From 641e4f449512ced3a3b784b33ce191e664a6d2dd Mon Sep 17 00:00:00 2001 From: Peter Fordham Date: Wed, 15 Jun 2011 13:18:32 -0700 Subject: watchdog: mpcore_wdt: Add suspend/resume support. Add support for suspend and resume to the MPCore watchdog driver. Signed-off-by: Peter Fordham Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/mpcore_wdt.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'drivers/watchdog/mpcore_wdt.c') diff --git a/drivers/watchdog/mpcore_wdt.c b/drivers/watchdog/mpcore_wdt.c index 2b4af222b5f2..4dc31024d26c 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, -- cgit v1.2.3