1 // SPDX-License-Identifier: GPL-2.0-only 2 /** 3 * Sensortek STK3310/STK3311 Ambient Light and Proximity Sensor 4 * 5 * Copyright (c) 2015, Intel Corporation. 6 * 7 * IIO driver for STK3310/STK3311. 7-bit I2C address: 0x48. 8 */ 9 10 #include <linux/acpi.h> 11 #include <linux/i2c.h> 12 #include <linux/interrupt.h> 13 #include <linux/kernel.h> 14 #include <linux/module.h> 15 #include <linux/regmap.h> 16 #include <linux/iio/events.h> 17 #include <linux/iio/iio.h> 18 #include <linux/iio/sysfs.h> 19 20 #define STK3310_REG_STATE 0x00 21 #define STK3310_REG_PSCTRL 0x01 22 #define STK3310_REG_ALSCTRL 0x02 23 #define STK3310_REG_INT 0x04 24 #define STK3310_REG_THDH_PS 0x06 25 #define STK3310_REG_THDL_PS 0x08 26 #define STK3310_REG_FLAG 0x10 27 #define STK3310_REG_PS_DATA_MSB 0x11 28 #define STK3310_REG_PS_DATA_LSB 0x12 29 #define STK3310_REG_ALS_DATA_MSB 0x13 30 #define STK3310_REG_ALS_DATA_LSB 0x14 31 #define STK3310_REG_ID 0x3E 32 #define STK3310_MAX_REG 0x80 33 34 #define STK3310_STATE_EN_PS BIT(0) 35 #define STK3310_STATE_EN_ALS BIT(1) 36 #define STK3310_STATE_STANDBY 0x00 37 38 #define STK3310_CHIP_ID_VAL 0x13 39 #define STK3311_CHIP_ID_VAL 0x1D 40 #define STK3335_CHIP_ID_VAL 0x51 41 #define STK3310_PSINT_EN 0x01 42 #define STK3310_PS_MAX_VAL 0xFFFF 43 44 #define STK3310_DRIVER_NAME "stk3310" 45 #define STK3310_REGMAP_NAME "stk3310_regmap" 46 #define STK3310_EVENT "stk3310_event" 47 48 #define STK3310_SCALE_AVAILABLE "6.4 1.6 0.4 0.1" 49 50 #define STK3310_IT_AVAILABLE \ 51 "0.000185 0.000370 0.000741 0.001480 0.002960 0.005920 0.011840 " \ 52 "0.023680 0.047360 0.094720 0.189440 0.378880 0.757760 1.515520 " \ 53 "3.031040 6.062080" 54 55 #define STK3310_REGFIELD(name) \ 56 do { \ 57 data->reg_##name = \ 58 devm_regmap_field_alloc(&client->dev, regmap, \ 59 stk3310_reg_field_##name); \ 60 if (IS_ERR(data->reg_##name)) { \ 61 dev_err(&client->dev, "reg field alloc failed.\n"); \ 62 return PTR_ERR(data->reg_##name); \ 63 } \ 64 } while (0) 65 66 static const struct reg_field stk3310_reg_field_state = 67 REG_FIELD(STK3310_REG_STATE, 0, 2); 68 static const struct reg_field stk3310_reg_field_als_gain = 69 REG_FIELD(STK3310_REG_ALSCTRL, 4, 5); 70 static const struct reg_field stk3310_reg_field_ps_gain = 71 REG_FIELD(STK3310_REG_PSCTRL, 4, 5); 72 static const struct reg_field stk3310_reg_field_als_it = 73 REG_FIELD(STK3310_REG_ALSCTRL, 0, 3); 74 static const struct reg_field stk3310_reg_field_ps_it = 75 REG_FIELD(STK3310_REG_PSCTRL, 0, 3); 76 static const struct reg_field stk3310_reg_field_int_ps = 77 REG_FIELD(STK3310_REG_INT, 0, 2); 78 static const struct reg_field stk3310_reg_field_flag_psint = 79 REG_FIELD(STK3310_REG_FLAG, 4, 4); 80 static const struct reg_field stk3310_reg_field_flag_nf = 81 REG_FIELD(STK3310_REG_FLAG, 0, 0); 82 83 /* Estimate maximum proximity values with regard to measurement scale. */ 84 static const int stk3310_ps_max[4] = { 85 STK3310_PS_MAX_VAL / 640, 86 STK3310_PS_MAX_VAL / 160, 87 STK3310_PS_MAX_VAL / 40, 88 STK3310_PS_MAX_VAL / 10 89 }; 90 91 static const int stk3310_scale_table[][2] = { 92 {6, 400000}, {1, 600000}, {0, 400000}, {0, 100000} 93 }; 94 95 /* Integration time in seconds, microseconds */ 96 static const int stk3310_it_table[][2] = { 97 {0, 185}, {0, 370}, {0, 741}, {0, 1480}, 98 {0, 2960}, {0, 5920}, {0, 11840}, {0, 23680}, 99 {0, 47360}, {0, 94720}, {0, 189440}, {0, 378880}, 100 {0, 757760}, {1, 515520}, {3, 31040}, {6, 62080}, 101 }; 102 103 struct stk3310_data { 104 struct i2c_client *client; 105 struct mutex lock; 106 bool als_enabled; 107 bool ps_enabled; 108 u64 timestamp; 109 struct regmap *regmap; 110 struct regmap_field *reg_state; 111 struct regmap_field *reg_als_gain; 112 struct regmap_field *reg_ps_gain; 113 struct regmap_field *reg_als_it; 114 struct regmap_field *reg_ps_it; 115 struct regmap_field *reg_int_ps; 116 struct regmap_field *reg_flag_psint; 117 struct regmap_field *reg_flag_nf; 118 }; 119 120 static const struct iio_event_spec stk3310_events[] = { 121 /* Proximity event */ 122 { 123 .type = IIO_EV_TYPE_THRESH, 124 .dir = IIO_EV_DIR_RISING, 125 .mask_separate = BIT(IIO_EV_INFO_VALUE) | 126 BIT(IIO_EV_INFO_ENABLE), 127 }, 128 /* Out-of-proximity event */ 129 { 130 .type = IIO_EV_TYPE_THRESH, 131 .dir = IIO_EV_DIR_FALLING, 132 .mask_separate = BIT(IIO_EV_INFO_VALUE) | 133 BIT(IIO_EV_INFO_ENABLE), 134 }, 135 }; 136 137 static const struct iio_chan_spec stk3310_channels[] = { 138 { 139 .type = IIO_LIGHT, 140 .info_mask_separate = 141 BIT(IIO_CHAN_INFO_RAW) | 142 BIT(IIO_CHAN_INFO_SCALE) | 143 BIT(IIO_CHAN_INFO_INT_TIME), 144 }, 145 { 146 .type = IIO_PROXIMITY, 147 .info_mask_separate = 148 BIT(IIO_CHAN_INFO_RAW) | 149 BIT(IIO_CHAN_INFO_SCALE) | 150 BIT(IIO_CHAN_INFO_INT_TIME), 151 .event_spec = stk3310_events, 152 .num_event_specs = ARRAY_SIZE(stk3310_events), 153 } 154 }; 155 156 static IIO_CONST_ATTR(in_illuminance_scale_available, STK3310_SCALE_AVAILABLE); 157 158 static IIO_CONST_ATTR(in_proximity_scale_available, STK3310_SCALE_AVAILABLE); 159 160 static IIO_CONST_ATTR(in_illuminance_integration_time_available, 161 STK3310_IT_AVAILABLE); 162 163 static IIO_CONST_ATTR(in_proximity_integration_time_available, 164 STK3310_IT_AVAILABLE); 165 166 static struct attribute *stk3310_attributes[] = { 167 &iio_const_attr_in_illuminance_scale_available.dev_attr.attr, 168 &iio_const_attr_in_proximity_scale_available.dev_attr.attr, 169 &iio_const_attr_in_illuminance_integration_time_available.dev_attr.attr, 170 &iio_const_attr_in_proximity_integration_time_available.dev_attr.attr, 171 NULL, 172 }; 173 174 static const struct attribute_group stk3310_attribute_group = { 175 .attrs = stk3310_attributes 176 }; 177 178 static int stk3310_get_index(const int table[][2], int table_size, 179 int val, int val2) 180 { 181 int i; 182 183 for (i = 0; i < table_size; i++) { 184 if (val == table[i][0] && val2 == table[i][1]) 185 return i; 186 } 187 188 return -EINVAL; 189 } 190 191 static int stk3310_read_event(struct iio_dev *indio_dev, 192 const struct iio_chan_spec *chan, 193 enum iio_event_type type, 194 enum iio_event_direction dir, 195 enum iio_event_info info, 196 int *val, int *val2) 197 { 198 u8 reg; 199 __be16 buf; 200 int ret; 201 struct stk3310_data *data = iio_priv(indio_dev); 202 203 if (info != IIO_EV_INFO_VALUE) 204 return -EINVAL; 205 206 /* Only proximity interrupts are implemented at the moment. */ 207 if (dir == IIO_EV_DIR_RISING) 208 reg = STK3310_REG_THDH_PS; 209 else if (dir == IIO_EV_DIR_FALLING) 210 reg = STK3310_REG_THDL_PS; 211 else 212 return -EINVAL; 213 214 mutex_lock(&data->lock); 215 ret = regmap_bulk_read(data->regmap, reg, &buf, 2); 216 mutex_unlock(&data->lock); 217 if (ret < 0) { 218 dev_err(&data->client->dev, "register read failed\n"); 219 return ret; 220 } 221 *val = be16_to_cpu(buf); 222 223 return IIO_VAL_INT; 224 } 225 226 static int stk3310_write_event(struct iio_dev *indio_dev, 227 const struct iio_chan_spec *chan, 228 enum iio_event_type type, 229 enum iio_event_direction dir, 230 enum iio_event_info info, 231 int val, int val2) 232 { 233 u8 reg; 234 __be16 buf; 235 int ret; 236 unsigned int index; 237 struct stk3310_data *data = iio_priv(indio_dev); 238 struct i2c_client *client = data->client; 239 240 ret = regmap_field_read(data->reg_ps_gain, &index); 241 if (ret < 0) 242 return ret; 243 244 if (val < 0 || val > stk3310_ps_max[index]) 245 return -EINVAL; 246 247 if (dir == IIO_EV_DIR_RISING) 248 reg = STK3310_REG_THDH_PS; 249 else if (dir == IIO_EV_DIR_FALLING) 250 reg = STK3310_REG_THDL_PS; 251 else 252 return -EINVAL; 253 254 buf = cpu_to_be16(val); 255 ret = regmap_bulk_write(data->regmap, reg, &buf, 2); 256 if (ret < 0) 257 dev_err(&client->dev, "failed to set PS threshold!\n"); 258 259 return ret; 260 } 261 262 static int stk3310_read_event_config(struct iio_dev *indio_dev, 263 const struct iio_chan_spec *chan, 264 enum iio_event_type type, 265 enum iio_event_direction dir) 266 { 267 unsigned int event_val; 268 int ret; 269 struct stk3310_data *data = iio_priv(indio_dev); 270 271 ret = regmap_field_read(data->reg_int_ps, &event_val); 272 if (ret < 0) 273 return ret; 274 275 return event_val; 276 } 277 278 static int stk3310_write_event_config(struct iio_dev *indio_dev, 279 const struct iio_chan_spec *chan, 280 enum iio_event_type type, 281 enum iio_event_direction dir, 282 int state) 283 { 284 int ret; 285 struct stk3310_data *data = iio_priv(indio_dev); 286 struct i2c_client *client = data->client; 287 288 if (state < 0 || state > 7) 289 return -EINVAL; 290 291 /* Set INT_PS value */ 292 mutex_lock(&data->lock); 293 ret = regmap_field_write(data->reg_int_ps, state); 294 if (ret < 0) 295 dev_err(&client->dev, "failed to set interrupt mode\n"); 296 mutex_unlock(&data->lock); 297 298 return ret; 299 } 300 301 static int stk3310_read_raw(struct iio_dev *indio_dev, 302 struct iio_chan_spec const *chan, 303 int *val, int *val2, long mask) 304 { 305 u8 reg; 306 __be16 buf; 307 int ret; 308 unsigned int index; 309 struct stk3310_data *data = iio_priv(indio_dev); 310 struct i2c_client *client = data->client; 311 312 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) 313 return -EINVAL; 314 315 switch (mask) { 316 case IIO_CHAN_INFO_RAW: 317 if (chan->type == IIO_LIGHT) 318 reg = STK3310_REG_ALS_DATA_MSB; 319 else 320 reg = STK3310_REG_PS_DATA_MSB; 321 322 mutex_lock(&data->lock); 323 ret = regmap_bulk_read(data->regmap, reg, &buf, 2); 324 if (ret < 0) { 325 dev_err(&client->dev, "register read failed\n"); 326 mutex_unlock(&data->lock); 327 return ret; 328 } 329 *val = be16_to_cpu(buf); 330 mutex_unlock(&data->lock); 331 return IIO_VAL_INT; 332 case IIO_CHAN_INFO_INT_TIME: 333 if (chan->type == IIO_LIGHT) 334 ret = regmap_field_read(data->reg_als_it, &index); 335 else 336 ret = regmap_field_read(data->reg_ps_it, &index); 337 if (ret < 0) 338 return ret; 339 340 *val = stk3310_it_table[index][0]; 341 *val2 = stk3310_it_table[index][1]; 342 return IIO_VAL_INT_PLUS_MICRO; 343 case IIO_CHAN_INFO_SCALE: 344 if (chan->type == IIO_LIGHT) 345 ret = regmap_field_read(data->reg_als_gain, &index); 346 else 347 ret = regmap_field_read(data->reg_ps_gain, &index); 348 if (ret < 0) 349 return ret; 350 351 *val = stk3310_scale_table[index][0]; 352 *val2 = stk3310_scale_table[index][1]; 353 return IIO_VAL_INT_PLUS_MICRO; 354 } 355 356 return -EINVAL; 357 } 358 359 static int stk3310_write_raw(struct iio_dev *indio_dev, 360 struct iio_chan_spec const *chan, 361 int val, int val2, long mask) 362 { 363 int ret; 364 int index; 365 struct stk3310_data *data = iio_priv(indio_dev); 366 367 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) 368 return -EINVAL; 369 370 switch (mask) { 371 case IIO_CHAN_INFO_INT_TIME: 372 index = stk3310_get_index(stk3310_it_table, 373 ARRAY_SIZE(stk3310_it_table), 374 val, val2); 375 if (index < 0) 376 return -EINVAL; 377 mutex_lock(&data->lock); 378 if (chan->type == IIO_LIGHT) 379 ret = regmap_field_write(data->reg_als_it, index); 380 else 381 ret = regmap_field_write(data->reg_ps_it, index); 382 if (ret < 0) 383 dev_err(&data->client->dev, 384 "sensor configuration failed\n"); 385 mutex_unlock(&data->lock); 386 return ret; 387 388 case IIO_CHAN_INFO_SCALE: 389 index = stk3310_get_index(stk3310_scale_table, 390 ARRAY_SIZE(stk3310_scale_table), 391 val, val2); 392 if (index < 0) 393 return -EINVAL; 394 mutex_lock(&data->lock); 395 if (chan->type == IIO_LIGHT) 396 ret = regmap_field_write(data->reg_als_gain, index); 397 else 398 ret = regmap_field_write(data->reg_ps_gain, index); 399 if (ret < 0) 400 dev_err(&data->client->dev, 401 "sensor configuration failed\n"); 402 mutex_unlock(&data->lock); 403 return ret; 404 } 405 406 return -EINVAL; 407 } 408 409 static const struct iio_info stk3310_info = { 410 .read_raw = stk3310_read_raw, 411 .write_raw = stk3310_write_raw, 412 .attrs = &stk3310_attribute_group, 413 .read_event_value = stk3310_read_event, 414 .write_event_value = stk3310_write_event, 415 .read_event_config = stk3310_read_event_config, 416 .write_event_config = stk3310_write_event_config, 417 }; 418 419 static int stk3310_set_state(struct stk3310_data *data, u8 state) 420 { 421 int ret; 422 struct i2c_client *client = data->client; 423 424 /* 3-bit state; 0b100 is not supported. */ 425 if (state > 7 || state == 4) 426 return -EINVAL; 427 428 mutex_lock(&data->lock); 429 ret = regmap_field_write(data->reg_state, state); 430 if (ret < 0) { 431 dev_err(&client->dev, "failed to change sensor state\n"); 432 } else if (state != STK3310_STATE_STANDBY) { 433 /* Don't reset the 'enabled' flags if we're going in standby */ 434 data->ps_enabled = !!(state & STK3310_STATE_EN_PS); 435 data->als_enabled = !!(state & STK3310_STATE_EN_ALS); 436 } 437 mutex_unlock(&data->lock); 438 439 return ret; 440 } 441 442 static int stk3310_init(struct iio_dev *indio_dev) 443 { 444 int ret; 445 int chipid; 446 u8 state; 447 struct stk3310_data *data = iio_priv(indio_dev); 448 struct i2c_client *client = data->client; 449 450 ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid); 451 if (ret < 0) 452 return ret; 453 454 if (chipid != STK3310_CHIP_ID_VAL && 455 chipid != STK3311_CHIP_ID_VAL && 456 chipid != STK3335_CHIP_ID_VAL) { 457 dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid); 458 return -ENODEV; 459 } 460 461 state = STK3310_STATE_EN_ALS | STK3310_STATE_EN_PS; 462 ret = stk3310_set_state(data, state); 463 if (ret < 0) { 464 dev_err(&client->dev, "failed to enable sensor"); 465 return ret; 466 } 467 468 /* Enable PS interrupts */ 469 ret = regmap_field_write(data->reg_int_ps, STK3310_PSINT_EN); 470 if (ret < 0) 471 dev_err(&client->dev, "failed to enable interrupts!\n"); 472 473 return ret; 474 } 475 476 static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg) 477 { 478 switch (reg) { 479 case STK3310_REG_ALS_DATA_MSB: 480 case STK3310_REG_ALS_DATA_LSB: 481 case STK3310_REG_PS_DATA_LSB: 482 case STK3310_REG_PS_DATA_MSB: 483 case STK3310_REG_FLAG: 484 return true; 485 default: 486 return false; 487 } 488 } 489 490 static struct regmap_config stk3310_regmap_config = { 491 .name = STK3310_REGMAP_NAME, 492 .reg_bits = 8, 493 .val_bits = 8, 494 .max_register = STK3310_MAX_REG, 495 .cache_type = REGCACHE_RBTREE, 496 .volatile_reg = stk3310_is_volatile_reg, 497 }; 498 499 static int stk3310_regmap_init(struct stk3310_data *data) 500 { 501 struct regmap *regmap; 502 struct i2c_client *client; 503 504 client = data->client; 505 regmap = devm_regmap_init_i2c(client, &stk3310_regmap_config); 506 if (IS_ERR(regmap)) { 507 dev_err(&client->dev, "regmap initialization failed.\n"); 508 return PTR_ERR(regmap); 509 } 510 data->regmap = regmap; 511 512 STK3310_REGFIELD(state); 513 STK3310_REGFIELD(als_gain); 514 STK3310_REGFIELD(ps_gain); 515 STK3310_REGFIELD(als_it); 516 STK3310_REGFIELD(ps_it); 517 STK3310_REGFIELD(int_ps); 518 STK3310_REGFIELD(flag_psint); 519 STK3310_REGFIELD(flag_nf); 520 521 return 0; 522 } 523 524 static irqreturn_t stk3310_irq_handler(int irq, void *private) 525 { 526 struct iio_dev *indio_dev = private; 527 struct stk3310_data *data = iio_priv(indio_dev); 528 529 data->timestamp = iio_get_time_ns(indio_dev); 530 531 return IRQ_WAKE_THREAD; 532 } 533 534 static irqreturn_t stk3310_irq_event_handler(int irq, void *private) 535 { 536 int ret; 537 unsigned int dir; 538 u64 event; 539 540 struct iio_dev *indio_dev = private; 541 struct stk3310_data *data = iio_priv(indio_dev); 542 543 /* Read FLAG_NF to figure out what threshold has been met. */ 544 mutex_lock(&data->lock); 545 ret = regmap_field_read(data->reg_flag_nf, &dir); 546 if (ret < 0) { 547 dev_err(&data->client->dev, "register read failed\n"); 548 mutex_unlock(&data->lock); 549 return ret; 550 } 551 event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1, 552 IIO_EV_TYPE_THRESH, 553 (dir ? IIO_EV_DIR_FALLING : 554 IIO_EV_DIR_RISING)); 555 iio_push_event(indio_dev, event, data->timestamp); 556 557 /* Reset the interrupt flag */ 558 ret = regmap_field_write(data->reg_flag_psint, 0); 559 if (ret < 0) 560 dev_err(&data->client->dev, "failed to reset interrupts\n"); 561 mutex_unlock(&data->lock); 562 563 return IRQ_HANDLED; 564 } 565 566 static int stk3310_probe(struct i2c_client *client, 567 const struct i2c_device_id *id) 568 { 569 int ret; 570 struct iio_dev *indio_dev; 571 struct stk3310_data *data; 572 573 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 574 if (!indio_dev) { 575 dev_err(&client->dev, "iio allocation failed!\n"); 576 return -ENOMEM; 577 } 578 579 data = iio_priv(indio_dev); 580 data->client = client; 581 i2c_set_clientdata(client, indio_dev); 582 mutex_init(&data->lock); 583 584 ret = stk3310_regmap_init(data); 585 if (ret < 0) 586 return ret; 587 588 indio_dev->dev.parent = &client->dev; 589 indio_dev->info = &stk3310_info; 590 indio_dev->name = STK3310_DRIVER_NAME; 591 indio_dev->modes = INDIO_DIRECT_MODE; 592 indio_dev->channels = stk3310_channels; 593 indio_dev->num_channels = ARRAY_SIZE(stk3310_channels); 594 595 ret = stk3310_init(indio_dev); 596 if (ret < 0) 597 return ret; 598 599 if (client->irq > 0) { 600 ret = devm_request_threaded_irq(&client->dev, client->irq, 601 stk3310_irq_handler, 602 stk3310_irq_event_handler, 603 IRQF_TRIGGER_FALLING | 604 IRQF_ONESHOT, 605 STK3310_EVENT, indio_dev); 606 if (ret < 0) { 607 dev_err(&client->dev, "request irq %d failed\n", 608 client->irq); 609 goto err_standby; 610 } 611 } 612 613 ret = iio_device_register(indio_dev); 614 if (ret < 0) { 615 dev_err(&client->dev, "device_register failed\n"); 616 goto err_standby; 617 } 618 619 return 0; 620 621 err_standby: 622 stk3310_set_state(data, STK3310_STATE_STANDBY); 623 return ret; 624 } 625 626 static int stk3310_remove(struct i2c_client *client) 627 { 628 struct iio_dev *indio_dev = i2c_get_clientdata(client); 629 630 iio_device_unregister(indio_dev); 631 return stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY); 632 } 633 634 #ifdef CONFIG_PM_SLEEP 635 static int stk3310_suspend(struct device *dev) 636 { 637 struct stk3310_data *data; 638 639 data = iio_priv(i2c_get_clientdata(to_i2c_client(dev))); 640 641 return stk3310_set_state(data, STK3310_STATE_STANDBY); 642 } 643 644 static int stk3310_resume(struct device *dev) 645 { 646 u8 state = 0; 647 struct stk3310_data *data; 648 649 data = iio_priv(i2c_get_clientdata(to_i2c_client(dev))); 650 if (data->ps_enabled) 651 state |= STK3310_STATE_EN_PS; 652 if (data->als_enabled) 653 state |= STK3310_STATE_EN_ALS; 654 655 return stk3310_set_state(data, state); 656 } 657 658 static SIMPLE_DEV_PM_OPS(stk3310_pm_ops, stk3310_suspend, stk3310_resume); 659 660 #define STK3310_PM_OPS (&stk3310_pm_ops) 661 #else 662 #define STK3310_PM_OPS NULL 663 #endif 664 665 static const struct i2c_device_id stk3310_i2c_id[] = { 666 {"STK3310", 0}, 667 {"STK3311", 0}, 668 {"STK3335", 0}, 669 {} 670 }; 671 MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id); 672 673 static const struct acpi_device_id stk3310_acpi_id[] = { 674 {"STK3310", 0}, 675 {"STK3311", 0}, 676 {"STK3335", 0}, 677 {} 678 }; 679 680 MODULE_DEVICE_TABLE(acpi, stk3310_acpi_id); 681 682 static struct i2c_driver stk3310_driver = { 683 .driver = { 684 .name = "stk3310", 685 .pm = STK3310_PM_OPS, 686 .acpi_match_table = ACPI_PTR(stk3310_acpi_id), 687 }, 688 .probe = stk3310_probe, 689 .remove = stk3310_remove, 690 .id_table = stk3310_i2c_id, 691 }; 692 693 module_i2c_driver(stk3310_driver); 694 695 MODULE_AUTHOR("Tiberiu Breana <tiberiu.a.breana@intel.com>"); 696 MODULE_DESCRIPTION("STK3310 Ambient Light and Proximity Sensor driver"); 697 MODULE_LICENSE("GPL v2"); 698