BTN_9
case 0xff09: asus_map_key_clear(BTN_9); break;
case 0xff09: ch_map_key_clear(BTN_9); break;
[BTN_8] = "Btn8", [BTN_9] = "Btn9",
input_report_key(input, BTN_9, (data[10] & 0x02));
input_report_key(dev, BTN_9, data[1] & 0x02);
input_dev->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_9);