Symbol: CEC_MSG_TUNER_STEP_DECREMENT
drivers/media/cec/core/cec-adap.c
1063
[CEC_MSG_TUNER_STEP_DECREMENT] = 2 | DIRECTED,
include/uapi/linux/cec-funcs.h
1081
msg->msg[1] = CEC_MSG_TUNER_STEP_DECREMENT;