diff --git a/liblight/lights.c b/liblight/lights.c
index 118fa66..4f692f9 100644
--- a/liblight/lights.c
+++ b/liblight/lights.c
@@ -65,6 +65,21 @@ static int rgb_to_brightness(struct light_state_t const *stat
                + (150*((color>>8) & 0x00ff)) + (29*(color & 0x00ff))) >> 8;
 }

+static int
+set_light_buttons(struct light_device_t* dev,
+        struct light_state_t const* state)
+{
+    int err = 0;
+    int brightness = rgb_to_brightness(state);
+
+    pthread_mutex_lock(&g_lock);
+
+    pthread_mutex_unlock(&g_lock);
+
+    return err;
+