From: Marco Felsch <m.felsch@pengutronix.de>
To: support.opensource@diasemi.com, wim@linux-watchdog.org,
linux@roeck-us.net
Cc: linux-watchdog@vger.kernel.org, kernel@pengutronix.de
Subject: [PATCH] watchdog: da9062: add power management ops
Date: Thu, 28 Nov 2019 18:19:31 +0100 [thread overview]
Message-ID: <20191128171931.22563-1-m.felsch@pengutronix.de> (raw)
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>
---
drivers/watchdog/da9062_wdt.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
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,
},
};
--
2.20.1
next reply other threads:[~2019-11-28 17:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-28 17:19 Marco Felsch [this message]
2019-11-28 17:41 ` [PATCH] watchdog: da9062: add power management ops Guenter Roeck
2019-12-02 10:04 ` Adam Thomson
2019-12-02 10:56 ` Marco Felsch
2019-12-02 11:11 ` Adam Thomson
2019-12-02 13:03 ` Marco Felsch
2019-12-02 13:27 ` Adam Thomson
2019-12-02 13:38 ` Guenter Roeck
2019-12-02 14:44 ` Marco Felsch
2019-12-02 14:44 ` Adam Thomson
2019-12-02 15:06 ` Marco Felsch
2019-12-02 15:17 ` Adam Thomson
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