diff options
Diffstat (limited to 'drivers/watchdog/mtk_wdt.c')
| -rw-r--r-- | drivers/watchdog/mtk_wdt.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c index 938b987de551..056412ca836d 100644 --- a/drivers/watchdog/mtk_wdt.c +++ b/drivers/watchdog/mtk_wdt.c @@ -221,17 +221,47 @@ static int mtk_wdt_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int mtk_wdt_suspend(struct device *dev) +{ + struct mtk_wdt_dev *mtk_wdt = dev_get_drvdata(dev); + + if (watchdog_active(&mtk_wdt->wdt_dev)) + mtk_wdt_stop(&mtk_wdt->wdt_dev); + + return 0; +} + +static int mtk_wdt_resume(struct device *dev) +{ + struct mtk_wdt_dev *mtk_wdt = dev_get_drvdata(dev); + + if (watchdog_active(&mtk_wdt->wdt_dev)) { + mtk_wdt_start(&mtk_wdt->wdt_dev); + mtk_wdt_ping(&mtk_wdt->wdt_dev); + } + + return 0; +} +#endif + static const struct of_device_id mtk_wdt_dt_ids[] = { { .compatible = "mediatek,mt6589-wdt" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, mtk_wdt_dt_ids); +static const struct dev_pm_ops mtk_wdt_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mtk_wdt_suspend, + mtk_wdt_resume) +}; + static struct platform_driver mtk_wdt_driver = { .probe = mtk_wdt_probe, .remove = mtk_wdt_remove, .driver = { .name = DRV_NAME, + .pm = &mtk_wdt_pm_ops, .of_match_table = mtk_wdt_dt_ids, }, }; |