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| author | Marco Felsch <m.felsch@pengutronix.de> | 2019-11-28 18:19:31 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2020-01-27 15:55:45 +0100 |
| commit | f6c98b08381c774a56b2f0f0067da646c23f1447 (patch) | |
| tree | f248426f8f1a9a6560ff1737d0bf4491a9d84ec5 /drivers/watchdog | |
| parent | d4ba76d79854178ffff55d66e1a72580484a741d (diff) | |
| download | linux-f6c98b08381c774a56b2f0f0067da646c23f1447.tar.gz | |
watchdog: da9062: add power management ops
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>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/da9062_wdt.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/watchdog/da9062_wdt.c b/drivers/watchdog/da9062_wdt.c index e149e66a6ea9..2a1e7de25b71 100644 --- a/drivers/watchdog/da9062_wdt.c +++ b/drivers/watchdog/da9062_wdt.c @@ -212,6 +212,7 @@ static int da9062_wdt_probe(struct platform_device *pdev) watchdog_set_restart_priority(&wdt->wdtdev, 128); watchdog_set_drvdata(&wdt->wdtdev, wdt); + dev_set_drvdata(dev, &wdt->wdtdev); ret = devm_watchdog_register_device(dev, &wdt->wdtdev); if (ret < 0) @@ -220,10 +221,34 @@ static int da9062_wdt_probe(struct platform_device *pdev) 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 = { .probe = da9062_wdt_probe, .driver = { .name = "da9062-watchdog", + .pm = &da9062_wdt_pm_ops, .of_match_table = da9062_compatible_id_table, }, }; |