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 = 0;
 497
 498         /*
 499          * The wireless device HID is basic and layout conflicts with
 500          * other tablets (monitor and touch interface can look like pen).
 501          * Skip the query for this type and modify defaults based on
 502          * interface number.
 503          */
 504         if (features->type == WIRELESS) {
 505                 if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
 506                         features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
 507                 else
 508                         features->device_type = WACOM_DEVICETYPE_NONE;
 509                 return;
 510         }
 511
 512         wacom_parse_hid(hdev, features);
 513 }
 514
 515 struct wacom_hdev_data {
 516         struct list_head list;
 517         struct kref kref;
 518         struct hid_device *dev;
 519         struct wacom_shared shared;
 520 };
 521
 522 static LIST_HEAD(wacom_udev_list);
 523 static DEFINE_MUTEX(wacom_udev_list_lock);
 524
 525 static bool wacom_are_sibling(struct hid_device *hdev,
 526                 struct hid_device *sibling)
 527 {
 528         struct wacom *wacom = hid_get_drvdata(hdev);
 529         struct wacom_features *features = &wacom->wacom_wac.features;
 530         int vid = features->oVid;
 531         int pid = features->oPid;
 532         int n1,n2;
 533
 534         if (vid == 0 && pid == 0) {
 535                 vid = hdev->vendor;
 536                 pid = hdev->product;
 537         }
 538
 539         if (vid != sibling->vendor || pid != sibling->product)
 540                 return false;
 541
 542         /* Compare the physical path. */
 543         n1 = strrchr(hdev->phys, '.') - hdev->phys;
 544         n2 = strrchr(sibling->phys, '.') - sibling->phys;
 545         if (n1 != n2 || n1 <= 0 || n2 <= 0)
 546                 return false;
 547
 548         return !strncmp(hdev->phys, sibling->phys, n1);
 549 }
 550
 551 static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
 552 {
 553         struct wacom_hdev_data *data;
 554
 555         list_for_each_entry(data, &wacom_udev_list, list) {
 556                 if (wacom_are_sibling(hdev, data->dev)) {
 557                         kref_get(&data->kref);
 558                         return data;
 559                 }
 560         }
 561
 562         return NULL;
 563 }
 564
 565 static int wacom_add_shared_data(struct hid_device *hdev)
 566 {
 567         struct wacom *wacom = hid_get_drvdata(hdev);
 568         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 569         struct wacom_hdev_data *data;
 570         int retval = 0;
 571
 572         mutex_lock(&wacom_udev_list_lock);
 573
 574         data = wacom_get_hdev_data(hdev);
 575         if (!data) {
 576                 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
 577                 if (!data) {
 578                         retval = -ENOMEM;
 579                         goto out;
 580                 }
 581
 582                 kref_init(&data->kref);
 583                 data->dev = hdev;
 584                 list_add_tail(&data->list, &wacom_udev_list);
 585         }
 586
 587         wacom_wac->shared = &data->shared;
 588
 589         if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
 590                 wacom_wac->shared->touch = hdev;
 591         else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
 592                 wacom_wac->shared->pen = hdev;
 593
 594 out:
 595         mutex_unlock(&wacom_udev_list_lock);
 596         return retval;
 597 }
 598
 599 static void wacom_release_shared_data(struct kref *kref)
 600 {
 601         struct wacom_hdev_data *data =
 602                 container_of(kref, struct wacom_hdev_data, kref);
 603
 604         mutex_lock(&wacom_udev_list_lock);
 605         list_del(&data->list);
 606         mutex_unlock(&wacom_udev_list_lock);
 607
 608         kfree(data);
 609 }
 610
 611 static void wacom_remove_shared_data(struct wacom *wacom)
 612 {
 613         struct wacom_hdev_data *data;
 614         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 615
 616         if (wacom_wac->shared) {
 617                 data = container_of(wacom_wac->shared, struct wacom_hdev_data,
 618                                     shared);
 619
 620                 if (wacom_wac->shared->touch == wacom->hdev)
 621                         wacom_wac->shared->touch = NULL;
 622                 else if (wacom_wac->shared->pen == wacom->hdev)
 623                         wacom_wac->shared->pen = NULL;
 624
 625                 kref_put(&data->kref, wacom_release_shared_data);
 626                 wacom_wac->shared = NULL;
 627         }
 628 }
 629
 630 static int wacom_led_control(struct wacom *wacom)
 631 {
 632         unsigned char *buf;
 633         int retval;
 634         unsigned char report_id = WAC_CMD_LED_CONTROL;
 635         int buf_size = 9;
 636
 637         if (wacom->wacom_wac.pid) { /* wireless connected */
 638                 report_id = WAC_CMD_WL_LED_CONTROL;
 639                 buf_size = 13;
 640         }
 641         buf = kzalloc(buf_size, GFP_KERNEL);
 642         if (!buf)
 643                 return -ENOMEM;
 644
 645         if (wacom->wacom_wac.features.type >= INTUOS5S &&
 646             wacom->wacom_wac.features.type <= INTUOSPL) {
 647                 /*
 648                  * Touch Ring and crop mark LED luminance may take on
 649                  * one of four values:
 650                  *    0 = Low; 1 = Medium; 2 = High; 3 = Off
 651                  */
 652                 int ring_led = wacom->led.select[0] & 0x03;
 653                 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
 654                 int crop_lum = 0;
 655                 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
 656
 657                 buf[0] = report_id;
 658                 if (wacom->wacom_wac.pid) {
 659                         wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
 660                                          buf, buf_size, WAC_CMD_RETRIES);
 661                         buf[0] = report_id;
 662                         buf[4] = led_bits;
 663                 } else
 664                         buf[1] = led_bits;
 665         }
 666         else {
 667                 int led = wacom->led.select[0] | 0x4;
 668
 669                 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
 670                     wacom->wacom_wac.features.type == WACOM_24HD)
 671                         led |= (wacom->led.select[1] << 4) | 0x40;
 672
 673                 buf[0] = report_id;
 674                 buf[1] = led;
 675                 buf[2] = wacom->led.llv;
 676                 buf[3] = wacom->led.hlv;
 677                 buf[4] = wacom->led.img_lum;
 678         }
 679
 680         retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
 681                                   WAC_CMD_RETRIES);
 682         kfree(buf);
 683
 684         return retval;
 685 }
 686
 687 static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
 688                 const unsigned len, const void *img)
 689 {
 690         unsigned char *buf;
 691         int i, retval;
 692         const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
 693
 694         buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
 695         if (!buf)
 696                 return -ENOMEM;
 697
 698         /* Send 'start' command */
 699         buf[0] = WAC_CMD_ICON_START;
 700         buf[1] = 1;
 701         retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
 702                                   WAC_CMD_RETRIES);
 703         if (retval < 0)
 704                 goto out;
 705
 706         buf[0] = xfer_id;
 707         buf[1] = button_id & 0x07;
 708         for (i = 0; i < 4; i++) {
 709                 buf[2] = i;
 710                 memcpy(buf + 3, img + i * chunk_len, chunk_len);
 711
 712                 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
 713                                           buf, chunk_len + 3, WAC_CMD_RETRIES);
 714                 if (retval < 0)
 715                         break;
 716         }
 717
 718         /* Send 'stop' */
 719         buf[0] = WAC_CMD_ICON_START;
 720         buf[1] = 0;
 721         wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
 722                          WAC_CMD_RETRIES);
 723
 724 out:
 725         kfree(buf);
 726         return retval;
 727 }
 728
 729 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
 730                                       const char *buf, size_t count)
 731 {
 732         struct hid_device *hdev = to_hid_device(dev);
 733         struct wacom *wacom = hid_get_drvdata(hdev);
 734         unsigned int id;
 735         int err;
 736
 737         err = kstrtouint(buf, 10, &id);
 738         if (err)
 739                 return err;
 740
 741         mutex_lock(&wacom->lock);
 742
 743         wacom->led.select[set_id] = id & 0x3;
 744         err = wacom_led_control(wacom);
 745
 746         mutex_unlock(&wacom->lock);
 747
 748         return err < 0 ? err : count;
 749 }
 750
 751 #define DEVICE_LED_SELECT_ATTR(SET_ID)                                  \
 752 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev,     \
 753         struct device_attribute *attr, const char *buf, size_t count)   \
 754 {                                                                       \
 755         return wacom_led_select_store(dev, SET_ID, buf, count);         \
 756 }                                                                       \
 757 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,      \
 758         struct device_attribute *attr, char *buf)                       \
 759 {                                                                       \
 760         struct hid_device *hdev = to_hid_device(dev);\
 761         struct wacom *wacom = hid_get_drvdata(hdev);                    \
 762         return scnprintf(buf, PAGE_SIZE, "%d\n",                        \
 763                          wacom->led.select[SET_ID]);                    \
 764 }                                                                       \
 765 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,       \
 766                     wacom_led##SET_ID##_select_show,                    \
 767                     wacom_led##SET_ID##_select_store)
 768
 769 DEVICE_LED_SELECT_ATTR(0);
 770 DEVICE_LED_SELECT_ATTR(1);
 771
 772 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
 773                                      const char *buf, size_t count)
 774 {
 775         unsigned int value;
 776         int err;
 777
 778         err = kstrtouint(buf, 10, &value);
 779         if (err)
 780                 return err;
 781
 782         mutex_lock(&wacom->lock);
 783
 784         *dest = value & 0x7f;
 785         err = wacom_led_control(wacom);
 786
 787         mutex_unlock(&wacom->lock);
 788
 789         return err < 0 ? err : count;
 790 }
 791
 792 #define DEVICE_LUMINANCE_ATTR(name, field)                              \
 793 static ssize_t wacom_##name##_luminance_store(struct device *dev,       \
 794         struct device_attribute *attr, const char *buf, size_t count)   \
 795 {                                                                       \
 796         struct hid_device *hdev = to_hid_device(dev);\
 797         struct wacom *wacom = hid_get_drvdata(hdev);                    \
 798                                                                         \
 799         return wacom_luminance_store(wacom, &wacom->led.field,          \
 800                                      buf, count);                       \
 801 }                                                                       \
 802 static ssize_t wacom_##name##_luminance_show(struct device *dev,        \
 803         struct device_attribute *attr, char *buf)                       \
 804 {                                                                       \
 805         struct wacom *wacom = dev_get_drvdata(dev);                     \
 806         return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field);     \
 807 }                                                                       \
 808 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,                  \
 809                    wacom_##name##_luminance_show,                       \
 810                    wacom_##name##_luminance_store)
 811
 812 DEVICE_LUMINANCE_ATTR(status0, llv);
 813 DEVICE_LUMINANCE_ATTR(status1, hlv);
 814 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
 815
 816 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
 817                                         const char *buf, size_t count)
 818 {
 819         struct hid_device *hdev = to_hid_device(dev);
 820         struct wacom *wacom = hid_get_drvdata(hdev);
 821         int err;
 822         unsigned len;
 823         u8 xfer_id;
 824
 825         if (hdev->bus == BUS_BLUETOOTH) {
 826                 len = 256;
 827                 xfer_id = WAC_CMD_ICON_BT_XFER;
 828         } else {
 829                 len = 1024;
 830                 xfer_id = WAC_CMD_ICON_XFER;
 831         }
 832
 833         if (count != len)
 834                 return -EINVAL;
 835
 836         mutex_lock(&wacom->lock);
 837
 838         err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
 839
 840         mutex_unlock(&wacom->lock);
 841
 842         return err < 0 ? err : count;
 843 }
 844
 845 #define DEVICE_BTNIMG_ATTR(BUTTON_ID)                                   \
 846 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev,      \
 847         struct device_attribute *attr, const char *buf, size_t count)   \
 848 {                                                                       \
 849         return wacom_button_image_store(dev, BUTTON_ID, buf, count);    \
 850 }                                                                       \
 851 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,        \
 852                    NULL, wacom_btnimg##BUTTON_ID##_store)
 853
 854 DEVICE_BTNIMG_ATTR(0);
 855 DEVICE_BTNIMG_ATTR(1);
 856 DEVICE_BTNIMG_ATTR(2);
 857 DEVICE_BTNIMG_ATTR(3);
 858 DEVICE_BTNIMG_ATTR(4);
 859 DEVICE_BTNIMG_ATTR(5);
 860 DEVICE_BTNIMG_ATTR(6);
 861 DEVICE_BTNIMG_ATTR(7);
 862
 863 static struct attribute *cintiq_led_attrs[] = {
 864         &dev_attr_status_led0_select.attr,
 865         &dev_attr_status_led1_select.attr,
 866         NULL
 867 };
 868
 869 static struct attribute_group cintiq_led_attr_group = {
 870         .name = "wacom_led",
 871         .attrs = cintiq_led_attrs,
 872 };
 873
 874 static struct attribute *intuos4_led_attrs[] = {
 875         &dev_attr_status0_luminance.attr,
 876         &dev_attr_status1_luminance.attr,
 877         &dev_attr_status_led0_select.attr,
 878         &dev_attr_buttons_luminance.attr,
 879         &dev_attr_button0_rawimg.attr,
 880         &dev_attr_button1_rawimg.attr,
 881         &dev_attr_button2_rawimg.attr,
 882         &dev_attr_button3_rawimg.attr,
 883         &dev_attr_button4_rawimg.attr,
 884         &dev_attr_button5_rawimg.attr,
 885         &dev_attr_button6_rawimg.attr,
 886         &dev_attr_button7_rawimg.attr,
 887         NULL
 888 };
 889
 890 static struct attribute_group intuos4_led_attr_group = {
 891         .name = "wacom_led",
 892         .attrs = intuos4_led_attrs,
 893 };
 894
 895 static struct attribute *intuos5_led_attrs[] = {
 896         &dev_attr_status0_luminance.attr,
 897         &dev_attr_status_led0_select.attr,
 898         NULL
 899 };
 900
 901 static struct attribute_group intuos5_led_attr_group = {
 902         .name = "wacom_led",
 903         .attrs = intuos5_led_attrs,
 904 };
 905
 906 static int wacom_initialize_leds(struct wacom *wacom)
 907 {
 908         int error;
 909
 910         if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
 911                 return 0;
 912
 913         /* Initialize default values */
 914         switch (wacom->wacom_wac.features.type) {
 915         case INTUOS4S:
 916         case INTUOS4:
 917         case INTUOS4WL:
 918         case INTUOS4L:
 919                 wacom->led.select[0] = 0;
 920                 wacom->led.select[1] = 0;
 921                 wacom->led.llv = 10;
 922                 wacom->led.hlv = 20;
 923                 wacom->led.img_lum = 10;
 924                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 925                                            &intuos4_led_attr_group);
 926                 break;
 927
 928         case WACOM_24HD:
 929         case WACOM_21UX2:
 930                 wacom->led.select[0] = 0;
 931                 wacom->led.select[1] = 0;
 932                 wacom->led.llv = 0;
 933                 wacom->led.hlv = 0;
 934                 wacom->led.img_lum = 0;
 935
 936                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 937                                            &cintiq_led_attr_group);
 938                 break;
 939
 940         case INTUOS5S:
 941         case INTUOS5:
 942         case INTUOS5L:
 943         case INTUOSPS:
 944         case INTUOSPM:
 945         case INTUOSPL:
 946                 wacom->led.select[0] = 0;
 947                 wacom->led.select[1] = 0;
 948                 wacom->led.llv = 32;
 949                 wacom->led.hlv = 0;
 950                 wacom->led.img_lum = 0;
 951
 952                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 953                                           &intuos5_led_attr_group);
 954                 break;
 955
 956         default:
 957                 return 0;
 958         }
 959
 960         if (error) {
 961                 hid_err(wacom->hdev,
 962                         "cannot create sysfs group err: %d\n", error);
 963                 return error;
 964         }
 965         wacom_led_control(wacom);
 966         wacom->led_initialized = true;
 967
 968         return 0;
 969 }
 970
 971 static void wacom_destroy_leds(struct wacom *wacom)
 972 {
 973         if (!wacom->led_initialized)
 974                 return;
 975
 976         if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
 977                 return;
 978
 979         wacom->led_initialized = false;
 980
 981         switch (wacom->wacom_wac.features.type) {
 982         case INTUOS4S:
 983         case INTUOS4:
 984         case INTUOS4WL:
 985         case INTUOS4L:
 986                 sysfs_remove_group(&wacom->hdev->dev.kobj,
 987                                    &intuos4_led_attr_group);
 988                 break;
 989
 990         case WACOM_24HD:
 991         case WACOM_21UX2:
 992                 sysfs_remove_group(&wacom->hdev->dev.kobj,
 993                                    &cintiq_led_attr_group);
 994                 break;
 995
 996         case INTUOS5S:
 997         case INTUOS5:
 998         case INTUOS5L:
 999         case INTUOSPS:
1000         case INTUOSPM:
1001         case INTUOSPL:
1002                 sysfs_remove_group(&wacom->hdev->dev.kobj,
1003                                    &intuos5_led_attr_group);
1004                 break;
1005         }
1006 }
1007
1008 static enum power_supply_property wacom_battery_props[] = {
1009         POWER_SUPPLY_PROP_PRESENT,
1010         POWER_SUPPLY_PROP_STATUS,
1011         POWER_SUPPLY_PROP_SCOPE,
1012         POWER_SUPPLY_PROP_CAPACITY
1013 };
1014
1015 static enum power_supply_property wacom_ac_props[] = {
1016         POWER_SUPPLY_PROP_PRESENT,
1017         POWER_SUPPLY_PROP_ONLINE,
1018         POWER_SUPPLY_PROP_SCOPE,
1019 };
1020
1021 static int wacom_battery_get_property(struct power_supply *psy,
1022                                       enum power_supply_property psp,
1023                                       union power_supply_propval *val)
1024 {
1025         struct wacom *wacom = power_supply_get_drvdata(psy);
1026         int ret = 0;
1027
1028         switch (psp) {
1029                 case POWER_SUPPLY_PROP_PRESENT:
1030                         val->intval = wacom->wacom_wac.bat_connected;
1031                         break;
1032                 case POWER_SUPPLY_PROP_SCOPE:
1033                         val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1034                         break;
1035                 case POWER_SUPPLY_PROP_CAPACITY:
1036                         val->intval =
1037                                 wacom->wacom_wac.battery_capacity;
1038                         break;
1039                 case POWER_SUPPLY_PROP_STATUS:
1040                         if (wacom->wacom_wac.bat_charging)
1041                                 val->intval = POWER_SUPPLY_STATUS_CHARGING;
1042                         else if (wacom->wacom_wac.battery_capacity == 100 &&
1043                                     wacom->wacom_wac.ps_connected)
1044                                 val->intval = POWER_SUPPLY_STATUS_FULL;
1045                         else if (wacom->wacom_wac.ps_connected)
1046                                 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1047                         else
1048                                 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1049                         break;
1050                 default:
1051                         ret = -EINVAL;
1052                         break;
1053         }
1054
1055         return ret;
1056 }
1057
1058 static int wacom_ac_get_property(struct power_supply *psy,
1059                                 enum power_supply_property psp,
1060                                 union power_supply_propval *val)
1061 {
1062         struct wacom *wacom = power_supply_get_drvdata(psy);
1063         int ret = 0;
1064
1065         switch (psp) {
1066         case POWER_SUPPLY_PROP_PRESENT:
1067                 /* fall through */
1068         case POWER_SUPPLY_PROP_ONLINE:
1069                 val->intval = wacom->wacom_wac.ps_connected;
1070                 break;
1071         case POWER_SUPPLY_PROP_SCOPE:
1072                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
1073                 break;
1074         default:
1075                 ret = -EINVAL;
1076                 break;
1077         }
1078         return ret;
1079 }
1080
1081 static int wacom_initialize_battery(struct wacom *wacom)
1082 {
1083         static atomic_t battery_no = ATOMIC_INIT(0);
1084         struct power_supply_config psy_cfg = { .drv_data = wacom, };
1085         unsigned long n;
1086
1087         if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
1088                 struct power_supply_desc *bat_desc = &wacom->battery_desc;
1089                 struct power_supply_desc *ac_desc = &wacom->ac_desc;
1090                 n = atomic_inc_return(&battery_no) - 1;
1091
1092                 bat_desc->properties = wacom_battery_props;
1093                 bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
1094                 bat_desc->get_property = wacom_battery_get_property;
1095                 sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
1096                 bat_desc->name = wacom->wacom_wac.bat_name;
1097                 bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
1098                 bat_desc->use_for_apm = 0;
1099
1100                 ac_desc->properties = wacom_ac_props;
1101                 ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
1102                 ac_desc->get_property = wacom_ac_get_property;
1103                 sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
1104                 ac_desc->name = wacom->wacom_wac.ac_name;
1105                 ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
1106                 ac_desc->use_for_apm = 0;
1107
1108                 wacom->battery = power_supply_register(&wacom->hdev->dev,
1109                                               &wacom->battery_desc, &psy_cfg);
1110                 if (IS_ERR(wacom->battery))
1111                         return PTR_ERR(wacom->battery);
1112
1113                 power_supply_powers(wacom->battery, &wacom->hdev->dev);
1114
1115                 wacom->ac = power_supply_register(&wacom->hdev->dev,
1116                                                   &wacom->ac_desc,
1117                                                   &psy_cfg);
1118                 if (IS_ERR(wacom->ac)) {
1119                         power_supply_unregister(wacom->battery);
1120                         return PTR_ERR(wacom->ac);
1121                 }
1122
1123                 power_supply_powers(wacom->ac, &wacom->hdev->dev);
1124         }
1125
1126         return 0;
1127 }
1128
1129 static void wacom_destroy_battery(struct wacom *wacom)
1130 {
1131         if (wacom->battery) {
1132                 power_supply_unregister(wacom->battery);
1133                 wacom->battery = NULL;
1134                 power_supply_unregister(wacom->ac);
1135                 wacom->ac = NULL;
1136         }
1137 }
1138
1139 static ssize_t wacom_show_speed(struct device *dev,
1140                                 struct device_attribute
1141                                 *attr, char *buf)
1142 {
1143         struct hid_device *hdev = to_hid_device(dev);
1144         struct wacom *wacom = hid_get_drvdata(hdev);
1145
1146         return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
1147 }
1148
1149 static ssize_t wacom_store_speed(struct device *dev,
1150                                 struct device_attribute *attr,
1151                                 const char *buf, size_t count)
1152 {
1153         struct hid_device *hdev = to_hid_device(dev);
1154         struct wacom *wacom = hid_get_drvdata(hdev);
1155         u8 new_speed;
1156
1157         if (kstrtou8(buf, 0, &new_speed))
1158                 return -EINVAL;
1159
1160         if (new_speed != 0 && new_speed != 1)
1161                 return -EINVAL;
1162
1163         wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1164
1165         return count;
1166 }
1167
1168 static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1169                 wacom_show_speed, wacom_store_speed);
1170
1171
1172 static ssize_t wacom_show_remote_mode(struct kobject *kobj,
1173                                       struct kobj_attribute *kattr,
1174                                       char *buf, int index)
1175 {
1176         struct device *dev = kobj_to_dev(kobj->parent);
1177         struct hid_device *hdev = to_hid_device(dev);
1178         struct wacom *wacom = hid_get_drvdata(hdev);
1179         u8 mode;
1180
1181         mode = wacom->led.select[index];
1182         if (mode >= 0 && mode < 3)
1183                 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
1184         else
1185                 return snprintf(buf, PAGE_SIZE, "%d\n", -1);
1186 }
1187
1188 #define DEVICE_EKR_ATTR_GROUP(SET_ID)                                   \
1189 static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj,   \
1190                                struct kobj_attribute *kattr, char *buf) \
1191 {                                                                       \
1192         return wacom_show_remote_mode(kobj, kattr, buf, SET_ID);        \
1193 }                                                                       \
1194 static struct kobj_attribute remote##SET_ID##_mode_attr = {             \
1195         .attr = {.name = "remote_mode",                                 \
1196                 .mode = DEV_ATTR_RO_PERM},                              \
1197         .show = wacom_show_remote##SET_ID##_mode,                       \
1198 };                                                                      \
1199 static struct attribute *remote##SET_ID##_serial_attrs[] = {            \
1200         &remote##SET_ID##_mode_attr.attr,                               \
1201         NULL                                                            \
1202 };                                                                      \
1203 static struct attribute_group remote##SET_ID##_serial_group = {         \
1204         .name = NULL,                                                   \
1205         .attrs = remote##SET_ID##_serial_attrs,                         \
1206 }
1207
1208 DEVICE_EKR_ATTR_GROUP(0);
1209 DEVICE_EKR_ATTR_GROUP(1);
1210 DEVICE_EKR_ATTR_GROUP(2);
1211 DEVICE_EKR_ATTR_GROUP(3);
1212 DEVICE_EKR_ATTR_GROUP(4);
1213
1214 int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, int index)
1215 {
1216         int error = 0;
1217         char *buf;
1218         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1219
1220         wacom_wac->serial[index] = serial;
1221
1222         buf = kzalloc(WAC_REMOTE_SERIAL_MAX_STRLEN, GFP_KERNEL);
1223         if (!buf)
1224                 return -ENOMEM;
1225         snprintf(buf, WAC_REMOTE_SERIAL_MAX_STRLEN, "%d", serial);
1226         wacom->remote_group[index].name = buf;
1227
1228         error = sysfs_create_group(wacom->remote_dir,
1229                                    &wacom->remote_group[index]);
1230         if (error) {
1231                 hid_err(wacom->hdev,
1232                         "cannot create sysfs group err: %d\n", error);
1233                 kobject_put(wacom->remote_dir);
1234                 return error;
1235         }
1236
1237         return 0;
1238 }
1239
1240 void wacom_remote_destroy_attr_group(struct wacom *wacom, __u32 serial)
1241 {
1242         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1243         int i;
1244
1245         if (!serial)
1246                 return;
1247
1248         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1249                 if (wacom_wac->serial[i] == serial) {
1250                         wacom_wac->serial[i] = 0;
1251                         wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
1252                         if (wacom->remote_group[i].name) {
1253                                 sysfs_remove_group(wacom->remote_dir,
1254                                                    &wacom->remote_group[i]);
1255                                 kfree(wacom->remote_group[i].name);
1256                                 wacom->remote_group[i].name = NULL;
1257                         }
1258                 }
1259         }
1260 }
1261
1262 static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
1263 {
1264         const size_t buf_size = 2;
1265         unsigned char *buf;
1266         int retval;
1267
1268         buf = kzalloc(buf_size, GFP_KERNEL);
1269         if (!buf)
1270                 return -ENOMEM;
1271
1272         buf[0] = WAC_CMD_DELETE_PAIRING;
1273         buf[1] = selector;
1274
1275         retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
1276                                   buf_size, WAC_CMD_RETRIES);
1277         kfree(buf);
1278
1279         return retval;
1280 }
1281
1282 static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
1283                                          struct kobj_attribute *attr,
1284                                          const char *buf, size_t count)
1285 {
1286         unsigned char selector = 0;
1287         struct device *dev = kobj_to_dev(kobj->parent);
1288         struct hid_device *hdev = to_hid_device(dev);
1289         struct wacom *wacom = hid_get_drvdata(hdev);
1290         int err;
1291
1292         if (!strncmp(buf, "*\n", 2)) {
1293                 selector = WAC_CMD_UNPAIR_ALL;
1294         } else {
1295                 hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
1296                          buf);
1297                 return -1;
1298         }
1299
1300         mutex_lock(&wacom->lock);
1301
1302         err = wacom_cmd_unpair_remote(wacom, selector);
1303         mutex_unlock(&wacom->lock);
1304
1305         return err < 0 ? err : count;
1306 }
1307
1308 static struct kobj_attribute unpair_remote_attr = {
1309         .attr = {.name = "unpair_remote", .mode = 0200},
1310         .store = wacom_store_unpair_remote,
1311 };
1312
1313 static const struct attribute *remote_unpair_attrs[] = {
1314         &unpair_remote_attr.attr,
1315         NULL
1316 };
1317
1318 static int wacom_initialize_remote(struct wacom *wacom)
1319 {
1320         int error = 0;
1321         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1322         int i;
1323
1324         if (wacom->wacom_wac.features.type != REMOTE)
1325                 return 0;
1326
1327         wacom->remote_group[0] = remote0_serial_group;
1328         wacom->remote_group[1] = remote1_serial_group;
1329         wacom->remote_group[2] = remote2_serial_group;
1330         wacom->remote_group[3] = remote3_serial_group;
1331         wacom->remote_group[4] = remote4_serial_group;
1332
1333         wacom->remote_dir = kobject_create_and_add("wacom_remote",
1334                                                    &wacom->hdev->dev.kobj);
1335         if (!wacom->remote_dir)
1336                 return -ENOMEM;
1337
1338         error = sysfs_create_files(wacom->remote_dir, remote_unpair_attrs);
1339
1340         if (error) {
1341                 hid_err(wacom->hdev,
1342                         "cannot create sysfs group err: %d\n", error);
1343                 return error;
1344         }
1345
1346         for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1347                 wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
1348                 wacom_wac->serial[i] = 0;
1349         }
1350
1351         return 0;
1352 }
1353
1354 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1355 {
1356         struct input_dev *input_dev;
1357         struct hid_device *hdev = wacom->hdev;
1358         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1359
1360         input_dev = input_allocate_device();
1361         if (!input_dev)
1362                 return NULL;
1363
1364         input_dev->name = wacom_wac->features.name;
1365         input_dev->phys = hdev->phys;
1366         input_dev->dev.parent = &hdev->dev;
1367         input_dev->open = wacom_open;
1368         input_dev->close = wacom_close;
1369         input_dev->uniq = hdev->uniq;
1370         input_dev->id.bustype = hdev->bus;
1371         input_dev->id.vendor  = hdev->vendor;
1372         input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1373         input_dev->id.version = hdev->version;
1374         input_set_drvdata(input_dev, wacom);
1375
1376         return input_dev;
1377 }
1378
1379 static void wacom_clean_inputs(struct wacom *wacom)
1380 {
1381         if (wacom->wacom_wac.pen_input) {
1382                 if (wacom->wacom_wac.pen_registered)
1383                         input_unregister_device(wacom->wacom_wac.pen_input);
1384                 else
1385                         input_free_device(wacom->wacom_wac.pen_input);
1386         }
1387         if (wacom->wacom_wac.touch_input) {
1388                 if (wacom->wacom_wac.touch_registered)
1389                         input_unregister_device(wacom->wacom_wac.touch_input);
1390                 else
1391                         input_free_device(wacom->wacom_wac.touch_input);
1392         }
1393         if (wacom->wacom_wac.pad_input) {
1394                 if (wacom->wacom_wac.pad_registered)
1395                         input_unregister_device(wacom->wacom_wac.pad_input);
1396                 else
1397                         input_free_device(wacom->wacom_wac.pad_input);
1398         }
1399         kobject_put(wacom->remote_dir);
1400         wacom->wacom_wac.pen_input = NULL;
1401         wacom->wacom_wac.touch_input = NULL;
1402         wacom->wacom_wac.pad_input = NULL;
1403         wacom->wacom_wac.pen_registered = false;
1404         wacom->wacom_wac.touch_registered = false;
1405         wacom->wacom_wac.pad_registered = false;
1406         wacom_destroy_leds(wacom);
1407 }
1408
1409 static int wacom_allocate_inputs(struct wacom *wacom)
1410 {
1411         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1412
1413         wacom_wac->pen_input = wacom_allocate_input(wacom);
1414         wacom_wac->touch_input = wacom_allocate_input(wacom);
1415         wacom_wac->pad_input = wacom_allocate_input(wacom);
1416         if (!wacom_wac->pen_input || !wacom_wac->touch_input || !wacom_wac->pad_input) {
1417                 wacom_clean_inputs(wacom);
1418                 return -ENOMEM;
1419         }
1420
1421         wacom_wac->pen_input->name = wacom_wac->pen_name;
1422         wacom_wac->touch_input->name = wacom_wac->touch_name;
1423         wacom_wac->pad_input->name = wacom_wac->pad_name;
1424
1425         return 0;
1426 }
1427
1428 static int wacom_register_inputs(struct wacom *wacom)
1429 {
1430         struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
1431         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1432         int error = 0;
1433
1434         pen_input_dev = wacom_wac->pen_input;
1435         touch_input_dev = wacom_wac->touch_input;
1436         pad_input_dev = wacom_wac->pad_input;
1437
1438         if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
1439                 return -EINVAL;
1440
1441         error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
1442         if (error) {
1443                 /* no pen in use on this interface */
1444                 input_free_device(pen_input_dev);
1445                 wacom_wac->pen_input = NULL;
1446                 pen_input_dev = NULL;
1447         } else {
1448                 error = input_register_device(pen_input_dev);
1449                 if (error)
1450                         goto fail_register_pen_input;
1451                 wacom_wac->pen_registered = true;
1452         }
1453
1454         error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
1455         if (error) {
1456                 /* no touch in use on this interface */
1457                 input_free_device(touch_input_dev);
1458                 wacom_wac->touch_input = NULL;
1459                 touch_input_dev = NULL;
1460         } else {
1461                 error = input_register_device(touch_input_dev);
1462                 if (error)
1463                         goto fail_register_touch_input;
1464                 wacom_wac->touch_registered = true;
1465         }
1466
1467         error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1468         if (error) {
1469                 /* no pad in use on this interface */
1470                 input_free_device(pad_input_dev);
1471                 wacom_wac->pad_input = NULL;
1472                 pad_input_dev = NULL;
1473         } else {
1474                 error = input_register_device(pad_input_dev);
1475                 if (error)
1476                         goto fail_register_pad_input;
1477                 wacom_wac->pad_registered = true;
1478
1479                 error = wacom_initialize_leds(wacom);
1480                 if (error)
1481                         goto fail_leds;
1482
1483                 error = wacom_initialize_remote(wacom);
1484                 if (error)
1485                         goto fail_remote;
1486         }
1487
1488         return 0;
1489
1490 fail_remote:
1491         wacom_destroy_leds(wacom);
1492 fail_leds:
1493         input_unregister_device(pad_input_dev);
1494         pad_input_dev = NULL;
1495         wacom_wac->pad_registered = false;
1496 fail_register_pad_input:
1497         if (touch_input_dev)
1498                 input_unregister_device(touch_input_dev);
1499         wacom_wac->touch_input = NULL;
1500         wacom_wac->touch_registered = false;
1501 fail_register_touch_input:
1502         if (pen_input_dev)
1503                 input_unregister_device(pen_input_dev);
1504         wacom_wac->pen_input = NULL;
1505         wacom_wac->pen_registered = false;
1506 fail_register_pen_input:
1507         return error;
1508 }
1509
1510 /*
1511  * Not all devices report physical dimensions from HID.
1512  * Compute the default from hardcoded logical dimension
1513  * and resolution before driver overwrites them.
1514  */
1515 static void wacom_set_default_phy(struct wacom_features *features)
1516 {
1517         if (features->x_resolution) {
1518                 features->x_phy = (features->x_max * 100) /
1519                                         features->x_resolution;
1520                 features->y_phy = (features->y_max * 100) /
1521                                         features->y_resolution;
1522         }
1523 }
1524
1525 static void wacom_calculate_res(struct wacom_features *features)
1526 {
1527         /* set unit to "100th of a mm" for devices not reported by HID */
1528         if (!features->unit) {
1529                 features->unit = 0x11;
1530                 features->unitExpo = -3;
1531         }
1532
1533         features->x_resolution = wacom_calc_hid_res(features->x_max,
1534                                                     features->x_phy,
1535                                                     features->unit,
1536                                                     features->unitExpo);
1537         features->y_resolution = wacom_calc_hid_res(features->y_max,
1538                                                     features->y_phy,
1539                                                     features->unit,
1540                                                     features->unitExpo);
1541 }
1542
1543 void wacom_battery_work(struct work_struct *work)
1544 {
1545         struct wacom *wacom = container_of(work, struct wacom, work);
1546
1547         if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1548              !wacom->battery) {
1549                 wacom_initialize_battery(wacom);
1550         }
1551         else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1552                  wacom->battery) {
1553                 wacom_destroy_battery(wacom);
1554         }
1555 }
1556
1557 static size_t wacom_compute_pktlen(struct hid_device *hdev)
1558 {
1559         struct hid_report_enum *report_enum;
1560         struct hid_report *report;
1561         size_t size = 0;
1562
1563         report_enum = hdev->report_enum + HID_INPUT_REPORT;
1564
1565         list_for_each_entry(report, &report_enum->report_list, list) {
1566                 size_t report_size = hid_report_len(report);
1567                 if (report_size > size)
1568                         size = report_size;
1569         }
1570
1571         return size;
1572 }
1573
1574 static void wacom_update_name(struct wacom *wacom, const char *suffix)
1575 {
1576         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1577         struct wacom_features *features = &wacom_wac->features;
1578         char name[WACOM_NAME_MAX];
1579
1580         /* Generic devices name unspecified */
1581         if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
1582                 if (strstr(wacom->hdev->name, "Wacom") ||
1583                     strstr(wacom->hdev->name, "wacom") ||
1584                     strstr(wacom->hdev->name, "WACOM")) {
1585                         /* name is in HID descriptor, use it */
1586                         strlcpy(name, wacom->hdev->name, sizeof(name));
1587
1588                         /* strip out excess whitespaces */
1589                         while (1) {
1590                                 char *gap = strstr(name, "  ");
1591                                 if (gap == NULL)
1592                                         break;
1593                                 /* shift everything including the terminator */
1594                                 memmove(gap, gap+1, strlen(gap));
1595                         }
1596                         /* get rid of trailing whitespace */
1597                         if (name[strlen(name)-1] == ' ')
1598                                 name[strlen(name)-1] = '\0';
1599                 } else {
1600                         /* no meaningful name retrieved. use product ID */
1601                         snprintf(name, sizeof(name),
1602                                  "%s %X", features->name, wacom->hdev->product);
1603                 }
1604         } else {
1605                 strlcpy(name, features->name, sizeof(name));
1606         }
1607
1608         /* Append the device type to the name */
1609         snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
1610                 "%s%s Pen", name, suffix);
1611         snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
1612                 "%s%s Finger", name, suffix);
1613         snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1614                 "%s%s Pad", name, suffix);
1615 }
1616
1617 static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
1618 {
1619         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1620         struct wacom_features *features = &wacom_wac->features;
1621         struct hid_device *hdev = wacom->hdev;
1622         int error;
1623         unsigned int connect_mask = HID_CONNECT_HIDRAW;
1624
1625         features->pktlen = wacom_compute_pktlen(hdev);
1626         if (features->pktlen > WACOM_PKGLEN_MAX)
1627                 return -EINVAL;
1628
1629         error = wacom_allocate_inputs(wacom);
1630         if (error)
1631                 return error;
1632
1633         /*
1634          * Bamboo Pad has a generic hid handling for the Pen, and we switch it
1635          * into debug mode for the touch part.
1636          * We ignore the other interfaces.
1637          */
1638         if (features->type == BAMBOO_PAD) {
1639                 if (features->pktlen == WACOM_PKGLEN_PENABLED) {
1640                         features->type = HID_GENERIC;
1641                 } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
1642                            (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
1643                         error = -ENODEV;
1644                         goto fail_allocate_inputs;
1645                 }
1646         }
1647
1648         /* set the default size in case we do not get them from hid */
1649         wacom_set_default_phy(features);
1650
1651         /* Retrieve the physical and logical size for touch devices */
1652         wacom_retrieve_hid_descriptor(hdev, features);
1653         wacom_setup_device_quirks(wacom);
1654
1655         if (features->device_type == WACOM_DEVICETYPE_NONE &&
1656             features->type != WIRELESS) {
1657                 error = features->type == HID_GENERIC ? -ENODEV : 0;
1658
1659                 dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
1660                          hdev->name,
1661                          error ? "Ignoring" : "Assuming pen");
1662
1663                 if (error)
1664                         goto fail_parsed;
1665
1666                 features->device_type |= WACOM_DEVICETYPE_PEN;
1667         }
1668
1669         wacom_calculate_res(features);
1670
1671         wacom_update_name(wacom, wireless ? " (WL)" : "");
1672
1673         error = wacom_add_shared_data(hdev);
1674         if (error)
1675                 goto fail_shared_data;
1676
1677         if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
1678              (features->quirks & WACOM_QUIRK_BATTERY)) {
1679                 error = wacom_initialize_battery(wacom);
1680                 if (error)
1681                         goto fail_battery;
1682         }
1683
1684         error = wacom_register_inputs(wacom);
1685         if (error)
1686                 goto fail_register_inputs;
1687
1688         if (features->type == HID_GENERIC)
1689                 connect_mask |= HID_CONNECT_DRIVER;
1690
1691         /* Regular HID work starts now */
1692         error = hid_hw_start(hdev, connect_mask);
1693         if (error) {
1694                 hid_err(hdev, "hw start failed\n");
1695                 goto fail_hw_start;
1696         }
1697
1698         if (!wireless) {
1699                 /* Note that if query fails it is not a hard failure */
1700                 wacom_query_tablet_data(hdev, features);
1701         }
1702
1703         /* touch only Bamboo doesn't support pen */
1704         if ((features->type == BAMBOO_TOUCH) &&
1705             (features->device_type & WACOM_DEVICETYPE_PEN)) {
1706                 error = -ENODEV;
1707                 goto fail_hw_start;
1708         }
1709
1710         /* pen only Bamboo neither support touch nor pad */
1711         if ((features->type == BAMBOO_PEN) &&
1712             ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
1713             (features->device_type & WACOM_DEVICETYPE_PAD))) {
1714                 error = -ENODEV;
1715                 goto fail_hw_start;
1716         }
1717
1718         if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1719                 error = hid_hw_open(hdev);
1720
1721         if ((wacom_wac->features.type == INTUOSHT ||
1722             wacom_wac->features.type == INTUOSHT2) &&
1723             (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)) {
1724                         wacom_wac->shared->touch_input = wacom_wac->touch_input;
1725         }
1726
1727         return 0;
1728
1729 fail_hw_start:
1730         hid_hw_stop(hdev);
1731 fail_register_inputs:
1732         wacom_clean_inputs(wacom);
1733         wacom_destroy_battery(wacom);
1734 fail_battery:
1735         wacom_remove_shared_data(wacom);
1736 fail_shared_data:
1737 fail_parsed:
1738 fail_allocate_inputs:
1739         wacom_clean_inputs(wacom);
1740         return error;
1741 }
1742
1743 static void wacom_wireless_work(struct work_struct *work)
1744 {
1745         struct wacom *wacom = container_of(work, struct wacom, work);
1746         struct usb_device *usbdev = wacom->usbdev;
1747         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1748         struct hid_device *hdev1, *hdev2;
1749         struct wacom *wacom1, *wacom2;
1750         struct wacom_wac *wacom_wac1, *wacom_wac2;
1751         int error;
1752
1753         /*
1754          * Regardless if this is a disconnect or a new tablet,
1755          * remove any existing input and battery devices.
1756          */
1757
1758         wacom_destroy_battery(wacom);
1759
1760         /* Stylus interface */
1761         hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
1762         wacom1 = hid_get_drvdata(hdev1);
1763         wacom_wac1 = &(wacom1->wacom_wac);
1764         wacom_clean_inputs(wacom1);
1765
1766         /* Touch interface */
1767         hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
1768         wacom2 = hid_get_drvdata(hdev2);
1769         wacom_wac2 = &(wacom2->wacom_wac);
1770         wacom_clean_inputs(wacom2);
1771
1772         if (wacom_wac->pid == 0) {
1773                 hid_info(wacom->hdev, "wireless tablet disconnected\n");
1774                 wacom_wac1->shared->type = 0;
1775         } else {
1776                 const struct hid_device_id *id = wacom_ids;
1777
1778                 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1779                          wacom_wac->pid);
1780
1781                 while (id->bus) {
1782                         if (id->vendor == USB_VENDOR_ID_WACOM &&
1783                             id->product == wacom_wac->pid)
1784                                 break;
1785                         id++;
1786                 }
1787
1788                 if (!id->bus) {
1789                         hid_info(wacom->hdev, "ignoring unknown PID.\n");
1790                         return;
1791                 }
1792
1793                 /* Stylus interface */
1794                 wacom_wac1->features =
1795                         *((struct wacom_features *)id->driver_data);
1796
1797                 wacom_wac1->pid = wacom_wac->pid;
1798                 hid_hw_stop(hdev1);
1799                 error = wacom_parse_and_register(wacom1, true);
1800                 if (error)
1801                         goto fail;
1802
1803                 /* Touch interface */
1804                 if (wacom_wac1->features.touch_max ||
1805                     (wacom_wac1->features.type >= INTUOSHT &&
1806                     wacom_wac1->features.type <= BAMBOO_PT)) {
1807                         wacom_wac2->features =
1808                                 *((struct wacom_features *)id->driver_data);
1809                         wacom_wac2->pid = wacom_wac->pid;
1810                         hid_hw_stop(hdev2);
1811                         error = wacom_parse_and_register(wacom2, true);
1812                         if (error)
1813                                 goto fail;
1814                 }
1815
1816                 error = wacom_initialize_battery(wacom);
1817                 if (error)
1818                         goto fail;
1819         }
1820
1821         return;
1822
1823 fail:
1824         wacom_clean_inputs(wacom1);
1825         wacom_clean_inputs(wacom2);
1826         return;
1827 }
1828
1829 static int wacom_probe(struct hid_device *hdev,
1830                 const struct hid_device_id *id)
1831 {
1832         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1833         struct usb_device *dev = interface_to_usbdev(intf);
1834         struct wacom *wacom;
1835         struct wacom_wac *wacom_wac;
1836         struct wacom_features *features;
1837         int error;
1838
1839         if (!id->driver_data)
1840                 return -EINVAL;
1841
1842         hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1843
1844         /* hid-core sets this quirk for the boot interface */
1845         hdev->quirks &= ~HID_QUIRK_NOGET;
1846
1847         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1848         if (!wacom)
1849                 return -ENOMEM;
1850
1851         hid_set_drvdata(hdev, wacom);
1852         wacom->hdev = hdev;
1853
1854         wacom_wac = &wacom->wacom_wac;
1855         wacom_wac->features = *((struct wacom_features *)id->driver_data);
1856         features = &wacom_wac->features;
1857
1858         if (features->check_for_hid_type && features->hid_type != hdev->type) {
1859                 error = -ENODEV;
1860                 goto fail_type;
1861         }
1862
1863         wacom_wac->hid_data.inputmode = -1;
1864         wacom_wac->mode_report = -1;
1865
1866         wacom->usbdev = dev;
1867         wacom->intf = intf;
1868         mutex_init(&wacom->lock);
1869         INIT_WORK(&wacom->work, wacom_wireless_work);
1870
1871         /* ask for the report descriptor to be loaded by HID */
1872         error = hid_parse(hdev);
1873         if (error) {
1874                 hid_err(hdev, "parse failed\n");
1875                 goto fail_parse;
1876         }
1877
1878         error = wacom_parse_and_register(wacom, false);
1879         if (error)
1880                 goto fail_parse;
1881
1882         if (hdev->bus == BUS_BLUETOOTH) {
1883                 error = device_create_file(&hdev->dev, &dev_attr_speed);
1884                 if (error)
1885                         hid_warn(hdev,
1886                                  "can't create sysfs speed attribute err: %d\n",
1887                                  error);
1888         }
1889
1890         return 0;
1891
1892 fail_type:
1893 fail_parse:
1894         kfree(wacom);
1895         hid_set_drvdata(hdev, NULL);
1896         return error;
1897 }
1898
1899 static void wacom_remove(struct hid_device *hdev)
1900 {
1901         struct wacom *wacom = hid_get_drvdata(hdev);
1902         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1903         struct wacom_features *features = &wacom_wac->features;
1904
1905         if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1906                 hid_hw_close(hdev);
1907
1908         hid_hw_stop(hdev);
1909
1910         cancel_work_sync(&wacom->work);
1911         wacom_clean_inputs(wacom);
1912         if (hdev->bus == BUS_BLUETOOTH)
1913                 device_remove_file(&hdev->dev, &dev_attr_speed);
1914         wacom_destroy_battery(wacom);
1915         wacom_remove_shared_data(wacom);
1916
1917         hid_set_drvdata(hdev, NULL);
1918         kfree(wacom);
1919 }
1920
1921 #ifdef CONFIG_PM
1922 static int wacom_resume(struct hid_device *hdev)
1923 {
1924         struct wacom *wacom = hid_get_drvdata(hdev);
1925         struct wacom_features *features = &wacom->wacom_wac.features;
1926
1927         mutex_lock(&wacom->lock);
1928
1929         /* switch to wacom mode first */
1930         wacom_query_tablet_data(hdev, features);
1931         wacom_led_control(wacom);
1932
1933         mutex_unlock(&wacom->lock);
1934
1935         return 0;
1936 }
1937
1938 static int wacom_reset_resume(struct hid_device *hdev)
1939 {
1940         return wacom_resume(hdev);
1941 }
1942 #endif /* CONFIG_PM */
1943
1944 static struct hid_driver wacom_driver = {
1945         .name =         "wacom",
1946         .id_table =     wacom_ids,
1947         .probe =        wacom_probe,
1948         .remove =       wacom_remove,
1949         .report =       wacom_wac_report,
1950 #ifdef CONFIG_PM
1951         .resume =       wacom_resume,
1952         .reset_resume = wacom_reset_resume,
1953 #endif
1954         .raw_event =    wacom_raw_event,
1955 };
1956 module_hid_driver(wacom_driver);
1957
1958 MODULE_VERSION(DRIVER_VERSION);
1959 MODULE_AUTHOR(DRIVER_AUTHOR);
1960 MODULE_DESCRIPTION(DRIVER_DESC);
1961 MODULE_LICENSE(DRIVER_LICENSE);