plane_to_sun4i_layer
struct sun4i_layer *layer = plane_to_sun4i_layer(state->plane);
struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
struct sun4i_layer *layer = plane_to_sun4i_layer(plane);