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43d20ff3 DM |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // TI LM3692x LED chip family driver | |
c5437338 | 3 | // Copyright (C) 2017-18 Texas Instruments Incorporated - https://www.ti.com/ |
9699cb6b DM |
4 | |
5 | #include <linux/gpio/consumer.h> | |
6 | #include <linux/i2c.h> | |
7 | #include <linux/init.h> | |
8 | #include <linux/leds.h> | |
df7083b5 | 9 | #include <linux/log2.h> |
690e4f3a | 10 | #include <linux/mod_devicetable.h> |
9699cb6b DM |
11 | #include <linux/module.h> |
12 | #include <linux/mutex.h> | |
9699cb6b DM |
13 | #include <linux/regmap.h> |
14 | #include <linux/regulator/consumer.h> | |
15 | #include <linux/slab.h> | |
9699cb6b | 16 | |
07abd432 DM |
17 | #define LM36922_MODEL 0 |
18 | #define LM36923_MODEL 1 | |
19 | ||
9699cb6b DM |
20 | #define LM3692X_REV 0x0 |
21 | #define LM3692X_RESET 0x1 | |
22 | #define LM3692X_EN 0x10 | |
23 | #define LM3692X_BRT_CTRL 0x11 | |
24 | #define LM3692X_PWM_CTRL 0x12 | |
25 | #define LM3692X_BOOST_CTRL 0x13 | |
26 | #define LM3692X_AUTO_FREQ_HI 0x15 | |
27 | #define LM3692X_AUTO_FREQ_LO 0x16 | |
28 | #define LM3692X_BL_ADJ_THRESH 0x17 | |
29 | #define LM3692X_BRT_LSB 0x18 | |
30 | #define LM3692X_BRT_MSB 0x19 | |
31 | #define LM3692X_FAULT_CTRL 0x1e | |
32 | #define LM3692X_FAULT_FLAGS 0x1f | |
33 | ||
34 | #define LM3692X_SW_RESET BIT(0) | |
35 | #define LM3692X_DEVICE_EN BIT(0) | |
36 | #define LM3692X_LED1_EN BIT(1) | |
37 | #define LM3692X_LED2_EN BIT(2) | |
07abd432 DM |
38 | #define LM36923_LED3_EN BIT(3) |
39 | #define LM3692X_ENABLE_MASK (LM3692X_DEVICE_EN | LM3692X_LED1_EN | \ | |
40 | LM3692X_LED2_EN | LM36923_LED3_EN) | |
9699cb6b DM |
41 | |
42 | /* Brightness Control Bits */ | |
43 | #define LM3692X_BL_ADJ_POL BIT(0) | |
44 | #define LM3692X_RAMP_RATE_125us 0x00 | |
45 | #define LM3692X_RAMP_RATE_250us BIT(1) | |
46 | #define LM3692X_RAMP_RATE_500us BIT(2) | |
47 | #define LM3692X_RAMP_RATE_1ms (BIT(1) | BIT(2)) | |
48 | #define LM3692X_RAMP_RATE_2ms BIT(3) | |
49 | #define LM3692X_RAMP_RATE_4ms (BIT(3) | BIT(1)) | |
50 | #define LM3692X_RAMP_RATE_8ms (BIT(2) | BIT(3)) | |
51 | #define LM3692X_RAMP_RATE_16ms (BIT(1) | BIT(2) | BIT(3)) | |
52 | #define LM3692X_RAMP_EN BIT(4) | |
53 | #define LM3692X_BRHT_MODE_REG 0x00 | |
54 | #define LM3692X_BRHT_MODE_PWM BIT(5) | |
55 | #define LM3692X_BRHT_MODE_MULTI_RAMP BIT(6) | |
56 | #define LM3692X_BRHT_MODE_RAMP_MULTI (BIT(5) | BIT(6)) | |
57 | #define LM3692X_MAP_MODE_EXP BIT(7) | |
58 | ||
59 | /* PWM Register Bits */ | |
60 | #define LM3692X_PWM_FILTER_100 BIT(0) | |
61 | #define LM3692X_PWM_FILTER_150 BIT(1) | |
62 | #define LM3692X_PWM_FILTER_200 (BIT(0) | BIT(1)) | |
63 | #define LM3692X_PWM_HYSTER_1LSB BIT(2) | |
64 | #define LM3692X_PWM_HYSTER_2LSB BIT(3) | |
65 | #define LM3692X_PWM_HYSTER_3LSB (BIT(3) | BIT(2)) | |
66 | #define LM3692X_PWM_HYSTER_4LSB BIT(4) | |
67 | #define LM3692X_PWM_HYSTER_5LSB (BIT(4) | BIT(2)) | |
68 | #define LM3692X_PWM_HYSTER_6LSB (BIT(4) | BIT(3)) | |
69 | #define LM3692X_PWM_POLARITY BIT(5) | |
70 | #define LM3692X_PWM_SAMP_4MHZ BIT(6) | |
71 | #define LM3692X_PWM_SAMP_24MHZ BIT(7) | |
72 | ||
73 | /* Boost Control Bits */ | |
74 | #define LM3692X_OCP_PROT_1A BIT(0) | |
75 | #define LM3692X_OCP_PROT_1_25A BIT(1) | |
76 | #define LM3692X_OCP_PROT_1_5A (BIT(0) | BIT(1)) | |
77 | #define LM3692X_OVP_21V BIT(2) | |
78 | #define LM3692X_OVP_25V BIT(3) | |
79 | #define LM3692X_OVP_29V (BIT(2) | BIT(3)) | |
80 | #define LM3692X_MIN_IND_22UH BIT(4) | |
81 | #define LM3692X_BOOST_SW_1MHZ BIT(5) | |
82 | #define LM3692X_BOOST_SW_NO_SHIFT BIT(6) | |
83 | ||
84 | /* Fault Control Bits */ | |
85 | #define LM3692X_FAULT_CTRL_OVP BIT(0) | |
86 | #define LM3692X_FAULT_CTRL_OCP BIT(1) | |
87 | #define LM3692X_FAULT_CTRL_TSD BIT(2) | |
88 | #define LM3692X_FAULT_CTRL_OPEN BIT(3) | |
89 | ||
90 | /* Fault Flag Bits */ | |
91 | #define LM3692X_FAULT_FLAG_OVP BIT(0) | |
92 | #define LM3692X_FAULT_FLAG_OCP BIT(1) | |
93 | #define LM3692X_FAULT_FLAG_TSD BIT(2) | |
94 | #define LM3692X_FAULT_FLAG_SHRT BIT(3) | |
95 | #define LM3692X_FAULT_FLAG_OPEN BIT(4) | |
96 | ||
97 | /** | |
406a0c2c LJ |
98 | * struct lm3692x_led |
99 | * @lock: Lock for reading/writing the device | |
100 | * @client: Pointer to the I2C client | |
101 | * @led_dev: LED class device pointer | |
102 | * @regmap: Devices register map | |
103 | * @enable_gpio: VDDIO/EN gpio to enable communication interface | |
104 | * @regulator: LED supply regulator pointer | |
105 | * @led_enable: LED sync to be enabled | |
106 | * @model_id: Current device model ID enumerated | |
9699cb6b DM |
107 | */ |
108 | struct lm3692x_led { | |
109 | struct mutex lock; | |
110 | struct i2c_client *client; | |
111 | struct led_classdev led_dev; | |
112 | struct regmap *regmap; | |
113 | struct gpio_desc *enable_gpio; | |
114 | struct regulator *regulator; | |
07abd432 DM |
115 | int led_enable; |
116 | int model_id; | |
cffd61a5 | 117 | |
260718b3 GG |
118 | u8 boost_ctrl, brightness_ctrl; |
119 | bool enabled; | |
9699cb6b DM |
120 | }; |
121 | ||
122 | static const struct reg_default lm3692x_reg_defs[] = { | |
123 | {LM3692X_EN, 0xf}, | |
124 | {LM3692X_BRT_CTRL, 0x61}, | |
125 | {LM3692X_PWM_CTRL, 0x73}, | |
126 | {LM3692X_BOOST_CTRL, 0x6f}, | |
127 | {LM3692X_AUTO_FREQ_HI, 0x0}, | |
128 | {LM3692X_AUTO_FREQ_LO, 0x0}, | |
129 | {LM3692X_BL_ADJ_THRESH, 0x0}, | |
130 | {LM3692X_BRT_LSB, 0x7}, | |
131 | {LM3692X_BRT_MSB, 0xff}, | |
132 | {LM3692X_FAULT_CTRL, 0x7}, | |
133 | }; | |
134 | ||
135 | static const struct regmap_config lm3692x_regmap_config = { | |
136 | .reg_bits = 8, | |
137 | .val_bits = 8, | |
138 | ||
139 | .max_register = LM3692X_FAULT_FLAGS, | |
140 | .reg_defaults = lm3692x_reg_defs, | |
141 | .num_reg_defaults = ARRAY_SIZE(lm3692x_reg_defs), | |
142 | .cache_type = REGCACHE_RBTREE, | |
143 | }; | |
144 | ||
145 | static int lm3692x_fault_check(struct lm3692x_led *led) | |
146 | { | |
147 | int ret; | |
148 | unsigned int read_buf; | |
149 | ||
150 | ret = regmap_read(led->regmap, LM3692X_FAULT_FLAGS, &read_buf); | |
151 | if (ret) | |
152 | return ret; | |
153 | ||
154 | if (read_buf) | |
155 | dev_err(&led->client->dev, "Detected a fault 0x%X\n", read_buf); | |
156 | ||
157 | /* The first read may clear the fault. Check again to see if the fault | |
158 | * still exits and return that value. | |
159 | */ | |
160 | regmap_read(led->regmap, LM3692X_FAULT_FLAGS, &read_buf); | |
161 | if (read_buf) | |
162 | dev_err(&led->client->dev, "Second read of fault flags 0x%X\n", | |
163 | read_buf); | |
164 | ||
165 | return read_buf; | |
166 | } | |
167 | ||
5e9d7b6f | 168 | static int lm3692x_leds_enable(struct lm3692x_led *led) |
9699cb6b | 169 | { |
07abd432 | 170 | int enable_state; |
d0f9cc49 | 171 | int ret, reg_ret; |
9699cb6b | 172 | |
260718b3 GG |
173 | if (led->enabled) |
174 | return 0; | |
175 | ||
9699cb6b DM |
176 | if (led->regulator) { |
177 | ret = regulator_enable(led->regulator); | |
178 | if (ret) { | |
179 | dev_err(&led->client->dev, | |
1051da2c | 180 | "Failed to enable regulator: %d\n", ret); |
9699cb6b DM |
181 | return ret; |
182 | } | |
183 | } | |
184 | ||
185 | if (led->enable_gpio) | |
186 | gpiod_direction_output(led->enable_gpio, 1); | |
187 | ||
188 | ret = lm3692x_fault_check(led); | |
189 | if (ret) { | |
1051da2c GG |
190 | dev_err(&led->client->dev, "Cannot read/clear faults: %d\n", |
191 | ret); | |
9699cb6b DM |
192 | goto out; |
193 | } | |
194 | ||
195 | ret = regmap_write(led->regmap, LM3692X_BRT_CTRL, 0x00); | |
196 | if (ret) | |
197 | goto out; | |
198 | ||
199 | /* | |
200 | * For glitch free operation, the following data should | |
07abd432 DM |
201 | * only be written while LEDx enable bits are 0 and the device enable |
202 | * bit is set to 1. | |
9699cb6b DM |
203 | * per Section 7.5.14 of the data sheet |
204 | */ | |
07abd432 DM |
205 | ret = regmap_write(led->regmap, LM3692X_EN, LM3692X_DEVICE_EN); |
206 | if (ret) | |
207 | goto out; | |
208 | ||
209 | /* Set the brightness to 0 so when enabled the LEDs do not come | |
210 | * on with full brightness. | |
211 | */ | |
212 | ret = regmap_write(led->regmap, LM3692X_BRT_MSB, 0); | |
213 | if (ret) | |
214 | goto out; | |
215 | ||
216 | ret = regmap_write(led->regmap, LM3692X_BRT_LSB, 0); | |
217 | if (ret) | |
218 | goto out; | |
219 | ||
9699cb6b DM |
220 | ret = regmap_write(led->regmap, LM3692X_PWM_CTRL, |
221 | LM3692X_PWM_FILTER_100 | LM3692X_PWM_SAMP_24MHZ); | |
222 | if (ret) | |
223 | goto out; | |
224 | ||
cffd61a5 | 225 | ret = regmap_write(led->regmap, LM3692X_BOOST_CTRL, led->boost_ctrl); |
9699cb6b DM |
226 | if (ret) |
227 | goto out; | |
228 | ||
229 | ret = regmap_write(led->regmap, LM3692X_AUTO_FREQ_HI, 0x00); | |
230 | if (ret) | |
231 | goto out; | |
232 | ||
233 | ret = regmap_write(led->regmap, LM3692X_AUTO_FREQ_LO, 0x00); | |
234 | if (ret) | |
235 | goto out; | |
236 | ||
237 | ret = regmap_write(led->regmap, LM3692X_BL_ADJ_THRESH, 0x00); | |
238 | if (ret) | |
239 | goto out; | |
240 | ||
241 | ret = regmap_write(led->regmap, LM3692X_BRT_CTRL, | |
da61a66a | 242 | LM3692X_BL_ADJ_POL | LM3692X_RAMP_EN); |
9699cb6b DM |
243 | if (ret) |
244 | goto out; | |
245 | ||
07abd432 DM |
246 | switch (led->led_enable) { |
247 | case 0: | |
248 | default: | |
249 | if (led->model_id == LM36923_MODEL) | |
250 | enable_state = LM3692X_LED1_EN | LM3692X_LED2_EN | | |
251 | LM36923_LED3_EN; | |
252 | else | |
253 | enable_state = LM3692X_LED1_EN | LM3692X_LED2_EN; | |
254 | ||
255 | break; | |
256 | case 1: | |
257 | enable_state = LM3692X_LED1_EN; | |
258 | break; | |
259 | case 2: | |
260 | enable_state = LM3692X_LED2_EN; | |
261 | break; | |
262 | ||
263 | case 3: | |
264 | if (led->model_id == LM36923_MODEL) { | |
265 | enable_state = LM36923_LED3_EN; | |
266 | break; | |
267 | } | |
268 | ||
269 | ret = -EINVAL; | |
270 | dev_err(&led->client->dev, | |
271 | "LED3 sync not available on this device\n"); | |
272 | goto out; | |
273 | } | |
274 | ||
275 | ret = regmap_update_bits(led->regmap, LM3692X_EN, LM3692X_ENABLE_MASK, | |
276 | enable_state | LM3692X_DEVICE_EN); | |
277 | ||
260718b3 | 278 | led->enabled = true; |
9699cb6b DM |
279 | return ret; |
280 | out: | |
281 | dev_err(&led->client->dev, "Fail writing initialization values\n"); | |
282 | ||
283 | if (led->enable_gpio) | |
284 | gpiod_direction_output(led->enable_gpio, 0); | |
285 | ||
286 | if (led->regulator) { | |
d0f9cc49 GG |
287 | reg_ret = regulator_disable(led->regulator); |
288 | if (reg_ret) | |
9699cb6b | 289 | dev_err(&led->client->dev, |
d0f9cc49 | 290 | "Failed to disable regulator: %d\n", reg_ret); |
9699cb6b DM |
291 | } |
292 | ||
293 | return ret; | |
294 | } | |
d0f9cc49 | 295 | |
4a8d2bee GG |
296 | static int lm3692x_leds_disable(struct lm3692x_led *led) |
297 | { | |
298 | int ret; | |
299 | ||
260718b3 GG |
300 | if (!led->enabled) |
301 | return 0; | |
302 | ||
4a8d2bee GG |
303 | ret = regmap_update_bits(led->regmap, LM3692X_EN, LM3692X_DEVICE_EN, 0); |
304 | if (ret) { | |
305 | dev_err(&led->client->dev, "Failed to disable regulator: %d\n", | |
306 | ret); | |
307 | return ret; | |
308 | } | |
309 | ||
310 | if (led->enable_gpio) | |
311 | gpiod_direction_output(led->enable_gpio, 0); | |
312 | ||
313 | if (led->regulator) { | |
314 | ret = regulator_disable(led->regulator); | |
315 | if (ret) | |
316 | dev_err(&led->client->dev, | |
317 | "Failed to disable regulator: %d\n", ret); | |
318 | } | |
319 | ||
260718b3 | 320 | led->enabled = false; |
4a8d2bee GG |
321 | return ret; |
322 | } | |
323 | ||
5e9d7b6f GG |
324 | static int lm3692x_brightness_set(struct led_classdev *led_cdev, |
325 | enum led_brightness brt_val) | |
326 | { | |
327 | struct lm3692x_led *led = | |
328 | container_of(led_cdev, struct lm3692x_led, led_dev); | |
329 | int ret; | |
330 | int led_brightness_lsb = (brt_val >> 5); | |
331 | ||
332 | mutex_lock(&led->lock); | |
333 | ||
260718b3 GG |
334 | if (brt_val == 0) { |
335 | ret = lm3692x_leds_disable(led); | |
336 | goto out; | |
337 | } else { | |
338 | lm3692x_leds_enable(led); | |
339 | } | |
340 | ||
5e9d7b6f GG |
341 | ret = lm3692x_fault_check(led); |
342 | if (ret) { | |
343 | dev_err(&led->client->dev, "Cannot read/clear faults: %d\n", | |
344 | ret); | |
345 | goto out; | |
346 | } | |
347 | ||
348 | ret = regmap_write(led->regmap, LM3692X_BRT_MSB, brt_val); | |
349 | if (ret) { | |
350 | dev_err(&led->client->dev, "Cannot write MSB: %d\n", ret); | |
351 | goto out; | |
352 | } | |
353 | ||
354 | ret = regmap_write(led->regmap, LM3692X_BRT_LSB, led_brightness_lsb); | |
355 | if (ret) { | |
356 | dev_err(&led->client->dev, "Cannot write LSB: %d\n", ret); | |
357 | goto out; | |
358 | } | |
359 | out: | |
360 | mutex_unlock(&led->lock); | |
361 | return ret; | |
362 | } | |
363 | ||
df7083b5 GG |
364 | static enum led_brightness lm3692x_max_brightness(struct lm3692x_led *led, |
365 | u32 max_cur) | |
366 | { | |
367 | u32 max_code; | |
368 | ||
369 | /* see p.12 of LM36922 data sheet for brightness formula */ | |
370 | max_code = ((max_cur * 1000) - 37806) / 12195; | |
371 | if (max_code > 0x7FF) | |
372 | max_code = 0x7FF; | |
373 | ||
374 | return max_code >> 3; | |
375 | } | |
376 | ||
07abd432 | 377 | static int lm3692x_probe_dt(struct lm3692x_led *led) |
9699cb6b | 378 | { |
9a5c1c64 | 379 | struct fwnode_handle *child = NULL; |
a50ff283 | 380 | struct led_init_data init_data = {}; |
df7083b5 | 381 | u32 ovp, max_cur; |
9a5c1c64 | 382 | int ret; |
9699cb6b | 383 | |
07abd432 | 384 | led->enable_gpio = devm_gpiod_get_optional(&led->client->dev, |
9699cb6b DM |
385 | "enable", GPIOD_OUT_LOW); |
386 | if (IS_ERR(led->enable_gpio)) { | |
387 | ret = PTR_ERR(led->enable_gpio); | |
07abd432 DM |
388 | dev_err(&led->client->dev, "Failed to get enable gpio: %d\n", |
389 | ret); | |
9699cb6b DM |
390 | return ret; |
391 | } | |
392 | ||
396128d2 GG |
393 | led->regulator = devm_regulator_get_optional(&led->client->dev, "vled"); |
394 | if (IS_ERR(led->regulator)) { | |
395 | ret = PTR_ERR(led->regulator); | |
47eaa8ba KK |
396 | if (ret != -ENODEV) |
397 | return dev_err_probe(&led->client->dev, ret, | |
398 | "Failed to get vled regulator\n"); | |
399 | ||
9699cb6b | 400 | led->regulator = NULL; |
396128d2 | 401 | } |
9699cb6b | 402 | |
cffd61a5 GG |
403 | led->boost_ctrl = LM3692X_BOOST_SW_1MHZ | |
404 | LM3692X_BOOST_SW_NO_SHIFT | | |
405 | LM3692X_OCP_PROT_1_5A; | |
406 | ret = device_property_read_u32(&led->client->dev, | |
407 | "ti,ovp-microvolt", &ovp); | |
408 | if (ret) { | |
409 | led->boost_ctrl |= LM3692X_OVP_29V; | |
410 | } else { | |
411 | switch (ovp) { | |
412 | case 17000000: | |
413 | break; | |
414 | case 21000000: | |
415 | led->boost_ctrl |= LM3692X_OVP_21V; | |
416 | break; | |
417 | case 25000000: | |
418 | led->boost_ctrl |= LM3692X_OVP_25V; | |
419 | break; | |
420 | case 29000000: | |
421 | led->boost_ctrl |= LM3692X_OVP_29V; | |
422 | break; | |
423 | default: | |
424 | dev_err(&led->client->dev, "Invalid OVP %d\n", ovp); | |
425 | return -EINVAL; | |
426 | } | |
427 | } | |
428 | ||
9a5c1c64 DM |
429 | child = device_get_next_child_node(&led->client->dev, child); |
430 | if (!child) { | |
431 | dev_err(&led->client->dev, "No LED Child node\n"); | |
07abd432 | 432 | return -ENODEV; |
9a5c1c64 DM |
433 | } |
434 | ||
07abd432 DM |
435 | ret = fwnode_property_read_u32(child, "reg", &led->led_enable); |
436 | if (ret) { | |
f55db1c7 | 437 | fwnode_handle_put(child); |
07abd432 DM |
438 | dev_err(&led->client->dev, "reg DT property missing\n"); |
439 | return ret; | |
440 | } | |
441 | ||
df7083b5 GG |
442 | ret = fwnode_property_read_u32(child, "led-max-microamp", &max_cur); |
443 | led->led_dev.max_brightness = ret ? LED_FULL : | |
444 | lm3692x_max_brightness(led, max_cur); | |
445 | ||
a50ff283 JA |
446 | init_data.fwnode = child; |
447 | init_data.devicename = led->client->name; | |
448 | init_data.default_label = ":"; | |
9a5c1c64 | 449 | |
a50ff283 JA |
450 | ret = devm_led_classdev_register_ext(&led->client->dev, &led->led_dev, |
451 | &init_data); | |
f55db1c7 | 452 | if (ret) |
07abd432 | 453 | dev_err(&led->client->dev, "led register err: %d\n", ret); |
07abd432 | 454 | |
f55db1c7 AS |
455 | fwnode_handle_put(init_data.fwnode); |
456 | return ret; | |
07abd432 DM |
457 | } |
458 | ||
459 | static int lm3692x_probe(struct i2c_client *client, | |
460 | const struct i2c_device_id *id) | |
461 | { | |
462 | struct lm3692x_led *led; | |
463 | int ret; | |
464 | ||
465 | led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL); | |
466 | if (!led) | |
467 | return -ENOMEM; | |
468 | ||
469 | mutex_init(&led->lock); | |
470 | led->client = client; | |
471 | led->led_dev.brightness_set_blocking = lm3692x_brightness_set; | |
472 | led->model_id = id->driver_data; | |
473 | i2c_set_clientdata(client, led); | |
474 | ||
475 | led->regmap = devm_regmap_init_i2c(client, &lm3692x_regmap_config); | |
476 | if (IS_ERR(led->regmap)) { | |
477 | ret = PTR_ERR(led->regmap); | |
478 | dev_err(&client->dev, "Failed to allocate register map: %d\n", | |
479 | ret); | |
9699cb6b DM |
480 | return ret; |
481 | } | |
482 | ||
07abd432 DM |
483 | ret = lm3692x_probe_dt(led); |
484 | if (ret) | |
485 | return ret; | |
486 | ||
5e9d7b6f | 487 | ret = lm3692x_leds_enable(led); |
07abd432 DM |
488 | if (ret) |
489 | return ret; | |
490 | ||
9699cb6b DM |
491 | return 0; |
492 | } | |
493 | ||
494 | static int lm3692x_remove(struct i2c_client *client) | |
495 | { | |
496 | struct lm3692x_led *led = i2c_get_clientdata(client); | |
9699cb6b | 497 | |
cf642fae | 498 | lm3692x_leds_disable(led); |
9699cb6b DM |
499 | mutex_destroy(&led->lock); |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
504 | static const struct i2c_device_id lm3692x_id[] = { | |
07abd432 DM |
505 | { "lm36922", LM36922_MODEL }, |
506 | { "lm36923", LM36923_MODEL }, | |
9699cb6b DM |
507 | { } |
508 | }; | |
509 | MODULE_DEVICE_TABLE(i2c, lm3692x_id); | |
510 | ||
511 | static const struct of_device_id of_lm3692x_leds_match[] = { | |
512 | { .compatible = "ti,lm36922", }, | |
513 | { .compatible = "ti,lm36923", }, | |
514 | {}, | |
515 | }; | |
516 | MODULE_DEVICE_TABLE(of, of_lm3692x_leds_match); | |
517 | ||
518 | static struct i2c_driver lm3692x_driver = { | |
519 | .driver = { | |
520 | .name = "lm3692x", | |
521 | .of_match_table = of_lm3692x_leds_match, | |
522 | }, | |
523 | .probe = lm3692x_probe, | |
524 | .remove = lm3692x_remove, | |
525 | .id_table = lm3692x_id, | |
526 | }; | |
527 | module_i2c_driver(lm3692x_driver); | |
528 | ||
529 | MODULE_DESCRIPTION("Texas Instruments LM3692X LED driver"); | |
530 | MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>"); | |
531 | MODULE_LICENSE("GPL v2"); |