WM8940_IFACE
u16 iface = snd_soc_component_read(component, WM8940_IFACE) & 0xFE67;
snd_soc_component_write(component, WM8940_IFACE, iface);
u16 iface = snd_soc_component_read(component, WM8940_IFACE) & 0xFD9F;
ret = snd_soc_component_write(component, WM8940_IFACE, iface);
case WM8940_IFACE: