ESO_MIXREG_LMVM_MUTE
(mv & ~ESO_MIXREG_LMVM_MUTE) << 2;
(sc->sc_mvmute ? ESO_MIXREG_LMVM_MUTE : 0x00));
ESO_MIXREG_LMVM_MUTE);
~ESO_MIXREG_LMVM_MUTE);
ESO_MIXREG_LMVM_MUTE);
~ESO_MIXREG_LMVM_MUTE);