int s3cfb_extdsp_check_var(struct fb_var_screeninfo *var, struct fb_info *fb)
{
	struct s3cfb_extdsp_global *fbdev = get_extdsp_global(0);

	s3cfb_extdsp_check_var_window(fbdev, var, fb);

	return 0;
}
int s3cfb_extdsp_register_framebuffer(struct s3cfb_extdsp_global *fbdev)
{
	int ret;

	/* on registering framebuffer, framebuffer of default window is registered at first. */
	ret = register_framebuffer(fbdev->fb[0]);
	if (ret) {
		dev_err(fbdev->dev, "failed to register	\
				framebuffer device\n");
		return -EINVAL;
	}
#ifndef CONFIG_FRAMEBUFFER_CONSOLE
	s3cfb_extdsp_check_var_window(fbdev, &fbdev->fb[0]->var,
			fbdev->fb[0]);
	s3cfb_extdsp_set_par_window(fbdev, fbdev->fb[0]);
#endif
	return 0;
}