FB_AUX_TEXT_SVGA_MASK
int colstride = 1 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK);
int colstride = 2 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK);
int colstride = 2 << (info->fix.type_aux & FB_AUX_TEXT_SVGA_MASK);