u8 flags;
 };
 
+static const struct apple_key_translation macbookair_fn_keys[] = {
+       { KEY_BACKSPACE, KEY_DELETE },
+       { KEY_ENTER,    KEY_INSERT },
+       { KEY_F1,       KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
+       { KEY_F2,       KEY_BRIGHTNESSUP,   APPLE_FLAG_FKEY },
+       { KEY_F3,       KEY_SCALE,          APPLE_FLAG_FKEY },
+       { KEY_F4,       KEY_DASHBOARD,      APPLE_FLAG_FKEY },
+       { KEY_F6,       KEY_PREVIOUSSONG,   APPLE_FLAG_FKEY },
+       { KEY_F7,       KEY_PLAYPAUSE,      APPLE_FLAG_FKEY },
+       { KEY_F8,       KEY_NEXTSONG,       APPLE_FLAG_FKEY },
+       { KEY_F9,       KEY_MUTE,           APPLE_FLAG_FKEY },
+       { KEY_F10,      KEY_VOLUMEDOWN,     APPLE_FLAG_FKEY },
+       { KEY_F11,      KEY_VOLUMEUP,       APPLE_FLAG_FKEY },
+       { KEY_F12,      KEY_EJECTCD,        APPLE_FLAG_FKEY },
+       { KEY_UP,       KEY_PAGEUP },
+       { KEY_DOWN,     KEY_PAGEDOWN },
+       { KEY_LEFT,     KEY_HOME },
+       { KEY_RIGHT,    KEY_END },
+       { }
+};
+
 static const struct apple_key_translation apple_fn_keys[] = {
        { KEY_BACKSPACE, KEY_DELETE },
        { KEY_ENTER,    KEY_INSERT },
        if (fnmode) {
                int do_translate;
 
-               trans = apple_find_translation((hid->product < 0x21d ||
-                                       hid->product >= 0x300) ?
-                                       powerbook_fn_keys : apple_fn_keys,
-                                       usage->code);
+               if(hid->product >= USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI &&
+                               hid->product <= USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) {
+                       trans = apple_find_translation(macbookair_fn_keys, usage->code);
+               } else if (hid->product < 0x21d || hid->product >= 0x300) {
+                       trans = apple_find_translation(powerbook_fn_keys, usage->code);
+               } else {
+                       trans = apple_find_translation(apple_fn_keys, usage->code);
+               }
+
                if (trans) {
                        if (test_bit(usage->code, asc->pressed_fn))
                                do_translate = 1;
                .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS),
                .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI),
+               .driver_data = APPLE_HAS_FN },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO),
+               .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS),
+               .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI),
+               .driver_data = APPLE_HAS_FN },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO),
+               .driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS),
+               .driver_data = APPLE_HAS_FN | APPLE_RDESC_JIS },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
                .driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
 
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
        { }