/** Called before subdevices are set up */
int (*pre_init)(struct wm831x *wm831x);
/** Called after subdevices are set up */
int (*post_init)(struct wm831x *wm831x);
/** Called before subdevices are set up */
int (*pre_init)(struct wm831x *wm831x);
/** Called after subdevices are set up */
int (*post_init)(struct wm831x *wm831x);