SP_RIGHT_INPUT_CONTROL
r = ce4231_read(sc, SP_RIGHT_INPUT_CONTROL) & INPUT_GAIN_MASK;
ce4231_write(sc, SP_RIGHT_INPUT_CONTROL, r);
r = ce4231_read(sc, SP_RIGHT_INPUT_CONTROL) & INPUT_SOURCE_MASK;
ce4231_write(sc, SP_RIGHT_INPUT_CONTROL, r);
r = ce4231_read(sc, SP_RIGHT_INPUT_CONTROL) &
ce4231_write(sc, SP_RIGHT_INPUT_CONTROL, r);
(ce4231_read(sc, SP_RIGHT_INPUT_CONTROL) &
reg = ad_read(sc, SP_RIGHT_INPUT_CONTROL);
ad_write(sc, SP_RIGHT_INPUT_CONTROL, (inp | reg));
reg = ad_read(sc, SP_RIGHT_INPUT_CONTROL);
ad_write(sc, SP_RIGHT_INPUT_CONTROL, (gain & 0x0f) | reg);
rm = cs4231_read(sc, SP_RIGHT_INPUT_CONTROL);
cs4231_write(sc, SP_RIGHT_INPUT_CONTROL, rm);