diff options
| author | Marek Vasut <marek.vasut@gmail.com> | 2009-07-23 16:02:08 +0200 |
|---|---|---|
| committer | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-09-04 20:21:08 +0400 |
| commit | 7c87942aef52d2120e95ff1dec739998b9f95a78 (patch) | |
| tree | 472b649ed624b6d2ddb2ebc4d795ce113cfbbd3f /drivers/power | |
| parent | b8bdc1d0cfc488ac0d94724639f9a61b0a5a1d40 (diff) | |
| download | linux-7c87942aef52d2120e95ff1dec739998b9f95a78.tar.bz2 | |
wm97xx_battery: Use irq to detect charger state
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/wm97xx_battery.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/drivers/power/wm97xx_battery.c b/drivers/power/wm97xx_battery.c index 14ebd960ebe5..cad1ba283bfd 100644 --- a/drivers/power/wm97xx_battery.c +++ b/drivers/power/wm97xx_battery.c @@ -22,6 +22,7 @@ #include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/gpio.h> +#include <linux/irq.h> static DEFINE_MUTEX(bat_lock); static struct work_struct bat_work; @@ -137,6 +138,12 @@ static void wm97xx_bat_work(struct work_struct *work) wm97xx_bat_update(&bat_ps); } +static irqreturn_t wm97xx_chrg_irq(int irq, void *data) +{ + schedule_work(&bat_work); + return IRQ_HANDLED; +} + #ifdef CONFIG_PM static int wm97xx_bat_suspend(struct platform_device *dev, pm_message_t state) { @@ -179,13 +186,18 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev) return -EINVAL; } - if (pdata->charge_gpio >= 0 && gpio_is_valid(pdata->charge_gpio)) { + if (gpio_is_valid(pdata->charge_gpio)) { ret = gpio_request(pdata->charge_gpio, "BATT CHRG"); if (ret) goto err; ret = gpio_direction_input(pdata->charge_gpio); if (ret) goto err2; + ret = request_irq(gpio_to_irq(pdata->charge_gpio), + wm97xx_chrg_irq, IRQF_DISABLED, + "AC Detect", 0); + if (ret) + goto err2; props++; /* POWER_SUPPLY_PROP_STATUS */ } @@ -202,7 +214,7 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev) prop = kzalloc(props * sizeof(*prop), GFP_KERNEL); if (!prop) - goto err2; + goto err3; prop[i++] = POWER_SUPPLY_PROP_PRESENT; if (pdata->charge_gpio >= 0) @@ -235,13 +247,17 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev) if (!ret) schedule_work(&bat_work); else - goto err3; + goto err4; return 0; -err3: +err4: kfree(prop); +err3: + if (gpio_is_valid(pdata->charge_gpio)) + free_irq(gpio_to_irq(pdata->charge_gpio), dev); err2: - gpio_free(pdata->charge_gpio); + if (gpio_is_valid(pdata->charge_gpio)) + gpio_free(pdata->charge_gpio); err: return ret; } @@ -251,8 +267,10 @@ static int __devexit wm97xx_bat_remove(struct platform_device *dev) struct wm97xx_pdata *wmdata = dev->dev.platform_data; struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata; - if (pdata && pdata->charge_gpio && pdata->charge_gpio >= 0) + if (pdata && gpio_is_valid(pdata->charge_gpio)) { + free_irq(gpio_to_irq(pdata->charge_gpio), dev); gpio_free(pdata->charge_gpio); + } flush_scheduled_work(); power_supply_unregister(&bat_ps); kfree(prop); |