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); 162 163 spin_lock(&pdata->dyn_callback_lock); 164 list_for_each_entry(callback, &pdata->dyn_callback_list, list) 165 if (callback->usage_id == usage_id && 166 callback->hsdev == hsdev) { 167 spin_unlock(&pdata->dyn_callback_lock); 168 return -EINVAL; 169 } 170 callback = kzalloc(sizeof(*callback), GFP_ATOMIC); 171 if (!callback) { 172 spin_unlock(&pdata->dyn_callback_lock); 173 return -ENOMEM; 174 } 175 callback->hsdev = hsdev; 176 callback->usage_callback = usage_callback; 177 callback->usage_id = usage_id; 178 callback->priv = NULL; 179 list_add_tail(&callback->list, &pdata->dyn_callback_list); 180 spin_unlock(&pdata->dyn_callback_lock); 181 182 return 0; 183 } 184 EXPORT_SYMBOL_GPL(sensor_hub_register_callback); 185 186 int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev, 187 u32 usage_id) 188 { 189 struct hid_sensor_hub_callbacks_list *callback; 190 struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev); 191 192 spin_lock(&pdata->dyn_callback_lock); 193 list_for_each_entry(callback, &pdata->dyn_callback_list, list) 194 if (callback->usage_id == usage_id && 195 callback->hsdev == hsdev) { 196 list_del(&callback->list); 197 kfree(callback); 198 break; 199 } 200 spin_unlock(&pdata->dyn_callback_lock); 201 202 return 0; 203 } 204 EXPORT_SYMBOL_GPL(sensor_hub_remove_callback); 205 206 int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, 207 u32 field_index, s32 value) 208 { 209 struct hid_report *report; 210 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 211 int ret = 0; 212 213 mutex_lock(&data->mutex); 214 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 215 if (!report || (field_index >= report->maxfield)) { 216 ret = -EINVAL; 217 goto done_proc; 218 } 219 hid_set_field(report->field[field_index], 0, value); 220 hid_hw_request(hsdev->hdev, report, HID_REQ_SET_REPORT); 221 hid_hw_wait(hsdev->hdev); 222 223 done_proc: 224 mutex_unlock(&data->mutex); 225 226 return ret; 227 } 228 EXPORT_SYMBOL_GPL(sensor_hub_set_feature); 229 230 int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, 231 u32 field_index, s32 *value) 232 { 233 struct hid_report *report; 234 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 235 int ret = 0; 236 237 mutex_lock(&data->mutex); 238 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 239 if (!report || (field_index >= report->maxfield) || 240 report->field[field_index]->report_count < 1) { 241 ret = -EINVAL; 242 goto done_proc; 243 } 244 hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); 245 hid_hw_wait(hsdev->hdev); 246 *value = report->field[field_index]->value[0]; 247 248 done_proc: 249 mutex_unlock(&data->mutex); 250 251 return ret; 252 } 253 EXPORT_SYMBOL_GPL(sensor_hub_get_feature); 254 255 256 int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev, 257 u32 usage_id, 258 u32 attr_usage_id, u32 report_id) 259 { 260 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 261 unsigned long flags; 262 struct hid_report *report; 263 int ret_val = 0; 264 265 mutex_lock(&data->mutex); 266 memset(&data->pending, 0, sizeof(data->pending)); 267 init_completion(&data->pending.ready); 268 data->pending.usage_id = usage_id; 269 data->pending.attr_usage_id = attr_usage_id; 270 data->pending.raw_size = 0; 271 272 spin_lock_irqsave(&data->lock, flags); 273 data->pending.status = true; 274 spin_unlock_irqrestore(&data->lock, flags); 275 report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT); 276 if (!report) 277 goto err_free; 278 279 hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT); 280 wait_for_completion_interruptible_timeout(&data->pending.ready, HZ*5); 281 switch (data->pending.raw_size) { 282 case 1: 283 ret_val = *(u8 *)data->pending.raw_data; 284 break; 285 case 2: 286 ret_val = *(u16 *)data->pending.raw_data; 287 break; 288 case 4: 289 ret_val = *(u32 *)data->pending.raw_data; 290 break; 291 default: 292 ret_val = 0; 293 } 294 kfree(data->pending.raw_data); 295 296 err_free: 297 data->pending.status = false; 298 mutex_unlock(&data->mutex); 299 300 return ret_val; 301 } 302 EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value); 303 304 int hid_sensor_get_usage_index(struct hid_sensor_hub_device *hsdev, 305 u32 report_id, int field_index, u32 usage_id) 306 { 307 struct hid_report *report; 308 struct hid_field *field; 309 int i; 310 311 report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); 312 if (!report || (field_index >= report->maxfield)) 313 goto done_proc; 314 315 field = report->field[field_index]; 316 for (i = 0; i < field->maxusage; ++i) { 317 if (field->usage[i].hid == usage_id) 318 return field->usage[i].usage_index; 319 } 320 321 done_proc: 322 return -EINVAL; 323 } 324 EXPORT_SYMBOL_GPL(hid_sensor_get_usage_index); 325 326 int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev, 327 u8 type, 328 u32 usage_id, 329 u32 attr_usage_id, 330 struct hid_sensor_hub_attribute_info *info) 331 { 332 int ret = -1; 333 int i; 334 struct hid_report *report; 335 struct hid_field *field; 336 struct hid_report_enum *report_enum; 337 struct hid_device *hdev = hsdev->hdev; 338 339 /* Initialize with defaults */ 340 info->usage_id = usage_id; 341 info->attrib_id = attr_usage_id; 342 info->report_id = -1; 343 info->index = -1; 344 info->units = -1; 345 info->unit_expo = -1; 346 347 report_enum = &hdev->report_enum[type]; 348 list_for_each_entry(report, &report_enum->report_list, list) { 349 for (i = 0; i < report->maxfield; ++i) { 350 field = report->field[i]; 351 if (field->maxusage) { 352 if (field->physical == usage_id && 353 (field->logical == attr_usage_id || 354 field->usage[0].hid == 355 attr_usage_id) && 356 (field->usage[0].collection_index >= 357 hsdev->start_collection_index) && 358 (field->usage[0].collection_index < 359 hsdev->end_collection_index)) { 360 361 sensor_hub_fill_attr_info(info, i, 362 report->id, 363 field); 364 ret = 0; 365 break; 366 } 367 } 368 } 369 370 } 371 372 return ret; 373 } 374 EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info); 375 376 #ifdef CONFIG_PM 377 static int sensor_hub_suspend(struct hid_device *hdev, pm_message_t message) 378 { 379 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 380 struct hid_sensor_hub_callbacks_list *callback; 381 382 hid_dbg(hdev, " sensor_hub_suspend\n"); 383 spin_lock(&pdata->dyn_callback_lock); 384 list_for_each_entry(callback, &pdata->dyn_callback_list, list) { 385 if (callback->usage_callback->suspend) 386 callback->usage_callback->suspend( 387 callback->hsdev, callback->priv); 388 } 389 spin_unlock(&pdata->dyn_callback_lock); 390 391 return 0; 392 } 393 394 static int sensor_hub_resume(struct hid_device *hdev) 395 { 396 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 397 struct hid_sensor_hub_callbacks_list *callback; 398 399 hid_dbg(hdev, " sensor_hub_resume\n"); 400 spin_lock(&pdata->dyn_callback_lock); 401 list_for_each_entry(callback, &pdata->dyn_callback_list, list) { 402 if (callback->usage_callback->resume) 403 callback->usage_callback->resume( 404 callback->hsdev, callback->priv); 405 } 406 spin_unlock(&pdata->dyn_callback_lock); 407 408 return 0; 409 } 410 411 static int sensor_hub_reset_resume(struct hid_device *hdev) 412 { 413 return 0; 414 } 415 #endif 416 417 /* 418 * Handle raw report as sent by device 419 */ 420 static int sensor_hub_raw_event(struct hid_device *hdev, 421 struct hid_report *report, u8 *raw_data, int size) 422 { 423 int i; 424 u8 *ptr; 425 int sz; 426 struct sensor_hub_data *pdata = hid_get_drvdata(hdev); 427 unsigned long flags; 428 struct hid_sensor_hub_callbacks *callback = NULL; 429 struct hid_collection *collection = NULL; 430 void *priv = NULL; 431 struct hid_sensor_hub_device *hsdev = NULL; 432 433 hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n", 434 report->id, size, report->type); 435 hid_dbg(hdev, "maxfield:%d\n", report->maxfield); 436 if (report->type != HID_INPUT_REPORT) 437 return 1; 438 439 ptr = raw_data; 440 ptr++; /* Skip report id */ 441 442 spin_lock_irqsave(&pdata->lock, flags); 443 444 for (i = 0; i < report->maxfield; ++i) { 445 hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n", 446 i, report->field[i]->usage->collection_index, 447 report->field[i]->usage->hid, 448 (report->field[i]->report_size * 449 report->field[i]->report_count)/8); 450 sz = (report->field[i]->report_size * 451 report->field[i]->report_count)/8; 452 if (pdata->pending.status && pdata->pending.attr_usage_id == 453 report->field[i]->usage->hid) { 454 hid_dbg(hdev, "data was pending ...\n"); 455 pdata->pending.raw_data = kmemdup(ptr, sz, GFP_ATOMIC); 456 if (pdata->pending.raw_data) 457 pdata->pending.raw_size = sz; 458 else 459 pdata->pending.raw_size = 0; 460 complete(&pdata->pending.ready); 461 } 462 collection = &hdev->collection[ 463 report->field[i]->usage->collection_index]; 464 hid_dbg(hdev, "collection->usage %x\n", 465 collection->usage); 466 467 callback = sensor_hub_get_callback(hdev, 468 report->field[i]->physical, 469 report->field[i]->usage[0].collection_index, 470 &hsdev, &priv); 471 472 if (callback && callback->capture_sample) { 473 if (report->field[i]->logical) 474 callback->capture_sample(hsdev, 475 report->field[i]->logical, sz, ptr, 476 callback->pdev); 477 else 478 callback->capture_sample(hsdev, 479 report->field[i]->usage->hid, sz, ptr, 480 callback->pdev); 481 } 482 ptr += sz; 483 } 484 if (callback && collection && callback->send_event) 485 callback->send_event(hsdev, collection->usage, 486 callback->pdev); 487 spin_unlock_irqrestore(&pdata->lock, flags); 488 489 return 1; 490 } 491 492 int sensor_hub_device_open(struct hid_sensor_hub_device *hsdev) 493 { 494 int ret = 0; 495 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 496 497 mutex_lock(&data->mutex); 498 if (!data->ref_cnt) { 499 ret = hid_hw_open(hsdev->hdev); 500 if (ret) { 501 hid_err(hsdev->hdev, "failed to open hid device\n"); 502 mutex_unlock(&data->mutex); 503 return ret; 504 } 505 } 506 data->ref_cnt++; 507 mutex_unlock(&data->mutex); 508 509 return ret; 510 } 511 EXPORT_SYMBOL_GPL(sensor_hub_device_open); 512 513 void sensor_hub_device_close(struct hid_sensor_hub_device *hsdev) 514 { 515 struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev); 516 517 mutex_lock(&data->mutex); 518 data->ref_cnt--; 519 if (!data->ref_cnt) 520 hid_hw_close(hsdev->hdev); 521 mutex_unlock(&data->mutex); 522 } 523 EXPORT_SYMBOL_GPL(sensor_hub_device_close); 524 525 static __u8 *sensor_hub_report_fixup(struct hid_device *hdev, __u8 *rdesc, 526 unsigned int *rsize) 527 { 528 int index; 529 struct sensor_hub_data *sd = hid_get_drvdata(hdev); 530 unsigned char report_block[] = { 531 0x0a, 0x16, 0x03, 0x15, 0x00, 0x25, 0x05}; 532 unsigned char power_block[] = { 533 0x0a, 0x19, 0x03, 0x15, 0x00, 0x25, 0x05}; 534 535 if (!(sd->quirks & HID_SENSOR_HUB_ENUM_QUIRK)) { 536 hid_dbg(hdev, "No Enum quirks\n"); 537 return rdesc; 538 } 539 540 /* Looks for power and report state usage id and force to 1 */ 541 for (index = 0; index < *rsize; ++index) { 542 if (((*rsize - index) > sizeof(report_block)) && 543 !memcmp(&rdesc[index], report_block, 544 sizeof(report_block))) { 545 rdesc[index + 4] = 0x01; 546 index += sizeof(report_block); 547 } 548 if (((*rsize - index) > sizeof(power_block)) && 549 !memcmp(&rdesc[index], power_block, 550 sizeof(power_block))) { 551 rdesc[index + 4] = 0x01; 552 index += sizeof(power_block); 553 } 554 } 555 556 return rdesc; 557 } 558 559 static int sensor_hub_probe(struct hid_device *hdev, 560 const struct hid_device_id *id) 561 { 562 int ret; 563 struct sensor_hub_data *sd; 564 int i; 565 char *name; 566 int dev_cnt; 567 struct hid_sensor_hub_device *hsdev; 568 struct hid_sensor_hub_device *last_hsdev = NULL; 569 570 sd = devm_kzalloc(&hdev->dev, sizeof(*sd), GFP_KERNEL); 571 if (!sd) { 572 hid_err(hdev, "cannot allocate Sensor data\n"); 573 return -ENOMEM; 574 } 575 576 hid_set_drvdata(hdev, sd); 577 sd->quirks = id->driver_data; 578 579 spin_lock_init(&sd->lock); 580 spin_lock_init(&sd->dyn_callback_lock); 581 mutex_init(&sd->mutex); 582 ret = hid_parse(hdev); 583 if (ret) { 584 hid_err(hdev, "parse failed\n"); 585 return ret; 586 } 587 INIT_LIST_HEAD(&hdev->inputs); 588 589 ret = hid_hw_start(hdev, 0); 590 if (ret) { 591 hid_err(hdev, "hw start failed\n"); 592 return ret; 593 } 594 INIT_LIST_HEAD(&sd->dyn_callback_list); 595 sd->hid_sensor_client_cnt = 0; 596 597 dev_cnt = sensor_hub_get_physical_device_count(hdev); 598 if (dev_cnt > HID_MAX_PHY_DEVICES) { 599 hid_err(hdev, "Invalid Physical device count\n"); 600 ret = -EINVAL; 601 goto err_stop_hw; 602 } 603 sd->hid_sensor_hub_client_devs = kzalloc(dev_cnt * 604 sizeof(struct mfd_cell), 605 GFP_KERNEL); 606 if (sd->hid_sensor_hub_client_devs == NULL) { 607 hid_err(hdev, "Failed to allocate memory for mfd cells\n"); 608 ret = -ENOMEM; 609 goto err_stop_hw; 610 } 611 612 for (i = 0; i < hdev->maxcollection; ++i) { 613 struct hid_collection *collection = &hdev->collection[i]; 614 615 if (collection->type == HID_COLLECTION_PHYSICAL) { 616 617 hsdev = kzalloc(sizeof(*hsdev), GFP_KERNEL); 618 if (!hsdev) { 619 hid_err(hdev, "cannot allocate hid_sensor_hub_device\n"); 620 ret = -ENOMEM; 621 goto err_no_mem; 622 } 623 hsdev->hdev = hdev; 624 hsdev->vendor_id = hdev->vendor; 625 hsdev->product_id = hdev->product; 626 hsdev->start_collection_index = i; 627 if (last_hsdev) 628 last_hsdev->end_collection_index = i; 629 last_hsdev = hsdev; 630 name = kasprintf(GFP_KERNEL, "HID-SENSOR-%x", 631 collection->usage); 632 if (name == NULL) { 633 hid_err(hdev, "Failed MFD device name\n"); 634 ret = -ENOMEM; 635 goto err_no_mem; 636 } 637 sd->hid_sensor_hub_client_devs[ 638 sd->hid_sensor_client_cnt].id = 639 PLATFORM_DEVID_AUTO; 640 sd->hid_sensor_hub_client_devs[ 641 sd->hid_sensor_client_cnt].name = name; 642 sd->hid_sensor_hub_client_devs[ 643 sd->hid_sensor_client_cnt].platform_data = 644 hsdev; 645 sd->hid_sensor_hub_client_devs[ 646 sd->hid_sensor_client_cnt].pdata_size = 647 sizeof(*hsdev); 648 hid_dbg(hdev, "Adding %s:%d\n", name, 649 hsdev->start_collection_index); 650 sd->hid_sensor_client_cnt++; 651 } 652 } 653 if (last_hsdev) 654 last_hsdev->end_collection_index = i; 655 656 ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs, 657 sd->hid_sensor_client_cnt, NULL, 0, NULL); 658 if (ret < 0) 659 goto err_no_mem; 660 661 return ret; 662 663 err_no_mem: 664 for (i = 0; i < sd->hid_sensor_client_cnt; ++i) { 665 kfree(sd->hid_sensor_hub_client_devs[i].name); 666 kfree(sd->hid_sensor_hub_client_devs[i].platform_data); 667 } 668 kfree(sd->hid_sensor_hub_client_devs); 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 int i; 680 681 hid_dbg(hdev, " hardware removed\n"); 682 hid_hw_close(hdev); 683 hid_hw_stop(hdev); 684 spin_lock_irqsave(&data->lock, flags); 685 if (data->pending.status) 686 complete(&data->pending.ready); 687 spin_unlock_irqrestore(&data->lock, flags); 688 mfd_remove_devices(&hdev->dev); 689 for (i = 0; i < data->hid_sensor_client_cnt; ++i) { 690 kfree(data->hid_sensor_hub_client_devs[i].name); 691 kfree(data->hid_sensor_hub_client_devs[i].platform_data); 692 } 693 kfree(data->hid_sensor_hub_client_devs); 694 hid_set_drvdata(hdev, NULL); 695 mutex_destroy(&data->mutex); 696 } 697 698 static const struct hid_device_id sensor_hub_devices[] = { 699 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_0, 700 USB_DEVICE_ID_INTEL_HID_SENSOR_0), 701 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 702 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, 703 USB_DEVICE_ID_INTEL_HID_SENSOR_0), 704 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 705 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_INTEL_1, 706 USB_DEVICE_ID_INTEL_HID_SENSOR_1), 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_SURFACE_PRO_2), 710 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 711 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, 712 USB_DEVICE_ID_MS_TOUCH_COVER_2), 713 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 714 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_MICROSOFT, 715 USB_DEVICE_ID_MS_TYPE_COVER_2), 716 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 717 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_STM_0, 718 USB_DEVICE_ID_STM_HID_SENSOR_1), 719 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 720 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, USB_VENDOR_ID_TEXAS_INSTRUMENTS, 721 USB_DEVICE_ID_TEXAS_INSTRUMENTS_LENOVO_YOGA), 722 .driver_data = HID_SENSOR_HUB_ENUM_QUIRK}, 723 { HID_DEVICE(HID_BUS_ANY, HID_GROUP_SENSOR_HUB, HID_ANY_ID, 724 HID_ANY_ID) }, 725 { } 726 }; 727 MODULE_DEVICE_TABLE(hid, sensor_hub_devices); 728 729 static struct hid_driver sensor_hub_driver = { 730 .name = "hid-sensor-hub", 731 .id_table = sensor_hub_devices, 732 .probe = sensor_hub_probe, 733 .remove = sensor_hub_remove, 734 .raw_event = sensor_hub_raw_event, 735 .report_fixup = sensor_hub_report_fixup, 736 #ifdef CONFIG_PM 737 .suspend = sensor_hub_suspend, 738 .resume = sensor_hub_resume, 739 .reset_resume = sensor_hub_reset_resume, 740 #endif 741 }; 742 module_hid_driver(sensor_hub_driver); 743 744 MODULE_DESCRIPTION("HID Sensor Hub driver"); 745 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>"); 746 MODULE_LICENSE("GPL"); 747