diff options
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/ucs1002_power.c | 75 |
1 files changed, 43 insertions, 32 deletions
diff --git a/drivers/power/supply/ucs1002_power.c b/drivers/power/supply/ucs1002_power.c index cdb9a23d825f..ef673ec3db56 100644 --- a/drivers/power/supply/ucs1002_power.c +++ b/drivers/power/supply/ucs1002_power.c @@ -38,6 +38,7 @@ /* Interrupt Status */ #define UCS1002_REG_INTERRUPT_STATUS 0x10 +# define F_ERR BIT(7) # define F_DISCHARGE_ERR BIT(6) # define F_RESET BIT(5) # define F_MIN_KEEP_OUT BIT(4) @@ -103,6 +104,9 @@ struct ucs1002_info { struct regulator_dev *rdev; bool present; bool output_disable; + struct delayed_work health_poll; + int health; + }; static enum power_supply_property ucs1002_props[] = { @@ -362,32 +366,6 @@ static int ucs1002_get_usb_type(struct ucs1002_info *info, return 0; } -static int ucs1002_get_health(struct ucs1002_info *info, - union power_supply_propval *val) -{ - unsigned int reg; - int ret, health; - - ret = regmap_read(info->regmap, UCS1002_REG_INTERRUPT_STATUS, ®); - if (ret) - return ret; - - if (reg & F_TSD) - health = POWER_SUPPLY_HEALTH_OVERHEAT; - else if (reg & (F_OVER_VOLT | F_BACK_VOLT)) - health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; - else if (reg & F_OVER_ILIM) - health = POWER_SUPPLY_HEALTH_OVERCURRENT; - else if (reg & (F_DISCHARGE_ERR | F_MIN_KEEP_OUT)) - health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; - else - health = POWER_SUPPLY_HEALTH_GOOD; - - val->intval = health; - - return 0; -} - static int ucs1002_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) @@ -406,7 +384,7 @@ static int ucs1002_get_property(struct power_supply *psy, case POWER_SUPPLY_PROP_USB_TYPE: return ucs1002_get_usb_type(info, val); case POWER_SUPPLY_PROP_HEALTH: - return ucs1002_get_health(info, val); + return val->intval = info->health; case POWER_SUPPLY_PROP_PRESENT: val->intval = info->present; return 0; @@ -458,6 +436,38 @@ static const struct power_supply_desc ucs1002_charger_desc = { .num_properties = ARRAY_SIZE(ucs1002_props), }; +static void ucs1002_health_poll(struct work_struct *work) +{ + struct ucs1002_info *info = container_of(work, struct ucs1002_info, + health_poll.work); + int ret; + u32 reg; + + ret = regmap_read(info->regmap, UCS1002_REG_INTERRUPT_STATUS, ®); + if (ret) + return; + + /* bad health and no status change, just schedule us again in a while */ + if ((reg & F_ERR) && info->health != POWER_SUPPLY_HEALTH_GOOD) { + schedule_delayed_work(&info->health_poll, + msecs_to_jiffies(2000)); + return; + } + + if (reg & F_TSD) + info->health = POWER_SUPPLY_HEALTH_OVERHEAT; + else if (reg & (F_OVER_VOLT | F_BACK_VOLT)) + info->health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + else if (reg & F_OVER_ILIM) + info->health = POWER_SUPPLY_HEALTH_OVERCURRENT; + else if (reg & (F_DISCHARGE_ERR | F_MIN_KEEP_OUT)) + info->health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; + else + info->health = POWER_SUPPLY_HEALTH_GOOD; + + sysfs_notify(&info->charger->dev.kobj, NULL, "health"); +} + static irqreturn_t ucs1002_charger_irq(int irq, void *data) { int ret, regval; @@ -484,7 +494,7 @@ static irqreturn_t ucs1002_alert_irq(int irq, void *data) { struct ucs1002_info *info = data; - power_supply_changed(info->charger); + mod_delayed_work(system_wq, &info->health_poll, 0); return IRQ_HANDLED; } @@ -632,6 +642,9 @@ static int ucs1002_probe(struct i2c_client *client, return ret; } + info->health = POWER_SUPPLY_HEALTH_GOOD; + INIT_DELAYED_WORK(&info->health_poll, ucs1002_health_poll); + if (irq_a_det > 0) { ret = devm_request_threaded_irq(dev, irq_a_det, NULL, ucs1002_charger_irq, @@ -645,10 +658,8 @@ static int ucs1002_probe(struct i2c_client *client, } if (irq_alert > 0) { - ret = devm_request_threaded_irq(dev, irq_alert, NULL, - ucs1002_alert_irq, - IRQF_ONESHOT, - "ucs1002-alert", info); + ret = devm_request_irq(dev, irq_alert, ucs1002_alert_irq, + 0,"ucs1002-alert", info); if (ret) { dev_err(dev, "Failed to request ALERT threaded irq: %d\n", ret); |