WM8978_AUDIO_INTERFACE
u16 iface = snd_soc_component_read(component, WM8978_AUDIO_INTERFACE) & ~0x198;
snd_soc_component_write(component, WM8978_AUDIO_INTERFACE, iface);
u16 iface_ctl = snd_soc_component_read(component, WM8978_AUDIO_INTERFACE) & ~0x60;
snd_soc_component_write(component, WM8978_AUDIO_INTERFACE, iface_ctl);