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watchdog: pm8916_wdt: Add system sleep callbacks 

Add suspend and resume pm operations.
Tested on dragonboard-410c.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1581435483-6796-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Loic Poulain 2020-02-11 16:38:03 +01:00 committed by Wim Van Sebroeck
parent 000de54171
commit b1413e6edc
1 changed files with 25 additions and 0 deletions
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25
drivers/watchdog/pm8916_wdt.c
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@ -192,6 +192,7 @@ static int pm8916_wdt_probe(struct platform_device *pdev)
wdt->wdev.timeout = PM8916_WDT_DEFAULT_TIMEOUT;
wdt->wdev.pretimeout = 0;
watchdog_set_drvdata(&wdt->wdev, wdt);
platform_set_drvdata(pdev, wdt);
watchdog_init_timeout(&wdt->wdev, 0, dev);
pm8916_wdt_configure_timers(&wdt->wdev);
@ -199,6 +200,29 @@ static int pm8916_wdt_probe(struct platform_device *pdev)
return devm_watchdog_register_device(dev, &wdt->wdev);
}
static int __maybe_unused pm8916_wdt_suspend(struct device *dev)
{
struct pm8916_wdt *wdt = dev_get_drvdata(dev);
if (watchdog_active(&wdt->wdev))
return pm8916_wdt_stop(&wdt->wdev);
return 0;
}
static int __maybe_unused pm8916_wdt_resume(struct device *dev)
{
struct pm8916_wdt *wdt = dev_get_drvdata(dev);
if (watchdog_active(&wdt->wdev))
return pm8916_wdt_start(&wdt->wdev);
return 0;
}
static SIMPLE_DEV_PM_OPS(pm8916_wdt_pm_ops, pm8916_wdt_suspend,
pm8916_wdt_resume);
static const struct of_device_id pm8916_wdt_id_table[] = {
{ .compatible = "qcom,pm8916-wdt" },
{ }
@ -210,6 +234,7 @@ static struct platform_driver pm8916_wdt_driver = {
.driver = {
.name = "pm8916-wdt",
.of_match_table = of_match_ptr(pm8916_wdt_id_table),
.pm = &pm8916_wdt_pm_ops,
},
};
module_platform_driver(pm8916_wdt_driver);