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