drivers/hid/wacom_sys.c

   1 /*
   2  * drivers/input/tablet/wacom_sys.c
   3  *
   4  *  USB Wacom tablet support - system specific code
   5  */
   6
   7 /*
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #include "wacom_wac.h"
  15 #include "wacom.h"
  16 #include <linux/input/mt.h>
  17
  18 #define WAC_MSG_RETRIES         5
  19
  20 #define WAC_CMD_WL_LED_CONTROL  0x03
  21 #define WAC_CMD_LED_CONTROL     0x20
  22 #define WAC_CMD_ICON_START      0x21
  23 #define WAC_CMD_ICON_XFER       0x23
  24 #define WAC_CMD_ICON_BT_XFER    0x26
  25 #define WAC_CMD_RETRIES         10
  26 #define WAC_CMD_DELETE_PAIRING  0x20
  27 #define WAC_CMD_UNPAIR_ALL      0xFF
  28 #define WAC_REMOTE_SERIAL_MAX_STRLEN    9
  29
  30 #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
  31 #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
  32 #define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
  33
  34 static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
  35                             size_t size, unsigned int retries)
  36 {
  37         int retval;
  38
  39         do {
  40                 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
  41                                 HID_REQ_GET_REPORT);
  42         } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
  43
  44         if (retval < 0)
  45                 hid_err(hdev, "wacom_get_report: ran out of retries "
  46                         "(last error = %d)\n", retval);
  47
  48         return retval;
  49 }
  50
  51 static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
  52                             size_t size, unsigned int retries)
  53 {
  54         int retval;
  55
  56         do {
  57                 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
  58                                 HID_REQ_SET_REPORT);
  59         } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);
  60
  61         if (retval < 0)
  62                 hid_err(hdev, "wacom_set_report: ran out of retries "
  63                         "(last error = %d)\n", retval);
  64
  65         return retval;
  66 }
  67
  68 static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
  69                 u8 *raw_data, int size)
  70 {
  71         struct wacom *wacom = hid_get_drvdata(hdev);
  72
  73         if (size > WACOM_PKGLEN_MAX)
  74                 return 1;
  75
  76         memcpy(wacom->wacom_wac.data, raw_data, size);
  77
  78         wacom_wac_irq(&wacom->wacom_wac, size);
  79
  80         return 0;
  81 }
  82
  83 static int wacom_open(struct input_dev *dev)
  84 {
  85         struct wacom *wacom = input_get_drvdata(dev);
  86
  87         return hid_hw_open(wacom->hdev);
  88 }
  89
  90 static void wacom_close(struct input_dev *dev)
  91 {
  92         struct wacom *wacom = input_get_drvdata(dev);
  93
  94         hid_hw_close(wacom->hdev);
  95 }
  96
  97 /*
  98  * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
  99  */
 100 static int wacom_calc_hid_res(int logical_extents, int physical_extents,
 101                                unsigned unit, int exponent)
 102 {
 103         struct hid_field field = {
 104                 .logical_maximum = logical_extents,
 105                 .physical_maximum = physical_extents,
 106                 .unit = unit,
 107                 .unit_exponent = exponent,
 108         };
 109
 110         return hidinput_calc_abs_res(&field, ABS_X);
 111 }
 112
 113 static void wacom_feature_mapping(struct hid_device *hdev,
 114                 struct hid_field *field, struct hid_usage *usage)
 115 {
 116         struct wacom *wacom = hid_get_drvdata(hdev);
 117         struct wacom_features *features = &wacom->wacom_wac.features;
 118         struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
 119         u8 *data;
 120         int ret;
 121
 122         switch (usage->hid) {
 123         case HID_DG_CONTACTMAX:
 124                 /* leave touch_max as is if predefined */
 125                 if (!features->touch_max) {
 126                         /* read manually */
 127                         data = kzalloc(2, GFP_KERNEL);
 128                         if (!data)
 129                                 break;
 130                         data[0] = field->report->id;
 131                         ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
 132                                                 data, 2, WAC_CMD_RETRIES);
 133                         if (ret == 2) {
 134                                 features->touch_max = data[1];
 135                         } else {
 136                                 features->touch_max = 16;
 137                                 hid_warn(hdev, "wacom_feature_mapping: "
 138                                          "could not get HID_DG_CONTACTMAX, "
 139                                          "defaulting to %d\n",
 140                                           features->touch_max);
 141                         }
 142                         kfree(data);
 143                 }
 144                 break;
 145         case HID_DG_INPUTMODE:
 146                 /* Ignore if value index is out of bounds. */
 147                 if (usage->usage_index >= field->report_count) {
 148                         dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
 149                         break;
 150                 }
 151
 152                 hid_data->inputmode = field->report->id;
 153                 hid_data->inputmode_index = usage->usage_index;
 154                 break;
 155
 156         case HID_UP_DIGITIZER:
 157                 if (field->report->id == 0x0B &&
 158                     (field->application == WACOM_G9_DIGITIZER ||
 159                      field->application == WACOM_G11_DIGITIZER)) {
 160                         wacom->wacom_wac.mode_report = field->report->id;
 161                         wacom->wacom_wac.mode_value = 0;
 162                 }
 163                 break;
 164
 165         case WACOM_G9_PAGE:
 166         case WACOM_G11_PAGE:
 167                 if (field->report->id == 0x03 &&
 168                     (field->application == WACOM_G9_TOUCHSCREEN ||
 169                      field->application == WACOM_G11_TOUCHSCREEN)) {
 170                         wacom->wacom_wac.mode_report = field->report->id;
 171                         wacom->wacom_wac.mode_value = 0;
 172                 }
 173                 break;
 174         }
 175 }
 176
 177 /*
 178  * Interface Descriptor of wacom devices can be incomplete and
 179  * inconsistent so wacom_features table is used to store stylus
 180  * device's packet lengths, various maximum values, and tablet
 181  * resolution based on product ID's.
 182  *
 183  * For devices that contain 2 interfaces, wacom_features table is
 184  * inaccurate for the touch interface.  Since the Interface Descriptor
 185  * for touch interfaces has pretty complete data, this function exists
 186  * to query tablet for this missing information instead of hard coding in
 187  * an additional table.
 188  *
 189  * A typical Interface Descriptor for a stylus will contain a
 190  * boot mouse application collection that is not of interest and this
 191  * function will ignore it.
 192  *
 193  * It also contains a digitizer application collection that also is not
 194  * of interest since any information it contains would be duplicate
 195  * of what is in wacom_features. Usually it defines a report of an array
 196  * of bytes that could be used as max length of the stylus packet returned.
 197  * If it happens to define a Digitizer-Stylus Physical Collection then
 198  * the X and Y logical values contain valid data but it is ignored.
 199  *
 200  * A typical Interface Descriptor for a touch interface will contain a
 201  * Digitizer-Finger Physical Collection which will define both logical
 202  * X/Y maximum as well as the physical size of tablet. Since touch
 203  * interfaces haven't supported pressure or distance, this is enough
 204  * information to override invalid values in the wacom_features table.
 205  *
 206  * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
 207  * data. We deal with them after returning from this function.
 208  */
 209 static void wacom_usage_mapping(struct hid_device *hdev,
 210                 struct hid_field *field, struct hid_usage *usage)
 211 {
 212         struct wacom *wacom = hid_get_drvdata(hdev);
 213         struct wacom_features *features = &wacom->wacom_wac.features;
 214         bool finger = WACOM_FINGER_FIELD(field);
 215         bool pen = WACOM_PEN_FIELD(field);
 216
 217         /*
 218         * Requiring Stylus Usage will ignore boot mouse
 219         * X/Y values and some cases of invalid Digitizer X/Y
 220         * values commonly reported.
 221         */
 222         if (pen)
 223                 features->device_type |= WACOM_DEVICETYPE_PEN;
 224         else if (finger)
 225                 features->device_type |= WACOM_DEVICETYPE_TOUCH;
 226         else
 227                 return;
 228
 229         /*
 230          * Bamboo models do not support HID_DG_CONTACTMAX.
 231          * And, Bamboo Pen only descriptor contains touch.
 232          */
 233         if (features->type > BAMBOO_PT) {
 234                 /* ISDv4 touch devices at least supports one touch point */
 235                 if (finger && !features->touch_max)
 236                         features->touch_max = 1;
 237         }
 238
 239         switch (usage->hid) {
 240         case HID_GD_X:
 241                 features->x_max = field->logical_maximum;
 242                 if (finger) {
 243                         features->x_phy = field->physical_maximum;
 244                         if ((features->type != BAMBOO_PT) &&
 245                             (features->type != BAMBOO_TOUCH)) {
 246                                 features->unit = field->unit;
 247                                 features->unitExpo = field->unit_exponent;
 248                         }
 249                 }
 250                 break;
 251         case HID_GD_Y:
 252                 features->y_max = field->logical_maximum;
 253                 if (finger) {
 254                         features->y_phy = field->physical_maximum;
 255                         if ((features->type != BAMBOO_PT) &&
 256                             (features->type != BAMBOO_TOUCH)) {
 257                                 features->unit = field->unit;
 258                                 features->unitExpo = field->unit_exponent;
 259                         }
 260                 }
 261                 break;
 262         case HID_DG_TIPPRESSURE:
 263                 if (pen)
 264                         features->pressure_max = field->logical_maximum;
 265                 break;
 266         }
 267
 268         if (features->type == HID_GENERIC)
 269                 wacom_wac_usage_mapping(hdev, field, usage);
 270 }
 271
 272 static void wacom_post_parse_hid(struct hid_device *hdev,
 273                                  struct wacom_features *features)
 274 {
 275         struct wacom *wacom = hid_get_drvdata(hdev);
 276         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 277
 278         if (features->type == HID_GENERIC) {
 279                 /* Any last-minute generic device setup */
 280                 if (features->touch_max > 1) {
 281                         input_mt_init_slots(wacom_wac->touch_input, wacom_wac->features.touch_max,
 282                                     INPUT_MT_DIRECT);
 283                 }
 284         }
 285 }
 286
 287 static void wacom_parse_hid(struct hid_device *hdev,
 288                            struct wacom_features *features)
 289 {
 290         struct hid_report_enum *rep_enum;
 291         struct hid_report *hreport;
 292         int i, j;
 293
 294         /* check features first */
 295         rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
 296         list_for_each_entry(hreport, &rep_enum->report_list, list) {
 297                 for (i = 0; i < hreport->maxfield; i++) {
 298                         /* Ignore if report count is out of bounds. */
 299                         if (hreport->field[i]->report_count < 1)
 300                                 continue;
 301
 302                         for (j = 0; j < hreport->field[i]->maxusage; j++) {
 303                                 wacom_feature_mapping(hdev, hreport->field[i],
 304                                                 hreport->field[i]->usage + j);
 305                         }
 306                 }
 307         }
 308
 309         /* now check the input usages */
 310         rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
 311         list_for_each_entry(hreport, &rep_enum->report_list, list) {
 312
 313                 if (!hreport->maxfield)
 314                         continue;
 315
 316                 for (i = 0; i < hreport->maxfield; i++)
 317                         for (j = 0; j < hreport->field[i]->maxusage; j++)
 318                                 wacom_usage_mapping(hdev, hreport->field[i],
 319                                                 hreport->field[i]->usage + j);
 320         }
 321
 322         wacom_post_parse_hid(hdev, features);
 323 }
 324
 325 static int wacom_hid_set_device_mode(struct hid_device *hdev)
 326 {
 327         struct wacom *wacom = hid_get_drvdata(hdev);
 328         struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
 329         struct hid_report *r;
 330         struct hid_report_enum *re;
 331
 332         if (hid_data->inputmode < 0)
 333                 return 0;
 334
 335         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 336         r = re->report_id_hash[hid_data->inputmode];
 337         if (r) {
 338                 r->field[0]->value[hid_data->inputmode_index] = 2;
 339                 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 340         }
 341         return 0;
 342 }
 343
 344 static int wacom_set_device_mode(struct hid_device *hdev,
 345                                  struct wacom_wac *wacom_wac)
 346 {
 347         u8 *rep_data;
 348         struct hid_report *r;
 349         struct hid_report_enum *re;
 350         int length;
 351         int error = -ENOMEM, limit = 0;
 352
 353         if (wacom_wac->mode_report < 0)
 354                 return 0;
 355
 356         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 357         r = re->report_id_hash[wacom_wac->mode_report];
 358         if (!r)
 359                 return -EINVAL;
 360
 361         rep_data = hid_alloc_report_buf(r, GFP_KERNEL);
 362         if (!rep_data)
 363                 return -ENOMEM;
 364
 365         length = hid_report_len(r);
 366
 367         do {
 368                 rep_data[0] = wacom_wac->mode_report;
 369                 rep_data[1] = wacom_wac->mode_value;
 370
 371                 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
 372                                          length, 1);
 373                 if (error >= 0)
 374                         error = wacom_get_report(hdev, HID_FEATURE_REPORT,
 375                                                  rep_data, length, 1);
 376         } while (error >= 0 &&
 377                  rep_data[1] != wacom_wac->mode_report &&
 378                  limit++ < WAC_MSG_RETRIES);
 379
 380         kfree(rep_data);
 381
 382         return error < 0 ? error : 0;
 383 }
 384
 385 static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
 386                 struct wacom_features *features)
 387 {
 388         struct wacom *wacom = hid_get_drvdata(hdev);
 389         int ret;
 390         u8 rep_data[2];
 391
 392         switch (features->type) {
 393         case GRAPHIRE_BT:
 394                 rep_data[0] = 0x03;
 395                 rep_data[1] = 0x00;
 396                 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
 397                                         3);
 398
 399                 if (ret >= 0) {
 400                         rep_data[0] = speed == 0 ? 0x05 : 0x06;
 401                         rep_data[1] = 0x00;
 402
 403                         ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
 404                                                 rep_data, 2, 3);
 405
 406                         if (ret >= 0) {
 407                                 wacom->wacom_wac.bt_high_speed = speed;
 408                                 return 0;
 409                         }
 410                 }
 411
 412                 /*
 413                  * Note that if the raw queries fail, it's not a hard failure
 414                  * and it is safe to continue
 415                  */
 416                 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
 417                          rep_data[0], ret);
 418                 break;
 419         case INTUOS4WL:
 420                 if (speed == 1)
 421                         wacom->wacom_wac.bt_features &= ~0x20;
 422                 else
 423                         wacom->wacom_wac.bt_features |= 0x20;
 424
 425                 rep_data[0] = 0x03;
 426                 rep_data[1] = wacom->wacom_wac.bt_features;
 427
 428                 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
 429                                         1);
 430                 if (ret >= 0)
 431                         wacom->wacom_wac.bt_high_speed = speed;
 432                 break;
 433         }
 434
 435         return 0;
 436 }
 437
 438 /*
 439  * Switch the tablet into its most-capable mode. Wacom tablets are
 440  * typically configured to power-up in a mode which sends mouse-like
 441  * reports to the OS. To get absolute position, pressure data, etc.
 442  * from the tablet, it is necessary to switch the tablet out of this
 443  * mode and into one which sends the full range of tablet data.
 444  */
 445 static int wacom_query_tablet_data(struct hid_device *hdev,
 446                 struct wacom_features *features)
 447 {
 448         struct wacom *wacom = hid_get_drvdata(hdev);
 449         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 450
 451         if (hdev->bus == BUS_BLUETOOTH)
 452                 return wacom_bt_query_tablet_data(hdev, 1, features);
 453
 454         if (features->type != HID_GENERIC) {
 455                 if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
 456                         if (features->type > TABLETPC) {
 457                                 /* MT Tablet PC touch */
 458                                 wacom_wac->mode_report = 3;
 459                                 wacom_wac->mode_value = 4;
 460                         } else if (features->type == WACOM_24HDT) {
 461                                 wacom_wac->mode_report = 18;
 462                                 wacom_wac->mode_value = 2;
 463                         } else if (features->type == WACOM_27QHDT) {
 464                                 wacom_wac->mode_report = 131;
 465                                 wacom_wac->mode_value = 2;
 466                         } else if (features->type == BAMBOO_PAD) {
 467                                 wacom_wac->mode_report = 2;
 468                                 wacom_wac->mode_value = 2;
 469                         }
 470                 } else if (features->device_type & WACOM_DEVICETYPE_PEN) {
 471                         if (features->type <= BAMBOO_PT) {
 472                                 wacom_wac->mode_report = 2;
 473                                 wacom_wac->mode_value = 2;
 474                         }
 475                 }
 476         }
 477
 478         wacom_set_device_mode(hdev, wacom_wac);
 479
 480         if (features->type == HID_GENERIC)
 481                 return wacom_hid_set_device_mode(hdev);
 482
 483         return 0;
 484 }
 485
 486 static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
 487                                          struct wacom_features *features)
 488 {
 489         struct wacom *wacom = hid_get_drvdata(hdev);
 490         struct usb_interface *intf = wacom->intf;
 491
 492         /* default features */
 493         features->x_fuzz = 4;
 494         features->y_fuzz = 4;
 495         features->pressure_fuzz = 0;
 496         features->distance_fuzz = 1;
 497         features->tilt_fuzz = 1;
 498
 499         /*
 500          * The wireless device HID is basic and layout conflicts with
 501          * other tablets (monitor and touch interface can look like pen).
 502          * Skip the query for this type and modify defaults based on
 503          * interface number.
 504          */
 505         if (features->type == WIRELESS) {
 506                 if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
 507                         features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
 508                 else
 509                         features->device_type = WACOM_DEVICETYPE_NONE;
 510                 return;
 511         }
 512
 513         wacom_parse_hid(hdev, features);
 514 }
 515
 516 struct wacom_hdev_data {
 517         struct list_head list;
 518         struct kref kref;
 519         struct hid_device *dev;
 520         struct wacom_shared shared;
 521 };
 522
 523 static LIST_HEAD(wacom_udev_list);
 524 static DEFINE_MUTEX(wacom_udev_list_lock);
 525
 526 static bool wacom_are_sibling(struct hid_device *hdev,
 527                 struct hid_device *sibling)
 528 {
 529         struct wacom *wacom = hid_get_drvdata(hdev);
 530         struct wacom_features *features = &wacom->wacom_wac.features;
 531         int vid = features->oVid;
 532         int pid = features->oPid;
 533         int n1,n2;
 534
 535         if (vid == 0 && pid == 0) {
 536                 vid = hdev->vendor;
 537                 pid = hdev->product;
 538         }
 539
 540         if (vid != sibling->vendor || pid != sibling->product)
 541                 return false;
 542
 543         /* Compare the physical path. */
 544         n1 = strrchr(hdev->phys, '.') - hdev->phys;
 545         n2 = strrchr(sibling->phys, '.') - sibling->phys;
 546         if (n1 != n2 || n1 <= 0 || n2 <= 0)
 547                 return false;
 548
 549         return !strncmp(hdev->phys, sibling->phys, n1);
 550 }
 551
 552 static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
 553 {
 554         struct wacom_hdev_data *data;
 555
 556         list_for_each_entry(data, &wacom_udev_list, list) {
 557                 if (wacom_are_sibling(hdev, data->dev)) {
 558                         kref_get(&data->kref);
 559                         return data;
 560                 }
 561         }
 562
 563         return NULL;
 564 }
 565
 566 static int wacom_add_shared_data(struct hid_device *hdev)
 567 {
 568         struct wacom *wacom = hid_get_drvdata(hdev);
 569         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 570         struct wacom_hdev_data *data;
 571         int retval = 0;
 572
 573         mutex_lock(&wacom_udev_list_lock);
 574
 575         data = wacom_get_hdev_data(hdev);
 576         if (!data) {
 577                 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
 578                 if (!data) {
 579                         retval = -ENOMEM;
 580                         goto out;
 581                 }
 582
 583                 kref_init(&data->kref);
 584                 data->dev = hdev;
 585                 list_add_tail(&data->list, &wacom_udev_list);
 586         }
 587
 588         wacom_wac->shared = &data->shared;
 589
 590         if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
 591                 wacom_wac->shared->touch = hdev;
 592         else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
 593                 wacom_wac->shared->pen = hdev;
 594
 595 out:
 596         mutex_unlock(&wacom_udev_list_lock);
 597         return retval;
 598 }
 599
 600 static void wacom_release_shared_data(struct kref *kref)
 601 {
 602         struct wacom_hdev_data *data =
 603                 container_of(kref, struct wacom_hdev_data, kref);
 604
 605         mutex_lock(&wacom_udev_list_lock);
 606         list_del(&data->list);
 607         mutex_unlock(&wacom_udev_list_lock);
 608
 609         kfree(data);
 610 }
 611
 612 static void wacom_remove_shared_data(struct wacom *wacom)
 613 {
 614         struct wacom_hdev_data *data;
 615         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 616
 617         if (wacom_wac->shared) {
 618                 data = container_of(wacom_wac->shared, struct wacom_hdev_data,
 619                                     shared);
 620
 621                 if (wacom_wac->shared->touch == wacom->hdev)
 622                         wacom_wac->shared->touch = NULL;
 623                 else if (wacom_wac->shared->pen == wacom->hdev)
 624                         wacom_wac->shared->pen = NULL;
 625
 626                 kref_put(&data->kref, wacom_release_shared_data);
 627                 wacom_wac->shared = NULL;
 628         }
 629 }
 630
 631 static int wacom_led_control(struct wacom *wacom)
 632 {
 633         unsigned char *buf;
 634         int retval;
 635         unsigned char report_id = WAC_CMD_LED_CONTROL;
 636         int buf_size = 9;
 637
 638         if (wacom->wacom_wac.pid) { /* wireless connected */
 639                 report_id = WAC_CMD_WL_LED_CONTROL;
 640                 buf_size = 13;
 641         }
 642         buf = kzalloc(buf_size, GFP_KERNEL);
 643         if (!buf)
 644                 return -ENOMEM;
 645
 646         if (wacom->wacom_wac.features.type >= INTUOS5S &&
 647             wacom->wacom_wac.features.type <= INTUOSPL) {
 648                 /*
 649                  * Touch Ring and crop mark LED luminance may take on
 650                  * one of four values:
 651                  *    0 = Low; 1 = Medium; 2 = High; 3 = Off
 652                  */
 653                 int ring_led = wacom->led.select[0] & 0x03;
 654                 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
 655                 int crop_lum = 0;
 656                 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
 657
 658                 buf[0] = report_id;
 659                 if (wacom->wacom_wac.pid) {
 660                         wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
 661                                          buf, buf_size, WAC_CMD_RETRIES);
 662                         buf[0] = report_id;
 663                         buf[4] = led_bits;
 664                 } else
 665                         buf[1] = led_bits;
 666         }
 667         else {
 668                 int led = wacom->led.select[0] | 0x4;
 669
 670                 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
 671                     wacom->wacom_wac.features.type == WACOM_24HD)
 672                         led |= (wacom->led.select[1] << 4) | 0x40;
 673
 674                 buf[0] = report_id;
 675                 buf[1] = led;
 676                 buf[2] = wacom->led.llv;
 677                 buf[3] = wacom->led.hlv;
 678                 buf[4] = wacom->led.img_lum;
 679         }
 680
 681         retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
 682                                   WAC_CMD_RETRIES);
 683         kfree(buf);
 684
 685         return retval;
 686 }
 687
 688 static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
 689                 const unsigned len, const void *img)
 690 {
 691         unsigned char *buf;
 692         int i, retval;
 693         const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
 694
 695         buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
 696         if (!buf)
 697                 return -ENOMEM;
 698
 699         /* Send 'start' command */
 700         buf[0] = WAC_CMD_ICON_START;
 701         buf[1] = 1;
 702         retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
 703                                   WAC_CMD_RETRIES);
 704         if (retval < 0)
 705                 goto out;
 706
 707         buf[0] = xfer_id;
 708         buf[1] = button_id & 0x07;
 709         for (i = 0; i < 4; i++) {
 710                 buf[2] = i;
 711                 memcpy(buf + 3, img + i * chunk_len, chunk_len);
 712
 713                 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
 714                                           buf, chunk_len + 3, WAC_CMD_RETRIES);
 715                 if (retval < 0)
 716                         break;
 717         }
 718
 719         /* Send 'stop' */
 720         buf[0] = WAC_CMD_ICON_START;
 721         buf[1] = 0;
 722         wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
 723                          WAC_CMD_RETRIES);
 724
 725 out:
 726         kfree(buf);
 727         return retval;
 728 }
 729
 730 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
 731                                       const char *buf, size_t count)
 732 {
 733         struct hid_device *hdev = to_hid_device(dev);
 734         struct wacom *wacom = hid_get_drvdata(hdev);
 735         unsigned int id;
 736         int err;
 737
 738         err = kstrtouint(buf, 10, &id);
 739         if (err)
 740                 return err;
 741
 742         mutex_lock(&wacom->lock);
 743
 744         wacom->led.select[set_id] = id & 0x3;
 745         err = wacom_led_control(wacom);
 746
 747         mutex_unlock(&wacom->lock);
 748
 749         return err < 0 ? err : count;
 750 }
 751
 752 #define DEVICE_LED_SELECT_ATTR(SET_ID)                                  \
 753 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev,     \
 754         struct device_attribute *attr, const char *buf, size_t count)   \
 755 {                                                                       \
 756         return wacom_led_select_store(dev, SET_ID, buf, count);         \
 757 }                                                                       \
 758 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,      \
 759         struct device_attribute *attr, char *buf)                       \
 760 {                                                                       \
 761         struct hid_device *hdev = to_hid_device(dev);\
 762         struct wacom *wacom = hid_get_drvdata(hdev);                    \
 763         return scnprintf(buf, PAGE_SIZE, "%d\n",                        \
 764                          wacom->led.select[SET_ID]);                    \
 765 }                                                                       \
 766 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,       \
 767                     wacom_led##SET_ID##_select_show,                    \
 768                     wacom_led##SET_ID##_select_store)
 769
 770 DEVICE_LED_SELECT_ATTR(0);
 771 DEVICE_LED_SELECT_ATTR(1);
 772
 773 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
 774                                      const char *buf, size_t count)
 775 {
 776         unsigned int value;
 777         int err;
 778
 779         err = kstrtouint(buf, 10, &value);
 780         if (err)
 781                 return err;
 782
 783         mutex_lock(&wacom->lock);
 784
 785         *dest = value & 0x7f;
 786         err = wacom_led_control(wacom);
 787
 788         mutex_unlock(&wacom->lock);
 789
 790         return err < 0 ? err : count;
 791 }
 792
 793 #define DEVICE_LUMINANCE_ATTR(name, field)                              \
 794 static ssize_t wacom_##name##_luminance_store(struct device *dev,       \
 795         struct device_attribute *attr, const char *buf, size_t count)   \
 796 {                                                                       \
 797         struct hid_device *hdev = to_hid_device(dev);\
 798         struct wacom *wacom = hid_get_drvdata(hdev);                    \
 799                                                                         \
 800         return wacom_luminance_store(wacom, &wacom->led.field,          \
 801                                      buf, count);                       \
 802 }                                                                       \
 803 static ssize_t wacom_##name##_luminance_show(struct device *dev,        \
 804         struct device_attribute *attr, char *buf)                       \
 805 {                                                                       \
 806         struct wacom *wacom = dev_get_drvdata(dev);                     \
 807         return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field);     \
 808 }                                                                       \
 809 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,                  \
 810                    wacom_##name##_luminance_show,                       \
 811                    wacom_##name##_luminance_store)
 812
 813 DEVICE_LUMINANCE_ATTR(status0, llv);
 814 DEVICE_LUMINANCE_ATTR(status1, hlv);
 815 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
 816
 817 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
 818                                         const char *buf, size_t count)
 819 {
 820         struct hid_device *hdev = to_hid_device(dev);
 821         struct wacom *wacom = hid_get_drvdata(hdev);
 822         int err;
 823         unsigned len;
 824         u8 xfer_id;
 825
 826         if (hdev->bus == BUS_BLUETOOTH) {
 827                 len = 256;
 828                 xfer_id = WAC_CMD_ICON_BT_XFER;
 829         } else {
 830                 len = 1024;
 831                 xfer_id = WAC_CMD_ICON_XFER;
 832         }
 833
 834         if (count != len)
 835                 return -EINVAL;
 836
 837         mutex_lock(&wacom->lock);
 838
 839         err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
 840
 841         mutex_unlock(&wacom->lock);
 842
 843         return err < 0 ? err : count;
 844 }
 845
 846 #define DEVICE_BTNIMG_ATTR(BUTTON_ID)                                   \
 847 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev,      \
 848         struct device_attribute *attr, const char *buf, size_t count)   \
 849 {                                                                       \
 850         return wacom_button_image_store(dev, BUTTON_ID, buf, count);    \
 851 }                                                                       \
 852 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,        \
 853                    NULL, wacom_btnimg##BUTTON_ID##_store)
 854
 855 DEVICE_BTNIMG_ATTR(0);
 856 DEVICE_BTNIMG_ATTR(1);
 857 DEVICE_BTNIMG_ATTR(2);
 858 DEVICE_BTNIMG_ATTR(3);
 859 DEVICE_BTNIMG_ATTR(4);
 860 DEVICE_BTNIMG_ATTR(5);
 861 DEVICE_BTNIMG_ATTR(6);
 862 DEVICE_BTNIMG_ATTR(7);
 863
 864 static struct attribute *cintiq_led_attrs[] = {
 865         &dev_attr_status_led0_select.attr,
 866         &dev_attr_status_led1_select.attr,
 867         NULL
 868 };
 869
 870 static struct attribute_group cintiq_led_attr_group = {
 871         .name = "wacom_led",
 872         .attrs = cintiq_led_attrs,
 873 };
 874
 875 static struct attribute *intuos4_led_attrs[] = {
 876         &dev_attr_status0_luminance.attr,
 877         &dev_attr_status1_luminance.attr,
 878         &dev_attr_status_led0_select.attr,
 879         &dev_attr_buttons_luminance.attr,
 880         &dev_attr_button0_rawimg.attr,
 881         &dev_attr_button1_rawimg.attr,
 882         &dev_attr_button2_rawimg.attr,
 883         &dev_attr_button3_rawimg.attr,
 884         &dev_attr_button4_rawimg.attr,
 885         &dev_attr_button5_rawimg.attr,
 886         &dev_attr_button6_rawimg.attr,
 887         &dev_attr_button7_rawimg.attr,
 888         NULL
 889 };
 890
 891 static struct attribute_group intuos4_led_attr_group = {
 892         .name = "wacom_led",
 893         .attrs = intuos4_led_attrs,
 894 };
 895
 896 static struct attribute *intuos5_led_attrs[] = {
 897         &dev_attr_status0_luminance.attr,
 898         &dev_attr_status_led0_select.attr,
 899         NULL
 900 };
 901
 902 static struct attribute_group intuos5_led_attr_group = {
 903         .name = "wacom_led",
 904         .attrs = intuos5_led_attrs,
 905 };
 906
 907 static int wacom_initialize_leds(struct wacom *wacom)
 908 {
 909         int error;
 910
 911         if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
 912                 return 0;
 913
 914         /* Initialize default values */
 915         switch (wacom->wacom_wac.features.type) {
 916         case INTUOS4S:
 917         case INTUOS4:
 918         case INTUOS4WL:
 919         case INTUOS4L:
 920                 wacom->led.select[0] = 0;
 921                 wacom->led.select[1] = 0;
 922                 wacom->led.llv = 10;
 923                 wacom->led.hlv = 20;
 924                 wacom->led.img_lum = 10;
 925                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 926                                            &intuos4_led_attr_group);
 927                 break;
 928
 929         case WACOM_24HD:
 930         case WACOM_21UX2:
 931                 wacom->led.select[0] = 0;
 932                 wacom->led.select[1] = 0;
 933                 wacom->led.llv = 0;
 934                 wacom->led.hlv = 0;
 935                 wacom->led.img_lum = 0;
 936
 937                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 938                                            &cintiq_led_attr_group);
 939                 break;
 940
 941         case INTUOS5S:
 942         case INTUOS5:
 943         case INTUOS5L:
 944         case INTUOSPS:
 945         case INTUOSPM:
 946         case INTUOSPL:
 947                 wacom->led.select[0] = 0;
 948                 wacom->led.select[1] = 0;
 949                 wacom->led.llv = 32;
 950                 wacom->led.hlv = 0;
 951                 wacom->led.img_lum = 0;
 952
 953                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 954                                           &intuos5_led_attr_group);
 955                 break;
 956
 957         default:
 958                 return 0;
 959         }
 960
 961         if (error) {
 962                 hid_err(wacom->hdev,
 963                         "cannot create sysfs group err: %d\n", error);
 964                 return error;
 965         }
 966         wacom_led_control(wacom);
 967         wacom->led_initialized = true;
 968
 969         return 0;
 970 }
 971
 972 static void wacom_destroy_leds(struct wacom *wacom)
 973 {
 974         if (!wacom->led_initialized)
 975                 return;
 976
 977         if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
 978                 return;
 979
 980         wacom->led_initialized = false;
 981
 982         switch (wacom->wacom_wac.features.type) {
 983         case INTUOS4S:
 984         case INTUOS4:
 985         case INTUOS4WL:
 986         case INTUOS4L:
 987                 sysfs_remove_group(&wacom->hdev->dev.kobj,
 988                                    &intuos4_led_attr_group);
 989                 break;
 990
 991         case WACOM_24HD:
 992         case WACOM_21UX2:
 993                 sysfs_remove_group(&wacom->hdev->dev.kobj,
 994                                    &cintiq_led_attr_group);
 995                 break;
 996
 997         case INTUOS5S:
 998         case INTUOS5:
 999         case INTUOS5L:
1000         case INTUOSPS:
1001         case INTUOSPM:
1002         case INTUOSPL:
1003                 sysfs_remove_group(&wacom->hdev->dev.kobj,
1004                                    &intuos5_led_attr_group);
1005                 break;
1006         }
1007 }
1008
1009 static enum power_supply_property wacom_battery_props[] = {
1010         POWER_SUPPLY_PROP_PRESENT,
1011         POWER_SUPPLY_PROP_STATUS,
1012         POWER_SUPPLY_PROP_SCOPE,
1013         POWER_SUPPLY_PROP_CAPACITY
1014 };
1015
1016 static enum power_supply_property wacom_ac_props[] = {
1017         POWER_SUPPLY_PROP_PRESENT,
1018         POWER_SUPPLY_PROP_ONLINE,
1019         POWER_SUPPLY_PROP_SCOPE,
1020 };
1021
1022 static int wacom_battery_get_property(struct power_supply *psy,
1023                                       enum power_supply_property psp,
1024                                       union power_supply_propval *val)
1025 {
1026         struct wacom *wacom = power_supply_get_drvdata(psy);
1027         int ret = 0;
1028
1029         switch (psp) {
1030                 case POWER_SUPPLY_PROP_PRESENT:
1031                         val->intval = wacom->wacom_wac.bat_connected;
1032                         break;
1033                 case POWER_SUPPLY_PROP_SCOPE:
1034                         val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1035                         break;
1036                 case POWER_SUPPLY_PROP_CAPACITY:
1037                         val->intval =
1038                                 wacom->wacom_wac.battery_capacity;
1039                         break;
1040                 case POWER_SUPPLY_PROP_STATUS:
1041                         if (wacom->wacom_wac.bat_charging)
1042                                 val->intval = POWER_SUPPLY_STATUS_CHARGING;
1043                         else if (wacom->wacom_wac.battery_capacity == 100 &&
1044                                     wacom->wacom_wac.ps_connected)
1045                                 val->intval = POWER_SUPPLY_STATUS_FULL;
1046                         else if (wacom->wacom_wac.ps_connected)
1047                                 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1048                         else
1049                                 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1050                         break;
1051                 default:
1052                         ret = -EINVAL;
1053                         break;
1054         }
1055
1056         return ret;
1057 }
1058
1059 static int wacom_ac_get_property(struct power_supply *psy,
1060                                 enum power_supply_property psp,
1061                                 union power_supply_propval *val)
1062 {
1063         struct wacom *wacom = power_supply_get_drvdata(psy);
1064         int ret = 0;
1065
1066         switch (psp) {
1067         case POWER_SUPPLY_PROP_PRESENT:
1068                 /* fall through */
1069         case POWER_SUPPLY_PROP_ONLINE:
1070                 val->intval = wacom->wacom_wac.ps_connected;
1071                 break;
1072         case POWER_SUPPLY_PROP_SCOPE:
1073                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1074                 break;
1075         default:
1076                 ret = -EINVAL;
1077                 break;
1078         }
1079         return ret;
1080 }
1081
1082 static int wacom_initialize_battery(struct wacom *wacom)
1083 {
1084         static atomic_t battery_no = ATOMIC_INIT(0);
1085         struct power_supply_config psy_cfg = { .drv_data = wacom, };
1086         unsigned long n;
1087
1088         if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
1089                 struct power_supply_desc *bat_desc = &wacom->battery_desc;
1090                 struct power_supply_desc *ac_desc = &wacom->ac_desc;
1091                 n = atomic_inc_return(&battery_no) - 1;
1092
1093                 bat_desc->properties = wacom_battery_props;
1094                 bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
1095                 bat_desc->get_property = wacom_battery_get_property;
1096                 sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
1097                 bat_desc->name = wacom->wacom_wac.bat_name;
1098                 bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
1099                 bat_desc->use_for_apm = 0;
1100
1101                 ac_desc->properties = wacom_ac_props;
1102                 ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
1103                 ac_desc->get_property = wacom_ac_get_property;
1104                 sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
1105                 ac_desc->name = wacom->wacom_wac.ac_name;
1106                 ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
1107                 ac_desc->use_for_apm = 0;
1108
1109                 wacom->battery = power_supply_register(&wacom->hdev->dev,
1110                                               &wacom->battery_desc, &psy_cfg);
1111                 if (IS_ERR(wacom->battery))
1112                         return PTR_ERR(wacom->battery);
1113
1114                 power_supply_powers(wacom->battery, &wacom->hdev->dev);
1115
1116                 wacom->ac = power_supply_register(&wacom->hdev->dev,
1117                                                   &wacom->ac_desc,
1118                                                   &psy_cfg);
1119                 if (IS_ERR(wacom->ac)) {
1120                         power_supply_unregister(wacom->battery);
1121                         return PTR_ERR(wacom->ac);
1122                 }
1123
1124                 power_supply_powers(wacom->ac, &wacom->hdev->dev);
1125         }
1126
1127         return 0;
1128 }
1129
1130 static void wacom_destroy_battery(struct wacom *wacom)
1131 {
1132         if (wacom->battery) {
1133                 power_supply_unregister(wacom->battery);
1134                 wacom->battery = NULL;
1135                 power_supply_unregister(wacom->ac);
1136                 wacom->ac = NULL;
1137         }
1138 }
1139
1140 static ssize_t wacom_show_speed(struct device *dev,
1141                                 struct device_attribute
1142                                 *attr, char *buf)
1143 {
1144         struct hid_device *hdev = to_hid_device(dev);
1145         struct wacom *wacom = hid_get_drvdata(hdev);
1146
1147         return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
1148 }
1149
1150 static ssize_t wacom_store_speed(struct device *dev,
1151                                 struct device_attribute *attr,
1152                                 const char *buf, size_t count)
1153 {
1154         struct hid_device *hdev = to_hid_device(dev);
1155         struct wacom *wacom = hid_get_drvdata(hdev);
1156         u8 new_speed;
1157
1158         if (kstrtou8(buf, 0, &new_speed))
1159                 return -EINVAL;
1160
1161         if (new_speed != 0 && new_speed != 1)
1162                 return -EINVAL;
1163
1164         wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1165
1166         return count;
1167 }
1168
1169 static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1170                 wacom_show_speed, wacom_store_speed);
1171
1172
1173 static ssize_t wacom_show_remote_mode(struct kobject *kobj,
1174                                       struct kobj_attribute *kattr,
1175                                       char *buf, int index)
1176 {
1177         struct device *dev = kobj_to_dev(kobj->parent);
1178         struct hid_device *hdev = to_hid_device(dev);
1179         struct wacom *wacom = hid_get_drvdata(hdev);
1180         u8 mode;
1181
1182         mode = wacom->led.select[index];
1183         if (mode >= 0 && mode < 3)
1184                 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
1185         else
1186                 return snprintf(buf, PAGE_SIZE, "%d\n", -1);
1187 }
1188
1189 #define DEVICE_EKR_ATTR_GROUP(SET_ID)                                   \
1190 static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj,   \
1191                                struct kobj_attribute *kattr, char *buf) \
1192 {                                                                       \
1193         return wacom_show_remote_mode(kobj, kattr, buf, SET_ID);        \
1194 }                                                                       \
1195 static struct kobj_attribute remote##SET_ID##_mode_attr = {             \
1196         .attr = {.name = "remote_mode",                                 \
1197                 .mode = DEV_ATTR_RO_PERM},                              \
1198         .show = wacom_show_remote##SET_ID##_mode,                       \
1199 };                                                                      \
1200 static struct attribute *remote##SET_ID##_serial_attrs[] = {            \
1201         &remote##SET_ID##_mode_attr.attr,                               \
1202         NULL                                                            \
1203 };                                                                      \
1204 static struct attribute_group remote##SET_ID##_serial_group = {         \
1205         .name = NULL,                                                   \
1206         .attrs = remote##SET_ID##_serial_attrs,                         \
1207 }
1208
1209 DEVICE_EKR_ATTR_GROUP(0);
1210 DEVICE_EKR_ATTR_GROUP(1);
1211 DEVICE_EKR_ATTR_GROUP(2);
1212 DEVICE_EKR_ATTR_GROUP(3);
1213 DEVICE_EKR_ATTR_GROUP(4);
1214
1215 int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, int index)
1216 {
1217         int error = 0;
1218         char *buf;
1219         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1220
1221         wacom_wac->serial[index] = serial;
1222
1223         buf = kzalloc(WAC_REMOTE_SERIAL_MAX_STRLEN, GFP_KERNEL);
1224         if (!buf)
1225                 return -ENOMEM;
1226         snprintf(buf, WAC_REMOTE_SERIAL_MAX_STRLEN, "%d", serial);
1227         wacom->remote_group[index].name = buf;
1228
1229         error = sysfs_create_group(wacom->remote_dir,
1230                                    &wacom->remote_group[index]);
1231         if (error) {
1232                 hid_err(wacom->hdev,
1233                         "cannot create sysfs group err: %d\n", error);
1234                 kobject_put(wacom->remote_dir);
1235                 return error;
1236         }
1237
1238         return 0;
1239 }
1240
1241 void wacom_remote_destroy_attr_group(struct wacom *wacom, __u32 serial)
1242 {
1243         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1244         int i;
1245
1246         if (!serial)
1247                 return;
1248
1249         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1250                 if (wacom_wac->serial[i] == serial) {
1251                         wacom_wac->serial[i] = 0;
1252                         wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
1253                         if (wacom->remote_group[i].name) {
1254                                 sysfs_remove_group(wacom->remote_dir,
1255                                                    &wacom->remote_group[i]);
1256                                 kfree(wacom->remote_group[i].name);
1257                                 wacom->remote_group[i].name = NULL;
1258                         }
1259                 }
1260         }
1261 }
1262
1263 static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
1264 {
1265         const size_t buf_size = 2;
1266         unsigned char *buf;
1267         int retval;
1268
1269         buf = kzalloc(buf_size, GFP_KERNEL);
1270         if (!buf)
1271                 return -ENOMEM;
1272
1273         buf[0] = WAC_CMD_DELETE_PAIRING;
1274         buf[1] = selector;
1275
1276         retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
1277                                   buf_size, WAC_CMD_RETRIES);
1278         kfree(buf);
1279
1280         return retval;
1281 }
1282
1283 static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
1284                                          struct kobj_attribute *attr,
1285                                          const char *buf, size_t count)
1286 {
1287         unsigned char selector = 0;
1288         struct device *dev = kobj_to_dev(kobj->parent);
1289         struct hid_device *hdev = to_hid_device(dev);
1290         struct wacom *wacom = hid_get_drvdata(hdev);
1291         int err;
1292
1293         if (!strncmp(buf, "*\n", 2)) {
1294                 selector = WAC_CMD_UNPAIR_ALL;
1295         } else {
1296                 hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
1297                          buf);
1298                 return -1;
1299         }
1300
1301         mutex_lock(&wacom->lock);
1302
1303         err = wacom_cmd_unpair_remote(wacom, selector);
1304         mutex_unlock(&wacom->lock);
1305
1306         return err < 0 ? err : count;
1307 }
1308
1309 static struct kobj_attribute unpair_remote_attr = {
1310         .attr = {.name = "unpair_remote", .mode = 0200},
1311         .store = wacom_store_unpair_remote,
1312 };
1313
1314 static const struct attribute *remote_unpair_attrs[] = {
1315         &unpair_remote_attr.attr,
1316         NULL
1317 };
1318
1319 static int wacom_initialize_remote(struct wacom *wacom)
1320 {
1321         int error = 0;
1322         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1323         int i;
1324
1325         if (wacom->wacom_wac.features.type != REMOTE)
1326                 return 0;
1327
1328         wacom->remote_group[0] = remote0_serial_group;
1329         wacom->remote_group[1] = remote1_serial_group;
1330         wacom->remote_group[2] = remote2_serial_group;
1331         wacom->remote_group[3] = remote3_serial_group;
1332         wacom->remote_group[4] = remote4_serial_group;
1333
1334         wacom->remote_dir = kobject_create_and_add("wacom_remote",
1335                                                    &wacom->hdev->dev.kobj);
1336         if (!wacom->remote_dir)
1337                 return -ENOMEM;
1338
1339         error = sysfs_create_files(wacom->remote_dir, remote_unpair_attrs);
1340
1341         if (error) {
1342                 hid_err(wacom->hdev,
1343                         "cannot create sysfs group err: %d\n", error);
1344                 return error;
1345         }
1346
1347         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1348                 wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
1349                 wacom_wac->serial[i] = 0;
1350         }
1351
1352         return 0;
1353 }
1354
1355 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1356 {
1357         struct input_dev *input_dev;
1358         struct hid_device *hdev = wacom->hdev;
1359         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1360
1361         input_dev = input_allocate_device();
1362         if (!input_dev)
1363                 return NULL;
1364
1365         input_dev->name = wacom_wac->features.name;
1366         input_dev->phys = hdev->phys;
1367         input_dev->dev.parent = &hdev->dev;
1368         input_dev->open = wacom_open;
1369         input_dev->close = wacom_close;
1370         input_dev->uniq = hdev->uniq;
1371         input_dev->id.bustype = hdev->bus;
1372         input_dev->id.vendor  = hdev->vendor;
1373         input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1374         input_dev->id.version = hdev->version;
1375         input_set_drvdata(input_dev, wacom);
1376
1377         return input_dev;
1378 }
1379
1380 static void wacom_clean_inputs(struct wacom *wacom)
1381 {
1382         if (wacom->wacom_wac.pen_input) {
1383                 if (wacom->wacom_wac.pen_registered)
1384                         input_unregister_device(wacom->wacom_wac.pen_input);
1385                 else
1386                         input_free_device(wacom->wacom_wac.pen_input);
1387         }
1388         if (wacom->wacom_wac.touch_input) {
1389                 if (wacom->wacom_wac.touch_registered)
1390                         input_unregister_device(wacom->wacom_wac.touch_input);
1391                 else
1392                         input_free_device(wacom->wacom_wac.touch_input);
1393         }
1394         if (wacom->wacom_wac.pad_input) {
1395                 if (wacom->wacom_wac.pad_registered)
1396                         input_unregister_device(wacom->wacom_wac.pad_input);
1397                 else
1398                         input_free_device(wacom->wacom_wac.pad_input);
1399         }
1400         kobject_put(wacom->remote_dir);
1401         wacom->wacom_wac.pen_input = NULL;
1402         wacom->wacom_wac.touch_input = NULL;
1403         wacom->wacom_wac.pad_input = NULL;
1404         wacom->wacom_wac.pen_registered = false;
1405         wacom->wacom_wac.touch_registered = false;
1406         wacom->wacom_wac.pad_registered = false;
1407         wacom_destroy_leds(wacom);
1408 }
1409
1410 static int wacom_allocate_inputs(struct wacom *wacom)
1411 {
1412         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1413
1414         wacom_wac->pen_input = wacom_allocate_input(wacom);
1415         wacom_wac->touch_input = wacom_allocate_input(wacom);
1416         wacom_wac->pad_input = wacom_allocate_input(wacom);
1417         if (!wacom_wac->pen_input || !wacom_wac->touch_input || !wacom_wac->pad_input) {
1418                 wacom_clean_inputs(wacom);
1419                 return -ENOMEM;
1420         }
1421
1422         wacom_wac->pen_input->name = wacom_wac->pen_name;
1423         wacom_wac->touch_input->name = wacom_wac->touch_name;
1424         wacom_wac->pad_input->name = wacom_wac->pad_name;
1425
1426         return 0;
1427 }
1428
1429 static int wacom_register_inputs(struct wacom *wacom)
1430 {
1431         struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
1432         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1433         int error = 0;
1434
1435         pen_input_dev = wacom_wac->pen_input;
1436         touch_input_dev = wacom_wac->touch_input;
1437         pad_input_dev = wacom_wac->pad_input;
1438
1439         if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
1440                 return -EINVAL;
1441
1442         error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
1443         if (error) {
1444                 /* no pen in use on this interface */
1445                 input_free_device(pen_input_dev);
1446                 wacom_wac->pen_input = NULL;
1447                 pen_input_dev = NULL;
1448         } else {
1449                 error = input_register_device(pen_input_dev);
1450                 if (error)
1451                         goto fail_register_pen_input;
1452                 wacom_wac->pen_registered = true;
1453         }
1454
1455         error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
1456         if (error) {
1457                 /* no touch in use on this interface */
1458                 input_free_device(touch_input_dev);
1459                 wacom_wac->touch_input = NULL;
1460                 touch_input_dev = NULL;
1461         } else {
1462                 error = input_register_device(touch_input_dev);
1463                 if (error)
1464                         goto fail_register_touch_input;
1465                 wacom_wac->touch_registered = true;
1466         }
1467
1468         error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1469         if (error) {
1470                 /* no pad in use on this interface */
1471                 input_free_device(pad_input_dev);
1472                 wacom_wac->pad_input = NULL;
1473                 pad_input_dev = NULL;
1474         } else {
1475                 error = input_register_device(pad_input_dev);
1476                 if (error)
1477                         goto fail_register_pad_input;
1478                 wacom_wac->pad_registered = true;
1479
1480                 error = wacom_initialize_leds(wacom);
1481                 if (error)
1482                         goto fail_leds;
1483
1484                 error = wacom_initialize_remote(wacom);
1485                 if (error)
1486                         goto fail_remote;
1487         }
1488
1489         return 0;
1490
1491 fail_remote:
1492         wacom_destroy_leds(wacom);
1493 fail_leds:
1494         input_unregister_device(pad_input_dev);
1495         pad_input_dev = NULL;
1496         wacom_wac->pad_registered = false;
1497 fail_register_pad_input:
1498         if (touch_input_dev)
1499                 input_unregister_device(touch_input_dev);
1500         wacom_wac->touch_input = NULL;
1501         wacom_wac->touch_registered = false;
1502 fail_register_touch_input:
1503         if (pen_input_dev)
1504                 input_unregister_device(pen_input_dev);
1505         wacom_wac->pen_input = NULL;
1506         wacom_wac->pen_registered = false;
1507 fail_register_pen_input:
1508         return error;
1509 }
1510
1511 /*
1512  * Not all devices report physical dimensions from HID.
1513  * Compute the default from hardcoded logical dimension
1514  * and resolution before driver overwrites them.
1515  */
1516 static void wacom_set_default_phy(struct wacom_features *features)
1517 {
1518         if (features->x_resolution) {
1519                 features->x_phy = (features->x_max * 100) /
1520                                         features->x_resolution;
1521                 features->y_phy = (features->y_max * 100) /
1522                                         features->y_resolution;
1523         }
1524 }
1525
1526 static void wacom_calculate_res(struct wacom_features *features)
1527 {
1528         /* set unit to "100th of a mm" for devices not reported by HID */
1529         if (!features->unit) {
1530                 features->unit = 0x11;
1531                 features->unitExpo = -3;
1532         }
1533
1534         features->x_resolution = wacom_calc_hid_res(features->x_max,
1535                                                     features->x_phy,
1536                                                     features->unit,
1537                                                     features->unitExpo);
1538         features->y_resolution = wacom_calc_hid_res(features->y_max,
1539                                                     features->y_phy,
1540                                                     features->unit,
1541                                                     features->unitExpo);
1542 }
1543
1544 void wacom_battery_work(struct work_struct *work)
1545 {
1546         struct wacom *wacom = container_of(work, struct wacom, work);
1547
1548         if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1549              !wacom->battery) {
1550                 wacom_initialize_battery(wacom);
1551         }
1552         else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1553                  wacom->battery) {
1554                 wacom_destroy_battery(wacom);
1555         }
1556 }
1557
1558 static size_t wacom_compute_pktlen(struct hid_device *hdev)
1559 {
1560         struct hid_report_enum *report_enum;
1561         struct hid_report *report;
1562         size_t size = 0;
1563
1564         report_enum = hdev->report_enum + HID_INPUT_REPORT;
1565
1566         list_for_each_entry(report, &report_enum->report_list, list) {
1567                 size_t report_size = hid_report_len(report);
1568                 if (report_size > size)
1569                         size = report_size;
1570         }
1571
1572         return size;
1573 }
1574
1575 static void wacom_update_name(struct wacom *wacom, const char *suffix)
1576 {
1577         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1578         struct wacom_features *features = &wacom_wac->features;
1579         char name[WACOM_NAME_MAX];
1580
1581         /* Generic devices name unspecified */
1582         if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
1583                 if (strstr(wacom->hdev->name, "Wacom") ||
1584                     strstr(wacom->hdev->name, "wacom") ||
1585                     strstr(wacom->hdev->name, "WACOM")) {
1586                         /* name is in HID descriptor, use it */
1587                         strlcpy(name, wacom->hdev->name, sizeof(name));
1588
1589                         /* strip out excess whitespaces */
1590                         while (1) {
1591                                 char *gap = strstr(name, "  ");
1592                                 if (gap == NULL)
1593                                         break;
1594                                 /* shift everything including the terminator */
1595                                 memmove(gap, gap+1, strlen(gap));
1596                         }
1597                         /* get rid of trailing whitespace */
1598                         if (name[strlen(name)-1] == ' ')
1599                                 name[strlen(name)-1] = '\0';
1600                 } else {
1601                         /* no meaningful name retrieved. use product ID */
1602                         snprintf(name, sizeof(name),
1603                                  "%s %X", features->name, wacom->hdev->product);
1604                 }
1605         } else {
1606                 strlcpy(name, features->name, sizeof(name));
1607         }
1608
1609         /* Append the device type to the name */
1610         snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
1611                 "%s%s Pen", name, suffix);
1612         snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
1613                 "%s%s Finger", name, suffix);
1614         snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1615                 "%s%s Pad", name, suffix);
1616 }
1617
1618 static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
1619 {
1620         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1621         struct wacom_features *features = &wacom_wac->features;
1622         struct hid_device *hdev = wacom->hdev;
1623         int error;
1624         unsigned int connect_mask = HID_CONNECT_HIDRAW;
1625
1626         features->pktlen = wacom_compute_pktlen(hdev);
1627         if (features->pktlen > WACOM_PKGLEN_MAX)
1628                 return -EINVAL;
1629
1630         error = wacom_allocate_inputs(wacom);
1631         if (error)
1632                 return error;
1633
1634         /*
1635          * Bamboo Pad has a generic hid handling for the Pen, and we switch it
1636          * into debug mode for the touch part.
1637          * We ignore the other interfaces.
1638          */
1639         if (features->type == BAMBOO_PAD) {
1640                 if (features->pktlen == WACOM_PKGLEN_PENABLED) {
1641                         features->type = HID_GENERIC;
1642                 } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
1643                            (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
1644                         error = -ENODEV;
1645                         goto fail_allocate_inputs;
1646                 }
1647         }
1648
1649         /* set the default size in case we do not get them from hid */
1650         wacom_set_default_phy(features);
1651
1652         /* Retrieve the physical and logical size for touch devices */
1653         wacom_retrieve_hid_descriptor(hdev, features);
1654         wacom_setup_device_quirks(wacom);
1655
1656         if (features->device_type == WACOM_DEVICETYPE_NONE &&
1657             features->type != WIRELESS) {
1658                 error = features->type == HID_GENERIC ? -ENODEV : 0;
1659
1660                 dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
1661                          hdev->name,
1662                          error ? "Ignoring" : "Assuming pen");
1663
1664                 if (error)
1665                         goto fail_parsed;
1666
1667                 features->device_type |= WACOM_DEVICETYPE_PEN;
1668         }
1669
1670         wacom_calculate_res(features);
1671
1672         wacom_update_name(wacom, wireless ? " (WL)" : "");
1673
1674         error = wacom_add_shared_data(hdev);
1675         if (error)
1676                 goto fail_shared_data;
1677
1678         if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
1679              (features->quirks & WACOM_QUIRK_BATTERY)) {
1680                 error = wacom_initialize_battery(wacom);
1681                 if (error)
1682                         goto fail_battery;
1683         }
1684
1685         error = wacom_register_inputs(wacom);
1686         if (error)
1687                 goto fail_register_inputs;
1688
1689         if (features->type == HID_GENERIC)
1690                 connect_mask |= HID_CONNECT_DRIVER;
1691
1692         /* Regular HID work starts now */
1693         error = hid_hw_start(hdev, connect_mask);
1694         if (error) {
1695                 hid_err(hdev, "hw start failed\n");
1696                 goto fail_hw_start;
1697         }
1698
1699         if (!wireless) {
1700                 /* Note that if query fails it is not a hard failure */
1701                 wacom_query_tablet_data(hdev, features);
1702         }
1703
1704         /* touch only Bamboo doesn't support pen */
1705         if ((features->type == BAMBOO_TOUCH) &&
1706             (features->device_type & WACOM_DEVICETYPE_PEN)) {
1707                 error = -ENODEV;
1708                 goto fail_hw_start;
1709         }
1710
1711         /* pen only Bamboo neither support touch nor pad */
1712         if ((features->type == BAMBOO_PEN) &&
1713             ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
1714             (features->device_type & WACOM_DEVICETYPE_PAD))) {
1715                 error = -ENODEV;
1716                 goto fail_hw_start;
1717         }
1718
1719         if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1720                 error = hid_hw_open(hdev);
1721
1722         if ((wacom_wac->features.type == INTUOSHT ||
1723             wacom_wac->features.type == INTUOSHT2) &&
1724             (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)) {
1725                         wacom_wac->shared->touch_input = wacom_wac->touch_input;
1726         }
1727
1728         return 0;
1729
1730 fail_hw_start:
1731         hid_hw_stop(hdev);
1732 fail_register_inputs:
1733         wacom_clean_inputs(wacom);
1734         wacom_destroy_battery(wacom);
1735 fail_battery:
1736         wacom_remove_shared_data(wacom);
1737 fail_shared_data:
1738 fail_parsed:
1739 fail_allocate_inputs:
1740         wacom_clean_inputs(wacom);
1741         return error;
1742 }
1743
1744 static void wacom_wireless_work(struct work_struct *work)
1745 {
1746         struct wacom *wacom = container_of(work, struct wacom, work);
1747         struct usb_device *usbdev = wacom->usbdev;
1748         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1749         struct hid_device *hdev1, *hdev2;
1750         struct wacom *wacom1, *wacom2;
1751         struct wacom_wac *wacom_wac1, *wacom_wac2;
1752         int error;
1753
1754         /*
1755          * Regardless if this is a disconnect or a new tablet,
1756          * remove any existing input and battery devices.
1757          */
1758
1759         wacom_destroy_battery(wacom);
1760
1761         /* Stylus interface */
1762         hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
1763         wacom1 = hid_get_drvdata(hdev1);
1764         wacom_wac1 = &(wacom1->wacom_wac);
1765         wacom_clean_inputs(wacom1);
1766
1767         /* Touch interface */
1768         hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
1769         wacom2 = hid_get_drvdata(hdev2);
1770         wacom_wac2 = &(wacom2->wacom_wac);
1771         wacom_clean_inputs(wacom2);
1772
1773         if (wacom_wac->pid == 0) {
1774                 hid_info(wacom->hdev, "wireless tablet disconnected\n");
1775                 wacom_wac1->shared->type = 0;
1776         } else {
1777                 const struct hid_device_id *id = wacom_ids;
1778
1779                 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1780                          wacom_wac->pid);
1781
1782                 while (id->bus) {
1783                         if (id->vendor == USB_VENDOR_ID_WACOM &&
1784                             id->product == wacom_wac->pid)
1785                                 break;
1786                         id++;
1787                 }
1788
1789                 if (!id->bus) {
1790                         hid_info(wacom->hdev, "ignoring unknown PID.\n");
1791                         return;
1792                 }
1793
1794                 /* Stylus interface */
1795                 wacom_wac1->features =
1796                         *((struct wacom_features *)id->driver_data);
1797
1798                 wacom_wac1->pid = wacom_wac->pid;
1799                 hid_hw_stop(hdev1);
1800                 error = wacom_parse_and_register(wacom1, true);
1801                 if (error)
1802                         goto fail;
1803
1804                 /* Touch interface */
1805                 if (wacom_wac1->features.touch_max ||
1806                     (wacom_wac1->features.type >= INTUOSHT &&
1807                     wacom_wac1->features.type <= BAMBOO_PT)) {
1808                         wacom_wac2->features =
1809                                 *((struct wacom_features *)id->driver_data);
1810                         wacom_wac2->pid = wacom_wac->pid;
1811                         hid_hw_stop(hdev2);
1812                         error = wacom_parse_and_register(wacom2, true);
1813                         if (error)
1814                                 goto fail;
1815                 }
1816
1817                 error = wacom_initialize_battery(wacom);
1818                 if (error)
1819                         goto fail;
1820         }
1821
1822         return;
1823
1824 fail:
1825         wacom_clean_inputs(wacom1);
1826         wacom_clean_inputs(wacom2);
1827         return;
1828 }
1829
1830 static int wacom_probe(struct hid_device *hdev,
1831                 const struct hid_device_id *id)
1832 {
1833         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1834         struct usb_device *dev = interface_to_usbdev(intf);
1835         struct wacom *wacom;
1836         struct wacom_wac *wacom_wac;
1837         struct wacom_features *features;
1838         int error;
1839
1840         if (!id->driver_data)
1841                 return -EINVAL;
1842
1843         hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1844
1845         /* hid-core sets this quirk for the boot interface */
1846         hdev->quirks &= ~HID_QUIRK_NOGET;
1847
1848         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1849         if (!wacom)
1850                 return -ENOMEM;
1851
1852         hid_set_drvdata(hdev, wacom);
1853         wacom->hdev = hdev;
1854
1855         wacom_wac = &wacom->wacom_wac;
1856         wacom_wac->features = *((struct wacom_features *)id->driver_data);
1857         features = &wacom_wac->features;
1858
1859         if (features->check_for_hid_type && features->hid_type != hdev->type) {
1860                 error = -ENODEV;
1861                 goto fail_type;
1862         }
1863
1864         wacom_wac->hid_data.inputmode = -1;
1865         wacom_wac->mode_report = -1;
1866
1867         wacom->usbdev = dev;
1868         wacom->intf = intf;
1869         mutex_init(&wacom->lock);
1870         INIT_WORK(&wacom->work, wacom_wireless_work);
1871
1872         /* ask for the report descriptor to be loaded by HID */
1873         error = hid_parse(hdev);
1874         if (error) {
1875                 hid_err(hdev, "parse failed\n");
1876                 goto fail_parse;
1877         }
1878
1879         error = wacom_parse_and_register(wacom, false);
1880         if (error)
1881                 goto fail_parse;
1882
1883         if (hdev->bus == BUS_BLUETOOTH) {
1884                 error = device_create_file(&hdev->dev, &dev_attr_speed);
1885                 if (error)
1886                         hid_warn(hdev,
1887                                  "can't create sysfs speed attribute err: %d\n",
1888                                  error);
1889         }
1890
1891         return 0;
1892
1893 fail_type:
1894 fail_parse:
1895         kfree(wacom);
1896         hid_set_drvdata(hdev, NULL);
1897         return error;
1898 }
1899
1900 static void wacom_remove(struct hid_device *hdev)
1901 {
1902         struct wacom *wacom = hid_get_drvdata(hdev);
1903         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1904         struct wacom_features *features = &wacom_wac->features;
1905
1906         if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1907                 hid_hw_close(hdev);
1908
1909         hid_hw_stop(hdev);
1910
1911         cancel_work_sync(&wacom->work);
1912         wacom_clean_inputs(wacom);
1913         if (hdev->bus == BUS_BLUETOOTH)
1914                 device_remove_file(&hdev->dev, &dev_attr_speed);
1915         wacom_destroy_battery(wacom);
1916         wacom_remove_shared_data(wacom);
1917
1918         hid_set_drvdata(hdev, NULL);
1919         kfree(wacom);
1920 }
1921
1922 #ifdef CONFIG_PM
1923 static int wacom_resume(struct hid_device *hdev)
1924 {
1925         struct wacom *wacom = hid_get_drvdata(hdev);
1926         struct wacom_features *features = &wacom->wacom_wac.features;
1927
1928         mutex_lock(&wacom->lock);
1929
1930         /* switch to wacom mode first */
1931         wacom_query_tablet_data(hdev, features);
1932         wacom_led_control(wacom);
1933
1934         mutex_unlock(&wacom->lock);
1935
1936         return 0;
1937 }
1938
1939 static int wacom_reset_resume(struct hid_device *hdev)
1940 {
1941         return wacom_resume(hdev);
1942 }
1943 #endif /* CONFIG_PM */
1944
1945 static struct hid_driver wacom_driver = {
1946         .name =         "wacom",
1947         .id_table =     wacom_ids,
1948         .probe =        wacom_probe,
1949         .remove =       wacom_remove,
1950         .report =       wacom_wac_report,
1951 #ifdef CONFIG_PM
1952         .resume =       wacom_resume,
1953         .reset_resume = wacom_reset_resume,
1954 #endif
1955         .raw_event =    wacom_raw_event,
1956 };
1957 module_hid_driver(wacom_driver);
1958
1959 MODULE_VERSION(DRIVER_VERSION);
1960 MODULE_AUTHOR(DRIVER_AUTHOR);
1961 MODULE_DESCRIPTION(DRIVER_DESC);
1962 MODULE_LICENSE(DRIVER_LICENSE);