Symbol: CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST
drivers/media/cec/core/cec-adap.c
1089
[CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST] = 2 | DIRECTED,
include/uapi/linux/cec-funcs.h
1467
msg->msg[1] = CEC_MSG_SYSTEM_AUDIO_MODE_REQUEST;