intel_atomic_get_old_global_obj_state
bw_state = intel_atomic_get_old_global_obj_state(state, &display->bw.obj);
to_intel_cdclk_state(intel_atomic_get_old_global_obj_state(state, &to_intel_display(state)->cdclk.obj))
dbuf_bw_state = intel_atomic_get_old_global_obj_state(state, &display->dbuf_bw.obj);
intel_atomic_get_old_global_obj_state(struct intel_atomic_state *state,
intel_atomic_get_old_global_obj_state(state,
to_intel_dbuf_state(intel_atomic_get_old_global_obj_state(state, &to_intel_display(state)->dbuf.obj))