ffb_blank
static int ffb_blank(struct ffb_softc *, u_long, u_int *);
ffb_blank(sc, WSDISPLAYIO_SVIDEO, &blank);
return ffb_blank(sc, cmd == FBIOGVIDEO?
return(ffb_blank(sc, cmd, (u_int *)data));
ffb_blank(sc, WSDISPLAYIO_SVIDEO, &on);