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