From d81a0a3b062b8504b6780edc4ddc80e08c907c99 Mon Sep 17 00:00:00 2001
From: Dominggoes Isakh <drjisakh@gmail.com>
Date: Thu, 25 May 2017 14:49:46 +0200
Subject: [PATCH] liblights: Add support for variable touchkey brightness

Change-Id: Icc5c589e88dc342ae50b432187bae65a9b3a23d7
---
 liblights/include/samsung_lights.h | 3 +++
 liblights/lights.c                 | 9 +++++----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/liblights/include/samsung_lights.h b/liblights/include/samsung_lights.h
index dc07b6fe..f9392c1f 100644
--- a/liblights/include/samsung_lights.h
+++ b/liblights/include/samsung_lights.h
@@ -30,6 +30,9 @@
 #define BUTTON_BRIGHTNESS_NODE "/sys/class/sec/sec_touchkey/brightness"
 #define LED_BLINK_NODE "/sys/class/sec/led/led_blink"
 
+// Set to 1 to enable variable button brightness
+#define VAR_BUTTON_BRIGHTNESS 0
+
 /*
  * Brightness adjustment factors
  *
diff --git a/liblights/lights.c b/liblights/lights.c
index 7e64eceb..ad6edc63 100644
--- a/liblights/lights.c
+++ b/liblights/lights.c
@@ -145,12 +145,13 @@ static int set_light_buttons(struct light_device_t* dev __unused,
                              struct light_state_t const* state)
 {
     int err = 0;
-    int on = (state->color & COLOR_MASK);
-
     pthread_mutex_lock(&g_lock);
+    int brightness = (state->color & COLOR_MASK) ? 1 : 0;
 
-    err = set_cur_button_brightness(on ? 1 : 0);
-
+#ifdef VAR_BUTTON_BRIGHTNESS
+    brightness = rgb_to_brightness(state);
+#endif
+    err = set_cur_button_brightness(brightness);
     pthread_mutex_unlock(&g_lock);
 
     return err;