1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * VCNL4035 Ambient Light and Proximity Sensor - 7-bit I2C slave address 0x60 4 * 5 * Copyright (c) 2018, DENX Software Engineering GmbH 6 * Author: Parthiban Nallathambi <pn@denx.de> 7 * 8 * TODO: Proximity 9 */ 10 #include <linux/bitops.h> 11 #include <linux/i2c.h> 12 #include <linux/module.h> 13 #include <linux/pm_runtime.h> 14 #include <linux/regmap.h> 15 16 #include <linux/iio/buffer.h> 17 #include <linux/iio/events.h> 18 #include <linux/iio/iio.h> 19 #include <linux/iio/sysfs.h> 20 #include <linux/iio/trigger.h> 21 #include <linux/iio/trigger_consumer.h> 22 #include <linux/iio/triggered_buffer.h> 23 24 #define VCNL4035_DRV_NAME "vcnl4035" 25 #define VCNL4035_IRQ_NAME "vcnl4035_event" 26 #define VCNL4035_REGMAP_NAME "vcnl4035_regmap" 27 28 /* Device registers */ 29 #define VCNL4035_ALS_CONF 0x00 30 #define VCNL4035_ALS_THDH 0x01 31 #define VCNL4035_ALS_THDL 0x02 32 #define VCNL4035_ALS_DATA 0x0B 33 #define VCNL4035_WHITE_DATA 0x0C 34 #define VCNL4035_INT_FLAG 0x0D 35 #define VCNL4035_DEV_ID 0x0E 36 37 /* Register masks */ 38 #define VCNL4035_MODE_ALS_MASK BIT(0) 39 #define VCNL4035_MODE_ALS_WHITE_CHAN BIT(8) 40 #define VCNL4035_MODE_ALS_INT_MASK BIT(1) 41 #define VCNL4035_ALS_IT_MASK GENMASK(7, 5) 42 #define VCNL4035_ALS_PERS_MASK GENMASK(3, 2) 43 #define VCNL4035_INT_ALS_IF_H_MASK BIT(12) 44 #define VCNL4035_INT_ALS_IF_L_MASK BIT(13) 45 46 /* Default values */ 47 #define VCNL4035_MODE_ALS_ENABLE BIT(0) 48 #define VCNL4035_MODE_ALS_DISABLE 0x00 49 #define VCNL4035_MODE_ALS_INT_ENABLE BIT(1) 50 #define VCNL4035_MODE_ALS_INT_DISABLE 0 51 #define VCNL4035_DEV_ID_VAL 0x80 52 #define VCNL4035_ALS_IT_DEFAULT 0x01 53 #define VCNL4035_ALS_PERS_DEFAULT 0x00 54 #define VCNL4035_ALS_THDH_DEFAULT 5000 55 #define VCNL4035_ALS_THDL_DEFAULT 100 56 #define VCNL4035_SLEEP_DELAY_MS 2000 57 58 struct vcnl4035_data { 59 struct i2c_client *client; 60 struct regmap *regmap; 61 unsigned int als_it_val; 62 unsigned int als_persistence; 63 unsigned int als_thresh_low; 64 unsigned int als_thresh_high; 65 struct iio_trigger *drdy_trigger0; 66 }; 67 68 static inline bool vcnl4035_is_triggered(struct vcnl4035_data *data) 69 { 70 int ret; 71 int reg; 72 73 ret = regmap_read(data->regmap, VCNL4035_INT_FLAG, ®); 74 if (ret < 0) 75 return false; 76 77 return !!(reg & 78 (VCNL4035_INT_ALS_IF_H_MASK | VCNL4035_INT_ALS_IF_L_MASK)); 79 } 80 81 static irqreturn_t vcnl4035_drdy_irq_thread(int irq, void *private) 82 { 83 struct iio_dev *indio_dev = private; 84 struct vcnl4035_data *data = iio_priv(indio_dev); 85 86 if (vcnl4035_is_triggered(data)) { 87 iio_push_event(indio_dev, IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 88 0, 89 IIO_EV_TYPE_THRESH, 90 IIO_EV_DIR_EITHER), 91 iio_get_time_ns(indio_dev)); 92 iio_trigger_poll_chained(data->drdy_trigger0); 93 return IRQ_HANDLED; 94 } 95 96 return IRQ_NONE; 97 } 98 99 /* Triggered buffer */ 100 static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p) 101 { 102 struct iio_poll_func *pf = p; 103 struct iio_dev *indio_dev = pf->indio_dev; 104 struct vcnl4035_data *data = iio_priv(indio_dev); 105 /* Ensure naturally aligned timestamp */ 106 u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)] __aligned(8); 107 int ret; 108 109 ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, (int *)buffer); 110 if (ret < 0) { 111 dev_err(&data->client->dev, 112 "Trigger consumer can't read from sensor.\n"); 113 goto fail_read; 114 } 115 iio_push_to_buffers_with_timestamp(indio_dev, buffer, 116 iio_get_time_ns(indio_dev)); 117 118 fail_read: 119 iio_trigger_notify_done(indio_dev->trig); 120 121 return IRQ_HANDLED; 122 } 123 124 static int vcnl4035_als_drdy_set_state(struct iio_trigger *trigger, 125 bool enable_drdy) 126 { 127 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trigger); 128 struct vcnl4035_data *data = iio_priv(indio_dev); 129 int val = enable_drdy ? VCNL4035_MODE_ALS_INT_ENABLE : 130 VCNL4035_MODE_ALS_INT_DISABLE; 131 132 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 133 VCNL4035_MODE_ALS_INT_MASK, 134 val); 135 } 136 137 static const struct iio_trigger_ops vcnl4035_trigger_ops = { 138 .validate_device = iio_trigger_validate_own_device, 139 .set_trigger_state = vcnl4035_als_drdy_set_state, 140 }; 141 142 static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on) 143 { 144 int ret; 145 struct device *dev = &data->client->dev; 146 147 if (on) { 148 ret = pm_runtime_resume_and_get(dev); 149 } else { 150 pm_runtime_mark_last_busy(dev); 151 ret = pm_runtime_put_autosuspend(dev); 152 } 153 154 return ret; 155 } 156 157 /* 158 * Device IT INT Time (ms) Scale (lux/step) 159 * 000 50 0.064 160 * 001 100 0.032 161 * 010 200 0.016 162 * 100 400 0.008 163 * 101 - 111 800 0.004 164 * Values are proportional, so ALS INT is selected for input due to 165 * simplicity reason. Integration time value and scaling is 166 * calculated based on device INT value 167 * 168 * Raw value needs to be scaled using ALS steps 169 */ 170 static int vcnl4035_read_raw(struct iio_dev *indio_dev, 171 struct iio_chan_spec const *chan, int *val, 172 int *val2, long mask) 173 { 174 struct vcnl4035_data *data = iio_priv(indio_dev); 175 int ret; 176 int raw_data; 177 unsigned int reg; 178 179 switch (mask) { 180 case IIO_CHAN_INFO_RAW: 181 ret = vcnl4035_set_pm_runtime_state(data, true); 182 if (ret < 0) 183 return ret; 184 185 ret = iio_device_claim_direct_mode(indio_dev); 186 if (!ret) { 187 if (chan->channel) 188 reg = VCNL4035_ALS_DATA; 189 else 190 reg = VCNL4035_WHITE_DATA; 191 ret = regmap_read(data->regmap, reg, &raw_data); 192 iio_device_release_direct_mode(indio_dev); 193 if (!ret) { 194 *val = raw_data; 195 ret = IIO_VAL_INT; 196 } 197 } 198 vcnl4035_set_pm_runtime_state(data, false); 199 return ret; 200 case IIO_CHAN_INFO_INT_TIME: 201 *val = 50; 202 if (data->als_it_val) 203 *val = data->als_it_val * 100; 204 return IIO_VAL_INT; 205 case IIO_CHAN_INFO_SCALE: 206 *val = 64; 207 if (!data->als_it_val) 208 *val2 = 1000; 209 else 210 *val2 = data->als_it_val * 2 * 1000; 211 return IIO_VAL_FRACTIONAL; 212 default: 213 return -EINVAL; 214 } 215 } 216 217 static int vcnl4035_write_raw(struct iio_dev *indio_dev, 218 struct iio_chan_spec const *chan, 219 int val, int val2, long mask) 220 { 221 int ret; 222 struct vcnl4035_data *data = iio_priv(indio_dev); 223 224 switch (mask) { 225 case IIO_CHAN_INFO_INT_TIME: 226 if (val <= 0 || val > 800) 227 return -EINVAL; 228 229 ret = vcnl4035_set_pm_runtime_state(data, true); 230 if (ret < 0) 231 return ret; 232 233 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 234 VCNL4035_ALS_IT_MASK, 235 val / 100); 236 if (!ret) 237 data->als_it_val = val / 100; 238 239 vcnl4035_set_pm_runtime_state(data, false); 240 return ret; 241 default: 242 return -EINVAL; 243 } 244 } 245 246 /* No direct ABI for persistence and threshold, so eventing */ 247 static int vcnl4035_read_thresh(struct iio_dev *indio_dev, 248 const struct iio_chan_spec *chan, enum iio_event_type type, 249 enum iio_event_direction dir, enum iio_event_info info, 250 int *val, int *val2) 251 { 252 struct vcnl4035_data *data = iio_priv(indio_dev); 253 254 switch (info) { 255 case IIO_EV_INFO_VALUE: 256 switch (dir) { 257 case IIO_EV_DIR_RISING: 258 *val = data->als_thresh_high; 259 return IIO_VAL_INT; 260 case IIO_EV_DIR_FALLING: 261 *val = data->als_thresh_low; 262 return IIO_VAL_INT; 263 default: 264 return -EINVAL; 265 } 266 break; 267 case IIO_EV_INFO_PERIOD: 268 *val = data->als_persistence; 269 return IIO_VAL_INT; 270 default: 271 return -EINVAL; 272 } 273 274 } 275 276 static int vcnl4035_write_thresh(struct iio_dev *indio_dev, 277 const struct iio_chan_spec *chan, enum iio_event_type type, 278 enum iio_event_direction dir, enum iio_event_info info, int val, 279 int val2) 280 { 281 struct vcnl4035_data *data = iio_priv(indio_dev); 282 int ret; 283 284 switch (info) { 285 case IIO_EV_INFO_VALUE: 286 /* 16 bit threshold range 0 - 65535 */ 287 if (val < 0 || val > 65535) 288 return -EINVAL; 289 if (dir == IIO_EV_DIR_RISING) { 290 if (val < data->als_thresh_low) 291 return -EINVAL; 292 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, 293 val); 294 if (ret) 295 return ret; 296 data->als_thresh_high = val; 297 } else { 298 if (val > data->als_thresh_high) 299 return -EINVAL; 300 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, 301 val); 302 if (ret) 303 return ret; 304 data->als_thresh_low = val; 305 } 306 return ret; 307 case IIO_EV_INFO_PERIOD: 308 /* allow only 1 2 4 8 as persistence value */ 309 if (val < 0 || val > 8 || hweight8(val) != 1) 310 return -EINVAL; 311 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 312 VCNL4035_ALS_PERS_MASK, val); 313 if (!ret) 314 data->als_persistence = val; 315 return ret; 316 default: 317 return -EINVAL; 318 } 319 } 320 321 static IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800"); 322 323 static struct attribute *vcnl4035_attributes[] = { 324 &iio_const_attr_integration_time_available.dev_attr.attr, 325 NULL, 326 }; 327 328 static const struct attribute_group vcnl4035_attribute_group = { 329 .attrs = vcnl4035_attributes, 330 }; 331 332 static const struct iio_info vcnl4035_info = { 333 .read_raw = vcnl4035_read_raw, 334 .write_raw = vcnl4035_write_raw, 335 .read_event_value = vcnl4035_read_thresh, 336 .write_event_value = vcnl4035_write_thresh, 337 .attrs = &vcnl4035_attribute_group, 338 }; 339 340 static const struct iio_event_spec vcnl4035_event_spec[] = { 341 { 342 .type = IIO_EV_TYPE_THRESH, 343 .dir = IIO_EV_DIR_RISING, 344 .mask_separate = BIT(IIO_EV_INFO_VALUE), 345 }, { 346 .type = IIO_EV_TYPE_THRESH, 347 .dir = IIO_EV_DIR_FALLING, 348 .mask_separate = BIT(IIO_EV_INFO_VALUE), 349 }, { 350 .type = IIO_EV_TYPE_THRESH, 351 .dir = IIO_EV_DIR_EITHER, 352 .mask_separate = BIT(IIO_EV_INFO_PERIOD), 353 }, 354 }; 355 356 enum vcnl4035_scan_index_order { 357 VCNL4035_CHAN_INDEX_LIGHT, 358 VCNL4035_CHAN_INDEX_WHITE_LED, 359 }; 360 361 static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = { 362 .validate_scan_mask = &iio_validate_scan_mask_onehot, 363 }; 364 365 static const struct iio_chan_spec vcnl4035_channels[] = { 366 { 367 .type = IIO_LIGHT, 368 .channel = 0, 369 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | 370 BIT(IIO_CHAN_INFO_INT_TIME) | 371 BIT(IIO_CHAN_INFO_SCALE), 372 .event_spec = vcnl4035_event_spec, 373 .num_event_specs = ARRAY_SIZE(vcnl4035_event_spec), 374 .scan_index = VCNL4035_CHAN_INDEX_LIGHT, 375 .scan_type = { 376 .sign = 'u', 377 .realbits = 16, 378 .storagebits = 16, 379 .endianness = IIO_LE, 380 }, 381 }, 382 { 383 .type = IIO_INTENSITY, 384 .channel = 1, 385 .modified = 1, 386 .channel2 = IIO_MOD_LIGHT_BOTH, 387 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 388 .scan_index = VCNL4035_CHAN_INDEX_WHITE_LED, 389 .scan_type = { 390 .sign = 'u', 391 .realbits = 16, 392 .storagebits = 16, 393 .endianness = IIO_LE, 394 }, 395 }, 396 }; 397 398 static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status) 399 { 400 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 401 VCNL4035_MODE_ALS_MASK, 402 status); 403 } 404 405 static int vcnl4035_init(struct vcnl4035_data *data) 406 { 407 int ret; 408 int id; 409 410 ret = regmap_read(data->regmap, VCNL4035_DEV_ID, &id); 411 if (ret < 0) { 412 dev_err(&data->client->dev, "Failed to read DEV_ID register\n"); 413 return ret; 414 } 415 416 if (id != VCNL4035_DEV_ID_VAL) { 417 dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n", 418 id, VCNL4035_DEV_ID_VAL); 419 return -ENODEV; 420 } 421 422 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); 423 if (ret < 0) 424 return ret; 425 426 /* ALS white channel enable */ 427 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 428 VCNL4035_MODE_ALS_WHITE_CHAN, 429 1); 430 if (ret) { 431 dev_err(&data->client->dev, "set white channel enable %d\n", 432 ret); 433 return ret; 434 } 435 436 /* set default integration time - 100 ms for ALS */ 437 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 438 VCNL4035_ALS_IT_MASK, 439 VCNL4035_ALS_IT_DEFAULT); 440 if (ret) { 441 dev_err(&data->client->dev, "set default ALS IT returned %d\n", 442 ret); 443 return ret; 444 } 445 data->als_it_val = VCNL4035_ALS_IT_DEFAULT; 446 447 /* set default persistence time - 1 for ALS */ 448 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 449 VCNL4035_ALS_PERS_MASK, 450 VCNL4035_ALS_PERS_DEFAULT); 451 if (ret) { 452 dev_err(&data->client->dev, "set default PERS returned %d\n", 453 ret); 454 return ret; 455 } 456 data->als_persistence = VCNL4035_ALS_PERS_DEFAULT; 457 458 /* set default HIGH threshold for ALS */ 459 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, 460 VCNL4035_ALS_THDH_DEFAULT); 461 if (ret) { 462 dev_err(&data->client->dev, "set default THDH returned %d\n", 463 ret); 464 return ret; 465 } 466 data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT; 467 468 /* set default LOW threshold for ALS */ 469 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, 470 VCNL4035_ALS_THDL_DEFAULT); 471 if (ret) { 472 dev_err(&data->client->dev, "set default THDL returned %d\n", 473 ret); 474 return ret; 475 } 476 data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT; 477 478 return 0; 479 } 480 481 static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg) 482 { 483 switch (reg) { 484 case VCNL4035_ALS_CONF: 485 case VCNL4035_DEV_ID: 486 return false; 487 default: 488 return true; 489 } 490 } 491 492 static const struct regmap_config vcnl4035_regmap_config = { 493 .name = VCNL4035_REGMAP_NAME, 494 .reg_bits = 8, 495 .val_bits = 16, 496 .max_register = VCNL4035_DEV_ID, 497 .cache_type = REGCACHE_RBTREE, 498 .volatile_reg = vcnl4035_is_volatile_reg, 499 .val_format_endian = REGMAP_ENDIAN_LITTLE, 500 }; 501 502 static int vcnl4035_probe_trigger(struct iio_dev *indio_dev) 503 { 504 int ret; 505 struct vcnl4035_data *data = iio_priv(indio_dev); 506 507 data->drdy_trigger0 = devm_iio_trigger_alloc( 508 indio_dev->dev.parent, 509 "%s-dev%d", indio_dev->name, iio_device_id(indio_dev)); 510 if (!data->drdy_trigger0) 511 return -ENOMEM; 512 513 data->drdy_trigger0->ops = &vcnl4035_trigger_ops; 514 iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev); 515 ret = devm_iio_trigger_register(indio_dev->dev.parent, 516 data->drdy_trigger0); 517 if (ret) { 518 dev_err(&data->client->dev, "iio trigger register failed\n"); 519 return ret; 520 } 521 522 /* Trigger setup */ 523 ret = devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, 524 NULL, vcnl4035_trigger_consumer_handler, 525 &iio_triggered_buffer_setup_ops); 526 if (ret < 0) { 527 dev_err(&data->client->dev, "iio triggered buffer setup failed\n"); 528 return ret; 529 } 530 531 /* IRQ to trigger mapping */ 532 ret = devm_request_threaded_irq(&data->client->dev, data->client->irq, 533 NULL, vcnl4035_drdy_irq_thread, 534 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 535 VCNL4035_IRQ_NAME, indio_dev); 536 if (ret < 0) 537 dev_err(&data->client->dev, "request irq %d for trigger0 failed\n", 538 data->client->irq); 539 return ret; 540 } 541 542 static int vcnl4035_probe(struct i2c_client *client, 543 const struct i2c_device_id *id) 544 { 545 struct vcnl4035_data *data; 546 struct iio_dev *indio_dev; 547 struct regmap *regmap; 548 int ret; 549 550 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 551 if (!indio_dev) 552 return -ENOMEM; 553 554 regmap = devm_regmap_init_i2c(client, &vcnl4035_regmap_config); 555 if (IS_ERR(regmap)) { 556 dev_err(&client->dev, "regmap_init failed!\n"); 557 return PTR_ERR(regmap); 558 } 559 560 data = iio_priv(indio_dev); 561 i2c_set_clientdata(client, indio_dev); 562 data->client = client; 563 data->regmap = regmap; 564 565 indio_dev->info = &vcnl4035_info; 566 indio_dev->name = VCNL4035_DRV_NAME; 567 indio_dev->channels = vcnl4035_channels; 568 indio_dev->num_channels = ARRAY_SIZE(vcnl4035_channels); 569 indio_dev->modes = INDIO_DIRECT_MODE; 570 571 ret = vcnl4035_init(data); 572 if (ret < 0) { 573 dev_err(&client->dev, "vcnl4035 chip init failed\n"); 574 return ret; 575 } 576 577 if (client->irq > 0) { 578 ret = vcnl4035_probe_trigger(indio_dev); 579 if (ret < 0) { 580 dev_err(&client->dev, "vcnl4035 unable init trigger\n"); 581 goto fail_poweroff; 582 } 583 } 584 585 ret = pm_runtime_set_active(&client->dev); 586 if (ret < 0) 587 goto fail_poweroff; 588 589 ret = iio_device_register(indio_dev); 590 if (ret < 0) 591 goto fail_poweroff; 592 593 pm_runtime_enable(&client->dev); 594 pm_runtime_set_autosuspend_delay(&client->dev, VCNL4035_SLEEP_DELAY_MS); 595 pm_runtime_use_autosuspend(&client->dev); 596 597 return 0; 598 599 fail_poweroff: 600 vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); 601 return ret; 602 } 603 604 static int vcnl4035_remove(struct i2c_client *client) 605 { 606 struct iio_dev *indio_dev = i2c_get_clientdata(client); 607 608 pm_runtime_dont_use_autosuspend(&client->dev); 609 pm_runtime_disable(&client->dev); 610 iio_device_unregister(indio_dev); 611 pm_runtime_set_suspended(&client->dev); 612 613 return vcnl4035_set_als_power_state(iio_priv(indio_dev), 614 VCNL4035_MODE_ALS_DISABLE); 615 } 616 617 static int __maybe_unused vcnl4035_runtime_suspend(struct device *dev) 618 { 619 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 620 struct vcnl4035_data *data = iio_priv(indio_dev); 621 int ret; 622 623 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); 624 regcache_mark_dirty(data->regmap); 625 626 return ret; 627 } 628 629 static int __maybe_unused vcnl4035_runtime_resume(struct device *dev) 630 { 631 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 632 struct vcnl4035_data *data = iio_priv(indio_dev); 633 int ret; 634 635 regcache_sync(data->regmap); 636 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); 637 if (ret < 0) 638 return ret; 639 640 /* wait for 1 ALS integration cycle */ 641 msleep(data->als_it_val * 100); 642 643 return 0; 644 } 645 646 static const struct dev_pm_ops vcnl4035_pm_ops = { 647 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 648 pm_runtime_force_resume) 649 SET_RUNTIME_PM_OPS(vcnl4035_runtime_suspend, 650 vcnl4035_runtime_resume, NULL) 651 }; 652 653 static const struct i2c_device_id vcnl4035_id[] = { 654 { "vcnl4035", 0 }, 655 { } 656 }; 657 MODULE_DEVICE_TABLE(i2c, vcnl4035_id); 658 659 static const struct of_device_id vcnl4035_of_match[] = { 660 { .compatible = "vishay,vcnl4035", }, 661 { } 662 }; 663 MODULE_DEVICE_TABLE(of, vcnl4035_of_match); 664 665 static struct i2c_driver vcnl4035_driver = { 666 .driver = { 667 .name = VCNL4035_DRV_NAME, 668 .pm = &vcnl4035_pm_ops, 669 .of_match_table = vcnl4035_of_match, 670 }, 671 .probe = vcnl4035_probe, 672 .remove = vcnl4035_remove, 673 .id_table = vcnl4035_id, 674 }; 675 676 module_i2c_driver(vcnl4035_driver); 677 678 MODULE_AUTHOR("Parthiban Nallathambi <pn@denx.de>"); 679 MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver"); 680 MODULE_LICENSE("GPL v2"); 681