power_supply: wm97xx_battery: use power_supply_get_drvdata

As the power supply framework provides a way to store and retrieve
private supply data, use it.

In the process, change the platform data for wm97xx_battery from a
container of a single struct wm97xx_batt_pdata to the direct point to wm97xx_batt_pdata.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

1 files changed, 10 insertions, 15 deletions

diff --git a/drivers/power/supply/wm97xx_battery.c b/drivers/power/supply/wm97xx_battery.c
index 6285626d142a..e3edb31ac880 100644
--- a/drivers/power/supply/wm97xx_battery.c
+++ b/drivers/power/supply/wm97xx_battery.c
@@ -30,8 +30,7 @@ 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;
+        struct wm97xx_batt_pdata *pdata = power_supply_get_drvdata(bat_ps);
 
         return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev.parent),
                                         pdata->batt_aux) * pdata->batt_mult /
@@ -40,8 +39,7 @@ 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;
+        struct wm97xx_batt_pdata *pdata = power_supply_get_drvdata(bat_ps);
 
         return wm97xx_read_aux_adc(dev_get_drvdata(bat_ps->dev.parent),
                                         pdata->temp_aux) * pdata->temp_mult /
@@ -52,8 +50,7 @@ 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;
+        struct wm97xx_batt_pdata *pdata = power_supply_get_drvdata(bat_ps);
 
         switch (psp) {
         case POWER_SUPPLY_PROP_STATUS:
@@ -103,8 +100,7 @@ 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;
+        struct wm97xx_batt_pdata *pdata = power_supply_get_drvdata(bat_ps);
 
         mutex_lock(&work_lock);
 
@@ -166,15 +162,15 @@ static int 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;
+        struct wm97xx_batt_pdata *pdata = dev->dev.platform_data;
+        struct power_supply_config cfg = {};
 
-        if (!wmdata) {
+        if (!pdata) {
                 dev_err(&dev->dev, "No platform data supplied\n");
                 return -EINVAL;
         }
 
-        pdata = wmdata->batt_pdata;
+        cfg.drv_data = pdata;
 
         if (dev->id != -1)
                 return -EINVAL;
@@ -243,7 +239,7 @@ static int wm97xx_bat_probe(struct platform_device *dev)
         bat_psy_desc.properties = prop;
         bat_psy_desc.num_properties = props;
 
-        bat_psy = power_supply_register(&dev->dev, &bat_psy_desc, NULL);
+        bat_psy = power_supply_register(&dev->dev, &bat_psy_desc, &cfg);
         if (!IS_ERR(bat_psy)) {
                 schedule_work(&bat_work);
         } else {
@@ -266,8 +262,7 @@ err:
 
 static int wm97xx_bat_remove(struct platform_device *dev)
 {
-        struct wm97xx_pdata *wmdata = dev->dev.platform_data;
-        struct wm97xx_batt_pdata *pdata = wmdata->batt_pdata;
+        struct wm97xx_batt_pdata *pdata = dev->dev.platform_data;
 
         if (pdata && gpio_is_valid(pdata->charge_gpio)) {
                 free_irq(gpio_to_irq(pdata->charge_gpio), dev);