omapfb_bitblt
omapfb_bitblt(sc, xs, y, xd, y, width, height, 12);
omapfb_bitblt(sc, x, ys, x, yd, width, height, 12);
static void omapfb_bitblt(struct omapfb_softc *, int, int, int, int, int,
omapfb_bitblt(sc, 100, 100, 400, 100, 200, 200, 0);