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7a8685ac DM |
1 | /* |
2 | * TI LP8860 4-Channel LED Driver | |
3 | * | |
4 | * Copyright (C) 2014 Texas Instruments | |
5 | * | |
6 | * Author: Dan Murphy <dmurphy@ti.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/i2c.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/leds.h> | |
17 | #include <linux/regmap.h> | |
18 | #include <linux/regulator/consumer.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/mutex.h> | |
21 | #include <linux/of.h> | |
22 | #include <linux/of_gpio.h> | |
23 | #include <linux/gpio/consumer.h> | |
24 | #include <linux/slab.h> | |
c6b218c9 | 25 | #include <uapi/linux/uleds.h> |
7a8685ac DM |
26 | |
27 | #define LP8860_DISP_CL1_BRT_MSB 0x00 | |
28 | #define LP8860_DISP_CL1_BRT_LSB 0x01 | |
29 | #define LP8860_DISP_CL1_CURR_MSB 0x02 | |
30 | #define LP8860_DISP_CL1_CURR_LSB 0x03 | |
31 | #define LP8860_CL2_BRT_MSB 0x04 | |
32 | #define LP8860_CL2_BRT_LSB 0x05 | |
33 | #define LP8860_CL2_CURRENT 0x06 | |
34 | #define LP8860_CL3_BRT_MSB 0x07 | |
35 | #define LP8860_CL3_BRT_LSB 0x08 | |
36 | #define LP8860_CL3_CURRENT 0x09 | |
37 | #define LP8860_CL4_BRT_MSB 0x0a | |
38 | #define LP8860_CL4_BRT_LSB 0x0b | |
39 | #define LP8860_CL4_CURRENT 0x0c | |
40 | #define LP8860_CONFIG 0x0d | |
41 | #define LP8860_STATUS 0x0e | |
42 | #define LP8860_FAULT 0x0f | |
43 | #define LP8860_LED_FAULT 0x10 | |
44 | #define LP8860_FAULT_CLEAR 0x11 | |
45 | #define LP8860_ID 0x12 | |
46 | #define LP8860_TEMP_MSB 0x13 | |
47 | #define LP8860_TEMP_LSB 0x14 | |
48 | #define LP8860_DISP_LED_CURR_MSB 0x15 | |
49 | #define LP8860_DISP_LED_CURR_LSB 0x16 | |
50 | #define LP8860_DISP_LED_PWM_MSB 0x17 | |
51 | #define LP8860_DISP_LED_PWM_LSB 0x18 | |
52 | #define LP8860_EEPROM_CNTRL 0x19 | |
53 | #define LP8860_EEPROM_UNLOCK 0x1a | |
54 | ||
55 | #define LP8860_EEPROM_REG_0 0x60 | |
56 | #define LP8860_EEPROM_REG_1 0x61 | |
57 | #define LP8860_EEPROM_REG_2 0x62 | |
58 | #define LP8860_EEPROM_REG_3 0x63 | |
59 | #define LP8860_EEPROM_REG_4 0x64 | |
60 | #define LP8860_EEPROM_REG_5 0x65 | |
61 | #define LP8860_EEPROM_REG_6 0x66 | |
62 | #define LP8860_EEPROM_REG_7 0x67 | |
63 | #define LP8860_EEPROM_REG_8 0x68 | |
64 | #define LP8860_EEPROM_REG_9 0x69 | |
65 | #define LP8860_EEPROM_REG_10 0x6a | |
66 | #define LP8860_EEPROM_REG_11 0x6b | |
67 | #define LP8860_EEPROM_REG_12 0x6c | |
68 | #define LP8860_EEPROM_REG_13 0x6d | |
69 | #define LP8860_EEPROM_REG_14 0x6e | |
70 | #define LP8860_EEPROM_REG_15 0x6f | |
71 | #define LP8860_EEPROM_REG_16 0x70 | |
72 | #define LP8860_EEPROM_REG_17 0x71 | |
73 | #define LP8860_EEPROM_REG_18 0x72 | |
74 | #define LP8860_EEPROM_REG_19 0x73 | |
75 | #define LP8860_EEPROM_REG_20 0x74 | |
76 | #define LP8860_EEPROM_REG_21 0x75 | |
77 | #define LP8860_EEPROM_REG_22 0x76 | |
78 | #define LP8860_EEPROM_REG_23 0x77 | |
79 | #define LP8860_EEPROM_REG_24 0x78 | |
80 | ||
81 | #define LP8860_LOCK_EEPROM 0x00 | |
82 | #define LP8860_UNLOCK_EEPROM 0x01 | |
83 | #define LP8860_PROGRAM_EEPROM 0x02 | |
84 | #define LP8860_EEPROM_CODE_1 0x08 | |
85 | #define LP8860_EEPROM_CODE_2 0xba | |
86 | #define LP8860_EEPROM_CODE_3 0xef | |
87 | ||
88 | #define LP8860_CLEAR_FAULTS 0x01 | |
89 | ||
7a8685ac DM |
90 | /** |
91 | * struct lp8860_led - | |
92 | * @lock - Lock for reading/writing the device | |
7a8685ac DM |
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 | |
7a8685ac | 99 | * @label - LED label |
8a7a76c8 | 100 | */ |
7a8685ac DM |
101 | struct lp8860_led { |
102 | struct mutex lock; | |
7a8685ac DM |
103 | struct i2c_client *client; |
104 | struct led_classdev led_dev; | |
105 | struct regmap *regmap; | |
106 | struct regmap *eeprom_regmap; | |
107 | struct gpio_desc *enable_gpio; | |
108 | struct regulator *regulator; | |
c6b218c9 | 109 | char label[LED_MAX_NAME_SIZE]; |
7a8685ac DM |
110 | }; |
111 | ||
112 | struct lp8860_eeprom_reg { | |
113 | uint8_t reg; | |
114 | uint8_t value; | |
115 | }; | |
116 | ||
117 | static struct lp8860_eeprom_reg lp8860_eeprom_disp_regs[] = { | |
118 | { LP8860_EEPROM_REG_0, 0xed }, | |
119 | { LP8860_EEPROM_REG_1, 0xdf }, | |
120 | { LP8860_EEPROM_REG_2, 0xdc }, | |
121 | { LP8860_EEPROM_REG_3, 0xf0 }, | |
122 | { LP8860_EEPROM_REG_4, 0xdf }, | |
123 | { LP8860_EEPROM_REG_5, 0xe5 }, | |
124 | { LP8860_EEPROM_REG_6, 0xf2 }, | |
125 | { LP8860_EEPROM_REG_7, 0x77 }, | |
126 | { LP8860_EEPROM_REG_8, 0x77 }, | |
127 | { LP8860_EEPROM_REG_9, 0x71 }, | |
128 | { LP8860_EEPROM_REG_10, 0x3f }, | |
129 | { LP8860_EEPROM_REG_11, 0xb7 }, | |
130 | { LP8860_EEPROM_REG_12, 0x17 }, | |
131 | { LP8860_EEPROM_REG_13, 0xef }, | |
132 | { LP8860_EEPROM_REG_14, 0xb0 }, | |
133 | { LP8860_EEPROM_REG_15, 0x87 }, | |
134 | { LP8860_EEPROM_REG_16, 0xce }, | |
135 | { LP8860_EEPROM_REG_17, 0x72 }, | |
136 | { LP8860_EEPROM_REG_18, 0xe5 }, | |
137 | { LP8860_EEPROM_REG_19, 0xdf }, | |
138 | { LP8860_EEPROM_REG_20, 0x35 }, | |
139 | { LP8860_EEPROM_REG_21, 0x06 }, | |
140 | { LP8860_EEPROM_REG_22, 0xdc }, | |
141 | { LP8860_EEPROM_REG_23, 0x88 }, | |
142 | { LP8860_EEPROM_REG_24, 0x3E }, | |
143 | }; | |
144 | ||
145 | static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock) | |
146 | { | |
147 | int ret; | |
148 | ||
149 | mutex_lock(&led->lock); | |
150 | ||
151 | if (lock == LP8860_UNLOCK_EEPROM) { | |
152 | ret = regmap_write(led->regmap, | |
153 | LP8860_EEPROM_UNLOCK, | |
154 | LP8860_EEPROM_CODE_1); | |
155 | if (ret) { | |
156 | dev_err(&led->client->dev, "EEPROM Unlock failed\n"); | |
157 | goto out; | |
158 | } | |
159 | ||
160 | ret = regmap_write(led->regmap, | |
161 | LP8860_EEPROM_UNLOCK, | |
162 | LP8860_EEPROM_CODE_2); | |
163 | if (ret) { | |
164 | dev_err(&led->client->dev, "EEPROM Unlock failed\n"); | |
165 | goto out; | |
166 | } | |
167 | ret = regmap_write(led->regmap, | |
168 | LP8860_EEPROM_UNLOCK, | |
169 | LP8860_EEPROM_CODE_3); | |
170 | if (ret) { | |
171 | dev_err(&led->client->dev, "EEPROM Unlock failed\n"); | |
172 | goto out; | |
173 | } | |
174 | } else { | |
175 | ret = regmap_write(led->regmap, | |
176 | LP8860_EEPROM_UNLOCK, | |
177 | LP8860_LOCK_EEPROM); | |
178 | } | |
179 | ||
180 | out: | |
181 | mutex_unlock(&led->lock); | |
182 | return ret; | |
183 | } | |
184 | ||
185 | static int lp8860_fault_check(struct lp8860_led *led) | |
186 | { | |
187 | int ret, fault; | |
188 | unsigned int read_buf; | |
189 | ||
190 | ret = regmap_read(led->regmap, LP8860_LED_FAULT, &read_buf); | |
191 | if (ret) | |
192 | goto out; | |
193 | ||
194 | fault = read_buf; | |
195 | ||
196 | ret = regmap_read(led->regmap, LP8860_FAULT, &read_buf); | |
197 | if (ret) | |
198 | goto out; | |
199 | ||
200 | fault |= read_buf; | |
201 | ||
202 | /* Attempt to clear any faults */ | |
203 | if (fault) | |
204 | ret = regmap_write(led->regmap, LP8860_FAULT_CLEAR, | |
205 | LP8860_CLEAR_FAULTS); | |
206 | out: | |
207 | return ret; | |
208 | } | |
209 | ||
7c4b10a2 AL |
210 | static int lp8860_brightness_set(struct led_classdev *led_cdev, |
211 | enum led_brightness brt_val) | |
7a8685ac | 212 | { |
7c4b10a2 AL |
213 | struct lp8860_led *led = |
214 | container_of(led_cdev, struct lp8860_led, led_dev); | |
215 | int disp_brightness = brt_val * 255; | |
7a8685ac | 216 | int ret; |
7a8685ac DM |
217 | |
218 | mutex_lock(&led->lock); | |
219 | ||
220 | ret = lp8860_fault_check(led); | |
221 | if (ret) { | |
222 | dev_err(&led->client->dev, "Cannot read/clear faults\n"); | |
223 | goto out; | |
224 | } | |
225 | ||
226 | ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_MSB, | |
227 | (disp_brightness & 0xff00) >> 8); | |
228 | if (ret) { | |
229 | dev_err(&led->client->dev, "Cannot write CL1 MSB\n"); | |
230 | goto out; | |
231 | } | |
232 | ||
233 | ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_LSB, | |
234 | disp_brightness & 0xff); | |
235 | if (ret) { | |
236 | dev_err(&led->client->dev, "Cannot write CL1 LSB\n"); | |
237 | goto out; | |
238 | } | |
239 | out: | |
240 | mutex_unlock(&led->lock); | |
7c4b10a2 | 241 | return ret; |
7a8685ac DM |
242 | } |
243 | ||
244 | static int lp8860_init(struct lp8860_led *led) | |
245 | { | |
246 | unsigned int read_buf; | |
247 | int ret, i, reg_count; | |
248 | ||
b12ef03a DM |
249 | if (led->regulator) { |
250 | ret = regulator_enable(led->regulator); | |
251 | if (ret) { | |
252 | dev_err(&led->client->dev, | |
253 | "Failed to enable regulator\n"); | |
254 | return ret; | |
255 | } | |
256 | } | |
257 | ||
7a8685ac DM |
258 | if (led->enable_gpio) |
259 | gpiod_direction_output(led->enable_gpio, 1); | |
260 | ||
261 | ret = lp8860_fault_check(led); | |
262 | if (ret) | |
263 | goto out; | |
264 | ||
265 | ret = regmap_read(led->regmap, LP8860_STATUS, &read_buf); | |
266 | if (ret) | |
267 | goto out; | |
268 | ||
269 | ret = lp8860_unlock_eeprom(led, LP8860_UNLOCK_EEPROM); | |
270 | if (ret) { | |
271 | dev_err(&led->client->dev, "Failed unlocking EEPROM\n"); | |
272 | goto out; | |
273 | } | |
274 | ||
275 | reg_count = ARRAY_SIZE(lp8860_eeprom_disp_regs) / sizeof(lp8860_eeprom_disp_regs[0]); | |
276 | for (i = 0; i < reg_count; i++) { | |
277 | ret = regmap_write(led->eeprom_regmap, | |
278 | lp8860_eeprom_disp_regs[i].reg, | |
279 | lp8860_eeprom_disp_regs[i].value); | |
280 | if (ret) { | |
281 | dev_err(&led->client->dev, "Failed writing EEPROM\n"); | |
282 | goto out; | |
283 | } | |
284 | } | |
285 | ||
286 | ret = lp8860_unlock_eeprom(led, LP8860_LOCK_EEPROM); | |
287 | if (ret) | |
288 | goto out; | |
289 | ||
290 | ret = regmap_write(led->regmap, | |
291 | LP8860_EEPROM_CNTRL, | |
292 | LP8860_PROGRAM_EEPROM); | |
b12ef03a | 293 | if (ret) { |
7a8685ac | 294 | dev_err(&led->client->dev, "Failed programming EEPROM\n"); |
b12ef03a DM |
295 | goto out; |
296 | } | |
297 | ||
298 | return ret; | |
299 | ||
7a8685ac DM |
300 | out: |
301 | if (ret) | |
302 | if (led->enable_gpio) | |
303 | gpiod_direction_output(led->enable_gpio, 0); | |
b12ef03a DM |
304 | |
305 | if (led->regulator) { | |
306 | ret = regulator_disable(led->regulator); | |
307 | if (ret) | |
308 | dev_err(&led->client->dev, | |
309 | "Failed to disable regulator\n"); | |
310 | } | |
311 | ||
7a8685ac DM |
312 | return ret; |
313 | } | |
314 | ||
de88e71a | 315 | static const struct reg_default lp8860_reg_defs[] = { |
7a8685ac DM |
316 | { LP8860_DISP_CL1_BRT_MSB, 0x00}, |
317 | { LP8860_DISP_CL1_BRT_LSB, 0x00}, | |
318 | { LP8860_DISP_CL1_CURR_MSB, 0x00}, | |
319 | { LP8860_DISP_CL1_CURR_LSB, 0x00}, | |
320 | { LP8860_CL2_BRT_MSB, 0x00}, | |
321 | { LP8860_CL2_BRT_LSB, 0x00}, | |
322 | { LP8860_CL2_CURRENT, 0x00}, | |
323 | { LP8860_CL3_BRT_MSB, 0x00}, | |
324 | { LP8860_CL3_BRT_LSB, 0x00}, | |
325 | { LP8860_CL3_CURRENT, 0x00}, | |
326 | { LP8860_CL4_BRT_MSB, 0x00}, | |
327 | { LP8860_CL4_BRT_LSB, 0x00}, | |
328 | { LP8860_CL4_CURRENT, 0x00}, | |
329 | { LP8860_CONFIG, 0x00}, | |
330 | { LP8860_FAULT_CLEAR, 0x00}, | |
331 | { LP8860_EEPROM_CNTRL, 0x80}, | |
332 | { LP8860_EEPROM_UNLOCK, 0x00}, | |
333 | }; | |
334 | ||
335 | static const struct regmap_config lp8860_regmap_config = { | |
336 | .reg_bits = 8, | |
337 | .val_bits = 8, | |
338 | ||
339 | .max_register = LP8860_EEPROM_UNLOCK, | |
340 | .reg_defaults = lp8860_reg_defs, | |
341 | .num_reg_defaults = ARRAY_SIZE(lp8860_reg_defs), | |
342 | .cache_type = REGCACHE_NONE, | |
343 | }; | |
344 | ||
de88e71a | 345 | static const struct reg_default lp8860_eeprom_defs[] = { |
7a8685ac DM |
346 | { LP8860_EEPROM_REG_0, 0x00 }, |
347 | { LP8860_EEPROM_REG_1, 0x00 }, | |
348 | { LP8860_EEPROM_REG_2, 0x00 }, | |
349 | { LP8860_EEPROM_REG_3, 0x00 }, | |
350 | { LP8860_EEPROM_REG_4, 0x00 }, | |
351 | { LP8860_EEPROM_REG_5, 0x00 }, | |
352 | { LP8860_EEPROM_REG_6, 0x00 }, | |
353 | { LP8860_EEPROM_REG_7, 0x00 }, | |
354 | { LP8860_EEPROM_REG_8, 0x00 }, | |
355 | { LP8860_EEPROM_REG_9, 0x00 }, | |
356 | { LP8860_EEPROM_REG_10, 0x00 }, | |
357 | { LP8860_EEPROM_REG_11, 0x00 }, | |
358 | { LP8860_EEPROM_REG_12, 0x00 }, | |
359 | { LP8860_EEPROM_REG_13, 0x00 }, | |
360 | { LP8860_EEPROM_REG_14, 0x00 }, | |
361 | { LP8860_EEPROM_REG_15, 0x00 }, | |
362 | { LP8860_EEPROM_REG_16, 0x00 }, | |
363 | { LP8860_EEPROM_REG_17, 0x00 }, | |
364 | { LP8860_EEPROM_REG_18, 0x00 }, | |
365 | { LP8860_EEPROM_REG_19, 0x00 }, | |
366 | { LP8860_EEPROM_REG_20, 0x00 }, | |
367 | { LP8860_EEPROM_REG_21, 0x00 }, | |
368 | { LP8860_EEPROM_REG_22, 0x00 }, | |
369 | { LP8860_EEPROM_REG_23, 0x00 }, | |
370 | { LP8860_EEPROM_REG_24, 0x00 }, | |
371 | }; | |
372 | ||
373 | static const struct regmap_config lp8860_eeprom_regmap_config = { | |
374 | .reg_bits = 8, | |
375 | .val_bits = 8, | |
376 | ||
377 | .max_register = LP8860_EEPROM_REG_24, | |
378 | .reg_defaults = lp8860_eeprom_defs, | |
379 | .num_reg_defaults = ARRAY_SIZE(lp8860_eeprom_defs), | |
380 | .cache_type = REGCACHE_NONE, | |
381 | }; | |
382 | ||
383 | static int lp8860_probe(struct i2c_client *client, | |
384 | const struct i2c_device_id *id) | |
385 | { | |
386 | int ret; | |
387 | struct lp8860_led *led; | |
388 | struct device_node *np = client->dev.of_node; | |
c6b218c9 DM |
389 | struct device_node *child_node; |
390 | const char *name; | |
7a8685ac DM |
391 | |
392 | led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL); | |
393 | if (!led) | |
394 | return -ENOMEM; | |
395 | ||
c6b218c9 | 396 | for_each_available_child_of_node(np, child_node) { |
50aa46c4 DM |
397 | led->led_dev.default_trigger = of_get_property(child_node, |
398 | "linux,default-trigger", | |
399 | NULL); | |
400 | ||
c6b218c9 DM |
401 | ret = of_property_read_string(child_node, "label", &name); |
402 | if (!ret) | |
403 | snprintf(led->label, sizeof(led->label), "%s:%s", | |
404 | id->name, name); | |
405 | else | |
406 | snprintf(led->label, sizeof(led->label), | |
407 | "%s::display_cluster", id->name); | |
7a8685ac DM |
408 | } |
409 | ||
eb2294c3 UKK |
410 | led->enable_gpio = devm_gpiod_get_optional(&client->dev, |
411 | "enable", GPIOD_OUT_LOW); | |
412 | if (IS_ERR(led->enable_gpio)) { | |
413 | ret = PTR_ERR(led->enable_gpio); | |
414 | dev_err(&client->dev, "Failed to get enable gpio: %d\n", ret); | |
415 | return ret; | |
416 | } | |
7a8685ac DM |
417 | |
418 | led->regulator = devm_regulator_get(&client->dev, "vled"); | |
419 | if (IS_ERR(led->regulator)) | |
420 | led->regulator = NULL; | |
421 | ||
422 | led->client = client; | |
423 | led->led_dev.name = led->label; | |
7c4b10a2 | 424 | led->led_dev.brightness_set_blocking = lp8860_brightness_set; |
7a8685ac DM |
425 | |
426 | mutex_init(&led->lock); | |
7a8685ac DM |
427 | |
428 | i2c_set_clientdata(client, led); | |
429 | ||
430 | led->regmap = devm_regmap_init_i2c(client, &lp8860_regmap_config); | |
431 | if (IS_ERR(led->regmap)) { | |
432 | ret = PTR_ERR(led->regmap); | |
433 | dev_err(&client->dev, "Failed to allocate register map: %d\n", | |
434 | ret); | |
435 | return ret; | |
436 | } | |
437 | ||
438 | led->eeprom_regmap = devm_regmap_init_i2c(client, &lp8860_eeprom_regmap_config); | |
439 | if (IS_ERR(led->eeprom_regmap)) { | |
440 | ret = PTR_ERR(led->eeprom_regmap); | |
441 | dev_err(&client->dev, "Failed to allocate register map: %d\n", | |
442 | ret); | |
443 | return ret; | |
444 | } | |
445 | ||
446 | ret = lp8860_init(led); | |
447 | if (ret) | |
448 | return ret; | |
449 | ||
a2169c9b | 450 | ret = devm_led_classdev_register(&client->dev, &led->led_dev); |
7a8685ac DM |
451 | if (ret) { |
452 | dev_err(&client->dev, "led register err: %d\n", ret); | |
453 | return ret; | |
454 | } | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
459 | static int lp8860_remove(struct i2c_client *client) | |
460 | { | |
461 | struct lp8860_led *led = i2c_get_clientdata(client); | |
462 | int ret; | |
463 | ||
7a8685ac DM |
464 | if (led->enable_gpio) |
465 | gpiod_direction_output(led->enable_gpio, 0); | |
466 | ||
467 | if (led->regulator) { | |
468 | ret = regulator_disable(led->regulator); | |
469 | if (ret) | |
470 | dev_err(&led->client->dev, | |
471 | "Failed to disable regulator\n"); | |
472 | } | |
473 | ||
a2169c9b DM |
474 | mutex_destroy(&led->lock); |
475 | ||
7a8685ac DM |
476 | return 0; |
477 | } | |
478 | ||
479 | static const struct i2c_device_id lp8860_id[] = { | |
480 | { "lp8860", 0 }, | |
481 | { } | |
482 | }; | |
483 | MODULE_DEVICE_TABLE(i2c, lp8860_id); | |
484 | ||
7a8685ac DM |
485 | static const struct of_device_id of_lp8860_leds_match[] = { |
486 | { .compatible = "ti,lp8860", }, | |
487 | {}, | |
488 | }; | |
489 | MODULE_DEVICE_TABLE(of, of_lp8860_leds_match); | |
7a8685ac DM |
490 | |
491 | static struct i2c_driver lp8860_driver = { | |
492 | .driver = { | |
493 | .name = "lp8860", | |
a2169c9b | 494 | .of_match_table = of_lp8860_leds_match, |
7a8685ac DM |
495 | }, |
496 | .probe = lp8860_probe, | |
497 | .remove = lp8860_remove, | |
498 | .id_table = lp8860_id, | |
499 | }; | |
500 | module_i2c_driver(lp8860_driver); | |
501 | ||
5ee047fb | 502 | MODULE_DESCRIPTION("Texas Instruments LP8860 LED driver"); |
7a8685ac | 503 | MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>"); |
a2169c9b | 504 | MODULE_LICENSE("GPL v2"); |