BTN_GEAR_DOWN
[BTN_GEAR_DOWN] = "BtnGearDown", [BTN_GEAR_UP] = "BtnGearUp",
{ BTN_GEAR_DOWN, BTN_GEAR_UP, BTN_BASE, BTN_BASE2, BTN_BASE3,
input_report_key(w->input_dev, BTN_GEAR_DOWN, val5 > 0);
w->input_dev->keybit[BIT_WORD(BTN_GEAR_DOWN)] = BIT_MASK(BTN_GEAR_DOWN);