to_const_tegra_plane_state
old_tegra_state = to_const_tegra_plane_state(old_plane_state);
new_tegra_state = to_const_tegra_plane_state(plane->state);
tegra_state = to_const_tegra_plane_state(plane_state);
tegra_state = to_const_tegra_plane_state(plane_state);