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 uint32_t ps_near_level; 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 ssize_t stk3310_read_near_level(struct iio_dev *indio_dev, 140 uintptr_t priv, 141 const struct iio_chan_spec *chan, 142 char *buf) 143 { 144 struct stk3310_data *data = iio_priv(indio_dev); 145 146 return sprintf(buf, "%u\n", data->ps_near_level); 147 } 148 149 static const struct iio_chan_spec_ext_info stk3310_ext_info[] = { 150 { 151 .name = "nearlevel", 152 .shared = IIO_SEPARATE, 153 .read = stk3310_read_near_level, 154 }, 155 { /* sentinel */ } 156 }; 157 158 static const struct iio_chan_spec stk3310_channels[] = { 159 { 160 .type = IIO_LIGHT, 161 .info_mask_separate = 162 BIT(IIO_CHAN_INFO_RAW) | 163 BIT(IIO_CHAN_INFO_SCALE) | 164 BIT(IIO_CHAN_INFO_INT_TIME), 165 }, 166 { 167 .type = IIO_PROXIMITY, 168 .info_mask_separate = 169 BIT(IIO_CHAN_INFO_RAW) | 170 BIT(IIO_CHAN_INFO_SCALE) | 171 BIT(IIO_CHAN_INFO_INT_TIME), 172 .event_spec = stk3310_events, 173 .num_event_specs = ARRAY_SIZE(stk3310_events), 174 .ext_info = stk3310_ext_info, 175 } 176 }; 177 178 static IIO_CONST_ATTR(in_illuminance_scale_available, STK3310_SCALE_AVAILABLE); 179 180 static IIO_CONST_ATTR(in_proximity_scale_available, STK3310_SCALE_AVAILABLE); 181 182 static IIO_CONST_ATTR(in_illuminance_integration_time_available, 183 STK3310_IT_AVAILABLE); 184 185 static IIO_CONST_ATTR(in_proximity_integration_time_available, 186 STK3310_IT_AVAILABLE); 187 188 static struct attribute *stk3310_attributes[] = { 189 &iio_const_attr_in_illuminance_scale_available.dev_attr.attr, 190 &iio_const_attr_in_proximity_scale_available.dev_attr.attr, 191 &iio_const_attr_in_illuminance_integration_time_available.dev_attr.attr, 192 &iio_const_attr_in_proximity_integration_time_available.dev_attr.attr, 193 NULL, 194 }; 195 196 static const struct attribute_group stk3310_attribute_group = { 197 .attrs = stk3310_attributes 198 }; 199 200 static int stk3310_get_index(const int table[][2], int table_size, 201 int val, int val2) 202 { 203 int i; 204 205 for (i = 0; i < table_size; i++) { 206 if (val == table[i][0] && val2 == table[i][1]) 207 return i; 208 } 209 210 return -EINVAL; 211 } 212 213 static int stk3310_read_event(struct iio_dev *indio_dev, 214 const struct iio_chan_spec *chan, 215 enum iio_event_type type, 216 enum iio_event_direction dir, 217 enum iio_event_info info, 218 int *val, int *val2) 219 { 220 u8 reg; 221 __be16 buf; 222 int ret; 223 struct stk3310_data *data = iio_priv(indio_dev); 224 225 if (info != IIO_EV_INFO_VALUE) 226 return -EINVAL; 227 228 /* Only proximity interrupts are implemented at the moment. */ 229 if (dir == IIO_EV_DIR_RISING) 230 reg = STK3310_REG_THDH_PS; 231 else if (dir == IIO_EV_DIR_FALLING) 232 reg = STK3310_REG_THDL_PS; 233 else 234 return -EINVAL; 235 236 mutex_lock(&data->lock); 237 ret = regmap_bulk_read(data->regmap, reg, &buf, 2); 238 mutex_unlock(&data->lock); 239 if (ret < 0) { 240 dev_err(&data->client->dev, "register read failed\n"); 241 return ret; 242 } 243 *val = be16_to_cpu(buf); 244 245 return IIO_VAL_INT; 246 } 247 248 static int stk3310_write_event(struct iio_dev *indio_dev, 249 const struct iio_chan_spec *chan, 250 enum iio_event_type type, 251 enum iio_event_direction dir, 252 enum iio_event_info info, 253 int val, int val2) 254 { 255 u8 reg; 256 __be16 buf; 257 int ret; 258 unsigned int index; 259 struct stk3310_data *data = iio_priv(indio_dev); 260 struct i2c_client *client = data->client; 261 262 ret = regmap_field_read(data->reg_ps_gain, &index); 263 if (ret < 0) 264 return ret; 265 266 if (val < 0 || val > stk3310_ps_max[index]) 267 return -EINVAL; 268 269 if (dir == IIO_EV_DIR_RISING) 270 reg = STK3310_REG_THDH_PS; 271 else if (dir == IIO_EV_DIR_FALLING) 272 reg = STK3310_REG_THDL_PS; 273 else 274 return -EINVAL; 275 276 buf = cpu_to_be16(val); 277 ret = regmap_bulk_write(data->regmap, reg, &buf, 2); 278 if (ret < 0) 279 dev_err(&client->dev, "failed to set PS threshold!\n"); 280 281 return ret; 282 } 283 284 static int stk3310_read_event_config(struct iio_dev *indio_dev, 285 const struct iio_chan_spec *chan, 286 enum iio_event_type type, 287 enum iio_event_direction dir) 288 { 289 unsigned int event_val; 290 int ret; 291 struct stk3310_data *data = iio_priv(indio_dev); 292 293 ret = regmap_field_read(data->reg_int_ps, &event_val); 294 if (ret < 0) 295 return ret; 296 297 return event_val; 298 } 299 300 static int stk3310_write_event_config(struct iio_dev *indio_dev, 301 const struct iio_chan_spec *chan, 302 enum iio_event_type type, 303 enum iio_event_direction dir, 304 int state) 305 { 306 int ret; 307 struct stk3310_data *data = iio_priv(indio_dev); 308 struct i2c_client *client = data->client; 309 310 if (state < 0 || state > 7) 311 return -EINVAL; 312 313 /* Set INT_PS value */ 314 mutex_lock(&data->lock); 315 ret = regmap_field_write(data->reg_int_ps, state); 316 if (ret < 0) 317 dev_err(&client->dev, "failed to set interrupt mode\n"); 318 mutex_unlock(&data->lock); 319 320 return ret; 321 } 322 323 static int stk3310_read_raw(struct iio_dev *indio_dev, 324 struct iio_chan_spec const *chan, 325 int *val, int *val2, long mask) 326 { 327 u8 reg; 328 __be16 buf; 329 int ret; 330 unsigned int index; 331 struct stk3310_data *data = iio_priv(indio_dev); 332 struct i2c_client *client = data->client; 333 334 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) 335 return -EINVAL; 336 337 switch (mask) { 338 case IIO_CHAN_INFO_RAW: 339 if (chan->type == IIO_LIGHT) 340 reg = STK3310_REG_ALS_DATA_MSB; 341 else 342 reg = STK3310_REG_PS_DATA_MSB; 343 344 mutex_lock(&data->lock); 345 ret = regmap_bulk_read(data->regmap, reg, &buf, 2); 346 if (ret < 0) { 347 dev_err(&client->dev, "register read failed\n"); 348 mutex_unlock(&data->lock); 349 return ret; 350 } 351 *val = be16_to_cpu(buf); 352 mutex_unlock(&data->lock); 353 return IIO_VAL_INT; 354 case IIO_CHAN_INFO_INT_TIME: 355 if (chan->type == IIO_LIGHT) 356 ret = regmap_field_read(data->reg_als_it, &index); 357 else 358 ret = regmap_field_read(data->reg_ps_it, &index); 359 if (ret < 0) 360 return ret; 361 362 *val = stk3310_it_table[index][0]; 363 *val2 = stk3310_it_table[index][1]; 364 return IIO_VAL_INT_PLUS_MICRO; 365 case IIO_CHAN_INFO_SCALE: 366 if (chan->type == IIO_LIGHT) 367 ret = regmap_field_read(data->reg_als_gain, &index); 368 else 369 ret = regmap_field_read(data->reg_ps_gain, &index); 370 if (ret < 0) 371 return ret; 372 373 *val = stk3310_scale_table[index][0]; 374 *val2 = stk3310_scale_table[index][1]; 375 return IIO_VAL_INT_PLUS_MICRO; 376 } 377 378 return -EINVAL; 379 } 380 381 static int stk3310_write_raw(struct iio_dev *indio_dev, 382 struct iio_chan_spec const *chan, 383 int val, int val2, long mask) 384 { 385 int ret; 386 int index; 387 struct stk3310_data *data = iio_priv(indio_dev); 388 389 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) 390 return -EINVAL; 391 392 switch (mask) { 393 case IIO_CHAN_INFO_INT_TIME: 394 index = stk3310_get_index(stk3310_it_table, 395 ARRAY_SIZE(stk3310_it_table), 396 val, val2); 397 if (index < 0) 398 return -EINVAL; 399 mutex_lock(&data->lock); 400 if (chan->type == IIO_LIGHT) 401 ret = regmap_field_write(data->reg_als_it, index); 402 else 403 ret = regmap_field_write(data->reg_ps_it, index); 404 if (ret < 0) 405 dev_err(&data->client->dev, 406 "sensor configuration failed\n"); 407 mutex_unlock(&data->lock); 408 return ret; 409 410 case IIO_CHAN_INFO_SCALE: 411 index = stk3310_get_index(stk3310_scale_table, 412 ARRAY_SIZE(stk3310_scale_table), 413 val, val2); 414 if (index < 0) 415 return -EINVAL; 416 mutex_lock(&data->lock); 417 if (chan->type == IIO_LIGHT) 418 ret = regmap_field_write(data->reg_als_gain, index); 419 else 420 ret = regmap_field_write(data->reg_ps_gain, index); 421 if (ret < 0) 422 dev_err(&data->client->dev, 423 "sensor configuration failed\n"); 424 mutex_unlock(&data->lock); 425 return ret; 426 } 427 428 return -EINVAL; 429 } 430 431 static const struct iio_info stk3310_info = { 432 .read_raw = stk3310_read_raw, 433 .write_raw = stk3310_write_raw, 434 .attrs = &stk3310_attribute_group, 435 .read_event_value = stk3310_read_event, 436 .write_event_value = stk3310_write_event, 437 .read_event_config = stk3310_read_event_config, 438 .write_event_config = stk3310_write_event_config, 439 }; 440 441 static int stk3310_set_state(struct stk3310_data *data, u8 state) 442 { 443 int ret; 444 struct i2c_client *client = data->client; 445 446 /* 3-bit state; 0b100 is not supported. */ 447 if (state > 7 || state == 4) 448 return -EINVAL; 449 450 mutex_lock(&data->lock); 451 ret = regmap_field_write(data->reg_state, state); 452 if (ret < 0) { 453 dev_err(&client->dev, "failed to change sensor state\n"); 454 } else if (state != STK3310_STATE_STANDBY) { 455 /* Don't reset the 'enabled' flags if we're going in standby */ 456 data->ps_enabled = !!(state & STK3310_STATE_EN_PS); 457 data->als_enabled = !!(state & STK3310_STATE_EN_ALS); 458 } 459 mutex_unlock(&data->lock); 460 461 return ret; 462 } 463 464 static int stk3310_init(struct iio_dev *indio_dev) 465 { 466 int ret; 467 int chipid; 468 u8 state; 469 struct stk3310_data *data = iio_priv(indio_dev); 470 struct i2c_client *client = data->client; 471 472 ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid); 473 if (ret < 0) 474 return ret; 475 476 if (chipid != STK3310_CHIP_ID_VAL && 477 chipid != STK3311_CHIP_ID_VAL && 478 chipid != STK3311X_CHIP_ID_VAL && 479 chipid != STK3335_CHIP_ID_VAL) { 480 dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid); 481 return -ENODEV; 482 } 483 484 state = STK3310_STATE_EN_ALS | STK3310_STATE_EN_PS; 485 ret = stk3310_set_state(data, state); 486 if (ret < 0) { 487 dev_err(&client->dev, "failed to enable sensor"); 488 return ret; 489 } 490 491 /* Enable PS interrupts */ 492 ret = regmap_field_write(data->reg_int_ps, STK3310_PSINT_EN); 493 if (ret < 0) 494 dev_err(&client->dev, "failed to enable interrupts!\n"); 495 496 return ret; 497 } 498 499 static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg) 500 { 501 switch (reg) { 502 case STK3310_REG_ALS_DATA_MSB: 503 case STK3310_REG_ALS_DATA_LSB: 504 case STK3310_REG_PS_DATA_LSB: 505 case STK3310_REG_PS_DATA_MSB: 506 case STK3310_REG_FLAG: 507 return true; 508 default: 509 return false; 510 } 511 } 512 513 static const struct regmap_config stk3310_regmap_config = { 514 .name = STK3310_REGMAP_NAME, 515 .reg_bits = 8, 516 .val_bits = 8, 517 .max_register = STK3310_MAX_REG, 518 .cache_type = REGCACHE_RBTREE, 519 .volatile_reg = stk3310_is_volatile_reg, 520 }; 521 522 static int stk3310_regmap_init(struct stk3310_data *data) 523 { 524 struct regmap *regmap; 525 struct i2c_client *client; 526 527 client = data->client; 528 regmap = devm_regmap_init_i2c(client, &stk3310_regmap_config); 529 if (IS_ERR(regmap)) { 530 dev_err(&client->dev, "regmap initialization failed.\n"); 531 return PTR_ERR(regmap); 532 } 533 data->regmap = regmap; 534 535 STK3310_REGFIELD(state); 536 STK3310_REGFIELD(als_gain); 537 STK3310_REGFIELD(ps_gain); 538 STK3310_REGFIELD(als_it); 539 STK3310_REGFIELD(ps_it); 540 STK3310_REGFIELD(int_ps); 541 STK3310_REGFIELD(flag_psint); 542 STK3310_REGFIELD(flag_nf); 543 544 return 0; 545 } 546 547 static irqreturn_t stk3310_irq_handler(int irq, void *private) 548 { 549 struct iio_dev *indio_dev = private; 550 struct stk3310_data *data = iio_priv(indio_dev); 551 552 data->timestamp = iio_get_time_ns(indio_dev); 553 554 return IRQ_WAKE_THREAD; 555 } 556 557 static irqreturn_t stk3310_irq_event_handler(int irq, void *private) 558 { 559 int ret; 560 unsigned int dir; 561 u64 event; 562 563 struct iio_dev *indio_dev = private; 564 struct stk3310_data *data = iio_priv(indio_dev); 565 566 /* Read FLAG_NF to figure out what threshold has been met. */ 567 mutex_lock(&data->lock); 568 ret = regmap_field_read(data->reg_flag_nf, &dir); 569 if (ret < 0) { 570 dev_err(&data->client->dev, "register read failed: %d\n", ret); 571 goto out; 572 } 573 event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1, 574 IIO_EV_TYPE_THRESH, 575 (dir ? IIO_EV_DIR_FALLING : 576 IIO_EV_DIR_RISING)); 577 iio_push_event(indio_dev, event, data->timestamp); 578 579 /* Reset the interrupt flag */ 580 ret = regmap_field_write(data->reg_flag_psint, 0); 581 if (ret < 0) 582 dev_err(&data->client->dev, "failed to reset interrupts\n"); 583 out: 584 mutex_unlock(&data->lock); 585 586 return IRQ_HANDLED; 587 } 588 589 static int stk3310_probe(struct i2c_client *client) 590 { 591 int ret; 592 struct iio_dev *indio_dev; 593 struct stk3310_data *data; 594 595 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 596 if (!indio_dev) { 597 dev_err(&client->dev, "iio allocation failed!\n"); 598 return -ENOMEM; 599 } 600 601 data = iio_priv(indio_dev); 602 data->client = client; 603 i2c_set_clientdata(client, indio_dev); 604 605 device_property_read_u32(&client->dev, "proximity-near-level", 606 &data->ps_near_level); 607 608 mutex_init(&data->lock); 609 610 ret = stk3310_regmap_init(data); 611 if (ret < 0) 612 return ret; 613 614 indio_dev->info = &stk3310_info; 615 indio_dev->name = STK3310_DRIVER_NAME; 616 indio_dev->modes = INDIO_DIRECT_MODE; 617 indio_dev->channels = stk3310_channels; 618 indio_dev->num_channels = ARRAY_SIZE(stk3310_channels); 619 620 ret = stk3310_init(indio_dev); 621 if (ret < 0) 622 return ret; 623 624 if (client->irq > 0) { 625 ret = devm_request_threaded_irq(&client->dev, client->irq, 626 stk3310_irq_handler, 627 stk3310_irq_event_handler, 628 IRQF_TRIGGER_FALLING | 629 IRQF_ONESHOT, 630 STK3310_EVENT, indio_dev); 631 if (ret < 0) { 632 dev_err(&client->dev, "request irq %d failed\n", 633 client->irq); 634 goto err_standby; 635 } 636 } 637 638 ret = iio_device_register(indio_dev); 639 if (ret < 0) { 640 dev_err(&client->dev, "device_register failed\n"); 641 goto err_standby; 642 } 643 644 return 0; 645 646 err_standby: 647 stk3310_set_state(data, STK3310_STATE_STANDBY); 648 return ret; 649 } 650 651 static void stk3310_remove(struct i2c_client *client) 652 { 653 struct iio_dev *indio_dev = i2c_get_clientdata(client); 654 655 iio_device_unregister(indio_dev); 656 stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY); 657 } 658 659 static int stk3310_suspend(struct device *dev) 660 { 661 struct stk3310_data *data; 662 663 data = iio_priv(i2c_get_clientdata(to_i2c_client(dev))); 664 665 return stk3310_set_state(data, STK3310_STATE_STANDBY); 666 } 667 668 static int stk3310_resume(struct device *dev) 669 { 670 u8 state = 0; 671 struct stk3310_data *data; 672 673 data = iio_priv(i2c_get_clientdata(to_i2c_client(dev))); 674 if (data->ps_enabled) 675 state |= STK3310_STATE_EN_PS; 676 if (data->als_enabled) 677 state |= STK3310_STATE_EN_ALS; 678 679 return stk3310_set_state(data, state); 680 } 681 682 static DEFINE_SIMPLE_DEV_PM_OPS(stk3310_pm_ops, stk3310_suspend, 683 stk3310_resume); 684 685 static const struct i2c_device_id stk3310_i2c_id[] = { 686 {"STK3310", 0}, 687 {"STK3311", 0}, 688 {"STK3335", 0}, 689 {} 690 }; 691 MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id); 692 693 static const struct acpi_device_id stk3310_acpi_id[] = { 694 {"STK3310", 0}, 695 {"STK3311", 0}, 696 {"STK3335", 0}, 697 {} 698 }; 699 700 MODULE_DEVICE_TABLE(acpi, stk3310_acpi_id); 701 702 static const struct of_device_id stk3310_of_match[] = { 703 { .compatible = "sensortek,stk3310", }, 704 { .compatible = "sensortek,stk3311", }, 705 { .compatible = "sensortek,stk3335", }, 706 {} 707 }; 708 MODULE_DEVICE_TABLE(of, stk3310_of_match); 709 710 static struct i2c_driver stk3310_driver = { 711 .driver = { 712 .name = "stk3310", 713 .of_match_table = stk3310_of_match, 714 .pm = pm_sleep_ptr(&stk3310_pm_ops), 715 .acpi_match_table = ACPI_PTR(stk3310_acpi_id), 716 }, 717 .probe = stk3310_probe, 718 .remove = stk3310_remove, 719 .id_table = stk3310_i2c_id, 720 }; 721 722 module_i2c_driver(stk3310_driver); 723 724 MODULE_AUTHOR("Tiberiu Breana <tiberiu.a.breana@intel.com>"); 725 MODULE_DESCRIPTION("STK3310 Ambient Light and Proximity Sensor driver"); 726 MODULE_LICENSE("GPL v2"); 727