2 * lp5523.c - LP5523 LED Driver
4 * Copyright (C) 2010 Nokia Corporation
5 * Copyright (C) 2012 Texas Instruments
7 * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
8 * Milo(Woogyom) Kim <milo.kim@ti.com>
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * version 2 as published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25 #include <linux/delay.h>
26 #include <linux/firmware.h>
27 #include <linux/i2c.h>
28 #include <linux/init.h>
29 #include <linux/leds.h>
30 #include <linux/module.h>
31 #include <linux/mutex.h>
33 #include <linux/platform_data/leds-lp55xx.h>
34 #include <linux/slab.h>
36 #include "leds-lp55xx-common.h"
38 #define LP5523_PROGRAM_LENGTH 32 /* bytes */
39 /* Memory is used like this:
43 0x30 engine 1 muxing info
44 0x40 engine 2 muxing info
45 0x50 engine 3 muxing info
47 #define LP5523_MAX_LEDS 9
50 #define LP5523_REG_ENABLE 0x00
51 #define LP5523_REG_OP_MODE 0x01
52 #define LP5523_REG_ENABLE_LEDS_MSB 0x04
53 #define LP5523_REG_ENABLE_LEDS_LSB 0x05
54 #define LP5523_REG_LED_PWM_BASE 0x16
55 #define LP5523_REG_LED_CURRENT_BASE 0x26
56 #define LP5523_REG_CONFIG 0x36
57 #define LP5523_REG_STATUS 0x3A
58 #define LP5523_REG_RESET 0x3D
59 #define LP5523_REG_LED_TEST_CTRL 0x41
60 #define LP5523_REG_LED_TEST_ADC 0x42
61 #define LP5523_REG_CH1_PROG_START 0x4C
62 #define LP5523_REG_CH2_PROG_START 0x4D
63 #define LP5523_REG_CH3_PROG_START 0x4E
64 #define LP5523_REG_PROG_PAGE_SEL 0x4F
65 #define LP5523_REG_PROG_MEM 0x50
67 /* Bit description in registers */
68 #define LP5523_ENABLE 0x40
69 #define LP5523_AUTO_INC 0x40
70 #define LP5523_PWR_SAVE 0x20
71 #define LP5523_PWM_PWR_SAVE 0x04
72 #define LP5523_CP_AUTO 0x18
73 #define LP5523_AUTO_CLK 0x02
75 #define LP5523_EN_LEDTEST 0x80
76 #define LP5523_LEDTEST_DONE 0x80
77 #define LP5523_RESET 0xFF
78 #define LP5523_ADC_SHORTCIRC_LIM 80
79 #define LP5523_EXT_CLK_USED 0x08
80 #define LP5523_ENG_STATUS_MASK 0x07
82 /* Memory Page Selection */
83 #define LP5523_PAGE_ENG1 0
84 #define LP5523_PAGE_ENG2 1
85 #define LP5523_PAGE_ENG3 2
86 #define LP5523_PAGE_MUX1 3
87 #define LP5523_PAGE_MUX2 4
88 #define LP5523_PAGE_MUX3 5
90 /* Program Memory Operations */
91 #define LP5523_MODE_ENG1_M 0x30 /* Operation Mode Register */
92 #define LP5523_MODE_ENG2_M 0x0C
93 #define LP5523_MODE_ENG3_M 0x03
94 #define LP5523_LOAD_ENG1 0x10
95 #define LP5523_LOAD_ENG2 0x04
96 #define LP5523_LOAD_ENG3 0x01
98 #define LP5523_ENG1_IS_LOADING(mode) \
99 ((mode & LP5523_MODE_ENG1_M) == LP5523_LOAD_ENG1)
100 #define LP5523_ENG2_IS_LOADING(mode) \
101 ((mode & LP5523_MODE_ENG2_M) == LP5523_LOAD_ENG2)
102 #define LP5523_ENG3_IS_LOADING(mode) \
103 ((mode & LP5523_MODE_ENG3_M) == LP5523_LOAD_ENG3)
105 #define LP5523_EXEC_ENG1_M 0x30 /* Enable Register */
106 #define LP5523_EXEC_ENG2_M 0x0C
107 #define LP5523_EXEC_ENG3_M 0x03
108 #define LP5523_EXEC_M 0x3F
109 #define LP5523_RUN_ENG1 0x20
110 #define LP5523_RUN_ENG2 0x08
111 #define LP5523_RUN_ENG3 0x02
113 #define LED_ACTIVE(mux, led) (!!(mux & (0x0001 << led)))
115 enum lp5523_chip_id {
120 static int lp5523_init_program_engine(struct lp55xx_chip *chip);
122 static inline void lp5523_wait_opmode_done(void)
124 usleep_range(1000, 2000);
127 static void lp5523_set_led_current(struct lp55xx_led *led, u8 led_current)
129 led->led_current = led_current;
130 lp55xx_write(led->chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr,
134 static int lp5523_post_init_device(struct lp55xx_chip *chip)
138 ret = lp55xx_write(chip, LP5523_REG_ENABLE, LP5523_ENABLE);
142 /* Chip startup time is 500 us, 1 - 2 ms gives some margin */
143 usleep_range(1000, 2000);
145 ret = lp55xx_write(chip, LP5523_REG_CONFIG,
146 LP5523_AUTO_INC | LP5523_PWR_SAVE |
147 LP5523_CP_AUTO | LP5523_AUTO_CLK |
148 LP5523_PWM_PWR_SAVE);
152 /* turn on all leds */
153 ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_MSB, 0x01);
157 ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_LSB, 0xff);
161 return lp5523_init_program_engine(chip);
164 static void lp5523_load_engine(struct lp55xx_chip *chip)
166 enum lp55xx_engine_index idx = chip->engine_idx;
168 [LP55XX_ENGINE_1] = LP5523_MODE_ENG1_M,
169 [LP55XX_ENGINE_2] = LP5523_MODE_ENG2_M,
170 [LP55XX_ENGINE_3] = LP5523_MODE_ENG3_M,
174 [LP55XX_ENGINE_1] = LP5523_LOAD_ENG1,
175 [LP55XX_ENGINE_2] = LP5523_LOAD_ENG2,
176 [LP55XX_ENGINE_3] = LP5523_LOAD_ENG3,
179 lp55xx_update_bits(chip, LP5523_REG_OP_MODE, mask[idx], val[idx]);
181 lp5523_wait_opmode_done();
184 static void lp5523_load_engine_and_select_page(struct lp55xx_chip *chip)
186 enum lp55xx_engine_index idx = chip->engine_idx;
188 [LP55XX_ENGINE_1] = LP5523_PAGE_ENG1,
189 [LP55XX_ENGINE_2] = LP5523_PAGE_ENG2,
190 [LP55XX_ENGINE_3] = LP5523_PAGE_ENG3,
193 lp5523_load_engine(chip);
195 lp55xx_write(chip, LP5523_REG_PROG_PAGE_SEL, page_sel[idx]);
198 static void lp5523_stop_engine(struct lp55xx_chip *chip)
200 lp55xx_write(chip, LP5523_REG_OP_MODE, 0);
201 lp5523_wait_opmode_done();
204 static void lp5523_turn_off_channels(struct lp55xx_chip *chip)
208 for (i = 0; i < LP5523_MAX_LEDS; i++)
209 lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + i, 0);
212 static void lp5523_run_engine(struct lp55xx_chip *chip, bool start)
220 lp5523_stop_engine(chip);
221 lp5523_turn_off_channels(chip);
227 * operation mode and enable register should updated at the same time
230 ret = lp55xx_read(chip, LP5523_REG_OP_MODE, &mode);
234 ret = lp55xx_read(chip, LP5523_REG_ENABLE, &exec);
238 /* change operation mode to RUN only when each engine is loading */
239 if (LP5523_ENG1_IS_LOADING(mode)) {
240 mode = (mode & ~LP5523_MODE_ENG1_M) | LP5523_RUN_ENG1;
241 exec = (exec & ~LP5523_EXEC_ENG1_M) | LP5523_RUN_ENG1;
244 if (LP5523_ENG2_IS_LOADING(mode)) {
245 mode = (mode & ~LP5523_MODE_ENG2_M) | LP5523_RUN_ENG2;
246 exec = (exec & ~LP5523_EXEC_ENG2_M) | LP5523_RUN_ENG2;
249 if (LP5523_ENG3_IS_LOADING(mode)) {
250 mode = (mode & ~LP5523_MODE_ENG3_M) | LP5523_RUN_ENG3;
251 exec = (exec & ~LP5523_EXEC_ENG3_M) | LP5523_RUN_ENG3;
254 lp55xx_write(chip, LP5523_REG_OP_MODE, mode);
255 lp5523_wait_opmode_done();
257 lp55xx_update_bits(chip, LP5523_REG_ENABLE, LP5523_EXEC_M, exec);
260 static int lp5523_init_program_engine(struct lp55xx_chip *chip)
266 /* one pattern per engine setting LED MUX start and stop addresses */
267 static const u8 pattern[][LP5523_PROGRAM_LENGTH] = {
268 { 0x9c, 0x30, 0x9c, 0xb0, 0x9d, 0x80, 0xd8, 0x00, 0},
269 { 0x9c, 0x40, 0x9c, 0xc0, 0x9d, 0x80, 0xd8, 0x00, 0},
270 { 0x9c, 0x50, 0x9c, 0xd0, 0x9d, 0x80, 0xd8, 0x00, 0},
273 /* hardcode 32 bytes of memory for each engine from program memory */
274 ret = lp55xx_write(chip, LP5523_REG_CH1_PROG_START, 0x00);
278 ret = lp55xx_write(chip, LP5523_REG_CH2_PROG_START, 0x10);
282 ret = lp55xx_write(chip, LP5523_REG_CH3_PROG_START, 0x20);
286 /* write LED MUX address space for each engine */
287 for (i = LP55XX_ENGINE_1; i <= LP55XX_ENGINE_3; i++) {
288 chip->engine_idx = i;
289 lp5523_load_engine_and_select_page(chip);
291 for (j = 0; j < LP5523_PROGRAM_LENGTH; j++) {
292 ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + j,
299 lp5523_run_engine(chip, true);
301 /* Let the programs run for couple of ms and check the engine status */
302 usleep_range(3000, 6000);
303 lp55xx_read(chip, LP5523_REG_STATUS, &status);
304 status &= LP5523_ENG_STATUS_MASK;
306 if (status != LP5523_ENG_STATUS_MASK) {
307 dev_err(&chip->cl->dev,
308 "cound not configure LED engine, status = 0x%.2x\n",
314 lp5523_stop_engine(chip);
318 static int lp5523_update_program_memory(struct lp55xx_chip *chip,
319 const u8 *data, size_t size)
321 u8 pattern[LP5523_PROGRAM_LENGTH] = {0};
329 while ((offset < size - 1) && (i < LP5523_PROGRAM_LENGTH)) {
330 /* separate sscanfs because length is working only for %s */
331 ret = sscanf(data + offset, "%2s%n ", c, &nrchars);
335 ret = sscanf(c, "%2x", &cmd);
339 pattern[i] = (u8)cmd;
344 /* Each instruction is 16bit long. Check that length is even */
348 for (i = 0; i < LP5523_PROGRAM_LENGTH; i++) {
349 ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + i, pattern[i]);
357 dev_err(&chip->cl->dev, "wrong pattern format\n");
361 static void lp5523_firmware_loaded(struct lp55xx_chip *chip)
363 const struct firmware *fw = chip->fw;
365 if (fw->size > LP5523_PROGRAM_LENGTH) {
366 dev_err(&chip->cl->dev, "firmware data size overflow: %zu\n",
372 * Program momery sequence
373 * 1) set engine mode to "LOAD"
374 * 2) write firmware data into program memory
377 lp5523_load_engine_and_select_page(chip);
378 lp5523_update_program_memory(chip, fw->data, fw->size);
381 static ssize_t show_engine_mode(struct device *dev,
382 struct device_attribute *attr,
385 struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
386 struct lp55xx_chip *chip = led->chip;
387 enum lp55xx_engine_mode mode = chip->engines[nr - 1].mode;
390 case LP55XX_ENGINE_RUN:
391 return sprintf(buf, "run\n");
392 case LP55XX_ENGINE_LOAD:
393 return sprintf(buf, "load\n");
394 case LP55XX_ENGINE_DISABLED:
396 return sprintf(buf, "disabled\n");
403 static ssize_t store_engine_mode(struct device *dev,
404 struct device_attribute *attr,
405 const char *buf, size_t len, int nr)
407 struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
408 struct lp55xx_chip *chip = led->chip;
409 struct lp55xx_engine *engine = &chip->engines[nr - 1];
411 mutex_lock(&chip->lock);
413 chip->engine_idx = nr;
415 if (!strncmp(buf, "run", 3)) {
416 lp5523_run_engine(chip, true);
417 engine->mode = LP55XX_ENGINE_RUN;
418 } else if (!strncmp(buf, "load", 4)) {
419 lp5523_stop_engine(chip);
420 lp5523_load_engine(chip);
421 engine->mode = LP55XX_ENGINE_LOAD;
422 } else if (!strncmp(buf, "disabled", 8)) {
423 lp5523_stop_engine(chip);
424 engine->mode = LP55XX_ENGINE_DISABLED;
427 mutex_unlock(&chip->lock);
435 static int lp5523_mux_parse(const char *buf, u16 *mux, size_t len)
440 len = min_t(int, len, LP5523_MAX_LEDS);
442 for (i = 0; i < len; i++) {
461 static void lp5523_mux_to_array(u16 led_mux, char *array)
464 for (i = 0; i < LP5523_MAX_LEDS; i++)
465 pos += sprintf(array + pos, "%x", LED_ACTIVE(led_mux, i));
470 static ssize_t show_engine_leds(struct device *dev,
471 struct device_attribute *attr,
474 struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
475 struct lp55xx_chip *chip = led->chip;
476 char mux[LP5523_MAX_LEDS + 1];
478 lp5523_mux_to_array(chip->engines[nr - 1].led_mux, mux);
480 return sprintf(buf, "%s\n", mux);
486 static int lp5523_load_mux(struct lp55xx_chip *chip, u16 mux, int nr)
488 struct lp55xx_engine *engine = &chip->engines[nr - 1];
491 [LP55XX_ENGINE_1] = LP5523_PAGE_MUX1,
492 [LP55XX_ENGINE_2] = LP5523_PAGE_MUX2,
493 [LP55XX_ENGINE_3] = LP5523_PAGE_MUX3,
496 lp5523_load_engine(chip);
498 ret = lp55xx_write(chip, LP5523_REG_PROG_PAGE_SEL, mux_page[nr]);
502 ret = lp55xx_write(chip, LP5523_REG_PROG_MEM , (u8)(mux >> 8));
506 ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + 1, (u8)(mux));
510 engine->led_mux = mux;
514 static ssize_t store_engine_leds(struct device *dev,
515 struct device_attribute *attr,
516 const char *buf, size_t len, int nr)
518 struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
519 struct lp55xx_chip *chip = led->chip;
520 struct lp55xx_engine *engine = &chip->engines[nr - 1];
524 if (lp5523_mux_parse(buf, &mux, len))
527 mutex_lock(&chip->lock);
529 chip->engine_idx = nr;
532 if (engine->mode != LP55XX_ENGINE_LOAD)
535 if (lp5523_load_mux(chip, mux, nr))
540 mutex_unlock(&chip->lock);
547 static ssize_t store_engine_load(struct device *dev,
548 struct device_attribute *attr,
549 const char *buf, size_t len, int nr)
551 struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
552 struct lp55xx_chip *chip = led->chip;
555 mutex_lock(&chip->lock);
557 chip->engine_idx = nr;
558 lp5523_load_engine_and_select_page(chip);
559 ret = lp5523_update_program_memory(chip, buf, len);
561 mutex_unlock(&chip->lock);
569 static ssize_t lp5523_selftest(struct device *dev,
570 struct device_attribute *attr,
573 struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev));
574 struct lp55xx_chip *chip = led->chip;
575 struct lp55xx_platform_data *pdata = chip->pdata;
579 mutex_lock(&chip->lock);
581 ret = lp55xx_read(chip, LP5523_REG_STATUS, &status);
585 /* Check that ext clock is really in use if requested */
586 if (pdata->clock_mode == LP55XX_CLOCK_EXT) {
587 if ((status & LP5523_EXT_CLK_USED) == 0)
591 /* Measure VDD (i.e. VBAT) first (channel 16 corresponds to VDD) */
592 lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL, LP5523_EN_LEDTEST | 16);
593 usleep_range(3000, 6000); /* ADC conversion time is typically 2.7 ms */
594 ret = lp55xx_read(chip, LP5523_REG_STATUS, &status);
598 if (!(status & LP5523_LEDTEST_DONE))
599 usleep_range(3000, 6000); /* Was not ready. Wait little bit */
601 ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &vdd);
605 vdd--; /* There may be some fluctuation in measurement */
607 for (i = 0; i < LP5523_MAX_LEDS; i++) {
608 /* Skip non-existing channels */
609 if (pdata->led_config[i].led_current == 0)
612 /* Set default current */
613 lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + i,
614 pdata->led_config[i].led_current);
616 lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + i, 0xff);
617 /* let current stabilize 2 - 4ms before measurements start */
618 usleep_range(2000, 4000);
619 lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL,
620 LP5523_EN_LEDTEST | i);
621 /* ADC conversion time is 2.7 ms typically */
622 usleep_range(3000, 6000);
623 ret = lp55xx_read(chip, LP5523_REG_STATUS, &status);
627 if (!(status & LP5523_LEDTEST_DONE))
628 usleep_range(3000, 6000);/* Was not ready. Wait. */
630 ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &adc);
634 if (adc >= vdd || adc < LP5523_ADC_SHORTCIRC_LIM)
635 pos += sprintf(buf + pos, "LED %d FAIL\n", i);
637 lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + i, 0x00);
639 /* Restore current */
640 lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + i,
645 pos = sprintf(buf, "OK\n");
648 pos = sprintf(buf, "FAIL\n");
651 mutex_unlock(&chip->lock);
656 static void lp5523_led_brightness_work(struct work_struct *work)
658 struct lp55xx_led *led = container_of(work, struct lp55xx_led,
660 struct lp55xx_chip *chip = led->chip;
662 mutex_lock(&chip->lock);
663 lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr,
665 mutex_unlock(&chip->lock);
668 static LP55XX_DEV_ATTR_RW(engine1_mode, show_engine1_mode, store_engine1_mode);
669 static LP55XX_DEV_ATTR_RW(engine2_mode, show_engine2_mode, store_engine2_mode);
670 static LP55XX_DEV_ATTR_RW(engine3_mode, show_engine3_mode, store_engine3_mode);
671 static LP55XX_DEV_ATTR_RW(engine1_leds, show_engine1_leds, store_engine1_leds);
672 static LP55XX_DEV_ATTR_RW(engine2_leds, show_engine2_leds, store_engine2_leds);
673 static LP55XX_DEV_ATTR_RW(engine3_leds, show_engine3_leds, store_engine3_leds);
674 static LP55XX_DEV_ATTR_WO(engine1_load, store_engine1_load);
675 static LP55XX_DEV_ATTR_WO(engine2_load, store_engine2_load);
676 static LP55XX_DEV_ATTR_WO(engine3_load, store_engine3_load);
677 static LP55XX_DEV_ATTR_RO(selftest, lp5523_selftest);
679 static struct attribute *lp5523_attributes[] = {
680 &dev_attr_engine1_mode.attr,
681 &dev_attr_engine2_mode.attr,
682 &dev_attr_engine3_mode.attr,
683 &dev_attr_engine1_load.attr,
684 &dev_attr_engine2_load.attr,
685 &dev_attr_engine3_load.attr,
686 &dev_attr_engine1_leds.attr,
687 &dev_attr_engine2_leds.attr,
688 &dev_attr_engine3_leds.attr,
689 &dev_attr_selftest.attr,
693 static const struct attribute_group lp5523_group = {
694 .attrs = lp5523_attributes,
697 /* Chip specific configurations */
698 static struct lp55xx_device_config lp5523_cfg = {
700 .addr = LP5523_REG_RESET,
704 .addr = LP5523_REG_ENABLE,
705 .val = LP5523_ENABLE,
707 .max_channel = LP5523_MAX_LEDS,
708 .post_init_device = lp5523_post_init_device,
709 .brightness_work_fn = lp5523_led_brightness_work,
710 .set_led_current = lp5523_set_led_current,
711 .firmware_cb = lp5523_firmware_loaded,
712 .run_engine = lp5523_run_engine,
713 .dev_attr_group = &lp5523_group,
716 static int lp5523_probe(struct i2c_client *client,
717 const struct i2c_device_id *id)
720 struct lp55xx_chip *chip;
721 struct lp55xx_led *led;
722 struct lp55xx_platform_data *pdata;
723 struct device_node *np = client->dev.of_node;
725 if (!dev_get_platdata(&client->dev)) {
727 ret = lp55xx_of_populate_pdata(&client->dev, np);
731 dev_err(&client->dev, "no platform data\n");
735 pdata = dev_get_platdata(&client->dev);
737 chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
741 led = devm_kzalloc(&client->dev,
742 sizeof(*led) * pdata->num_channels, GFP_KERNEL);
748 chip->cfg = &lp5523_cfg;
750 mutex_init(&chip->lock);
752 i2c_set_clientdata(client, led);
754 ret = lp55xx_init_device(chip);
758 dev_info(&client->dev, "%s Programmable led chip found\n", id->name);
760 ret = lp55xx_register_leds(led, chip);
762 goto err_register_leds;
764 ret = lp55xx_register_sysfs(chip);
766 dev_err(&client->dev, "registering sysfs failed\n");
767 goto err_register_sysfs;
773 lp55xx_unregister_leds(led, chip);
775 lp55xx_deinit_device(chip);
780 static int lp5523_remove(struct i2c_client *client)
782 struct lp55xx_led *led = i2c_get_clientdata(client);
783 struct lp55xx_chip *chip = led->chip;
785 lp5523_stop_engine(chip);
786 lp55xx_unregister_sysfs(chip);
787 lp55xx_unregister_leds(led, chip);
788 lp55xx_deinit_device(chip);
793 static const struct i2c_device_id lp5523_id[] = {
794 { "lp5523", LP5523 },
795 { "lp55231", LP55231 },
799 MODULE_DEVICE_TABLE(i2c, lp5523_id);
802 static const struct of_device_id of_lp5523_leds_match[] = {
803 { .compatible = "national,lp5523", },
807 MODULE_DEVICE_TABLE(of, of_lp5523_leds_match);
810 static struct i2c_driver lp5523_driver = {
813 .of_match_table = of_match_ptr(of_lp5523_leds_match),
815 .probe = lp5523_probe,
816 .remove = lp5523_remove,
817 .id_table = lp5523_id,
820 module_i2c_driver(lp5523_driver);
822 MODULE_AUTHOR("Mathias Nyman <mathias.nyman@nokia.com>");
823 MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>");
824 MODULE_DESCRIPTION("LP5523 LED engine");
825 MODULE_LICENSE("GPL");