29 	struct led_classdev *led_cdev = dev_get_drvdata(dev);  in brightness_show()  local
32 	led_update_brightness(led_cdev);  in brightness_show()
34 	return sprintf(buf, "%u\n", led_cdev->brightness);  in brightness_show()
40 	struct led_classdev *led_cdev = dev_get_drvdata(dev);  in brightness_store()  local
44 	mutex_lock(&led_cdev->led_access);  in brightness_store()
46 	if (led_sysfs_is_disabled(led_cdev)) {  in brightness_store()
56 		led_trigger_remove(led_cdev);  in brightness_store()
57 	led_set_brightness(led_cdev, state);  in brightness_store()
58 	flush_work(&led_cdev->set_brightness_work);  in brightness_store()
62 	mutex_unlock(&led_cdev->led_access);  in brightness_store()
70 	struct led_classdev *led_cdev = dev_get_drvdata(dev);  in max_brightness_show()  local
72 	return sprintf(buf, "%u\n", led_cdev->max_brightness);  in max_brightness_show()
109 	struct led_classdev *led_cdev = dev_get_drvdata(dev);  in brightness_hw_changed_show()  local
111 	if (led_cdev->brightness_hw_changed == -1)  in brightness_hw_changed_show()
114 	return sprintf(buf, "%u\n", led_cdev->brightness_hw_changed);  in brightness_hw_changed_show()
119 static int led_add_brightness_hw_changed(struct led_classdev *led_cdev)  in led_add_brightness_hw_changed()  argument
121 	struct device *dev = led_cdev->dev;  in led_add_brightness_hw_changed()
130 	led_cdev->brightness_hw_changed_kn =  in led_add_brightness_hw_changed()
132 	if (!led_cdev->brightness_hw_changed_kn) {  in led_add_brightness_hw_changed()
141 static void led_remove_brightness_hw_changed(struct led_classdev *led_cdev)  in led_remove_brightness_hw_changed()  argument
143 	sysfs_put(led_cdev->brightness_hw_changed_kn);  in led_remove_brightness_hw_changed()
144 	device_remove_file(led_cdev->dev, &dev_attr_brightness_hw_changed);  in led_remove_brightness_hw_changed()
147 void led_classdev_notify_brightness_hw_changed(struct led_classdev *led_cdev,  in led_classdev_notify_brightness_hw_changed()  argument
150 	if (WARN_ON(!led_cdev->brightness_hw_changed_kn))  in led_classdev_notify_brightness_hw_changed()
153 	led_cdev->brightness_hw_changed = brightness;  in led_classdev_notify_brightness_hw_changed()
154 	sysfs_notify_dirent(led_cdev->brightness_hw_changed_kn);  in led_classdev_notify_brightness_hw_changed()
158 static int led_add_brightness_hw_changed(struct led_classdev *led_cdev)  in led_add_brightness_hw_changed()  argument
162 static void led_remove_brightness_hw_changed(struct led_classdev *led_cdev)  in led_remove_brightness_hw_changed()  argument
171 void led_classdev_suspend(struct led_classdev *led_cdev)  in led_classdev_suspend()  argument
173 	led_cdev->flags |= LED_SUSPENDED;  in led_classdev_suspend()
174 	led_set_brightness_nopm(led_cdev, 0);  in led_classdev_suspend()
182 void led_classdev_resume(struct led_classdev *led_cdev)  in led_classdev_resume()  argument
184 	led_set_brightness_nopm(led_cdev, led_cdev->brightness);  in led_classdev_resume()
186 	if (led_cdev->flash_resume)  in led_classdev_resume()
187 		led_cdev->flash_resume(led_cdev);  in led_classdev_resume()
189 	led_cdev->flags &= ~LED_SUSPENDED;  in led_classdev_resume()
196 	struct led_classdev *led_cdev = dev_get_drvdata(dev);  in led_suspend()  local
198 	if (led_cdev->flags & LED_CORE_SUSPENDRESUME)  in led_suspend()
199 		led_classdev_suspend(led_cdev);  in led_suspend()
206 	struct led_classdev *led_cdev = dev_get_drvdata(dev);  in led_resume()  local
208 	if (led_cdev->flags & LED_CORE_SUSPENDRESUME)  in led_resume()
209 		led_classdev_resume(led_cdev);  in led_resume()
247 			      struct led_classdev *led_cdev,  in led_classdev_register_ext()  argument
264 		proposed_name = led_cdev->name;  in led_classdev_register_ext()
271 	mutex_init(&led_cdev->led_access);  in led_classdev_register_ext()
272 	mutex_lock(&led_cdev->led_access);  in led_classdev_register_ext()
273 	led_cdev->dev = device_create_with_groups(leds_class, parent, 0,  in led_classdev_register_ext()
274 				led_cdev, led_cdev->groups, "%s", final_name);  in led_classdev_register_ext()
275 	if (IS_ERR(led_cdev->dev)) {  in led_classdev_register_ext()
276 		mutex_unlock(&led_cdev->led_access);  in led_classdev_register_ext()
277 		return PTR_ERR(led_cdev->dev);  in led_classdev_register_ext()
280 		led_cdev->dev->fwnode = init_data->fwnode;  in led_classdev_register_ext()
284 				led_cdev->name, dev_name(led_cdev->dev));  in led_classdev_register_ext()
286 	if (led_cdev->flags & LED_BRIGHT_HW_CHANGED) {  in led_classdev_register_ext()
287 		ret = led_add_brightness_hw_changed(led_cdev);  in led_classdev_register_ext()
289 			device_unregister(led_cdev->dev);  in led_classdev_register_ext()
290 			led_cdev->dev = NULL;  in led_classdev_register_ext()
291 			mutex_unlock(&led_cdev->led_access);  in led_classdev_register_ext()
296 	led_cdev->work_flags = 0;  in led_classdev_register_ext()
298 	init_rwsem(&led_cdev->trigger_lock);  in led_classdev_register_ext()
301 	led_cdev->brightness_hw_changed = -1;  in led_classdev_register_ext()
305 	list_add_tail(&led_cdev->node, &leds_list);  in led_classdev_register_ext()
308 	if (!led_cdev->max_brightness)  in led_classdev_register_ext()
309 		led_cdev->max_brightness = LED_FULL;  in led_classdev_register_ext()
311 	led_update_brightness(led_cdev);  in led_classdev_register_ext()
313 	led_init_core(led_cdev);  in led_classdev_register_ext()
316 	led_trigger_set_default(led_cdev);  in led_classdev_register_ext()
319 	mutex_unlock(&led_cdev->led_access);  in led_classdev_register_ext()
322 			led_cdev->name);  in led_classdev_register_ext()
334 void led_classdev_unregister(struct led_classdev *led_cdev)  in led_classdev_unregister()  argument
336 	if (IS_ERR_OR_NULL(led_cdev->dev))  in led_classdev_unregister()
340 	down_write(&led_cdev->trigger_lock);  in led_classdev_unregister()
341 	if (led_cdev->trigger)  in led_classdev_unregister()
342 		led_trigger_set(led_cdev, NULL);  in led_classdev_unregister()
343 	up_write(&led_cdev->trigger_lock);  in led_classdev_unregister()
346 	led_cdev->flags |= LED_UNREGISTERING;  in led_classdev_unregister()
349 	led_stop_software_blink(led_cdev);  in led_classdev_unregister()
351 	led_set_brightness(led_cdev, LED_OFF);  in led_classdev_unregister()
353 	flush_work(&led_cdev->set_brightness_work);  in led_classdev_unregister()
355 	if (led_cdev->flags & LED_BRIGHT_HW_CHANGED)  in led_classdev_unregister()
356 		led_remove_brightness_hw_changed(led_cdev);  in led_classdev_unregister()
358 	device_unregister(led_cdev->dev);  in led_classdev_unregister()
361 	list_del(&led_cdev->node);  in led_classdev_unregister()
364 	mutex_destroy(&led_cdev->led_access);  in led_classdev_unregister()
381 				   struct led_classdev *led_cdev,  in devm_led_classdev_register_ext()  argument
391 	rc = led_classdev_register_ext(parent, led_cdev, init_data);  in devm_led_classdev_register_ext()
397 	*dr = led_cdev;  in devm_led_classdev_register_ext()
406 	struct led_cdev **p = res;  in devm_led_classdev_match()
420 				  struct led_classdev *led_cdev)  in devm_led_classdev_unregister()  argument
424 			       devm_led_classdev_match, led_cdev));  in devm_led_classdev_unregister()