WM8350_SECURITY
ret = wm8350_reg_write(wm8350, WM8350_SECURITY, WM8350_LOCK_KEY);
ret = wm8350_reg_write(wm8350, WM8350_SECURITY, WM8350_UNLOCK_KEY);
snd_soc_component_write(component, WM8350_SECURITY, 0xa7);
snd_soc_component_write(component, WM8350_SECURITY, 0);