Add in buttonlight brightness setting for the Gigabeat, and setup the framework for future players that have adjustable button light brightness settings. Also fixed a bug in the backlight code when the brightness was set to 0.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13356 a1c6a512-1295-4272-9138-f99709370657

apps/lang/english.lang

@@ -10775,6 +10775,23 @@
     gigabeatf: "Button Light Timeout"
   </voice>
 </phrase>
+<phrase>
+  id: LANG_BUTTONLIGHT_BRIGHTNESS
+  desc: in settings_menu
+  user:
+  <source>
+    *: ""
+    gigabeatf: "Button Light Brightness"
+  </source>
+  <dest>
+    *: ""
+    gigabeatf: "Button Light Brightness"
+  </dest>
+  <voice>
+    *: ""
+    gigabeatf: "Button Light Brightness"
+  </voice>
+</phrase>
 <phrase>
   id: LANG_PLAYLISTVIEWER_SETTINGS
   desc: title for the playlist viewer settings menus

apps/menus/settings_menu.c

@@ -323,6 +323,10 @@ MENUITEM_SETTING(start_screen, &global_settings.start_in_screen, NULL);
 MENUITEM_SETTING(button_light_timeout, &global_settings.button_light_timeout, NULL);
 #endif
 
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+MENUITEM_SETTING(buttonlight_brightness, &global_settings.buttonlight_brightness, NULL);
+#endif
+
 MAKE_MENU(system_menu, ID2P(LANG_SYSTEM), 
           0, Icon_System_menu,
             &start_screen,
@@ -351,6 +355,9 @@ MAKE_MENU(system_menu, ID2P(LANG_SYSTEM),
 #endif
 #ifdef HAVE_BUTTON_LIGHT
             &button_light_timeout,
+#endif
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+            &buttonlight_brightness
 #endif
          );
 

apps/settings.c

@@ -713,6 +713,9 @@ void settings_apply(void)
 #ifdef HAVE_BUTTON_LIGHT
     button_backlight_set_timeout(global_settings.button_light_timeout);
 #endif
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+    buttonlight_set_brightness(global_settings.buttonlight_brightness);
+#endif
 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
     backlight_set_brightness(global_settings.brightness);
 #endif

apps/settings.h

@@ -720,6 +720,9 @@ struct user_settings
 #ifdef HAVE_BUTTON_LIGHT
     int button_light_timeout;
 #endif
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+    int buttonlight_brightness;
+#endif
 };
 
 /** global variables **/

apps/settings_list.c

@@ -1183,6 +1183,11 @@ const struct settings_list settings[] = {
         0, 18, 1, backlight_formatter, backlight_getlang, 
         button_backlight_set_timeout),
 #endif
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+    INT_SETTING(0, buttonlight_brightness, LANG_BUTTONLIGHT_BRIGHTNESS, DEFAULT_BRIGHTNESS_SETTING,
+        "button light brightness",UNIT_INT, MIN_BRIGHTNESS_SETTING, MAX_BRIGHTNESS_SETTING, 1,
+        NULL, NULL, buttonlight_set_brightness),
+#endif
 };
 
 const int nb_settings = sizeof(settings)/sizeof(*settings);

firmware/backlight.c

@@ -58,6 +58,14 @@ static inline void __backlight_set_brightness(int val)
     (void)val;
 }
 #endif
+
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+static inline void __buttonlight_set_brightness(int val)
+{
+    (void)val;
+}
+#endif
+
 #endif /* SIMULATOR */
 
 #if defined(HAVE_BACKLIGHT) && !defined(BOOTLOADER)
@@ -846,6 +854,18 @@ void backlight_set_brightness(int val)
 }
 #endif /* HAVE_BACKLIGHT_BRIGHTNESS */
 
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+void buttonlight_set_brightness(int val)
+{
+    if (val < MIN_BRIGHTNESS_SETTING)
+        val = MIN_BRIGHTNESS_SETTING;
+    else if (val > MAX_BRIGHTNESS_SETTING)
+        val = MAX_BRIGHTNESS_SETTING;
+
+    __buttonlight_set_brightness(val);
+}
+#endif /* HAVE_BUTTONLIGHT_BRIGHTNESS */
+
 #else /* !defined(HAVE_BACKLIGHT) || defined(BOOTLOADER)
     -- no backlight, empty dummy functions */
 
@@ -871,4 +891,7 @@ bool is_remote_backlight_on(void) {return true;}
 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
 void backlight_set_brightness(int val) { (void)val; }
 #endif
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+void buttonlight_set_brightness(int val) { (void)val; }
+#endif
 #endif /* defined(HAVE_BACKLIGHT) && !defined(BOOTLOADER) */

firmware/export/backlight.h

@@ -80,6 +80,10 @@ void sim_remote_backlight(int value);
 void backlight_set_brightness(int val);
 #endif /* HAVE_BACKLIGHT_BRIGHTNESS */
 
+#ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
+void buttonlight_set_brightness(int val);
+#endif /* HAVE_BUTTONLIGHT_BRIGHTNESS */
+
 #ifdef HAVE_BUTTON_LIGHT
 void button_backlight_on(void);
 void button_backlight_off(void);

firmware/export/config-gigabeat.h

@@ -49,6 +49,8 @@
 
 #define HAVE_BACKLIGHT_BRIGHTNESS
 
+#define HAVE_BUTTONLIGHT_BRIGHTNESS
+
 /* Main LCD backlight brightness range and defaults */
 #define MIN_BRIGHTNESS_SETTING          0   /* 0.5 mA */
 #define MAX_DIM_BRIGHTNESS_SETTING      15  /* highest 'dimness' */

firmware/target/arm/s3c2440/gigabeat-fx/backlight-meg-fx.c

@@ -31,6 +31,7 @@
 
 static void led_control_service(void);
 static unsigned short backlight_brightness;
+static unsigned short buttonlight_brightness;
 static unsigned short backlight_target;
 static unsigned short buttonlight_target;
 
@@ -57,6 +58,7 @@ enum buttonlight_states
     BUTTONLIGHT_CONTROL_IDLE,
     BUTTONLIGHT_CONTROL_OFF,
     BUTTONLIGHT_CONTROL_ON,
+    BUTTONLIGHT_CONTROL_SET,
     BUTTONLIGHT_CONTROL_FADE,
 } buttonlight_control;
 
@@ -214,10 +216,15 @@ static void led_control_service(void)
                 break;
             case BUTTONLIGHT_CONTROL_ON:
                 sc606_changed=true;
-                sc606regBval=sc606regCval=backlight_brightness;
+                sc606regBval=sc606regCval=buttonlight_brightness;
                 sc606regCONFval |= 0x3C;
                 buttonlight_control=BUTTONLIGHT_CONTROL_IDLE;
                 break;
+            case BUTTONLIGHT_CONTROL_SET:
+                sc606regBval=sc606regCval=buttonlight_brightness;
+                sc606_changed=true;
+                buttonlight_control = BUTTONLIGHT_CONTROL_ON;
+                break;
             case BUTTONLIGHT_CONTROL_FADE:
                 /* Was this mode set while the button light is already on/off? */
                 if(buttonlight_target==sc606regBval)
@@ -288,15 +295,21 @@ static void led_control_service(void)
 void __button_backlight_on(void)
 {
     buttonlight_control = BUTTONLIGHT_CONTROL_IDLE;
-    buttonlight_target = backlight_brightness;
+    buttonlight_target = buttonlight_brightness;
-    buttonlight_control = BUTTONLIGHT_CONTROL_FADE;
+    if(buttonlight_brightness==0)
+        buttonlight_control = BUTTONLIGHT_CONTROL_ON;
+    else
+        buttonlight_control = BUTTONLIGHT_CONTROL_FADE;
 }
 
 void __button_backlight_off(void)
 {
     buttonlight_control = BUTTONLIGHT_CONTROL_IDLE;
     buttonlight_target = 0;
-    buttonlight_control = BUTTONLIGHT_CONTROL_FADE;
+    if(buttonlight_brightness==0)
+        buttonlight_control = BUTTONLIGHT_CONTROL_OFF;
+    else
+        buttonlight_control = BUTTONLIGHT_CONTROL_FADE;
 }
 
 void __backlight_dim(bool dim_now)
@@ -304,5 +317,21 @@ void __backlight_dim(bool dim_now)
     /* dont let the interrupt tick happen */
     backlight_control = BACKLIGHT_CONTROL_IDLE;
     backlight_target = (dim_now == true) ? 0 : backlight_brightness;
-    backlight_control = BACKLIGHT_CONTROL_FADE;
+    if(backlight_target==0 && backlight_brightness==0)
+    {
+        if(dim_now == false)
+            backlight_control = BACKLIGHT_CONTROL_ON;
+        else
+            backlight_control = BACKLIGHT_CONTROL_OFF;
+    }
+    else
+        backlight_control = BACKLIGHT_CONTROL_FADE;
+}
+
+void __buttonlight_set_brightness(int brightness)
+{
+    /* stop the interrupt from messing us up */
+    buttonlight_control = BUTTONLIGHT_CONTROL_IDLE;
+    buttonlight_brightness = brightness;
+    buttonlight_control = BUTTONLIGHT_CONTROL_SET;
 }