__drm_atomic_helper_crtc_duplicate_state
__drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
EXPORT_SYMBOL(__drm_atomic_helper_crtc_duplicate_state);
__drm_atomic_helper_crtc_duplicate_state(crtc, state);
__drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->uapi);
void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,