1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * MSI GT683R led driver
14 #include "hid-ids.h"
33 	GT683R_LED_SIDE = 1,
62 	struct device *dev = led_cdev->dev->parent;  in gt683r_brightness_set()
64 	struct gt683r_led *led = hid_get_drvdata(hdev);  in gt683r_brightness_set()  local
67 		if (led_cdev == &led->led_devs[i])  in gt683r_brightness_set()
72 		led->brightnesses[i] = brightness;  in gt683r_brightness_set()
73 		schedule_work(&led->work);  in gt683r_brightness_set()
82 	struct hid_device *hdev = to_hid_device(dev->parent);  in mode_show()
83 	struct gt683r_led *led = hid_get_drvdata(hdev);  in mode_show()  local
85 	if (led->mode == GT683R_LED_NORMAL)  in mode_show()
87 	else if (led->mode == GT683R_LED_AUDIO)  in mode_show()
88 		sysfs_mode = 1;  in mode_show()
100 	struct hid_device *hdev = to_hid_device(dev->parent);  in mode_store()
101 	struct gt683r_led *led = hid_get_drvdata(hdev);  in mode_store()  local
105 		return -EINVAL;  in mode_store()
107 	mutex_lock(&led->lock);  in mode_store()
110 		led->mode = GT683R_LED_NORMAL;  in mode_store()
111 	else if (sysfs_mode == 1)  in mode_store()
112 		led->mode = GT683R_LED_AUDIO;  in mode_store()
114 		led->mode = GT683R_LED_BREATHING;  in mode_store()
116 	mutex_unlock(&led->lock);  in mode_store()
117 	schedule_work(&led->work);  in mode_store()
122 static int gt683r_led_snd_msg(struct gt683r_led *led, u8 *msg)  in gt683r_led_snd_msg()  argument
126 	ret = hid_hw_raw_request(led->hdev, msg[0], msg, GT683R_BUFFER_SIZE,  in gt683r_led_snd_msg()
129 		hid_err(led->hdev,  in gt683r_led_snd_msg()
133 		return -EIO;  in gt683r_led_snd_msg()
139 static int gt683r_leds_set(struct gt683r_led *led, u8 leds)  in gt683r_leds_set()  argument
146 		return -ENOMEM;  in gt683r_leds_set()
149 	buffer[1] = 0x02;  in gt683r_leds_set()
152 	ret = gt683r_led_snd_msg(led, buffer);  in gt683r_leds_set()
158 static int gt683r_mode_set(struct gt683r_led *led, u8 mode)  in gt683r_mode_set()  argument
165 		return -ENOMEM;  in gt683r_mode_set()
168 	buffer[1] = 0x02;  in gt683r_mode_set()
172 	ret = gt683r_led_snd_msg(led, buffer);  in gt683r_mode_set()
183 	struct gt683r_led *led = container_of(work, struct gt683r_led, work);  in gt683r_led_work()  local
185 	mutex_lock(&led->lock);  in gt683r_led_work()
188 		if (led->brightnesses[i])  in gt683r_led_work()
192 	if (gt683r_leds_set(led, leds))  in gt683r_led_work()
196 		mode = led->mode;  in gt683r_led_work()
200 	gt683r_mode_set(led, mode);  in gt683r_led_work()
202 	mutex_unlock(&led->lock);  in gt683r_led_work()
229 	struct gt683r_led *led;  in gt683r_led_probe()  local
231 	led = devm_kzalloc(&hdev->dev, sizeof(*led), GFP_KERNEL);  in gt683r_led_probe()
232 	if (!led)  in gt683r_led_probe()
233 		return -ENOMEM;  in gt683r_led_probe()
235 	mutex_init(&led->lock);  in gt683r_led_probe()
236 	INIT_WORK(&led->work, gt683r_led_work);  in gt683r_led_probe()
238 	led->mode = GT683R_LED_NORMAL;  in gt683r_led_probe()
239 	led->hdev = hdev;  in gt683r_led_probe()
240 	hid_set_drvdata(hdev, led);  in gt683r_led_probe()
255 		name_sz = strlen(dev_name(&hdev->dev)) +  in gt683r_led_probe()
258 		name = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);  in gt683r_led_probe()
260 			ret = -ENOMEM;  in gt683r_led_probe()
265 				dev_name(&hdev->dev), gt683r_panel_names[i]);  in gt683r_led_probe()
266 		led->led_devs[i].name = name;  in gt683r_led_probe()
267 		led->led_devs[i].max_brightness = 1;  in gt683r_led_probe()
268 		led->led_devs[i].brightness_set = gt683r_brightness_set;  in gt683r_led_probe()
269 		led->led_devs[i].groups = gt683r_led_groups;  in gt683r_led_probe()
271 		ret = led_classdev_register(&hdev->dev, &led->led_devs[i]);  in gt683r_led_probe()
273 			hid_err(hdev, "could not register led device\n");  in gt683r_led_probe()
281 	for (i = i - 1; i >= 0; i--)  in gt683r_led_probe()
282 		led_classdev_unregister(&led->led_devs[i]);  in gt683r_led_probe()
290 	struct gt683r_led *led = hid_get_drvdata(hdev);  in gt683r_led_remove()  local
293 		led_classdev_unregister(&led->led_devs[i]);  in gt683r_led_remove()
294 	flush_work(&led->work);  in gt683r_led_remove()
308 MODULE_DESCRIPTION("MSI GT683R led driver");