drm_atomic_helper_duplicate_state
EXPORT_SYMBOL(drm_atomic_helper_duplicate_state);
state = drm_atomic_helper_duplicate_state(dev, &ctx);
state = drm_atomic_helper_duplicate_state(display->drm, ctx);
disp_state->atomic_state = drm_atomic_helper_duplicate_state(ddev,
drm_atomic_helper_duplicate_state(struct drm_device *dev,