt_suspend, stmp3xxx_wdt_resume);
+
static struct platform_driver stmp3xxx_wdt_driver = {
.driver = {
.name = "stmp3xxx_rtc_wdt",
+ .pm = &stmp3xxx_wdt_pm_ops,
},
.probe = stmp3xxx_wdt_probe,
.remove = stmp3xxx_wdt_remove,