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authorPeter Fordham <peter.fordham@gmail.com>2011-06-15 13:18:32 -0700
committerWim Van Sebroeck <wim@iguana.be>2011-07-22 09:00:20 +0000
commit641e4f449512ced3a3b784b33ce191e664a6d2dd (patch)
tree391a4f648f81762295989973be9d5ceb3e0a1a0e /drivers/watchdog
parentfad0a9dd0da2dc9971e0e71f41134c791f2030c2 (diff)
watchdog: mpcore_wdt: Add suspend/resume support.
Add support for suspend and resume to the MPCore watchdog driver. Signed-off-by: Peter Fordham <peter.fordham@gmail.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/mpcore_wdt.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/watchdog/mpcore_wdt.c b/drivers/watchdog/mpcore_wdt.c
index 2b4af222b5f..4dc31024d26 100644
--- a/drivers/watchdog/mpcore_wdt.c
+++ b/drivers/watchdog/mpcore_wdt.c
@@ -407,12 +407,35 @@ static int __devexit mpcore_wdt_remove(struct platform_device *dev)
return 0;
}
+#ifdef CONFIG_PM
+static int mpcore_wdt_suspend(struct platform_device *dev, pm_message_t msg)
+{
+ struct mpcore_wdt *wdt = platform_get_drvdata(dev);
+ mpcore_wdt_stop(wdt); /* Turn the WDT off */
+ return 0;
+}
+
+static int mpcore_wdt_resume(struct platform_device *dev)
+{
+ struct mpcore_wdt *wdt = platform_get_drvdata(dev);
+ /* re-activate timer */
+ if (test_bit(0, &wdt->timer_alive))
+ mpcore_wdt_start(wdt);
+ return 0;
+}
+#else
+#define mpcore_wdt_suspend NULL
+#define mpcore_wdt_resume NULL
+#endif
+
/* work with hotplug and coldplug */
MODULE_ALIAS("platform:mpcore_wdt");
static struct platform_driver mpcore_wdt_driver = {
.probe = mpcore_wdt_probe,
.remove = __devexit_p(mpcore_wdt_remove),
+ .suspend = mpcore_wdt_suspend,
+ .resume = mpcore_wdt_resume,
.shutdown = mpcore_wdt_shutdown,
.driver = {
.owner = THIS_MODULE,