Symbol: drm_edp_backlight_set_enable
drivers/gpu/drm/display/drm_dp_helper.c
4284
ret = drm_edp_backlight_set_enable(aux, bl, true);
drivers/gpu/drm/display/drm_dp_helper.c
4311
ret = drm_edp_backlight_set_enable(aux, bl, false);