Commit | Line | Data |
---|---|---|
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 | |
54a7bef5 MZ |
60 | #define LP5523_CP_MODE_MASK 0x18 |
61 | #define LP5523_CP_MODE_SHIFT 3 | |
0efba16c | 62 | #define LP5523_AUTO_CLK 0x02 |
54a7bef5 MZ |
63 | #define LP5523_DEFAULT_CONFIG \ |
64 | (LP5523_AUTO_INC | LP5523_PWR_SAVE | LP5523_AUTO_CLK | LP5523_PWM_PWR_SAVE) | |
12f022d2 | 65 | |
0efba16c SO |
66 | #define LP5523_EN_LEDTEST 0x80 |
67 | #define LP5523_LEDTEST_DONE 0x80 | |
48068d5d | 68 | #define LP5523_RESET 0xFF |
0efba16c | 69 | #define LP5523_ADC_SHORTCIRC_LIM 80 |
0efba16c | 70 | #define LP5523_EXT_CLK_USED 0x08 |
22460438 | 71 | #define LP5523_ENG_STATUS_MASK 0x07 |
0efba16c | 72 | |
52da81ea TK |
73 | #define LP5523_FADER_MAPPING_MASK 0xC0 |
74 | #define LP5523_FADER_MAPPING_SHIFT 6 | |
75 | ||
db6eaf83 MWK |
76 | /* Memory Page Selection */ |
77 | #define LP5523_PAGE_ENG1 0 | |
78 | #define LP5523_PAGE_ENG2 1 | |
79 | #define LP5523_PAGE_ENG3 2 | |
45e611bf MK |
80 | #define LP5523_PAGE_MUX1 3 |
81 | #define LP5523_PAGE_MUX2 4 | |
82 | #define LP5523_PAGE_MUX3 5 | |
db6eaf83 MWK |
83 | |
84 | /* Program Memory Operations */ | |
85 | #define LP5523_MODE_ENG1_M 0x30 /* Operation Mode Register */ | |
86 | #define LP5523_MODE_ENG2_M 0x0C | |
87 | #define LP5523_MODE_ENG3_M 0x03 | |
88 | #define LP5523_LOAD_ENG1 0x10 | |
89 | #define LP5523_LOAD_ENG2 0x04 | |
90 | #define LP5523_LOAD_ENG3 0x01 | |
91 | ||
92 | #define LP5523_ENG1_IS_LOADING(mode) \ | |
93 | ((mode & LP5523_MODE_ENG1_M) == LP5523_LOAD_ENG1) | |
94 | #define LP5523_ENG2_IS_LOADING(mode) \ | |
95 | ((mode & LP5523_MODE_ENG2_M) == LP5523_LOAD_ENG2) | |
96 | #define LP5523_ENG3_IS_LOADING(mode) \ | |
97 | ((mode & LP5523_MODE_ENG3_M) == LP5523_LOAD_ENG3) | |
98 | ||
99 | #define LP5523_EXEC_ENG1_M 0x30 /* Enable Register */ | |
100 | #define LP5523_EXEC_ENG2_M 0x0C | |
101 | #define LP5523_EXEC_ENG3_M 0x03 | |
102 | #define LP5523_EXEC_M 0x3F | |
103 | #define LP5523_RUN_ENG1 0x20 | |
104 | #define LP5523_RUN_ENG2 0x08 | |
105 | #define LP5523_RUN_ENG3 0x02 | |
106 | ||
45e611bf MK |
107 | #define LED_ACTIVE(mux, led) (!!(mux & (0x0001 << led))) |
108 | ||
27d7704e KM |
109 | enum lp5523_chip_id { |
110 | LP5523, | |
111 | LP55231, | |
112 | }; | |
113 | ||
22460438 MK |
114 | static int lp5523_init_program_engine(struct lp55xx_chip *chip); |
115 | ||
db6eaf83 MWK |
116 | static inline void lp5523_wait_opmode_done(void) |
117 | { | |
118 | usleep_range(1000, 2000); | |
119 | } | |
120 | ||
a96bfa13 MWK |
121 | static void lp5523_set_led_current(struct lp55xx_led *led, u8 led_current) |
122 | { | |
123 | led->led_current = led_current; | |
124 | lp55xx_write(led->chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr, | |
125 | led_current); | |
126 | } | |
127 | ||
ffbdccdb | 128 | static int lp5523_post_init_device(struct lp55xx_chip *chip) |
0efba16c | 129 | { |
ffbdccdb | 130 | int ret; |
54a7bef5 | 131 | int val; |
0efba16c | 132 | |
ffbdccdb | 133 | ret = lp55xx_write(chip, LP5523_REG_ENABLE, LP5523_ENABLE); |
632418bf MWK |
134 | if (ret) |
135 | return ret; | |
0efba16c | 136 | |
2e4840ed SO |
137 | /* Chip startup time is 500 us, 1 - 2 ms gives some margin */ |
138 | usleep_range(1000, 2000); | |
0efba16c | 139 | |
54a7bef5 MZ |
140 | val = LP5523_DEFAULT_CONFIG; |
141 | val |= (chip->pdata->charge_pump_mode << LP5523_CP_MODE_SHIFT) & LP5523_CP_MODE_MASK; | |
142 | ||
143 | ret = lp55xx_write(chip, LP5523_REG_CONFIG, val); | |
632418bf MWK |
144 | if (ret) |
145 | return ret; | |
0efba16c SO |
146 | |
147 | /* turn on all leds */ | |
ffbdccdb | 148 | ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_MSB, 0x01); |
632418bf | 149 | if (ret) |
1b21ec5a JH |
150 | return ret; |
151 | ||
22460438 MK |
152 | ret = lp55xx_write(chip, LP5523_REG_ENABLE_LEDS_LSB, 0xff); |
153 | if (ret) | |
154 | return ret; | |
155 | ||
156 | return lp5523_init_program_engine(chip); | |
0efba16c SO |
157 | } |
158 | ||
db6eaf83 | 159 | static void lp5523_load_engine(struct lp55xx_chip *chip) |
0efba16c | 160 | { |
db6eaf83 | 161 | enum lp55xx_engine_index idx = chip->engine_idx; |
4d1707c1 | 162 | static const u8 mask[] = { |
db6eaf83 MWK |
163 | [LP55XX_ENGINE_1] = LP5523_MODE_ENG1_M, |
164 | [LP55XX_ENGINE_2] = LP5523_MODE_ENG2_M, | |
165 | [LP55XX_ENGINE_3] = LP5523_MODE_ENG3_M, | |
166 | }; | |
167 | ||
4d1707c1 | 168 | static const u8 val[] = { |
db6eaf83 MWK |
169 | [LP55XX_ENGINE_1] = LP5523_LOAD_ENG1, |
170 | [LP55XX_ENGINE_2] = LP5523_LOAD_ENG2, | |
171 | [LP55XX_ENGINE_3] = LP5523_LOAD_ENG3, | |
172 | }; | |
173 | ||
b9e1730b MK |
174 | lp55xx_update_bits(chip, LP5523_REG_OP_MODE, mask[idx], val[idx]); |
175 | ||
176 | lp5523_wait_opmode_done(); | |
177 | } | |
178 | ||
179 | static void lp5523_load_engine_and_select_page(struct lp55xx_chip *chip) | |
180 | { | |
181 | enum lp55xx_engine_index idx = chip->engine_idx; | |
4d1707c1 | 182 | static const u8 page_sel[] = { |
db6eaf83 MWK |
183 | [LP55XX_ENGINE_1] = LP5523_PAGE_ENG1, |
184 | [LP55XX_ENGINE_2] = LP5523_PAGE_ENG2, | |
185 | [LP55XX_ENGINE_3] = LP5523_PAGE_ENG3, | |
186 | }; | |
187 | ||
b9e1730b | 188 | lp5523_load_engine(chip); |
db6eaf83 MWK |
189 | |
190 | lp55xx_write(chip, LP5523_REG_PROG_PAGE_SEL, page_sel[idx]); | |
0efba16c SO |
191 | } |
192 | ||
28c9266b | 193 | static void lp5523_stop_all_engines(struct lp55xx_chip *chip) |
0efba16c | 194 | { |
db6eaf83 MWK |
195 | lp55xx_write(chip, LP5523_REG_OP_MODE, 0); |
196 | lp5523_wait_opmode_done(); | |
197 | } | |
0efba16c | 198 | |
28c9266b MK |
199 | static void lp5523_stop_engine(struct lp55xx_chip *chip) |
200 | { | |
201 | enum lp55xx_engine_index idx = chip->engine_idx; | |
4d1707c1 | 202 | static const u8 mask[] = { |
28c9266b MK |
203 | [LP55XX_ENGINE_1] = LP5523_MODE_ENG1_M, |
204 | [LP55XX_ENGINE_2] = LP5523_MODE_ENG2_M, | |
205 | [LP55XX_ENGINE_3] = LP5523_MODE_ENG3_M, | |
206 | }; | |
207 | ||
208 | lp55xx_update_bits(chip, LP5523_REG_OP_MODE, mask[idx], 0); | |
209 | ||
210 | lp5523_wait_opmode_done(); | |
211 | } | |
212 | ||
db6eaf83 MWK |
213 | static void lp5523_turn_off_channels(struct lp55xx_chip *chip) |
214 | { | |
215 | int i; | |
0efba16c | 216 | |
db6eaf83 MWK |
217 | for (i = 0; i < LP5523_MAX_LEDS; i++) |
218 | lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + i, 0); | |
0efba16c SO |
219 | } |
220 | ||
db6eaf83 | 221 | static void lp5523_run_engine(struct lp55xx_chip *chip, bool start) |
0efba16c | 222 | { |
db6eaf83 MWK |
223 | int ret; |
224 | u8 mode; | |
225 | u8 exec; | |
0efba16c | 226 | |
db6eaf83 MWK |
227 | /* stop engine */ |
228 | if (!start) { | |
229 | lp5523_stop_engine(chip); | |
230 | lp5523_turn_off_channels(chip); | |
231 | return; | |
232 | } | |
0efba16c | 233 | |
db6eaf83 MWK |
234 | /* |
235 | * To run the engine, | |
236 | * operation mode and enable register should updated at the same time | |
237 | */ | |
0efba16c | 238 | |
db6eaf83 MWK |
239 | ret = lp55xx_read(chip, LP5523_REG_OP_MODE, &mode); |
240 | if (ret) | |
241 | return; | |
0efba16c | 242 | |
db6eaf83 MWK |
243 | ret = lp55xx_read(chip, LP5523_REG_ENABLE, &exec); |
244 | if (ret) | |
245 | return; | |
0efba16c | 246 | |
db6eaf83 MWK |
247 | /* change operation mode to RUN only when each engine is loading */ |
248 | if (LP5523_ENG1_IS_LOADING(mode)) { | |
249 | mode = (mode & ~LP5523_MODE_ENG1_M) | LP5523_RUN_ENG1; | |
250 | exec = (exec & ~LP5523_EXEC_ENG1_M) | LP5523_RUN_ENG1; | |
251 | } | |
0efba16c | 252 | |
db6eaf83 MWK |
253 | if (LP5523_ENG2_IS_LOADING(mode)) { |
254 | mode = (mode & ~LP5523_MODE_ENG2_M) | LP5523_RUN_ENG2; | |
255 | exec = (exec & ~LP5523_EXEC_ENG2_M) | LP5523_RUN_ENG2; | |
256 | } | |
0efba16c | 257 | |
db6eaf83 MWK |
258 | if (LP5523_ENG3_IS_LOADING(mode)) { |
259 | mode = (mode & ~LP5523_MODE_ENG3_M) | LP5523_RUN_ENG3; | |
260 | exec = (exec & ~LP5523_EXEC_ENG3_M) | LP5523_RUN_ENG3; | |
261 | } | |
262 | ||
263 | lp55xx_write(chip, LP5523_REG_OP_MODE, mode); | |
264 | lp5523_wait_opmode_done(); | |
265 | ||
266 | lp55xx_update_bits(chip, LP5523_REG_ENABLE, LP5523_EXEC_M, exec); | |
0efba16c SO |
267 | } |
268 | ||
22460438 MK |
269 | static int lp5523_init_program_engine(struct lp55xx_chip *chip) |
270 | { | |
271 | int i; | |
272 | int j; | |
273 | int ret; | |
274 | u8 status; | |
275 | /* one pattern per engine setting LED MUX start and stop addresses */ | |
276 | static const u8 pattern[][LP5523_PROGRAM_LENGTH] = { | |
277 | { 0x9c, 0x30, 0x9c, 0xb0, 0x9d, 0x80, 0xd8, 0x00, 0}, | |
278 | { 0x9c, 0x40, 0x9c, 0xc0, 0x9d, 0x80, 0xd8, 0x00, 0}, | |
279 | { 0x9c, 0x50, 0x9c, 0xd0, 0x9d, 0x80, 0xd8, 0x00, 0}, | |
280 | }; | |
281 | ||
282 | /* hardcode 32 bytes of memory for each engine from program memory */ | |
283 | ret = lp55xx_write(chip, LP5523_REG_CH1_PROG_START, 0x00); | |
284 | if (ret) | |
285 | return ret; | |
286 | ||
287 | ret = lp55xx_write(chip, LP5523_REG_CH2_PROG_START, 0x10); | |
288 | if (ret) | |
289 | return ret; | |
290 | ||
291 | ret = lp55xx_write(chip, LP5523_REG_CH3_PROG_START, 0x20); | |
292 | if (ret) | |
293 | return ret; | |
294 | ||
295 | /* write LED MUX address space for each engine */ | |
296 | for (i = LP55XX_ENGINE_1; i <= LP55XX_ENGINE_3; i++) { | |
297 | chip->engine_idx = i; | |
298 | lp5523_load_engine_and_select_page(chip); | |
299 | ||
300 | for (j = 0; j < LP5523_PROGRAM_LENGTH; j++) { | |
301 | ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + j, | |
302 | pattern[i - 1][j]); | |
303 | if (ret) | |
304 | goto out; | |
305 | } | |
306 | } | |
307 | ||
308 | lp5523_run_engine(chip, true); | |
309 | ||
310 | /* Let the programs run for couple of ms and check the engine status */ | |
311 | usleep_range(3000, 6000); | |
6647f7a0 PP |
312 | ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); |
313 | if (ret) | |
314 | goto out; | |
22460438 MK |
315 | status &= LP5523_ENG_STATUS_MASK; |
316 | ||
317 | if (status != LP5523_ENG_STATUS_MASK) { | |
318 | dev_err(&chip->cl->dev, | |
f2ea85d7 | 319 | "could not configure LED engine, status = 0x%.2x\n", |
22460438 MK |
320 | status); |
321 | ret = -1; | |
322 | } | |
323 | ||
324 | out: | |
28c9266b | 325 | lp5523_stop_all_engines(chip); |
22460438 MK |
326 | return ret; |
327 | } | |
328 | ||
db6eaf83 MWK |
329 | static int lp5523_update_program_memory(struct lp55xx_chip *chip, |
330 | const u8 *data, size_t size) | |
0efba16c | 331 | { |
db6eaf83 | 332 | u8 pattern[LP5523_PROGRAM_LENGTH] = {0}; |
7105e464 | 333 | unsigned int cmd; |
db6eaf83 | 334 | char c[3]; |
db6eaf83 | 335 | int nrchars; |
db6eaf83 | 336 | int ret; |
2f733cad MK |
337 | int offset = 0; |
338 | int i = 0; | |
0efba16c | 339 | |
db6eaf83 MWK |
340 | while ((offset < size - 1) && (i < LP5523_PROGRAM_LENGTH)) { |
341 | /* separate sscanfs because length is working only for %s */ | |
342 | ret = sscanf(data + offset, "%2s%n ", c, &nrchars); | |
343 | if (ret != 1) | |
344 | goto err; | |
0efba16c | 345 | |
db6eaf83 MWK |
346 | ret = sscanf(c, "%2x", &cmd); |
347 | if (ret != 1) | |
348 | goto err; | |
0efba16c | 349 | |
db6eaf83 MWK |
350 | pattern[i] = (u8)cmd; |
351 | offset += nrchars; | |
352 | i++; | |
353 | } | |
0efba16c | 354 | |
db6eaf83 MWK |
355 | /* Each instruction is 16bit long. Check that length is even */ |
356 | if (i % 2) | |
357 | goto err; | |
0efba16c | 358 | |
2f733cad | 359 | for (i = 0; i < LP5523_PROGRAM_LENGTH; i++) { |
45e611bf | 360 | ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + i, pattern[i]); |
e70988d1 | 361 | if (ret) |
45e611bf | 362 | return -EINVAL; |
45e611bf MK |
363 | } |
364 | ||
45e611bf | 365 | return size; |
0efba16c | 366 | |
db6eaf83 MWK |
367 | err: |
368 | dev_err(&chip->cl->dev, "wrong pattern format\n"); | |
369 | return -EINVAL; | |
0efba16c | 370 | } |
0efba16c | 371 | |
db6eaf83 | 372 | static void lp5523_firmware_loaded(struct lp55xx_chip *chip) |
0efba16c | 373 | { |
db6eaf83 | 374 | const struct firmware *fw = chip->fw; |
fbac0812 | 375 | |
db6eaf83 MWK |
376 | if (fw->size > LP5523_PROGRAM_LENGTH) { |
377 | dev_err(&chip->cl->dev, "firmware data size overflow: %zu\n", | |
378 | fw->size); | |
379 | return; | |
380 | } | |
0efba16c | 381 | |
db6eaf83 | 382 | /* |
d1b7c934 | 383 | * Program memory sequence |
db6eaf83 MWK |
384 | * 1) set engine mode to "LOAD" |
385 | * 2) write firmware data into program memory | |
386 | */ | |
0efba16c | 387 | |
b9e1730b | 388 | lp5523_load_engine_and_select_page(chip); |
db6eaf83 | 389 | lp5523_update_program_memory(chip, fw->data, fw->size); |
0efba16c | 390 | } |
0efba16c | 391 | |
45e611bf MK |
392 | static ssize_t show_engine_mode(struct device *dev, |
393 | struct device_attribute *attr, | |
394 | char *buf, int nr) | |
395 | { | |
396 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
397 | struct lp55xx_chip *chip = led->chip; | |
398 | enum lp55xx_engine_mode mode = chip->engines[nr - 1].mode; | |
399 | ||
400 | switch (mode) { | |
401 | case LP55XX_ENGINE_RUN: | |
402 | return sprintf(buf, "run\n"); | |
403 | case LP55XX_ENGINE_LOAD: | |
404 | return sprintf(buf, "load\n"); | |
405 | case LP55XX_ENGINE_DISABLED: | |
406 | default: | |
407 | return sprintf(buf, "disabled\n"); | |
408 | } | |
409 | } | |
410 | show_mode(1) | |
411 | show_mode(2) | |
412 | show_mode(3) | |
413 | ||
414 | static ssize_t store_engine_mode(struct device *dev, | |
415 | struct device_attribute *attr, | |
416 | const char *buf, size_t len, int nr) | |
417 | { | |
418 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
419 | struct lp55xx_chip *chip = led->chip; | |
420 | struct lp55xx_engine *engine = &chip->engines[nr - 1]; | |
421 | ||
422 | mutex_lock(&chip->lock); | |
423 | ||
424 | chip->engine_idx = nr; | |
425 | ||
426 | if (!strncmp(buf, "run", 3)) { | |
427 | lp5523_run_engine(chip, true); | |
428 | engine->mode = LP55XX_ENGINE_RUN; | |
429 | } else if (!strncmp(buf, "load", 4)) { | |
430 | lp5523_stop_engine(chip); | |
431 | lp5523_load_engine(chip); | |
432 | engine->mode = LP55XX_ENGINE_LOAD; | |
433 | } else if (!strncmp(buf, "disabled", 8)) { | |
434 | lp5523_stop_engine(chip); | |
435 | engine->mode = LP55XX_ENGINE_DISABLED; | |
436 | } | |
437 | ||
438 | mutex_unlock(&chip->lock); | |
439 | ||
440 | return len; | |
441 | } | |
442 | store_mode(1) | |
443 | store_mode(2) | |
444 | store_mode(3) | |
445 | ||
446 | static int lp5523_mux_parse(const char *buf, u16 *mux, size_t len) | |
447 | { | |
448 | u16 tmp_mux = 0; | |
449 | int i; | |
450 | ||
451 | len = min_t(int, len, LP5523_MAX_LEDS); | |
452 | ||
453 | for (i = 0; i < len; i++) { | |
454 | switch (buf[i]) { | |
455 | case '1': | |
456 | tmp_mux |= (1 << i); | |
457 | break; | |
458 | case '0': | |
459 | break; | |
460 | case '\n': | |
461 | i = len; | |
462 | break; | |
463 | default: | |
464 | return -1; | |
465 | } | |
466 | } | |
467 | *mux = tmp_mux; | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | static void lp5523_mux_to_array(u16 led_mux, char *array) | |
473 | { | |
474 | int i, pos = 0; | |
7105e464 | 475 | |
45e611bf MK |
476 | for (i = 0; i < LP5523_MAX_LEDS; i++) |
477 | pos += sprintf(array + pos, "%x", LED_ACTIVE(led_mux, i)); | |
478 | ||
479 | array[pos] = '\0'; | |
480 | } | |
481 | ||
482 | static ssize_t show_engine_leds(struct device *dev, | |
483 | struct device_attribute *attr, | |
484 | char *buf, int nr) | |
485 | { | |
486 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
487 | struct lp55xx_chip *chip = led->chip; | |
488 | char mux[LP5523_MAX_LEDS + 1]; | |
489 | ||
490 | lp5523_mux_to_array(chip->engines[nr - 1].led_mux, mux); | |
491 | ||
492 | return sprintf(buf, "%s\n", mux); | |
493 | } | |
494 | show_leds(1) | |
495 | show_leds(2) | |
496 | show_leds(3) | |
497 | ||
498 | static int lp5523_load_mux(struct lp55xx_chip *chip, u16 mux, int nr) | |
499 | { | |
500 | struct lp55xx_engine *engine = &chip->engines[nr - 1]; | |
501 | int ret; | |
4d1707c1 | 502 | static const u8 mux_page[] = { |
45e611bf MK |
503 | [LP55XX_ENGINE_1] = LP5523_PAGE_MUX1, |
504 | [LP55XX_ENGINE_2] = LP5523_PAGE_MUX2, | |
505 | [LP55XX_ENGINE_3] = LP5523_PAGE_MUX3, | |
506 | }; | |
507 | ||
508 | lp5523_load_engine(chip); | |
509 | ||
510 | ret = lp55xx_write(chip, LP5523_REG_PROG_PAGE_SEL, mux_page[nr]); | |
511 | if (ret) | |
512 | return ret; | |
513 | ||
7105e464 | 514 | ret = lp55xx_write(chip, LP5523_REG_PROG_MEM, (u8)(mux >> 8)); |
45e611bf MK |
515 | if (ret) |
516 | return ret; | |
517 | ||
518 | ret = lp55xx_write(chip, LP5523_REG_PROG_MEM + 1, (u8)(mux)); | |
519 | if (ret) | |
520 | return ret; | |
521 | ||
522 | engine->led_mux = mux; | |
523 | return 0; | |
524 | } | |
525 | ||
526 | static ssize_t store_engine_leds(struct device *dev, | |
527 | struct device_attribute *attr, | |
528 | const char *buf, size_t len, int nr) | |
529 | { | |
530 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
531 | struct lp55xx_chip *chip = led->chip; | |
532 | struct lp55xx_engine *engine = &chip->engines[nr - 1]; | |
533 | u16 mux = 0; | |
534 | ssize_t ret; | |
535 | ||
536 | if (lp5523_mux_parse(buf, &mux, len)) | |
537 | return -EINVAL; | |
538 | ||
539 | mutex_lock(&chip->lock); | |
540 | ||
541 | chip->engine_idx = nr; | |
542 | ret = -EINVAL; | |
543 | ||
544 | if (engine->mode != LP55XX_ENGINE_LOAD) | |
545 | goto leave; | |
546 | ||
547 | if (lp5523_load_mux(chip, mux, nr)) | |
548 | goto leave; | |
549 | ||
550 | ret = len; | |
551 | leave: | |
552 | mutex_unlock(&chip->lock); | |
553 | return ret; | |
554 | } | |
555 | store_leds(1) | |
556 | store_leds(2) | |
557 | store_leds(3) | |
558 | ||
559 | static ssize_t store_engine_load(struct device *dev, | |
560 | struct device_attribute *attr, | |
561 | const char *buf, size_t len, int nr) | |
562 | { | |
563 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
564 | struct lp55xx_chip *chip = led->chip; | |
e70988d1 | 565 | int ret; |
45e611bf MK |
566 | |
567 | mutex_lock(&chip->lock); | |
568 | ||
569 | chip->engine_idx = nr; | |
570 | lp5523_load_engine_and_select_page(chip); | |
e70988d1 | 571 | ret = lp5523_update_program_memory(chip, buf, len); |
45e611bf MK |
572 | |
573 | mutex_unlock(&chip->lock); | |
574 | ||
e70988d1 | 575 | return ret; |
45e611bf MK |
576 | } |
577 | store_load(1) | |
578 | store_load(2) | |
579 | store_load(3) | |
580 | ||
0efba16c SO |
581 | static ssize_t lp5523_selftest(struct device *dev, |
582 | struct device_attribute *attr, | |
583 | char *buf) | |
584 | { | |
9ca3bd80 MWK |
585 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); |
586 | struct lp55xx_chip *chip = led->chip; | |
587 | struct lp55xx_platform_data *pdata = chip->pdata; | |
17c13c72 MZ |
588 | int ret, pos = 0; |
589 | u8 status, adc, vdd, i; | |
0efba16c SO |
590 | |
591 | mutex_lock(&chip->lock); | |
592 | ||
9ca3bd80 | 593 | ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); |
0efba16c SO |
594 | if (ret < 0) |
595 | goto fail; | |
596 | ||
597 | /* Check that ext clock is really in use if requested */ | |
9ca3bd80 | 598 | if (pdata->clock_mode == LP55XX_CLOCK_EXT) { |
0efba16c SO |
599 | if ((status & LP5523_EXT_CLK_USED) == 0) |
600 | goto fail; | |
9ca3bd80 | 601 | } |
0efba16c SO |
602 | |
603 | /* Measure VDD (i.e. VBAT) first (channel 16 corresponds to VDD) */ | |
9ca3bd80 | 604 | lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL, LP5523_EN_LEDTEST | 16); |
2e4840ed | 605 | usleep_range(3000, 6000); /* ADC conversion time is typically 2.7 ms */ |
9ca3bd80 | 606 | ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); |
1b21ec5a JH |
607 | if (ret < 0) |
608 | goto fail; | |
609 | ||
0efba16c | 610 | if (!(status & LP5523_LEDTEST_DONE)) |
2e4840ed | 611 | usleep_range(3000, 6000); /* Was not ready. Wait little bit */ |
0efba16c | 612 | |
9ca3bd80 | 613 | ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &vdd); |
1b21ec5a JH |
614 | if (ret < 0) |
615 | goto fail; | |
616 | ||
0efba16c SO |
617 | vdd--; /* There may be some fluctuation in measurement */ |
618 | ||
17c13c72 MZ |
619 | for (i = 0; i < pdata->num_channels; i++) { |
620 | /* Skip disabled channels */ | |
9ca3bd80 | 621 | if (pdata->led_config[i].led_current == 0) |
0efba16c SO |
622 | continue; |
623 | ||
624 | /* Set default current */ | |
17c13c72 | 625 | lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr, |
9ca3bd80 | 626 | pdata->led_config[i].led_current); |
0efba16c | 627 | |
17c13c72 MZ |
628 | lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr, |
629 | 0xff); | |
2e4840ed SO |
630 | /* let current stabilize 2 - 4ms before measurements start */ |
631 | usleep_range(2000, 4000); | |
9ca3bd80 | 632 | lp55xx_write(chip, LP5523_REG_LED_TEST_CTRL, |
17c13c72 | 633 | LP5523_EN_LEDTEST | led->chan_nr); |
2e4840ed SO |
634 | /* ADC conversion time is 2.7 ms typically */ |
635 | usleep_range(3000, 6000); | |
9ca3bd80 | 636 | ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); |
1b21ec5a JH |
637 | if (ret < 0) |
638 | goto fail; | |
639 | ||
0efba16c | 640 | if (!(status & LP5523_LEDTEST_DONE)) |
17c13c72 | 641 | usleep_range(3000, 6000); /* Was not ready. Wait. */ |
9ca3bd80 MWK |
642 | |
643 | ret = lp55xx_read(chip, LP5523_REG_LED_TEST_ADC, &adc); | |
1b21ec5a JH |
644 | if (ret < 0) |
645 | goto fail; | |
0efba16c SO |
646 | |
647 | if (adc >= vdd || adc < LP5523_ADC_SHORTCIRC_LIM) | |
17c13c72 MZ |
648 | pos += sprintf(buf + pos, "LED %d FAIL\n", |
649 | led->chan_nr); | |
0efba16c | 650 | |
17c13c72 MZ |
651 | lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr, |
652 | 0x00); | |
0efba16c SO |
653 | |
654 | /* Restore current */ | |
17c13c72 MZ |
655 | lp55xx_write(chip, LP5523_REG_LED_CURRENT_BASE + led->chan_nr, |
656 | led->led_current); | |
0efba16c SO |
657 | led++; |
658 | } | |
659 | if (pos == 0) | |
660 | pos = sprintf(buf, "OK\n"); | |
661 | goto release_lock; | |
662 | fail: | |
663 | pos = sprintf(buf, "FAIL\n"); | |
664 | ||
665 | release_lock: | |
666 | mutex_unlock(&chip->lock); | |
667 | ||
668 | return pos; | |
669 | } | |
670 | ||
52da81ea TK |
671 | #define show_fader(nr) \ |
672 | static ssize_t show_master_fader##nr(struct device *dev, \ | |
673 | struct device_attribute *attr, \ | |
674 | char *buf) \ | |
675 | { \ | |
676 | return show_master_fader(dev, attr, buf, nr); \ | |
677 | } | |
678 | ||
679 | #define store_fader(nr) \ | |
680 | static ssize_t store_master_fader##nr(struct device *dev, \ | |
681 | struct device_attribute *attr, \ | |
682 | const char *buf, size_t len) \ | |
683 | { \ | |
684 | return store_master_fader(dev, attr, buf, len, nr); \ | |
685 | } | |
686 | ||
687 | static ssize_t show_master_fader(struct device *dev, | |
688 | struct device_attribute *attr, | |
689 | char *buf, int nr) | |
690 | { | |
691 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
692 | struct lp55xx_chip *chip = led->chip; | |
693 | int ret; | |
694 | u8 val; | |
695 | ||
696 | mutex_lock(&chip->lock); | |
697 | ret = lp55xx_read(chip, LP5523_REG_MASTER_FADER_BASE + nr - 1, &val); | |
698 | mutex_unlock(&chip->lock); | |
699 | ||
700 | if (ret == 0) | |
701 | ret = sprintf(buf, "%u\n", val); | |
702 | ||
703 | return ret; | |
704 | } | |
705 | show_fader(1) | |
706 | show_fader(2) | |
707 | show_fader(3) | |
708 | ||
709 | static ssize_t store_master_fader(struct device *dev, | |
710 | struct device_attribute *attr, | |
711 | const char *buf, size_t len, int nr) | |
712 | { | |
713 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
714 | struct lp55xx_chip *chip = led->chip; | |
715 | int ret; | |
716 | unsigned long val; | |
717 | ||
718 | if (kstrtoul(buf, 0, &val)) | |
719 | return -EINVAL; | |
720 | ||
721 | if (val > 0xff) | |
722 | return -EINVAL; | |
723 | ||
724 | mutex_lock(&chip->lock); | |
725 | ret = lp55xx_write(chip, LP5523_REG_MASTER_FADER_BASE + nr - 1, | |
726 | (u8)val); | |
727 | mutex_unlock(&chip->lock); | |
728 | ||
729 | if (ret == 0) | |
730 | ret = len; | |
731 | ||
732 | return ret; | |
733 | } | |
734 | store_fader(1) | |
735 | store_fader(2) | |
736 | store_fader(3) | |
737 | ||
738 | static ssize_t show_master_fader_leds(struct device *dev, | |
739 | struct device_attribute *attr, | |
740 | char *buf) | |
741 | { | |
742 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
743 | struct lp55xx_chip *chip = led->chip; | |
744 | int i, ret, pos = 0; | |
745 | u8 val; | |
746 | ||
747 | mutex_lock(&chip->lock); | |
748 | ||
749 | for (i = 0; i < LP5523_MAX_LEDS; i++) { | |
750 | ret = lp55xx_read(chip, LP5523_REG_LED_CTRL_BASE + i, &val); | |
751 | if (ret) | |
752 | goto leave; | |
753 | ||
754 | val = (val & LP5523_FADER_MAPPING_MASK) | |
755 | >> LP5523_FADER_MAPPING_SHIFT; | |
756 | if (val > 3) { | |
757 | ret = -EINVAL; | |
758 | goto leave; | |
759 | } | |
760 | buf[pos++] = val + '0'; | |
761 | } | |
762 | buf[pos++] = '\n'; | |
763 | ret = pos; | |
764 | leave: | |
765 | mutex_unlock(&chip->lock); | |
766 | return ret; | |
767 | } | |
768 | ||
769 | static ssize_t store_master_fader_leds(struct device *dev, | |
770 | struct device_attribute *attr, | |
771 | const char *buf, size_t len) | |
772 | { | |
773 | struct lp55xx_led *led = i2c_get_clientdata(to_i2c_client(dev)); | |
774 | struct lp55xx_chip *chip = led->chip; | |
775 | int i, n, ret; | |
776 | u8 val; | |
777 | ||
778 | n = min_t(int, len, LP5523_MAX_LEDS); | |
779 | ||
780 | mutex_lock(&chip->lock); | |
781 | ||
782 | for (i = 0; i < n; i++) { | |
783 | if (buf[i] >= '0' && buf[i] <= '3') { | |
784 | val = (buf[i] - '0') << LP5523_FADER_MAPPING_SHIFT; | |
785 | ret = lp55xx_update_bits(chip, | |
786 | LP5523_REG_LED_CTRL_BASE + i, | |
787 | LP5523_FADER_MAPPING_MASK, | |
788 | val); | |
789 | if (ret) | |
790 | goto leave; | |
791 | } else { | |
792 | ret = -EINVAL; | |
793 | goto leave; | |
794 | } | |
795 | } | |
796 | ret = len; | |
797 | leave: | |
798 | mutex_unlock(&chip->lock); | |
799 | return ret; | |
800 | } | |
801 | ||
40473132 DM |
802 | static int lp5523_multicolor_brightness(struct lp55xx_led *led) |
803 | { | |
804 | struct lp55xx_chip *chip = led->chip; | |
805 | int ret; | |
806 | int i; | |
807 | ||
808 | mutex_lock(&chip->lock); | |
809 | for (i = 0; i < led->mc_cdev.num_colors; i++) { | |
810 | ret = lp55xx_write(chip, | |
811 | LP5523_REG_LED_PWM_BASE + | |
812 | led->mc_cdev.subled_info[i].channel, | |
813 | led->mc_cdev.subled_info[i].brightness); | |
814 | if (ret) | |
815 | break; | |
816 | } | |
817 | mutex_unlock(&chip->lock); | |
818 | return ret; | |
819 | } | |
820 | ||
95b2af63 | 821 | static int lp5523_led_brightness(struct lp55xx_led *led) |
0efba16c | 822 | { |
a6e4679a | 823 | struct lp55xx_chip *chip = led->chip; |
95b2af63 | 824 | int ret; |
0efba16c SO |
825 | |
826 | mutex_lock(&chip->lock); | |
95b2af63 | 827 | ret = lp55xx_write(chip, LP5523_REG_LED_PWM_BASE + led->chan_nr, |
0efba16c | 828 | led->brightness); |
0efba16c | 829 | mutex_unlock(&chip->lock); |
95b2af63 | 830 | return ret; |
0efba16c SO |
831 | } |
832 | ||
45e611bf MK |
833 | static LP55XX_DEV_ATTR_RW(engine1_mode, show_engine1_mode, store_engine1_mode); |
834 | static LP55XX_DEV_ATTR_RW(engine2_mode, show_engine2_mode, store_engine2_mode); | |
835 | static LP55XX_DEV_ATTR_RW(engine3_mode, show_engine3_mode, store_engine3_mode); | |
836 | static LP55XX_DEV_ATTR_RW(engine1_leds, show_engine1_leds, store_engine1_leds); | |
837 | static LP55XX_DEV_ATTR_RW(engine2_leds, show_engine2_leds, store_engine2_leds); | |
838 | static LP55XX_DEV_ATTR_RW(engine3_leds, show_engine3_leds, store_engine3_leds); | |
839 | static LP55XX_DEV_ATTR_WO(engine1_load, store_engine1_load); | |
840 | static LP55XX_DEV_ATTR_WO(engine2_load, store_engine2_load); | |
841 | static LP55XX_DEV_ATTR_WO(engine3_load, store_engine3_load); | |
842 | static LP55XX_DEV_ATTR_RO(selftest, lp5523_selftest); | |
52da81ea TK |
843 | static LP55XX_DEV_ATTR_RW(master_fader1, show_master_fader1, |
844 | store_master_fader1); | |
845 | static LP55XX_DEV_ATTR_RW(master_fader2, show_master_fader2, | |
846 | store_master_fader2); | |
847 | static LP55XX_DEV_ATTR_RW(master_fader3, show_master_fader3, | |
848 | store_master_fader3); | |
849 | static LP55XX_DEV_ATTR_RW(master_fader_leds, show_master_fader_leds, | |
850 | store_master_fader_leds); | |
0efba16c SO |
851 | |
852 | static struct attribute *lp5523_attributes[] = { | |
45e611bf MK |
853 | &dev_attr_engine1_mode.attr, |
854 | &dev_attr_engine2_mode.attr, | |
855 | &dev_attr_engine3_mode.attr, | |
856 | &dev_attr_engine1_load.attr, | |
857 | &dev_attr_engine2_load.attr, | |
858 | &dev_attr_engine3_load.attr, | |
859 | &dev_attr_engine1_leds.attr, | |
860 | &dev_attr_engine2_leds.attr, | |
861 | &dev_attr_engine3_leds.attr, | |
0efba16c | 862 | &dev_attr_selftest.attr, |
52da81ea TK |
863 | &dev_attr_master_fader1.attr, |
864 | &dev_attr_master_fader2.attr, | |
865 | &dev_attr_master_fader3.attr, | |
866 | &dev_attr_master_fader_leds.attr, | |
f1625842 | 867 | NULL, |
0efba16c SO |
868 | }; |
869 | ||
870 | static const struct attribute_group lp5523_group = { | |
871 | .attrs = lp5523_attributes, | |
872 | }; | |
873 | ||
48068d5d MWK |
874 | /* Chip specific configurations */ |
875 | static struct lp55xx_device_config lp5523_cfg = { | |
876 | .reset = { | |
877 | .addr = LP5523_REG_RESET, | |
878 | .val = LP5523_RESET, | |
879 | }, | |
e3a700d8 MWK |
880 | .enable = { |
881 | .addr = LP5523_REG_ENABLE, | |
882 | .val = LP5523_ENABLE, | |
883 | }, | |
0e202346 | 884 | .max_channel = LP5523_MAX_LEDS, |
ffbdccdb | 885 | .post_init_device = lp5523_post_init_device, |
95b2af63 | 886 | .brightness_fn = lp5523_led_brightness, |
40473132 | 887 | .multicolor_brightness_fn = lp5523_multicolor_brightness, |
a96bfa13 | 888 | .set_led_current = lp5523_set_led_current, |
db6eaf83 MWK |
889 | .firmware_cb = lp5523_firmware_loaded, |
890 | .run_engine = lp5523_run_engine, | |
e73c0ce6 | 891 | .dev_attr_group = &lp5523_group, |
48068d5d MWK |
892 | }; |
893 | ||
69674a71 | 894 | static int lp5523_probe(struct i2c_client *client) |
0efba16c | 895 | { |
69674a71 | 896 | const struct i2c_device_id *id = i2c_client_get_device_id(client); |
22ebeb48 | 897 | int ret; |
6a0c9a47 MWK |
898 | struct lp55xx_chip *chip; |
899 | struct lp55xx_led *led; | |
ed133352 | 900 | struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev); |
8853c95e | 901 | struct device_node *np = dev_of_node(&client->dev); |
7542a04b | 902 | |
92a81562 DM |
903 | chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); |
904 | if (!chip) | |
905 | return -ENOMEM; | |
906 | ||
907 | chip->cfg = &lp5523_cfg; | |
908 | ||
ed133352 | 909 | if (!pdata) { |
7542a04b | 910 | if (np) { |
92a81562 DM |
911 | pdata = lp55xx_of_populate_pdata(&client->dev, np, |
912 | chip); | |
ed133352 MK |
913 | if (IS_ERR(pdata)) |
914 | return PTR_ERR(pdata); | |
7542a04b LW |
915 | } else { |
916 | dev_err(&client->dev, "no platform data\n"); | |
917 | return -EINVAL; | |
918 | } | |
0efba16c SO |
919 | } |
920 | ||
a86854d0 KC |
921 | led = devm_kcalloc(&client->dev, |
922 | pdata->num_channels, sizeof(*led), GFP_KERNEL); | |
6a0c9a47 MWK |
923 | if (!led) |
924 | return -ENOMEM; | |
925 | ||
926 | chip->cl = client; | |
927 | chip->pdata = pdata; | |
928 | ||
929 | mutex_init(&chip->lock); | |
0efba16c | 930 | |
6a0c9a47 | 931 | i2c_set_clientdata(client, led); |
0efba16c | 932 | |
22ebeb48 | 933 | ret = lp55xx_init_device(chip); |
0efba16c | 934 | if (ret) |
f6c64c6f | 935 | goto err_init; |
0efba16c | 936 | |
56a1e9ad | 937 | dev_info(&client->dev, "%s Programmable led chip found\n", id->name); |
0efba16c | 938 | |
9e9b3db1 | 939 | ret = lp55xx_register_leds(led, chip); |
f6524808 | 940 | if (ret) |
c732eaf0 | 941 | goto err_out; |
0efba16c | 942 | |
e73c0ce6 | 943 | ret = lp55xx_register_sysfs(chip); |
0efba16c SO |
944 | if (ret) { |
945 | dev_err(&client->dev, "registering sysfs failed\n"); | |
c732eaf0 | 946 | goto err_out; |
0efba16c | 947 | } |
e73c0ce6 MWK |
948 | |
949 | return 0; | |
950 | ||
c732eaf0 | 951 | err_out: |
6ce61762 | 952 | lp55xx_deinit_device(chip); |
f6c64c6f | 953 | err_init: |
0efba16c SO |
954 | return ret; |
955 | } | |
956 | ||
ed5c2f5f | 957 | static void lp5523_remove(struct i2c_client *client) |
0efba16c | 958 | { |
6ce61762 MWK |
959 | struct lp55xx_led *led = i2c_get_clientdata(client); |
960 | struct lp55xx_chip *chip = led->chip; | |
0efba16c | 961 | |
28c9266b | 962 | lp5523_stop_all_engines(chip); |
87cc4bde | 963 | lp55xx_unregister_sysfs(chip); |
6ce61762 | 964 | lp55xx_deinit_device(chip); |
0efba16c SO |
965 | } |
966 | ||
967 | static const struct i2c_device_id lp5523_id[] = { | |
27d7704e KM |
968 | { "lp5523", LP5523 }, |
969 | { "lp55231", LP55231 }, | |
0efba16c SO |
970 | { } |
971 | }; | |
972 | ||
973 | MODULE_DEVICE_TABLE(i2c, lp5523_id); | |
974 | ||
33c88b67 AL |
975 | static const struct of_device_id of_lp5523_leds_match[] = { |
976 | { .compatible = "national,lp5523", }, | |
9ef8c877 | 977 | { .compatible = "ti,lp55231", }, |
33c88b67 AL |
978 | {}, |
979 | }; | |
980 | ||
981 | MODULE_DEVICE_TABLE(of, of_lp5523_leds_match); | |
33c88b67 | 982 | |
0efba16c SO |
983 | static struct i2c_driver lp5523_driver = { |
984 | .driver = { | |
27d7704e | 985 | .name = "lp5523x", |
3d590af8 | 986 | .of_match_table = of_lp5523_leds_match, |
0efba16c | 987 | }, |
d9ff8a8e | 988 | .probe = lp5523_probe, |
0efba16c SO |
989 | .remove = lp5523_remove, |
990 | .id_table = lp5523_id, | |
991 | }; | |
992 | ||
09a0d183 | 993 | module_i2c_driver(lp5523_driver); |
0efba16c SO |
994 | |
995 | MODULE_AUTHOR("Mathias Nyman <mathias.nyman@nokia.com>"); | |
a2387cb9 | 996 | MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>"); |
0efba16c SO |
997 | MODULE_DESCRIPTION("LP5523 LED engine"); |
998 | MODULE_LICENSE("GPL"); |