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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>
This commit is contained in:
Peter Fordham 2011-06-15 13:18:32 -07:00 committed by Wim Van Sebroeck
parent fad0a9dd0d
commit 641e4f4495
1 changed files with 23 additions and 0 deletions
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23
drivers/watchdog/mpcore_wdt.c
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@ -407,12 +407,35 @@ static int __devexit mpcore_wdt_remove(struct platform_device *dev)
return 0; 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 */ /* work with hotplug and coldplug */
MODULE_ALIAS("platform:mpcore_wdt"); MODULE_ALIAS("platform:mpcore_wdt");
static struct platform_driver mpcore_wdt_driver = { static struct platform_driver mpcore_wdt_driver = {
.probe = mpcore_wdt_probe, .probe = mpcore_wdt_probe,
.remove = __devexit_p(mpcore_wdt_remove), .remove = __devexit_p(mpcore_wdt_remove),
.suspend = mpcore_wdt_suspend,
.resume = mpcore_wdt_resume,
.shutdown = mpcore_wdt_shutdown, .shutdown = mpcore_wdt_shutdown,
.driver = { .driver = {
.owner = THIS_MODULE, .owner = THIS_MODULE,