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watchdog: da9062: add power management ops

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Disable the watchdog during suspend if it is enabled and re-enable it on
resume. So we can sleep without the interruptions.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20191128171931.22563-1-m.felsch@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Marco Felsch 2019-11-28 18:19:31 +01:00 committed by Wim Van Sebroeck
parent d4ba76d798
commit f6c98b0838
1 changed files with 25 additions and 0 deletions
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25
drivers/watchdog/da9062_wdt.c
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@ -212,6 +212,7 @@ static int da9062_wdt_probe(struct platform_device *pdev)
watchdog_set_restart_priority(&wdt->wdtdev, 128); watchdog_set_restart_priority(&wdt->wdtdev, 128);
watchdog_set_drvdata(&wdt->wdtdev, wdt); watchdog_set_drvdata(&wdt->wdtdev, wdt);
dev_set_drvdata(dev, &wdt->wdtdev);
ret = devm_watchdog_register_device(dev, &wdt->wdtdev); ret = devm_watchdog_register_device(dev, &wdt->wdtdev);
if (ret < 0) if (ret < 0)
@ -220,10 +221,34 @@ static int da9062_wdt_probe(struct platform_device *pdev)
return da9062_wdt_ping(&wdt->wdtdev); return da9062_wdt_ping(&wdt->wdtdev);
} }
static int __maybe_unused da9062_wdt_suspend(struct device *dev)
{
struct watchdog_device *wdd = dev_get_drvdata(dev);
if (watchdog_active(wdd))
return da9062_wdt_stop(wdd);
return 0;
}
static int __maybe_unused da9062_wdt_resume(struct device *dev)
{
struct watchdog_device *wdd = dev_get_drvdata(dev);
if (watchdog_active(wdd))
return da9062_wdt_start(wdd);
return 0;
}
static SIMPLE_DEV_PM_OPS(da9062_wdt_pm_ops,
da9062_wdt_suspend, da9062_wdt_resume);
static struct platform_driver da9062_wdt_driver = { static struct platform_driver da9062_wdt_driver = {
.probe = da9062_wdt_probe, .probe = da9062_wdt_probe,
.driver = { .driver = {
.name = "da9062-watchdog", .name = "da9062-watchdog",
.pm = &da9062_wdt_pm_ops,
.of_match_table = da9062_compatible_id_table, .of_match_table = da9062_compatible_id_table,
}, },
}; };