pm3fb_shift_bpp
par->base = pm3fb_shift_bpp(bpp, (info->var.yoffset * xres)
par->base = pm3fb_shift_bpp(info->var.bits_per_pixel,
pm3fb_shift_bpp(bpp, htotal - 1));
pm3fb_shift_bpp(bpp, hsend));
pm3fb_shift_bpp(bpp, hsstart));
pm3fb_shift_bpp(bpp, hbend));
pm3fb_shift_bpp(bpp, hbend));
pm3fb_shift_bpp(bpp, width));