state_to_sun4i_layer_state
struct sun4i_layer_state *p_state = state_to_sun4i_layer_state(state);
state_to_sun4i_layer_state(plane_state);
struct sun4i_layer_state *s_state = state_to_sun4i_layer_state(p_state);
state = state_to_sun4i_layer_state(plane->state);
struct sun4i_layer_state *orig = state_to_sun4i_layer_state(plane->state);
struct sun4i_layer_state *s_state = state_to_sun4i_layer_state(state);
struct sun4i_layer_state *layer_state = state_to_sun4i_layer_state(old_state);
struct sun4i_layer_state *layer_state = state_to_sun4i_layer_state(new_state);