1 /* 2 * HID Sensors Driver 3 * Copyright (c) 2012, Intel Corporation. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 */ 19 #include <linux/device.h> 20 #include <linux/hid.h> 21 #include <linux/module.h> 22 #include <linux/slab.h> 23 #include <linux/mfd/core.h> 24 #include <linux/list.h> 25 #include <linux/hid-sensor-ids.h> 26 #include <linux/hid-sensor-hub.h> 27 #include "hid-ids.h" 28 29 #define HID_SENSOR_HUB_ENUM_QUIRK 0x01 30 31 /** 32 * struct sensor_hub_pending - Synchronous read pending information 33 * @status: Pending status true/false. 34 * @ready: Completion synchronization data. 35 * @usage_id: Usage id for physical device, E.g. Gyro usage id. 36 * @attr_usage_id: Usage Id of a field, E.g. X-AXIS for a gyro. 37 * @raw_size: Response size for a read request. 38 * @raw_data: Place holder for received response. 39 */ 40 struct sensor_hub_pending { 41 bool status; 42 struct completion ready; 43 u32 usage_id; 44 u32 attr_usage_id; 45 int raw_size; 46 u8 *raw_data; 47 }; 48 49 /** 50 * struct sensor_hub_data - Hold a instance data for a HID hub device 51 * @hsdev: Stored hid instance for current hub device. 52 * @mutex: Mutex to serialize synchronous request. 53 * @lock: Spin lock to protect pending request structure. 54 * @pending: Holds information of pending sync read request. 55 * @dyn_callback_list: Holds callback function 56 * @dyn_callback_lock: spin lock to protect callback list 57 * @hid_sensor_hub_client_devs: Stores all MFD cells for a hub instance. 58 * @hid_sensor_client_cnt: Number of MFD cells, (no of sensors attached). 59 * @ref_cnt: Number of MFD clients have opened this device 60 */ 61 struct sensor_hub_data { 62 struct mutex mutex; 63 spinlock_t lock; 64 struct sensor_hub_pending pending; 65 struct list_head dyn_callback_list; 66 spinlock_t dyn_callback_lock; 67 struct mfd_cell *hid_sensor_hub_client_devs; 68 int hid_sensor_client_cnt; 69 unsigned long quirks; 70 int ref_cnt; 71 }; 72 73 /** 74 * struct hid_sensor_hub_callbacks_list - Stores callback list 75 * @list: list head. 76 * @usage_id: usage id for a physical device. 77 * @usage_callback: Stores registered callback functions. 78 * @priv: Private data for a physical device. 79 */ 80 struct hid_sensor_hub_callbacks_list { 81 struct list_head list; 82 u32 usage_id; 83 struct hid_sensor_hub_device *hsdev; 84 struct hid_sensor_hub_callbacks *usage_callback; 85 void *priv; 86 }; 87 88 static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev, 89 int dir) 90 { 91 struct hid_report *report; 92 93 list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) { 94 if (report->id == id) 95 return report; 96 } 97 hid_warn(hdev, "No report with id 0x%x found\n", id); 98 99 return NULL; 100 } 101 102 static int sensor_hub_get_physical_device_count(struct hid_device *hdev) 103 { 104 int i; 105 int count = 0; 106 107 for (i = 0; i < hdev->maxcollection; ++i) { 108 struct hid_collection *collection = &hdev->collection[i]; 109 if (collection->type == HID_COLLECTION_PHYSICAL) 110 ++count; 111 } 112 113 return count; 114 } 115 116 static void sensor_hub_fill_attr_info( 117 struct hid_sensor_hub_attribute_info *info, 118 s32 index, s32 report_id, struct hid_field *field) 119 { 120 info->index = index; 121 info->report_id = report_id; 122 info->units = field->unit; 123 info->unit_expo = field->unit_exponent; 124 info->size = (field->report_size * field->report_count)/8; 125 info->logical_minimum = field->logical_minimum; 126 info->logical_maximum = field->logical_maximum; 127 } 128 129 static struct hid_sensor_hub_callbacks *sensor_hub_get_callback( 130 struct hid_device *hdev, 131 u32 usage_id, 132 int collection_index, 133 struct hid_sensor_hub_device **hsdev, 134 void **priv) 135 { 136 struct hid_sensor_hub_callbacks_list *callback; 137 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 138 139 spin_lock(&pdata->dyn_callback_lock); 140 list_for_each_entry(callback, &pdata->dyn_callback_list, list) 141 if (callback->usage_id == usage_id && 142 (collection_index >= 143 callback->hsdev->start_collection_index) && 144 (collection_index < 145 callback->hsdev->end_collection_index)) { 146 *priv = callback->priv; 147 *hsdev = callback->hsdev; 148 spin_unlock(&pdata->dyn_callback_lock); 149 return callback->usage_callback; 150 } 151 spin_unlock(&pdata->dyn_callback_lock); 152 153 return NULL; 154 } 155 156 int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, 157 u32 usage_id, 158 struct hid_sensor_hub_callbacks *usage_callback) 159 { 160 struct hid_sensor_hub_callbacks_list *callback; 161 struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); 162 unsigned long flags; 163 164 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 165 list_for_each_entry(callback, &pdata->dyn_callback_list, list) 166 if (callback->usage_id == usage_id && 167 callback->hsdev == hsdev) { 168 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 169 return -EINVAL; 170 } 171 callback = kzalloc(sizeof(*callback), GFP_ATOMIC); 172 if (!callback) { 173 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 174 return -ENOMEM; 175 } 176 callback->hsdev = hsdev; 177 callback->usage_callback = usage_callback; 178 callback->usage_id = usage_id; 179 callback->priv = NULL; 180 list_add_tail(&callback->list, &pdata->dyn_callback_list); 181 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 182 183 return 0; 184 } 185 EXPORT_SYMBOL_GPL(sensor_hub_register_callback); 186 187 int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, 188 u32 usage_id) 189 { 190 struct hid_sensor_hub_callbacks_list *callback; 191 struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); 192 unsigned long flags; 193 194 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 195 list_for_each_entry(callback, &pdata->dyn_callback_list, list) 196 if (callback->usage_id == usage_id && 197 callback->hsdev == hsdev) { 198 list_del(&callback->list); 199 kfree(callback); 200 break; 201 } 202 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 203 204 return 0; 205 } 206 EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); 207 208 int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, 209 u32 field_index, s32 value) 210 { 211 struct hid_report *report; 212 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 213 int ret = 0; 214 215 mutex_lock(&data->mutex); 216 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 217 if (!report || (field_index >= report->maxfield)) { 218 ret = -EINVAL; 219 goto done_proc; 220 } 221 hid_set_field(report->field[field_index], 0, value); 222 hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); 223 hid_hw_wait(hsdev->hdev); 224 225 done_proc: 226 mutex_unlock(&data->mutex); 227 228 return ret; 229 } 230 EXPORT_SYMBOL_GPL(sensor_hub_set_feature); 231 232 int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, 233 u32 field_index, s32 *value) 234 { 235 struct hid_report *report; 236 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 237 int ret = 0; 238 239 mutex_lock(&data->mutex); 240 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 241 if (!report || (field_index >= report->maxfield) || 242 report->field[field_index]->report_count < 1) { 243 ret = -EINVAL; 244 goto done_proc; 245 } 246 hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); 247 hid_hw_wait(hsdev->hdev); 248 *value = report->field[field_index]->value[0]; 249 250 done_proc: 251 mutex_unlock(&data->mutex); 252 253 return ret; 254 } 255 EXPORT_SYMBOL_GPL(sensor_hub_get_feature); 256 257 258 int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, 259 u32 usage_id, 260 u32 attr_usage_id, u32 report_id) 261 { 262 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 263 unsigned long flags; 264 struct hid_report *report; 265 int ret_val = 0; 266 267 mutex_lock(&data->mutex); 268 memset(&data->pending, 0, sizeof(data->pending)); 269 init_completion(&data->pending.ready); 270 data->pending.usage_id = usage_id; 271 data->pending.attr_usage_id = attr_usage_id; 272 data->pending.raw_size = 0; 273 274 spin_lock_irqsave(&data->lock, flags); 275 data->pending.status = true; 276 spin_unlock_irqrestore(&data->lock, flags); 277 report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); 278 if (!report) 279 goto err_free; 280 281 hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); 282 wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5); 283 switch (data->pending.raw_size) { 284 case 1: 285 ret_val = *(u8 *)data->pending.raw_data; 286 break; 287 case 2: 288 ret_val = *(u16 *)data->pending.raw_data; 289 break; 290 case 4: 291 ret_val = *(u32 *)data->pending.raw_data; 292 break; 293 default: 294 ret_val = 0; 295 } 296 kfree(data->pending.raw_data); 297 298 err_free: 299 data->pending.status = false; 300 mutex_unlock(&data->mutex); 301 302 return ret_val; 303 } 304 EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); 305 306 int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, 307 u32 report_id, int field_index, u32 usage_id) 308 { 309 struct hid_report *report; 310 struct hid_field *field; 311 int i; 312 313 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 314 if (!report || (field_index >= report->maxfield)) 315 goto done_proc; 316 317 field = report->field[field_index]; 318 for (i = 0; i < field->maxusage; ++i) { 319 if (field->usage[i].hid == usage_id) 320 return field->usage[i].usage_index; 321 } 322 323 done_proc: 324 return -EINVAL; 325 } 326 EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); 327 328 int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, 329 u8 type, 330 u32 usage_id, 331 u32 attr_usage_id, 332 struct hid_sensor_hub_attribute_info *info) 333 { 334 int ret = -1; 335 int i; 336 struct hid_report *report; 337 struct hid_field *field; 338 struct hid_report_enum *report_enum; 339 struct hid_device *hdev = hsdev->hdev; 340 341 /* Initialize with defaults */ 342 info->usage_id = usage_id; 343 info->attrib_id = attr_usage_id; 344 info->report_id = -1; 345 info->index = -1; 346 info->units = -1; 347 info->unit_expo = -1; 348 349 report_enum = &hdev->report_enum[type]; 350 list_for_each_entry(report, &report_enum->report_list, list) { 351 for (i = 0; i < report->maxfield; ++i) { 352 field = report->field[i]; 353 if (field->maxusage) { 354 if (field->physical == usage_id && 355 (field->logical == attr_usage_id || 356 field->usage[0].hid == 357 attr_usage_id) && 358 (field->usage[0].collection_index >= 359 hsdev->start_collection_index) && 360 (field->usage[0].collection_index < 361 hsdev->end_collection_index)) { 362 363 sensor_hub_fill_attr_info(info, i, 364 report->id, 365 field); 366 ret = 0; 367 break; 368 } 369 } 370 } 371 372 } 373 374 return ret; 375 } 376 EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); 377 378 #ifdef CONFIG_PM 379 static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) 380 { 381 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 382 struct hid_sensor_hub_callbacks_list *callback; 383 unsigned long flags; 384 385 hid_dbg(hdev, " sensor_hub_suspend\n"); 386 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 387 list_for_each_entry(callback, &pdata->dyn_callback_list, list) { 388 if (callback->usage_callback->suspend) 389 callback->usage_callback->suspend( 390 callback->hsdev, callback->priv); 391 } 392 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 393 394 return 0; 395 } 396 397 static int sensor_hub_resume(struct hid_device *hdev) 398 { 399 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 400 struct hid_sensor_hub_callbacks_list *callback; 401 unsigned long flags; 402 403 hid_dbg(hdev, " sensor_hub_resume\n"); 404 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 405 list_for_each_entry(callback, &pdata->dyn_callback_list, list) { 406 if (callback->usage_callback->resume) 407 callback->usage_callback->resume( 408 callback->hsdev, callback->priv); 409 } 410 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 411 412 return 0; 413 } 414 415 static int sensor_hub_reset_resume(struct hid_device *hdev) 416 { 417 return 0; 418 } 419 #endif 420 421 /* 422 * Handle raw report as sent by device 423 */ 424 static int sensor_hub_raw_event(struct hid_device *hdev, 425 struct hid_report *report, u8 *raw_data, int size) 426 { 427 int i; 428 u8 *ptr; 429 int sz; 430 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 431 unsigned long flags; 432 struct hid_sensor_hub_callbacks *callback = NULL; 433 struct hid_collection *collection = NULL; 434 void *priv = NULL; 435 struct hid_sensor_hub_device *hsdev = NULL; 436 437 hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", 438 report->id, size, report->type); 439 hid_dbg(hdev, "maxfield:%d\n", report->maxfield); 440 if (report->type != HID_INPUT_REPORT) 441 return 1; 442 443 ptr = raw_data; 444 ptr++; /* Skip report id */ 445 446 spin_lock_irqsave(&pdata->lock, flags); 447 448 for (i = 0; i < report->maxfield; ++i) { 449 hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", 450 i, report->field[i]->usage->collection_index, 451 report->field[i]->usage->hid, 452 (report->field[i]->report_size * 453 report->field[i]->report_count)/8); 454 sz = (report->field[i]->report_size * 455 report->field[i]->report_count)/8; 456 if (pdata->pending.status && pdata->pending.attr_usage_id == 457 report->field[i]->usage->hid) { 458 hid_dbg(hdev, "data was pending ...\n"); 459 pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); 460 if (pdata->pending.raw_data) 461 pdata->pending.raw_size = sz; 462 else 463 pdata->pending.raw_size = 0; 464 complete(&pdata->pending.ready); 465 } 466 collection = &hdev->collection[ 467 report->field[i]->usage->collection_index]; 468 hid_dbg(hdev, "collection->usage %x\n", 469 collection->usage); 470 471 callback = sensor_hub_get_callback(hdev, 472 report->field[i]->physical, 473 report->field[i]->usage[0].collection_index, 474 &hsdev, &priv); 475 476 if (callback && callback->capture_sample) { 477 if (report->field[i]->logical) 478 callback->capture_sample(hsdev, 479 report->field[i]->logical, sz, ptr, 480 callback->pdev); 481 else 482 callback->capture_sample(hsdev, 483 report->field[i]->usage->hid, sz, ptr, 484 callback->pdev); 485 } 486 ptr += sz; 487 } 488 if (callback && collection && callback->send_event) 489 callback->send_event(hsdev, collection->usage, 490 callback->pdev); 491 spin_unlock_irqrestore(&pdata->lock, flags); 492 493 return 1; 494 } 495 496 int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) 497 { 498 int ret = 0; 499 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 500 501 mutex_lock(&data->mutex); 502 if (!data->ref_cnt) { 503 ret = hid_hw_open(hsdev->hdev); 504 if (ret) { 505 hid_err(hsdev->hdev, "failed to open hid device\n"); 506 mutex_unlock(&data->mutex); 507 return ret; 508 } 509 } 510 data->ref_cnt++; 511 mutex_unlock(&data->mutex); 512 513 return ret; 514 } 515 EXPORT_SYMBOL_GPL(sensor_hub_device_open); 516 517 void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) 518 { 519 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 520 521 mutex_lock(&data->mutex); 522 data->ref_cnt--; 523 if (!data->ref_cnt) 524 hid_hw_close(hsdev->hdev); 525 mutex_unlock(&data->mutex); 526 } 527 EXPORT_SYMBOL_GPL(sensor_hub_device_close); 528 529 static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, 530 unsigned int *rsize) 531 { 532 int index; 533 struct sensor_hub_data *sd = hid_get_drvdata(hdev); 534 unsigned char report_block[] = { 535 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; 536 unsigned char power_block[] = { 537 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; 538 539 if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { 540 hid_dbg(hdev, "No Enum quirks\n"); 541 return rdesc; 542 } 543 544 /* Looks for power and report state usage id and force to 1 */ 545 for (index = 0; index < *rsize; ++index) { 546 if (((*rsize - index) > sizeof(report_block)) && 547 !memcmp(&rdesc[index], report_block, 548 sizeof(report_block))) { 549 rdesc[index + 4] = 0x01; 550 index += sizeof(report_block); 551 } 552 if (((*rsize - index) > sizeof(power_block)) && 553 !memcmp(&rdesc[index], power_block, 554 sizeof(power_block))) { 555 rdesc[index + 4] = 0x01; 556 index += sizeof(power_block); 557 } 558 } 559 560 return rdesc; 561 } 562 563 static int sensor_hub_probe(struct hid_device *hdev, 564 const struct hid_device_id *id) 565 { 566 int ret; 567 struct sensor_hub_data *sd; 568 int i; 569 char *name; 570 int dev_cnt; 571 struct hid_sensor_hub_device *hsdev; 572 struct hid_sensor_hub_device *last_hsdev = NULL; 573 574 sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); 575 if (!sd) { 576 hid_err(hdev, "cannot allocate Sensor data\n"); 577 return -ENOMEM; 578 } 579 580 hid_set_drvdata(hdev, sd); 581 sd->quirks = id->driver_data; 582 583 spin_lock_init(&sd->lock); 584 spin_lock_init(&sd->dyn_callback_lock); 585 mutex_init(&sd->mutex); 586 ret = hid_parse(hdev); 587 if (ret) { 588 hid_err(hdev, "parse failed\n"); 589 return ret; 590 } 591 INIT_LIST_HEAD(&hdev->inputs); 592 593 ret = hid_hw_start(hdev, 0); 594 if (ret) { 595 hid_err(hdev, "hw start failed\n"); 596 return ret; 597 } 598 INIT_LIST_HEAD(&sd->dyn_callback_list); 599 sd->hid_sensor_client_cnt = 0; 600 601 dev_cnt = sensor_hub_get_physical_device_count(hdev); 602 if (dev_cnt > HID_MAX_PHY_DEVICES) { 603 hid_err(hdev, "Invalid Physical device count\n"); 604 ret = -EINVAL; 605 goto err_stop_hw; 606 } 607 sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * 608 sizeof(struct mfd_cell), 609 GFP_KERNEL); 610 if (sd->hid_sensor_hub_client_devs == NULL) { 611 hid_err(hdev, "Failed to allocate memory for mfd cells\n"); 612 ret = -ENOMEM; 613 goto err_stop_hw; 614 } 615 616 for (i = 0; i < hdev->maxcollection; ++i) { 617 struct hid_collection *collection = &hdev->collection[i]; 618 619 if (collection->type == HID_COLLECTION_PHYSICAL) { 620 621 hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), 622 GFP_KERNEL); 623 if (!hsdev) { 624 hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); 625 ret = -ENOMEM; 626 goto err_stop_hw; 627 } 628 hsdev->hdev = hdev; 629 hsdev->vendor_id = hdev->vendor; 630 hsdev->product_id = hdev->product; 631 hsdev->start_collection_index = i; 632 if (last_hsdev) 633 last_hsdev->end_collection_index = i; 634 last_hsdev = hsdev; 635 name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 636 "HID-SENSOR-%x", 637 collection->usage); 638 if (name == NULL) { 639 hid_err(hdev, "Failed MFD device name\n"); 640 ret = -ENOMEM; 641 goto err_stop_hw; 642 } 643 sd->hid_sensor_hub_client_devs[ 644 sd->hid_sensor_client_cnt].id = 645 PLATFORM_DEVID_AUTO; 646 sd->hid_sensor_hub_client_devs[ 647 sd->hid_sensor_client_cnt].name = name; 648 sd->hid_sensor_hub_client_devs[ 649 sd->hid_sensor_client_cnt].platform_data = 650 hsdev; 651 sd->hid_sensor_hub_client_devs[ 652 sd->hid_sensor_client_cnt].pdata_size = 653 sizeof(*hsdev); 654 hid_dbg(hdev, "Adding %s:%d\n", name, 655 hsdev->start_collection_index); 656 sd->hid_sensor_client_cnt++; 657 } 658 } 659 if (last_hsdev) 660 last_hsdev->end_collection_index = i; 661 662 ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs, 663 sd->hid_sensor_client_cnt, NULL, 0, NULL); 664 if (ret < 0) 665 goto err_stop_hw; 666 667 return ret; 668 669 err_stop_hw: 670 hid_hw_stop(hdev); 671 672 return ret; 673 } 674 675 static void sensor_hub_remove(struct hid_device *hdev) 676 { 677 struct sensor_hub_data *data = hid_get_drvdata(hdev); 678 unsigned long flags; 679 680 hid_dbg(hdev, " hardware removed\n"); 681 hid_hw_close(hdev); 682 hid_hw_stop(hdev); 683 spin_lock_irqsave(&data->lock, flags); 684 if (data->pending.status) 685 complete(&data->pending.ready); 686 spin_unlock_irqrestore(&data->lock, flags); 687 mfd_remove_devices(&hdev->dev); 688 hid_set_drvdata(hdev, NULL); 689 mutex_destroy(&data->mutex); 690 } 691 692 static const struct hid_device_id sensor_hub_devices[] = { 693 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, 694 USB_DEVICE_ID_INTEL_HID_SENSOR_0), 695 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 696 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, 697 USB_DEVICE_ID_INTEL_HID_SENSOR_0), 698 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 699 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, 700 USB_DEVICE_ID_INTEL_HID_SENSOR_1), 701 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 702 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, 703 USB_DEVICE_ID_MS_SURFACE_PRO_2), 704 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 705 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, 706 USB_DEVICE_ID_MS_TOUCH_COVER_2), 707 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 708 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, 709 USB_DEVICE_ID_MS_TYPE_COVER_2), 710 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 711 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, 712 USB_DEVICE_ID_STM_HID_SENSOR), 713 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 714 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, 715 USB_DEVICE_ID_STM_HID_SENSOR_1), 716 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 717 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, 718 USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), 719 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 720 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, 721 HID_ANY_ID) }, 722 { } 723 }; 724 MODULE_DEVICE_TABLE(hid, sensor_hub_devices); 725 726 static struct hid_driver sensor_hub_driver = { 727 .name = "hid-sensor-hub", 728 .id_table = sensor_hub_devices, 729 .probe = sensor_hub_probe, 730 .remove = sensor_hub_remove, 731 .raw_event = sensor_hub_raw_event, 732 .report_fixup = sensor_hub_report_fixup, 733 #ifdef CONFIG_PM 734 .suspend = sensor_hub_suspend, 735 .resume = sensor_hub_resume, 736 .reset_resume = sensor_hub_reset_resume, 737 #endif 738 }; 739 module_hid_driver(sensor_hub_driver); 740 741 MODULE_DESCRIPTION("HID Sensor Hub driver"); 742 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); 743 MODULE_LICENSE("GPL"); 744