led: add getter function

- The getter function provides current led state.
  If the led is on the off state, the output struct
  will contain 0 values.

Change-Id: Id83363dfbdd5302b7957c19a2b3b36efa952f5fb
Signed-off-by: taeyoung <ty317.kim@samsung.com>

diff --git a/hw/led.h b/hw/led.h
index 69c6c10076bfac4aa8f1291faaff4183512939a9..1d54616730ee05ba56bf189cf54cdeb7585e19b5 100644 (file)
--- a/hw/led.h
+++ b/hw/led.h
@@ -68,6 +68,11 @@ struct led_device {
         * Set led state
         */
        int (*set_state)(struct led_state *state);
+
+       /**
+        * Get led state
+        */
+       int (*get_state)(struct led_state **state);
 };
 
 #endif