Add brightness setting

multirom.c

@@ -28,6 +28,9 @@
 #define LAYOUT_VERSION "/data/.layout_version"
 #define SECOND_BOOT_KMESG "MultiromSaysNextBootShouldBeSecondMagic108"
 
+#define BATTERY_CAP "/sys/class/power_supply/battery/capacity"
+#define BRIGHTNESS_FILE "/sys/devices/platform/pwm-backlight/backlight/pwm-backlight/brightness"
+
 #define T_FOLDER 4
 
 static char multirom_dir[64] = { 0 };
@@ -265,6 +268,7 @@ int multirom_default_status(struct multirom_status *s)
     s->current_rom = NULL;
     s->roms = NULL;
     s->colors = 0;
+    s->brightness = 40;
 
     char roms_path[256];
     sprintf(roms_path, "%s/roms/"INTERNAL_ROM_NAME, multirom_dir);
@@ -396,6 +400,8 @@ int multirom_load_status(struct multirom_status *s)
             s->curr_rom_part = strdup(arg);
         else if(strstr(name, "colors"))
             s->colors = atoi(arg);
+        else if(strstr(name, "brightness"))
+            s->brightness = atoi(arg);
     }
 
     fclose(f);
@@ -460,6 +466,7 @@ int multirom_save_status(struct multirom_status *s)
     fprintf(f, "auto_boot_rom=%s\n", s->auto_boot_rom ? s->auto_boot_rom->name : "");
     fprintf(f, "curr_rom_part=%s\n", s->curr_rom_part ? s->curr_rom_part : "");
     fprintf(f, "colors=%d\n", s->colors);
+    fprintf(f, "brightness=%d\n", s->brightness);
 
     fclose(f);
     return 0;
@@ -481,6 +488,7 @@ void multirom_find_usb_roms(struct multirom_status *s)
 
     char path[256];
     struct usb_partition *p;
+
     pthread_mutex_lock(&parts_mutex);
     for(i = 0; s->partitions && s->partitions[i]; ++i)
         if(!strstr(s->partitions[i]->name, "mmcblk"))
@@ -693,6 +701,8 @@ void multirom_dump_status(struct multirom_status *s)
     fb_debug("Dumping multirom status:\n");
     fb_debug("  is_second_boot=%d\n", s->is_second_boot);
     fb_debug("  current_rom=%s\n", s->current_rom ? s->current_rom->name : "NULL");
+    fb_debug("  colors=%d\n", s->colors);
+    fb_debug("  brightness=%d\n", s->brightness);
     fb_debug("  auto_boot_seconds=%d\n", s->auto_boot_seconds);
     fb_debug("  auto_boot_rom=%s\n", s->auto_boot_rom ? s->auto_boot_rom->name : "NULL");
     fb_debug("  curr_rom_part=%s\n", s->curr_rom_part ? s->curr_rom_part : "NULL");
@@ -1938,7 +1948,6 @@ int multirom_search_last_kmsg(const char *expr)
     return res;
 }
 
-#define BATTERY_CAP "/sys/class/power_supply/battery/capacity"
 int multirom_get_battery(void)
 {
     char buff[4];
@@ -1952,3 +1961,15 @@ int multirom_get_battery(void)
 
     return atoi(buff);
 }
+
+void multirom_set_brightness(int val)
+{
+    FILE *f = fopen(BRIGHTNESS_FILE, "w");
+    if(!f)
+    {
+        ERROR("Failed to set brightness: %s!\n", strerror(errno));
+        return;
+    }
+    fprintf(f, "%d", val);
+    fclose(f);
+}

multirom.h

@@ -72,6 +72,7 @@ struct multirom_status
     int is_second_boot;
     int auto_boot_seconds;
     int colors;
+    int brightness;
     struct multirom_rom *auto_boot_rom;
     struct multirom_rom *current_rom;
     struct multirom_rom **roms;
@@ -128,5 +129,6 @@ int multirom_replace_aliases_cmdline(char **s, struct rom_info *i, struct multir
 int multirom_replace_aliases_root_path(char **s, struct multirom_rom *rom);
 char *multirom_get_klog(void);
 int multirom_get_battery(void);
+void multirom_set_brightness(int val);
 
 #endif

multirom_ui.c

@@ -93,6 +93,8 @@ int multirom_ui(struct multirom_status *s, struct multirom_rom **to_boot)
     add_touch_handler(&multirom_ui_touch_handler, NULL);
     start_input_thread();
 
+    multirom_set_brightness(s->brightness);
+
     fb_freeze(0);
 
     if(s->auto_boot_rom && s->auto_boot_seconds > 0)