Commit | Line | Data |
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2b27bdcc | 1 | // SPDX-License-Identifier: GPL-2.0-only |
0efba16c | 2 | /* |
9ef8c877 | 3 | * lp5523.c - LP5523, LP55231 LED Driver |
0efba16c SO |
4 | * |
5 | * Copyright (C) 2010 Nokia Corporation | |
a2387cb9 | 6 | * Copyright (C) 2012 Texas Instruments |
0efba16c SO |
7 | * |
8 | * Contact: Samu Onkalo <samu.p.onkalo@nokia.com> | |
a2387cb9 | 9 | * Milo(Woogyom) Kim <milo.kim@ti.com> |
0efba16c SO |
10 | */ |
11 | ||
0efba16c | 12 | #include <linux/delay.h> |
79bcc10b MWK |
13 | #include <linux/firmware.h> |
14 | #include <linux/i2c.h> | |
0efba16c | 15 | #include <linux/leds.h> |
79bcc10b MWK |
16 | #include <linux/module.h> |
17 | #include <linux/mutex.h> | |
c68f46dd | 18 | #include <linux/of.h> |
6a0c9a47 | 19 | #include <linux/platform_data/leds-lp55xx.h> |
79bcc10b | 20 | #include <linux/slab.h> |
6a0c9a47 MWK |
21 | |
22 | #include "leds-lp55xx-common.h" | |
0efba16c | 23 | |
bfb18d82 PM |
24 | #define LP5523_PROGRAM_LENGTH 32 /* bytes */ |
25 | /* Memory is used like this: | |
7105e464 DM |
26 | * 0x00 engine 1 program |
27 | * 0x10 engine 2 program | |
28 | * 0x20 engine 3 program | |
29 | * 0x30 engine 1 muxing info | |
30 | * 0x40 engine 2 muxing info | |
31 | * 0x50 engine 3 muxing info | |
32 | */ | |
12f022d2 MWK |
33 | #define LP5523_MAX_LEDS 9 |
34 | ||
35 | /* Registers */ | |
0efba16c SO |
36 | #define LP5523_REG_ENABLE 0x00 |
37 | #define LP5523_REG_OP_MODE 0x01 | |
0efba16c SO |
38 | #define LP5523_REG_ENABLE_LEDS_MSB 0x04 |
39 | #define LP5523_REG_ENABLE_LEDS_LSB 0x05 | |
52da81ea | 40 | #define LP5523_REG_LED_CTRL_BASE 0x06 |
0efba16c SO |
41 | #define LP5523_REG_LED_PWM_BASE 0x16 |
42 | #define LP5523_REG_LED_CURRENT_BASE 0x26 | |
43 | #define LP5523_REG_CONFIG 0x36 | |
12f022d2 MWK |
44 | #define LP5523_REG_STATUS 0x3A |
45 | #define LP5523_REG_RESET 0x3D | |
0efba16c SO |
46 | #define LP5523_REG_LED_TEST_CTRL 0x41 |
47 | #define LP5523_REG_LED_TEST_ADC 0x42 | |
52da81ea | 48 | #define LP5523_REG_MASTER_FADER_BASE 0x48 |
22460438 MK |
49 | #define LP5523_REG_CH1_PROG_START 0x4C |
50 | #define LP5523_REG_CH2_PROG_START 0x4D | |
51 | #define LP5523_REG_CH3_PROG_START 0x4E | |
12f022d2 | 52 | #define LP5523_REG_PROG_PAGE_SEL 0x4F |
0efba16c SO |
53 | #define LP5523_REG_PROG_MEM 0x50 |
54 | ||
12f022d2 | 55 | /* Bit description in registers */ |
0efba16c SO |
56 | #define LP5523_ENABLE 0x40 |
57 | #define LP5523_AUTO_INC 0x40 | |
58 | #define LP5523_PWR_SAVE 0x20 | |
59 | #define LP5523_PWM_PWR_SAVE 0x04 | |
0efba16c | 60 | #define LP5523_CP_AUTO 0x18 |
0efba16c | 61 | #define LP5523_AUTO_CLK 0x02 |
12f022d2 | 62 | |
0efba16c SO |
63 | #define LP5523_EN_LEDTEST 0x80 |
64 | #define LP5523_LEDTEST_DONE 0x80 | |
48068d5d | 65 | #define LP5523_RESET 0xFF |
0efba16c | 66 | #define LP5523_ADC_SHORTCIRC_LIM 80 |
0efba16c | 67 | #define LP5523_EXT_CLK_USED 0x08 |
22460438 | 68 | #define LP5523_ENG_STATUS_MASK 0x07 |
0efba16c | 69 | |
52da81ea TK |
70 | #define LP5523_FADER_MAPPING_MASK 0xC0 |
71 | #define LP5523_FADER_MAPPING_SHIFT 6 | |
72 | ||
db6eaf83 MWK |
73 | /* Memory Page Selection */ |
74 | #define LP5523_PAGE_ENG1 0 | |
75 | #define LP5523_PAGE_ENG2 1 | |
76 | #define LP5523_PAGE_ENG3 2 | |
45e611bf MK |
77 | #define LP5523_PAGE_MUX1 3 |
78 | #define LP5523_PAGE_MUX2 4 | |
79 | #define LP5523_PAGE_MUX3 5 | |
db6eaf83 MWK |
80 | |
81 | /* Program Memory Operations */ | |
82 | #define LP5523_MODE_ENG1_M 0x30 /* Operation Mode Register */ | |
83 | #define LP5523_MODE_ENG2_M 0x0C | |
84 | #define LP5523_MODE_ENG3_M 0x03 | |
85 | #define LP5523_LOAD_ENG1 0x10 | |
86 | #define LP5523_LOAD_ENG2 0x04 | |
87 | #define LP5523_LOAD_ENG3 0x01 | |
88 | ||
89 | #define LP5523_ENG1_IS_LOADING(mode) \ | |
90 | ((mode & LP5523_MODE_ENG1_M) == LP5523_LOAD_ENG1) | |
91 | #define LP5523_ENG2_IS_LOADING(mode) \ | |
92 | ((mode & LP5523_MODE_ENG2_M) == LP5523_LOAD_ENG2) | |
93 | #define LP5523_ENG3_IS_LOADING(mode) \ | |
94 | ((mode & LP5523_MODE_ENG3_M) == LP5523_LOAD_ENG3) | |
95 | ||
96 | #define LP5523_EXEC_ENG1_M 0x30 /* Enable Register */ | |
97 | #define LP5523_EXEC_ENG2_M 0x0C | |
98 | #define LP5523_EXEC_ENG3_M 0x03 | |
99 | #define LP5523_EXEC_M 0x3F | |
100 | #define LP5523_RUN_ENG1 0x20 | |
101 | #define LP5523_RUN_ENG2 0x08 | |
102 | #define LP5523_RUN_ENG3 0x02 | |
103 | ||
45e611bf MK |
104 | #define LED_ACTIVE(mux, led) (!!(mux & (0x0001 << led))) |
105 | ||
27d7704e KM |
106 | enum lp5523_chip_id { |
107 | LP5523, | |
108 | LP55231, | |
109 | }; | |
110 | ||
22460438 MK |
111 | static int lp5523_init_program_engine(struct lp55xx_chip *chip); |
112 | ||
db6eaf83 MWK |
113 | static inline void lp5523_wait_opmode_done(void) |
114 | { | |
115 | usleep_range(1000, 2000); | |
116 | } | |
117 | ||
a96bfa13 MWK |
118 | static void lp5523_set_led_current(struct lp55xx_led *led, u8 led_current) |
119 | { | |
120 | led->led_current = led_current; | |
121 | lp55xx_write(led->chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr, | |
122 | led_current); | |
123 | } | |
124 | ||
ffbdccdb | 125 | static int lp5523_post_init_device(struct lp55xx_chip *chip) |
0efba16c | 126 | { |
ffbdccdb | 127 | int ret; |
0efba16c | 128 | |
ffbdccdb | 129 | ret = lp55xx_write(chip, LP5523_REG_ENABLE, LP5523_ENABLE); |
632418bf MWK |
130 | if (ret) |
131 | return ret; | |
0efba16c | 132 | |
2e4840ed SO |
133 | /* Chip startup time is 500 us, 1 - 2 ms gives some margin */ |
134 | usleep_range(1000, 2000); | |
0efba16c | 135 | |
ffbdccdb | 136 | ret = lp55xx_write(chip, LP5523_REG_CONFIG, |
0efba16c SO |
137 | LP5523_AUTO_INC | LP5523_PWR_SAVE | |
138 | LP5523_CP_AUTO | LP5523_AUTO_CLK | | |
139 | LP5523_PWM_PWR_SAVE); | |
632418bf MWK |
140 | if (ret) |
141 | return ret; | |
0efba16c SO |
142 | |
143 | /* turn on all leds */ | |
ffbdccdb | 144 | ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_MSB, 0x01); |
632418bf | 145 | if (ret) |
1b21ec5a JH |
146 | return ret; |
147 | ||
22460438 MK |
148 | ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_LSB, 0xff); |
149 | if (ret) | |
150 | return ret; | |
151 | ||
152 | return lp5523_init_program_engine(chip); | |
0efba16c SO |
153 | } |
154 | ||
db6eaf83 | 155 | static void lp5523_load_engine(struct lp55xx_chip *chip) |
0efba16c | 156 | { |
db6eaf83 | 157 | enum lp55xx_engine_index idx = chip->engine_idx; |
4d1707c1 | 158 | static const u8 mask[] = { |
db6eaf83 MWK |
159 | [LP55XX_ENGINE_1] = LP5523_MODE_ENG1_M, |
160 | [LP55XX_ENGINE_2] = LP5523_MODE_ENG2_M, | |
161 | [LP55XX_ENGINE_3] = LP5523_MODE_ENG3_M, | |
162 | }; | |
163 | ||
4d1707c1 | 164 | static const u8 val[] = { |
db6eaf83 MWK |
165 | [LP55XX_ENGINE_1] = LP5523_LOAD_ENG1, |
166 | [LP55XX_ENGINE_2] = LP5523_LOAD_ENG2, | |
167 | [LP55XX_ENGINE_3] = LP5523_LOAD_ENG3, | |
168 | }; | |
169 | ||
b9e1730b MK |
170 | lp55xx_update_bits(chip, LP5523_REG_OP_MODE, mask[idx], val[idx]); |
171 | ||
172 | lp5523_wait_opmode_done(); | |
173 | } | |
174 | ||
175 | static void lp5523_load_engine_and_select_page(struct lp55xx_chip *chip) | |
176 | { | |
177 | enum lp55xx_engine_index idx = chip->engine_idx; | |
4d1707c1 | 178 | static const u8 page_sel[] = { |
db6eaf83 MWK |
179 | [LP55XX_ENGINE_1] = LP5523_PAGE_ENG1, |
180 | [LP55XX_ENGINE_2] = LP5523_PAGE_ENG2, | |
181 | [LP55XX_ENGINE_3] = LP5523_PAGE_ENG3, | |
182 | }; | |
183 | ||
b9e1730b | 184 | lp5523_load_engine(chip); |
db6eaf83 MWK |
185 | |
186 | lp55xx_write(chip, LP5523_REG_PROG_PAGE_SEL, page_sel[idx]); | |
0efba16c SO |
187 | } |
188 | ||
28c9266b | 189 | static void lp5523_stop_all_engines(struct lp55xx_chip *chip) |
0efba16c | 190 | { |
db6eaf83 MWK |
191 | lp55xx_write(chip, LP5523_REG_OP_MODE, 0); |
192 | lp5523_wait_opmode_done(); | |
193 | } | |
0efba16c | 194 | |
28c9266b MK |
195 | static void lp5523_stop_engine(struct lp55xx_chip *chip) |
196 | { | |
197 | enum lp55xx_engine_index idx = chip->engine_idx; | |
4d1707c1 | 198 | static const u8 mask[] = { |
28c9266b MK |
199 | [LP55XX_ENGINE_1] = LP5523_MODE_ENG1_M, |
200 | [LP55XX_ENGINE_2] = LP5523_MODE_ENG2_M, | |
201 | [LP55XX_ENGINE_3] = LP5523_MODE_ENG3_M, | |
202 | }; | |
203 | ||
204 | lp55xx_update_bits(chip, LP5523_REG_OP_MODE, mask[idx], 0); | |
205 | ||
206 | lp5523_wait_opmode_done(); | |
207 | } | |
208 | ||
db6eaf83 MWK |
209 | static void lp5523_turn_off_channels(struct lp55xx_chip *chip) |
210 | { | |
211 | int i; | |
0efba16c | 212 | |
db6eaf83 MWK |
213 | for (i = 0; i < LP5523_MAX_LEDS; i++) |
214 | lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + i, 0); | |
0efba16c SO |
215 | } |
216 | ||
db6eaf83 | 217 | static void lp5523_run_engine(struct lp55xx_chip *chip, bool start) |
0efba16c | 218 | { |
db6eaf83 MWK |
219 | int ret; |
220 | u8 mode; | |
221 | u8 exec; | |
0efba16c | 222 | |
db6eaf83 MWK |
223 | /* stop engine */ |
224 | if (!start) { | |
225 | lp5523_stop_engine(chip); | |
226 | lp5523_turn_off_channels(chip); | |
227 | return; | |
228 | } | |
0efba16c | 229 | |
db6eaf83 MWK |
230 | /* |
231 | * To run the engine, | |
232 | * operation mode and enable register should updated at the same time | |
233 | */ | |
0efba16c | 234 | |
db6eaf83 MWK |
235 | ret = lp55xx_read(chip, LP5523_REG_OP_MODE, &mode); |
236 | if (ret) | |
237 | return; | |
0efba16c | 238 | |
db6eaf83 MWK |
239 | ret = lp55xx_read(chip, LP5523_REG_ENABLE, &exec); |
240 | if (ret) | |
241 | return; | |
0efba16c | 242 | |
db6eaf83 MWK |
243 | /* change operation mode to RUN only when each engine is loading */ |
244 | if (LP5523_ENG1_IS_LOADING(mode)) { | |
245 | mode = (mode & ~LP5523_MODE_ENG1_M) | LP5523_RUN_ENG1; | |
246 | exec = (exec & ~LP5523_EXEC_ENG1_M) | LP5523_RUN_ENG1; | |
247 | } | |
0efba16c | 248 | |
db6eaf83 MWK |
249 | if (LP5523_ENG2_IS_LOADING(mode)) { |
250 | mode = (mode & ~LP5523_MODE_ENG2_M) | LP5523_RUN_ENG2; | |
251 | exec = (exec & ~LP5523_EXEC_ENG2_M) | LP5523_RUN_ENG2; | |
252 | } | |
0efba16c | 253 | |
db6eaf83 MWK |
254 | if (LP5523_ENG3_IS_LOADING(mode)) { |
255 | mode = (mode & ~LP5523_MODE_ENG3_M) | LP5523_RUN_ENG3; | |
256 | exec = (exec & ~LP5523_EXEC_ENG3_M) | LP5523_RUN_ENG3; | |
257 | } | |
258 | ||
259 | lp55xx_write(chip, LP5523_REG_OP_MODE, mode); | |
260 | lp5523_wait_opmode_done(); | |
261 | ||
262 | lp55xx_update_bits(chip, LP5523_REG_ENABLE, LP5523_EXEC_M, exec); | |
0efba16c SO |
263 | } |
264 | ||
22460438 MK |
265 | static int lp5523_init_program_engine(struct lp55xx_chip *chip) |
266 | { | |
267 | int i; | |
268 | int j; | |
269 | int ret; | |
270 | u8 status; | |
271 | /* one pattern per engine setting LED MUX start and stop addresses */ | |
272 | static const u8 pattern[][LP5523_PROGRAM_LENGTH] = { | |
273 | { 0x9c, 0x30, 0x9c, 0xb0, 0x9d, 0x80, 0xd8, 0x00, 0}, | |
274 | { 0x9c, 0x40, 0x9c, 0xc0, 0x9d, 0x80, 0xd8, 0x00, 0}, | |
275 | { 0x9c, 0x50, 0x9c, 0xd0, 0x9d, 0x80, 0xd8, 0x00, 0}, | |
276 | }; | |
277 | ||
278 | /* hardcode 32 bytes of memory for each engine from program memory */ | |
279 | ret = lp55xx_write(chip, LP5523_REG_CH1_PROG_START, 0x00); | |
280 | if (ret) | |
281 | return ret; | |
282 | ||
283 | ret = lp55xx_write(chip, LP5523_REG_CH2_PROG_START, 0x10); | |
284 | if (ret) | |
285 | return ret; | |
286 | ||
287 | ret = lp55xx_write(chip, LP5523_REG_CH3_PROG_START, 0x20); | |
288 | if (ret) | |
289 | return ret; | |
290 | ||
291 | /* write LED MUX address space for each engine */ | |
292 | for (i = LP55XX_ENGINE_1; i <= LP55XX_ENGINE_3; i++) { | |
293 | chip->engine_idx = i; | |
294 | lp5523_load_engine_and_select_page(chip); | |
295 | ||
296 | for (j = 0; j < LP5523_PROGRAM_LENGTH; j++) { | |
297 | ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + j, | |
298 | pattern[i - 1][j]); | |
299 | if (ret) | |
300 | goto out; | |
301 | } | |
302 | } | |
303 | ||
304 | lp5523_run_engine(chip, true); | |
305 | ||
306 | /* Let the programs run for couple of ms and check the engine status */ | |
307 | usleep_range(3000, 6000); | |
6647f7a0 PP |
308 | ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); |
309 | if (ret) | |
310 | goto out; | |
22460438 MK |
311 | status &= LP5523_ENG_STATUS_MASK; |
312 | ||
313 | if (status != LP5523_ENG_STATUS_MASK) { | |
314 | dev_err(&chip->cl->dev, | |
f2ea85d7 | 315 | "could not configure LED engine, status = 0x%.2x\n", |
22460438 MK |
316 | status); |
317 | ret = -1; | |
318 | } | |
319 | ||
320 | out: | |
28c9266b | 321 | lp5523_stop_all_engines(chip); |
22460438 MK |
322 | return ret; |
323 | } | |
324 | ||
db6eaf83 MWK |
325 | static int lp5523_update_program_memory(struct lp55xx_chip *chip, |
326 | const u8 *data, size_t size) | |
0efba16c | 327 | { |
db6eaf83 | 328 | u8 pattern[LP5523_PROGRAM_LENGTH] = {0}; |
7105e464 | 329 | unsigned int cmd; |
db6eaf83 | 330 | char c[3]; |
db6eaf83 | 331 | int nrchars; |
db6eaf83 | 332 | int ret; |
2f733cad MK |
333 | int offset = 0; |
334 | int i = 0; | |
0efba16c | 335 | |
db6eaf83 MWK |
336 | while ((offset < size - 1) && (i < LP5523_PROGRAM_LENGTH)) { |
337 | /* separate sscanfs because length is working only for %s */ | |
338 | ret = sscanf(data + offset, "%2s%n ", c, &nrchars); | |
339 | if (ret != 1) | |
340 | goto err; | |
0efba16c | 341 | |
db6eaf83 MWK |
342 | ret = sscanf(c, "%2x", &cmd); |
343 | if (ret != 1) | |
344 | goto err; | |
0efba16c | 345 | |
db6eaf83 MWK |
346 | pattern[i] = (u8)cmd; |
347 | offset += nrchars; | |
348 | i++; | |
349 | } | |
0efba16c | 350 | |
db6eaf83 MWK |
351 | /* Each instruction is 16bit long. Check that length is even */ |
352 | if (i % 2) | |
353 | goto err; | |
0efba16c | 354 | |
2f733cad | 355 | for (i = 0; i < LP5523_PROGRAM_LENGTH; i++) { |
45e611bf | 356 | ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + i, pattern[i]); |
e70988d1 | 357 | if (ret) |
45e611bf | 358 | return -EINVAL; |
45e611bf MK |
359 | } |
360 | ||
45e611bf | 361 | return size; |
0efba16c | 362 | |
db6eaf83 MWK |
363 | err: |
364 | dev_err(&chip->cl->dev, "wrong pattern format\n"); | |
365 | return -EINVAL; | |
0efba16c | 366 | } |
0efba16c | 367 | |
db6eaf83 | 368 | static void lp5523_firmware_loaded(struct lp55xx_chip *chip) |
0efba16c | 369 | { |
db6eaf83 | 370 | const struct firmware *fw = chip->fw; |
fbac0812 | 371 | |
db6eaf83 MWK |
372 | if (fw->size > LP5523_PROGRAM_LENGTH) { |
373 | dev_err(&chip->cl->dev, "firmware data size overflow: %zu\n", | |
374 | fw->size); | |
375 | return; | |
376 | } | |
0efba16c | 377 | |
db6eaf83 | 378 | /* |
d1b7c934 | 379 | * Program memory sequence |
db6eaf83 MWK |
380 | * 1) set engine mode to "LOAD" |
381 | * 2) write firmware data into program memory | |
382 | */ | |
0efba16c | 383 | |
b9e1730b | 384 | lp5523_load_engine_and_select_page(chip); |
db6eaf83 | 385 | lp5523_update_program_memory(chip, fw->data, fw->size); |
0efba16c | 386 | } |
0efba16c | 387 | |
45e611bf MK |
388 | static ssize_t show_engine_mode(struct device *dev, |
389 | struct device_attribute *attr, | |
390 | char *buf, int nr) | |
391 | { | |
392 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
393 | struct lp55xx_chip *chip = led->chip; | |
394 | enum lp55xx_engine_mode mode = chip->engines[nr - 1].mode; | |
395 | ||
396 | switch (mode) { | |
397 | case LP55XX_ENGINE_RUN: | |
398 | return sprintf(buf, "run\n"); | |
399 | case LP55XX_ENGINE_LOAD: | |
400 | return sprintf(buf, "load\n"); | |
401 | case LP55XX_ENGINE_DISABLED: | |
402 | default: | |
403 | return sprintf(buf, "disabled\n"); | |
404 | } | |
405 | } | |
406 | show_mode(1) | |
407 | show_mode(2) | |
408 | show_mode(3) | |
409 | ||
410 | static ssize_t store_engine_mode(struct device *dev, | |
411 | struct device_attribute *attr, | |
412 | const char *buf, size_t len, int nr) | |
413 | { | |
414 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
415 | struct lp55xx_chip *chip = led->chip; | |
416 | struct lp55xx_engine *engine = &chip->engines[nr - 1]; | |
417 | ||
418 | mutex_lock(&chip->lock); | |
419 | ||
420 | chip->engine_idx = nr; | |
421 | ||
422 | if (!strncmp(buf, "run", 3)) { | |
423 | lp5523_run_engine(chip, true); | |
424 | engine->mode = LP55XX_ENGINE_RUN; | |
425 | } else if (!strncmp(buf, "load", 4)) { | |
426 | lp5523_stop_engine(chip); | |
427 | lp5523_load_engine(chip); | |
428 | engine->mode = LP55XX_ENGINE_LOAD; | |
429 | } else if (!strncmp(buf, "disabled", 8)) { | |
430 | lp5523_stop_engine(chip); | |
431 | engine->mode = LP55XX_ENGINE_DISABLED; | |
432 | } | |
433 | ||
434 | mutex_unlock(&chip->lock); | |
435 | ||
436 | return len; | |
437 | } | |
438 | store_mode(1) | |
439 | store_mode(2) | |
440 | store_mode(3) | |
441 | ||
442 | static int lp5523_mux_parse(const char *buf, u16 *mux, size_t len) | |
443 | { | |
444 | u16 tmp_mux = 0; | |
445 | int i; | |
446 | ||
447 | len = min_t(int, len, LP5523_MAX_LEDS); | |
448 | ||
449 | for (i = 0; i < len; i++) { | |
450 | switch (buf[i]) { | |
451 | case '1': | |
452 | tmp_mux |= (1 << i); | |
453 | break; | |
454 | case '0': | |
455 | break; | |
456 | case '\n': | |
457 | i = len; | |
458 | break; | |
459 | default: | |
460 | return -1; | |
461 | } | |
462 | } | |
463 | *mux = tmp_mux; | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | static void lp5523_mux_to_array(u16 led_mux, char *array) | |
469 | { | |
470 | int i, pos = 0; | |
7105e464 | 471 | |
45e611bf MK |
472 | for (i = 0; i < LP5523_MAX_LEDS; i++) |
473 | pos += sprintf(array + pos, "%x", LED_ACTIVE(led_mux, i)); | |
474 | ||
475 | array[pos] = '\0'; | |
476 | } | |
477 | ||
478 | static ssize_t show_engine_leds(struct device *dev, | |
479 | struct device_attribute *attr, | |
480 | char *buf, int nr) | |
481 | { | |
482 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
483 | struct lp55xx_chip *chip = led->chip; | |
484 | char mux[LP5523_MAX_LEDS + 1]; | |
485 | ||
486 | lp5523_mux_to_array(chip->engines[nr - 1].led_mux, mux); | |
487 | ||
488 | return sprintf(buf, "%s\n", mux); | |
489 | } | |
490 | show_leds(1) | |
491 | show_leds(2) | |
492 | show_leds(3) | |
493 | ||
494 | static int lp5523_load_mux(struct lp55xx_chip *chip, u16 mux, int nr) | |
495 | { | |
496 | struct lp55xx_engine *engine = &chip->engines[nr - 1]; | |
497 | int ret; | |
4d1707c1 | 498 | static const u8 mux_page[] = { |
45e611bf MK |
499 | [LP55XX_ENGINE_1] = LP5523_PAGE_MUX1, |
500 | [LP55XX_ENGINE_2] = LP5523_PAGE_MUX2, | |
501 | [LP55XX_ENGINE_3] = LP5523_PAGE_MUX3, | |
502 | }; | |
503 | ||
504 | lp5523_load_engine(chip); | |
505 | ||
506 | ret = lp55xx_write(chip, LP5523_REG_PROG_PAGE_SEL, mux_page[nr]); | |
507 | if (ret) | |
508 | return ret; | |
509 | ||
7105e464 | 510 | ret = lp55xx_write(chip, LP5523_REG_PROG_MEM, (u8)(mux >> 8)); |
45e611bf MK |
511 | if (ret) |
512 | return ret; | |
513 | ||
514 | ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + 1, (u8)(mux)); | |
515 | if (ret) | |
516 | return ret; | |
517 | ||
518 | engine->led_mux = mux; | |
519 | return 0; | |
520 | } | |
521 | ||
522 | static ssize_t store_engine_leds(struct device *dev, | |
523 | struct device_attribute *attr, | |
524 | const char *buf, size_t len, int nr) | |
525 | { | |
526 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
527 | struct lp55xx_chip *chip = led->chip; | |
528 | struct lp55xx_engine *engine = &chip->engines[nr - 1]; | |
529 | u16 mux = 0; | |
530 | ssize_t ret; | |
531 | ||
532 | if (lp5523_mux_parse(buf, &mux, len)) | |
533 | return -EINVAL; | |
534 | ||
535 | mutex_lock(&chip->lock); | |
536 | ||
537 | chip->engine_idx = nr; | |
538 | ret = -EINVAL; | |
539 | ||
540 | if (engine->mode != LP55XX_ENGINE_LOAD) | |
541 | goto leave; | |
542 | ||
543 | if (lp5523_load_mux(chip, mux, nr)) | |
544 | goto leave; | |
545 | ||
546 | ret = len; | |
547 | leave: | |
548 | mutex_unlock(&chip->lock); | |
549 | return ret; | |
550 | } | |
551 | store_leds(1) | |
552 | store_leds(2) | |
553 | store_leds(3) | |
554 | ||
555 | static ssize_t store_engine_load(struct device *dev, | |
556 | struct device_attribute *attr, | |
557 | const char *buf, size_t len, int nr) | |
558 | { | |
559 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
560 | struct lp55xx_chip *chip = led->chip; | |
e70988d1 | 561 | int ret; |
45e611bf MK |
562 | |
563 | mutex_lock(&chip->lock); | |
564 | ||
565 | chip->engine_idx = nr; | |
566 | lp5523_load_engine_and_select_page(chip); | |
e70988d1 | 567 | ret = lp5523_update_program_memory(chip, buf, len); |
45e611bf MK |
568 | |
569 | mutex_unlock(&chip->lock); | |
570 | ||
e70988d1 | 571 | return ret; |
45e611bf MK |
572 | } |
573 | store_load(1) | |
574 | store_load(2) | |
575 | store_load(3) | |
576 | ||
0efba16c SO |
577 | static ssize_t lp5523_selftest(struct device *dev, |
578 | struct device_attribute *attr, | |
579 | char *buf) | |
580 | { | |
9ca3bd80 MWK |
581 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); |
582 | struct lp55xx_chip *chip = led->chip; | |
583 | struct lp55xx_platform_data *pdata = chip->pdata; | |
17c13c72 MZ |
584 | int ret, pos = 0; |
585 | u8 status, adc, vdd, i; | |
0efba16c SO |
586 | |
587 | mutex_lock(&chip->lock); | |
588 | ||
9ca3bd80 | 589 | ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); |
0efba16c SO |
590 | if (ret < 0) |
591 | goto fail; | |
592 | ||
593 | /* Check that ext clock is really in use if requested */ | |
9ca3bd80 | 594 | if (pdata->clock_mode == LP55XX_CLOCK_EXT) { |
0efba16c SO |
595 | if ((status & LP5523_EXT_CLK_USED) == 0) |
596 | goto fail; | |
9ca3bd80 | 597 | } |
0efba16c SO |
598 | |
599 | /* Measure VDD (i.e. VBAT) first (channel 16 corresponds to VDD) */ | |
9ca3bd80 | 600 | lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL, LP5523_EN_LEDTEST | 16); |
2e4840ed | 601 | usleep_range(3000, 6000); /* ADC conversion time is typically 2.7 ms */ |
9ca3bd80 | 602 | ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); |
1b21ec5a JH |
603 | if (ret < 0) |
604 | goto fail; | |
605 | ||
0efba16c | 606 | if (!(status & LP5523_LEDTEST_DONE)) |
2e4840ed | 607 | usleep_range(3000, 6000); /* Was not ready. Wait little bit */ |
0efba16c | 608 | |
9ca3bd80 | 609 | ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &vdd); |
1b21ec5a JH |
610 | if (ret < 0) |
611 | goto fail; | |
612 | ||
0efba16c SO |
613 | vdd--; /* There may be some fluctuation in measurement */ |
614 | ||
17c13c72 MZ |
615 | for (i = 0; i < pdata->num_channels; i++) { |
616 | /* Skip disabled channels */ | |
9ca3bd80 | 617 | if (pdata->led_config[i].led_current == 0) |
0efba16c SO |
618 | continue; |
619 | ||
620 | /* Set default current */ | |
17c13c72 | 621 | lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr, |
9ca3bd80 | 622 | pdata->led_config[i].led_current); |
0efba16c | 623 | |
17c13c72 MZ |
624 | lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr, |
625 | 0xff); | |
2e4840ed SO |
626 | /* let current stabilize 2 - 4ms before measurements start */ |
627 | usleep_range(2000, 4000); | |
9ca3bd80 | 628 | lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL, |
17c13c72 | 629 | LP5523_EN_LEDTEST | led->chan_nr); |
2e4840ed SO |
630 | /* ADC conversion time is 2.7 ms typically */ |
631 | usleep_range(3000, 6000); | |
9ca3bd80 | 632 | ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); |
1b21ec5a JH |
633 | if (ret < 0) |
634 | goto fail; | |
635 | ||
0efba16c | 636 | if (!(status & LP5523_LEDTEST_DONE)) |
17c13c72 | 637 | usleep_range(3000, 6000); /* Was not ready. Wait. */ |
9ca3bd80 MWK |
638 | |
639 | ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &adc); | |
1b21ec5a JH |
640 | if (ret < 0) |
641 | goto fail; | |
0efba16c SO |
642 | |
643 | if (adc >= vdd || adc < LP5523_ADC_SHORTCIRC_LIM) | |
17c13c72 MZ |
644 | pos += sprintf(buf + pos, "LED %d FAIL\n", |
645 | led->chan_nr); | |
0efba16c | 646 | |
17c13c72 MZ |
647 | lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr, |
648 | 0x00); | |
0efba16c SO |
649 | |
650 | /* Restore current */ | |
17c13c72 MZ |
651 | lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr, |
652 | led->led_current); | |
0efba16c SO |
653 | led++; |
654 | } | |
655 | if (pos == 0) | |
656 | pos = sprintf(buf, "OK\n"); | |
657 | goto release_lock; | |
658 | fail: | |
659 | pos = sprintf(buf, "FAIL\n"); | |
660 | ||
661 | release_lock: | |
662 | mutex_unlock(&chip->lock); | |
663 | ||
664 | return pos; | |
665 | } | |
666 | ||
52da81ea TK |
667 | #define show_fader(nr) \ |
668 | static ssize_t show_master_fader##nr(struct device *dev, \ | |
669 | struct device_attribute *attr, \ | |
670 | char *buf) \ | |
671 | { \ | |
672 | return show_master_fader(dev, attr, buf, nr); \ | |
673 | } | |
674 | ||
675 | #define store_fader(nr) \ | |
676 | static ssize_t store_master_fader##nr(struct device *dev, \ | |
677 | struct device_attribute *attr, \ | |
678 | const char *buf, size_t len) \ | |
679 | { \ | |
680 | return store_master_fader(dev, attr, buf, len, nr); \ | |
681 | } | |
682 | ||
683 | static ssize_t show_master_fader(struct device *dev, | |
684 | struct device_attribute *attr, | |
685 | char *buf, int nr) | |
686 | { | |
687 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
688 | struct lp55xx_chip *chip = led->chip; | |
689 | int ret; | |
690 | u8 val; | |
691 | ||
692 | mutex_lock(&chip->lock); | |
693 | ret = lp55xx_read(chip, LP5523_REG_MASTER_FADER_BASE + nr - 1, &val); | |
694 | mutex_unlock(&chip->lock); | |
695 | ||
696 | if (ret == 0) | |
697 | ret = sprintf(buf, "%u\n", val); | |
698 | ||
699 | return ret; | |
700 | } | |
701 | show_fader(1) | |
702 | show_fader(2) | |
703 | show_fader(3) | |
704 | ||
705 | static ssize_t store_master_fader(struct device *dev, | |
706 | struct device_attribute *attr, | |
707 | const char *buf, size_t len, int nr) | |
708 | { | |
709 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
710 | struct lp55xx_chip *chip = led->chip; | |
711 | int ret; | |
712 | unsigned long val; | |
713 | ||
714 | if (kstrtoul(buf, 0, &val)) | |
715 | return -EINVAL; | |
716 | ||
717 | if (val > 0xff) | |
718 | return -EINVAL; | |
719 | ||
720 | mutex_lock(&chip->lock); | |
721 | ret = lp55xx_write(chip, LP5523_REG_MASTER_FADER_BASE + nr - 1, | |
722 | (u8)val); | |
723 | mutex_unlock(&chip->lock); | |
724 | ||
725 | if (ret == 0) | |
726 | ret = len; | |
727 | ||
728 | return ret; | |
729 | } | |
730 | store_fader(1) | |
731 | store_fader(2) | |
732 | store_fader(3) | |
733 | ||
734 | static ssize_t show_master_fader_leds(struct device *dev, | |
735 | struct device_attribute *attr, | |
736 | char *buf) | |
737 | { | |
738 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
739 | struct lp55xx_chip *chip = led->chip; | |
740 | int i, ret, pos = 0; | |
741 | u8 val; | |
742 | ||
743 | mutex_lock(&chip->lock); | |
744 | ||
745 | for (i = 0; i < LP5523_MAX_LEDS; i++) { | |
746 | ret = lp55xx_read(chip, LP5523_REG_LED_CTRL_BASE + i, &val); | |
747 | if (ret) | |
748 | goto leave; | |
749 | ||
750 | val = (val & LP5523_FADER_MAPPING_MASK) | |
751 | >> LP5523_FADER_MAPPING_SHIFT; | |
752 | if (val > 3) { | |
753 | ret = -EINVAL; | |
754 | goto leave; | |
755 | } | |
756 | buf[pos++] = val + '0'; | |
757 | } | |
758 | buf[pos++] = '\n'; | |
759 | ret = pos; | |
760 | leave: | |
761 | mutex_unlock(&chip->lock); | |
762 | return ret; | |
763 | } | |
764 | ||
765 | static ssize_t store_master_fader_leds(struct device *dev, | |
766 | struct device_attribute *attr, | |
767 | const char *buf, size_t len) | |
768 | { | |
769 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
770 | struct lp55xx_chip *chip = led->chip; | |
771 | int i, n, ret; | |
772 | u8 val; | |
773 | ||
774 | n = min_t(int, len, LP5523_MAX_LEDS); | |
775 | ||
776 | mutex_lock(&chip->lock); | |
777 | ||
778 | for (i = 0; i < n; i++) { | |
779 | if (buf[i] >= '0' && buf[i] <= '3') { | |
780 | val = (buf[i] - '0') << LP5523_FADER_MAPPING_SHIFT; | |
781 | ret = lp55xx_update_bits(chip, | |
782 | LP5523_REG_LED_CTRL_BASE + i, | |
783 | LP5523_FADER_MAPPING_MASK, | |
784 | val); | |
785 | if (ret) | |
786 | goto leave; | |
787 | } else { | |
788 | ret = -EINVAL; | |
789 | goto leave; | |
790 | } | |
791 | } | |
792 | ret = len; | |
793 | leave: | |
794 | mutex_unlock(&chip->lock); | |
795 | return ret; | |
796 | } | |
797 | ||
40473132 DM |
798 | static int lp5523_multicolor_brightness(struct lp55xx_led *led) |
799 | { | |
800 | struct lp55xx_chip *chip = led->chip; | |
801 | int ret; | |
802 | int i; | |
803 | ||
804 | mutex_lock(&chip->lock); | |
805 | for (i = 0; i < led->mc_cdev.num_colors; i++) { | |
806 | ret = lp55xx_write(chip, | |
807 | LP5523_REG_LED_PWM_BASE + | |
808 | led->mc_cdev.subled_info[i].channel, | |
809 | led->mc_cdev.subled_info[i].brightness); | |
810 | if (ret) | |
811 | break; | |
812 | } | |
813 | mutex_unlock(&chip->lock); | |
814 | return ret; | |
815 | } | |
816 | ||
95b2af63 | 817 | static int lp5523_led_brightness(struct lp55xx_led *led) |
0efba16c | 818 | { |
a6e4679a | 819 | struct lp55xx_chip *chip = led->chip; |
95b2af63 | 820 | int ret; |
0efba16c SO |
821 | |
822 | mutex_lock(&chip->lock); | |
95b2af63 | 823 | ret = lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr, |
0efba16c | 824 | led->brightness); |
0efba16c | 825 | mutex_unlock(&chip->lock); |
95b2af63 | 826 | return ret; |
0efba16c SO |
827 | } |
828 | ||
45e611bf MK |
829 | static LP55XX_DEV_ATTR_RW(engine1_mode, show_engine1_mode, store_engine1_mode); |
830 | static LP55XX_DEV_ATTR_RW(engine2_mode, show_engine2_mode, store_engine2_mode); | |
831 | static LP55XX_DEV_ATTR_RW(engine3_mode, show_engine3_mode, store_engine3_mode); | |
832 | static LP55XX_DEV_ATTR_RW(engine1_leds, show_engine1_leds, store_engine1_leds); | |
833 | static LP55XX_DEV_ATTR_RW(engine2_leds, show_engine2_leds, store_engine2_leds); | |
834 | static LP55XX_DEV_ATTR_RW(engine3_leds, show_engine3_leds, store_engine3_leds); | |
835 | static LP55XX_DEV_ATTR_WO(engine1_load, store_engine1_load); | |
836 | static LP55XX_DEV_ATTR_WO(engine2_load, store_engine2_load); | |
837 | static LP55XX_DEV_ATTR_WO(engine3_load, store_engine3_load); | |
838 | static LP55XX_DEV_ATTR_RO(selftest, lp5523_selftest); | |
52da81ea TK |
839 | static LP55XX_DEV_ATTR_RW(master_fader1, show_master_fader1, |
840 | store_master_fader1); | |
841 | static LP55XX_DEV_ATTR_RW(master_fader2, show_master_fader2, | |
842 | store_master_fader2); | |
843 | static LP55XX_DEV_ATTR_RW(master_fader3, show_master_fader3, | |
844 | store_master_fader3); | |
845 | static LP55XX_DEV_ATTR_RW(master_fader_leds, show_master_fader_leds, | |
846 | store_master_fader_leds); | |
0efba16c SO |
847 | |
848 | static struct attribute *lp5523_attributes[] = { | |
45e611bf MK |
849 | &dev_attr_engine1_mode.attr, |
850 | &dev_attr_engine2_mode.attr, | |
851 | &dev_attr_engine3_mode.attr, | |
852 | &dev_attr_engine1_load.attr, | |
853 | &dev_attr_engine2_load.attr, | |
854 | &dev_attr_engine3_load.attr, | |
855 | &dev_attr_engine1_leds.attr, | |
856 | &dev_attr_engine2_leds.attr, | |
857 | &dev_attr_engine3_leds.attr, | |
0efba16c | 858 | &dev_attr_selftest.attr, |
52da81ea TK |
859 | &dev_attr_master_fader1.attr, |
860 | &dev_attr_master_fader2.attr, | |
861 | &dev_attr_master_fader3.attr, | |
862 | &dev_attr_master_fader_leds.attr, | |
f1625842 | 863 | NULL, |
0efba16c SO |
864 | }; |
865 | ||
866 | static const struct attribute_group lp5523_group = { | |
867 | .attrs = lp5523_attributes, | |
868 | }; | |
869 | ||
48068d5d MWK |
870 | /* Chip specific configurations */ |
871 | static struct lp55xx_device_config lp5523_cfg = { | |
872 | .reset = { | |
873 | .addr = LP5523_REG_RESET, | |
874 | .val = LP5523_RESET, | |
875 | }, | |
e3a700d8 MWK |
876 | .enable = { |
877 | .addr = LP5523_REG_ENABLE, | |
878 | .val = LP5523_ENABLE, | |
879 | }, | |
0e202346 | 880 | .max_channel = LP5523_MAX_LEDS, |
ffbdccdb | 881 | .post_init_device = lp5523_post_init_device, |
95b2af63 | 882 | .brightness_fn = lp5523_led_brightness, |
40473132 | 883 | .multicolor_brightness_fn = lp5523_multicolor_brightness, |
a96bfa13 | 884 | .set_led_current = lp5523_set_led_current, |
db6eaf83 MWK |
885 | .firmware_cb = lp5523_firmware_loaded, |
886 | .run_engine = lp5523_run_engine, | |
e73c0ce6 | 887 | .dev_attr_group = &lp5523_group, |
48068d5d MWK |
888 | }; |
889 | ||
69674a71 | 890 | static int lp5523_probe(struct i2c_client *client) |
0efba16c | 891 | { |
69674a71 | 892 | const struct i2c_device_id *id = i2c_client_get_device_id(client); |
22ebeb48 | 893 | int ret; |
6a0c9a47 MWK |
894 | struct lp55xx_chip *chip; |
895 | struct lp55xx_led *led; | |
ed133352 | 896 | struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev); |
8853c95e | 897 | struct device_node *np = dev_of_node(&client->dev); |
7542a04b | 898 | |
92a81562 DM |
899 | chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); |
900 | if (!chip) | |
901 | return -ENOMEM; | |
902 | ||
903 | chip->cfg = &lp5523_cfg; | |
904 | ||
ed133352 | 905 | if (!pdata) { |
7542a04b | 906 | if (np) { |
92a81562 DM |
907 | pdata = lp55xx_of_populate_pdata(&client->dev, np, |
908 | chip); | |
ed133352 MK |
909 | if (IS_ERR(pdata)) |
910 | return PTR_ERR(pdata); | |
7542a04b LW |
911 | } else { |
912 | dev_err(&client->dev, "no platform data\n"); | |
913 | return -EINVAL; | |
914 | } | |
0efba16c SO |
915 | } |
916 | ||
a86854d0 KC |
917 | led = devm_kcalloc(&client->dev, |
918 | pdata->num_channels, sizeof(*led), GFP_KERNEL); | |
6a0c9a47 MWK |
919 | if (!led) |
920 | return -ENOMEM; | |
921 | ||
922 | chip->cl = client; | |
923 | chip->pdata = pdata; | |
924 | ||
925 | mutex_init(&chip->lock); | |
0efba16c | 926 | |
6a0c9a47 | 927 | i2c_set_clientdata(client, led); |
0efba16c | 928 | |
22ebeb48 | 929 | ret = lp55xx_init_device(chip); |
0efba16c | 930 | if (ret) |
f6c64c6f | 931 | goto err_init; |
0efba16c | 932 | |
56a1e9ad | 933 | dev_info(&client->dev, "%s Programmable led chip found\n", id->name); |
0efba16c | 934 | |
9e9b3db1 | 935 | ret = lp55xx_register_leds(led, chip); |
f6524808 | 936 | if (ret) |
c732eaf0 | 937 | goto err_out; |
0efba16c | 938 | |
e73c0ce6 | 939 | ret = lp55xx_register_sysfs(chip); |
0efba16c SO |
940 | if (ret) { |
941 | dev_err(&client->dev, "registering sysfs failed\n"); | |
c732eaf0 | 942 | goto err_out; |
0efba16c | 943 | } |
e73c0ce6 MWK |
944 | |
945 | return 0; | |
946 | ||
c732eaf0 | 947 | err_out: |
6ce61762 | 948 | lp55xx_deinit_device(chip); |
f6c64c6f | 949 | err_init: |
0efba16c SO |
950 | return ret; |
951 | } | |
952 | ||
ed5c2f5f | 953 | static void lp5523_remove(struct i2c_client *client) |
0efba16c | 954 | { |
6ce61762 MWK |
955 | struct lp55xx_led *led = i2c_get_clientdata(client); |
956 | struct lp55xx_chip *chip = led->chip; | |
0efba16c | 957 | |
28c9266b | 958 | lp5523_stop_all_engines(chip); |
87cc4bde | 959 | lp55xx_unregister_sysfs(chip); |
6ce61762 | 960 | lp55xx_deinit_device(chip); |
0efba16c SO |
961 | } |
962 | ||
963 | static const struct i2c_device_id lp5523_id[] = { | |
27d7704e KM |
964 | { "lp5523", LP5523 }, |
965 | { "lp55231", LP55231 }, | |
0efba16c SO |
966 | { } |
967 | }; | |
968 | ||
969 | MODULE_DEVICE_TABLE(i2c, lp5523_id); | |
970 | ||
33c88b67 AL |
971 | #ifdef CONFIG_OF |
972 | static const struct of_device_id of_lp5523_leds_match[] = { | |
973 | { .compatible = "national,lp5523", }, | |
9ef8c877 | 974 | { .compatible = "ti,lp55231", }, |
33c88b67 AL |
975 | {}, |
976 | }; | |
977 | ||
978 | MODULE_DEVICE_TABLE(of, of_lp5523_leds_match); | |
979 | #endif | |
980 | ||
0efba16c SO |
981 | static struct i2c_driver lp5523_driver = { |
982 | .driver = { | |
27d7704e | 983 | .name = "lp5523x", |
33c88b67 | 984 | .of_match_table = of_match_ptr(of_lp5523_leds_match), |
0efba16c | 985 | }, |
69674a71 | 986 | .probe_new = lp5523_probe, |
0efba16c SO |
987 | .remove = lp5523_remove, |
988 | .id_table = lp5523_id, | |
989 | }; | |
990 | ||
09a0d183 | 991 | module_i2c_driver(lp5523_driver); |
0efba16c SO |
992 | |
993 | MODULE_AUTHOR("Mathias Nyman <mathias.nyman@nokia.com>"); | |
a2387cb9 | 994 | MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>"); |
0efba16c SO |
995 | MODULE_DESCRIPTION("LP5523 LED engine"); |
996 | MODULE_LICENSE("GPL"); |