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 unsigned long flags; 139 140 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 141 list_for_each_entry(callback, &pdata->dyn_callback_list, list) 142 if (callback->usage_id == usage_id && 143 (collection_index >= 144 callback->hsdev->start_collection_index) && 145 (collection_index < 146 callback->hsdev->end_collection_index)) { 147 *priv = callback->priv; 148 *hsdev = callback->hsdev; 149 spin_unlock_irqrestore(&pdata->dyn_callback_lock, 150 flags); 151 return callback->usage_callback; 152 } 153 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 154 155 return NULL; 156 } 157 158 int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev, 159 u32 usage_id, 160 struct hid_sensor_hub_callbacks *usage_callback) 161 { 162 struct hid_sensor_hub_callbacks_list *callback; 163 struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); 164 unsigned long flags; 165 166 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 167 list_for_each_entry(callback, &pdata->dyn_callback_list, list) 168 if (callback->usage_id == usage_id && 169 callback->hsdev == hsdev) { 170 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 171 return -EINVAL; 172 } 173 callback = kzalloc(sizeof(*callback), GFP_ATOMIC); 174 if (!callback) { 175 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 176 return -ENOMEM; 177 } 178 callback->hsdev = hsdev; 179 callback->usage_callback = usage_callback; 180 callback->usage_id = usage_id; 181 callback->priv = NULL; 182 list_add_tail(&callback->list, &pdata->dyn_callback_list); 183 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 184 185 return 0; 186 } 187 EXPORT_SYMBOL_GPL(sensor_hub_register_callback); 188 189 int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, 190 u32 usage_id) 191 { 192 struct hid_sensor_hub_callbacks_list *callback; 193 struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); 194 unsigned long flags; 195 196 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 197 list_for_each_entry(callback, &pdata->dyn_callback_list, list) 198 if (callback->usage_id == usage_id && 199 callback->hsdev == hsdev) { 200 list_del(&callback->list); 201 kfree(callback); 202 break; 203 } 204 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 205 206 return 0; 207 } 208 EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); 209 210 int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, 211 u32 field_index, s32 value) 212 { 213 struct hid_report *report; 214 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 215 int ret = 0; 216 217 mutex_lock(&data->mutex); 218 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 219 if (!report || (field_index >= report->maxfield)) { 220 ret = -EINVAL; 221 goto done_proc; 222 } 223 hid_set_field(report->field[field_index], 0, value); 224 hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); 225 hid_hw_wait(hsdev->hdev); 226 227 done_proc: 228 mutex_unlock(&data->mutex); 229 230 return ret; 231 } 232 EXPORT_SYMBOL_GPL(sensor_hub_set_feature); 233 234 int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, 235 u32 field_index, s32 *value) 236 { 237 struct hid_report *report; 238 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 239 int ret = 0; 240 241 mutex_lock(&data->mutex); 242 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 243 if (!report || (field_index >= report->maxfield) || 244 report->field[field_index]->report_count < 1) { 245 ret = -EINVAL; 246 goto done_proc; 247 } 248 hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); 249 hid_hw_wait(hsdev->hdev); 250 *value = report->field[field_index]->value[0]; 251 252 done_proc: 253 mutex_unlock(&data->mutex); 254 255 return ret; 256 } 257 EXPORT_SYMBOL_GPL(sensor_hub_get_feature); 258 259 260 int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, 261 u32 usage_id, 262 u32 attr_usage_id, u32 report_id) 263 { 264 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 265 unsigned long flags; 266 struct hid_report *report; 267 int ret_val = 0; 268 269 mutex_lock(&data->mutex); 270 memset(&data->pending, 0, sizeof(data->pending)); 271 init_completion(&data->pending.ready); 272 data->pending.usage_id = usage_id; 273 data->pending.attr_usage_id = attr_usage_id; 274 data->pending.raw_size = 0; 275 276 spin_lock_irqsave(&data->lock, flags); 277 data->pending.status = true; 278 spin_unlock_irqrestore(&data->lock, flags); 279 report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); 280 if (!report) 281 goto err_free; 282 283 hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); 284 wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5); 285 switch (data->pending.raw_size) { 286 case 1: 287 ret_val = *(u8 *)data->pending.raw_data; 288 break; 289 case 2: 290 ret_val = *(u16 *)data->pending.raw_data; 291 break; 292 case 4: 293 ret_val = *(u32 *)data->pending.raw_data; 294 break; 295 default: 296 ret_val = 0; 297 } 298 kfree(data->pending.raw_data); 299 300 err_free: 301 data->pending.status = false; 302 mutex_unlock(&data->mutex); 303 304 return ret_val; 305 } 306 EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); 307 308 int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, 309 u32 report_id, int field_index, u32 usage_id) 310 { 311 struct hid_report *report; 312 struct hid_field *field; 313 int i; 314 315 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 316 if (!report || (field_index >= report->maxfield)) 317 goto done_proc; 318 319 field = report->field[field_index]; 320 for (i = 0; i < field->maxusage; ++i) { 321 if (field->usage[i].hid == usage_id) 322 return field->usage[i].usage_index; 323 } 324 325 done_proc: 326 return -EINVAL; 327 } 328 EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); 329 330 int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, 331 u8 type, 332 u32 usage_id, 333 u32 attr_usage_id, 334 struct hid_sensor_hub_attribute_info *info) 335 { 336 int ret = -1; 337 int i; 338 struct hid_report *report; 339 struct hid_field *field; 340 struct hid_report_enum *report_enum; 341 struct hid_device *hdev = hsdev->hdev; 342 343 /* Initialize with defaults */ 344 info->usage_id = usage_id; 345 info->attrib_id = attr_usage_id; 346 info->report_id = -1; 347 info->index = -1; 348 info->units = -1; 349 info->unit_expo = -1; 350 351 report_enum = &hdev->report_enum[type]; 352 list_for_each_entry(report, &report_enum->report_list, list) { 353 for (i = 0; i < report->maxfield; ++i) { 354 field = report->field[i]; 355 if (field->maxusage) { 356 if (field->physical == usage_id && 357 (field->logical == attr_usage_id || 358 field->usage[0].hid == 359 attr_usage_id) && 360 (field->usage[0].collection_index >= 361 hsdev->start_collection_index) && 362 (field->usage[0].collection_index < 363 hsdev->end_collection_index)) { 364 365 sensor_hub_fill_attr_info(info, i, 366 report->id, 367 field); 368 ret = 0; 369 break; 370 } 371 } 372 } 373 374 } 375 376 return ret; 377 } 378 EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); 379 380 #ifdef CONFIG_PM 381 static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) 382 { 383 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 384 struct hid_sensor_hub_callbacks_list *callback; 385 unsigned long flags; 386 387 hid_dbg(hdev, " sensor_hub_suspend\n"); 388 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 389 list_for_each_entry(callback, &pdata->dyn_callback_list, list) { 390 if (callback->usage_callback->suspend) 391 callback->usage_callback->suspend( 392 callback->hsdev, callback->priv); 393 } 394 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 395 396 return 0; 397 } 398 399 static int sensor_hub_resume(struct hid_device *hdev) 400 { 401 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 402 struct hid_sensor_hub_callbacks_list *callback; 403 unsigned long flags; 404 405 hid_dbg(hdev, " sensor_hub_resume\n"); 406 spin_lock_irqsave(&pdata->dyn_callback_lock, flags); 407 list_for_each_entry(callback, &pdata->dyn_callback_list, list) { 408 if (callback->usage_callback->resume) 409 callback->usage_callback->resume( 410 callback->hsdev, callback->priv); 411 } 412 spin_unlock_irqrestore(&pdata->dyn_callback_lock, flags); 413 414 return 0; 415 } 416 417 static int sensor_hub_reset_resume(struct hid_device *hdev) 418 { 419 return 0; 420 } 421 #endif 422 423 /* 424 * Handle raw report as sent by device 425 */ 426 static int sensor_hub_raw_event(struct hid_device *hdev, 427 struct hid_report *report, u8 *raw_data, int size) 428 { 429 int i; 430 u8 *ptr; 431 int sz; 432 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 433 unsigned long flags; 434 struct hid_sensor_hub_callbacks *callback = NULL; 435 struct hid_collection *collection = NULL; 436 void *priv = NULL; 437 struct hid_sensor_hub_device *hsdev = NULL; 438 439 hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", 440 report->id, size, report->type); 441 hid_dbg(hdev, "maxfield:%d\n", report->maxfield); 442 if (report->type != HID_INPUT_REPORT) 443 return 1; 444 445 ptr = raw_data; 446 ptr++; /* Skip report id */ 447 448 spin_lock_irqsave(&pdata->lock, flags); 449 450 for (i = 0; i < report->maxfield; ++i) { 451 hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", 452 i, report->field[i]->usage->collection_index, 453 report->field[i]->usage->hid, 454 (report->field[i]->report_size * 455 report->field[i]->report_count)/8); 456 sz = (report->field[i]->report_size * 457 report->field[i]->report_count)/8; 458 if (pdata->pending.status && pdata->pending.attr_usage_id == 459 report->field[i]->usage->hid) { 460 hid_dbg(hdev, "data was pending ...\n"); 461 pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); 462 if (pdata->pending.raw_data) 463 pdata->pending.raw_size = sz; 464 else 465 pdata->pending.raw_size = 0; 466 complete(&pdata->pending.ready); 467 } 468 collection = &hdev->collection[ 469 report->field[i]->usage->collection_index]; 470 hid_dbg(hdev, "collection->usage %x\n", 471 collection->usage); 472 473 callback = sensor_hub_get_callback(hdev, 474 report->field[i]->physical, 475 report->field[i]->usage[0].collection_index, 476 &hsdev, &priv); 477 478 if (callback && callback->capture_sample) { 479 if (report->field[i]->logical) 480 callback->capture_sample(hsdev, 481 report->field[i]->logical, sz, ptr, 482 callback->pdev); 483 else 484 callback->capture_sample(hsdev, 485 report->field[i]->usage->hid, sz, ptr, 486 callback->pdev); 487 } 488 ptr += sz; 489 } 490 if (callback && collection && callback->send_event) 491 callback->send_event(hsdev, collection->usage, 492 callback->pdev); 493 spin_unlock_irqrestore(&pdata->lock, flags); 494 495 return 1; 496 } 497 498 int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) 499 { 500 int ret = 0; 501 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 502 503 mutex_lock(&data->mutex); 504 if (!data->ref_cnt) { 505 ret = hid_hw_open(hsdev->hdev); 506 if (ret) { 507 hid_err(hsdev->hdev, "failed to open hid device\n"); 508 mutex_unlock(&data->mutex); 509 return ret; 510 } 511 } 512 data->ref_cnt++; 513 mutex_unlock(&data->mutex); 514 515 return ret; 516 } 517 EXPORT_SYMBOL_GPL(sensor_hub_device_open); 518 519 void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) 520 { 521 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 522 523 mutex_lock(&data->mutex); 524 data->ref_cnt--; 525 if (!data->ref_cnt) 526 hid_hw_close(hsdev->hdev); 527 mutex_unlock(&data->mutex); 528 } 529 EXPORT_SYMBOL_GPL(sensor_hub_device_close); 530 531 static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, 532 unsigned int *rsize) 533 { 534 int index; 535 struct sensor_hub_data *sd = hid_get_drvdata(hdev); 536 unsigned char report_block[] = { 537 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; 538 unsigned char power_block[] = { 539 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; 540 541 if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { 542 hid_dbg(hdev, "No Enum quirks\n"); 543 return rdesc; 544 } 545 546 /* Looks for power and report state usage id and force to 1 */ 547 for (index = 0; index < *rsize; ++index) { 548 if (((*rsize - index) > sizeof(report_block)) && 549 !memcmp(&rdesc[index], report_block, 550 sizeof(report_block))) { 551 rdesc[index + 4] = 0x01; 552 index += sizeof(report_block); 553 } 554 if (((*rsize - index) > sizeof(power_block)) && 555 !memcmp(&rdesc[index], power_block, 556 sizeof(power_block))) { 557 rdesc[index + 4] = 0x01; 558 index += sizeof(power_block); 559 } 560 } 561 562 return rdesc; 563 } 564 565 static int sensor_hub_probe(struct hid_device *hdev, 566 const struct hid_device_id *id) 567 { 568 int ret; 569 struct sensor_hub_data *sd; 570 int i; 571 char *name; 572 int dev_cnt; 573 struct hid_sensor_hub_device *hsdev; 574 struct hid_sensor_hub_device *last_hsdev = NULL; 575 576 sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); 577 if (!sd) { 578 hid_err(hdev, "cannot allocate Sensor data\n"); 579 return -ENOMEM; 580 } 581 582 hid_set_drvdata(hdev, sd); 583 sd->quirks = id->driver_data; 584 585 spin_lock_init(&sd->lock); 586 spin_lock_init(&sd->dyn_callback_lock); 587 mutex_init(&sd->mutex); 588 ret = hid_parse(hdev); 589 if (ret) { 590 hid_err(hdev, "parse failed\n"); 591 return ret; 592 } 593 INIT_LIST_HEAD(&hdev->inputs); 594 595 ret = hid_hw_start(hdev, 0); 596 if (ret) { 597 hid_err(hdev, "hw start failed\n"); 598 return ret; 599 } 600 INIT_LIST_HEAD(&sd->dyn_callback_list); 601 sd->hid_sensor_client_cnt = 0; 602 603 dev_cnt = sensor_hub_get_physical_device_count(hdev); 604 if (dev_cnt > HID_MAX_PHY_DEVICES) { 605 hid_err(hdev, "Invalid Physical device count\n"); 606 ret = -EINVAL; 607 goto err_stop_hw; 608 } 609 sd->hid_sensor_hub_client_devs = devm_kzalloc(&hdev->dev, dev_cnt * 610 sizeof(struct mfd_cell), 611 GFP_KERNEL); 612 if (sd->hid_sensor_hub_client_devs == NULL) { 613 hid_err(hdev, "Failed to allocate memory for mfd cells\n"); 614 ret = -ENOMEM; 615 goto err_stop_hw; 616 } 617 618 for (i = 0; i < hdev->maxcollection; ++i) { 619 struct hid_collection *collection = &hdev->collection[i]; 620 621 if (collection->type == HID_COLLECTION_PHYSICAL) { 622 623 hsdev = devm_kzalloc(&hdev->dev, sizeof(*hsdev), 624 GFP_KERNEL); 625 if (!hsdev) { 626 hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); 627 ret = -ENOMEM; 628 goto err_stop_hw; 629 } 630 hsdev->hdev = hdev; 631 hsdev->vendor_id = hdev->vendor; 632 hsdev->product_id = hdev->product; 633 hsdev->start_collection_index = i; 634 if (last_hsdev) 635 last_hsdev->end_collection_index = i; 636 last_hsdev = hsdev; 637 name = devm_kasprintf(&hdev->dev, GFP_KERNEL, 638 "HID-SENSOR-%x", 639 collection->usage); 640 if (name == NULL) { 641 hid_err(hdev, "Failed MFD device name\n"); 642 ret = -ENOMEM; 643 goto err_stop_hw; 644 } 645 sd->hid_sensor_hub_client_devs[ 646 sd->hid_sensor_client_cnt].name = name; 647 sd->hid_sensor_hub_client_devs[ 648 sd->hid_sensor_client_cnt].platform_data = 649 hsdev; 650 sd->hid_sensor_hub_client_devs[ 651 sd->hid_sensor_client_cnt].pdata_size = 652 sizeof(*hsdev); 653 hid_dbg(hdev, "Adding %s:%d\n", name, 654 hsdev->start_collection_index); 655 sd->hid_sensor_client_cnt++; 656 } 657 } 658 if (last_hsdev) 659 last_hsdev->end_collection_index = i; 660 661 ret = mfd_add_hotplug_devices(&hdev->dev, 662 sd->hid_sensor_hub_client_devs, 663 sd->hid_sensor_client_cnt); 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