drm_atomic_get_old_crtc_state
to_dm_crtc_state(drm_atomic_get_old_crtc_state(state, pcrtc));
old_crtc_state = drm_atomic_get_old_crtc_state(state, &acrtc->base);
old_crtc_state = drm_atomic_get_old_crtc_state(
old_crtc_state = drm_atomic_get_old_crtc_state(old_state, old_conn_state->crtc);
old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
return to_intel_crtc_state(drm_atomic_get_old_crtc_state(&state->base,