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