Lines Matching +full:led +full:- +full:8

1 // SPDX-License-Identifier: GPL-2.0-only
3  * TI LP8860 4-Channel LED Driver
90  * @led_dev: led class device pointer
94  * @regulator: LED supply regulator pointer
139 static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock)
143 	mutex_lock(&led->lock);
146 		ret = regmap_write(led->regmap,
150 			dev_err(&led->client->dev, "EEPROM Unlock failed\n");
154 		ret = regmap_write(led->regmap,
158 			dev_err(&led->client->dev, "EEPROM Unlock failed\n");
161 		ret = regmap_write(led->regmap,
165 			dev_err(&led->client->dev, "EEPROM Unlock failed\n");
169 		ret = regmap_write(led->regmap,
175 	mutex_unlock(&led->lock);
179 static int lp8860_fault_check(struct lp8860_led *led)
184 	ret = regmap_read(led->regmap, LP8860_LED_FAULT, &read_buf);
190 	ret = regmap_read(led->regmap, LP8860_FAULT, &read_buf);
198 		ret = regmap_write(led->regmap, LP8860_FAULT_CLEAR,
207 	struct lp8860_led *led =
212 	mutex_lock(&led->lock);
214 	ret = lp8860_fault_check(led);
216 		dev_err(&led->client->dev, "Cannot read/clear faults\n");
220 	ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_MSB,
221 			(disp_brightness & 0xff00) >> 8);
223 		dev_err(&led->client->dev, "Cannot write CL1 MSB\n");
227 	ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_LSB,
230 		dev_err(&led->client->dev, "Cannot write CL1 LSB\n");
234 	mutex_unlock(&led->lock);
238 static int lp8860_init(struct lp8860_led *led)
243 	if (led->regulator) {
244 		ret = regulator_enable(led->regulator);
246 			dev_err(&led->client->dev,
252 	gpiod_direction_output(led->enable_gpio, 1);
254 	ret = lp8860_fault_check(led);
258 	ret = regmap_read(led->regmap, LP8860_STATUS, &read_buf);
262 	ret = lp8860_unlock_eeprom(led, LP8860_UNLOCK_EEPROM);
264 		dev_err(&led->client->dev, "Failed unlocking EEPROM\n");
270 		ret = regmap_write(led->eeprom_regmap,
274 			dev_err(&led->client->dev, "Failed writing EEPROM\n");
279 	ret = lp8860_unlock_eeprom(led, LP8860_LOCK_EEPROM);
283 	ret = regmap_write(led->regmap,
287 		dev_err(&led->client->dev, "Failed programming EEPROM\n");
295 		gpiod_direction_output(led->enable_gpio, 0);
297 	if (led->regulator) {
298 		ret = regulator_disable(led->regulator);
300 			dev_err(&led->client->dev,
328 	.reg_bits = 8,
329 	.val_bits = 8,
366 	.reg_bits = 8,
367 	.val_bits = 8,
378 	struct lp8860_led *led;
379 	struct device_node *np = dev_of_node(&client->dev);
383 	led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
384 	if (!led)
385 		return -ENOMEM;
389 		return -EINVAL;
391 	led->enable_gpio = devm_gpiod_get_optional(&client->dev,
393 	if (IS_ERR(led->enable_gpio)) {
394 		ret = PTR_ERR(led->enable_gpio);
395 		dev_err(&client->dev, "Failed to get enable gpio: %d\n", ret);
399 	led->regulator = devm_regulator_get(&client->dev, "vled");
400 	if (IS_ERR(led->regulator))
401 		led->regulator = NULL;
403 	led->client = client;
404 	led->led_dev.brightness_set_blocking = lp8860_brightness_set;
406 	mutex_init(&led->lock);
408 	i2c_set_clientdata(client, led);
410 	led->regmap = devm_regmap_init_i2c(client, &lp8860_regmap_config);
411 	if (IS_ERR(led->regmap)) {
412 		ret = PTR_ERR(led->regmap);
413 		dev_err(&client->dev, "Failed to allocate register map: %d\n",
418 	led->eeprom_regmap = devm_regmap_init_i2c(client, &lp8860_eeprom_regmap_config);
419 	if (IS_ERR(led->eeprom_regmap)) {
420 		ret = PTR_ERR(led->eeprom_regmap);
421 		dev_err(&client->dev, "Failed to allocate register map: %d\n",
426 	ret = lp8860_init(led);
434 	ret = devm_led_classdev_register_ext(&client->dev, &led->led_dev,
437 		dev_err(&client->dev, "led register err: %d\n", ret);
446 	struct lp8860_led *led = i2c_get_clientdata(client);
449 	gpiod_direction_output(led->enable_gpio, 0);
451 	if (led->regulator) {
452 		ret = regulator_disable(led->regulator);
454 			dev_err(&led->client->dev,
458 	mutex_destroy(&led->lock);
484 MODULE_DESCRIPTION("Texas Instruments LP8860 LED driver");