Add support for suspend and resume to the MPCore watchdog driver.
---
drivers/watchdog/mpcore_wdt.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/drivers/watchdog/mpcore_wdt.c b/drivers/watchdog/mpcore_wdt.c
index 2b4af22..5f63a74 100644
--- a/drivers/watchdog/mpcore_wdt.c
+++ b/drivers/watchdog/mpcore_wdt.c
@@ -407,12 +407,36 @@ 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,
--
1.7.0.4
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