/* There are a maximum of 32 gpios in each gpio controller.  */
static struct ppc4xx_gpio_chip* to_ppc4xx_gpiochip(struct of_mm_gpio_chip *mm_gc)
/* There are a maximum of 32 gpios in each gpio controller.  */
static struct ppc4xx_gpio_chip* to_ppc4xx_gpiochip(struct of_mm_gpio_chip *mm_gc)
{
	return container_of(mm_gc, struct ppc4xx_gpio_chip, mm_gc);
}