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Code Issues Releases Wiki Activity

power: supply: cros_pchg: Sync port status on resume

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When a stylus is removed (or attached) during suspend, the device detach
(or attach) events can be lost. This patch makes the peripheral device
charge driver retrieve the latest status from the EC on resume.

BUG=b:276414488
TEST=Redrix

Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Daisuke Nojiri 2023-04-17 15:16:10 -07:00 committed by Sebastian Reichel
parent d41dab4c03
commit 97dd69b1ad
1 changed files with 22 additions and 3 deletions
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25
drivers/power/supply/cros_peripheral_charger.c
View file

@ -227,8 +227,7 @@ static int cros_pchg_get_prop(struct power_supply *psy,
return 0;
}
static int cros_pchg_event(const struct charger_data *charger,
unsigned long host_event)
static int cros_pchg_event(const struct charger_data *charger)
{
int i;
@ -256,7 +255,7 @@ static int cros_ec_notify(struct notifier_block *nb,
if (!(host_event & EC_MKBP_PCHG_DEVICE_EVENT))
return NOTIFY_DONE;
return cros_pchg_event(charger, host_event);
return cros_pchg_event(charger);
}
static int cros_pchg_probe(struct platform_device *pdev)
@ -281,6 +280,8 @@ static int cros_pchg_probe(struct platform_device *pdev)
charger->ec_dev = ec_dev;
charger->ec_device = ec_device;
platform_set_drvdata(pdev, charger);
ret = cros_pchg_port_count(charger);
if (ret <= 0) {
/*
@ -349,9 +350,27 @@ static int cros_pchg_probe(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int __maybe_unused cros_pchg_resume(struct device *dev)
{
struct charger_data *charger = dev_get_drvdata(dev);
/*
* Sync all ports on resume in case reports from EC are lost during
* the last suspend.
*/
cros_pchg_event(charger);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(cros_pchg_pm_ops, NULL, cros_pchg_resume);
static struct platform_driver cros_pchg_driver = {
.driver = {
.name = DRV_NAME,
.pm = &cros_pchg_pm_ops,
},
.probe = cros_pchg_probe
};