key BUTTON_1 {
    base:                               fallback DPAD_UP
    fn:                                 fallback VOLUME_UP
}

key BUTTON_2 {
    base:                               fallback DPAD_LEFT
    fn:                                 fallback BRIGHTNESS_DOWN
}

key BUTTON_3 {
    base:                               fallback DPAD_RIGHT
    fn:                                 fallback BRIGHTNESS_UP
}

key BUTTON_4 {
    base:                               fallback DPAD_DOWN
    fn:                                 fallback VOLUME_DOWN
}