CRTC_STATE_VBLANK
tg->funcs->wait_for_state(tg, CRTC_STATE_VBLANK);
case CRTC_STATE_VBLANK:
case CRTC_STATE_VBLANK:
case CRTC_STATE_VBLANK:
tg->funcs->wait_for_state(tg, CRTC_STATE_VBLANK);
case CRTC_STATE_VBLANK: