drm_helper_crtc_in_use
EXPORT_SYMBOL(drm_helper_crtc_in_use);
crtc->enabled = drm_helper_crtc_in_use(crtc);
crtc->enabled = drm_helper_crtc_in_use(crtc);
if (drm_helper_crtc_in_use(set->crtc)) {
bool drm_helper_crtc_in_use(struct drm_crtc *crtc);