diff options
Diffstat (limited to 'drivers/leds/led-class.c')
| -rw-r--r-- | drivers/leds/led-class.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 0292df4101b..b0b5d05fadd 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -54,6 +54,9 @@ static ssize_t led_brightness_store(struct class_device *dev, static CLASS_DEVICE_ATTR(brightness, 0644, led_brightness_show, led_brightness_store); +#ifdef CONFIG_LEDS_TRIGGERS +static CLASS_DEVICE_ATTR(trigger, 0644, led_trigger_show, led_trigger_store); +#endif /** * led_classdev_suspend - suspend an led_classdev. @@ -100,6 +103,15 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) list_add_tail(&led_cdev->node, &leds_list); write_unlock(&leds_list_lock); +#ifdef CONFIG_LEDS_TRIGGERS + rwlock_init(&led_cdev->trigger_lock); + + led_trigger_set_default(led_cdev); + + class_device_create_file(led_cdev->class_dev, + &class_device_attr_trigger); +#endif + printk(KERN_INFO "Registered led device: %s\n", led_cdev->class_dev->class_id); @@ -117,6 +129,14 @@ void led_classdev_unregister(struct led_classdev *led_cdev) { class_device_remove_file(led_cdev->class_dev, &class_device_attr_brightness); +#ifdef CONFIG_LEDS_TRIGGERS + class_device_remove_file(led_cdev->class_dev, + &class_device_attr_trigger); + write_lock(&led_cdev->trigger_lock); + if (led_cdev->trigger) + led_trigger_set(led_cdev, NULL); + write_unlock(&led_cdev->trigger_lock); +#endif class_device_unregister(led_cdev->class_dev); |