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 60 struct 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 70 static 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 83 static 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_nested(data->drdy_trigger0); 95 return IRQ_HANDLED; 96 } 97 98 return IRQ_NONE; 99 } 100 101 /* Triggered buffer */ 102 static 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)); 119 120 fail_read: 121 iio_trigger_notify_done(indio_dev->trig); 122 123 return IRQ_HANDLED; 124 } 125 126 static 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 } 138 139 static 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 }; 143 144 static 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_resume_and_get(dev); 151 } else { 152 pm_runtime_mark_last_busy(dev); 153 ret = pm_runtime_put_autosuspend(dev); 154 } 155 156 return ret; 157 } 158 159 /* 160 * Device IT INT Time (ms) Scale (lux/step) 161 * 000 50 0.064 162 * 001 100 0.032 163 * 010 200 0.016 164 * 100 400 0.008 165 * 101 - 111 800 0.004 166 * Values are proportional, so ALS INT is selected for input due to 167 * simplicity reason. Integration time value and scaling is 168 * calculated based on device INT value 169 * 170 * Raw value needs to be scaled using ALS steps 171 */ 172 static int vcnl4035_read_raw(struct iio_dev *indio_dev, 173 struct iio_chan_spec const *chan, int *val, 174 int *val2, long mask) 175 { 176 struct vcnl4035_data *data = iio_priv(indio_dev); 177 int ret; 178 int raw_data; 179 unsigned int reg; 180 181 switch (mask) { 182 case IIO_CHAN_INFO_RAW: 183 ret = vcnl4035_set_pm_runtime_state(data, true); 184 if (ret < 0) 185 return ret; 186 187 ret = iio_device_claim_direct_mode(indio_dev); 188 if (!ret) { 189 if (chan->channel) 190 reg = VCNL4035_ALS_DATA; 191 else 192 reg = VCNL4035_WHITE_DATA; 193 ret = regmap_read(data->regmap, reg, &raw_data); 194 iio_device_release_direct_mode(indio_dev); 195 if (!ret) { 196 *val = raw_data; 197 ret = IIO_VAL_INT; 198 } 199 } 200 vcnl4035_set_pm_runtime_state(data, false); 201 return ret; 202 case IIO_CHAN_INFO_INT_TIME: 203 *val = 50; 204 if (data->als_it_val) 205 *val = data->als_it_val * 100; 206 return IIO_VAL_INT; 207 case IIO_CHAN_INFO_SCALE: 208 *val = 64; 209 if (!data->als_it_val) 210 *val2 = 1000; 211 else 212 *val2 = data->als_it_val * 2 * 1000; 213 return IIO_VAL_FRACTIONAL; 214 default: 215 return -EINVAL; 216 } 217 } 218 219 static int vcnl4035_write_raw(struct iio_dev *indio_dev, 220 struct iio_chan_spec const *chan, 221 int val, int val2, long mask) 222 { 223 int ret; 224 struct vcnl4035_data *data = iio_priv(indio_dev); 225 226 switch (mask) { 227 case IIO_CHAN_INFO_INT_TIME: 228 if (val <= 0 || val > 800) 229 return -EINVAL; 230 231 ret = vcnl4035_set_pm_runtime_state(data, true); 232 if (ret < 0) 233 return ret; 234 235 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 236 VCNL4035_ALS_IT_MASK, 237 val / 100); 238 if (!ret) 239 data->als_it_val = val / 100; 240 241 vcnl4035_set_pm_runtime_state(data, false); 242 return ret; 243 default: 244 return -EINVAL; 245 } 246 } 247 248 /* No direct ABI for persistence and threshold, so eventing */ 249 static int vcnl4035_read_thresh(struct iio_dev *indio_dev, 250 const struct iio_chan_spec *chan, enum iio_event_type type, 251 enum iio_event_direction dir, enum iio_event_info info, 252 int *val, int *val2) 253 { 254 struct vcnl4035_data *data = iio_priv(indio_dev); 255 256 switch (info) { 257 case IIO_EV_INFO_VALUE: 258 switch (dir) { 259 case IIO_EV_DIR_RISING: 260 *val = data->als_thresh_high; 261 return IIO_VAL_INT; 262 case IIO_EV_DIR_FALLING: 263 *val = data->als_thresh_low; 264 return IIO_VAL_INT; 265 default: 266 return -EINVAL; 267 } 268 break; 269 case IIO_EV_INFO_PERIOD: 270 *val = data->als_persistence; 271 return IIO_VAL_INT; 272 default: 273 return -EINVAL; 274 } 275 276 } 277 278 static int vcnl4035_write_thresh(struct iio_dev *indio_dev, 279 const struct iio_chan_spec *chan, enum iio_event_type type, 280 enum iio_event_direction dir, enum iio_event_info info, int val, 281 int val2) 282 { 283 struct vcnl4035_data *data = iio_priv(indio_dev); 284 int ret; 285 286 switch (info) { 287 case IIO_EV_INFO_VALUE: 288 /* 16 bit threshold range 0 - 65535 */ 289 if (val < 0 || val > 65535) 290 return -EINVAL; 291 if (dir == IIO_EV_DIR_RISING) { 292 if (val < data->als_thresh_low) 293 return -EINVAL; 294 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, 295 val); 296 if (ret) 297 return ret; 298 data->als_thresh_high = val; 299 } else { 300 if (val > data->als_thresh_high) 301 return -EINVAL; 302 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, 303 val); 304 if (ret) 305 return ret; 306 data->als_thresh_low = val; 307 } 308 return ret; 309 case IIO_EV_INFO_PERIOD: 310 /* allow only 1 2 4 8 as persistence value */ 311 if (val < 0 || val > 8 || hweight8(val) != 1) 312 return -EINVAL; 313 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 314 VCNL4035_ALS_PERS_MASK, val); 315 if (!ret) 316 data->als_persistence = val; 317 return ret; 318 default: 319 return -EINVAL; 320 } 321 } 322 323 static IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800"); 324 325 static struct attribute *vcnl4035_attributes[] = { 326 &iio_const_attr_integration_time_available.dev_attr.attr, 327 NULL, 328 }; 329 330 static const struct attribute_group vcnl4035_attribute_group = { 331 .attrs = vcnl4035_attributes, 332 }; 333 334 static const struct iio_info vcnl4035_info = { 335 .read_raw = vcnl4035_read_raw, 336 .write_raw = vcnl4035_write_raw, 337 .read_event_value = vcnl4035_read_thresh, 338 .write_event_value = vcnl4035_write_thresh, 339 .attrs = &vcnl4035_attribute_group, 340 }; 341 342 static const struct iio_event_spec vcnl4035_event_spec[] = { 343 { 344 .type = IIO_EV_TYPE_THRESH, 345 .dir = IIO_EV_DIR_RISING, 346 .mask_separate = BIT(IIO_EV_INFO_VALUE), 347 }, { 348 .type = IIO_EV_TYPE_THRESH, 349 .dir = IIO_EV_DIR_FALLING, 350 .mask_separate = BIT(IIO_EV_INFO_VALUE), 351 }, { 352 .type = IIO_EV_TYPE_THRESH, 353 .dir = IIO_EV_DIR_EITHER, 354 .mask_separate = BIT(IIO_EV_INFO_PERIOD), 355 }, 356 }; 357 358 enum vcnl4035_scan_index_order { 359 VCNL4035_CHAN_INDEX_LIGHT, 360 VCNL4035_CHAN_INDEX_WHITE_LED, 361 }; 362 363 static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = { 364 .validate_scan_mask = &iio_validate_scan_mask_onehot, 365 }; 366 367 static const struct iio_chan_spec vcnl4035_channels[] = { 368 { 369 .type = IIO_LIGHT, 370 .channel = 0, 371 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | 372 BIT(IIO_CHAN_INFO_INT_TIME) | 373 BIT(IIO_CHAN_INFO_SCALE), 374 .event_spec = vcnl4035_event_spec, 375 .num_event_specs = ARRAY_SIZE(vcnl4035_event_spec), 376 .scan_index = VCNL4035_CHAN_INDEX_LIGHT, 377 .scan_type = { 378 .sign = 'u', 379 .realbits = 16, 380 .storagebits = 16, 381 .endianness = IIO_LE, 382 }, 383 }, 384 { 385 .type = IIO_INTENSITY, 386 .channel = 1, 387 .modified = 1, 388 .channel2 = IIO_MOD_LIGHT_BOTH, 389 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 390 .scan_index = VCNL4035_CHAN_INDEX_WHITE_LED, 391 .scan_type = { 392 .sign = 'u', 393 .realbits = 16, 394 .storagebits = 16, 395 .endianness = IIO_LE, 396 }, 397 }, 398 }; 399 400 static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status) 401 { 402 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 403 VCNL4035_MODE_ALS_MASK, 404 status); 405 } 406 407 static int vcnl4035_init(struct vcnl4035_data *data) 408 { 409 int ret; 410 int id; 411 412 ret = regmap_read(data->regmap, VCNL4035_DEV_ID, &id); 413 if (ret < 0) { 414 dev_err(&data->client->dev, "Failed to read DEV_ID register\n"); 415 return ret; 416 } 417 418 id = FIELD_GET(VCNL4035_DEV_ID_MASK, id); 419 if (id != VCNL4035_DEV_ID_VAL) { 420 dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n", 421 id, VCNL4035_DEV_ID_VAL); 422 return -ENODEV; 423 } 424 425 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); 426 if (ret < 0) 427 return ret; 428 429 /* ALS white channel enable */ 430 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 431 VCNL4035_MODE_ALS_WHITE_CHAN, 432 1); 433 if (ret) { 434 dev_err(&data->client->dev, "set white channel enable %d\n", 435 ret); 436 return ret; 437 } 438 439 /* set default integration time - 100 ms for ALS */ 440 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 441 VCNL4035_ALS_IT_MASK, 442 VCNL4035_ALS_IT_DEFAULT); 443 if (ret) { 444 dev_err(&data->client->dev, "set default ALS IT returned %d\n", 445 ret); 446 return ret; 447 } 448 data->als_it_val = VCNL4035_ALS_IT_DEFAULT; 449 450 /* set default persistence time - 1 for ALS */ 451 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, 452 VCNL4035_ALS_PERS_MASK, 453 VCNL4035_ALS_PERS_DEFAULT); 454 if (ret) { 455 dev_err(&data->client->dev, "set default PERS returned %d\n", 456 ret); 457 return ret; 458 } 459 data->als_persistence = VCNL4035_ALS_PERS_DEFAULT; 460 461 /* set default HIGH threshold for ALS */ 462 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, 463 VCNL4035_ALS_THDH_DEFAULT); 464 if (ret) { 465 dev_err(&data->client->dev, "set default THDH returned %d\n", 466 ret); 467 return ret; 468 } 469 data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT; 470 471 /* set default LOW threshold for ALS */ 472 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, 473 VCNL4035_ALS_THDL_DEFAULT); 474 if (ret) { 475 dev_err(&data->client->dev, "set default THDL returned %d\n", 476 ret); 477 return ret; 478 } 479 data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT; 480 481 return 0; 482 } 483 484 static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg) 485 { 486 switch (reg) { 487 case VCNL4035_ALS_CONF: 488 case VCNL4035_DEV_ID: 489 return false; 490 default: 491 return true; 492 } 493 } 494 495 static const struct regmap_config vcnl4035_regmap_config = { 496 .name = VCNL4035_REGMAP_NAME, 497 .reg_bits = 8, 498 .val_bits = 16, 499 .max_register = VCNL4035_DEV_ID, 500 .cache_type = REGCACHE_RBTREE, 501 .volatile_reg = vcnl4035_is_volatile_reg, 502 .val_format_endian = REGMAP_ENDIAN_LITTLE, 503 }; 504 505 static int vcnl4035_probe_trigger(struct iio_dev *indio_dev) 506 { 507 int ret; 508 struct vcnl4035_data *data = iio_priv(indio_dev); 509 510 data->drdy_trigger0 = devm_iio_trigger_alloc( 511 indio_dev->dev.parent, 512 "%s-dev%d", indio_dev->name, iio_device_id(indio_dev)); 513 if (!data->drdy_trigger0) 514 return -ENOMEM; 515 516 data->drdy_trigger0->ops = &vcnl4035_trigger_ops; 517 iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev); 518 ret = devm_iio_trigger_register(indio_dev->dev.parent, 519 data->drdy_trigger0); 520 if (ret) { 521 dev_err(&data->client->dev, "iio trigger register failed\n"); 522 return ret; 523 } 524 525 /* Trigger setup */ 526 ret = devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, 527 NULL, vcnl4035_trigger_consumer_handler, 528 &iio_triggered_buffer_setup_ops); 529 if (ret < 0) { 530 dev_err(&data->client->dev, "iio triggered buffer setup failed\n"); 531 return ret; 532 } 533 534 /* IRQ to trigger mapping */ 535 ret = devm_request_threaded_irq(&data->client->dev, data->client->irq, 536 NULL, vcnl4035_drdy_irq_thread, 537 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 538 VCNL4035_IRQ_NAME, indio_dev); 539 if (ret < 0) 540 dev_err(&data->client->dev, "request irq %d for trigger0 failed\n", 541 data->client->irq); 542 return ret; 543 } 544 545 static int vcnl4035_probe(struct i2c_client *client) 546 { 547 struct vcnl4035_data *data; 548 struct iio_dev *indio_dev; 549 struct regmap *regmap; 550 int ret; 551 552 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 553 if (!indio_dev) 554 return -ENOMEM; 555 556 regmap = devm_regmap_init_i2c(client, &vcnl4035_regmap_config); 557 if (IS_ERR(regmap)) { 558 dev_err(&client->dev, "regmap_init failed!\n"); 559 return PTR_ERR(regmap); 560 } 561 562 data = iio_priv(indio_dev); 563 i2c_set_clientdata(client, indio_dev); 564 data->client = client; 565 data->regmap = regmap; 566 567 indio_dev->info = &vcnl4035_info; 568 indio_dev->name = VCNL4035_DRV_NAME; 569 indio_dev->channels = vcnl4035_channels; 570 indio_dev->num_channels = ARRAY_SIZE(vcnl4035_channels); 571 indio_dev->modes = INDIO_DIRECT_MODE; 572 573 ret = vcnl4035_init(data); 574 if (ret < 0) { 575 dev_err(&client->dev, "vcnl4035 chip init failed\n"); 576 return ret; 577 } 578 579 if (client->irq > 0) { 580 ret = vcnl4035_probe_trigger(indio_dev); 581 if (ret < 0) { 582 dev_err(&client->dev, "vcnl4035 unable init trigger\n"); 583 goto fail_poweroff; 584 } 585 } 586 587 ret = pm_runtime_set_active(&client->dev); 588 if (ret < 0) 589 goto fail_poweroff; 590 591 ret = iio_device_register(indio_dev); 592 if (ret < 0) 593 goto fail_poweroff; 594 595 pm_runtime_enable(&client->dev); 596 pm_runtime_set_autosuspend_delay(&client->dev, VCNL4035_SLEEP_DELAY_MS); 597 pm_runtime_use_autosuspend(&client->dev); 598 599 return 0; 600 601 fail_poweroff: 602 vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); 603 return ret; 604 } 605 606 static void vcnl4035_remove(struct i2c_client *client) 607 { 608 struct iio_dev *indio_dev = i2c_get_clientdata(client); 609 int ret; 610 611 pm_runtime_dont_use_autosuspend(&client->dev); 612 pm_runtime_disable(&client->dev); 613 iio_device_unregister(indio_dev); 614 pm_runtime_set_suspended(&client->dev); 615 616 ret = vcnl4035_set_als_power_state(iio_priv(indio_dev), 617 VCNL4035_MODE_ALS_DISABLE); 618 if (ret) 619 dev_warn(&client->dev, "Failed to put device into standby (%pe)\n", 620 ERR_PTR(ret)); 621 } 622 623 static int 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 } 634 635 static int 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 } 651 652 static DEFINE_RUNTIME_DEV_PM_OPS(vcnl4035_pm_ops, vcnl4035_runtime_suspend, 653 vcnl4035_runtime_resume, NULL); 654 655 static const struct i2c_device_id vcnl4035_id[] = { 656 { "vcnl4035", 0 }, 657 { } 658 }; 659 MODULE_DEVICE_TABLE(i2c, vcnl4035_id); 660 661 static const struct of_device_id vcnl4035_of_match[] = { 662 { .compatible = "vishay,vcnl4035", }, 663 { } 664 }; 665 MODULE_DEVICE_TABLE(of, vcnl4035_of_match); 666 667 static struct i2c_driver vcnl4035_driver = { 668 .driver = { 669 .name = VCNL4035_DRV_NAME, 670 .pm = pm_ptr(&vcnl4035_pm_ops), 671 .of_match_table = vcnl4035_of_match, 672 }, 673 .probe_new = vcnl4035_probe, 674 .remove = vcnl4035_remove, 675 .id_table = vcnl4035_id, 676 }; 677 678 module_i2c_driver(vcnl4035_driver); 679 680 MODULE_AUTHOR("Parthiban Nallathambi <pn@denx.de>"); 681 MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver"); 682 MODULE_LICENSE("GPL v2"); 683