WM8750_ADCDAC
SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
u16 mute_reg = snd_soc_component_read(component, WM8750_ADCDAC) & 0xfff7;
snd_soc_component_write(component, WM8750_ADCDAC, mute_reg | 0x8);
snd_soc_component_write(component, WM8750_ADCDAC, mute_reg);