/**
 * omap_pmic_of_setup_gpios() - Setup GPIO array if needed.
 * @dev:    device to pick up the gpios from
 */
static int omap_pmic_of_setup_gpios(struct device *dev)
{
    struct device_node *node = dev->of_node;
    int num_gpios, i, ret;

    num_gpios = of_gpio_count(node);
    if (num_gpios < 0)
        return 0;

    for (i = 0; i < num_gpios; i++) {
        int gpio;
        enum of_gpio_flags flags;

        gpio = of_get_gpio_flags(node, i, &flags);
        if (!gpio_is_valid(gpio)) {
            dev_err(dev, "Invalid GPIO[%d]: %d\n", i, gpio);
            return -EINVAL;
        }

        ret = devm_gpio_request(dev, gpio, dev_name(dev));
        if (ret) {
            dev_err(dev, "Unable to get GPIO %d (%d)\n", gpio, ret);
            return ret;
        }
        ret = gpio_direction_output(gpio,
                        !!(flags & OF_GPIO_ACTIVE_LOW));
        if (ret) {
            dev_err(dev, "Failed to set GPIO %d (%d)\n", gpio, ret);
            return ret;
        }
        dev_dbg(dev, "GPIO=%d set_to=%d\n", gpio,
            !!(flags & OF_GPIO_ACTIVE_LOW));
    }

    return 0;
}