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power: supply: sc2731_charger: Add one work to charge/discharge

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Since the USB notifier context is atomic, we can not start or stop charging
in atomic context. Thus this patch adds one work to help to charge or
discharge.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Baolin Wang 2018-11-12 18:52:35 +08:00 committed by Sebastian Reichel
parent e6ae9a05a4
commit 8ac1091ed1
1 changed files with 22 additions and 8 deletions
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30
drivers/power/supply/sc2731_charger.c
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@ -57,9 +57,11 @@ struct sc2731_charger_info {
struct usb_phy *usb_phy;
struct notifier_block usb_notify;
struct power_supply *psy_usb;
struct work_struct work;
struct mutex lock;
bool charging;
u32 base;
u32 limit;
};
static void sc2731_charger_stop_charge(struct sc2731_charger_info *info)
@ -318,22 +320,21 @@ static const struct power_supply_desc sc2731_charger_desc = {
.property_is_writeable = sc2731_charger_property_is_writeable,
};
static int sc2731_charger_usb_change(struct notifier_block *nb,
unsigned long limit, void *data)
static void sc2731_charger_work(struct work_struct *data)
{
struct sc2731_charger_info *info =
container_of(nb, struct sc2731_charger_info, usb_notify);
int ret = 0;
container_of(data, struct sc2731_charger_info, work);
int ret;
mutex_lock(&info->lock);
if (limit > 0) {
if (info->limit > 0) {
/* set current limitation and start to charge */
ret = sc2731_charger_set_current_limit(info, limit);
ret = sc2731_charger_set_current_limit(info, info->limit);
if (ret)
goto out;
ret = sc2731_charger_set_current(info, limit);
ret = sc2731_charger_set_current(info, info->limit);
if (ret)
goto out;
@ -350,7 +351,19 @@ static int sc2731_charger_usb_change(struct notifier_block *nb,
out:
mutex_unlock(&info->lock);
return ret;
}
static int sc2731_charger_usb_change(struct notifier_block *nb,
unsigned long limit, void *data)
{
struct sc2731_charger_info *info =
container_of(nb, struct sc2731_charger_info, usb_notify);
info->limit = limit;
schedule_work(&info->work);
return NOTIFY_OK;
}
static int sc2731_charger_hw_init(struct sc2731_charger_info *info)
@ -432,6 +445,7 @@ static int sc2731_charger_probe(struct platform_device *pdev)
mutex_init(&info->lock);
info->dev = &pdev->dev;
INIT_WORK(&info->work, sc2731_charger_work);
info->regmap = dev_get_regmap(pdev->dev.parent, NULL);
if (!info->regmap) {