power: supply: rk817: query battery properties right after resume

The driver reads battery properties every 8 seconds. In order to prevent
problems with wrong property values right after resume, trigger an
update of those properties on resuming the system and restart the
8-second interval from there.

Signed-off-by: Maximilian Weigand <mweigand@mweigand.net>
Link: https://lore.kernel.org/r/20230601-rk817_query_at_resume-v1-1-630b0adefbd9@mweigand.net
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

diff --git a/drivers/power/supply/rk817_charger.c b/drivers/power/supply/rk817_charger.c
index 8328bcea1a29906e38e7d214d79b1ed3cae5972f..393de49b010be8b29c448ba738a54f0c4810e42e 100644 (file)
--- a/drivers/power/supply/rk817_charger.c
+++ b/drivers/power/supply/rk817_charger.c
@@ -1198,11 +1198,24 @@ static int rk817_charger_probe(struct platform_device *pdev)
        return 0;
 }
 
+static int __maybe_unused rk817_resume(struct device *dev)
+{
+
+       struct rk817_charger *charger = dev_get_drvdata(dev);
+
+       /* force an immediate update */
+       mod_delayed_work(system_wq, &charger->work, 0);
+
+       return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(rk817_charger_pm, NULL, rk817_resume);
 
 static struct platform_driver rk817_charger_driver = {
        .probe    = rk817_charger_probe,
        .driver   = {
                .name  = "rk817-charger",
+               .pm             = &rk817_charger_pm,
        },
 };
 module_platform_driver(rk817_charger_driver);