linux/drivers/hid/hid-sensor-hub.c
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   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/usb.h>
  22#include "usbhid/usbhid.h"
  23#include <linux/module.h>
  24#include <linux/slab.h>
  25#include <linux/mfd/core.h>
  26#include <linux/list.h>
  27#include <linux/hid-sensor-ids.h>
  28#include <linux/hid-sensor-hub.h>
  29#include "hid-ids.h"
  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 */
  40struct 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 */
  60struct sensor_hub_data {
  61        struct hid_sensor_hub_device *hsdev;
  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};
  70
  71/**
  72 * struct hid_sensor_hub_callbacks_list - Stores callback list
  73 * @list:               list head.
  74 * @usage_id:           usage id for a physical device.
  75 * @usage_callback:     Stores registered callback functions.
  76 * @priv:               Private data for a physical device.
  77 */
  78struct hid_sensor_hub_callbacks_list {
  79        struct list_head list;
  80        u32 usage_id;
  81        struct hid_sensor_hub_callbacks *usage_callback;
  82        void *priv;
  83};
  84
  85static int sensor_hub_check_for_sensor_page(struct hid_device *hdev)
  86{
  87        int i;
  88        int ret = -EINVAL;
  89
  90        for (i = 0; i < hdev->maxcollection; i++) {
  91                struct hid_collection *col = &hdev->collection[i];
  92                if (col->type == HID_COLLECTION_PHYSICAL &&
  93                   (col->usage & HID_USAGE_PAGE) == HID_UP_SENSOR) {
  94                        ret = 0;
  95                        break;
  96                }
  97        }
  98
  99        return ret;
 100}
 101
 102static struct hid_report *sensor_hub_report(int id, struct hid_device *hdev,
 103                                                int dir)
 104{
 105        struct hid_report *report;
 106
 107        list_for_each_entry(report, &hdev->report_enum[dir].report_list, list) {
 108                if (report->id == id)
 109                        return report;
 110        }
 111        hid_warn(hdev, "No report with id 0x%x found\n", id);
 112
 113        return NULL;
 114}
 115
 116static int sensor_hub_get_physical_device_count(
 117                                struct hid_report_enum *report_enum)
 118{
 119        struct hid_report *report;
 120        struct hid_field *field;
 121        int cnt = 0;
 122
 123        list_for_each_entry(report, &report_enum->report_list, list) {
 124                field = report->field[0];
 125                if (report->maxfield && field &&
 126                                        field->physical)
 127                        cnt++;
 128        }
 129
 130        return cnt;
 131}
 132
 133static void sensor_hub_fill_attr_info(
 134                struct hid_sensor_hub_attribute_info *info,
 135                s32 index, s32 report_id, s32 units, s32 unit_expo, s32 size)
 136{
 137        info->index = index;
 138        info->report_id = report_id;
 139        info->units = units;
 140        info->unit_expo = unit_expo;
 141        info->size = size/8;
 142}
 143
 144static struct hid_sensor_hub_callbacks *sensor_hub_get_callback(
 145                                        struct hid_device *hdev,
 146                                        u32 usage_id, void **priv)
 147{
 148        struct hid_sensor_hub_callbacks_list *callback;
 149        struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
 150
 151        spin_lock(&pdata->dyn_callback_lock);
 152        list_for_each_entry(callback, &pdata->dyn_callback_list, list)
 153                if (callback->usage_id == usage_id) {
 154                        *priv = callback->priv;
 155                        spin_unlock(&pdata->dyn_callback_lock);
 156                        return callback->usage_callback;
 157                }
 158        spin_unlock(&pdata->dyn_callback_lock);
 159
 160        return NULL;
 161}
 162
 163int sensor_hub_register_callback(struct hid_sensor_hub_device *hsdev,
 164                        u32 usage_id,
 165                        struct hid_sensor_hub_callbacks *usage_callback)
 166{
 167        struct hid_sensor_hub_callbacks_list *callback;
 168        struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev);
 169
 170        spin_lock(&pdata->dyn_callback_lock);
 171        list_for_each_entry(callback, &pdata->dyn_callback_list, list)
 172                if (callback->usage_id == usage_id) {
 173                        spin_unlock(&pdata->dyn_callback_lock);
 174                        return -EINVAL;
 175                }
 176        callback = kzalloc(sizeof(*callback), GFP_ATOMIC);
 177        if (!callback) {
 178                spin_unlock(&pdata->dyn_callback_lock);
 179                return -ENOMEM;
 180        }
 181        callback->usage_callback = usage_callback;
 182        callback->usage_id = usage_id;
 183        callback->priv = NULL;
 184        list_add_tail(&callback->list, &pdata->dyn_callback_list);
 185        spin_unlock(&pdata->dyn_callback_lock);
 186
 187        return 0;
 188}
 189EXPORT_SYMBOL_GPL(sensor_hub_register_callback);
 190
 191int sensor_hub_remove_callback(struct hid_sensor_hub_device *hsdev,
 192                                u32 usage_id)
 193{
 194        struct hid_sensor_hub_callbacks_list *callback;
 195        struct sensor_hub_data *pdata = hid_get_drvdata(hsdev->hdev);
 196
 197        spin_lock(&pdata->dyn_callback_lock);
 198        list_for_each_entry(callback, &pdata->dyn_callback_list, list)
 199                if (callback->usage_id == usage_id) {
 200                        list_del(&callback->list);
 201                        kfree(callback);
 202                        break;
 203                }
 204        spin_unlock(&pdata->dyn_callback_lock);
 205
 206        return 0;
 207}
 208EXPORT_SYMBOL_GPL(sensor_hub_remove_callback);
 209
 210int 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        usbhid_submit_report(hsdev->hdev, report, USB_DIR_OUT);
 225        usbhid_wait_io(hsdev->hdev);
 226
 227done_proc:
 228        mutex_unlock(&data->mutex);
 229
 230        return ret;
 231}
 232EXPORT_SYMBOL_GPL(sensor_hub_set_feature);
 233
 234int 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                ret = -EINVAL;
 245                goto done_proc;
 246        }
 247        usbhid_submit_report(hsdev->hdev, report, USB_DIR_IN);
 248        usbhid_wait_io(hsdev->hdev);
 249        *value = report->field[field_index]->value[0];
 250
 251done_proc:
 252        mutex_unlock(&data->mutex);
 253
 254        return ret;
 255}
 256EXPORT_SYMBOL_GPL(sensor_hub_get_feature);
 257
 258
 259int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
 260                                        u32 usage_id,
 261                                        u32 attr_usage_id, u32 report_id)
 262{
 263        struct sensor_hub_data *data =  hid_get_drvdata(hsdev->hdev);
 264        unsigned long flags;
 265        struct hid_report *report;
 266        int ret_val = 0;
 267
 268        mutex_lock(&data->mutex);
 269        memset(&data->pending, 0, sizeof(data->pending));
 270        init_completion(&data->pending.ready);
 271        data->pending.usage_id = usage_id;
 272        data->pending.attr_usage_id = attr_usage_id;
 273        data->pending.raw_size = 0;
 274
 275        spin_lock_irqsave(&data->lock, flags);
 276        data->pending.status = true;
 277        report = sensor_hub_report(report_id, hsdev->hdev, HID_INPUT_REPORT);
 278        if (!report) {
 279                spin_unlock_irqrestore(&data->lock, flags);
 280                goto err_free;
 281        }
 282        usbhid_submit_report(hsdev->hdev, report, USB_DIR_IN);
 283        spin_unlock_irqrestore(&data->lock, flags);
 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
 300err_free:
 301        data->pending.status = false;
 302        mutex_unlock(&data->mutex);
 303
 304        return ret_val;
 305}
 306EXPORT_SYMBOL_GPL(sensor_hub_input_attr_get_raw_value);
 307
 308int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
 309                                u8 type,
 310                                u32 usage_id,
 311                                u32 attr_usage_id,
 312                                struct hid_sensor_hub_attribute_info *info)
 313{
 314        int ret = -1;
 315        int i, j;
 316        int collection_index = -1;
 317        struct hid_report *report;
 318        struct hid_field *field;
 319        struct hid_report_enum *report_enum;
 320        struct hid_device *hdev = hsdev->hdev;
 321
 322        /* Initialize with defaults */
 323        info->usage_id = usage_id;
 324        info->attrib_id =  attr_usage_id;
 325        info->report_id = -1;
 326        info->index = -1;
 327        info->units = -1;
 328        info->unit_expo = -1;
 329
 330        for (i = 0; i < hdev->maxcollection; ++i) {
 331                struct hid_collection *collection = &hdev->collection[i];
 332                if (usage_id == collection->usage) {
 333                        collection_index = i;
 334                        break;
 335                }
 336        }
 337        if (collection_index == -1)
 338                goto err_ret;
 339
 340        report_enum = &hdev->report_enum[type];
 341        list_for_each_entry(report, &report_enum->report_list, list) {
 342                for (i = 0; i < report->maxfield; ++i) {
 343                        field = report->field[i];
 344                        if (field->physical == usage_id &&
 345                                field->logical == attr_usage_id) {
 346                                sensor_hub_fill_attr_info(info, i, report->id,
 347                                        field->unit, field->unit_exponent,
 348                                        field->report_size);
 349                                ret = 0;
 350                        } else {
 351                                for (j = 0; j < field->maxusage; ++j) {
 352                                        if (field->usage[j].hid ==
 353                                        attr_usage_id &&
 354                                        field->usage[j].collection_index ==
 355                                        collection_index)  {
 356                                                sensor_hub_fill_attr_info(info,
 357                                                        i, report->id,
 358                                                        field->unit,
 359                                                        field->unit_exponent,
 360                                                        field->report_size);
 361                                                ret = 0;
 362                                                break;
 363                                        }
 364                                }
 365                        }
 366                        if (ret == 0)
 367                                break;
 368                }
 369        }
 370
 371err_ret:
 372        return ret;
 373}
 374EXPORT_SYMBOL_GPL(sensor_hub_input_get_attribute_info);
 375
 376#ifdef CONFIG_PM
 377static 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                                        pdata->hsdev, callback->priv);
 388        }
 389        spin_unlock(&pdata->dyn_callback_lock);
 390
 391        return 0;
 392}
 393
 394static 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                                        pdata->hsdev, callback->priv);
 405        }
 406        spin_unlock(&pdata->dyn_callback_lock);
 407
 408        return 0;
 409}
 410
 411static int sensor_hub_reset_resume(struct hid_device *hdev)
 412{
 413        return 0;
 414}
 415#endif
 416/*
 417 * Handle raw report as sent by device
 418 */
 419static int sensor_hub_raw_event(struct hid_device *hdev,
 420                struct hid_report *report, u8 *raw_data, int size)
 421{
 422        int i;
 423        u8 *ptr;
 424        int sz;
 425        struct sensor_hub_data *pdata = hid_get_drvdata(hdev);
 426        unsigned long flags;
 427        struct hid_sensor_hub_callbacks *callback = NULL;
 428        struct hid_collection *collection = NULL;
 429        void *priv = NULL;
 430
 431        hid_dbg(hdev, "sensor_hub_raw_event report id:0x%x size:%d type:%d\n",
 432                         report->id, size, report->type);
 433        hid_dbg(hdev, "maxfield:%d\n", report->maxfield);
 434        if (report->type != HID_INPUT_REPORT)
 435                return 1;
 436
 437        ptr = raw_data;
 438        ptr++; /*Skip report id*/
 439
 440        if (!report)
 441                goto err_report;
 442
 443        spin_lock_irqsave(&pdata->lock, flags);
 444
 445        for (i = 0; i < report->maxfield; ++i) {
 446
 447                hid_dbg(hdev, "%d collection_index:%x hid:%x sz:%x\n",
 448                                i, report->field[i]->usage->collection_index,
 449                                report->field[i]->usage->hid,
 450                                report->field[i]->report_size/8);
 451
 452                sz = report->field[i]->report_size/8;
 453                if (pdata->pending.status && pdata->pending.attr_usage_id ==
 454                                report->field[i]->usage->hid) {
 455                        hid_dbg(hdev, "data was pending ...\n");
 456                        pdata->pending.raw_data = kmalloc(sz, GFP_ATOMIC);
 457                        if (pdata->pending.raw_data) {
 458                                memcpy(pdata->pending.raw_data, ptr, sz);
 459                                pdata->pending.raw_size  = sz;
 460                        } else
 461                                pdata->pending.raw_size = 0;
 462                        complete(&pdata->pending.ready);
 463                }
 464                collection = &hdev->collection[
 465                                report->field[i]->usage->collection_index];
 466                hid_dbg(hdev, "collection->usage %x\n",
 467                                        collection->usage);
 468                callback = sensor_hub_get_callback(pdata->hsdev->hdev,
 469                                                report->field[i]->physical,
 470                                                        &priv);
 471                if (callback && callback->capture_sample) {
 472                        if (report->field[i]->logical)
 473                                callback->capture_sample(pdata->hsdev,
 474                                        report->field[i]->logical, sz, ptr,
 475                                        callback->pdev);
 476                        else
 477                                callback->capture_sample(pdata->hsdev,
 478                                        report->field[i]->usage->hid, sz, ptr,
 479                                        callback->pdev);
 480                }
 481                ptr += sz;
 482        }
 483        if (callback && collection && callback->send_event)
 484                callback->send_event(pdata->hsdev, collection->usage,
 485                                callback->pdev);
 486        spin_unlock_irqrestore(&pdata->lock, flags);
 487
 488err_report:
 489        return 1;
 490}
 491
 492static int sensor_hub_probe(struct hid_device *hdev,
 493                                const struct hid_device_id *id)
 494{
 495        int ret;
 496        struct sensor_hub_data *sd;
 497        int i;
 498        char *name;
 499        struct hid_report *report;
 500        struct hid_report_enum *report_enum;
 501        struct hid_field *field;
 502        int dev_cnt;
 503
 504        sd = kzalloc(sizeof(struct sensor_hub_data), GFP_KERNEL);
 505        if (!sd) {
 506                hid_err(hdev, "cannot allocate Sensor data\n");
 507                return -ENOMEM;
 508        }
 509        sd->hsdev = kzalloc(sizeof(struct hid_sensor_hub_device), GFP_KERNEL);
 510        if (!sd->hsdev) {
 511                hid_err(hdev, "cannot allocate hid_sensor_hub_device\n");
 512                ret = -ENOMEM;
 513                goto err_free_hub;
 514        }
 515        hid_set_drvdata(hdev, sd);
 516        sd->hsdev->hdev = hdev;
 517        sd->hsdev->vendor_id = hdev->vendor;
 518        sd->hsdev->product_id = hdev->product;
 519        spin_lock_init(&sd->lock);
 520        spin_lock_init(&sd->dyn_callback_lock);
 521        mutex_init(&sd->mutex);
 522        ret = hid_parse(hdev);
 523        if (ret) {
 524                hid_err(hdev, "parse failed\n");
 525                goto err_free;
 526        }
 527        if (sensor_hub_check_for_sensor_page(hdev) < 0) {
 528                hid_err(hdev, "sensor page not found\n");
 529                goto err_free;
 530        }
 531        INIT_LIST_HEAD(&hdev->inputs);
 532
 533        ret = hid_hw_start(hdev, 0);
 534        if (ret) {
 535                hid_err(hdev, "hw start failed\n");
 536                goto err_free;
 537        }
 538        ret = hid_hw_open(hdev);
 539        if (ret) {
 540                hid_err(hdev, "failed to open input interrupt pipe\n");
 541                goto err_stop_hw;
 542        }
 543
 544        INIT_LIST_HEAD(&sd->dyn_callback_list);
 545        sd->hid_sensor_client_cnt = 0;
 546        report_enum = &hdev->report_enum[HID_INPUT_REPORT];
 547
 548        dev_cnt = sensor_hub_get_physical_device_count(report_enum);
 549        if (dev_cnt > HID_MAX_PHY_DEVICES) {
 550                hid_err(hdev, "Invalid Physical device count\n");
 551                ret = -EINVAL;
 552                goto err_close;
 553        }
 554        sd->hid_sensor_hub_client_devs = kzalloc(dev_cnt *
 555                                                sizeof(struct mfd_cell),
 556                                                GFP_KERNEL);
 557        if (sd->hid_sensor_hub_client_devs == NULL) {
 558                hid_err(hdev, "Failed to allocate memory for mfd cells\n");
 559                        ret = -ENOMEM;
 560                        goto err_close;
 561        }
 562        list_for_each_entry(report, &report_enum->report_list, list) {
 563                hid_dbg(hdev, "Report id:%x\n", report->id);
 564                field = report->field[0];
 565                if (report->maxfield && field &&
 566                                        field->physical) {
 567                        name = kasprintf(GFP_KERNEL, "HID-SENSOR-%x",
 568                                                field->physical);
 569                        if (name  == NULL) {
 570                                hid_err(hdev, "Failed MFD device name\n");
 571                                        ret = -ENOMEM;
 572                                        goto err_free_names;
 573                        }
 574                        sd->hid_sensor_hub_client_devs[
 575                                sd->hid_sensor_client_cnt].name = name;
 576                        sd->hid_sensor_hub_client_devs[
 577                                sd->hid_sensor_client_cnt].platform_data =
 578                                                sd->hsdev;
 579                        sd->hid_sensor_hub_client_devs[
 580                                sd->hid_sensor_client_cnt].pdata_size =
 581                                                sizeof(*sd->hsdev);
 582                        hid_dbg(hdev, "Adding %s:%p\n", name, sd);
 583                        sd->hid_sensor_client_cnt++;
 584                }
 585        }
 586        ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs,
 587                sd->hid_sensor_client_cnt, NULL, 0, NULL);
 588        if (ret < 0)
 589                goto err_free_names;
 590
 591        return ret;
 592
 593err_free_names:
 594        for (i = 0; i < sd->hid_sensor_client_cnt ; ++i)
 595                kfree(sd->hid_sensor_hub_client_devs[i].name);
 596        kfree(sd->hid_sensor_hub_client_devs);
 597err_close:
 598        hid_hw_close(hdev);
 599err_stop_hw:
 600        hid_hw_stop(hdev);
 601err_free:
 602        kfree(sd->hsdev);
 603err_free_hub:
 604        kfree(sd);
 605
 606        return ret;
 607}
 608
 609static void sensor_hub_remove(struct hid_device *hdev)
 610{
 611        struct sensor_hub_data *data = hid_get_drvdata(hdev);
 612        unsigned long flags;
 613        int i;
 614
 615        hid_dbg(hdev, " hardware removed\n");
 616        hid_hw_close(hdev);
 617        hid_hw_stop(hdev);
 618        spin_lock_irqsave(&data->lock, flags);
 619        if (data->pending.status)
 620                complete(&data->pending.ready);
 621        spin_unlock_irqrestore(&data->lock, flags);
 622        mfd_remove_devices(&hdev->dev);
 623        for (i = 0; i < data->hid_sensor_client_cnt ; ++i)
 624                kfree(data->hid_sensor_hub_client_devs[i].name);
 625        kfree(data->hid_sensor_hub_client_devs);
 626        hid_set_drvdata(hdev, NULL);
 627        mutex_destroy(&data->mutex);
 628        kfree(data->hsdev);
 629        kfree(data);
 630}
 631
 632static const struct hid_device_id sensor_hub_devices[] = {
 633        { HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8086,
 634                        USB_DEVICE_ID_SENSOR_HUB_1020) },
 635        { HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8087,
 636                        USB_DEVICE_ID_SENSOR_HUB_1020) },
 637        { HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8086,
 638                        USB_DEVICE_ID_SENSOR_HUB_09FA) },
 639        { HID_USB_DEVICE(USB_VENDOR_ID_INTEL_8087,
 640                        USB_DEVICE_ID_SENSOR_HUB_09FA) },
 641        { HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
 642                        USB_DEVICE_ID_SENSOR_HUB_7014) },
 643        { }
 644};
 645MODULE_DEVICE_TABLE(hid, sensor_hub_devices);
 646
 647static const struct hid_usage_id sensor_hub_grabbed_usages[] = {
 648        { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
 649        { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1 }
 650};
 651
 652static struct hid_driver sensor_hub_driver = {
 653        .name = "hid-sensor-hub",
 654        .id_table = sensor_hub_devices,
 655        .probe = sensor_hub_probe,
 656        .remove = sensor_hub_remove,
 657        .raw_event = sensor_hub_raw_event,
 658#ifdef CONFIG_PM
 659        .suspend = sensor_hub_suspend,
 660        .resume =  sensor_hub_resume,
 661        .reset_resume =  sensor_hub_reset_resume,
 662#endif
 663};
 664
 665static int __init sensor_hub_init(void)
 666{
 667        return hid_register_driver(&sensor_hub_driver);
 668}
 669
 670static void __exit sensor_hub_exit(void)
 671{
 672        hid_unregister_driver(&sensor_hub_driver);
 673}
 674
 675module_init(sensor_hub_init);
 676module_exit(sensor_hub_exit);
 677
 678MODULE_DESCRIPTION("HID Sensor Hub driver");
 679MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
 680MODULE_LICENSE("GPL");
 681
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