Symbol: CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN
drivers/media/cec/core/cec-adap.c
1069
[CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN] = 2 | BOTH,
include/uapi/linux/cec-funcs.h
1170
msg->msg[1] = CEC_MSG_VENDOR_REMOTE_BUTTON_DOWN;