1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2015-16 Golden Delicious Computers
4 *
5 * Author: Nikolaus Schaller <hns@goldelico.com>
6 *
7 * LED driver for the IS31FL319{0,1,3,6,9} to drive 1, 3, 6 or 9 light
8 * effect LEDs.
9 */
10
11 #include <linux/err.h>
12 #include <linux/i2c.h>
13 #include <linux/leds.h>
14 #include <linux/mod_devicetable.h>
15 #include <linux/module.h>
16 #include <linux/property.h>
17 #include <linux/regmap.h>
18 #include <linux/slab.h>
19 #include <linux/delay.h>
20 #include <linux/gpio/consumer.h>
21
22 /* register numbers */
23 #define IS31FL319X_SHUTDOWN 0x00
24
25 /* registers for 3190, 3191 and 3193 */
26 #define IS31FL3190_BREATHING 0x01
27 #define IS31FL3190_LEDMODE 0x02
28 #define IS31FL3190_CURRENT 0x03
29 #define IS31FL3190_PWM(channel) (0x04 + channel)
30 #define IS31FL3190_DATA_UPDATE 0x07
31 #define IS31FL3190_T0(channel) (0x0a + channel)
32 #define IS31FL3190_T1T2(channel) (0x10 + channel)
33 #define IS31FL3190_T3T4(channel) (0x16 + channel)
34 #define IS31FL3190_TIME_UPDATE 0x1c
35 #define IS31FL3190_LEDCONTROL 0x1d
36 #define IS31FL3190_RESET 0x2f
37
38 #define IS31FL3190_CURRENT_uA_MIN 5000
39 #define IS31FL3190_CURRENT_uA_DEFAULT 42000
40 #define IS31FL3190_CURRENT_uA_MAX 42000
41 #define IS31FL3190_CURRENT_SHIFT 2
42 #define IS31FL3190_CURRENT_MASK GENMASK(4, 2)
43 #define IS31FL3190_CURRENT_5_mA 0x02
44 #define IS31FL3190_CURRENT_10_mA 0x01
45 #define IS31FL3190_CURRENT_17dot5_mA 0x04
46 #define IS31FL3190_CURRENT_30_mA 0x03
47 #define IS31FL3190_CURRENT_42_mA 0x00
48
49 /* registers for 3196 and 3199 */
50 #define IS31FL3196_CTRL1 0x01
51 #define IS31FL3196_CTRL2 0x02
52 #define IS31FL3196_CONFIG1 0x03
53 #define IS31FL3196_CONFIG2 0x04
54 #define IS31FL3196_RAMP_MODE 0x05
55 #define IS31FL3196_BREATH_MARK 0x06
56 #define IS31FL3196_PWM(channel) (0x07 + channel)
57 #define IS31FL3196_DATA_UPDATE 0x10
58 #define IS31FL3196_T0(channel) (0x11 + channel)
59 #define IS31FL3196_T123_1 0x1a
60 #define IS31FL3196_T123_2 0x1b
61 #define IS31FL3196_T123_3 0x1c
62 #define IS31FL3196_T4(channel) (0x1d + channel)
63 #define IS31FL3196_TIME_UPDATE 0x26
64 #define IS31FL3196_RESET 0xff
65
66 #define IS31FL3196_REG_CNT (IS31FL3196_RESET + 1)
67
68 #define IS31FL319X_MAX_LEDS 9
69
70 /* CS (Current Setting) in CONFIG2 register */
71 #define IS31FL3196_CONFIG2_CS_SHIFT 4
72 #define IS31FL3196_CONFIG2_CS_MASK GENMASK(2, 0)
73 #define IS31FL3196_CONFIG2_CS_STEP_REF 12
74
75 #define IS31FL3196_CURRENT_uA_MIN 5000
76 #define IS31FL3196_CURRENT_uA_MAX 40000
77 #define IS31FL3196_CURRENT_uA_STEP 5000
78 #define IS31FL3196_CURRENT_uA_DEFAULT 20000
79
80 /* Audio gain in CONFIG2 register */
81 #define IS31FL3196_AUDIO_GAIN_DB_MAX ((u32)21)
82 #define IS31FL3196_AUDIO_GAIN_DB_STEP 3
83
84 /*
85 * regmap is used as a cache of chip's register space,
86 * to avoid reading back brightness values from chip,
87 * which is known to hang.
88 */
89 struct is31fl319x_chip {
90 const struct is31fl319x_chipdef *cdef;
91 struct i2c_client *client;
92 struct gpio_desc *shutdown_gpio;
93 struct regmap *regmap;
94 struct mutex lock;
95 u32 audio_gain_db;
96
97 struct is31fl319x_led {
98 struct is31fl319x_chip *chip;
99 struct led_classdev cdev;
100 u32 max_microamp;
101 bool configured;
102 } leds[IS31FL319X_MAX_LEDS];
103 };
104
105 struct is31fl319x_chipdef {
106 int num_leds;
107 u8 reset_reg;
108 const struct regmap_config *is31fl319x_regmap_config;
109 int (*brightness_set)(struct led_classdev *cdev, enum led_brightness brightness);
110 u32 current_default;
111 u32 current_min;
112 u32 current_max;
113 bool is_3196or3199;
114 };
115
is31fl319x_readable_reg(struct device * dev,unsigned int reg)116 static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
117 {
118 /* we have no readable registers */
119 return false;
120 }
121
is31fl3190_volatile_reg(struct device * dev,unsigned int reg)122 static bool is31fl3190_volatile_reg(struct device *dev, unsigned int reg)
123 {
124 /* volatile registers are not cached */
125 switch (reg) {
126 case IS31FL3190_DATA_UPDATE:
127 case IS31FL3190_TIME_UPDATE:
128 case IS31FL3190_RESET:
129 return true; /* always write-through */
130 default:
131 return false;
132 }
133 }
134
135 static const struct reg_default is31fl3190_reg_defaults[] = {
136 { IS31FL3190_LEDMODE, 0x00 },
137 { IS31FL3190_CURRENT, 0x00 },
138 { IS31FL3190_PWM(0), 0x00 },
139 { IS31FL3190_PWM(1), 0x00 },
140 { IS31FL3190_PWM(2), 0x00 },
141 };
142
143 static const struct regmap_config is31fl3190_regmap_config = {
144 .reg_bits = 8,
145 .val_bits = 8,
146 .max_register = IS31FL3190_RESET,
147 .cache_type = REGCACHE_FLAT,
148 .readable_reg = is31fl319x_readable_reg,
149 .volatile_reg = is31fl3190_volatile_reg,
150 .reg_defaults = is31fl3190_reg_defaults,
151 .num_reg_defaults = ARRAY_SIZE(is31fl3190_reg_defaults),
152 };
153
is31fl3196_volatile_reg(struct device * dev,unsigned int reg)154 static bool is31fl3196_volatile_reg(struct device *dev, unsigned int reg)
155 {
156 /* volatile registers are not cached */
157 switch (reg) {
158 case IS31FL3196_DATA_UPDATE:
159 case IS31FL3196_TIME_UPDATE:
160 case IS31FL3196_RESET:
161 return true; /* always write-through */
162 default:
163 return false;
164 }
165 }
166
167 static const struct reg_default is31fl3196_reg_defaults[] = {
168 { IS31FL3196_CONFIG1, 0x00 },
169 { IS31FL3196_CONFIG2, 0x00 },
170 { IS31FL3196_PWM(0), 0x00 },
171 { IS31FL3196_PWM(1), 0x00 },
172 { IS31FL3196_PWM(2), 0x00 },
173 { IS31FL3196_PWM(3), 0x00 },
174 { IS31FL3196_PWM(4), 0x00 },
175 { IS31FL3196_PWM(5), 0x00 },
176 { IS31FL3196_PWM(6), 0x00 },
177 { IS31FL3196_PWM(7), 0x00 },
178 { IS31FL3196_PWM(8), 0x00 },
179 };
180
181 static const struct regmap_config is31fl3196_regmap_config = {
182 .reg_bits = 8,
183 .val_bits = 8,
184 .max_register = IS31FL3196_REG_CNT,
185 .cache_type = REGCACHE_FLAT,
186 .readable_reg = is31fl319x_readable_reg,
187 .volatile_reg = is31fl3196_volatile_reg,
188 .reg_defaults = is31fl3196_reg_defaults,
189 .num_reg_defaults = ARRAY_SIZE(is31fl3196_reg_defaults),
190 };
191
is31fl3190_brightness_set(struct led_classdev * cdev,enum led_brightness brightness)192 static int is31fl3190_brightness_set(struct led_classdev *cdev,
193 enum led_brightness brightness)
194 {
195 struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led, cdev);
196 struct is31fl319x_chip *is31 = led->chip;
197 int chan = led - is31->leds;
198 int ret;
199 int i;
200 u8 ctrl = 0;
201
202 dev_dbg(&is31->client->dev, "channel %d: %d\n", chan, brightness);
203
204 mutex_lock(&is31->lock);
205
206 /* update PWM register */
207 ret = regmap_write(is31->regmap, IS31FL3190_PWM(chan), brightness);
208 if (ret < 0)
209 goto out;
210
211 /* read current brightness of all PWM channels */
212 for (i = 0; i < is31->cdef->num_leds; i++) {
213 unsigned int pwm_value;
214 bool on;
215
216 /*
217 * since neither cdev nor the chip can provide
218 * the current setting, we read from the regmap cache
219 */
220
221 ret = regmap_read(is31->regmap, IS31FL3190_PWM(i), &pwm_value);
222 on = ret >= 0 && pwm_value > LED_OFF;
223
224 ctrl |= on << i;
225 }
226
227 if (ctrl > 0) {
228 dev_dbg(&is31->client->dev, "power up %02x\n", ctrl);
229 regmap_write(is31->regmap, IS31FL3190_LEDCONTROL, ctrl);
230 /* update PWMs */
231 regmap_write(is31->regmap, IS31FL3190_DATA_UPDATE, 0x00);
232 /* enable chip from shut down and enable all channels */
233 ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x20);
234 } else {
235 dev_dbg(&is31->client->dev, "power down\n");
236 /* shut down (no need to clear LEDCONTROL) */
237 ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
238 }
239
240 out:
241 mutex_unlock(&is31->lock);
242
243 return ret;
244 }
245
is31fl3196_brightness_set(struct led_classdev * cdev,enum led_brightness brightness)246 static int is31fl3196_brightness_set(struct led_classdev *cdev,
247 enum led_brightness brightness)
248 {
249 struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led, cdev);
250 struct is31fl319x_chip *is31 = led->chip;
251 int chan = led - is31->leds;
252 int ret;
253 int i;
254 u8 ctrl1 = 0, ctrl2 = 0;
255
256 dev_dbg(&is31->client->dev, "channel %d: %d\n", chan, brightness);
257
258 mutex_lock(&is31->lock);
259
260 /* update PWM register */
261 ret = regmap_write(is31->regmap, IS31FL3196_PWM(chan), brightness);
262 if (ret < 0)
263 goto out;
264
265 /* read current brightness of all PWM channels */
266 for (i = 0; i < is31->cdef->num_leds; i++) {
267 unsigned int pwm_value;
268 bool on;
269
270 /*
271 * since neither cdev nor the chip can provide
272 * the current setting, we read from the regmap cache
273 */
274
275 ret = regmap_read(is31->regmap, IS31FL3196_PWM(i), &pwm_value);
276 on = ret >= 0 && pwm_value > LED_OFF;
277
278 if (i < 3)
279 ctrl1 |= on << i; /* 0..2 => bit 0..2 */
280 else if (i < 6)
281 ctrl1 |= on << (i + 1); /* 3..5 => bit 4..6 */
282 else
283 ctrl2 |= on << (i - 6); /* 6..8 => bit 0..2 */
284 }
285
286 if (ctrl1 > 0 || ctrl2 > 0) {
287 dev_dbg(&is31->client->dev, "power up %02x %02x\n",
288 ctrl1, ctrl2);
289 regmap_write(is31->regmap, IS31FL3196_CTRL1, ctrl1);
290 regmap_write(is31->regmap, IS31FL3196_CTRL2, ctrl2);
291 /* update PWMs */
292 regmap_write(is31->regmap, IS31FL3196_DATA_UPDATE, 0x00);
293 /* enable chip from shut down */
294 ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
295 } else {
296 dev_dbg(&is31->client->dev, "power down\n");
297 /* shut down (no need to clear CTRL1/2) */
298 ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x00);
299 }
300
301 out:
302 mutex_unlock(&is31->lock);
303
304 return ret;
305 }
306
307 static const struct is31fl319x_chipdef is31fl3190_cdef = {
308 .num_leds = 1,
309 .reset_reg = IS31FL3190_RESET,
310 .is31fl319x_regmap_config = &is31fl3190_regmap_config,
311 .brightness_set = is31fl3190_brightness_set,
312 .current_default = IS31FL3190_CURRENT_uA_DEFAULT,
313 .current_min = IS31FL3190_CURRENT_uA_MIN,
314 .current_max = IS31FL3190_CURRENT_uA_MAX,
315 .is_3196or3199 = false,
316 };
317
318 static const struct is31fl319x_chipdef is31fl3193_cdef = {
319 .num_leds = 3,
320 .reset_reg = IS31FL3190_RESET,
321 .is31fl319x_regmap_config = &is31fl3190_regmap_config,
322 .brightness_set = is31fl3190_brightness_set,
323 .current_default = IS31FL3190_CURRENT_uA_DEFAULT,
324 .current_min = IS31FL3190_CURRENT_uA_MIN,
325 .current_max = IS31FL3190_CURRENT_uA_MAX,
326 .is_3196or3199 = false,
327 };
328
329 static const struct is31fl319x_chipdef is31fl3196_cdef = {
330 .num_leds = 6,
331 .reset_reg = IS31FL3196_RESET,
332 .is31fl319x_regmap_config = &is31fl3196_regmap_config,
333 .brightness_set = is31fl3196_brightness_set,
334 .current_default = IS31FL3196_CURRENT_uA_DEFAULT,
335 .current_min = IS31FL3196_CURRENT_uA_MIN,
336 .current_max = IS31FL3196_CURRENT_uA_MAX,
337 .is_3196or3199 = true,
338 };
339
340 static const struct is31fl319x_chipdef is31fl3199_cdef = {
341 .num_leds = 9,
342 .reset_reg = IS31FL3196_RESET,
343 .is31fl319x_regmap_config = &is31fl3196_regmap_config,
344 .brightness_set = is31fl3196_brightness_set,
345 .current_default = IS31FL3196_CURRENT_uA_DEFAULT,
346 .current_min = IS31FL3196_CURRENT_uA_MIN,
347 .current_max = IS31FL3196_CURRENT_uA_MAX,
348 .is_3196or3199 = true,
349 };
350
351 static const struct of_device_id of_is31fl319x_match[] = {
352 { .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
353 { .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
354 { .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
355 { .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
356 { .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
357 { .compatible = "si-en,sn3190", .data = &is31fl3190_cdef, },
358 { .compatible = "si-en,sn3191", .data = &is31fl3190_cdef, },
359 { .compatible = "si-en,sn3193", .data = &is31fl3193_cdef, },
360 { .compatible = "si-en,sn3196", .data = &is31fl3196_cdef, },
361 { .compatible = "si-en,sn3199", .data = &is31fl3199_cdef, },
362 { }
363 };
364 MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
365
is31fl319x_parse_child_fw(const struct device * dev,const struct fwnode_handle * child,struct is31fl319x_led * led,struct is31fl319x_chip * is31)366 static int is31fl319x_parse_child_fw(const struct device *dev,
367 const struct fwnode_handle *child,
368 struct is31fl319x_led *led,
369 struct is31fl319x_chip *is31)
370 {
371 struct led_classdev *cdev = &led->cdev;
372 int ret;
373
374 if (fwnode_property_read_string(child, "label", &cdev->name))
375 cdev->name = fwnode_get_name(child);
376
377 ret = fwnode_property_read_string(child, "linux,default-trigger", &cdev->default_trigger);
378 if (ret < 0 && ret != -EINVAL) /* is optional */
379 return ret;
380
381 led->max_microamp = is31->cdef->current_default;
382 ret = fwnode_property_read_u32(child, "led-max-microamp", &led->max_microamp);
383 if (!ret) {
384 if (led->max_microamp < is31->cdef->current_min)
385 return -EINVAL; /* not supported */
386 led->max_microamp = min(led->max_microamp,
387 is31->cdef->current_max);
388 }
389
390 return 0;
391 }
392
is31fl319x_parse_fw(struct device * dev,struct is31fl319x_chip * is31)393 static int is31fl319x_parse_fw(struct device *dev, struct is31fl319x_chip *is31)
394 {
395 struct fwnode_handle *fwnode = dev_fwnode(dev);
396 int count;
397 int ret;
398
399 is31->shutdown_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
400 if (IS_ERR(is31->shutdown_gpio))
401 return dev_err_probe(dev, PTR_ERR(is31->shutdown_gpio),
402 "Failed to get shutdown gpio\n");
403
404 is31->cdef = device_get_match_data(dev);
405
406 count = 0;
407 device_for_each_child_node_scoped(dev, child)
408 count++;
409
410 dev_dbg(dev, "probing with %d leds defined in DT\n", count);
411
412 if (!count || count > is31->cdef->num_leds)
413 return dev_err_probe(dev, -ENODEV,
414 "Number of leds defined must be between 1 and %u\n",
415 is31->cdef->num_leds);
416
417 device_for_each_child_node_scoped(dev, child) {
418 struct is31fl319x_led *led;
419 u32 reg;
420
421 ret = fwnode_property_read_u32(child, "reg", ®);
422 if (ret)
423 return dev_err_probe(dev, ret, "Failed to read led 'reg' property\n");
424
425 if (reg < 1 || reg > is31->cdef->num_leds)
426 return dev_err_probe(dev, -EINVAL, "invalid led reg %u\n", reg);
427
428 led = &is31->leds[reg - 1];
429
430 if (led->configured)
431 return dev_err_probe(dev, -EINVAL, "led %u is already configured\n", reg);
432
433 ret = is31fl319x_parse_child_fw(dev, child, led, is31);
434 if (ret)
435 return dev_err_probe(dev, ret, "led %u DT parsing failed\n", reg);
436
437 led->configured = true;
438 }
439
440 is31->audio_gain_db = 0;
441 if (is31->cdef->is_3196or3199) {
442 ret = fwnode_property_read_u32(fwnode, "audio-gain-db", &is31->audio_gain_db);
443 if (!ret)
444 is31->audio_gain_db = min(is31->audio_gain_db,
445 IS31FL3196_AUDIO_GAIN_DB_MAX);
446 }
447
448 return 0;
449 }
450
is31fl3190_microamp_to_cs(struct device * dev,u32 microamp)451 static inline int is31fl3190_microamp_to_cs(struct device *dev, u32 microamp)
452 {
453 switch (microamp) {
454 case 5000:
455 return IS31FL3190_CURRENT_5_mA;
456 case 10000:
457 return IS31FL3190_CURRENT_10_mA;
458 case 17500:
459 return IS31FL3190_CURRENT_17dot5_mA;
460 case 30000:
461 return IS31FL3190_CURRENT_30_mA;
462 case 42000:
463 return IS31FL3190_CURRENT_42_mA;
464 default:
465 dev_warn(dev, "Unsupported current value: %d, using 5000 µA!\n", microamp);
466 return IS31FL3190_CURRENT_5_mA;
467 }
468 }
469
is31fl3196_microamp_to_cs(struct device * dev,u32 microamp)470 static inline int is31fl3196_microamp_to_cs(struct device *dev, u32 microamp)
471 {
472 /* round down to nearest supported value (range check done by caller) */
473 u32 step = microamp / IS31FL3196_CURRENT_uA_STEP;
474
475 return ((IS31FL3196_CONFIG2_CS_STEP_REF - step) &
476 IS31FL3196_CONFIG2_CS_MASK) <<
477 IS31FL3196_CONFIG2_CS_SHIFT; /* CS encoding */
478 }
479
is31fl3196_db_to_gain(u32 dezibel)480 static inline int is31fl3196_db_to_gain(u32 dezibel)
481 {
482 /* round down to nearest supported value (range check done by caller) */
483 return dezibel / IS31FL3196_AUDIO_GAIN_DB_STEP;
484 }
485
is31f1319x_mutex_destroy(void * lock)486 static void is31f1319x_mutex_destroy(void *lock)
487 {
488 mutex_destroy(lock);
489 }
490
is31fl319x_probe(struct i2c_client * client)491 static int is31fl319x_probe(struct i2c_client *client)
492 {
493 struct is31fl319x_chip *is31;
494 struct device *dev = &client->dev;
495 int err;
496 int i = 0;
497 u32 aggregated_led_microamp;
498
499 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
500 return -EIO;
501
502 is31 = devm_kzalloc(&client->dev, sizeof(*is31), GFP_KERNEL);
503 if (!is31)
504 return -ENOMEM;
505
506 mutex_init(&is31->lock);
507 err = devm_add_action_or_reset(dev, is31f1319x_mutex_destroy, &is31->lock);
508 if (err)
509 return err;
510
511 err = is31fl319x_parse_fw(&client->dev, is31);
512 if (err)
513 return err;
514
515 if (is31->shutdown_gpio) {
516 gpiod_direction_output(is31->shutdown_gpio, 0);
517 mdelay(5);
518 gpiod_direction_output(is31->shutdown_gpio, 1);
519 }
520
521 is31->client = client;
522 is31->regmap = devm_regmap_init_i2c(client, is31->cdef->is31fl319x_regmap_config);
523 if (IS_ERR(is31->regmap))
524 return dev_err_probe(dev, PTR_ERR(is31->regmap), "failed to allocate register map\n");
525
526 i2c_set_clientdata(client, is31);
527
528 /* check for write-reply from chip (we can't read any registers) */
529 err = regmap_write(is31->regmap, is31->cdef->reset_reg, 0x00);
530 if (err < 0)
531 return dev_err_probe(dev, err, "no response from chip write\n");
532
533 /*
534 * Kernel conventions require per-LED led-max-microamp property.
535 * But the chip does not allow to limit individual LEDs.
536 * So we take minimum from all subnodes for safety of hardware.
537 */
538 aggregated_led_microamp = is31->cdef->current_max;
539 for (i = 0; i < is31->cdef->num_leds; i++)
540 if (is31->leds[i].configured &&
541 is31->leds[i].max_microamp < aggregated_led_microamp)
542 aggregated_led_microamp = is31->leds[i].max_microamp;
543
544 if (is31->cdef->is_3196or3199)
545 regmap_write(is31->regmap, IS31FL3196_CONFIG2,
546 is31fl3196_microamp_to_cs(dev, aggregated_led_microamp) |
547 is31fl3196_db_to_gain(is31->audio_gain_db));
548 else
549 regmap_update_bits(is31->regmap, IS31FL3190_CURRENT, IS31FL3190_CURRENT_MASK,
550 is31fl3190_microamp_to_cs(dev, aggregated_led_microamp) << IS31FL3190_CURRENT_SHIFT);
551
552 for (i = 0; i < is31->cdef->num_leds; i++) {
553 struct is31fl319x_led *led = &is31->leds[i];
554
555 if (!led->configured)
556 continue;
557
558 led->chip = is31;
559 led->cdev.brightness_set_blocking = is31->cdef->brightness_set;
560
561 err = devm_led_classdev_register(&client->dev, &led->cdev);
562 if (err < 0)
563 return err;
564 }
565
566 return 0;
567 }
568
569 /*
570 * i2c-core (and modalias) requires that id_table be properly filled,
571 * even though it is not used for DeviceTree based instantiation.
572 */
573 static const struct i2c_device_id is31fl319x_id[] = {
574 { "is31fl3190" },
575 { "is31fl3191" },
576 { "is31fl3193" },
577 { "is31fl3196" },
578 { "is31fl3199" },
579 { "sn3190" },
580 { "sn3191" },
581 { "sn3193" },
582 { "sn3196" },
583 { "sn3199" },
584 {},
585 };
586 MODULE_DEVICE_TABLE(i2c, is31fl319x_id);
587
588 static struct i2c_driver is31fl319x_driver = {
589 .driver = {
590 .name = "leds-is31fl319x",
591 .of_match_table = of_is31fl319x_match,
592 },
593 .probe = is31fl319x_probe,
594 .id_table = is31fl319x_id,
595 };
596
597 module_i2c_driver(is31fl319x_driver);
598
599 MODULE_AUTHOR("H. Nikolaus Schaller <hns@goldelico.com>");
600 MODULE_AUTHOR("Andrey Utkin <andrey_utkin@fastmail.com>");
601 MODULE_DESCRIPTION("IS31FL319X LED driver");
602 MODULE_LICENSE("GPL v2");
603