On Tue, Feb 11, 2020 at 04:38:03PM +0100, Loic Poulain wrote:
> Add suspend and resume pm operations.
> Tested on dragonboard-410c.
>
> Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/watchdog/pm8916_wdt.c | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> diff --git a/drivers/watchdog/pm8916_wdt.c b/drivers/watchdog/pm8916_wdt.c
> index 1213179..0937b8d3 100644
> --- a/drivers/watchdog/pm8916_wdt.c
> +++ b/drivers/watchdog/pm8916_wdt.c
> @@ -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);
> --
> 2.7.4
>
