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path: root/drivers/power/wm97xx_battery.c
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Diffstat (limited to 'drivers/power/wm97xx_battery.c')
-rw-r--r--drivers/power/wm97xx_battery.c79
1 files changed, 61 insertions, 18 deletions
diff --git a/drivers/power/wm97xx_battery.c b/drivers/power/wm97xx_battery.c
index b787335a841..f2bfd296dba 100644
--- a/drivers/power/wm97xx_battery.c
+++ b/drivers/power/wm97xx_battery.c
@@ -22,17 +22,20 @@
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
-#include <linux/wm97xx_batt.h>
+#include <linux/irq.h>
static DEFINE_MUTEX(bat_lock);
static struct work_struct bat_work;
struct mutex work_lock;
static int bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
-static struct wm97xx_batt_info *pdata;
+static struct wm97xx_batt_info *gpdata;
static enum power_supply_property *prop;
static unsigned long wm97xx_read_bat(struct power_supply *bat_ps)
{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev->parent),
pdata->batt_aux) * pdata->batt_mult /
pdata->batt_div;
@@ -40,6 +43,9 @@ static unsigned long wm97xx_read_bat(struct power_supply *bat_ps)
static unsigned long wm97xx_read_temp(struct power_supply *bat_ps)
{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev->parent),
pdata->temp_aux) * pdata->temp_mult /
pdata->temp_div;
@@ -49,6 +55,9 @@ static int wm97xx_bat_get_property(struct power_supply *bat_ps,
enum power_supply_property psp,
union power_supply_propval *val)
{
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = bat_status;
@@ -97,6 +106,8 @@ static void wm97xx_bat_external_power_changed(struct power_supply *bat_ps)
static void wm97xx_bat_update(struct power_supply *bat_ps)
{
int old_status = bat_status;
+ struct wm97xx_pdata *wmdata = bat_ps->dev->parent->platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
mutex_lock(&work_lock);
@@ -127,21 +138,29 @@ 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)
+static int wm97xx_bat_suspend(struct device *dev)
{
flush_scheduled_work();
return 0;
}
-static int wm97xx_bat_resume(struct platform_device *dev)
+static int wm97xx_bat_resume(struct device *dev)
{
schedule_work(&bat_work);
return 0;
}
-#else
-#define wm97xx_bat_suspend NULL
-#define wm97xx_bat_resume NULL
+
+static struct dev_pm_ops wm97xx_bat_pm_ops = {
+ .suspend = wm97xx_bat_suspend,
+ .resume = wm97xx_bat_resume,
+};
#endif
static int __devinit wm97xx_bat_probe(struct platform_device *dev)
@@ -149,6 +168,15 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev)
int ret = 0;
int props = 1; /* POWER_SUPPLY_PROP_PRESENT */
int i = 0;
+ struct wm97xx_pdata *wmdata = dev->dev.platform_data;
+ struct wm97xx_batt_pdata *pdata;
+
+ if (gpdata) {
+ dev_err(&dev->dev, "Do not pass platform_data through "
+ "wm97xx_bat_set_pdata!\n");
+ return -EINVAL;
+ } else
+ pdata = wmdata->batt_pdata;
if (dev->id != -1)
return -EINVAL;
@@ -156,17 +184,22 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev)
mutex_init(&work_lock);
if (!pdata) {
- dev_err(&dev->dev, "Please use wm97xx_bat_set_pdata\n");
+ dev_err(&dev->dev, "No platform_data supplied\n");
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 */
}
@@ -183,7 +216,7 @@ 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)
@@ -216,21 +249,30 @@ 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;
}
static int __devexit wm97xx_bat_remove(struct platform_device *dev)
{
- if (pdata && pdata->charge_gpio && pdata->charge_gpio >= 0)
+ struct wm97xx_pdata *wmdata = dev->dev.platform_data;
+ struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+
+ 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);
@@ -241,11 +283,12 @@ static struct platform_driver wm97xx_bat_driver = {
.driver = {
.name = "wm97xx-battery",
.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &wm97xx_bat_pm_ops,
+#endif
},
.probe = wm97xx_bat_probe,
.remove = __devexit_p(wm97xx_bat_remove),
- .suspend = wm97xx_bat_suspend,
- .resume = wm97xx_bat_resume,
};
static int __init wm97xx_bat_init(void)
@@ -258,9 +301,9 @@ static void __exit wm97xx_bat_exit(void)
platform_driver_unregister(&wm97xx_bat_driver);
}
-void __init wm97xx_bat_set_pdata(struct wm97xx_batt_info *data)
+void wm97xx_bat_set_pdata(struct wm97xx_batt_info *data)
{
- pdata = data;
+ gpdata = data;
}
EXPORT_SYMBOL_GPL(wm97xx_bat_set_pdata);