Lines Matching +full:led +full:-
2 * TI LP8860 4-Channel LED Driver
91 * struct lp8860_led -
92 * @lock - Lock for reading/writing the device
93 * @client - Pointer to the I2C client
94 * @led_dev - led class device pointer
95 * @regmap - Devices register map
96 * @eeprom_regmap - EEPROM register map
97 * @enable_gpio - VDDIO/EN gpio to enable communication interface
98 * @regulator - LED supply regulator pointer
99 * @label - LED label
145 static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock) in lp8860_unlock_eeprom() argument
149 mutex_lock(&led->lock); in lp8860_unlock_eeprom()
152 ret = regmap_write(led->regmap, in lp8860_unlock_eeprom()
156 dev_err(&led->client->dev, "EEPROM Unlock failed\n"); in lp8860_unlock_eeprom()
160 ret = regmap_write(led->regmap, in lp8860_unlock_eeprom()
164 dev_err(&led->client->dev, "EEPROM Unlock failed\n"); in lp8860_unlock_eeprom()
167 ret = regmap_write(led->regmap, in lp8860_unlock_eeprom()
171 dev_err(&led->client->dev, "EEPROM Unlock failed\n"); in lp8860_unlock_eeprom()
175 ret = regmap_write(led->regmap, in lp8860_unlock_eeprom()
181 mutex_unlock(&led->lock); in lp8860_unlock_eeprom()
185 static int lp8860_fault_check(struct lp8860_led *led) in lp8860_fault_check() argument
190 ret = regmap_read(led->regmap, LP8860_LED_FAULT, &read_buf); in lp8860_fault_check()
196 ret = regmap_read(led->regmap, LP8860_FAULT, &read_buf); in lp8860_fault_check()
204 ret = regmap_write(led->regmap, LP8860_FAULT_CLEAR, in lp8860_fault_check()
213 struct lp8860_led *led = in lp8860_brightness_set() local
218 mutex_lock(&led->lock); in lp8860_brightness_set()
220 ret = lp8860_fault_check(led); in lp8860_brightness_set()
222 dev_err(&led->client->dev, "Cannot read/clear faults\n"); in lp8860_brightness_set()
226 ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_MSB, in lp8860_brightness_set()
229 dev_err(&led->client->dev, "Cannot write CL1 MSB\n"); in lp8860_brightness_set()
233 ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_LSB, in lp8860_brightness_set()
236 dev_err(&led->client->dev, "Cannot write CL1 LSB\n"); in lp8860_brightness_set()
240 mutex_unlock(&led->lock); in lp8860_brightness_set()
244 static int lp8860_init(struct lp8860_led *led) in lp8860_init() argument
249 if (led->regulator) { in lp8860_init()
250 ret = regulator_enable(led->regulator); in lp8860_init()
252 dev_err(&led->client->dev, in lp8860_init()
258 if (led->enable_gpio) in lp8860_init()
259 gpiod_direction_output(led->enable_gpio, 1); in lp8860_init()
261 ret = lp8860_fault_check(led); in lp8860_init()
265 ret = regmap_read(led->regmap, LP8860_STATUS, &read_buf); in lp8860_init()
269 ret = lp8860_unlock_eeprom(led, LP8860_UNLOCK_EEPROM); in lp8860_init()
271 dev_err(&led->client->dev, "Failed unlocking EEPROM\n"); in lp8860_init()
277 ret = regmap_write(led->eeprom_regmap, in lp8860_init()
281 dev_err(&led->client->dev, "Failed writing EEPROM\n"); in lp8860_init()
286 ret = lp8860_unlock_eeprom(led, LP8860_LOCK_EEPROM); in lp8860_init()
290 ret = regmap_write(led->regmap, in lp8860_init()
294 dev_err(&led->client->dev, "Failed programming EEPROM\n"); in lp8860_init()
302 if (led->enable_gpio) in lp8860_init()
303 gpiod_direction_output(led->enable_gpio, 0); in lp8860_init()
305 if (led->regulator) { in lp8860_init()
306 ret = regulator_disable(led->regulator); in lp8860_init()
308 dev_err(&led->client->dev, in lp8860_init()
387 struct lp8860_led *led; in lp8860_probe() local
388 struct device_node *np = client->dev.of_node; in lp8860_probe()
392 led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL); in lp8860_probe()
393 if (!led) in lp8860_probe()
394 return -ENOMEM; in lp8860_probe()
397 led->led_dev.default_trigger = of_get_property(child_node, in lp8860_probe()
398 "linux,default-trigger", in lp8860_probe()
403 snprintf(led->label, sizeof(led->label), "%s:%s", in lp8860_probe()
404 id->name, name); in lp8860_probe()
406 snprintf(led->label, sizeof(led->label), in lp8860_probe()
407 "%s::display_cluster", id->name); in lp8860_probe()
410 led->enable_gpio = devm_gpiod_get_optional(&client->dev, in lp8860_probe()
412 if (IS_ERR(led->enable_gpio)) { in lp8860_probe()
413 ret = PTR_ERR(led->enable_gpio); in lp8860_probe()
414 dev_err(&client->dev, "Failed to get enable gpio: %d\n", ret); in lp8860_probe()
418 led->regulator = devm_regulator_get(&client->dev, "vled"); in lp8860_probe()
419 if (IS_ERR(led->regulator)) in lp8860_probe()
420 led->regulator = NULL; in lp8860_probe()
422 led->client = client; in lp8860_probe()
423 led->led_dev.name = led->label; in lp8860_probe()
424 led->led_dev.brightness_set_blocking = lp8860_brightness_set; in lp8860_probe()
426 mutex_init(&led->lock); in lp8860_probe()
428 i2c_set_clientdata(client, led); in lp8860_probe()
430 led->regmap = devm_regmap_init_i2c(client, &lp8860_regmap_config); in lp8860_probe()
431 if (IS_ERR(led->regmap)) { in lp8860_probe()
432 ret = PTR_ERR(led->regmap); in lp8860_probe()
433 dev_err(&client->dev, "Failed to allocate register map: %d\n", in lp8860_probe()
438 led->eeprom_regmap = devm_regmap_init_i2c(client, &lp8860_eeprom_regmap_config); in lp8860_probe()
439 if (IS_ERR(led->eeprom_regmap)) { in lp8860_probe()
440 ret = PTR_ERR(led->eeprom_regmap); in lp8860_probe()
441 dev_err(&client->dev, "Failed to allocate register map: %d\n", in lp8860_probe()
446 ret = lp8860_init(led); in lp8860_probe()
450 ret = devm_led_classdev_register(&client->dev, &led->led_dev); in lp8860_probe()
452 dev_err(&client->dev, "led register err: %d\n", ret); in lp8860_probe()
461 struct lp8860_led *led = i2c_get_clientdata(client); in lp8860_remove() local
464 if (led->enable_gpio) in lp8860_remove()
465 gpiod_direction_output(led->enable_gpio, 0); in lp8860_remove()
467 if (led->regulator) { in lp8860_remove()
468 ret = regulator_disable(led->regulator); in lp8860_remove()
470 dev_err(&led->client->dev, in lp8860_remove()
474 mutex_destroy(&led->lock); in lp8860_remove()
502 MODULE_DESCRIPTION("Texas Instruments LP8860 LED driver");