button-backlight: dehardcode button brightnesses

config/mce.ini

@@ -349,3 +349,16 @@ NoAlsLowering=1
 # on xt894/xt875
 #[QuirksMapphone]
 #OfflineCpu=0
+
+[Backlights]
+
+# Brightness in percent for different types of button backlights
+# The 6 values in eatch profile corrispond to the level of brightness
+# desired at:
+# 0 - 25 lux
+# 25 - 100 lux
+# 100 - 300 lux
+# 300 - 1000 lux
+# 1000+ lux
+KeyboardBrightness=80;128;0;0;0
+ButtonBrightness=1;1;0;0;0

src/modules/button-backlight.c

@@ -40,6 +40,10 @@ static gboolean als_enabled = true;
 static struct button_backlight *button_backlights = NULL;
 static unsigned int count_backlights = 0;
 
+/* format: { {series of 5 points in mlux}, {5 corresponding brightness values} } */
+static struct brightness brightness_map_kbd = { {25, 100000, 300000, 1000000, 30000000}, {80, 128, 0, 0, 0} };
+static struct brightness brightness_map_btn = { {25, 100000, 300000, 1000000, 30000000}, {1, 1, 0, 0, 0} };
+
 static void set_backlight_states(bool by_display_state)
 {
 	for (unsigned int i = 0; i < count_backlights; ++i) {
@@ -274,6 +278,24 @@ static gboolean init_backlights(void)
 	return true;
 }
 
+static bool load_brightness_profile(const char* key, struct brightness *profile)
+{
+	gsize length;
+	gint *profilelist = mce_conf_get_int_list(MCE_CONF_BACKLIGHT_GROUP, key, &length, NULL);
+
+	if (profilelist == NULL || length != MCE_BUTTON_BACKLIGHT_BRIGHTNESS_VALUES) {
+		mce_log(LL_WARN, "%s: Failed to load brightness profile %s%s using defaults", MODULE_NAME, key,
+				profilelist != NULL && length != MCE_BUTTON_BACKLIGHT_BRIGHTNESS_VALUES ? " due to there being less or more than 5 values" : "");
+		return false;
+	}
+
+	for(size_t i = 0; i < length; ++i)
+		profile->value[i] = profilelist[i];
+
+	g_free(profilelist);
+	return true;
+}
+
 /**
  * Init function for the keypad module
  *
@@ -288,6 +310,9 @@ const gchar *g_module_check_init(GModule *module)
 	gchar *status = NULL;
 
 	(void)module;
+
+	load_brightness_profile("KeyboardBrightness", &brightness_map_kbd);
+	load_brightness_profile("ButtonBrightness", &brightness_map_btn);
 
 	if (!init_backlights())
 		return NULL;

src/modules/button-backlight.h

@@ -8,6 +8,8 @@
 #define MCE_CONF_CONFIGURED_LIGHTS	"ConfiguredLights"
 #define MCE_CONF_COUNT_BACKLIGHT_FIELDS 6
 
+#define MCE_BUTTON_BACKLIGHT_BRIGHTNESS_VALUES 5
+
 #define LED_SYSFS_PATH "/sys/class/leds/"
 
 #define LED_BRIGHTNESS_PATH "/brightness"
@@ -23,8 +25,8 @@ typedef enum {
 } backlight_field;
 
 struct brightness {
-	int lux[5];
-	int value[5];
+	int lux[MCE_BUTTON_BACKLIGHT_BRIGHTNESS_VALUES];
+	int value[MCE_BUTTON_BACKLIGHT_BRIGHTNESS_VALUES];
 };
 
 struct button_backlight{
@@ -38,9 +40,4 @@ struct button_backlight{
 	const struct brightness *brightness_map;
 };
 
-/* format: { {series of 5 points in mlux}, {5 corresponding brightness values} } */
-static const struct brightness brightness_map_kbd = { {25, 250000, 1750000, 15000000, 30000000}, {80, 128, 0, 0, 0} };
-static const struct brightness brightness_map_btn = { {25, 250000, 1750000, 15000000, 30000000}, {1, 1, 0, 0, 0} };
-
-
 #endif