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/bitfield.h> 12 #include <linux/i2c.h> 13 #include <linux/module.h> 14 #include <linux/pm_runtime.h> 15 #include <linux/regmap.h> 16 17 #include <linux/iio/buffer.h> 18 #include <linux/iio/events.h> 19 #include <linux/iio/iio.h> 20 #include <linux/iio/sysfs.h> 21 #include <linux/iio/trigger.h> 22 #include <linux/iio/trigger_consumer.h> 23 #include <linux/iio/triggered_buffer.h> 24 25 #define VCNL4035_DRV_NAME "vcnl4035" 26 27 /* Device registers */ 28 #define VCNL4035_ALS_CONF 0x00 29 #define VCNL4035_ALS_THDH 0x01 30 #define VCNL4035_ALS_THDL 0x02 31 #define VCNL4035_ALS_DATA 0x0B 32 #define VCNL4035_WHITE_DATA 0x0C 33 #define VCNL4035_INT_FLAG 0x0D 34 #define VCNL4035_DEV_ID 0x0E 35 36 /* Register masks */ 37 #define VCNL4035_MODE_ALS_MASK BIT(0) 38 #define VCNL4035_MODE_ALS_WHITE_CHAN BIT(8) 39 #define VCNL4035_MODE_ALS_INT_MASK BIT(1) 40 #define VCNL4035_ALS_IT_MASK GENMASK(7, 5) 41 #define VCNL4035_ALS_PERS_MASK GENMASK(3, 2) 42 #define VCNL4035_INT_ALS_IF_H_MASK BIT(12) 43 #define VCNL4035_INT_ALS_IF_L_MASK BIT(13) 44 #define VCNL4035_DEV_ID_MASK GENMASK(7, 0) 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_nested(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 struct { 107 u16 als_data; 108 aligned_s64 timestamp; 109 } buffer = { }; 110 unsigned int val; 111 int ret; 112 113 ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, &val); 114 if (ret < 0) { 115 dev_err(&data->client->dev, 116 "Trigger consumer can't read from sensor.\n"); 117 goto fail_read; 118 } 119 120 buffer.als_data = val; 121 iio_push_to_buffers_with_timestamp(indio_dev, &buffer, 122 iio_get_time_ns(indio_dev)); 123 124 fail_read: 125 iio_trigger_notify_done(indio_dev->trig); 126 127 return IRQ_HANDLED; 128 } 129 130 static int vcnl4035_als_drdy_set_state(struct iio_trigger *trigger, 131 bool enable_drdy) 132 { 133 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trigger); 134 struct vcnl4035_data *data = iio_priv(indio_dev); 135 int val = enable_drdy ? VCNL4035_MODE_ALS_INT_ENABLE : 136 VCNL4035_MODE_ALS_INT_DISABLE; 137 138 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 139 VCNL4035_MODE_ALS_INT_MASK, 140 val); 141 } 142 143 static const struct iio_trigger_ops vcnl4035_trigger_ops = { 144 .validate_device = iio_trigger_validate_own_device, 145 .set_trigger_state = vcnl4035_als_drdy_set_state, 146 }; 147 148 static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on) 149 { 150 struct device *dev = &data->client->dev; 151 152 if (on) 153 return pm_runtime_resume_and_get(dev); 154 155 return pm_runtime_put_autosuspend(dev); 156 } 157 158 static int vcnl4035_read_info_raw(struct iio_dev *indio_dev, 159 struct iio_chan_spec const *chan, int *val) 160 { 161 struct vcnl4035_data *data = iio_priv(indio_dev); 162 int ret; 163 int raw_data; 164 unsigned int reg; 165 166 if (!iio_device_claim_direct(indio_dev)) 167 return -EBUSY; 168 169 if (chan->channel) 170 reg = VCNL4035_ALS_DATA; 171 else 172 reg = VCNL4035_WHITE_DATA; 173 ret = regmap_read(data->regmap, reg, &raw_data); 174 iio_device_release_direct(indio_dev); 175 if (ret) 176 return ret; 177 178 *val = raw_data; 179 180 return IIO_VAL_INT; 181 } 182 183 /* 184 * Device IT INT Time (ms) Scale (lux/step) 185 * 000 50 0.064 186 * 001 100 0.032 187 * 010 200 0.016 188 * 100 400 0.008 189 * 101 - 111 800 0.004 190 * Values are proportional, so ALS INT is selected for input due to 191 * simplicity reason. Integration time value and scaling is 192 * calculated based on device INT value 193 * 194 * Raw value needs to be scaled using ALS steps 195 */ 196 static int vcnl4035_read_raw(struct iio_dev *indio_dev, 197 struct iio_chan_spec const *chan, int *val, 198 int *val2, long mask) 199 { 200 struct vcnl4035_data *data = iio_priv(indio_dev); 201 int ret; 202 203 switch (mask) { 204 case IIO_CHAN_INFO_RAW: 205 ret = vcnl4035_set_pm_runtime_state(data, true); 206 if (ret < 0) 207 return ret; 208 ret = vcnl4035_read_info_raw(indio_dev, chan, val); 209 vcnl4035_set_pm_runtime_state(data, false); 210 return ret; 211 case IIO_CHAN_INFO_INT_TIME: 212 *val = 50; 213 if (data->als_it_val) 214 *val = data->als_it_val * 100; 215 return IIO_VAL_INT; 216 case IIO_CHAN_INFO_SCALE: 217 *val = 64; 218 if (!data->als_it_val) 219 *val2 = 1000; 220 else 221 *val2 = data->als_it_val * 2 * 1000; 222 return IIO_VAL_FRACTIONAL; 223 default: 224 return -EINVAL; 225 } 226 } 227 228 static int vcnl4035_write_raw(struct iio_dev *indio_dev, 229 struct iio_chan_spec const *chan, 230 int val, int val2, long mask) 231 { 232 int ret; 233 struct vcnl4035_data *data = iio_priv(indio_dev); 234 235 switch (mask) { 236 case IIO_CHAN_INFO_INT_TIME: 237 if (val <= 0 || val > 800) 238 return -EINVAL; 239 240 ret = vcnl4035_set_pm_runtime_state(data, true); 241 if (ret < 0) 242 return ret; 243 244 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 245 VCNL4035_ALS_IT_MASK, 246 val / 100); 247 if (!ret) 248 data->als_it_val = val / 100; 249 250 vcnl4035_set_pm_runtime_state(data, false); 251 return ret; 252 default: 253 return -EINVAL; 254 } 255 } 256 257 /* No direct ABI for persistence and threshold, so eventing */ 258 static int vcnl4035_read_thresh(struct iio_dev *indio_dev, 259 const struct iio_chan_spec *chan, enum iio_event_type type, 260 enum iio_event_direction dir, enum iio_event_info info, 261 int *val, int *val2) 262 { 263 struct vcnl4035_data *data = iio_priv(indio_dev); 264 265 switch (info) { 266 case IIO_EV_INFO_VALUE: 267 switch (dir) { 268 case IIO_EV_DIR_RISING: 269 *val = data->als_thresh_high; 270 return IIO_VAL_INT; 271 case IIO_EV_DIR_FALLING: 272 *val = data->als_thresh_low; 273 return IIO_VAL_INT; 274 default: 275 return -EINVAL; 276 } 277 break; 278 case IIO_EV_INFO_PERIOD: 279 *val = data->als_persistence; 280 return IIO_VAL_INT; 281 default: 282 return -EINVAL; 283 } 284 285 } 286 287 static int vcnl4035_write_thresh(struct iio_dev *indio_dev, 288 const struct iio_chan_spec *chan, enum iio_event_type type, 289 enum iio_event_direction dir, enum iio_event_info info, int val, 290 int val2) 291 { 292 struct vcnl4035_data *data = iio_priv(indio_dev); 293 int ret; 294 295 switch (info) { 296 case IIO_EV_INFO_VALUE: 297 /* 16 bit threshold range 0 - 65535 */ 298 if (val < 0 || val > 65535) 299 return -EINVAL; 300 if (dir == IIO_EV_DIR_RISING) { 301 if (val < data->als_thresh_low) 302 return -EINVAL; 303 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, 304 val); 305 if (ret) 306 return ret; 307 data->als_thresh_high = val; 308 } else { 309 if (val > data->als_thresh_high) 310 return -EINVAL; 311 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, 312 val); 313 if (ret) 314 return ret; 315 data->als_thresh_low = val; 316 } 317 return ret; 318 case IIO_EV_INFO_PERIOD: 319 /* allow only 1 2 4 8 as persistence value */ 320 if (val < 0 || val > 8 || hweight8(val) != 1) 321 return -EINVAL; 322 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 323 VCNL4035_ALS_PERS_MASK, val); 324 if (!ret) 325 data->als_persistence = val; 326 return ret; 327 default: 328 return -EINVAL; 329 } 330 } 331 332 static IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800"); 333 334 static struct attribute *vcnl4035_attributes[] = { 335 &iio_const_attr_integration_time_available.dev_attr.attr, 336 NULL, 337 }; 338 339 static const struct attribute_group vcnl4035_attribute_group = { 340 .attrs = vcnl4035_attributes, 341 }; 342 343 static const struct iio_info vcnl4035_info = { 344 .read_raw = vcnl4035_read_raw, 345 .write_raw = vcnl4035_write_raw, 346 .read_event_value = vcnl4035_read_thresh, 347 .write_event_value = vcnl4035_write_thresh, 348 .attrs = &vcnl4035_attribute_group, 349 }; 350 351 static const struct iio_event_spec vcnl4035_event_spec[] = { 352 { 353 .type = IIO_EV_TYPE_THRESH, 354 .dir = IIO_EV_DIR_RISING, 355 .mask_separate = BIT(IIO_EV_INFO_VALUE), 356 }, { 357 .type = IIO_EV_TYPE_THRESH, 358 .dir = IIO_EV_DIR_FALLING, 359 .mask_separate = BIT(IIO_EV_INFO_VALUE), 360 }, { 361 .type = IIO_EV_TYPE_THRESH, 362 .dir = IIO_EV_DIR_EITHER, 363 .mask_separate = BIT(IIO_EV_INFO_PERIOD), 364 }, 365 }; 366 367 enum vcnl4035_scan_index_order { 368 VCNL4035_CHAN_INDEX_LIGHT, 369 VCNL4035_CHAN_INDEX_WHITE_LED, 370 }; 371 372 static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = { 373 .validate_scan_mask = &iio_validate_scan_mask_onehot, 374 }; 375 376 static const struct iio_chan_spec vcnl4035_channels[] = { 377 { 378 .type = IIO_LIGHT, 379 .channel = 0, 380 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | 381 BIT(IIO_CHAN_INFO_INT_TIME) | 382 BIT(IIO_CHAN_INFO_SCALE), 383 .event_spec = vcnl4035_event_spec, 384 .num_event_specs = ARRAY_SIZE(vcnl4035_event_spec), 385 .scan_index = VCNL4035_CHAN_INDEX_LIGHT, 386 .scan_type = { 387 .sign = 'u', 388 .realbits = 16, 389 .storagebits = 16, 390 .endianness = IIO_CPU, 391 }, 392 }, 393 { 394 .type = IIO_INTENSITY, 395 .channel = 1, 396 .modified = 1, 397 .channel2 = IIO_MOD_LIGHT_BOTH, 398 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 399 .scan_index = VCNL4035_CHAN_INDEX_WHITE_LED, 400 .scan_type = { 401 .sign = 'u', 402 .realbits = 16, 403 .storagebits = 16, 404 .endianness = IIO_CPU, 405 }, 406 }, 407 }; 408 409 static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status) 410 { 411 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 412 VCNL4035_MODE_ALS_MASK, 413 status); 414 } 415 416 static int vcnl4035_init(struct vcnl4035_data *data) 417 { 418 int ret; 419 int id; 420 421 ret = regmap_read(data->regmap, VCNL4035_DEV_ID, &id); 422 if (ret < 0) { 423 dev_err(&data->client->dev, "Failed to read DEV_ID register\n"); 424 return ret; 425 } 426 427 id = FIELD_GET(VCNL4035_DEV_ID_MASK, id); 428 if (id != VCNL4035_DEV_ID_VAL) { 429 dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n", 430 id, VCNL4035_DEV_ID_VAL); 431 return -ENODEV; 432 } 433 434 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); 435 if (ret < 0) 436 return ret; 437 438 /* ALS white channel enable */ 439 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 440 VCNL4035_MODE_ALS_WHITE_CHAN, 441 1); 442 if (ret) { 443 dev_err(&data->client->dev, "set white channel enable %d\n", 444 ret); 445 return ret; 446 } 447 448 /* set default integration time - 100 ms for ALS */ 449 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 450 VCNL4035_ALS_IT_MASK, 451 VCNL4035_ALS_IT_DEFAULT); 452 if (ret) { 453 dev_err(&data->client->dev, "set default ALS IT returned %d\n", 454 ret); 455 return ret; 456 } 457 data->als_it_val = VCNL4035_ALS_IT_DEFAULT; 458 459 /* set default persistence time - 1 for ALS */ 460 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 461 VCNL4035_ALS_PERS_MASK, 462 VCNL4035_ALS_PERS_DEFAULT); 463 if (ret) { 464 dev_err(&data->client->dev, "set default PERS returned %d\n", 465 ret); 466 return ret; 467 } 468 data->als_persistence = VCNL4035_ALS_PERS_DEFAULT; 469 470 /* set default HIGH threshold for ALS */ 471 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, 472 VCNL4035_ALS_THDH_DEFAULT); 473 if (ret) { 474 dev_err(&data->client->dev, "set default THDH returned %d\n", 475 ret); 476 return ret; 477 } 478 data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT; 479 480 /* set default LOW threshold for ALS */ 481 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, 482 VCNL4035_ALS_THDL_DEFAULT); 483 if (ret) { 484 dev_err(&data->client->dev, "set default THDL returned %d\n", 485 ret); 486 return ret; 487 } 488 data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT; 489 490 return 0; 491 } 492 493 static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg) 494 { 495 switch (reg) { 496 case VCNL4035_ALS_CONF: 497 case VCNL4035_DEV_ID: 498 return false; 499 default: 500 return true; 501 } 502 } 503 504 static const struct regmap_config vcnl4035_regmap_config = { 505 .name = "vcnl4035_regmap", 506 .reg_bits = 8, 507 .val_bits = 16, 508 .max_register = VCNL4035_DEV_ID, 509 .cache_type = REGCACHE_RBTREE, 510 .volatile_reg = vcnl4035_is_volatile_reg, 511 .val_format_endian = REGMAP_ENDIAN_LITTLE, 512 }; 513 514 static int vcnl4035_probe_trigger(struct iio_dev *indio_dev) 515 { 516 int ret; 517 struct vcnl4035_data *data = iio_priv(indio_dev); 518 519 data->drdy_trigger0 = devm_iio_trigger_alloc( 520 indio_dev->dev.parent, 521 "%s-dev%d", indio_dev->name, iio_device_id(indio_dev)); 522 if (!data->drdy_trigger0) 523 return -ENOMEM; 524 525 data->drdy_trigger0->ops = &vcnl4035_trigger_ops; 526 iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev); 527 ret = devm_iio_trigger_register(indio_dev->dev.parent, 528 data->drdy_trigger0); 529 if (ret) { 530 dev_err(&data->client->dev, "iio trigger register failed\n"); 531 return ret; 532 } 533 534 /* Trigger setup */ 535 ret = devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, 536 NULL, vcnl4035_trigger_consumer_handler, 537 &iio_triggered_buffer_setup_ops); 538 if (ret < 0) { 539 dev_err(&data->client->dev, "iio triggered buffer setup failed\n"); 540 return ret; 541 } 542 543 /* IRQ to trigger mapping */ 544 ret = devm_request_threaded_irq(&data->client->dev, data->client->irq, 545 NULL, vcnl4035_drdy_irq_thread, 546 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 547 "vcnl4035_event", indio_dev); 548 if (ret < 0) 549 dev_err(&data->client->dev, "request irq %d for trigger0 failed\n", 550 data->client->irq); 551 return ret; 552 } 553 554 static int vcnl4035_probe(struct i2c_client *client) 555 { 556 struct vcnl4035_data *data; 557 struct iio_dev *indio_dev; 558 struct regmap *regmap; 559 int ret; 560 561 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 562 if (!indio_dev) 563 return -ENOMEM; 564 565 regmap = devm_regmap_init_i2c(client, &vcnl4035_regmap_config); 566 if (IS_ERR(regmap)) { 567 dev_err(&client->dev, "regmap_init failed!\n"); 568 return PTR_ERR(regmap); 569 } 570 571 data = iio_priv(indio_dev); 572 i2c_set_clientdata(client, indio_dev); 573 data->client = client; 574 data->regmap = regmap; 575 576 indio_dev->info = &vcnl4035_info; 577 indio_dev->name = VCNL4035_DRV_NAME; 578 indio_dev->channels = vcnl4035_channels; 579 indio_dev->num_channels = ARRAY_SIZE(vcnl4035_channels); 580 indio_dev->modes = INDIO_DIRECT_MODE; 581 582 ret = vcnl4035_init(data); 583 if (ret < 0) { 584 dev_err(&client->dev, "vcnl4035 chip init failed\n"); 585 return ret; 586 } 587 588 if (client->irq > 0) { 589 ret = vcnl4035_probe_trigger(indio_dev); 590 if (ret < 0) { 591 dev_err(&client->dev, "vcnl4035 unable init trigger\n"); 592 goto fail_poweroff; 593 } 594 } 595 596 ret = pm_runtime_set_active(&client->dev); 597 if (ret < 0) 598 goto fail_poweroff; 599 600 ret = iio_device_register(indio_dev); 601 if (ret < 0) 602 goto fail_poweroff; 603 604 pm_runtime_enable(&client->dev); 605 pm_runtime_set_autosuspend_delay(&client->dev, VCNL4035_SLEEP_DELAY_MS); 606 pm_runtime_use_autosuspend(&client->dev); 607 608 return 0; 609 610 fail_poweroff: 611 vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); 612 return ret; 613 } 614 615 static void vcnl4035_remove(struct i2c_client *client) 616 { 617 struct iio_dev *indio_dev = i2c_get_clientdata(client); 618 int ret; 619 620 pm_runtime_dont_use_autosuspend(&client->dev); 621 pm_runtime_disable(&client->dev); 622 iio_device_unregister(indio_dev); 623 pm_runtime_set_suspended(&client->dev); 624 625 ret = vcnl4035_set_als_power_state(iio_priv(indio_dev), 626 VCNL4035_MODE_ALS_DISABLE); 627 if (ret) 628 dev_warn(&client->dev, "Failed to put device into standby (%pe)\n", 629 ERR_PTR(ret)); 630 } 631 632 static int vcnl4035_runtime_suspend(struct device *dev) 633 { 634 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 635 struct vcnl4035_data *data = iio_priv(indio_dev); 636 int ret; 637 638 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); 639 regcache_mark_dirty(data->regmap); 640 641 return ret; 642 } 643 644 static int vcnl4035_runtime_resume(struct device *dev) 645 { 646 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 647 struct vcnl4035_data *data = iio_priv(indio_dev); 648 int ret; 649 650 regcache_sync(data->regmap); 651 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); 652 if (ret < 0) 653 return ret; 654 655 /* wait for 1 ALS integration cycle */ 656 msleep(data->als_it_val * 100); 657 658 return 0; 659 } 660 661 static DEFINE_RUNTIME_DEV_PM_OPS(vcnl4035_pm_ops, vcnl4035_runtime_suspend, 662 vcnl4035_runtime_resume, NULL); 663 664 static const struct i2c_device_id vcnl4035_id[] = { 665 { "vcnl4035" }, 666 { } 667 }; 668 MODULE_DEVICE_TABLE(i2c, vcnl4035_id); 669 670 static const struct of_device_id vcnl4035_of_match[] = { 671 { .compatible = "vishay,vcnl4035", }, 672 { } 673 }; 674 MODULE_DEVICE_TABLE(of, vcnl4035_of_match); 675 676 static struct i2c_driver vcnl4035_driver = { 677 .driver = { 678 .name = VCNL4035_DRV_NAME, 679 .pm = pm_ptr(&vcnl4035_pm_ops), 680 .of_match_table = vcnl4035_of_match, 681 }, 682 .probe = vcnl4035_probe, 683 .remove = vcnl4035_remove, 684 .id_table = vcnl4035_id, 685 }; 686 687 module_i2c_driver(vcnl4035_driver); 688 689 MODULE_AUTHOR("Parthiban Nallathambi <pn@denx.de>"); 690 MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver"); 691 MODULE_LICENSE("GPL v2"); 692