1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Kinetic KTD2026/7 RGB/White LED driver with I2C interface
4 *
5 * Copyright 2023 André Apitzsch <git@apitzsch.eu>
6 *
7 * Datasheet: https://www.kinet-ic.com/uploads/KTD2026-7-04h.pdf
8 */
9
10 #include <linux/i2c.h>
11 #include <linux/led-class-multicolor.h>
12 #include <linux/module.h>
13 #include <linux/mutex.h>
14 #include <linux/of.h>
15 #include <linux/of_device.h>
16 #include <linux/regmap.h>
17 #include <linux/regulator/consumer.h>
18
19 #define KTD2026_NUM_LEDS 3
20 #define KTD2027_NUM_LEDS 4
21 #define KTD202X_MAX_LEDS 4
22
23 /* Register bank */
24 #define KTD202X_REG_RESET_CONTROL 0x00
25 #define KTD202X_REG_FLASH_PERIOD 0x01
26 #define KTD202X_REG_PWM1_TIMER 0x02
27 #define KTD202X_REG_PWM2_TIMER 0x03
28 #define KTD202X_REG_CHANNEL_CTRL 0x04
29 #define KTD202X_REG_TRISE_FALL 0x05
30 #define KTD202X_REG_LED_IOUT(x) (0x06 + (x))
31
32 /* Register 0 */
33 #define KTD202X_TIMER_SLOT_CONTROL_TSLOT1 0x00
34 #define KTD202X_TIMER_SLOT_CONTROL_TSLOT2 0x01
35 #define KTD202X_TIMER_SLOT_CONTROL_TSLOT3 0x02
36 #define KTD202X_TIMER_SLOT_CONTROL_TSLOT4 0x03
37 #define KTD202X_RSTR_RESET 0x07
38
39 #define KTD202X_ENABLE_CTRL_WAKE 0x00 /* SCL High & SDA High */
40 #define KTD202X_ENABLE_CTRL_SLEEP 0x08 /* SCL High & SDA Toggling */
41
42 #define KTD202X_TRISE_FALL_SCALE_NORMAL 0x00
43 #define KTD202X_TRISE_FALL_SCALE_SLOW_X2 0x20
44 #define KTD202X_TRISE_FALL_SCALE_SLOW_X4 0x40
45 #define KTD202X_TRISE_FALL_SCALE_FAST_X8 0x60
46
47 /* Register 1 */
48 #define KTD202X_FLASH_PERIOD_256_MS_LOG_RAMP 0x00
49
50 /* Register 2-3 */
51 #define KTD202X_FLASH_ON_TIME_0_4_PERCENT 0x01
52
53 /* Register 4 */
54 #define KTD202X_CHANNEL_CTRL_MASK(x) (BIT(2 * (x)) | BIT(2 * (x) + 1))
55 #define KTD202X_CHANNEL_CTRL_OFF 0x00
56 #define KTD202X_CHANNEL_CTRL_ON(x) BIT(2 * (x))
57 #define KTD202X_CHANNEL_CTRL_PWM1(x) BIT(2 * (x) + 1)
58 #define KTD202X_CHANNEL_CTRL_PWM2(x) (BIT(2 * (x)) | BIT(2 * (x) + 1))
59
60 /* Register 5 */
61 #define KTD202X_RAMP_TIMES_2_MS 0x00
62
63 /* Register 6-9 */
64 #define KTD202X_LED_CURRENT_10_mA 0x4f
65
66 #define KTD202X_FLASH_PERIOD_MIN_MS 256
67 #define KTD202X_FLASH_PERIOD_STEP_MS 128
68 #define KTD202X_FLASH_PERIOD_MAX_STEPS 126
69 #define KTD202X_FLASH_ON_MAX 256
70
71 #define KTD202X_MAX_BRIGHTNESS 192
72
73 static const struct reg_default ktd202x_reg_defaults[] = {
74 { KTD202X_REG_RESET_CONTROL, KTD202X_TIMER_SLOT_CONTROL_TSLOT1 |
75 KTD202X_ENABLE_CTRL_WAKE | KTD202X_TRISE_FALL_SCALE_NORMAL },
76 { KTD202X_REG_FLASH_PERIOD, KTD202X_FLASH_PERIOD_256_MS_LOG_RAMP },
77 { KTD202X_REG_PWM1_TIMER, KTD202X_FLASH_ON_TIME_0_4_PERCENT },
78 { KTD202X_REG_PWM2_TIMER, KTD202X_FLASH_ON_TIME_0_4_PERCENT },
79 { KTD202X_REG_CHANNEL_CTRL, KTD202X_CHANNEL_CTRL_OFF },
80 { KTD202X_REG_TRISE_FALL, KTD202X_RAMP_TIMES_2_MS },
81 { KTD202X_REG_LED_IOUT(0), KTD202X_LED_CURRENT_10_mA },
82 { KTD202X_REG_LED_IOUT(1), KTD202X_LED_CURRENT_10_mA },
83 { KTD202X_REG_LED_IOUT(2), KTD202X_LED_CURRENT_10_mA },
84 { KTD202X_REG_LED_IOUT(3), KTD202X_LED_CURRENT_10_mA },
85 };
86
87 struct ktd202x_led {
88 struct ktd202x *chip;
89 union {
90 struct led_classdev cdev;
91 struct led_classdev_mc mcdev;
92 };
93 u32 index;
94 };
95
96 struct ktd202x {
97 struct mutex mutex;
98 struct regulator_bulk_data regulators[2];
99 struct device *dev;
100 struct regmap *regmap;
101 bool enabled;
102 unsigned long num_leds;
103 struct ktd202x_led leds[] __counted_by(num_leds);
104 };
105
ktd202x_chip_disable(struct ktd202x * chip)106 static int ktd202x_chip_disable(struct ktd202x *chip)
107 {
108 int ret;
109
110 if (!chip->enabled)
111 return 0;
112
113 regmap_write(chip->regmap, KTD202X_REG_RESET_CONTROL, KTD202X_ENABLE_CTRL_SLEEP);
114
115 ret = regulator_bulk_disable(ARRAY_SIZE(chip->regulators), chip->regulators);
116 if (ret) {
117 dev_err(chip->dev, "Failed to disable regulators: %d\n", ret);
118 return ret;
119 }
120
121 chip->enabled = false;
122 return 0;
123 }
124
ktd202x_chip_enable(struct ktd202x * chip)125 static int ktd202x_chip_enable(struct ktd202x *chip)
126 {
127 int ret;
128
129 if (chip->enabled)
130 return 0;
131
132 ret = regulator_bulk_enable(ARRAY_SIZE(chip->regulators), chip->regulators);
133 if (ret) {
134 dev_err(chip->dev, "Failed to enable regulators: %d\n", ret);
135 return ret;
136 }
137 chip->enabled = true;
138
139 ret = regmap_write(chip->regmap, KTD202X_REG_RESET_CONTROL, KTD202X_ENABLE_CTRL_WAKE);
140
141 if (ret) {
142 dev_err(chip->dev, "Failed to enable the chip: %d\n", ret);
143 ktd202x_chip_disable(chip);
144 }
145
146 return ret;
147 }
148
ktd202x_chip_in_use(struct ktd202x * chip)149 static bool ktd202x_chip_in_use(struct ktd202x *chip)
150 {
151 int i;
152
153 for (i = 0; i < chip->num_leds; i++) {
154 if (chip->leds[i].cdev.brightness)
155 return true;
156 }
157
158 return false;
159 }
160
ktd202x_brightness_set(struct ktd202x_led * led,struct mc_subled * subleds,unsigned int num_channels)161 static int ktd202x_brightness_set(struct ktd202x_led *led,
162 struct mc_subled *subleds,
163 unsigned int num_channels)
164 {
165 bool mode_blink = false;
166 int channel;
167 int state;
168 int ret;
169 int i;
170
171 if (ktd202x_chip_in_use(led->chip)) {
172 ret = ktd202x_chip_enable(led->chip);
173 if (ret)
174 return ret;
175 }
176
177 ret = regmap_read(led->chip->regmap, KTD202X_REG_CHANNEL_CTRL, &state);
178 if (ret)
179 return ret;
180
181 /*
182 * In multicolor case, assume blink mode if PWM is set for at least one
183 * channel because another channel cannot be in state ON at the same time
184 */
185 for (i = 0; i < num_channels; i++) {
186 int channel_state;
187
188 channel = subleds[i].channel;
189 channel_state = (state >> 2 * channel) & KTD202X_CHANNEL_CTRL_MASK(0);
190 if (channel_state == KTD202X_CHANNEL_CTRL_OFF)
191 continue;
192 mode_blink = channel_state == KTD202X_CHANNEL_CTRL_PWM1(0);
193 break;
194 }
195
196 for (i = 0; i < num_channels; i++) {
197 enum led_brightness brightness;
198 int mode;
199
200 brightness = subleds[i].brightness;
201 channel = subleds[i].channel;
202
203 if (brightness) {
204 /* Register expects brightness between 0 and MAX_BRIGHTNESS - 1 */
205 ret = regmap_write(led->chip->regmap, KTD202X_REG_LED_IOUT(channel),
206 brightness - 1);
207 if (ret)
208 return ret;
209
210 if (mode_blink)
211 mode = KTD202X_CHANNEL_CTRL_PWM1(channel);
212 else
213 mode = KTD202X_CHANNEL_CTRL_ON(channel);
214 } else {
215 mode = KTD202X_CHANNEL_CTRL_OFF;
216 }
217 ret = regmap_update_bits(led->chip->regmap, KTD202X_REG_CHANNEL_CTRL,
218 KTD202X_CHANNEL_CTRL_MASK(channel), mode);
219 if (ret)
220 return ret;
221 }
222
223 if (!ktd202x_chip_in_use(led->chip))
224 return ktd202x_chip_disable(led->chip);
225
226 return 0;
227 }
228
ktd202x_brightness_single_set(struct led_classdev * cdev,enum led_brightness value)229 static int ktd202x_brightness_single_set(struct led_classdev *cdev,
230 enum led_brightness value)
231 {
232 struct ktd202x_led *led = container_of(cdev, struct ktd202x_led, cdev);
233 struct mc_subled info;
234 int ret;
235
236 cdev->brightness = value;
237
238 mutex_lock(&led->chip->mutex);
239
240 info.brightness = value;
241 info.channel = led->index;
242 ret = ktd202x_brightness_set(led, &info, 1);
243
244 mutex_unlock(&led->chip->mutex);
245
246 return ret;
247 }
248
ktd202x_brightness_mc_set(struct led_classdev * cdev,enum led_brightness value)249 static int ktd202x_brightness_mc_set(struct led_classdev *cdev,
250 enum led_brightness value)
251 {
252 struct led_classdev_mc *mc = lcdev_to_mccdev(cdev);
253 struct ktd202x_led *led = container_of(mc, struct ktd202x_led, mcdev);
254 int ret;
255
256 cdev->brightness = value;
257
258 mutex_lock(&led->chip->mutex);
259
260 led_mc_calc_color_components(mc, value);
261 ret = ktd202x_brightness_set(led, mc->subled_info, mc->num_colors);
262
263 mutex_unlock(&led->chip->mutex);
264
265 return ret;
266 }
267
ktd202x_blink_set(struct ktd202x_led * led,unsigned long * delay_on,unsigned long * delay_off,struct mc_subled * subleds,unsigned int num_channels)268 static int ktd202x_blink_set(struct ktd202x_led *led, unsigned long *delay_on,
269 unsigned long *delay_off, struct mc_subled *subleds,
270 unsigned int num_channels)
271 {
272 unsigned long delay_total_ms;
273 int ret, num_steps, on;
274 u8 ctrl_mask = 0;
275 u8 ctrl_pwm1 = 0;
276 u8 ctrl_on = 0;
277 int i;
278
279 mutex_lock(&led->chip->mutex);
280
281 for (i = 0; i < num_channels; i++) {
282 int channel = subleds[i].channel;
283
284 ctrl_mask |= KTD202X_CHANNEL_CTRL_MASK(channel);
285 ctrl_on |= KTD202X_CHANNEL_CTRL_ON(channel);
286 ctrl_pwm1 |= KTD202X_CHANNEL_CTRL_PWM1(channel);
287 }
288
289 /* Never off - brightness is already set, disable blinking */
290 if (!*delay_off) {
291 ret = regmap_update_bits(led->chip->regmap, KTD202X_REG_CHANNEL_CTRL,
292 ctrl_mask, ctrl_on);
293 goto out;
294 }
295
296 /* Convert into values the HW will understand. */
297
298 /* Integer representation of time of flash period */
299 num_steps = (*delay_on + *delay_off - KTD202X_FLASH_PERIOD_MIN_MS) /
300 KTD202X_FLASH_PERIOD_STEP_MS;
301 num_steps = clamp(num_steps, 0, KTD202X_FLASH_PERIOD_MAX_STEPS);
302
303 /* Integer representation of percentage of LED ON time */
304 on = (*delay_on * KTD202X_FLASH_ON_MAX) / (*delay_on + *delay_off);
305
306 /* Actually used delay_{on,off} values */
307 delay_total_ms = num_steps * KTD202X_FLASH_PERIOD_STEP_MS + KTD202X_FLASH_PERIOD_MIN_MS;
308 *delay_on = (delay_total_ms * on) / KTD202X_FLASH_ON_MAX;
309 *delay_off = delay_total_ms - *delay_on;
310
311 /* Set timings */
312 ret = regmap_write(led->chip->regmap, KTD202X_REG_FLASH_PERIOD, num_steps);
313 if (ret)
314 goto out;
315
316 ret = regmap_write(led->chip->regmap, KTD202X_REG_PWM1_TIMER, on);
317 if (ret)
318 goto out;
319
320 ret = regmap_update_bits(led->chip->regmap, KTD202X_REG_CHANNEL_CTRL,
321 ctrl_mask, ctrl_pwm1);
322 out:
323 mutex_unlock(&led->chip->mutex);
324 return ret;
325 }
326
ktd202x_blink_single_set(struct led_classdev * cdev,unsigned long * delay_on,unsigned long * delay_off)327 static int ktd202x_blink_single_set(struct led_classdev *cdev,
328 unsigned long *delay_on,
329 unsigned long *delay_off)
330 {
331 struct ktd202x_led *led = container_of(cdev, struct ktd202x_led, cdev);
332 struct mc_subled info;
333 int ret;
334
335 if (!cdev->brightness) {
336 ret = ktd202x_brightness_single_set(cdev, KTD202X_MAX_BRIGHTNESS);
337 if (ret)
338 return ret;
339 }
340
341 /* If no blink specified, default to 1 Hz. */
342 if (!*delay_off && !*delay_on) {
343 *delay_off = 500;
344 *delay_on = 500;
345 }
346
347 /* Never on - just set to off */
348 if (!*delay_on)
349 return ktd202x_brightness_single_set(cdev, LED_OFF);
350
351 info.channel = led->index;
352
353 return ktd202x_blink_set(led, delay_on, delay_off, &info, 1);
354 }
355
ktd202x_blink_mc_set(struct led_classdev * cdev,unsigned long * delay_on,unsigned long * delay_off)356 static int ktd202x_blink_mc_set(struct led_classdev *cdev,
357 unsigned long *delay_on,
358 unsigned long *delay_off)
359 {
360 struct led_classdev_mc *mc = lcdev_to_mccdev(cdev);
361 struct ktd202x_led *led = container_of(mc, struct ktd202x_led, mcdev);
362 int ret;
363
364 if (!cdev->brightness) {
365 ret = ktd202x_brightness_mc_set(cdev, KTD202X_MAX_BRIGHTNESS);
366 if (ret)
367 return ret;
368 }
369
370 /* If no blink specified, default to 1 Hz. */
371 if (!*delay_off && !*delay_on) {
372 *delay_off = 500;
373 *delay_on = 500;
374 }
375
376 /* Never on - just set to off */
377 if (!*delay_on)
378 return ktd202x_brightness_mc_set(cdev, LED_OFF);
379
380 return ktd202x_blink_set(led, delay_on, delay_off, mc->subled_info,
381 mc->num_colors);
382 }
383
ktd202x_setup_led_rgb(struct ktd202x * chip,struct fwnode_handle * fwnode,struct ktd202x_led * led,struct led_init_data * init_data)384 static int ktd202x_setup_led_rgb(struct ktd202x *chip, struct fwnode_handle *fwnode,
385 struct ktd202x_led *led, struct led_init_data *init_data)
386 {
387 struct fwnode_handle *child;
388 struct led_classdev *cdev;
389 struct mc_subled *info;
390 int num_channels;
391 int i = 0;
392
393 num_channels = 0;
394 fwnode_for_each_available_child_node(fwnode, child)
395 num_channels++;
396
397 if (!num_channels || num_channels > chip->num_leds)
398 return -EINVAL;
399
400 info = devm_kcalloc(chip->dev, num_channels, sizeof(*info), GFP_KERNEL);
401 if (!info)
402 return -ENOMEM;
403
404 fwnode_for_each_available_child_node(fwnode, child) {
405 u32 mono_color;
406 u32 reg;
407 int ret;
408
409 ret = fwnode_property_read_u32(child, "reg", ®);
410 if (ret != 0 || reg >= chip->num_leds) {
411 dev_err(chip->dev, "invalid 'reg' of %pfw\n", child);
412 fwnode_handle_put(child);
413 return ret;
414 }
415
416 ret = fwnode_property_read_u32(child, "color", &mono_color);
417 if (ret < 0 && ret != -EINVAL) {
418 dev_err(chip->dev, "failed to parse 'color' of %pfw\n", child);
419 fwnode_handle_put(child);
420 return ret;
421 }
422
423 info[i].color_index = mono_color;
424 info[i].channel = reg;
425 info[i].intensity = KTD202X_MAX_BRIGHTNESS;
426 i++;
427 }
428
429 led->mcdev.subled_info = info;
430 led->mcdev.num_colors = num_channels;
431
432 cdev = &led->mcdev.led_cdev;
433 cdev->brightness_set_blocking = ktd202x_brightness_mc_set;
434 cdev->blink_set = ktd202x_blink_mc_set;
435
436 return devm_led_classdev_multicolor_register_ext(chip->dev, &led->mcdev, init_data);
437 }
438
ktd202x_setup_led_single(struct ktd202x * chip,struct fwnode_handle * fwnode,struct ktd202x_led * led,struct led_init_data * init_data)439 static int ktd202x_setup_led_single(struct ktd202x *chip, struct fwnode_handle *fwnode,
440 struct ktd202x_led *led, struct led_init_data *init_data)
441 {
442 struct led_classdev *cdev;
443 u32 reg;
444 int ret;
445
446 ret = fwnode_property_read_u32(fwnode, "reg", ®);
447 if (ret != 0 || reg >= chip->num_leds) {
448 dev_err(chip->dev, "invalid 'reg' of %pfw\n", fwnode);
449 return -EINVAL;
450 }
451 led->index = reg;
452
453 cdev = &led->cdev;
454 cdev->brightness_set_blocking = ktd202x_brightness_single_set;
455 cdev->blink_set = ktd202x_blink_single_set;
456
457 return devm_led_classdev_register_ext(chip->dev, &led->cdev, init_data);
458 }
459
ktd202x_add_led(struct ktd202x * chip,struct fwnode_handle * fwnode,unsigned int index)460 static int ktd202x_add_led(struct ktd202x *chip, struct fwnode_handle *fwnode, unsigned int index)
461 {
462 struct ktd202x_led *led = &chip->leds[index];
463 struct led_init_data init_data = {};
464 struct led_classdev *cdev;
465 u32 color;
466 int ret;
467
468 /* Color property is optional in single color case */
469 ret = fwnode_property_read_u32(fwnode, "color", &color);
470 if (ret < 0 && ret != -EINVAL) {
471 dev_err(chip->dev, "failed to parse 'color' of %pfw\n", fwnode);
472 return ret;
473 }
474
475 led->chip = chip;
476 init_data.fwnode = fwnode;
477
478 if (color == LED_COLOR_ID_RGB) {
479 cdev = &led->mcdev.led_cdev;
480 ret = ktd202x_setup_led_rgb(chip, fwnode, led, &init_data);
481 } else {
482 cdev = &led->cdev;
483 ret = ktd202x_setup_led_single(chip, fwnode, led, &init_data);
484 }
485
486 if (ret) {
487 dev_err(chip->dev, "unable to register %s\n", cdev->name);
488 return ret;
489 }
490
491 cdev->max_brightness = KTD202X_MAX_BRIGHTNESS;
492
493 return 0;
494 }
495
ktd202x_probe_fw(struct ktd202x * chip)496 static int ktd202x_probe_fw(struct ktd202x *chip)
497 {
498 struct device *dev = chip->dev;
499 int count;
500 int i = 0;
501
502 count = device_get_child_node_count(dev);
503 if (!count || count > chip->num_leds)
504 return -EINVAL;
505
506 regmap_write(chip->regmap, KTD202X_REG_RESET_CONTROL, KTD202X_RSTR_RESET);
507
508 /* Allow the device to execute the complete reset */
509 usleep_range(200, 300);
510
511 device_for_each_child_node_scoped(dev, child) {
512 int ret = ktd202x_add_led(chip, child, i);
513
514 if (ret)
515 return ret;
516
517 i++;
518 }
519
520 return 0;
521 }
522
523 static const struct regmap_config ktd202x_regmap_config = {
524 .reg_bits = 8,
525 .val_bits = 8,
526 .max_register = 0x09,
527 .cache_type = REGCACHE_FLAT,
528 .reg_defaults = ktd202x_reg_defaults,
529 .num_reg_defaults = ARRAY_SIZE(ktd202x_reg_defaults),
530 };
531
ktd202x_probe(struct i2c_client * client)532 static int ktd202x_probe(struct i2c_client *client)
533 {
534 struct device *dev = &client->dev;
535 struct ktd202x *chip;
536 int count;
537 int ret;
538
539 count = device_get_child_node_count(dev);
540 if (!count || count > KTD202X_MAX_LEDS)
541 return dev_err_probe(dev, -EINVAL, "Incorrect number of leds (%d)", count);
542
543 chip = devm_kzalloc(dev, struct_size(chip, leds, count), GFP_KERNEL);
544 if (!chip)
545 return -ENOMEM;
546
547 chip->dev = dev;
548 i2c_set_clientdata(client, chip);
549
550 chip->regmap = devm_regmap_init_i2c(client, &ktd202x_regmap_config);
551 if (IS_ERR(chip->regmap)) {
552 ret = dev_err_probe(dev, PTR_ERR(chip->regmap),
553 "Failed to allocate register map.\n");
554 return ret;
555 }
556
557 ret = devm_mutex_init(dev, &chip->mutex);
558 if (ret)
559 return ret;
560
561 chip->num_leds = (unsigned long)i2c_get_match_data(client);
562
563 chip->regulators[0].supply = "vin";
564 chip->regulators[1].supply = "vio";
565 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(chip->regulators), chip->regulators);
566 if (ret < 0) {
567 dev_err_probe(dev, ret, "Failed to request regulators.\n");
568 return ret;
569 }
570
571 ret = regulator_bulk_enable(ARRAY_SIZE(chip->regulators), chip->regulators);
572 if (ret) {
573 dev_err_probe(dev, ret, "Failed to enable regulators.\n");
574 return ret;
575 }
576
577 ret = ktd202x_probe_fw(chip);
578 if (ret < 0) {
579 regulator_bulk_disable(ARRAY_SIZE(chip->regulators), chip->regulators);
580 return ret;
581 }
582
583 ret = regulator_bulk_disable(ARRAY_SIZE(chip->regulators), chip->regulators);
584 if (ret) {
585 dev_err_probe(dev, ret, "Failed to disable regulators.\n");
586 return ret;
587 }
588
589 return 0;
590 }
591
ktd202x_remove(struct i2c_client * client)592 static void ktd202x_remove(struct i2c_client *client)
593 {
594 struct ktd202x *chip = i2c_get_clientdata(client);
595
596 ktd202x_chip_disable(chip);
597 }
598
ktd202x_shutdown(struct i2c_client * client)599 static void ktd202x_shutdown(struct i2c_client *client)
600 {
601 struct ktd202x *chip = i2c_get_clientdata(client);
602
603 /* Reset registers to make sure all LEDs are off before shutdown */
604 regmap_write(chip->regmap, KTD202X_REG_RESET_CONTROL, KTD202X_RSTR_RESET);
605 }
606
607 static const struct i2c_device_id ktd202x_id[] = {
608 {"ktd2026", KTD2026_NUM_LEDS},
609 {"ktd2027", KTD2027_NUM_LEDS},
610 {}
611 };
612 MODULE_DEVICE_TABLE(i2c, ktd202x_id);
613
614 static const struct of_device_id ktd202x_match_table[] = {
615 { .compatible = "kinetic,ktd2026", .data = (void *)KTD2026_NUM_LEDS },
616 { .compatible = "kinetic,ktd2027", .data = (void *)KTD2027_NUM_LEDS },
617 {}
618 };
619 MODULE_DEVICE_TABLE(of, ktd202x_match_table);
620
621 static struct i2c_driver ktd202x_driver = {
622 .driver = {
623 .name = "leds-ktd202x",
624 .of_match_table = ktd202x_match_table,
625 },
626 .probe = ktd202x_probe,
627 .remove = ktd202x_remove,
628 .shutdown = ktd202x_shutdown,
629 .id_table = ktd202x_id,
630 };
631 module_i2c_driver(ktd202x_driver);
632
633 MODULE_AUTHOR("André Apitzsch <git@apitzsch.eu>");
634 MODULE_DESCRIPTION("Kinetic KTD2026/7 LED driver");
635 MODULE_LICENSE("GPL");
636