linux-imx

int of_led_classdev_register(struct device *parent, struct device_node *np,

                struct led_classdev *led_cdev)

{

    char name[LED_MAX_NAME_SIZE];

    int ret;

​

    ret = led_classdev_next_name(led_cdev->name, name, sizeof(name));

    if (ret < 0)

        return ret;

​

    led_cdev->dev = device_create_with_groups(leds_class, parent, 0,

                led_cdev, led_cdev->groups, "%s", name);

        return PTR_ERR(led_cdev->dev);

    led_cdev->dev->of_node = np;

​

    if (ret)

        dev_warn(parent, "Led %s renamed to %s due to name collision",

                led_cdev->name, dev_name(led_cdev->dev));

​

    if (led_cdev->flags & LED_BRIGHT_HW_CHANGED) {

        ret = led_add_brightness_hw_changed(led_cdev);

        if (ret) {

            device_unregister(led_cdev->dev);

            return ret;

        }

    }

​

    led_cdev->work_flags = 0;

#ifdef CONFIG_LEDS_TRIGGERS

    init_rwsem(&led_cdev->trigger_lock);

#endif

#ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED

    led_cdev->brightness_hw_changed = -1;

#endif

    /* add to the list of leds */

    down_write(&leds_list_lock);

    list_add_tail(&led_cdev->node, &leds_list);

    up_write(&leds_list_lock);

​

    if (!led_cdev->max_brightness)

        led_cdev->max_brightness = LED_FULL;

​

    led_update_brightness(led_cdev);

​

    led_init_core(led_cdev);

​

#ifdef CONFIG_LEDS_TRIGGERS

    led_trigger_set_default(led_cdev);

#endif

​

    dev_dbg(parent, "Registered led device: %s\n",

            led_cdev->name);

​

    return 0;

}

EXPORT_SYMBOL_GPL(of_led_classdev_register);

​

/**

 * led_classdev_unregister - unregisters a object of led_properties class.

 * @led_cdev: the led device to unregister