gpio: tegra186: Add support for pin ranges

	unsigned int pins;

};

struct tegra186_pin_range {

	unsigned int offset;

	const char *group;

};

struct tegra_gpio_soc {

	const struct tegra_gpio_port *ports;

	unsigned int num_ports;

	const char *name;

	unsigned int instance;

	const struct tegra186_pin_range *pin_ranges;

	unsigned int num_pin_ranges;

	const char *pinmux;

};

struct tegra_gpio {

	return 0;

}

static int tegra186_gpio_add_pin_ranges(struct gpio_chip *chip)

{

	struct tegra_gpio *gpio = gpiochip_get_data(chip);

	struct pinctrl_dev *pctldev;

	struct device_node *np;

	unsigned int i, j;

	int err;

	if (!gpio->soc->pinmux || gpio->soc->num_pin_ranges == 0)

		return 0;

	np = of_find_compatible_node(NULL, NULL, gpio->soc->pinmux);

	if (!np)

		return -ENODEV;

	pctldev = of_pinctrl_get(np);

	of_node_put(np);

	if (!pctldev)

		return -EPROBE_DEFER;

	for (i = 0; i < gpio->soc->num_pin_ranges; i++) {

		unsigned int pin = gpio->soc->pin_ranges[i].offset, port;

		const char *group = gpio->soc->pin_ranges[i].group;

		port = pin / 8;

		pin = pin % 8;

		if (port >= gpio->soc->num_ports) {

			dev_warn(chip->parent, "invalid port %u for %s\n",

				 port, group);

			continue;

		}

		for (j = 0; j < port; j++)

			pin += gpio->soc->ports[j].pins;

		err = gpiochip_add_pingroup_range(chip, pctldev, pin, group);

		if (err < 0)

			return err;

	}

	return 0;

}

static int tegra186_gpio_of_xlate(struct gpio_chip *chip,

				  const struct of_phandle_args *spec,

				  u32 *flags)

	gpio->gpio.label = gpio->soc->name;

	gpio->gpio.parent = &pdev->dev;

	gpio->gpio.request = gpiochip_generic_request;

	gpio->gpio.free = gpiochip_generic_free;

	gpio->gpio.get_direction = tegra186_gpio_get_direction;

	gpio->gpio.direction_input = tegra186_gpio_direction_input;

	gpio->gpio.direction_output = tegra186_gpio_direction_output;

	gpio->gpio.get = tegra186_gpio_get,

	gpio->gpio.set = tegra186_gpio_set;

	gpio->gpio.set_config = tegra186_gpio_set_config;

	gpio->gpio.add_pin_ranges = tegra186_gpio_add_pin_ranges;

	gpio->gpio.base = -1;