CEC_HW_CONTROL_REG
CEC_WRITE(sc, CEC_HW_CONTROL_REG, 0);
val = CEC_READ(sc, CEC_HW_CONTROL_REG);
CEC_WRITE(sc, CEC_HW_CONTROL_REG, 0);
CEC_WRITE(sc, CEC_HW_CONTROL_REG, val);
CEC_WRITE(sc, CEC_HW_CONTROL_REG, CEC_HW_CONTROL_TX_RX_MODE);
CEC_WRITE(sc, CEC_HW_CONTROL_REG, 0);
val = CEC_READ(sc, CEC_HW_CONTROL_REG);
CEC_SET_CLEAR(sc, CEC_HW_CONTROL_REG,