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 STK3311X_CHIP_ID_VAL 0x12 41 #define STK3335_CHIP_ID_VAL 0x51 42 #define STK3310_PSINT_EN 0x01 43 #define STK3310_PS_MAX_VAL 0xFFFF 44 45 #define STK3310_DRIVER_NAME "stk3310" 46 #define STK3310_REGMAP_NAME "stk3310_regmap" 47 #define STK3310_EVENT "stk3310_event" 48 49 #define STK3310_SCALE_AVAILABLE "6.4 1.6 0.4 0.1" 50 51 #define STK3310_IT_AVAILABLE \ 52 "0.000185 0.000370 0.000741 0.001480 0.002960 0.005920 0.011840 " \ 53 "0.023680 0.047360 0.094720 0.189440 0.378880 0.757760 1.515520 " \ 54 "3.031040 6.062080" 55 56 #define STK3310_REGFIELD(name) \ 57 do { \ 58 data->reg_##name = \ 59 devm_regmap_field_alloc(&client->dev, regmap, \ 60 stk3310_reg_field_##name); \ 61 if (IS_ERR(data->reg_##name)) { \ 62 dev_err(&client->dev, "reg field alloc failed.\n"); \ 63 return PTR_ERR(data->reg_##name); \ 64 } \ 65 } while (0) 66 67 static const struct reg_field stk3310_reg_field_state = 68 REG_FIELD(STK3310_REG_STATE, 0, 2); 69 static const struct reg_field stk3310_reg_field_als_gain = 70 REG_FIELD(STK3310_REG_ALSCTRL, 4, 5); 71 static const struct reg_field stk3310_reg_field_ps_gain = 72 REG_FIELD(STK3310_REG_PSCTRL, 4, 5); 73 static const struct reg_field stk3310_reg_field_als_it = 74 REG_FIELD(STK3310_REG_ALSCTRL, 0, 3); 75 static const struct reg_field stk3310_reg_field_ps_it = 76 REG_FIELD(STK3310_REG_PSCTRL, 0, 3); 77 static const struct reg_field stk3310_reg_field_int_ps = 78 REG_FIELD(STK3310_REG_INT, 0, 2); 79 static const struct reg_field stk3310_reg_field_flag_psint = 80 REG_FIELD(STK3310_REG_FLAG, 4, 4); 81 static const struct reg_field stk3310_reg_field_flag_nf = 82 REG_FIELD(STK3310_REG_FLAG, 0, 0); 83 84 /* Estimate maximum proximity values with regard to measurement scale. */ 85 static const int stk3310_ps_max[4] = { 86 STK3310_PS_MAX_VAL / 640, 87 STK3310_PS_MAX_VAL / 160, 88 STK3310_PS_MAX_VAL / 40, 89 STK3310_PS_MAX_VAL / 10 90 }; 91 92 static const int stk3310_scale_table[][2] = { 93 {6, 400000}, {1, 600000}, {0, 400000}, {0, 100000} 94 }; 95 96 /* Integration time in seconds, microseconds */ 97 static const int stk3310_it_table[][2] = { 98 {0, 185}, {0, 370}, {0, 741}, {0, 1480}, 99 {0, 2960}, {0, 5920}, {0, 11840}, {0, 23680}, 100 {0, 47360}, {0, 94720}, {0, 189440}, {0, 378880}, 101 {0, 757760}, {1, 515520}, {3, 31040}, {6, 62080}, 102 }; 103 104 struct stk3310_data { 105 struct i2c_client *client; 106 struct mutex lock; 107 bool als_enabled; 108 bool ps_enabled; 109 u64 timestamp; 110 struct regmap *regmap; 111 struct regmap_field *reg_state; 112 struct regmap_field *reg_als_gain; 113 struct regmap_field *reg_ps_gain; 114 struct regmap_field *reg_als_it; 115 struct regmap_field *reg_ps_it; 116 struct regmap_field *reg_int_ps; 117 struct regmap_field *reg_flag_psint; 118 struct regmap_field *reg_flag_nf; 119 }; 120 121 static const struct iio_event_spec stk3310_events[] = { 122 /* Proximity event */ 123 { 124 .type = IIO_EV_TYPE_THRESH, 125 .dir = IIO_EV_DIR_RISING, 126 .mask_separate = BIT(IIO_EV_INFO_VALUE) | 127 BIT(IIO_EV_INFO_ENABLE), 128 }, 129 /* Out-of-proximity event */ 130 { 131 .type = IIO_EV_TYPE_THRESH, 132 .dir = IIO_EV_DIR_FALLING, 133 .mask_separate = BIT(IIO_EV_INFO_VALUE) | 134 BIT(IIO_EV_INFO_ENABLE), 135 }, 136 }; 137 138 static const struct iio_chan_spec stk3310_channels[] = { 139 { 140 .type = IIO_LIGHT, 141 .info_mask_separate = 142 BIT(IIO_CHAN_INFO_RAW) | 143 BIT(IIO_CHAN_INFO_SCALE) | 144 BIT(IIO_CHAN_INFO_INT_TIME), 145 }, 146 { 147 .type = IIO_PROXIMITY, 148 .info_mask_separate = 149 BIT(IIO_CHAN_INFO_RAW) | 150 BIT(IIO_CHAN_INFO_SCALE) | 151 BIT(IIO_CHAN_INFO_INT_TIME), 152 .event_spec = stk3310_events, 153 .num_event_specs = ARRAY_SIZE(stk3310_events), 154 } 155 }; 156 157 static IIO_CONST_ATTR(in_illuminance_scale_available, STK3310_SCALE_AVAILABLE); 158 159 static IIO_CONST_ATTR(in_proximity_scale_available, STK3310_SCALE_AVAILABLE); 160 161 static IIO_CONST_ATTR(in_illuminance_integration_time_available, 162 STK3310_IT_AVAILABLE); 163 164 static IIO_CONST_ATTR(in_proximity_integration_time_available, 165 STK3310_IT_AVAILABLE); 166 167 static struct attribute *stk3310_attributes[] = { 168 &iio_const_attr_in_illuminance_scale_available.dev_attr.attr, 169 &iio_const_attr_in_proximity_scale_available.dev_attr.attr, 170 &iio_const_attr_in_illuminance_integration_time_available.dev_attr.attr, 171 &iio_const_attr_in_proximity_integration_time_available.dev_attr.attr, 172 NULL, 173 }; 174 175 static const struct attribute_group stk3310_attribute_group = { 176 .attrs = stk3310_attributes 177 }; 178 179 static int stk3310_get_index(const int table[][2], int table_size, 180 int val, int val2) 181 { 182 int i; 183 184 for (i = 0; i < table_size; i++) { 185 if (val == table[i][0] && val2 == table[i][1]) 186 return i; 187 } 188 189 return -EINVAL; 190 } 191 192 static int stk3310_read_event(struct iio_dev *indio_dev, 193 const struct iio_chan_spec *chan, 194 enum iio_event_type type, 195 enum iio_event_direction dir, 196 enum iio_event_info info, 197 int *val, int *val2) 198 { 199 u8 reg; 200 __be16 buf; 201 int ret; 202 struct stk3310_data *data = iio_priv(indio_dev); 203 204 if (info != IIO_EV_INFO_VALUE) 205 return -EINVAL; 206 207 /* Only proximity interrupts are implemented at the moment. */ 208 if (dir == IIO_EV_DIR_RISING) 209 reg = STK3310_REG_THDH_PS; 210 else if (dir == IIO_EV_DIR_FALLING) 211 reg = STK3310_REG_THDL_PS; 212 else 213 return -EINVAL; 214 215 mutex_lock(&data->lock); 216 ret = regmap_bulk_read(data->regmap, reg, &buf, 2); 217 mutex_unlock(&data->lock); 218 if (ret < 0) { 219 dev_err(&data->client->dev, "register read failed\n"); 220 return ret; 221 } 222 *val = be16_to_cpu(buf); 223 224 return IIO_VAL_INT; 225 } 226 227 static int stk3310_write_event(struct iio_dev *indio_dev, 228 const struct iio_chan_spec *chan, 229 enum iio_event_type type, 230 enum iio_event_direction dir, 231 enum iio_event_info info, 232 int val, int val2) 233 { 234 u8 reg; 235 __be16 buf; 236 int ret; 237 unsigned int index; 238 struct stk3310_data *data = iio_priv(indio_dev); 239 struct i2c_client *client = data->client; 240 241 ret = regmap_field_read(data->reg_ps_gain, &index); 242 if (ret < 0) 243 return ret; 244 245 if (val < 0 || val > stk3310_ps_max[index]) 246 return -EINVAL; 247 248 if (dir == IIO_EV_DIR_RISING) 249 reg = STK3310_REG_THDH_PS; 250 else if (dir == IIO_EV_DIR_FALLING) 251 reg = STK3310_REG_THDL_PS; 252 else 253 return -EINVAL; 254 255 buf = cpu_to_be16(val); 256 ret = regmap_bulk_write(data->regmap, reg, &buf, 2); 257 if (ret < 0) 258 dev_err(&client->dev, "failed to set PS threshold!\n"); 259 260 return ret; 261 } 262 263 static int stk3310_read_event_config(struct iio_dev *indio_dev, 264 const struct iio_chan_spec *chan, 265 enum iio_event_type type, 266 enum iio_event_direction dir) 267 { 268 unsigned int event_val; 269 int ret; 270 struct stk3310_data *data = iio_priv(indio_dev); 271 272 ret = regmap_field_read(data->reg_int_ps, &event_val); 273 if (ret < 0) 274 return ret; 275 276 return event_val; 277 } 278 279 static int stk3310_write_event_config(struct iio_dev *indio_dev, 280 const struct iio_chan_spec *chan, 281 enum iio_event_type type, 282 enum iio_event_direction dir, 283 int state) 284 { 285 int ret; 286 struct stk3310_data *data = iio_priv(indio_dev); 287 struct i2c_client *client = data->client; 288 289 if (state < 0 || state > 7) 290 return -EINVAL; 291 292 /* Set INT_PS value */ 293 mutex_lock(&data->lock); 294 ret = regmap_field_write(data->reg_int_ps, state); 295 if (ret < 0) 296 dev_err(&client->dev, "failed to set interrupt mode\n"); 297 mutex_unlock(&data->lock); 298 299 return ret; 300 } 301 302 static int stk3310_read_raw(struct iio_dev *indio_dev, 303 struct iio_chan_spec const *chan, 304 int *val, int *val2, long mask) 305 { 306 u8 reg; 307 __be16 buf; 308 int ret; 309 unsigned int index; 310 struct stk3310_data *data = iio_priv(indio_dev); 311 struct i2c_client *client = data->client; 312 313 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) 314 return -EINVAL; 315 316 switch (mask) { 317 case IIO_CHAN_INFO_RAW: 318 if (chan->type == IIO_LIGHT) 319 reg = STK3310_REG_ALS_DATA_MSB; 320 else 321 reg = STK3310_REG_PS_DATA_MSB; 322 323 mutex_lock(&data->lock); 324 ret = regmap_bulk_read(data->regmap, reg, &buf, 2); 325 if (ret < 0) { 326 dev_err(&client->dev, "register read failed\n"); 327 mutex_unlock(&data->lock); 328 return ret; 329 } 330 *val = be16_to_cpu(buf); 331 mutex_unlock(&data->lock); 332 return IIO_VAL_INT; 333 case IIO_CHAN_INFO_INT_TIME: 334 if (chan->type == IIO_LIGHT) 335 ret = regmap_field_read(data->reg_als_it, &index); 336 else 337 ret = regmap_field_read(data->reg_ps_it, &index); 338 if (ret < 0) 339 return ret; 340 341 *val = stk3310_it_table[index][0]; 342 *val2 = stk3310_it_table[index][1]; 343 return IIO_VAL_INT_PLUS_MICRO; 344 case IIO_CHAN_INFO_SCALE: 345 if (chan->type == IIO_LIGHT) 346 ret = regmap_field_read(data->reg_als_gain, &index); 347 else 348 ret = regmap_field_read(data->reg_ps_gain, &index); 349 if (ret < 0) 350 return ret; 351 352 *val = stk3310_scale_table[index][0]; 353 *val2 = stk3310_scale_table[index][1]; 354 return IIO_VAL_INT_PLUS_MICRO; 355 } 356 357 return -EINVAL; 358 } 359 360 static int stk3310_write_raw(struct iio_dev *indio_dev, 361 struct iio_chan_spec const *chan, 362 int val, int val2, long mask) 363 { 364 int ret; 365 int index; 366 struct stk3310_data *data = iio_priv(indio_dev); 367 368 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) 369 return -EINVAL; 370 371 switch (mask) { 372 case IIO_CHAN_INFO_INT_TIME: 373 index = stk3310_get_index(stk3310_it_table, 374 ARRAY_SIZE(stk3310_it_table), 375 val, val2); 376 if (index < 0) 377 return -EINVAL; 378 mutex_lock(&data->lock); 379 if (chan->type == IIO_LIGHT) 380 ret = regmap_field_write(data->reg_als_it, index); 381 else 382 ret = regmap_field_write(data->reg_ps_it, index); 383 if (ret < 0) 384 dev_err(&data->client->dev, 385 "sensor configuration failed\n"); 386 mutex_unlock(&data->lock); 387 return ret; 388 389 case IIO_CHAN_INFO_SCALE: 390 index = stk3310_get_index(stk3310_scale_table, 391 ARRAY_SIZE(stk3310_scale_table), 392 val, val2); 393 if (index < 0) 394 return -EINVAL; 395 mutex_lock(&data->lock); 396 if (chan->type == IIO_LIGHT) 397 ret = regmap_field_write(data->reg_als_gain, index); 398 else 399 ret = regmap_field_write(data->reg_ps_gain, index); 400 if (ret < 0) 401 dev_err(&data->client->dev, 402 "sensor configuration failed\n"); 403 mutex_unlock(&data->lock); 404 return ret; 405 } 406 407 return -EINVAL; 408 } 409 410 static const struct iio_info stk3310_info = { 411 .read_raw = stk3310_read_raw, 412 .write_raw = stk3310_write_raw, 413 .attrs = &stk3310_attribute_group, 414 .read_event_value = stk3310_read_event, 415 .write_event_value = stk3310_write_event, 416 .read_event_config = stk3310_read_event_config, 417 .write_event_config = stk3310_write_event_config, 418 }; 419 420 static int stk3310_set_state(struct stk3310_data *data, u8 state) 421 { 422 int ret; 423 struct i2c_client *client = data->client; 424 425 /* 3-bit state; 0b100 is not supported. */ 426 if (state > 7 || state == 4) 427 return -EINVAL; 428 429 mutex_lock(&data->lock); 430 ret = regmap_field_write(data->reg_state, state); 431 if (ret < 0) { 432 dev_err(&client->dev, "failed to change sensor state\n"); 433 } else if (state != STK3310_STATE_STANDBY) { 434 /* Don't reset the 'enabled' flags if we're going in standby */ 435 data->ps_enabled = !!(state & STK3310_STATE_EN_PS); 436 data->als_enabled = !!(state & STK3310_STATE_EN_ALS); 437 } 438 mutex_unlock(&data->lock); 439 440 return ret; 441 } 442 443 static int stk3310_init(struct iio_dev *indio_dev) 444 { 445 int ret; 446 int chipid; 447 u8 state; 448 struct stk3310_data *data = iio_priv(indio_dev); 449 struct i2c_client *client = data->client; 450 451 ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid); 452 if (ret < 0) 453 return ret; 454 455 if (chipid != STK3310_CHIP_ID_VAL && 456 chipid != STK3311_CHIP_ID_VAL && 457 chipid != STK3311X_CHIP_ID_VAL && 458 chipid != STK3335_CHIP_ID_VAL) { 459 dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid); 460 return -ENODEV; 461 } 462 463 state = STK3310_STATE_EN_ALS | STK3310_STATE_EN_PS; 464 ret = stk3310_set_state(data, state); 465 if (ret < 0) { 466 dev_err(&client->dev, "failed to enable sensor"); 467 return ret; 468 } 469 470 /* Enable PS interrupts */ 471 ret = regmap_field_write(data->reg_int_ps, STK3310_PSINT_EN); 472 if (ret < 0) 473 dev_err(&client->dev, "failed to enable interrupts!\n"); 474 475 return ret; 476 } 477 478 static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg) 479 { 480 switch (reg) { 481 case STK3310_REG_ALS_DATA_MSB: 482 case STK3310_REG_ALS_DATA_LSB: 483 case STK3310_REG_PS_DATA_LSB: 484 case STK3310_REG_PS_DATA_MSB: 485 case STK3310_REG_FLAG: 486 return true; 487 default: 488 return false; 489 } 490 } 491 492 static const struct regmap_config stk3310_regmap_config = { 493 .name = STK3310_REGMAP_NAME, 494 .reg_bits = 8, 495 .val_bits = 8, 496 .max_register = STK3310_MAX_REG, 497 .cache_type = REGCACHE_RBTREE, 498 .volatile_reg = stk3310_is_volatile_reg, 499 }; 500 501 static int stk3310_regmap_init(struct stk3310_data *data) 502 { 503 struct regmap *regmap; 504 struct i2c_client *client; 505 506 client = data->client; 507 regmap = devm_regmap_init_i2c(client, &stk3310_regmap_config); 508 if (IS_ERR(regmap)) { 509 dev_err(&client->dev, "regmap initialization failed.\n"); 510 return PTR_ERR(regmap); 511 } 512 data->regmap = regmap; 513 514 STK3310_REGFIELD(state); 515 STK3310_REGFIELD(als_gain); 516 STK3310_REGFIELD(ps_gain); 517 STK3310_REGFIELD(als_it); 518 STK3310_REGFIELD(ps_it); 519 STK3310_REGFIELD(int_ps); 520 STK3310_REGFIELD(flag_psint); 521 STK3310_REGFIELD(flag_nf); 522 523 return 0; 524 } 525 526 static irqreturn_t stk3310_irq_handler(int irq, void *private) 527 { 528 struct iio_dev *indio_dev = private; 529 struct stk3310_data *data = iio_priv(indio_dev); 530 531 data->timestamp = iio_get_time_ns(indio_dev); 532 533 return IRQ_WAKE_THREAD; 534 } 535 536 static irqreturn_t stk3310_irq_event_handler(int irq, void *private) 537 { 538 int ret; 539 unsigned int dir; 540 u64 event; 541 542 struct iio_dev *indio_dev = private; 543 struct stk3310_data *data = iio_priv(indio_dev); 544 545 /* Read FLAG_NF to figure out what threshold has been met. */ 546 mutex_lock(&data->lock); 547 ret = regmap_field_read(data->reg_flag_nf, &dir); 548 if (ret < 0) { 549 dev_err(&data->client->dev, "register read failed: %d\n", ret); 550 goto out; 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 out: 563 mutex_unlock(&data->lock); 564 565 return IRQ_HANDLED; 566 } 567 568 static int stk3310_probe(struct i2c_client *client, 569 const struct i2c_device_id *id) 570 { 571 int ret; 572 struct iio_dev *indio_dev; 573 struct stk3310_data *data; 574 575 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 576 if (!indio_dev) { 577 dev_err(&client->dev, "iio allocation failed!\n"); 578 return -ENOMEM; 579 } 580 581 data = iio_priv(indio_dev); 582 data->client = client; 583 i2c_set_clientdata(client, indio_dev); 584 mutex_init(&data->lock); 585 586 ret = stk3310_regmap_init(data); 587 if (ret < 0) 588 return ret; 589 590 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 {"STK3335", 0}, 670 {} 671 }; 672 MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id); 673 674 static const struct acpi_device_id stk3310_acpi_id[] = { 675 {"STK3310", 0}, 676 {"STK3311", 0}, 677 {"STK3335", 0}, 678 {} 679 }; 680 681 MODULE_DEVICE_TABLE(acpi, stk3310_acpi_id); 682 683 static const struct of_device_id stk3310_of_match[] = { 684 { .compatible = "sensortek,stk3310", }, 685 { .compatible = "sensortek,stk3311", }, 686 { .compatible = "sensortek,stk3335", }, 687 {} 688 }; 689 MODULE_DEVICE_TABLE(of, stk3310_of_match); 690 691 static struct i2c_driver stk3310_driver = { 692 .driver = { 693 .name = "stk3310", 694 .of_match_table = stk3310_of_match, 695 .pm = STK3310_PM_OPS, 696 .acpi_match_table = ACPI_PTR(stk3310_acpi_id), 697 }, 698 .probe = stk3310_probe, 699 .remove = stk3310_remove, 700 .id_table = stk3310_i2c_id, 701 }; 702 703 module_i2c_driver(stk3310_driver); 704 705 MODULE_AUTHOR("Tiberiu Breana <tiberiu.a.breana@intel.com>"); 706 MODULE_DESCRIPTION("STK3310 Ambient Light and Proximity Sensor driver"); 707 MODULE_LICENSE("GPL v2"); 708