winbpp
var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
bpp = winbpp(val) / 8;
bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
bpp = winbpp(win->w[plane].mode_winctrl1);
fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);