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>

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);