1 /** 2 * Sensortek STK3310/STK3311 Ambient Light and Proximity Sensor 3 * 4 * Copyright (c) 2015, Intel Corporation. 5 * 6 * This file is subject to the terms and conditions of version 2 of 7 * the GNU General Public License. See the file COPYING in the main 8 * directory of this archive for more details. 9 * 10 * IIO driver for STK3310/STK3311. 7-bit I2C address: 0x48. 11 */ 12 13 #include <linux/acpi.h> 14 #include <linux/i2c.h> 15 #include <linux/interrupt.h> 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/regmap.h> 19 #include <linux/gpio/consumer.h> 20 #include <linux/iio/events.h> 21 #include <linux/iio/iio.h> 22 #include <linux/iio/sysfs.h> 23 24 #define STK3310_REG_STATE 0x00 25 #define STK3310_REG_PSCTRL 0x01 26 #define STK3310_REG_ALSCTRL 0x02 27 #define STK3310_REG_INT 0x04 28 #define STK3310_REG_THDH_PS 0x06 29 #define STK3310_REG_THDL_PS 0x08 30 #define STK3310_REG_FLAG 0x10 31 #define STK3310_REG_PS_DATA_MSB 0x11 32 #define STK3310_REG_PS_DATA_LSB 0x12 33 #define STK3310_REG_ALS_DATA_MSB 0x13 34 #define STK3310_REG_ALS_DATA_LSB 0x14 35 #define STK3310_REG_ID 0x3E 36 #define STK3310_MAX_REG 0x80 37 38 #define STK3310_STATE_EN_PS BIT(0) 39 #define STK3310_STATE_EN_ALS BIT(1) 40 #define STK3310_STATE_STANDBY 0x00 41 42 #define STK3310_CHIP_ID_VAL 0x13 43 #define STK3311_CHIP_ID_VAL 0x1D 44 #define STK3310_PSINT_EN 0x01 45 #define STK3310_PS_MAX_VAL 0xFFFF 46 47 #define STK3310_DRIVER_NAME "stk3310" 48 #define STK3310_REGMAP_NAME "stk3310_regmap" 49 #define STK3310_EVENT "stk3310_event" 50 51 #define STK3310_SCALE_AVAILABLE "6.4 1.6 0.4 0.1" 52 53 #define STK3310_IT_AVAILABLE \ 54 "0.000185 0.000370 0.000741 0.001480 0.002960 0.005920 0.011840 " \ 55 "0.023680 0.047360 0.094720 0.189440 0.378880 0.757760 1.515520 " \ 56 "3.031040 6.062080" 57 58 #define STK3310_REGFIELD(name) \ 59 do { \ 60 data->reg_##name = \ 61 devm_regmap_field_alloc(&client->dev, regmap, \ 62 stk3310_reg_field_##name); \ 63 if (IS_ERR(data->reg_##name)) { \ 64 dev_err(&client->dev, "reg field alloc failed.\n"); \ 65 return PTR_ERR(data->reg_##name); \ 66 } \ 67 } while (0) 68 69 static const struct reg_field stk3310_reg_field_state = 70 REG_FIELD(STK3310_REG_STATE, 0, 2); 71 static const struct reg_field stk3310_reg_field_als_gain = 72 REG_FIELD(STK3310_REG_ALSCTRL, 4, 5); 73 static const struct reg_field stk3310_reg_field_ps_gain = 74 REG_FIELD(STK3310_REG_PSCTRL, 4, 5); 75 static const struct reg_field stk3310_reg_field_als_it = 76 REG_FIELD(STK3310_REG_ALSCTRL, 0, 3); 77 static const struct reg_field stk3310_reg_field_ps_it = 78 REG_FIELD(STK3310_REG_PSCTRL, 0, 3); 79 static const struct reg_field stk3310_reg_field_int_ps = 80 REG_FIELD(STK3310_REG_INT, 0, 2); 81 static const struct reg_field stk3310_reg_field_flag_psint = 82 REG_FIELD(STK3310_REG_FLAG, 4, 4); 83 static const struct reg_field stk3310_reg_field_flag_nf = 84 REG_FIELD(STK3310_REG_FLAG, 0, 0); 85 86 /* Estimate maximum proximity values with regard to measurement scale. */ 87 static const int stk3310_ps_max[4] = { 88 STK3310_PS_MAX_VAL / 640, 89 STK3310_PS_MAX_VAL / 160, 90 STK3310_PS_MAX_VAL / 40, 91 STK3310_PS_MAX_VAL / 10 92 }; 93 94 static const int stk3310_scale_table[][2] = { 95 {6, 400000}, {1, 600000}, {0, 400000}, {0, 100000} 96 }; 97 98 /* Integration time in seconds, microseconds */ 99 static const int stk3310_it_table[][2] = { 100 {0, 185}, {0, 370}, {0, 741}, {0, 1480}, 101 {0, 2960}, {0, 5920}, {0, 11840}, {0, 23680}, 102 {0, 47360}, {0, 94720}, {0, 189440}, {0, 378880}, 103 {0, 757760}, {1, 515520}, {3, 31040}, {6, 62080}, 104 }; 105 106 struct stk3310_data { 107 struct i2c_client *client; 108 struct mutex lock; 109 bool als_enabled; 110 bool ps_enabled; 111 u64 timestamp; 112 struct regmap *regmap; 113 struct regmap_field *reg_state; 114 struct regmap_field *reg_als_gain; 115 struct regmap_field *reg_ps_gain; 116 struct regmap_field *reg_als_it; 117 struct regmap_field *reg_ps_it; 118 struct regmap_field *reg_int_ps; 119 struct regmap_field *reg_flag_psint; 120 struct regmap_field *reg_flag_nf; 121 }; 122 123 static const struct iio_event_spec stk3310_events[] = { 124 /* Proximity event */ 125 { 126 .type = IIO_EV_TYPE_THRESH, 127 .dir = IIO_EV_DIR_RISING, 128 .mask_separate = BIT(IIO_EV_INFO_VALUE) | 129 BIT(IIO_EV_INFO_ENABLE), 130 }, 131 /* Out-of-proximity event */ 132 { 133 .type = IIO_EV_TYPE_THRESH, 134 .dir = IIO_EV_DIR_FALLING, 135 .mask_separate = BIT(IIO_EV_INFO_VALUE) | 136 BIT(IIO_EV_INFO_ENABLE), 137 }, 138 }; 139 140 static const struct iio_chan_spec stk3310_channels[] = { 141 { 142 .type = IIO_LIGHT, 143 .info_mask_separate = 144 BIT(IIO_CHAN_INFO_RAW) | 145 BIT(IIO_CHAN_INFO_SCALE) | 146 BIT(IIO_CHAN_INFO_INT_TIME), 147 }, 148 { 149 .type = IIO_PROXIMITY, 150 .info_mask_separate = 151 BIT(IIO_CHAN_INFO_RAW) | 152 BIT(IIO_CHAN_INFO_SCALE) | 153 BIT(IIO_CHAN_INFO_INT_TIME), 154 .event_spec = stk3310_events, 155 .num_event_specs = ARRAY_SIZE(stk3310_events), 156 } 157 }; 158 159 static IIO_CONST_ATTR(in_illuminance_scale_available, STK3310_SCALE_AVAILABLE); 160 161 static IIO_CONST_ATTR(in_proximity_scale_available, STK3310_SCALE_AVAILABLE); 162 163 static IIO_CONST_ATTR(in_illuminance_integration_time_available, 164 STK3310_IT_AVAILABLE); 165 166 static IIO_CONST_ATTR(in_proximity_integration_time_available, 167 STK3310_IT_AVAILABLE); 168 169 static struct attribute *stk3310_attributes[] = { 170 &iio_const_attr_in_illuminance_scale_available.dev_attr.attr, 171 &iio_const_attr_in_proximity_scale_available.dev_attr.attr, 172 &iio_const_attr_in_illuminance_integration_time_available.dev_attr.attr, 173 &iio_const_attr_in_proximity_integration_time_available.dev_attr.attr, 174 NULL, 175 }; 176 177 static const struct attribute_group stk3310_attribute_group = { 178 .attrs = stk3310_attributes 179 }; 180 181 static int stk3310_get_index(const int table[][2], int table_size, 182 int val, int val2) 183 { 184 int i; 185 186 for (i = 0; i < table_size; i++) { 187 if (val == table[i][0] && val2 == table[i][1]) 188 return i; 189 } 190 191 return -EINVAL; 192 } 193 194 static int stk3310_read_event(struct iio_dev *indio_dev, 195 const struct iio_chan_spec *chan, 196 enum iio_event_type type, 197 enum iio_event_direction dir, 198 enum iio_event_info info, 199 int *val, int *val2) 200 { 201 u8 reg; 202 __be16 buf; 203 int ret; 204 struct stk3310_data *data = iio_priv(indio_dev); 205 206 if (info != IIO_EV_INFO_VALUE) 207 return -EINVAL; 208 209 /* Only proximity interrupts are implemented at the moment. */ 210 if (dir == IIO_EV_DIR_RISING) 211 reg = STK3310_REG_THDH_PS; 212 else if (dir == IIO_EV_DIR_FALLING) 213 reg = STK3310_REG_THDL_PS; 214 else 215 return -EINVAL; 216 217 mutex_lock(&data->lock); 218 ret = regmap_bulk_read(data->regmap, reg, &buf, 2); 219 mutex_unlock(&data->lock); 220 if (ret < 0) { 221 dev_err(&data->client->dev, "register read failed\n"); 222 return ret; 223 } 224 *val = be16_to_cpu(buf); 225 226 return IIO_VAL_INT; 227 } 228 229 static int stk3310_write_event(struct iio_dev *indio_dev, 230 const struct iio_chan_spec *chan, 231 enum iio_event_type type, 232 enum iio_event_direction dir, 233 enum iio_event_info info, 234 int val, int val2) 235 { 236 u8 reg; 237 __be16 buf; 238 int ret; 239 unsigned int index; 240 struct stk3310_data *data = iio_priv(indio_dev); 241 struct i2c_client *client = data->client; 242 243 ret = regmap_field_read(data->reg_ps_gain, &index); 244 if (ret < 0) 245 return ret; 246 247 if (val < 0 || val > stk3310_ps_max[index]) 248 return -EINVAL; 249 250 if (dir == IIO_EV_DIR_RISING) 251 reg = STK3310_REG_THDH_PS; 252 else if (dir == IIO_EV_DIR_FALLING) 253 reg = STK3310_REG_THDL_PS; 254 else 255 return -EINVAL; 256 257 buf = cpu_to_be16(val); 258 ret = regmap_bulk_write(data->regmap, reg, &buf, 2); 259 if (ret < 0) 260 dev_err(&client->dev, "failed to set PS threshold!\n"); 261 262 return ret; 263 } 264 265 static int stk3310_read_event_config(struct iio_dev *indio_dev, 266 const struct iio_chan_spec *chan, 267 enum iio_event_type type, 268 enum iio_event_direction dir) 269 { 270 unsigned int event_val; 271 int ret; 272 struct stk3310_data *data = iio_priv(indio_dev); 273 274 ret = regmap_field_read(data->reg_int_ps, &event_val); 275 if (ret < 0) 276 return ret; 277 278 return event_val; 279 } 280 281 static int stk3310_write_event_config(struct iio_dev *indio_dev, 282 const struct iio_chan_spec *chan, 283 enum iio_event_type type, 284 enum iio_event_direction dir, 285 int state) 286 { 287 int ret; 288 struct stk3310_data *data = iio_priv(indio_dev); 289 struct i2c_client *client = data->client; 290 291 if (state < 0 || state > 7) 292 return -EINVAL; 293 294 /* Set INT_PS value */ 295 mutex_lock(&data->lock); 296 ret = regmap_field_write(data->reg_int_ps, state); 297 if (ret < 0) 298 dev_err(&client->dev, "failed to set interrupt mode\n"); 299 mutex_unlock(&data->lock); 300 301 return ret; 302 } 303 304 static int stk3310_read_raw(struct iio_dev *indio_dev, 305 struct iio_chan_spec const *chan, 306 int *val, int *val2, long mask) 307 { 308 u8 reg; 309 __be16 buf; 310 int ret; 311 unsigned int index; 312 struct stk3310_data *data = iio_priv(indio_dev); 313 struct i2c_client *client = data->client; 314 315 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) 316 return -EINVAL; 317 318 switch (mask) { 319 case IIO_CHAN_INFO_RAW: 320 if (chan->type == IIO_LIGHT) 321 reg = STK3310_REG_ALS_DATA_MSB; 322 else 323 reg = STK3310_REG_PS_DATA_MSB; 324 325 mutex_lock(&data->lock); 326 ret = regmap_bulk_read(data->regmap, reg, &buf, 2); 327 if (ret < 0) { 328 dev_err(&client->dev, "register read failed\n"); 329 mutex_unlock(&data->lock); 330 return ret; 331 } 332 *val = be16_to_cpu(buf); 333 mutex_unlock(&data->lock); 334 return IIO_VAL_INT; 335 case IIO_CHAN_INFO_INT_TIME: 336 if (chan->type == IIO_LIGHT) 337 ret = regmap_field_read(data->reg_als_it, &index); 338 else 339 ret = regmap_field_read(data->reg_ps_it, &index); 340 if (ret < 0) 341 return ret; 342 343 *val = stk3310_it_table[index][0]; 344 *val2 = stk3310_it_table[index][1]; 345 return IIO_VAL_INT_PLUS_MICRO; 346 case IIO_CHAN_INFO_SCALE: 347 if (chan->type == IIO_LIGHT) 348 ret = regmap_field_read(data->reg_als_gain, &index); 349 else 350 ret = regmap_field_read(data->reg_ps_gain, &index); 351 if (ret < 0) 352 return ret; 353 354 *val = stk3310_scale_table[index][0]; 355 *val2 = stk3310_scale_table[index][1]; 356 return IIO_VAL_INT_PLUS_MICRO; 357 } 358 359 return -EINVAL; 360 } 361 362 static int stk3310_write_raw(struct iio_dev *indio_dev, 363 struct iio_chan_spec const *chan, 364 int val, int val2, long mask) 365 { 366 int ret; 367 int index; 368 struct stk3310_data *data = iio_priv(indio_dev); 369 370 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) 371 return -EINVAL; 372 373 switch (mask) { 374 case IIO_CHAN_INFO_INT_TIME: 375 index = stk3310_get_index(stk3310_it_table, 376 ARRAY_SIZE(stk3310_it_table), 377 val, val2); 378 if (index < 0) 379 return -EINVAL; 380 mutex_lock(&data->lock); 381 if (chan->type == IIO_LIGHT) 382 ret = regmap_field_write(data->reg_als_it, index); 383 else 384 ret = regmap_field_write(data->reg_ps_it, index); 385 if (ret < 0) 386 dev_err(&data->client->dev, 387 "sensor configuration failed\n"); 388 mutex_unlock(&data->lock); 389 return ret; 390 391 case IIO_CHAN_INFO_SCALE: 392 index = stk3310_get_index(stk3310_scale_table, 393 ARRAY_SIZE(stk3310_scale_table), 394 val, val2); 395 if (index < 0) 396 return -EINVAL; 397 mutex_lock(&data->lock); 398 if (chan->type == IIO_LIGHT) 399 ret = regmap_field_write(data->reg_als_gain, index); 400 else 401 ret = regmap_field_write(data->reg_ps_gain, index); 402 if (ret < 0) 403 dev_err(&data->client->dev, 404 "sensor configuration failed\n"); 405 mutex_unlock(&data->lock); 406 return ret; 407 } 408 409 return -EINVAL; 410 } 411 412 static const struct iio_info stk3310_info = { 413 .driver_module = THIS_MODULE, 414 .read_raw = stk3310_read_raw, 415 .write_raw = stk3310_write_raw, 416 .attrs = &stk3310_attribute_group, 417 .read_event_value = stk3310_read_event, 418 .write_event_value = stk3310_write_event, 419 .read_event_config = stk3310_read_event_config, 420 .write_event_config = stk3310_write_event_config, 421 }; 422 423 static int stk3310_set_state(struct stk3310_data *data, u8 state) 424 { 425 int ret; 426 struct i2c_client *client = data->client; 427 428 /* 3-bit state; 0b100 is not supported. */ 429 if (state > 7 || state == 4) 430 return -EINVAL; 431 432 mutex_lock(&data->lock); 433 ret = regmap_field_write(data->reg_state, state); 434 if (ret < 0) { 435 dev_err(&client->dev, "failed to change sensor state\n"); 436 } else if (state != STK3310_STATE_STANDBY) { 437 /* Don't reset the 'enabled' flags if we're going in standby */ 438 data->ps_enabled = !!(state & STK3310_STATE_EN_PS); 439 data->als_enabled = !!(state & STK3310_STATE_EN_ALS); 440 } 441 mutex_unlock(&data->lock); 442 443 return ret; 444 } 445 446 static int stk3310_init(struct iio_dev *indio_dev) 447 { 448 int ret; 449 int chipid; 450 u8 state; 451 struct stk3310_data *data = iio_priv(indio_dev); 452 struct i2c_client *client = data->client; 453 454 ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid); 455 if (ret < 0) 456 return ret; 457 458 if (chipid != STK3310_CHIP_ID_VAL && 459 chipid != STK3311_CHIP_ID_VAL) { 460 dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid); 461 return -ENODEV; 462 } 463 464 state = STK3310_STATE_EN_ALS | STK3310_STATE_EN_PS; 465 ret = stk3310_set_state(data, state); 466 if (ret < 0) { 467 dev_err(&client->dev, "failed to enable sensor"); 468 return ret; 469 } 470 471 /* Enable PS interrupts */ 472 ret = regmap_field_write(data->reg_int_ps, STK3310_PSINT_EN); 473 if (ret < 0) 474 dev_err(&client->dev, "failed to enable interrupts!\n"); 475 476 return ret; 477 } 478 479 static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg) 480 { 481 switch (reg) { 482 case STK3310_REG_ALS_DATA_MSB: 483 case STK3310_REG_ALS_DATA_LSB: 484 case STK3310_REG_PS_DATA_LSB: 485 case STK3310_REG_PS_DATA_MSB: 486 case STK3310_REG_FLAG: 487 return true; 488 default: 489 return false; 490 } 491 } 492 493 static struct regmap_config stk3310_regmap_config = { 494 .name = STK3310_REGMAP_NAME, 495 .reg_bits = 8, 496 .val_bits = 8, 497 .max_register = STK3310_MAX_REG, 498 .cache_type = REGCACHE_RBTREE, 499 .volatile_reg = stk3310_is_volatile_reg, 500 }; 501 502 static int stk3310_regmap_init(struct stk3310_data *data) 503 { 504 struct regmap *regmap; 505 struct i2c_client *client; 506 507 client = data->client; 508 regmap = devm_regmap_init_i2c(client, &stk3310_regmap_config); 509 if (IS_ERR(regmap)) { 510 dev_err(&client->dev, "regmap initialization failed.\n"); 511 return PTR_ERR(regmap); 512 } 513 data->regmap = regmap; 514 515 STK3310_REGFIELD(state); 516 STK3310_REGFIELD(als_gain); 517 STK3310_REGFIELD(ps_gain); 518 STK3310_REGFIELD(als_it); 519 STK3310_REGFIELD(ps_it); 520 STK3310_REGFIELD(int_ps); 521 STK3310_REGFIELD(flag_psint); 522 STK3310_REGFIELD(flag_nf); 523 524 return 0; 525 } 526 527 static irqreturn_t stk3310_irq_handler(int irq, void *private) 528 { 529 struct iio_dev *indio_dev = private; 530 struct stk3310_data *data = iio_priv(indio_dev); 531 532 data->timestamp = iio_get_time_ns(); 533 534 return IRQ_WAKE_THREAD; 535 } 536 537 static irqreturn_t stk3310_irq_event_handler(int irq, void *private) 538 { 539 int ret; 540 unsigned int dir; 541 u64 event; 542 543 struct iio_dev *indio_dev = private; 544 struct stk3310_data *data = iio_priv(indio_dev); 545 546 /* Read FLAG_NF to figure out what threshold has been met. */ 547 mutex_lock(&data->lock); 548 ret = regmap_field_read(data->reg_flag_nf, &dir); 549 if (ret < 0) { 550 dev_err(&data->client->dev, "register read failed\n"); 551 mutex_unlock(&data->lock); 552 return ret; 553 } 554 event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1, 555 IIO_EV_TYPE_THRESH, 556 (dir ? IIO_EV_DIR_FALLING : 557 IIO_EV_DIR_RISING)); 558 iio_push_event(indio_dev, event, data->timestamp); 559 560 /* Reset the interrupt flag */ 561 ret = regmap_field_write(data->reg_flag_psint, 0); 562 if (ret < 0) 563 dev_err(&data->client->dev, "failed to reset interrupts\n"); 564 mutex_unlock(&data->lock); 565 566 return IRQ_HANDLED; 567 } 568 569 static int stk3310_probe(struct i2c_client *client, 570 const struct i2c_device_id *id) 571 { 572 int ret; 573 struct iio_dev *indio_dev; 574 struct stk3310_data *data; 575 576 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 577 if (!indio_dev) { 578 dev_err(&client->dev, "iio allocation failed!\n"); 579 return -ENOMEM; 580 } 581 582 data = iio_priv(indio_dev); 583 data->client = client; 584 i2c_set_clientdata(client, indio_dev); 585 mutex_init(&data->lock); 586 587 ret = stk3310_regmap_init(data); 588 if (ret < 0) 589 return ret; 590 591 indio_dev->dev.parent = &client->dev; 592 indio_dev->info = &stk3310_info; 593 indio_dev->name = STK3310_DRIVER_NAME; 594 indio_dev->modes = INDIO_DIRECT_MODE; 595 indio_dev->channels = stk3310_channels; 596 indio_dev->num_channels = ARRAY_SIZE(stk3310_channels); 597 598 ret = stk3310_init(indio_dev); 599 if (ret < 0) 600 return ret; 601 602 if (client->irq > 0) { 603 ret = devm_request_threaded_irq(&client->dev, client->irq, 604 stk3310_irq_handler, 605 stk3310_irq_event_handler, 606 IRQF_TRIGGER_FALLING | 607 IRQF_ONESHOT, 608 STK3310_EVENT, indio_dev); 609 if (ret < 0) { 610 dev_err(&client->dev, "request irq %d failed\n", 611 client->irq); 612 goto err_standby; 613 } 614 } 615 616 ret = iio_device_register(indio_dev); 617 if (ret < 0) { 618 dev_err(&client->dev, "device_register failed\n"); 619 goto err_standby; 620 } 621 622 return 0; 623 624 err_standby: 625 stk3310_set_state(data, STK3310_STATE_STANDBY); 626 return ret; 627 } 628 629 static int stk3310_remove(struct i2c_client *client) 630 { 631 struct iio_dev *indio_dev = i2c_get_clientdata(client); 632 633 iio_device_unregister(indio_dev); 634 return stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY); 635 } 636 637 #ifdef CONFIG_PM_SLEEP 638 static int stk3310_suspend(struct device *dev) 639 { 640 struct stk3310_data *data; 641 642 data = iio_priv(i2c_get_clientdata(to_i2c_client(dev))); 643 644 return stk3310_set_state(data, STK3310_STATE_STANDBY); 645 } 646 647 static int stk3310_resume(struct device *dev) 648 { 649 u8 state = 0; 650 struct stk3310_data *data; 651 652 data = iio_priv(i2c_get_clientdata(to_i2c_client(dev))); 653 if (data->ps_enabled) 654 state |= STK3310_STATE_EN_PS; 655 if (data->als_enabled) 656 state |= STK3310_STATE_EN_ALS; 657 658 return stk3310_set_state(data, state); 659 } 660 661 static SIMPLE_DEV_PM_OPS(stk3310_pm_ops, stk3310_suspend, stk3310_resume); 662 663 #define STK3310_PM_OPS (&stk3310_pm_ops) 664 #else 665 #define STK3310_PM_OPS NULL 666 #endif 667 668 static const struct i2c_device_id stk3310_i2c_id[] = { 669 {"STK3310", 0}, 670 {"STK3311", 0}, 671 {} 672 }; 673 MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id); 674 675 static const struct acpi_device_id stk3310_acpi_id[] = { 676 {"STK3310", 0}, 677 {"STK3311", 0}, 678 {} 679 }; 680 681 MODULE_DEVICE_TABLE(acpi, stk3310_acpi_id); 682 683 static struct i2c_driver stk3310_driver = { 684 .driver = { 685 .name = "stk3310", 686 .pm = STK3310_PM_OPS, 687 .acpi_match_table = ACPI_PTR(stk3310_acpi_id), 688 }, 689 .probe = stk3310_probe, 690 .remove = stk3310_remove, 691 .id_table = stk3310_i2c_id, 692 }; 693 694 module_i2c_driver(stk3310_driver); 695 696 MODULE_AUTHOR("Tiberiu Breana <tiberiu.a.breana@intel.com>"); 697 MODULE_DESCRIPTION("STK3310 Ambient Light and Proximity Sensor driver"); 698 MODULE_LICENSE("GPL v2"); 699