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#define VCNL4035_IRQ_NAME "vcnl4035_event" 27#define VCNL4035_REGMAP_NAME "vcnl4035_regmap" 28 29/* Device registers */ 30#define VCNL4035_ALS_CONF 0x00 31#define VCNL4035_ALS_THDH 0x01 32#define VCNL4035_ALS_THDL 0x02 33#define VCNL4035_ALS_DATA 0x0B 34#define VCNL4035_WHITE_DATA 0x0C 35#define VCNL4035_INT_FLAG 0x0D 36#define VCNL4035_DEV_ID 0x0E 37 38/* Register masks */ 39#define VCNL4035_MODE_ALS_MASK BIT(0) 40#define VCNL4035_MODE_ALS_WHITE_CHAN BIT(8) 41#define VCNL4035_MODE_ALS_INT_MASK BIT(1) 42#define VCNL4035_ALS_IT_MASK GENMASK(7, 5) 43#define VCNL4035_ALS_PERS_MASK GENMASK(3, 2) 44#define VCNL4035_INT_ALS_IF_H_MASK BIT(12) 45#define VCNL4035_INT_ALS_IF_L_MASK BIT(13) 46#define VCNL4035_DEV_ID_MASK GENMASK(7, 0) 47 48/* Default values */ 49#define VCNL4035_MODE_ALS_ENABLE BIT(0) 50#define VCNL4035_MODE_ALS_DISABLE 0x00 51#define VCNL4035_MODE_ALS_INT_ENABLE BIT(1) 52#define VCNL4035_MODE_ALS_INT_DISABLE 0 53#define VCNL4035_DEV_ID_VAL 0x80 54#define VCNL4035_ALS_IT_DEFAULT 0x01 55#define VCNL4035_ALS_PERS_DEFAULT 0x00 56#define VCNL4035_ALS_THDH_DEFAULT 5000 57#define VCNL4035_ALS_THDL_DEFAULT 100 58#define VCNL4035_SLEEP_DELAY_MS 2000 59 60struct vcnl4035_data { 61 struct i2c_client *client; 62 struct regmap *regmap; 63 unsigned int als_it_val; 64 unsigned int als_persistence; 65 unsigned int als_thresh_low; 66 unsigned int als_thresh_high; 67 struct iio_trigger *drdy_trigger0; 68}; 69 70static inline bool vcnl4035_is_triggered(struct vcnl4035_data *data) 71{ 72 int ret; 73 int reg; 74 75 ret = regmap_read(data->regmap, VCNL4035_INT_FLAG, ®); 76 if (ret < 0) 77 return false; 78 79 return !!(reg & 80 (VCNL4035_INT_ALS_IF_H_MASK | VCNL4035_INT_ALS_IF_L_MASK)); 81} 82 83static irqreturn_t vcnl4035_drdy_irq_thread(int irq, void *private) 84{ 85 struct iio_dev *indio_dev = private; 86 struct vcnl4035_data *data = iio_priv(indio_dev); 87 88 if (vcnl4035_is_triggered(data)) { 89 iio_push_event(indio_dev, IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 90 0, 91 IIO_EV_TYPE_THRESH, 92 IIO_EV_DIR_EITHER), 93 iio_get_time_ns(indio_dev)); 94 iio_trigger_poll_chained(data->drdy_trigger0); 95 return IRQ_HANDLED; 96 } 97 98 return IRQ_NONE; 99} 100 101/* Triggered buffer */ 102static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p) 103{ 104 struct iio_poll_func *pf = p; 105 struct iio_dev *indio_dev = pf->indio_dev; 106 struct vcnl4035_data *data = iio_priv(indio_dev); 107 /* Ensure naturally aligned timestamp */ 108 u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)] __aligned(8); 109 int ret; 110 111 ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, (int *)buffer); 112 if (ret < 0) { 113 dev_err(&data->client->dev, 114 "Trigger consumer can't read from sensor.\n"); 115 goto fail_read; 116 } 117 iio_push_to_buffers_with_timestamp(indio_dev, buffer, 118 iio_get_time_ns(indio_dev)); 119 120fail_read: 121 iio_trigger_notify_done(indio_dev->trig); 122 123 return IRQ_HANDLED; 124} 125 126static int vcnl4035_als_drdy_set_state(struct iio_trigger *trigger, 127 bool enable_drdy) 128{ 129 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trigger); 130 struct vcnl4035_data *data = iio_priv(indio_dev); 131 int val = enable_drdy ? VCNL4035_MODE_ALS_INT_ENABLE : 132 VCNL4035_MODE_ALS_INT_DISABLE; 133 134 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 135 VCNL4035_MODE_ALS_INT_MASK, 136 val); 137} 138 139static const struct iio_trigger_ops vcnl4035_trigger_ops = { 140 .validate_device = iio_trigger_validate_own_device, 141 .set_trigger_state = vcnl4035_als_drdy_set_state, 142}; 143 144static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on) 145{ 146 int ret; 147 struct device *dev = &data->client->dev; 148 149 if (on) { 150 ret = pm_runtime_get_sync(dev); 151 if (ret < 0) 152 pm_runtime_put_noidle(dev); 153 } else { 154 pm_runtime_mark_last_busy(dev); 155 ret = pm_runtime_put_autosuspend(dev); 156 } 157 158 return ret; 159} 160 161/* 162 * Device IT INT Time (ms) Scale (lux/step) 163 * 000 50 0.064 164 * 001 100 0.032 165 * 010 200 0.016 166 * 100 400 0.008 167 * 101 - 111 800 0.004 168 * Values are proportional, so ALS INT is selected for input due to 169 * simplicity reason. Integration time value and scaling is 170 * calculated based on device INT value 171 * 172 * Raw value needs to be scaled using ALS steps 173 */ 174static int vcnl4035_read_raw(struct iio_dev *indio_dev, 175 struct iio_chan_spec const *chan, int *val, 176 int *val2, long mask) 177{ 178 struct vcnl4035_data *data = iio_priv(indio_dev); 179 int ret; 180 int raw_data; 181 unsigned int reg; 182 183 switch (mask) { 184 case IIO_CHAN_INFO_RAW: 185 ret = vcnl4035_set_pm_runtime_state(data, true); 186 if (ret < 0) 187 return ret; 188 189 ret = iio_device_claim_direct_mode(indio_dev); 190 if (!ret) { 191 if (chan->channel) 192 reg = VCNL4035_ALS_DATA; 193 else 194 reg = VCNL4035_WHITE_DATA; 195 ret = regmap_read(data->regmap, reg, &raw_data); 196 iio_device_release_direct_mode(indio_dev); 197 if (!ret) { 198 *val = raw_data; 199 ret = IIO_VAL_INT; 200 } 201 } 202 vcnl4035_set_pm_runtime_state(data, false); 203 return ret; 204 case IIO_CHAN_INFO_INT_TIME: 205 *val = 50; 206 if (data->als_it_val) 207 *val = data->als_it_val * 100; 208 return IIO_VAL_INT; 209 case IIO_CHAN_INFO_SCALE: 210 *val = 64; 211 if (!data->als_it_val) 212 *val2 = 1000; 213 else 214 *val2 = data->als_it_val * 2 * 1000; 215 return IIO_VAL_FRACTIONAL; 216 default: 217 return -EINVAL; 218 } 219} 220 221static int vcnl4035_write_raw(struct iio_dev *indio_dev, 222 struct iio_chan_spec const *chan, 223 int val, int val2, long mask) 224{ 225 int ret; 226 struct vcnl4035_data *data = iio_priv(indio_dev); 227 228 switch (mask) { 229 case IIO_CHAN_INFO_INT_TIME: 230 if (val <= 0 || val > 800) 231 return -EINVAL; 232 233 ret = vcnl4035_set_pm_runtime_state(data, true); 234 if (ret < 0) 235 return ret; 236 237 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 238 VCNL4035_ALS_IT_MASK, 239 val / 100); 240 if (!ret) 241 data->als_it_val = val / 100; 242 243 vcnl4035_set_pm_runtime_state(data, false); 244 return ret; 245 default: 246 return -EINVAL; 247 } 248} 249 250/* No direct ABI for persistence and threshold, so eventing */ 251static int vcnl4035_read_thresh(struct iio_dev *indio_dev, 252 const struct iio_chan_spec *chan, enum iio_event_type type, 253 enum iio_event_direction dir, enum iio_event_info info, 254 int *val, int *val2) 255{ 256 struct vcnl4035_data *data = iio_priv(indio_dev); 257 258 switch (info) { 259 case IIO_EV_INFO_VALUE: 260 switch (dir) { 261 case IIO_EV_DIR_RISING: 262 *val = data->als_thresh_high; 263 return IIO_VAL_INT; 264 case IIO_EV_DIR_FALLING: 265 *val = data->als_thresh_low; 266 return IIO_VAL_INT; 267 default: 268 return -EINVAL; 269 } 270 break; 271 case IIO_EV_INFO_PERIOD: 272 *val = data->als_persistence; 273 return IIO_VAL_INT; 274 default: 275 return -EINVAL; 276 } 277 278} 279 280static int vcnl4035_write_thresh(struct iio_dev *indio_dev, 281 const struct iio_chan_spec *chan, enum iio_event_type type, 282 enum iio_event_direction dir, enum iio_event_info info, int val, 283 int val2) 284{ 285 struct vcnl4035_data *data = iio_priv(indio_dev); 286 int ret; 287 288 switch (info) { 289 case IIO_EV_INFO_VALUE: 290 /* 16 bit threshold range 0 - 65535 */ 291 if (val < 0 || val > 65535) 292 return -EINVAL; 293 if (dir == IIO_EV_DIR_RISING) { 294 if (val < data->als_thresh_low) 295 return -EINVAL; 296 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, 297 val); 298 if (ret) 299 return ret; 300 data->als_thresh_high = val; 301 } else { 302 if (val > data->als_thresh_high) 303 return -EINVAL; 304 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, 305 val); 306 if (ret) 307 return ret; 308 data->als_thresh_low = val; 309 } 310 return ret; 311 case IIO_EV_INFO_PERIOD: 312 /* allow only 1 2 4 8 as persistence value */ 313 if (val < 0 || val > 8 || hweight8(val) != 1) 314 return -EINVAL; 315 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 316 VCNL4035_ALS_PERS_MASK, val); 317 if (!ret) 318 data->als_persistence = val; 319 return ret; 320 default: 321 return -EINVAL; 322 } 323} 324 325static IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800"); 326 327static struct attribute *vcnl4035_attributes[] = { 328 &iio_const_attr_integration_time_available.dev_attr.attr, 329 NULL, 330}; 331 332static const struct attribute_group vcnl4035_attribute_group = { 333 .attrs = vcnl4035_attributes, 334}; 335 336static const struct iio_info vcnl4035_info = { 337 .read_raw = vcnl4035_read_raw, 338 .write_raw = vcnl4035_write_raw, 339 .read_event_value = vcnl4035_read_thresh, 340 .write_event_value = vcnl4035_write_thresh, 341 .attrs = &vcnl4035_attribute_group, 342}; 343 344static const struct iio_event_spec vcnl4035_event_spec[] = { 345 { 346 .type = IIO_EV_TYPE_THRESH, 347 .dir = IIO_EV_DIR_RISING, 348 .mask_separate = BIT(IIO_EV_INFO_VALUE), 349 }, { 350 .type = IIO_EV_TYPE_THRESH, 351 .dir = IIO_EV_DIR_FALLING, 352 .mask_separate = BIT(IIO_EV_INFO_VALUE), 353 }, { 354 .type = IIO_EV_TYPE_THRESH, 355 .dir = IIO_EV_DIR_EITHER, 356 .mask_separate = BIT(IIO_EV_INFO_PERIOD), 357 }, 358}; 359 360enum vcnl4035_scan_index_order { 361 VCNL4035_CHAN_INDEX_LIGHT, 362 VCNL4035_CHAN_INDEX_WHITE_LED, 363}; 364 365static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = { 366 .validate_scan_mask = &iio_validate_scan_mask_onehot, 367}; 368 369static const struct iio_chan_spec vcnl4035_channels[] = { 370 { 371 .type = IIO_LIGHT, 372 .channel = 0, 373 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | 374 BIT(IIO_CHAN_INFO_INT_TIME) | 375 BIT(IIO_CHAN_INFO_SCALE), 376 .event_spec = vcnl4035_event_spec, 377 .num_event_specs = ARRAY_SIZE(vcnl4035_event_spec), 378 .scan_index = VCNL4035_CHAN_INDEX_LIGHT, 379 .scan_type = { 380 .sign = 'u', 381 .realbits = 16, 382 .storagebits = 16, 383 .endianness = IIO_LE, 384 }, 385 }, 386 { 387 .type = IIO_INTENSITY, 388 .channel = 1, 389 .modified = 1, 390 .channel2 = IIO_MOD_LIGHT_BOTH, 391 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 392 .scan_index = VCNL4035_CHAN_INDEX_WHITE_LED, 393 .scan_type = { 394 .sign = 'u', 395 .realbits = 16, 396 .storagebits = 16, 397 .endianness = IIO_LE, 398 }, 399 }, 400}; 401 402static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status) 403{ 404 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 405 VCNL4035_MODE_ALS_MASK, 406 status); 407} 408 409static int vcnl4035_init(struct vcnl4035_data *data) 410{ 411 int ret; 412 int id; 413 414 ret = regmap_read(data->regmap, VCNL4035_DEV_ID, &id); 415 if (ret < 0) { 416 dev_err(&data->client->dev, "Failed to read DEV_ID register\n"); 417 return ret; 418 } 419 420 id = FIELD_GET(VCNL4035_DEV_ID_MASK, id); 421 if (id != VCNL4035_DEV_ID_VAL) { 422 dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n", 423 id, VCNL4035_DEV_ID_VAL); 424 return -ENODEV; 425 } 426 427 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); 428 if (ret < 0) 429 return ret; 430 431 /* ALS white channel enable */ 432 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 433 VCNL4035_MODE_ALS_WHITE_CHAN, 434 1); 435 if (ret) { 436 dev_err(&data->client->dev, "set white channel enable %d\n", 437 ret); 438 return ret; 439 } 440 441 /* set default integration time - 100 ms for ALS */ 442 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 443 VCNL4035_ALS_IT_MASK, 444 VCNL4035_ALS_IT_DEFAULT); 445 if (ret) { 446 dev_err(&data->client->dev, "set default ALS IT returned %d\n", 447 ret); 448 return ret; 449 } 450 data->als_it_val = VCNL4035_ALS_IT_DEFAULT; 451 452 /* set default persistence time - 1 for ALS */ 453 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 454 VCNL4035_ALS_PERS_MASK, 455 VCNL4035_ALS_PERS_DEFAULT); 456 if (ret) { 457 dev_err(&data->client->dev, "set default PERS returned %d\n", 458 ret); 459 return ret; 460 } 461 data->als_persistence = VCNL4035_ALS_PERS_DEFAULT; 462 463 /* set default HIGH threshold for ALS */ 464 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, 465 VCNL4035_ALS_THDH_DEFAULT); 466 if (ret) { 467 dev_err(&data->client->dev, "set default THDH returned %d\n", 468 ret); 469 return ret; 470 } 471 data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT; 472 473 /* set default LOW threshold for ALS */ 474 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, 475 VCNL4035_ALS_THDL_DEFAULT); 476 if (ret) { 477 dev_err(&data->client->dev, "set default THDL returned %d\n", 478 ret); 479 return ret; 480 } 481 data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT; 482 483 return 0; 484} 485 486static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg) 487{ 488 switch (reg) { 489 case VCNL4035_ALS_CONF: 490 case VCNL4035_DEV_ID: 491 return false; 492 default: 493 return true; 494 } 495} 496 497static const struct regmap_config vcnl4035_regmap_config = { 498 .name = VCNL4035_REGMAP_NAME, 499 .reg_bits = 8, 500 .val_bits = 16, 501 .max_register = VCNL4035_DEV_ID, 502 .cache_type = REGCACHE_RBTREE, 503 .volatile_reg = vcnl4035_is_volatile_reg, 504 .val_format_endian = REGMAP_ENDIAN_LITTLE, 505}; 506 507static int vcnl4035_probe_trigger(struct iio_dev *indio_dev) 508{ 509 int ret; 510 struct vcnl4035_data *data = iio_priv(indio_dev); 511 512 data->drdy_trigger0 = devm_iio_trigger_alloc( 513 indio_dev->dev.parent, 514 "%s-dev%d", indio_dev->name, indio_dev->id); 515 if (!data->drdy_trigger0) 516 return -ENOMEM; 517 518 data->drdy_trigger0->dev.parent = indio_dev->dev.parent; 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_IRQ_NAME, 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 548static int vcnl4035_probe(struct i2c_client *client, 549 const struct i2c_device_id *id) 550{ 551 struct vcnl4035_data *data; 552 struct iio_dev *indio_dev; 553 struct regmap *regmap; 554 int ret; 555 556 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 557 if (!indio_dev) 558 return -ENOMEM; 559 560 regmap = devm_regmap_init_i2c(client, &vcnl4035_regmap_config); 561 if (IS_ERR(regmap)) { 562 dev_err(&client->dev, "regmap_init failed!\n"); 563 return PTR_ERR(regmap); 564 } 565 566 data = iio_priv(indio_dev); 567 i2c_set_clientdata(client, indio_dev); 568 data->client = client; 569 data->regmap = regmap; 570 571 indio_dev->info = &vcnl4035_info; 572 indio_dev->name = VCNL4035_DRV_NAME; 573 indio_dev->channels = vcnl4035_channels; 574 indio_dev->num_channels = ARRAY_SIZE(vcnl4035_channels); 575 indio_dev->modes = INDIO_DIRECT_MODE; 576 577 ret = vcnl4035_init(data); 578 if (ret < 0) { 579 dev_err(&client->dev, "vcnl4035 chip init failed\n"); 580 return ret; 581 } 582 583 if (client->irq > 0) { 584 ret = vcnl4035_probe_trigger(indio_dev); 585 if (ret < 0) { 586 dev_err(&client->dev, "vcnl4035 unable init trigger\n"); 587 goto fail_poweroff; 588 } 589 } 590 591 ret = pm_runtime_set_active(&client->dev); 592 if (ret < 0) 593 goto fail_poweroff; 594 595 ret = iio_device_register(indio_dev); 596 if (ret < 0) 597 goto fail_poweroff; 598 599 pm_runtime_enable(&client->dev); 600 pm_runtime_set_autosuspend_delay(&client->dev, VCNL4035_SLEEP_DELAY_MS); 601 pm_runtime_use_autosuspend(&client->dev); 602 603 return 0; 604 605fail_poweroff: 606 vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); 607 return ret; 608} 609 610static int vcnl4035_remove(struct i2c_client *client) 611{ 612 struct iio_dev *indio_dev = i2c_get_clientdata(client); 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 return vcnl4035_set_als_power_state(iio_priv(indio_dev), 620 VCNL4035_MODE_ALS_DISABLE); 621} 622 623static int __maybe_unused vcnl4035_runtime_suspend(struct device *dev) 624{ 625 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 626 struct vcnl4035_data *data = iio_priv(indio_dev); 627 int ret; 628 629 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); 630 regcache_mark_dirty(data->regmap); 631 632 return ret; 633} 634 635static int __maybe_unused vcnl4035_runtime_resume(struct device *dev) 636{ 637 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 638 struct vcnl4035_data *data = iio_priv(indio_dev); 639 int ret; 640 641 regcache_sync(data->regmap); 642 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); 643 if (ret < 0) 644 return ret; 645 646 /* wait for 1 ALS integration cycle */ 647 msleep(data->als_it_val * 100); 648 649 return 0; 650} 651 652static const struct dev_pm_ops vcnl4035_pm_ops = { 653 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 654 pm_runtime_force_resume) 655 SET_RUNTIME_PM_OPS(vcnl4035_runtime_suspend, 656 vcnl4035_runtime_resume, NULL) 657}; 658 659static const struct of_device_id vcnl4035_of_match[] = { 660 { .compatible = "vishay,vcnl4035", }, 661 { } 662}; 663MODULE_DEVICE_TABLE(of, vcnl4035_of_match); 664 665static 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}; 674 675module_i2c_driver(vcnl4035_driver); 676 677MODULE_AUTHOR("Parthiban Nallathambi <pn@denx.de>"); 678MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver"); 679MODULE_LICENSE("GPL v2"); 680