drivers/hid/hid-logitech-hidpp.c

   1 /*
   2  *  HIDPP protocol for Logitech Unifying receivers
   3  *
   4  *  Copyright (c) 2011 Logitech (c)
   5  *  Copyright (c) 2012-2013 Google (c)
   6  *  Copyright (c) 2013-2014 Red Hat Inc.
   7  */
   8
   9 /*
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the Free
  12  * Software Foundation; version 2 of the License.
  13  */
  14
  15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  16
  17 #include <linux/device.h>
  18 #include <linux/hid.h>
  19 #include <linux/module.h>
  20 #include <linux/slab.h>
  21 #include <linux/sched.h>
  22 #include <linux/kfifo.h>
  23 #include <linux/input/mt.h>
  24 #include <asm/unaligned.h>
  25 #include "hid-ids.h"
  26
  27 MODULE_LICENSE("GPL");
  28 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  29 MODULE_AUTHOR("Nestor Lopez Casado <nlopezcasad@logitech.com>");
  30
  31 #define REPORT_ID_HIDPP_SHORT                   0x10
  32 #define REPORT_ID_HIDPP_LONG                    0x11
  33
  34 #define HIDPP_REPORT_SHORT_LENGTH               7
  35 #define HIDPP_REPORT_LONG_LENGTH                20
  36
  37 #define HIDPP_QUIRK_CLASS_WTP                   BIT(0)
  38
  39 /* bits 1..20 are reserved for classes */
  40 #define HIDPP_QUIRK_DELAYED_INIT                BIT(21)
  41 #define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS        BIT(22)
  42 #define HIDPP_QUIRK_MULTI_INPUT                 BIT(23)
  43
  44 /*
  45  * There are two hidpp protocols in use, the first version hidpp10 is known
  46  * as register access protocol or RAP, the second version hidpp20 is known as
  47  * feature access protocol or FAP
  48  *
  49  * Most older devices (including the Unifying usb receiver) use the RAP protocol
  50  * where as most newer devices use the FAP protocol. Both protocols are
  51  * compatible with the underlying transport, which could be usb, Unifiying, or
  52  * bluetooth. The message lengths are defined by the hid vendor specific report
  53  * descriptor for the HIDPP_SHORT report type (total message lenth 7 bytes) and
  54  * the HIDPP_LONG report type (total message length 20 bytes)
  55  *
  56  * The RAP protocol uses both report types, whereas the FAP only uses HIDPP_LONG
  57  * messages. The Unifying receiver itself responds to RAP messages (device index
  58  * is 0xFF for the receiver), and all messages (short or long) with a device
  59  * index between 1 and 6 are passed untouched to the corresponding paired
  60  * Unifying device.
  61  *
  62  * The paired device can be RAP or FAP, it will receive the message untouched
  63  * from the Unifiying receiver.
  64  */
  65
  66 struct fap {
  67         u8 feature_index;
  68         u8 funcindex_clientid;
  69         u8 params[HIDPP_REPORT_LONG_LENGTH - 4U];
  70 };
  71
  72 struct rap {
  73         u8 sub_id;
  74         u8 reg_address;
  75         u8 params[HIDPP_REPORT_LONG_LENGTH - 4U];
  76 };
  77
  78 struct hidpp_report {
  79         u8 report_id;
  80         u8 device_index;
  81         union {
  82                 struct fap fap;
  83                 struct rap rap;
  84                 u8 rawbytes[sizeof(struct fap)];
  85         };
  86 } __packed;
  87
  88 struct hidpp_device {
  89         struct hid_device *hid_dev;
  90         struct mutex send_mutex;
  91         void *send_receive_buf;
  92         wait_queue_head_t wait;
  93         bool answer_available;
  94         u8 protocol_major;
  95         u8 protocol_minor;
  96
  97         void *private_data;
  98
  99         struct work_struct work;
 100         struct kfifo delayed_work_fifo;
 101         atomic_t connected;
 102         struct input_dev *delayed_input;
 103
 104         unsigned long quirks;
 105 };
 106
 107
 108 #define HIDPP_ERROR                             0x8f
 109 #define HIDPP_ERROR_SUCCESS                     0x00
 110 #define HIDPP_ERROR_INVALID_SUBID               0x01
 111 #define HIDPP_ERROR_INVALID_ADRESS              0x02
 112 #define HIDPP_ERROR_INVALID_VALUE               0x03
 113 #define HIDPP_ERROR_CONNECT_FAIL                0x04
 114 #define HIDPP_ERROR_TOO_MANY_DEVICES            0x05
 115 #define HIDPP_ERROR_ALREADY_EXISTS              0x06
 116 #define HIDPP_ERROR_BUSY                        0x07
 117 #define HIDPP_ERROR_UNKNOWN_DEVICE              0x08
 118 #define HIDPP_ERROR_RESOURCE_ERROR              0x09
 119 #define HIDPP_ERROR_REQUEST_UNAVAILABLE         0x0a
 120 #define HIDPP_ERROR_INVALID_PARAM_VALUE         0x0b
 121 #define HIDPP_ERROR_WRONG_PIN_CODE              0x0c
 122
 123 static void hidpp_connect_event(struct hidpp_device *hidpp_dev);
 124
 125 static int __hidpp_send_report(struct hid_device *hdev,
 126                                 struct hidpp_report *hidpp_report)
 127 {
 128         int fields_count, ret;
 129
 130         switch (hidpp_report->report_id) {
 131         case REPORT_ID_HIDPP_SHORT:
 132                 fields_count = HIDPP_REPORT_SHORT_LENGTH;
 133                 break;
 134         case REPORT_ID_HIDPP_LONG:
 135                 fields_count = HIDPP_REPORT_LONG_LENGTH;
 136                 break;
 137         default:
 138                 return -ENODEV;
 139         }
 140
 141         /*
 142          * set the device_index as the receiver, it will be overwritten by
 143          * hid_hw_request if needed
 144          */
 145         hidpp_report->device_index = 0xff;
 146
 147         ret = hid_hw_raw_request(hdev, hidpp_report->report_id,
 148                 (u8 *)hidpp_report, fields_count, HID_OUTPUT_REPORT,
 149                 HID_REQ_SET_REPORT);
 150
 151         return ret == fields_count ? 0 : -1;
 152 }
 153
 154 /**
 155  * hidpp_send_message_sync() returns 0 in case of success, and something else
 156  * in case of a failure.
 157  * - If ' something else' is positive, that means that an error has been raised
 158  *   by the protocol itself.
 159  * - If ' something else' is negative, that means that we had a classic error
 160  *   (-ENOMEM, -EPIPE, etc...)
 161  */
 162 static int hidpp_send_message_sync(struct hidpp_device *hidpp,
 163         struct hidpp_report *message,
 164         struct hidpp_report *response)
 165 {
 166         int ret;
 167
 168         mutex_lock(&hidpp->send_mutex);
 169
 170         hidpp->send_receive_buf = response;
 171         hidpp->answer_available = false;
 172
 173         /*
 174          * So that we can later validate the answer when it arrives
 175          * in hidpp_raw_event
 176          */
 177         *response = *message;
 178
 179         ret = __hidpp_send_report(hidpp->hid_dev, message);
 180
 181         if (ret) {
 182                 dbg_hid("__hidpp_send_report returned err: %d\n", ret);
 183                 memset(response, 0, sizeof(struct hidpp_report));
 184                 goto exit;
 185         }
 186
 187         if (!wait_event_timeout(hidpp->wait, hidpp->answer_available,
 188                                 5*HZ)) {
 189                 dbg_hid("%s:timeout waiting for response\n", __func__);
 190                 memset(response, 0, sizeof(struct hidpp_report));
 191                 ret = -ETIMEDOUT;
 192         }
 193
 194         if (response->report_id == REPORT_ID_HIDPP_SHORT &&
 195             response->fap.feature_index == HIDPP_ERROR) {
 196                 ret = response->fap.params[1];
 197                 dbg_hid("__hidpp_send_report got hidpp error %02X\n", ret);
 198                 goto exit;
 199         }
 200
 201 exit:
 202         mutex_unlock(&hidpp->send_mutex);
 203         return ret;
 204
 205 }
 206
 207 static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp,
 208         u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count,
 209         struct hidpp_report *response)
 210 {
 211         struct hidpp_report *message;
 212         int ret;
 213
 214         if (param_count > sizeof(message->fap.params))
 215                 return -EINVAL;
 216
 217         message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
 218         if (!message)
 219                 return -ENOMEM;
 220         message->report_id = REPORT_ID_HIDPP_LONG;
 221         message->fap.feature_index = feat_index;
 222         message->fap.funcindex_clientid = funcindex_clientid;
 223         memcpy(&message->fap.params, params, param_count);
 224
 225         ret = hidpp_send_message_sync(hidpp, message, response);
 226         kfree(message);
 227         return ret;
 228 }
 229
 230 static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
 231         u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count,
 232         struct hidpp_report *response)
 233 {
 234         struct hidpp_report *message;
 235         int ret;
 236
 237         if ((report_id != REPORT_ID_HIDPP_SHORT) &&
 238             (report_id != REPORT_ID_HIDPP_LONG))
 239                 return -EINVAL;
 240
 241         if (param_count > sizeof(message->rap.params))
 242                 return -EINVAL;
 243
 244         message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
 245         if (!message)
 246                 return -ENOMEM;
 247         message->report_id = report_id;
 248         message->rap.sub_id = sub_id;
 249         message->rap.reg_address = reg_address;
 250         memcpy(&message->rap.params, params, param_count);
 251
 252         ret = hidpp_send_message_sync(hidpp_dev, message, response);
 253         kfree(message);
 254         return ret;
 255 }
 256
 257 static void delayed_work_cb(struct work_struct *work)
 258 {
 259         struct hidpp_device *hidpp = container_of(work, struct hidpp_device,
 260                                                         work);
 261         hidpp_connect_event(hidpp);
 262 }
 263
 264 static inline bool hidpp_match_answer(struct hidpp_report *question,
 265                 struct hidpp_report *answer)
 266 {
 267         return (answer->fap.feature_index == question->fap.feature_index) &&
 268            (answer->fap.funcindex_clientid == question->fap.funcindex_clientid);
 269 }
 270
 271 static inline bool hidpp_match_error(struct hidpp_report *question,
 272                 struct hidpp_report *answer)
 273 {
 274         return (answer->fap.feature_index == HIDPP_ERROR) &&
 275             (answer->fap.funcindex_clientid == question->fap.feature_index) &&
 276             (answer->fap.params[0] == question->fap.funcindex_clientid);
 277 }
 278
 279 static inline bool hidpp_report_is_connect_event(struct hidpp_report *report)
 280 {
 281         return (report->report_id == REPORT_ID_HIDPP_SHORT) &&
 282                 (report->rap.sub_id == 0x41);
 283 }
 284
 285 /**
 286  * hidpp_prefix_name() prefixes the current given name with "Logitech ".
 287  */
 288 static void hidpp_prefix_name(char **name, int name_length)
 289 {
 290 #define PREFIX_LENGTH 9 /* "Logitech " */
 291
 292         int new_length;
 293         char *new_name;
 294
 295         if (name_length > PREFIX_LENGTH &&
 296             strncmp(*name, "Logitech ", PREFIX_LENGTH) == 0)
 297                 /* The prefix has is already in the name */
 298                 return;
 299
 300         new_length = PREFIX_LENGTH + name_length;
 301         new_name = kzalloc(new_length, GFP_KERNEL);
 302         if (!new_name)
 303                 return;
 304
 305         snprintf(new_name, new_length, "Logitech %s", *name);
 306
 307         kfree(*name);
 308
 309         *name = new_name;
 310 }
 311
 312 /* -------------------------------------------------------------------------- */
 313 /* HIDP++ 1.0 commands                                                        */
 314 /* -------------------------------------------------------------------------- */
 315
 316 #define HIDPP_SET_REGISTER                              0x80
 317 #define HIDPP_GET_REGISTER                              0x81
 318 #define HIDPP_SET_LONG_REGISTER                         0x82
 319 #define HIDPP_GET_LONG_REGISTER                         0x83
 320
 321 #define HIDPP_REG_PAIRING_INFORMATION                   0xB5
 322 #define DEVICE_NAME                                     0x40
 323
 324 static char *hidpp_get_unifying_name(struct hidpp_device *hidpp_dev)
 325 {
 326         struct hidpp_report response;
 327         int ret;
 328         /* hid-logitech-dj is in charge of setting the right device index */
 329         u8 params[1] = { DEVICE_NAME };
 330         char *name;
 331         int len;
 332
 333         ret = hidpp_send_rap_command_sync(hidpp_dev,
 334                                         REPORT_ID_HIDPP_SHORT,
 335                                         HIDPP_GET_LONG_REGISTER,
 336                                         HIDPP_REG_PAIRING_INFORMATION,
 337                                         params, 1, &response);
 338         if (ret)
 339                 return NULL;
 340
 341         len = response.rap.params[1];
 342
 343         if (2 + len > sizeof(response.rap.params))
 344                 return NULL;
 345
 346         name = kzalloc(len + 1, GFP_KERNEL);
 347         if (!name)
 348                 return NULL;
 349
 350         memcpy(name, &response.rap.params[2], len);
 351
 352         /* include the terminating '\0' */
 353         hidpp_prefix_name(&name, len + 1);
 354
 355         return name;
 356 }
 357
 358 /* -------------------------------------------------------------------------- */
 359 /* 0x0000: Root                                                               */
 360 /* -------------------------------------------------------------------------- */
 361
 362 #define HIDPP_PAGE_ROOT                                 0x0000
 363 #define HIDPP_PAGE_ROOT_IDX                             0x00
 364
 365 #define CMD_ROOT_GET_FEATURE                            0x01
 366 #define CMD_ROOT_GET_PROTOCOL_VERSION                   0x11
 367
 368 static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature,
 369         u8 *feature_index, u8 *feature_type)
 370 {
 371         struct hidpp_report response;
 372         int ret;
 373         u8 params[2] = { feature >> 8, feature & 0x00FF };
 374
 375         ret = hidpp_send_fap_command_sync(hidpp,
 376                         HIDPP_PAGE_ROOT_IDX,
 377                         CMD_ROOT_GET_FEATURE,
 378                         params, 2, &response);
 379         if (ret)
 380                 return ret;
 381
 382         *feature_index = response.fap.params[0];
 383         *feature_type = response.fap.params[1];
 384
 385         return ret;
 386 }
 387
 388 static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp)
 389 {
 390         struct hidpp_report response;
 391         int ret;
 392
 393         ret = hidpp_send_fap_command_sync(hidpp,
 394                         HIDPP_PAGE_ROOT_IDX,
 395                         CMD_ROOT_GET_PROTOCOL_VERSION,
 396                         NULL, 0, &response);
 397
 398         if (ret == HIDPP_ERROR_INVALID_SUBID) {
 399                 hidpp->protocol_major = 1;
 400                 hidpp->protocol_minor = 0;
 401                 return 0;
 402         }
 403
 404         /* the device might not be connected */
 405         if (ret == HIDPP_ERROR_RESOURCE_ERROR)
 406                 return -EIO;
 407
 408         if (ret > 0) {
 409                 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
 410                         __func__, ret);
 411                 return -EPROTO;
 412         }
 413         if (ret)
 414                 return ret;
 415
 416         hidpp->protocol_major = response.fap.params[0];
 417         hidpp->protocol_minor = response.fap.params[1];
 418
 419         return ret;
 420 }
 421
 422 static bool hidpp_is_connected(struct hidpp_device *hidpp)
 423 {
 424         int ret;
 425
 426         ret = hidpp_root_get_protocol_version(hidpp);
 427         if (!ret)
 428                 hid_dbg(hidpp->hid_dev, "HID++ %u.%u device connected.\n",
 429                         hidpp->protocol_major, hidpp->protocol_minor);
 430         return ret == 0;
 431 }
 432
 433 /* -------------------------------------------------------------------------- */
 434 /* 0x0005: GetDeviceNameType                                                  */
 435 /* -------------------------------------------------------------------------- */
 436
 437 #define HIDPP_PAGE_GET_DEVICE_NAME_TYPE                 0x0005
 438
 439 #define CMD_GET_DEVICE_NAME_TYPE_GET_COUNT              0x01
 440 #define CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME        0x11
 441 #define CMD_GET_DEVICE_NAME_TYPE_GET_TYPE               0x21
 442
 443 static int hidpp_devicenametype_get_count(struct hidpp_device *hidpp,
 444         u8 feature_index, u8 *nameLength)
 445 {
 446         struct hidpp_report response;
 447         int ret;
 448
 449         ret = hidpp_send_fap_command_sync(hidpp, feature_index,
 450                 CMD_GET_DEVICE_NAME_TYPE_GET_COUNT, NULL, 0, &response);
 451
 452         if (ret > 0) {
 453                 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
 454                         __func__, ret);
 455                 return -EPROTO;
 456         }
 457         if (ret)
 458                 return ret;
 459
 460         *nameLength = response.fap.params[0];
 461
 462         return ret;
 463 }
 464
 465 static int hidpp_devicenametype_get_device_name(struct hidpp_device *hidpp,
 466         u8 feature_index, u8 char_index, char *device_name, int len_buf)
 467 {
 468         struct hidpp_report response;
 469         int ret, i;
 470         int count;
 471
 472         ret = hidpp_send_fap_command_sync(hidpp, feature_index,
 473                 CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME, &char_index, 1,
 474                 &response);
 475
 476         if (ret > 0) {
 477                 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
 478                         __func__, ret);
 479                 return -EPROTO;
 480         }
 481         if (ret)
 482                 return ret;
 483
 484         if (response.report_id == REPORT_ID_HIDPP_LONG)
 485                 count = HIDPP_REPORT_LONG_LENGTH - 4;
 486         else
 487                 count = HIDPP_REPORT_SHORT_LENGTH - 4;
 488
 489         if (len_buf < count)
 490                 count = len_buf;
 491
 492         for (i = 0; i < count; i++)
 493                 device_name[i] = response.fap.params[i];
 494
 495         return count;
 496 }
 497
 498 static char *hidpp_get_device_name(struct hidpp_device *hidpp)
 499 {
 500         u8 feature_type;
 501         u8 feature_index;
 502         u8 __name_length;
 503         char *name;
 504         unsigned index = 0;
 505         int ret;
 506
 507         ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_GET_DEVICE_NAME_TYPE,
 508                 &feature_index, &feature_type);
 509         if (ret)
 510                 return NULL;
 511
 512         ret = hidpp_devicenametype_get_count(hidpp, feature_index,
 513                 &__name_length);
 514         if (ret)
 515                 return NULL;
 516
 517         name = kzalloc(__name_length + 1, GFP_KERNEL);
 518         if (!name)
 519                 return NULL;
 520
 521         while (index < __name_length) {
 522                 ret = hidpp_devicenametype_get_device_name(hidpp,
 523                         feature_index, index, name + index,
 524                         __name_length - index);
 525                 if (ret <= 0) {
 526                         kfree(name);
 527                         return NULL;
 528                 }
 529                 index += ret;
 530         }
 531
 532         /* include the terminating '\0' */
 533         hidpp_prefix_name(&name, __name_length + 1);
 534
 535         return name;
 536 }
 537
 538 /* -------------------------------------------------------------------------- */
 539 /* 0x6100: TouchPadRawXY                                                      */
 540 /* -------------------------------------------------------------------------- */
 541
 542 #define HIDPP_PAGE_TOUCHPAD_RAW_XY                      0x6100
 543
 544 #define CMD_TOUCHPAD_GET_RAW_INFO                       0x01
 545 #define CMD_TOUCHPAD_SET_RAW_REPORT_STATE               0x21
 546
 547 #define EVENT_TOUCHPAD_RAW_XY                           0x00
 548
 549 #define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT               0x01
 550 #define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT               0x03
 551
 552 struct hidpp_touchpad_raw_info {
 553         u16 x_size;
 554         u16 y_size;
 555         u8 z_range;
 556         u8 area_range;
 557         u8 timestamp_unit;
 558         u8 maxcontacts;
 559         u8 origin;
 560         u16 res;
 561 };
 562
 563 struct hidpp_touchpad_raw_xy_finger {
 564         u8 contact_type;
 565         u8 contact_status;
 566         u16 x;
 567         u16 y;
 568         u8 z;
 569         u8 area;
 570         u8 finger_id;
 571 };
 572
 573 struct hidpp_touchpad_raw_xy {
 574         u16 timestamp;
 575         struct hidpp_touchpad_raw_xy_finger fingers[2];
 576         u8 spurious_flag;
 577         u8 end_of_frame;
 578         u8 finger_count;
 579         u8 button;
 580 };
 581
 582 static int hidpp_touchpad_get_raw_info(struct hidpp_device *hidpp,
 583         u8 feature_index, struct hidpp_touchpad_raw_info *raw_info)
 584 {
 585         struct hidpp_report response;
 586         int ret;
 587         u8 *params = (u8 *)response.fap.params;
 588
 589         ret = hidpp_send_fap_command_sync(hidpp, feature_index,
 590                 CMD_TOUCHPAD_GET_RAW_INFO, NULL, 0, &response);
 591
 592         if (ret > 0) {
 593                 hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
 594                         __func__, ret);
 595                 return -EPROTO;
 596         }
 597         if (ret)
 598                 return ret;
 599
 600         raw_info->x_size = get_unaligned_be16(&params[0]);
 601         raw_info->y_size = get_unaligned_be16(&params[2]);
 602         raw_info->z_range = params[4];
 603         raw_info->area_range = params[5];
 604         raw_info->maxcontacts = params[7];
 605         raw_info->origin = params[8];
 606         /* res is given in unit per inch */
 607         raw_info->res = get_unaligned_be16(&params[13]) * 2 / 51;
 608
 609         return ret;
 610 }
 611
 612 static int hidpp_touchpad_set_raw_report_state(struct hidpp_device *hidpp_dev,
 613                 u8 feature_index, bool send_raw_reports,
 614                 bool sensor_enhanced_settings)
 615 {
 616         struct hidpp_report response;
 617
 618         /*
 619          * Params:
 620          *   bit 0 - enable raw
 621          *   bit 1 - 16bit Z, no area
 622          *   bit 2 - enhanced sensitivity
 623          *   bit 3 - width, height (4 bits each) instead of area
 624          *   bit 4 - send raw + gestures (degrades smoothness)
 625          *   remaining bits - reserved
 626          */
 627         u8 params = send_raw_reports | (sensor_enhanced_settings << 2);
 628
 629         return hidpp_send_fap_command_sync(hidpp_dev, feature_index,
 630                 CMD_TOUCHPAD_SET_RAW_REPORT_STATE, &params, 1, &response);
 631 }
 632
 633 static void hidpp_touchpad_touch_event(u8 *data,
 634         struct hidpp_touchpad_raw_xy_finger *finger)
 635 {
 636         u8 x_m = data[0] << 2;
 637         u8 y_m = data[2] << 2;
 638
 639         finger->x = x_m << 6 | data[1];
 640         finger->y = y_m << 6 | data[3];
 641
 642         finger->contact_type = data[0] >> 6;
 643         finger->contact_status = data[2] >> 6;
 644
 645         finger->z = data[4];
 646         finger->area = data[5];
 647         finger->finger_id = data[6] >> 4;
 648 }
 649
 650 static void hidpp_touchpad_raw_xy_event(struct hidpp_device *hidpp_dev,
 651                 u8 *data, struct hidpp_touchpad_raw_xy *raw_xy)
 652 {
 653         memset(raw_xy, 0, sizeof(struct hidpp_touchpad_raw_xy));
 654         raw_xy->end_of_frame = data[8] & 0x01;
 655         raw_xy->spurious_flag = (data[8] >> 1) & 0x01;
 656         raw_xy->finger_count = data[15] & 0x0f;
 657         raw_xy->button = (data[8] >> 2) & 0x01;
 658
 659         if (raw_xy->finger_count) {
 660                 hidpp_touchpad_touch_event(&data[2], &raw_xy->fingers[0]);
 661                 hidpp_touchpad_touch_event(&data[9], &raw_xy->fingers[1]);
 662         }
 663 }
 664
 665 /* ************************************************************************** */
 666 /*                                                                            */
 667 /* Device Support                                                             */
 668 /*                                                                            */
 669 /* ************************************************************************** */
 670
 671 /* -------------------------------------------------------------------------- */
 672 /* Touchpad HID++ devices                                                     */
 673 /* -------------------------------------------------------------------------- */
 674
 675 #define WTP_MANUAL_RESOLUTION                           39
 676
 677 struct wtp_data {
 678         struct input_dev *input;
 679         u16 x_size, y_size;
 680         u8 finger_count;
 681         u8 mt_feature_index;
 682         u8 button_feature_index;
 683         u8 maxcontacts;
 684         bool flip_y;
 685         unsigned int resolution;
 686 };
 687
 688 static int wtp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 689                 struct hid_field *field, struct hid_usage *usage,
 690                 unsigned long **bit, int *max)
 691 {
 692         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
 693
 694         if ((hidpp->quirks & HIDPP_QUIRK_MULTI_INPUT) &&
 695             (field->application == HID_GD_KEYBOARD))
 696                 return 0;
 697
 698         return -1;
 699 }
 700
 701 static void wtp_populate_input(struct hidpp_device *hidpp,
 702                 struct input_dev *input_dev, bool origin_is_hid_core)
 703 {
 704         struct wtp_data *wd = hidpp->private_data;
 705
 706         if ((hidpp->quirks & HIDPP_QUIRK_MULTI_INPUT) && origin_is_hid_core)
 707                 /* this is the generic hid-input call */
 708                 return;
 709
 710         __set_bit(EV_ABS, input_dev->evbit);
 711         __set_bit(EV_KEY, input_dev->evbit);
 712         __clear_bit(EV_REL, input_dev->evbit);
 713         __clear_bit(EV_LED, input_dev->evbit);
 714
 715         input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, wd->x_size, 0, 0);
 716         input_abs_set_res(input_dev, ABS_MT_POSITION_X, wd->resolution);
 717         input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, wd->y_size, 0, 0);
 718         input_abs_set_res(input_dev, ABS_MT_POSITION_Y, wd->resolution);
 719
 720         /* Max pressure is not given by the devices, pick one */
 721         input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 50, 0, 0);
 722
 723         input_set_capability(input_dev, EV_KEY, BTN_LEFT);
 724
 725         if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS)
 726                 input_set_capability(input_dev, EV_KEY, BTN_RIGHT);
 727         else
 728                 __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit);
 729
 730         input_mt_init_slots(input_dev, wd->maxcontacts, INPUT_MT_POINTER |
 731                 INPUT_MT_DROP_UNUSED);
 732
 733         wd->input = input_dev;
 734 }
 735
 736 static void wtp_touch_event(struct wtp_data *wd,
 737         struct hidpp_touchpad_raw_xy_finger *touch_report)
 738 {
 739         int slot;
 740
 741         if (!touch_report->finger_id || touch_report->contact_type)
 742                 /* no actual data */
 743                 return;
 744
 745         slot = input_mt_get_slot_by_key(wd->input, touch_report->finger_id);
 746
 747         input_mt_slot(wd->input, slot);
 748         input_mt_report_slot_state(wd->input, MT_TOOL_FINGER,
 749                                         touch_report->contact_status);
 750         if (touch_report->contact_status) {
 751                 input_event(wd->input, EV_ABS, ABS_MT_POSITION_X,
 752                                 touch_report->x);
 753                 input_event(wd->input, EV_ABS, ABS_MT_POSITION_Y,
 754                                 wd->flip_y ? wd->y_size - touch_report->y :
 755                                              touch_report->y);
 756                 input_event(wd->input, EV_ABS, ABS_MT_PRESSURE,
 757                                 touch_report->area);
 758         }
 759 }
 760
 761 static void wtp_send_raw_xy_event(struct hidpp_device *hidpp,
 762                 struct hidpp_touchpad_raw_xy *raw)
 763 {
 764         struct wtp_data *wd = hidpp->private_data;
 765         int i;
 766
 767         for (i = 0; i < 2; i++)
 768                 wtp_touch_event(wd, &(raw->fingers[i]));
 769
 770         if (raw->end_of_frame &&
 771             !(hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS))
 772                 input_event(wd->input, EV_KEY, BTN_LEFT, raw->button);
 773
 774         if (raw->end_of_frame || raw->finger_count <= 2) {
 775                 input_mt_sync_frame(wd->input);
 776                 input_sync(wd->input);
 777         }
 778 }
 779
 780 static int wtp_mouse_raw_xy_event(struct hidpp_device *hidpp, u8 *data)
 781 {
 782         struct wtp_data *wd = hidpp->private_data;
 783         u8 c1_area = ((data[7] & 0xf) * (data[7] & 0xf) +
 784                       (data[7] >> 4) * (data[7] >> 4)) / 2;
 785         u8 c2_area = ((data[13] & 0xf) * (data[13] & 0xf) +
 786                       (data[13] >> 4) * (data[13] >> 4)) / 2;
 787         struct hidpp_touchpad_raw_xy raw = {
 788                 .timestamp = data[1],
 789                 .fingers = {
 790                         {
 791                                 .contact_type = 0,
 792                                 .contact_status = !!data[7],
 793                                 .x = get_unaligned_le16(&data[3]),
 794                                 .y = get_unaligned_le16(&data[5]),
 795                                 .z = c1_area,
 796                                 .area = c1_area,
 797                                 .finger_id = data[2],
 798                         }, {
 799                                 .contact_type = 0,
 800                                 .contact_status = !!data[13],
 801                                 .x = get_unaligned_le16(&data[9]),
 802                                 .y = get_unaligned_le16(&data[11]),
 803                                 .z = c2_area,
 804                                 .area = c2_area,
 805                                 .finger_id = data[8],
 806                         }
 807                 },
 808                 .finger_count = wd->maxcontacts,
 809                 .spurious_flag = 0,
 810                 .end_of_frame = (data[0] >> 7) == 0,
 811                 .button = data[0] & 0x01,
 812         };
 813
 814         wtp_send_raw_xy_event(hidpp, &raw);
 815
 816         return 1;
 817 }
 818
 819 static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size)
 820 {
 821         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
 822         struct wtp_data *wd = hidpp->private_data;
 823         struct hidpp_report *report = (struct hidpp_report *)data;
 824         struct hidpp_touchpad_raw_xy raw;
 825
 826         if (!wd || !wd->input)
 827                 return 1;
 828
 829         switch (data[0]) {
 830         case 0x02:
 831                 if (size < 2) {
 832                         hid_err(hdev, "Received HID report of bad size (%d)",
 833                                 size);
 834                         return 1;
 835                 }
 836                 if (hidpp->quirks & HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS) {
 837                         input_event(wd->input, EV_KEY, BTN_LEFT,
 838                                         !!(data[1] & 0x01));
 839                         input_event(wd->input, EV_KEY, BTN_RIGHT,
 840                                         !!(data[1] & 0x02));
 841                         input_sync(wd->input);
 842                         return 0;
 843                 } else {
 844                         if (size < 21)
 845                                 return 1;
 846                         return wtp_mouse_raw_xy_event(hidpp, &data[7]);
 847                 }
 848         case REPORT_ID_HIDPP_LONG:
 849                 /* size is already checked in hidpp_raw_event. */
 850                 if ((report->fap.feature_index != wd->mt_feature_index) ||
 851                     (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY))
 852                         return 1;
 853                 hidpp_touchpad_raw_xy_event(hidpp, data + 4, &raw);
 854
 855                 wtp_send_raw_xy_event(hidpp, &raw);
 856                 return 0;
 857         }
 858
 859         return 0;
 860 }
 861
 862 static int wtp_get_config(struct hidpp_device *hidpp)
 863 {
 864         struct wtp_data *wd = hidpp->private_data;
 865         struct hidpp_touchpad_raw_info raw_info = {0};
 866         u8 feature_type;
 867         int ret;
 868
 869         ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_TOUCHPAD_RAW_XY,
 870                 &wd->mt_feature_index, &feature_type);
 871         if (ret)
 872                 /* means that the device is not powered up */
 873                 return ret;
 874
 875         ret = hidpp_touchpad_get_raw_info(hidpp, wd->mt_feature_index,
 876                 &raw_info);
 877         if (ret)
 878                 return ret;
 879
 880         wd->x_size = raw_info.x_size;
 881         wd->y_size = raw_info.y_size;
 882         wd->maxcontacts = raw_info.maxcontacts;
 883         wd->flip_y = raw_info.origin == TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT;
 884         wd->resolution = raw_info.res;
 885         if (!wd->resolution)
 886                 wd->resolution = WTP_MANUAL_RESOLUTION;
 887
 888         return 0;
 889 }
 890
 891 static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id)
 892 {
 893         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
 894         struct wtp_data *wd;
 895
 896         wd = devm_kzalloc(&hdev->dev, sizeof(struct wtp_data),
 897                         GFP_KERNEL);
 898         if (!wd)
 899                 return -ENOMEM;
 900
 901         hidpp->private_data = wd;
 902
 903         return 0;
 904 };
 905
 906 static void wtp_connect(struct hid_device *hdev, bool connected)
 907 {
 908         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
 909         struct wtp_data *wd = hidpp->private_data;
 910         int ret;
 911
 912         if (!connected)
 913                 return;
 914
 915         if (!wd->x_size) {
 916                 ret = wtp_get_config(hidpp);
 917                 if (ret) {
 918                         hid_err(hdev, "Can not get wtp config: %d\n", ret);
 919                         return;
 920                 }
 921         }
 922
 923         hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index,
 924                         true, true);
 925 }
 926
 927 /* -------------------------------------------------------------------------- */
 928 /* Generic HID++ devices                                                      */
 929 /* -------------------------------------------------------------------------- */
 930
 931 static int hidpp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 932                 struct hid_field *field, struct hid_usage *usage,
 933                 unsigned long **bit, int *max)
 934 {
 935         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
 936
 937         if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
 938                 return wtp_input_mapping(hdev, hi, field, usage, bit, max);
 939
 940         return 0;
 941 }
 942
 943 static void hidpp_populate_input(struct hidpp_device *hidpp,
 944                 struct input_dev *input, bool origin_is_hid_core)
 945 {
 946         if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
 947                 wtp_populate_input(hidpp, input, origin_is_hid_core);
 948 }
 949
 950 static void hidpp_input_configured(struct hid_device *hdev,
 951                                 struct hid_input *hidinput)
 952 {
 953         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
 954         struct input_dev *input = hidinput->input;
 955
 956         hidpp_populate_input(hidpp, input, true);
 957 }
 958
 959 static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data,
 960                 int size)
 961 {
 962         struct hidpp_report *question = hidpp->send_receive_buf;
 963         struct hidpp_report *answer = hidpp->send_receive_buf;
 964         struct hidpp_report *report = (struct hidpp_report *)data;
 965
 966         /*
 967          * If the mutex is locked then we have a pending answer from a
 968          * previoulsly sent command
 969          */
 970         if (unlikely(mutex_is_locked(&hidpp->send_mutex))) {
 971                 /*
 972                  * Check for a correct hidpp20 answer or the corresponding
 973                  * error
 974                  */
 975                 if (hidpp_match_answer(question, report) ||
 976                                 hidpp_match_error(question, report)) {
 977                         *answer = *report;
 978                         hidpp->answer_available = true;
 979                         wake_up(&hidpp->wait);
 980                         /*
 981                          * This was an answer to a command that this driver sent
 982                          * We return 1 to hid-core to avoid forwarding the
 983                          * command upstream as it has been treated by the driver
 984                          */
 985
 986                         return 1;
 987                 }
 988         }
 989
 990         if (unlikely(hidpp_report_is_connect_event(report))) {
 991                 atomic_set(&hidpp->connected,
 992                                 !(report->rap.params[0] & (1 << 6)));
 993                 if ((hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) &&
 994                     (schedule_work(&hidpp->work) == 0))
 995                         dbg_hid("%s: connect event already queued\n", __func__);
 996                 return 1;
 997         }
 998
 999         if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
1000                 return wtp_raw_event(hidpp->hid_dev, data, size);
1001
1002         return 0;
1003 }
1004
1005 static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report,
1006                 u8 *data, int size)
1007 {
1008         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1009
1010         switch (data[0]) {
1011         case REPORT_ID_HIDPP_LONG:
1012                 if (size != HIDPP_REPORT_LONG_LENGTH) {
1013                         hid_err(hdev, "received hid++ report of bad size (%d)",
1014                                 size);
1015                         return 1;
1016                 }
1017                 return hidpp_raw_hidpp_event(hidpp, data, size);
1018         case REPORT_ID_HIDPP_SHORT:
1019                 if (size != HIDPP_REPORT_SHORT_LENGTH) {
1020                         hid_err(hdev, "received hid++ report of bad size (%d)",
1021                                 size);
1022                         return 1;
1023                 }
1024                 return hidpp_raw_hidpp_event(hidpp, data, size);
1025         }
1026
1027         if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
1028                 return wtp_raw_event(hdev, data, size);
1029
1030         return 0;
1031 }
1032
1033 static void hidpp_overwrite_name(struct hid_device *hdev, bool use_unifying)
1034 {
1035         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1036         char *name;
1037
1038         if (use_unifying)
1039                 /*
1040                  * the device is connected through an Unifying receiver, and
1041                  * might not be already connected.
1042                  * Ask the receiver for its name.
1043                  */
1044                 name = hidpp_get_unifying_name(hidpp);
1045         else
1046                 name = hidpp_get_device_name(hidpp);
1047
1048         if (!name)
1049                 hid_err(hdev, "unable to retrieve the name of the device");
1050         else
1051                 snprintf(hdev->name, sizeof(hdev->name), "%s", name);
1052
1053         kfree(name);
1054 }
1055
1056 static int hidpp_input_open(struct input_dev *dev)
1057 {
1058         struct hid_device *hid = input_get_drvdata(dev);
1059
1060         return hid_hw_open(hid);
1061 }
1062
1063 static void hidpp_input_close(struct input_dev *dev)
1064 {
1065         struct hid_device *hid = input_get_drvdata(dev);
1066
1067         hid_hw_close(hid);
1068 }
1069
1070 static struct input_dev *hidpp_allocate_input(struct hid_device *hdev)
1071 {
1072         struct input_dev *input_dev = devm_input_allocate_device(&hdev->dev);
1073
1074         if (!input_dev)
1075                 return NULL;
1076
1077         input_set_drvdata(input_dev, hdev);
1078         input_dev->open = hidpp_input_open;
1079         input_dev->close = hidpp_input_close;
1080
1081         input_dev->name = hdev->name;
1082         input_dev->phys = hdev->phys;
1083         input_dev->uniq = hdev->uniq;
1084         input_dev->id.bustype = hdev->bus;
1085         input_dev->id.vendor  = hdev->vendor;
1086         input_dev->id.product = hdev->product;
1087         input_dev->id.version = hdev->version;
1088         input_dev->dev.parent = &hdev->dev;
1089
1090         return input_dev;
1091 }
1092
1093 static void hidpp_connect_event(struct hidpp_device *hidpp)
1094 {
1095         struct hid_device *hdev = hidpp->hid_dev;
1096         int ret = 0;
1097         bool connected = atomic_read(&hidpp->connected);
1098         struct input_dev *input;
1099         char *name, *devm_name;
1100
1101         if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
1102                 wtp_connect(hdev, connected);
1103
1104         if (!connected || hidpp->delayed_input)
1105                 return;
1106
1107         if (!hidpp->protocol_major) {
1108                 ret = !hidpp_is_connected(hidpp);
1109                 if (ret) {
1110                         hid_err(hdev, "Can not get the protocol version.\n");
1111                         return;
1112                 }
1113         }
1114
1115         /* the device is already connected, we can ask for its name and
1116          * protocol */
1117         hid_info(hdev, "HID++ %u.%u device connected.\n",
1118                  hidpp->protocol_major, hidpp->protocol_minor);
1119
1120         input = hidpp_allocate_input(hdev);
1121         if (!input) {
1122                 hid_err(hdev, "cannot allocate new input device: %d\n", ret);
1123                 return;
1124         }
1125
1126         name = hidpp_get_device_name(hidpp);
1127         if (!name) {
1128                 hid_err(hdev, "unable to retrieve the name of the device");
1129         } else {
1130                 devm_name = devm_kasprintf(&hdev->dev, GFP_KERNEL, "%s", name);
1131                 if (devm_name)
1132                         input->name = devm_name;
1133                 kfree(name);
1134         }
1135
1136         hidpp_populate_input(hidpp, input, false);
1137
1138         ret = input_register_device(input);
1139         if (ret)
1140                 input_free_device(input);
1141
1142         hidpp->delayed_input = input;
1143 }
1144
1145 static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
1146 {
1147         struct hidpp_device *hidpp;
1148         int ret;
1149         bool connected;
1150         unsigned int connect_mask = HID_CONNECT_DEFAULT;
1151
1152         hidpp = devm_kzalloc(&hdev->dev, sizeof(struct hidpp_device),
1153                         GFP_KERNEL);
1154         if (!hidpp)
1155                 return -ENOMEM;
1156
1157         hidpp->hid_dev = hdev;
1158         hid_set_drvdata(hdev, hidpp);
1159
1160         hidpp->quirks = id->driver_data;
1161
1162         if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
1163                 ret = wtp_allocate(hdev, id);
1164                 if (ret)
1165                         goto wtp_allocate_fail;
1166         }
1167
1168         INIT_WORK(&hidpp->work, delayed_work_cb);
1169         mutex_init(&hidpp->send_mutex);
1170         init_waitqueue_head(&hidpp->wait);
1171
1172         ret = hid_parse(hdev);
1173         if (ret) {
1174                 hid_err(hdev, "%s:parse failed\n", __func__);
1175                 goto hid_parse_fail;
1176         }
1177
1178         /* Allow incoming packets */
1179         hid_device_io_start(hdev);
1180
1181         connected = hidpp_is_connected(hidpp);
1182         if (id->group != HID_GROUP_LOGITECH_DJ_DEVICE) {
1183                 if (!connected) {
1184                         hid_err(hdev, "Device not connected");
1185                         hid_device_io_stop(hdev);
1186                         goto hid_parse_fail;
1187                 }
1188
1189                 hid_info(hdev, "HID++ %u.%u device connected.\n",
1190                          hidpp->protocol_major, hidpp->protocol_minor);
1191         }
1192
1193         hidpp_overwrite_name(hdev, id->group == HID_GROUP_LOGITECH_DJ_DEVICE);
1194         atomic_set(&hidpp->connected, connected);
1195
1196         if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)) {
1197                 ret = wtp_get_config(hidpp);
1198                 if (ret)
1199                         goto hid_parse_fail;
1200         }
1201
1202         /* Block incoming packets */
1203         hid_device_io_stop(hdev);
1204
1205         if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT)
1206                 connect_mask &= ~HID_CONNECT_HIDINPUT;
1207
1208         /* Re-enable hidinput for multi-input devices */
1209         if (hidpp->quirks & HIDPP_QUIRK_MULTI_INPUT)
1210                 connect_mask |= HID_CONNECT_HIDINPUT;
1211
1212         ret = hid_hw_start(hdev, connect_mask);
1213         if (ret) {
1214                 hid_err(hdev, "%s:hid_hw_start returned error\n", __func__);
1215                 goto hid_hw_start_fail;
1216         }
1217
1218         if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT) {
1219                 /* Allow incoming packets */
1220                 hid_device_io_start(hdev);
1221
1222                 hidpp_connect_event(hidpp);
1223         }
1224
1225         return ret;
1226
1227 hid_hw_start_fail:
1228 hid_parse_fail:
1229         cancel_work_sync(&hidpp->work);
1230         mutex_destroy(&hidpp->send_mutex);
1231 wtp_allocate_fail:
1232         hid_set_drvdata(hdev, NULL);
1233         return ret;
1234 }
1235
1236 static void hidpp_remove(struct hid_device *hdev)
1237 {
1238         struct hidpp_device *hidpp = hid_get_drvdata(hdev);
1239
1240         cancel_work_sync(&hidpp->work);
1241         mutex_destroy(&hidpp->send_mutex);
1242         hid_hw_stop(hdev);
1243 }
1244
1245 static const struct hid_device_id hidpp_devices[] = {
1246         { /* wireless touchpad */
1247           HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
1248                 USB_VENDOR_ID_LOGITECH, 0x4011),
1249           .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT |
1250                          HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS },
1251         { /* wireless touchpad T650 */
1252           HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
1253                 USB_VENDOR_ID_LOGITECH, 0x4101),
1254           .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT },
1255         { /* wireless touchpad T651 */
1256           HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
1257                 USB_DEVICE_ID_LOGITECH_T651),
1258           .driver_data = HIDPP_QUIRK_CLASS_WTP },
1259         { /* Keyboard TK820 */
1260           HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
1261                 USB_VENDOR_ID_LOGITECH, 0x4102),
1262           .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_MULTI_INPUT |
1263                          HIDPP_QUIRK_CLASS_WTP },
1264
1265         { HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
1266                 USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},
1267         {}
1268 };
1269
1270 MODULE_DEVICE_TABLE(hid, hidpp_devices);
1271
1272 static struct hid_driver hidpp_driver = {
1273         .name = "logitech-hidpp-device",
1274         .id_table = hidpp_devices,
1275         .probe = hidpp_probe,
1276         .remove = hidpp_remove,
1277         .raw_event = hidpp_raw_event,
1278         .input_configured = hidpp_input_configured,
1279         .input_mapping = hidpp_input_mapping,
1280 };
1281
1282 module_hid_driver(hidpp_driver);