WM8940_COMPANDINGCTL
WM8940_COMPANDINGCTL, 1, wm8940_companding);
WM8940_COMPANDINGCTL, 3, wm8940_companding);
SOC_SINGLE("Digital Loopback Switch", WM8940_COMPANDINGCTL,
WM8940_COMPANDINGCTL) & 0xFFDF;
ret = snd_soc_component_write(component, WM8940_COMPANDINGCTL, companding);
case WM8940_COMPANDINGCTL: