MCIR2_KEYBOARD_NBITS
data->wanted_bits = MCIR2_KEYBOARD_NBITS;
case MCIR2_KEYBOARD_NBITS:
((u64)MCIR2_KEYBOARD_HEADER << MCIR2_KEYBOARD_NBITS);
len = MCIR2_KEYBOARD_NBITS + MCIR2_HEADER_NBITS;