WM8776_DACMUTE
wm8776_write(chip, WM8776_DACMUTE, chip->dac_mute ? WM8776_DMUTE : 0);
wm8776_write_cached(chip, WM8776_DACMUTE,
return snd_soc_component_write(component, WM8776_DACMUTE, !!mute);