WM8753_PCM
snd_soc_component_write(component, WM8753_PCM, voice);
u16 voice = snd_soc_component_read(component, WM8753_PCM) & 0x01ec;
snd_soc_component_write(component, WM8753_PCM, voice);
u16 voice = snd_soc_component_read(component, WM8753_PCM) & 0x01f3;
snd_soc_component_write(component, WM8753_PCM, voice);
voice = snd_soc_component_read(component, WM8753_PCM) & 0x011f;