AD1843_DAC2_MUTE
case AD1843_DAC2_MUTE:
reg = AD1843_DAC2_TO_MIXER + mc->dev - AD1843_DAC2_MUTE;
case AD1843_DAC2_MUTE:
reg = AD1843_DAC2_TO_MIXER + mc->dev - AD1843_DAC2_MUTE;
di->next = di->index + AD1843_DAC2_MUTE - AD1843_DAC2_GAIN;
case AD1843_DAC2_MUTE:
di->prev = di->index + AD1843_DAC2_GAIN - AD1843_DAC2_MUTE;