exynos4x12: lower brightness on battery light

Change-Id: Ic3cd8f9bac985e09d7f7df0521cbaadfc9640f11

exynos4/exynos4x12/liblights/lights.c

@@ -46,6 +46,7 @@ char const*const LED_RED = "/sys/class/sec/led/led_r";
 char const*const LED_GREEN = "/sys/class/sec/led/led_g";
 char const*const LED_BLUE = "/sys/class/sec/led/led_b";
 char const*const LED_BLINK = "/sys/class/sec/led/led_blink";
+char const*const LED_BRIGHTNESS = "/sys/class/sec/led/led_br_lev";
 
 #define MAX_WRITE_CMD 25
 
@@ -53,6 +54,7 @@ struct led_config {
     int red;
     int green;
     int blue;
+    char brightness[MAX_WRITE_CMD];
     char blink[MAX_WRITE_CMD];
 };
 
@@ -151,6 +153,7 @@ static int write_leds(struct led_config led)
     err = write_int(LED_RED, led.red);
     err = write_int(LED_GREEN, led.green);
     err = write_int(LED_BLUE, led.blue);
+    err = write_str(LED_BRIGHTNESS, led.brightness);
     err = write_str(LED_BLINK, led.blink);
     pthread_mutex_unlock(&g_lock);
 
@@ -169,6 +172,7 @@ static int set_light_leds(struct light_state_t const *state, int type)
             led.red = 0;
             led.green = 0;
             led.blue = 0;
+            snprintf(led.brightness, MAX_WRITE_CMD, "0x00");
             snprintf(led.blink, MAX_WRITE_CMD, "0x000000 0 0");
         break;
     case LIGHT_FLASH_TIMED:
@@ -176,6 +180,7 @@ static int set_light_leds(struct light_state_t const *state, int type)
             led.red = (colorRGB >> 16) & 0xFF;
             led.green = (colorRGB >> 8) & 0xFF;
             led.blue = colorRGB & 0xFF;
+            snprintf(led.brightness, MAX_WRITE_CMD, "0xFF");
             snprintf(led.blink, MAX_WRITE_CMD, "0x%x %d %d", colorRGB, state->flashOnMS, state->flashOffMS);
         break;
     default:
@@ -204,11 +209,13 @@ static int set_light_battery(struct light_device_t *dev,
         led.red = 0;
         led.green = 0;
         led.blue = 0;
+        snprintf(led.brightness, MAX_WRITE_CMD, "0x00");
         snprintf(led.blink, MAX_WRITE_CMD, "0x000000 0 0");
     } else {
         led.red = (colorRGB >> 16) & 0xFF;
         led.green = (colorRGB >> 8) & 0xFF;
         led.blue = colorRGB & 0xFF;
+        snprintf(led.brightness, MAX_WRITE_CMD, "0x00");
         snprintf(led.blink, MAX_WRITE_CMD, "0x%x %d %d", colorRGB, state->flashOnMS, state->flashOffMS);
     }