leds-lp55xx: use lp55xx common led registration function

 LED class devices are registered in lp5521_register_leds() and
 lp5523_register_leds().
 Two separate functions are merged into consolidated lp55xx function,
 lp55xx_register_leds().

 Error handling fix:
 Unregistering LEDS are handled in lp55xx_register_leds() when LED registration
 failure occurs. So each driver error handler is changed to 'err_register_leds'

 Chip dependency: 'brightness_work_fn' and 'set_led_current'
 To make the structure abstract, both functions are configured in each driver.
 Those functions should be done by each driver because register control is
 chip-dependant work.

 lp55xx_init_led: skeleton
 Will be filled in next patch

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h
index 908b00a56b7e..219780a2d4eb 100644
--- a/drivers/leds/leds-lp55xx-common.h
+++ b/drivers/leds/leds-lp55xx-common.h
@@ -33,6 +33,8 @@ struct lp55xx_reg {
  * @reset              : Chip specific reset command
  * @enable             : Chip specific enable command
  * @post_init_device   : Chip specific initialization code
+ * @brightness_work_fn : Brightness work function
+ * @set_led_current    : LED current set function
  */
 struct lp55xx_device_config {
         const struct lp55xx_reg reset;
@@ -40,6 +42,12 @@ struct lp55xx_device_config {
 
         /* define if the device has specific initialization process */
         int (*post_init_device) (struct lp55xx_chip *chip);
+
+        /* access brightness register */
+        void (*brightness_work_fn)(struct work_struct *work);
+
+        /* current setting function */
+        void (*set_led_current) (struct lp55xx_led *led, u8 led_current);
 };
 
 /*
@@ -88,4 +96,7 @@ extern int lp55xx_update_bits(struct lp55xx_chip *chip, u8 reg,
 extern int lp55xx_init_device(struct lp55xx_chip *chip);
 extern void lp55xx_deinit_device(struct lp55xx_chip *chip);
 
+/* common LED class device functions */
+extern int lp55xx_register_leds(struct lp55xx_led *led,
+                                struct lp55xx_chip *chip);
 #endif /* _LEDS_LP55XX_COMMON_H */