pda_power: add init and exit function callbacks

This adds init/exit function callbacks to pda_power, to
provide a place where the platform code can request/free
GPIOs that it wants to use in the is_ac_online, is_usb_online
and set_charge functions.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

2 files changed, 15 insertions, 0 deletions

diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
index c8aa55b81fd8..82810b7bff9c 100644
--- a/drivers/power/pda_power.c
+++ b/drivers/power/pda_power.c
@@ -209,6 +209,12 @@ static int pda_power_probe(struct platform_device *pdev)
 
         pdata = pdev->dev.platform_data;
 
+        if (pdata->init) {
+                ret = pdata->init(dev);
+                if (ret < 0)
+                        goto init_failed;
+        }
+
         update_status();
         update_charger();
 
@@ -298,6 +304,9 @@ ac_irq_failed:
         if (pdata->is_ac_online)
                 power_supply_unregister(&pda_psy_ac);
 ac_supply_failed:
+        if (pdata->exit)
+                pdata->exit(dev);
+init_failed:
 wrongid:
         return ret;
 }
@@ -318,6 +327,8 @@ static int pda_power_remove(struct platform_device *pdev)
                 power_supply_unregister(&pda_psy_usb);
         if (pdata->is_ac_online)
                 power_supply_unregister(&pda_psy_ac);
+        if (pdata->exit)
+                pdata->exit(dev);
 
         return 0;
 }
diff --git a/include/linux/pda_power.h b/include/linux/pda_power.h
index 225beb136807..cb7d10f30763 100644
--- a/include/linux/pda_power.h
+++ b/include/linux/pda_power.h
@@ -16,10 +16,14 @@
 #define PDA_POWER_CHARGE_AC  (1 << 0)
 #define PDA_POWER_CHARGE_USB (1 << 1)
 
+struct device;
+
 struct pda_power_pdata {
+        int (*init)(struct device *dev);
         int (*is_ac_online)(void);
         int (*is_usb_online)(void);
         void (*set_charge)(int flags);
+        void (*exit)(struct device *dev);
 
         char **supplied_to;
         size_t num_supplicants;