WM8711_IFACE
u16 iface = snd_soc_component_read(component, WM8711_IFACE) & 0xfff3;
snd_soc_component_write(component, WM8711_IFACE, iface);
u16 iface = snd_soc_component_read(component, WM8711_IFACE) & 0x000c;
snd_soc_component_write(component, WM8711_IFACE, iface);