drm_edp_backlight_init
ret = drm_edp_backlight_init(&sc->sc_aux, &sc->sc_bl, 0, 0,
EXPORT_SYMBOL(drm_edp_backlight_init);
ret = drm_edp_backlight_init(aux, &bl->info, 0, 0, edp_dpcd,
ret = drm_edp_backlight_init(&intel_dp->aux, &panel->backlight.edp.vesa.info,
drm_edp_backlight_init(struct drm_dp_aux *aux, struct drm_edp_backlight_info *bl,