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
  27 #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
  28 #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
  29
  30 static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
  31                             size_t size, unsigned int retries)
  32 {
  33         int retval;
  34
  35         do {
  36                 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
  37                                 HID_REQ_GET_REPORT);
  38         } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
  39
  40         return retval;
  41 }
  42
  43 static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
  44                             size_t size, unsigned int retries)
  45 {
  46         int retval;
  47
  48         do {
  49                 retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
  50                                 HID_REQ_SET_REPORT);
  51         } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
  52
  53         return retval;
  54 }
  55
  56 static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
  57                 u8 *raw_data, int size)
  58 {
  59         struct wacom *wacom = hid_get_drvdata(hdev);
  60
  61         if (size > WACOM_PKGLEN_MAX)
  62                 return 1;
  63
  64         memcpy(wacom->wacom_wac.data, raw_data, size);
  65
  66         wacom_wac_irq(&wacom->wacom_wac, size);
  67
  68         return 0;
  69 }
  70
  71 static int wacom_open(struct input_dev *dev)
  72 {
  73         struct wacom *wacom = input_get_drvdata(dev);
  74
  75         return hid_hw_open(wacom->hdev);
  76 }
  77
  78 static void wacom_close(struct input_dev *dev)
  79 {
  80         struct wacom *wacom = input_get_drvdata(dev);
  81
  82         hid_hw_close(wacom->hdev);
  83 }
  84
  85 /*
  86  * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
  87  */
  88 static int wacom_calc_hid_res(int logical_extents, int physical_extents,
  89                                unsigned unit, int exponent)
  90 {
  91         struct hid_field field = {
  92                 .logical_maximum = logical_extents,
  93                 .physical_maximum = physical_extents,
  94                 .unit = unit,
  95                 .unit_exponent = exponent,
  96         };
  97
  98         return hidinput_calc_abs_res(&field, ABS_X);
  99 }
 100
 101 static void wacom_feature_mapping(struct hid_device *hdev,
 102                 struct hid_field *field, struct hid_usage *usage)
 103 {
 104         struct wacom *wacom = hid_get_drvdata(hdev);
 105         struct wacom_features *features = &wacom->wacom_wac.features;
 106         struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
 107         u8 *data;
 108         int ret;
 109
 110         switch (usage->hid) {
 111         case HID_DG_CONTACTMAX:
 112                 /* leave touch_max as is if predefined */
 113                 if (!features->touch_max) {
 114                         /* read manually */
 115                         data = kzalloc(2, GFP_KERNEL);
 116                         if (!data)
 117                                 break;
 118                         data[0] = field->report->id;
 119                         ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
 120                                                 data, 2, 0);
 121                         if (ret == 2)
 122                                 features->touch_max = data[1];
 123                         kfree(data);
 124                 }
 125                 break;
 126         case HID_DG_INPUTMODE:
 127                 /* Ignore if value index is out of bounds. */
 128                 if (usage->usage_index >= field->report_count) {
 129                         dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
 130                         break;
 131                 }
 132
 133                 hid_data->inputmode = field->report->id;
 134                 hid_data->inputmode_index = usage->usage_index;
 135                 break;
 136         }
 137 }
 138
 139 /*
 140  * Interface Descriptor of wacom devices can be incomplete and
 141  * inconsistent so wacom_features table is used to store stylus
 142  * device's packet lengths, various maximum values, and tablet
 143  * resolution based on product ID's.
 144  *
 145  * For devices that contain 2 interfaces, wacom_features table is
 146  * inaccurate for the touch interface.  Since the Interface Descriptor
 147  * for touch interfaces has pretty complete data, this function exists
 148  * to query tablet for this missing information instead of hard coding in
 149  * an additional table.
 150  *
 151  * A typical Interface Descriptor for a stylus will contain a
 152  * boot mouse application collection that is not of interest and this
 153  * function will ignore it.
 154  *
 155  * It also contains a digitizer application collection that also is not
 156  * of interest since any information it contains would be duplicate
 157  * of what is in wacom_features. Usually it defines a report of an array
 158  * of bytes that could be used as max length of the stylus packet returned.
 159  * If it happens to define a Digitizer-Stylus Physical Collection then
 160  * the X and Y logical values contain valid data but it is ignored.
 161  *
 162  * A typical Interface Descriptor for a touch interface will contain a
 163  * Digitizer-Finger Physical Collection which will define both logical
 164  * X/Y maximum as well as the physical size of tablet. Since touch
 165  * interfaces haven't supported pressure or distance, this is enough
 166  * information to override invalid values in the wacom_features table.
 167  *
 168  * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
 169  * data. We deal with them after returning from this function.
 170  */
 171 static void wacom_usage_mapping(struct hid_device *hdev,
 172                 struct hid_field *field, struct hid_usage *usage)
 173 {
 174         struct wacom *wacom = hid_get_drvdata(hdev);
 175         struct wacom_features *features = &wacom->wacom_wac.features;
 176         bool finger = WACOM_FINGER_FIELD(field);
 177         bool pen = WACOM_PEN_FIELD(field);
 178
 179         /*
 180         * Requiring Stylus Usage will ignore boot mouse
 181         * X/Y values and some cases of invalid Digitizer X/Y
 182         * values commonly reported.
 183         */
 184         if (!pen && !finger)
 185                 return;
 186
 187         /*
 188          * Bamboo models do not support HID_DG_CONTACTMAX.
 189          * And, Bamboo Pen only descriptor contains touch.
 190          */
 191         if (features->type != BAMBOO_PT) {
 192                 /* ISDv4 touch devices at least supports one touch point */
 193                 if (finger && !features->touch_max)
 194                         features->touch_max = 1;
 195         }
 196
 197         switch (usage->hid) {
 198         case HID_GD_X:
 199                 features->x_max = field->logical_maximum;
 200                 if (finger) {
 201                         features->device_type = BTN_TOOL_FINGER;
 202                         features->x_phy = field->physical_maximum;
 203                         if (features->type != BAMBOO_PT) {
 204                                 features->unit = field->unit;
 205                                 features->unitExpo = field->unit_exponent;
 206                         }
 207                 } else {
 208                         features->device_type = BTN_TOOL_PEN;
 209                 }
 210                 break;
 211         case HID_GD_Y:
 212                 features->y_max = field->logical_maximum;
 213                 if (finger) {
 214                         features->y_phy = field->physical_maximum;
 215                         if (features->type != BAMBOO_PT) {
 216                                 features->unit = field->unit;
 217                                 features->unitExpo = field->unit_exponent;
 218                         }
 219                 }
 220                 break;
 221         case HID_DG_TIPPRESSURE:
 222                 if (pen)
 223                         features->pressure_max = field->logical_maximum;
 224                 break;
 225         }
 226
 227         if (features->type == HID_GENERIC)
 228                 wacom_wac_usage_mapping(hdev, field, usage);
 229 }
 230
 231 static void wacom_post_parse_hid(struct hid_device *hdev,
 232                                  struct wacom_features *features)
 233 {
 234         struct wacom *wacom = hid_get_drvdata(hdev);
 235         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 236
 237         if (features->type == HID_GENERIC) {
 238                 /* Any last-minute generic device setup */
 239                 if (features->touch_max > 1) {
 240                         input_mt_init_slots(wacom_wac->input, wacom_wac->features.touch_max,
 241                                     INPUT_MT_DIRECT);
 242                 }
 243         }
 244 }
 245
 246 static void wacom_parse_hid(struct hid_device *hdev,
 247                            struct wacom_features *features)
 248 {
 249         struct hid_report_enum *rep_enum;
 250         struct hid_report *hreport;
 251         int i, j;
 252
 253         /* check features first */
 254         rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
 255         list_for_each_entry(hreport, &rep_enum->report_list, list) {
 256                 for (i = 0; i < hreport->maxfield; i++) {
 257                         /* Ignore if report count is out of bounds. */
 258                         if (hreport->field[i]->report_count < 1)
 259                                 continue;
 260
 261                         for (j = 0; j < hreport->field[i]->maxusage; j++) {
 262                                 wacom_feature_mapping(hdev, hreport->field[i],
 263                                                 hreport->field[i]->usage + j);
 264                         }
 265                 }
 266         }
 267
 268         /* now check the input usages */
 269         rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
 270         list_for_each_entry(hreport, &rep_enum->report_list, list) {
 271
 272                 if (!hreport->maxfield)
 273                         continue;
 274
 275                 for (i = 0; i < hreport->maxfield; i++)
 276                         for (j = 0; j < hreport->field[i]->maxusage; j++)
 277                                 wacom_usage_mapping(hdev, hreport->field[i],
 278                                                 hreport->field[i]->usage + j);
 279         }
 280
 281         wacom_post_parse_hid(hdev, features);
 282 }
 283
 284 static int wacom_hid_set_device_mode(struct hid_device *hdev)
 285 {
 286         struct wacom *wacom = hid_get_drvdata(hdev);
 287         struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
 288         struct hid_report *r;
 289         struct hid_report_enum *re;
 290
 291         if (hid_data->inputmode < 0)
 292                 return 0;
 293
 294         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 295         r = re->report_id_hash[hid_data->inputmode];
 296         if (r) {
 297                 r->field[0]->value[hid_data->inputmode_index] = 2;
 298                 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 299         }
 300         return 0;
 301 }
 302
 303 static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
 304                 int length, int mode)
 305 {
 306         unsigned char *rep_data;
 307         int error = -ENOMEM, limit = 0;
 308
 309         rep_data = kzalloc(length, GFP_KERNEL);
 310         if (!rep_data)
 311                 return error;
 312
 313         do {
 314                 rep_data[0] = report_id;
 315                 rep_data[1] = mode;
 316
 317                 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
 318                                          length, 1);
 319                 if (error >= 0)
 320                         error = wacom_get_report(hdev, HID_FEATURE_REPORT,
 321                                                  rep_data, length, 1);
 322         } while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
 323
 324         kfree(rep_data);
 325
 326         return error < 0 ? error : 0;
 327 }
 328
 329 static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
 330                 struct wacom_features *features)
 331 {
 332         struct wacom *wacom = hid_get_drvdata(hdev);
 333         int ret;
 334         u8 rep_data[2];
 335
 336         switch (features->type) {
 337         case GRAPHIRE_BT:
 338                 rep_data[0] = 0x03;
 339                 rep_data[1] = 0x00;
 340                 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
 341                                         3);
 342
 343                 if (ret >= 0) {
 344                         rep_data[0] = speed == 0 ? 0x05 : 0x06;
 345                         rep_data[1] = 0x00;
 346
 347                         ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
 348                                                 rep_data, 2, 3);
 349
 350                         if (ret >= 0) {
 351                                 wacom->wacom_wac.bt_high_speed = speed;
 352                                 return 0;
 353                         }
 354                 }
 355
 356                 /*
 357                  * Note that if the raw queries fail, it's not a hard failure
 358                  * and it is safe to continue
 359                  */
 360                 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
 361                          rep_data[0], ret);
 362                 break;
 363         case INTUOS4WL:
 364                 if (speed == 1)
 365                         wacom->wacom_wac.bt_features &= ~0x20;
 366                 else
 367                         wacom->wacom_wac.bt_features |= 0x20;
 368
 369                 rep_data[0] = 0x03;
 370                 rep_data[1] = wacom->wacom_wac.bt_features;
 371
 372                 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
 373                                         1);
 374                 if (ret >= 0)
 375                         wacom->wacom_wac.bt_high_speed = speed;
 376                 break;
 377         }
 378
 379         return 0;
 380 }
 381
 382 /*
 383  * Switch the tablet into its most-capable mode. Wacom tablets are
 384  * typically configured to power-up in a mode which sends mouse-like
 385  * reports to the OS. To get absolute position, pressure data, etc.
 386  * from the tablet, it is necessary to switch the tablet out of this
 387  * mode and into one which sends the full range of tablet data.
 388  */
 389 static int wacom_query_tablet_data(struct hid_device *hdev,
 390                 struct wacom_features *features)
 391 {
 392         if (hdev->bus == BUS_BLUETOOTH)
 393                 return wacom_bt_query_tablet_data(hdev, 1, features);
 394
 395         if (features->type == HID_GENERIC)
 396                 return wacom_hid_set_device_mode(hdev);
 397
 398         if (features->device_type == BTN_TOOL_FINGER) {
 399                 if (features->type > TABLETPC) {
 400                         /* MT Tablet PC touch */
 401                         return wacom_set_device_mode(hdev, 3, 4, 4);
 402                 }
 403                 else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
 404                         return wacom_set_device_mode(hdev, 18, 3, 2);
 405                 }
 406                 else if (features->type == WACOM_27QHDT) {
 407                         return wacom_set_device_mode(hdev, 131, 3, 2);
 408                 }
 409         } else if (features->device_type == BTN_TOOL_PEN) {
 410                 if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
 411                         return wacom_set_device_mode(hdev, 2, 2, 2);
 412                 }
 413         }
 414
 415         return 0;
 416 }
 417
 418 static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
 419                                          struct wacom_features *features)
 420 {
 421         struct wacom *wacom = hid_get_drvdata(hdev);
 422         struct usb_interface *intf = wacom->intf;
 423
 424         /* default features */
 425         features->device_type = BTN_TOOL_PEN;
 426         features->x_fuzz = 4;
 427         features->y_fuzz = 4;
 428         features->pressure_fuzz = 0;
 429         features->distance_fuzz = 0;
 430
 431         /*
 432          * The wireless device HID is basic and layout conflicts with
 433          * other tablets (monitor and touch interface can look like pen).
 434          * Skip the query for this type and modify defaults based on
 435          * interface number.
 436          */
 437         if (features->type == WIRELESS) {
 438                 if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
 439                         features->device_type = 0;
 440                 } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
 441                         features->device_type = BTN_TOOL_FINGER;
 442                         features->pktlen = WACOM_PKGLEN_BBTOUCH3;
 443                 }
 444         }
 445
 446         /* only devices that support touch need to retrieve the info */
 447         if (features->type < BAMBOO_PT)
 448                 return;
 449
 450         wacom_parse_hid(hdev, features);
 451 }
 452
 453 struct wacom_hdev_data {
 454         struct list_head list;
 455         struct kref kref;
 456         struct hid_device *dev;
 457         struct wacom_shared shared;
 458 };
 459
 460 static LIST_HEAD(wacom_udev_list);
 461 static DEFINE_MUTEX(wacom_udev_list_lock);
 462
 463 static bool wacom_are_sibling(struct hid_device *hdev,
 464                 struct hid_device *sibling)
 465 {
 466         struct wacom *wacom = hid_get_drvdata(hdev);
 467         struct wacom_features *features = &wacom->wacom_wac.features;
 468         int vid = features->oVid;
 469         int pid = features->oPid;
 470         int n1,n2;
 471
 472         if (vid == 0 && pid == 0) {
 473                 vid = hdev->vendor;
 474                 pid = hdev->product;
 475         }
 476
 477         if (vid != sibling->vendor || pid != sibling->product)
 478                 return false;
 479
 480         /* Compare the physical path. */
 481         n1 = strrchr(hdev->phys, '.') - hdev->phys;
 482         n2 = strrchr(sibling->phys, '.') - sibling->phys;
 483         if (n1 != n2 || n1 <= 0 || n2 <= 0)
 484                 return false;
 485
 486         return !strncmp(hdev->phys, sibling->phys, n1);
 487 }
 488
 489 static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
 490 {
 491         struct wacom_hdev_data *data;
 492
 493         list_for_each_entry(data, &wacom_udev_list, list) {
 494                 if (wacom_are_sibling(hdev, data->dev)) {
 495                         kref_get(&data->kref);
 496                         return data;
 497                 }
 498         }
 499
 500         return NULL;
 501 }
 502
 503 static int wacom_add_shared_data(struct hid_device *hdev)
 504 {
 505         struct wacom *wacom = hid_get_drvdata(hdev);
 506         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 507         struct wacom_hdev_data *data;
 508         int retval = 0;
 509
 510         mutex_lock(&wacom_udev_list_lock);
 511
 512         data = wacom_get_hdev_data(hdev);
 513         if (!data) {
 514                 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
 515                 if (!data) {
 516                         retval = -ENOMEM;
 517                         goto out;
 518                 }
 519
 520                 kref_init(&data->kref);
 521                 data->dev = hdev;
 522                 list_add_tail(&data->list, &wacom_udev_list);
 523         }
 524
 525         wacom_wac->shared = &data->shared;
 526
 527 out:
 528         mutex_unlock(&wacom_udev_list_lock);
 529         return retval;
 530 }
 531
 532 static void wacom_release_shared_data(struct kref *kref)
 533 {
 534         struct wacom_hdev_data *data =
 535                 container_of(kref, struct wacom_hdev_data, kref);
 536
 537         mutex_lock(&wacom_udev_list_lock);
 538         list_del(&data->list);
 539         mutex_unlock(&wacom_udev_list_lock);
 540
 541         kfree(data);
 542 }
 543
 544 static void wacom_remove_shared_data(struct wacom_wac *wacom)
 545 {
 546         struct wacom_hdev_data *data;
 547
 548         if (wacom->shared) {
 549                 data = container_of(wacom->shared, struct wacom_hdev_data, shared);
 550                 kref_put(&data->kref, wacom_release_shared_data);
 551                 wacom->shared = NULL;
 552         }
 553 }
 554
 555 static int wacom_led_control(struct wacom *wacom)
 556 {
 557         unsigned char *buf;
 558         int retval;
 559         unsigned char report_id = WAC_CMD_LED_CONTROL;
 560         int buf_size = 9;
 561
 562         if (wacom->wacom_wac.pid) { /* wireless connected */
 563                 report_id = WAC_CMD_WL_LED_CONTROL;
 564                 buf_size = 13;
 565         }
 566         buf = kzalloc(buf_size, GFP_KERNEL);
 567         if (!buf)
 568                 return -ENOMEM;
 569
 570         if (wacom->wacom_wac.features.type >= INTUOS5S &&
 571             wacom->wacom_wac.features.type <= INTUOSPL) {
 572                 /*
 573                  * Touch Ring and crop mark LED luminance may take on
 574                  * one of four values:
 575                  *    0 = Low; 1 = Medium; 2 = High; 3 = Off
 576                  */
 577                 int ring_led = wacom->led.select[0] & 0x03;
 578                 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
 579                 int crop_lum = 0;
 580                 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
 581
 582                 buf[0] = report_id;
 583                 if (wacom->wacom_wac.pid) {
 584                         wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
 585                                          buf, buf_size, WAC_CMD_RETRIES);
 586                         buf[0] = report_id;
 587                         buf[4] = led_bits;
 588                 } else
 589                         buf[1] = led_bits;
 590         }
 591         else {
 592                 int led = wacom->led.select[0] | 0x4;
 593
 594                 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
 595                     wacom->wacom_wac.features.type == WACOM_24HD)
 596                         led |= (wacom->led.select[1] << 4) | 0x40;
 597
 598                 buf[0] = report_id;
 599                 buf[1] = led;
 600                 buf[2] = wacom->led.llv;
 601                 buf[3] = wacom->led.hlv;
 602                 buf[4] = wacom->led.img_lum;
 603         }
 604
 605         retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
 606                                   WAC_CMD_RETRIES);
 607         kfree(buf);
 608
 609         return retval;
 610 }
 611
 612 static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
 613                 const unsigned len, const void *img)
 614 {
 615         unsigned char *buf;
 616         int i, retval;
 617         const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
 618
 619         buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
 620         if (!buf)
 621                 return -ENOMEM;
 622
 623         /* Send 'start' command */
 624         buf[0] = WAC_CMD_ICON_START;
 625         buf[1] = 1;
 626         retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
 627                                   WAC_CMD_RETRIES);
 628         if (retval < 0)
 629                 goto out;
 630
 631         buf[0] = xfer_id;
 632         buf[1] = button_id & 0x07;
 633         for (i = 0; i < 4; i++) {
 634                 buf[2] = i;
 635                 memcpy(buf + 3, img + i * chunk_len, chunk_len);
 636
 637                 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
 638                                           buf, chunk_len + 3, WAC_CMD_RETRIES);
 639                 if (retval < 0)
 640                         break;
 641         }
 642
 643         /* Send 'stop' */
 644         buf[0] = WAC_CMD_ICON_START;
 645         buf[1] = 0;
 646         wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
 647                          WAC_CMD_RETRIES);
 648
 649 out:
 650         kfree(buf);
 651         return retval;
 652 }
 653
 654 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
 655                                       const char *buf, size_t count)
 656 {
 657         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 658         struct wacom *wacom = hid_get_drvdata(hdev);
 659         unsigned int id;
 660         int err;
 661
 662         err = kstrtouint(buf, 10, &id);
 663         if (err)
 664                 return err;
 665
 666         mutex_lock(&wacom->lock);
 667
 668         wacom->led.select[set_id] = id & 0x3;
 669         err = wacom_led_control(wacom);
 670
 671         mutex_unlock(&wacom->lock);
 672
 673         return err < 0 ? err : count;
 674 }
 675
 676 #define DEVICE_LED_SELECT_ATTR(SET_ID)                                  \
 677 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev,     \
 678         struct device_attribute *attr, const char *buf, size_t count)   \
 679 {                                                                       \
 680         return wacom_led_select_store(dev, SET_ID, buf, count);         \
 681 }                                                                       \
 682 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,      \
 683         struct device_attribute *attr, char *buf)                       \
 684 {                                                                       \
 685         struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
 686         struct wacom *wacom = hid_get_drvdata(hdev);                    \
 687         return scnprintf(buf, PAGE_SIZE, "%d\n",                        \
 688                          wacom->led.select[SET_ID]);                    \
 689 }                                                                       \
 690 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,       \
 691                     wacom_led##SET_ID##_select_show,                    \
 692                     wacom_led##SET_ID##_select_store)
 693
 694 DEVICE_LED_SELECT_ATTR(0);
 695 DEVICE_LED_SELECT_ATTR(1);
 696
 697 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
 698                                      const char *buf, size_t count)
 699 {
 700         unsigned int value;
 701         int err;
 702
 703         err = kstrtouint(buf, 10, &value);
 704         if (err)
 705                 return err;
 706
 707         mutex_lock(&wacom->lock);
 708
 709         *dest = value & 0x7f;
 710         err = wacom_led_control(wacom);
 711
 712         mutex_unlock(&wacom->lock);
 713
 714         return err < 0 ? err : count;
 715 }
 716
 717 #define DEVICE_LUMINANCE_ATTR(name, field)                              \
 718 static ssize_t wacom_##name##_luminance_store(struct device *dev,       \
 719         struct device_attribute *attr, const char *buf, size_t count)   \
 720 {                                                                       \
 721         struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
 722         struct wacom *wacom = hid_get_drvdata(hdev);                    \
 723                                                                         \
 724         return wacom_luminance_store(wacom, &wacom->led.field,          \
 725                                      buf, count);                       \
 726 }                                                                       \
 727 static ssize_t wacom_##name##_luminance_show(struct device *dev,        \
 728         struct device_attribute *attr, char *buf)                       \
 729 {                                                                       \
 730         struct wacom *wacom = dev_get_drvdata(dev);                     \
 731         return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field);     \
 732 }                                                                       \
 733 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,                  \
 734                    wacom_##name##_luminance_show,                       \
 735                    wacom_##name##_luminance_store)
 736
 737 DEVICE_LUMINANCE_ATTR(status0, llv);
 738 DEVICE_LUMINANCE_ATTR(status1, hlv);
 739 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
 740
 741 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
 742                                         const char *buf, size_t count)
 743 {
 744         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 745         struct wacom *wacom = hid_get_drvdata(hdev);
 746         int err;
 747         unsigned len;
 748         u8 xfer_id;
 749
 750         if (hdev->bus == BUS_BLUETOOTH) {
 751                 len = 256;
 752                 xfer_id = WAC_CMD_ICON_BT_XFER;
 753         } else {
 754                 len = 1024;
 755                 xfer_id = WAC_CMD_ICON_XFER;
 756         }
 757
 758         if (count != len)
 759                 return -EINVAL;
 760
 761         mutex_lock(&wacom->lock);
 762
 763         err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
 764
 765         mutex_unlock(&wacom->lock);
 766
 767         return err < 0 ? err : count;
 768 }
 769
 770 #define DEVICE_BTNIMG_ATTR(BUTTON_ID)                                   \
 771 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev,      \
 772         struct device_attribute *attr, const char *buf, size_t count)   \
 773 {                                                                       \
 774         return wacom_button_image_store(dev, BUTTON_ID, buf, count);    \
 775 }                                                                       \
 776 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,        \
 777                    NULL, wacom_btnimg##BUTTON_ID##_store)
 778
 779 DEVICE_BTNIMG_ATTR(0);
 780 DEVICE_BTNIMG_ATTR(1);
 781 DEVICE_BTNIMG_ATTR(2);
 782 DEVICE_BTNIMG_ATTR(3);
 783 DEVICE_BTNIMG_ATTR(4);
 784 DEVICE_BTNIMG_ATTR(5);
 785 DEVICE_BTNIMG_ATTR(6);
 786 DEVICE_BTNIMG_ATTR(7);
 787
 788 static struct attribute *cintiq_led_attrs[] = {
 789         &dev_attr_status_led0_select.attr,
 790         &dev_attr_status_led1_select.attr,
 791         NULL
 792 };
 793
 794 static struct attribute_group cintiq_led_attr_group = {
 795         .name = "wacom_led",
 796         .attrs = cintiq_led_attrs,
 797 };
 798
 799 static struct attribute *intuos4_led_attrs[] = {
 800         &dev_attr_status0_luminance.attr,
 801         &dev_attr_status1_luminance.attr,
 802         &dev_attr_status_led0_select.attr,
 803         &dev_attr_buttons_luminance.attr,
 804         &dev_attr_button0_rawimg.attr,
 805         &dev_attr_button1_rawimg.attr,
 806         &dev_attr_button2_rawimg.attr,
 807         &dev_attr_button3_rawimg.attr,
 808         &dev_attr_button4_rawimg.attr,
 809         &dev_attr_button5_rawimg.attr,
 810         &dev_attr_button6_rawimg.attr,
 811         &dev_attr_button7_rawimg.attr,
 812         NULL
 813 };
 814
 815 static struct attribute_group intuos4_led_attr_group = {
 816         .name = "wacom_led",
 817         .attrs = intuos4_led_attrs,
 818 };
 819
 820 static struct attribute *intuos5_led_attrs[] = {
 821         &dev_attr_status0_luminance.attr,
 822         &dev_attr_status_led0_select.attr,
 823         NULL
 824 };
 825
 826 static struct attribute_group intuos5_led_attr_group = {
 827         .name = "wacom_led",
 828         .attrs = intuos5_led_attrs,
 829 };
 830
 831 static int wacom_initialize_leds(struct wacom *wacom)
 832 {
 833         int error;
 834
 835         /* Initialize default values */
 836         switch (wacom->wacom_wac.features.type) {
 837         case INTUOS4S:
 838         case INTUOS4:
 839         case INTUOS4WL:
 840         case INTUOS4L:
 841                 wacom->led.select[0] = 0;
 842                 wacom->led.select[1] = 0;
 843                 wacom->led.llv = 10;
 844                 wacom->led.hlv = 20;
 845                 wacom->led.img_lum = 10;
 846                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 847                                            &intuos4_led_attr_group);
 848                 break;
 849
 850         case WACOM_24HD:
 851         case WACOM_21UX2:
 852                 wacom->led.select[0] = 0;
 853                 wacom->led.select[1] = 0;
 854                 wacom->led.llv = 0;
 855                 wacom->led.hlv = 0;
 856                 wacom->led.img_lum = 0;
 857
 858                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 859                                            &cintiq_led_attr_group);
 860                 break;
 861
 862         case INTUOS5S:
 863         case INTUOS5:
 864         case INTUOS5L:
 865         case INTUOSPS:
 866         case INTUOSPM:
 867         case INTUOSPL:
 868                 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN) {
 869                         wacom->led.select[0] = 0;
 870                         wacom->led.select[1] = 0;
 871                         wacom->led.llv = 32;
 872                         wacom->led.hlv = 0;
 873                         wacom->led.img_lum = 0;
 874
 875                         error = sysfs_create_group(&wacom->hdev->dev.kobj,
 876                                                   &intuos5_led_attr_group);
 877                 } else
 878                         return 0;
 879                 break;
 880
 881         default:
 882                 return 0;
 883         }
 884
 885         if (error) {
 886                 hid_err(wacom->hdev,
 887                         "cannot create sysfs group err: %d\n", error);
 888                 return error;
 889         }
 890         wacom_led_control(wacom);
 891         wacom->led_initialized = true;
 892
 893         return 0;
 894 }
 895
 896 static void wacom_destroy_leds(struct wacom *wacom)
 897 {
 898         if (!wacom->led_initialized)
 899                 return;
 900
 901         wacom->led_initialized = false;
 902
 903         switch (wacom->wacom_wac.features.type) {
 904         case INTUOS4S:
 905         case INTUOS4:
 906         case INTUOS4WL:
 907         case INTUOS4L:
 908                 sysfs_remove_group(&wacom->hdev->dev.kobj,
 909                                    &intuos4_led_attr_group);
 910                 break;
 911
 912         case WACOM_24HD:
 913         case WACOM_21UX2:
 914                 sysfs_remove_group(&wacom->hdev->dev.kobj,
 915                                    &cintiq_led_attr_group);
 916                 break;
 917
 918         case INTUOS5S:
 919         case INTUOS5:
 920         case INTUOS5L:
 921         case INTUOSPS:
 922         case INTUOSPM:
 923         case INTUOSPL:
 924                 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN)
 925                         sysfs_remove_group(&wacom->hdev->dev.kobj,
 926                                            &intuos5_led_attr_group);
 927                 break;
 928         }
 929 }
 930
 931 static enum power_supply_property wacom_battery_props[] = {
 932         POWER_SUPPLY_PROP_STATUS,
 933         POWER_SUPPLY_PROP_SCOPE,
 934         POWER_SUPPLY_PROP_CAPACITY
 935 };
 936
 937 static enum power_supply_property wacom_ac_props[] = {
 938         POWER_SUPPLY_PROP_PRESENT,
 939         POWER_SUPPLY_PROP_ONLINE,
 940         POWER_SUPPLY_PROP_SCOPE,
 941 };
 942
 943 static int wacom_battery_get_property(struct power_supply *psy,
 944                                       enum power_supply_property psp,
 945                                       union power_supply_propval *val)
 946 {
 947         struct wacom *wacom = container_of(psy, struct wacom, battery);
 948         int ret = 0;
 949
 950         switch (psp) {
 951                 case POWER_SUPPLY_PROP_SCOPE:
 952                         val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 953                         break;
 954                 case POWER_SUPPLY_PROP_CAPACITY:
 955                         val->intval =
 956                                 wacom->wacom_wac.battery_capacity;
 957                         break;
 958                 case POWER_SUPPLY_PROP_STATUS:
 959                         if (wacom->wacom_wac.bat_charging)
 960                                 val->intval = POWER_SUPPLY_STATUS_CHARGING;
 961                         else if (wacom->wacom_wac.battery_capacity == 100 &&
 962                                     wacom->wacom_wac.ps_connected)
 963                                 val->intval = POWER_SUPPLY_STATUS_FULL;
 964                         else
 965                                 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
 966                         break;
 967                 default:
 968                         ret = -EINVAL;
 969                         break;
 970         }
 971
 972         return ret;
 973 }
 974
 975 static int wacom_ac_get_property(struct power_supply *psy,
 976                                 enum power_supply_property psp,
 977                                 union power_supply_propval *val)
 978 {
 979         struct wacom *wacom = container_of(psy, struct wacom, ac);
 980         int ret = 0;
 981
 982         switch (psp) {
 983         case POWER_SUPPLY_PROP_PRESENT:
 984                 /* fall through */
 985         case POWER_SUPPLY_PROP_ONLINE:
 986                 val->intval = wacom->wacom_wac.ps_connected;
 987                 break;
 988         case POWER_SUPPLY_PROP_SCOPE:
 989                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 990                 break;
 991         default:
 992                 ret = -EINVAL;
 993                 break;
 994         }
 995         return ret;
 996 }
 997
 998 static int wacom_initialize_battery(struct wacom *wacom)
 999 {
1000         static atomic_t battery_no = ATOMIC_INIT(0);
1001         int error;
1002         unsigned long n;
1003
1004         if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
1005                 n = atomic_inc_return(&battery_no) - 1;
1006
1007                 wacom->battery.properties = wacom_battery_props;
1008                 wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
1009                 wacom->battery.get_property = wacom_battery_get_property;
1010                 sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
1011                 wacom->battery.name = wacom->wacom_wac.bat_name;
1012                 wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
1013                 wacom->battery.use_for_apm = 0;
1014
1015                 wacom->ac.properties = wacom_ac_props;
1016                 wacom->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
1017                 wacom->ac.get_property = wacom_ac_get_property;
1018                 sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
1019                 wacom->ac.name = wacom->wacom_wac.ac_name;
1020                 wacom->ac.type = POWER_SUPPLY_TYPE_MAINS;
1021                 wacom->ac.use_for_apm = 0;
1022
1023                 error = power_supply_register(&wacom->hdev->dev,
1024                                               &wacom->battery);
1025                 if (error)
1026                         return error;
1027
1028                 power_supply_powers(&wacom->battery, &wacom->hdev->dev);
1029
1030                 error = power_supply_register(&wacom->hdev->dev, &wacom->ac);
1031                 if (error) {
1032                         power_supply_unregister(&wacom->battery);
1033                         return error;
1034                 }
1035
1036                 power_supply_powers(&wacom->ac, &wacom->hdev->dev);
1037         }
1038
1039         return 0;
1040 }
1041
1042 static void wacom_destroy_battery(struct wacom *wacom)
1043 {
1044         if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1045              wacom->battery.dev) {
1046                 power_supply_unregister(&wacom->battery);
1047                 wacom->battery.dev = NULL;
1048                 power_supply_unregister(&wacom->ac);
1049                 wacom->ac.dev = NULL;
1050         }
1051 }
1052
1053 static ssize_t wacom_show_speed(struct device *dev,
1054                                 struct device_attribute
1055                                 *attr, char *buf)
1056 {
1057         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1058         struct wacom *wacom = hid_get_drvdata(hdev);
1059
1060         return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
1061 }
1062
1063 static ssize_t wacom_store_speed(struct device *dev,
1064                                 struct device_attribute *attr,
1065                                 const char *buf, size_t count)
1066 {
1067         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1068         struct wacom *wacom = hid_get_drvdata(hdev);
1069         u8 new_speed;
1070
1071         if (kstrtou8(buf, 0, &new_speed))
1072                 return -EINVAL;
1073
1074         if (new_speed != 0 && new_speed != 1)
1075                 return -EINVAL;
1076
1077         wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1078
1079         return count;
1080 }
1081
1082 static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1083                 wacom_show_speed, wacom_store_speed);
1084
1085 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1086 {
1087         struct input_dev *input_dev;
1088         struct hid_device *hdev = wacom->hdev;
1089         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1090
1091         input_dev = input_allocate_device();
1092         if (!input_dev)
1093                 return NULL;
1094
1095         input_dev->name = wacom_wac->name;
1096         input_dev->phys = hdev->phys;
1097         input_dev->dev.parent = &hdev->dev;
1098         input_dev->open = wacom_open;
1099         input_dev->close = wacom_close;
1100         input_dev->uniq = hdev->uniq;
1101         input_dev->id.bustype = hdev->bus;
1102         input_dev->id.vendor  = hdev->vendor;
1103         input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1104         input_dev->id.version = hdev->version;
1105         input_set_drvdata(input_dev, wacom);
1106
1107         return input_dev;
1108 }
1109
1110 static void wacom_free_inputs(struct wacom *wacom)
1111 {
1112         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1113
1114         if (wacom_wac->input)
1115                 input_free_device(wacom_wac->input);
1116         if (wacom_wac->pad_input)
1117                 input_free_device(wacom_wac->pad_input);
1118         wacom_wac->input = NULL;
1119         wacom_wac->pad_input = NULL;
1120 }
1121
1122 static int wacom_allocate_inputs(struct wacom *wacom)
1123 {
1124         struct input_dev *input_dev, *pad_input_dev;
1125         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1126
1127         input_dev = wacom_allocate_input(wacom);
1128         pad_input_dev = wacom_allocate_input(wacom);
1129         if (!input_dev || !pad_input_dev) {
1130                 wacom_free_inputs(wacom);
1131                 return -ENOMEM;
1132         }
1133
1134         wacom_wac->input = input_dev;
1135         wacom_wac->pad_input = pad_input_dev;
1136         wacom_wac->pad_input->name = wacom_wac->pad_name;
1137
1138         return 0;
1139 }
1140
1141 static void wacom_clean_inputs(struct wacom *wacom)
1142 {
1143         if (wacom->wacom_wac.input) {
1144                 if (wacom->wacom_wac.input_registered)
1145                         input_unregister_device(wacom->wacom_wac.input);
1146                 else
1147                         input_free_device(wacom->wacom_wac.input);
1148         }
1149         if (wacom->wacom_wac.pad_input) {
1150                 if (wacom->wacom_wac.pad_registered)
1151                         input_unregister_device(wacom->wacom_wac.pad_input);
1152                 else
1153                         input_free_device(wacom->wacom_wac.pad_input);
1154         }
1155         wacom->wacom_wac.input = NULL;
1156         wacom->wacom_wac.pad_input = NULL;
1157         wacom_destroy_leds(wacom);
1158 }
1159
1160 static int wacom_register_inputs(struct wacom *wacom)
1161 {
1162         struct input_dev *input_dev, *pad_input_dev;
1163         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1164         int error;
1165
1166         input_dev = wacom_wac->input;
1167         pad_input_dev = wacom_wac->pad_input;
1168
1169         if (!input_dev || !pad_input_dev)
1170                 return -EINVAL;
1171
1172         error = wacom_setup_pentouch_input_capabilities(input_dev, wacom_wac);
1173         if (!error) {
1174                 error = input_register_device(input_dev);
1175                 if (error)
1176                         return error;
1177                 wacom_wac->input_registered = true;
1178         }
1179
1180         error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1181         if (error) {
1182                 /* no pad in use on this interface */
1183                 input_free_device(pad_input_dev);
1184                 wacom_wac->pad_input = NULL;
1185                 pad_input_dev = NULL;
1186         } else {
1187                 error = input_register_device(pad_input_dev);
1188                 if (error)
1189                         goto fail_register_pad_input;
1190                 wacom_wac->pad_registered = true;
1191
1192                 error = wacom_initialize_leds(wacom);
1193                 if (error)
1194                         goto fail_leds;
1195         }
1196
1197         return 0;
1198
1199 fail_leds:
1200         input_unregister_device(pad_input_dev);
1201         pad_input_dev = NULL;
1202         wacom_wac->pad_registered = false;
1203 fail_register_pad_input:
1204         input_unregister_device(input_dev);
1205         wacom_wac->input = NULL;
1206         wacom_wac->input_registered = false;
1207         return error;
1208 }
1209
1210 static void wacom_wireless_work(struct work_struct *work)
1211 {
1212         struct wacom *wacom = container_of(work, struct wacom, work);
1213         struct usb_device *usbdev = wacom->usbdev;
1214         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1215         struct hid_device *hdev1, *hdev2;
1216         struct wacom *wacom1, *wacom2;
1217         struct wacom_wac *wacom_wac1, *wacom_wac2;
1218         int error;
1219
1220         /*
1221          * Regardless if this is a disconnect or a new tablet,
1222          * remove any existing input and battery devices.
1223          */
1224
1225         wacom_destroy_battery(wacom);
1226
1227         /* Stylus interface */
1228         hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
1229         wacom1 = hid_get_drvdata(hdev1);
1230         wacom_wac1 = &(wacom1->wacom_wac);
1231         wacom_clean_inputs(wacom1);
1232
1233         /* Touch interface */
1234         hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
1235         wacom2 = hid_get_drvdata(hdev2);
1236         wacom_wac2 = &(wacom2->wacom_wac);
1237         wacom_clean_inputs(wacom2);
1238
1239         if (wacom_wac->pid == 0) {
1240                 hid_info(wacom->hdev, "wireless tablet disconnected\n");
1241                 wacom_wac1->shared->type = 0;
1242         } else {
1243                 const struct hid_device_id *id = wacom_ids;
1244
1245                 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1246                          wacom_wac->pid);
1247
1248                 while (id->bus) {
1249                         if (id->vendor == USB_VENDOR_ID_WACOM &&
1250                             id->product == wacom_wac->pid)
1251                                 break;
1252                         id++;
1253                 }
1254
1255                 if (!id->bus) {
1256                         hid_info(wacom->hdev, "ignoring unknown PID.\n");
1257                         return;
1258                 }
1259
1260                 /* Stylus interface */
1261                 wacom_wac1->features =
1262                         *((struct wacom_features *)id->driver_data);
1263                 wacom_wac1->features.device_type = BTN_TOOL_PEN;
1264                 snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
1265                          wacom_wac1->features.name);
1266                 snprintf(wacom_wac1->pad_name, WACOM_NAME_MAX, "%s (WL) Pad",
1267                          wacom_wac1->features.name);
1268                 wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
1269                 wacom_wac1->shared->type = wacom_wac1->features.type;
1270                 wacom_wac1->pid = wacom_wac->pid;
1271                 error = wacom_allocate_inputs(wacom1) ||
1272                         wacom_register_inputs(wacom1);
1273                 if (error)
1274                         goto fail;
1275
1276                 /* Touch interface */
1277                 if (wacom_wac1->features.touch_max ||
1278                     wacom_wac1->features.type == INTUOSHT) {
1279                         wacom_wac2->features =
1280                                 *((struct wacom_features *)id->driver_data);
1281                         wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
1282                         wacom_wac2->features.device_type = BTN_TOOL_FINGER;
1283                         wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
1284                         if (wacom_wac2->features.touch_max)
1285                                 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1286                                          "%s (WL) Finger",wacom_wac2->features.name);
1287                         else
1288                                 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1289                                          "%s (WL) Pad",wacom_wac2->features.name);
1290                         snprintf(wacom_wac2->pad_name, WACOM_NAME_MAX,
1291                                  "%s (WL) Pad", wacom_wac2->features.name);
1292                         wacom_wac2->pid = wacom_wac->pid;
1293                         error = wacom_allocate_inputs(wacom2) ||
1294                                 wacom_register_inputs(wacom2);
1295                         if (error)
1296                                 goto fail;
1297
1298                         if (wacom_wac1->features.type == INTUOSHT &&
1299                             wacom_wac1->features.touch_max)
1300                                 wacom_wac->shared->touch_input = wacom_wac2->input;
1301                 }
1302
1303                 error = wacom_initialize_battery(wacom);
1304                 if (error)
1305                         goto fail;
1306         }
1307
1308         return;
1309
1310 fail:
1311         wacom_clean_inputs(wacom1);
1312         wacom_clean_inputs(wacom2);
1313         return;
1314 }
1315
1316 /*
1317  * Not all devices report physical dimensions from HID.
1318  * Compute the default from hardcoded logical dimension
1319  * and resolution before driver overwrites them.
1320  */
1321 static void wacom_set_default_phy(struct wacom_features *features)
1322 {
1323         if (features->x_resolution) {
1324                 features->x_phy = (features->x_max * 100) /
1325                                         features->x_resolution;
1326                 features->y_phy = (features->y_max * 100) /
1327                                         features->y_resolution;
1328         }
1329 }
1330
1331 static void wacom_calculate_res(struct wacom_features *features)
1332 {
1333         features->x_resolution = wacom_calc_hid_res(features->x_max,
1334                                                     features->x_phy,
1335                                                     features->unit,
1336                                                     features->unitExpo);
1337         features->y_resolution = wacom_calc_hid_res(features->y_max,
1338                                                     features->y_phy,
1339                                                     features->unit,
1340                                                     features->unitExpo);
1341 }
1342
1343 static size_t wacom_compute_pktlen(struct hid_device *hdev)
1344 {
1345         struct hid_report_enum *report_enum;
1346         struct hid_report *report;
1347         size_t size = 0;
1348
1349         report_enum = hdev->report_enum + HID_INPUT_REPORT;
1350
1351         list_for_each_entry(report, &report_enum->report_list, list) {
1352                 size_t report_size = hid_report_len(report);
1353                 if (report_size > size)
1354                         size = report_size;
1355         }
1356
1357         return size;
1358 }
1359
1360 static int wacom_probe(struct hid_device *hdev,
1361                 const struct hid_device_id *id)
1362 {
1363         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1364         struct usb_device *dev = interface_to_usbdev(intf);
1365         struct wacom *wacom;
1366         struct wacom_wac *wacom_wac;
1367         struct wacom_features *features;
1368         int error;
1369         unsigned int connect_mask = HID_CONNECT_HIDRAW;
1370
1371         if (!id->driver_data)
1372                 return -EINVAL;
1373
1374         hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1375
1376         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1377         if (!wacom)
1378                 return -ENOMEM;
1379
1380         hid_set_drvdata(hdev, wacom);
1381         wacom->hdev = hdev;
1382
1383         /* ask for the report descriptor to be loaded by HID */
1384         error = hid_parse(hdev);
1385         if (error) {
1386                 hid_err(hdev, "parse failed\n");
1387                 goto fail_parse;
1388         }
1389
1390         wacom_wac = &wacom->wacom_wac;
1391         wacom_wac->features = *((struct wacom_features *)id->driver_data);
1392         features = &wacom_wac->features;
1393         features->pktlen = wacom_compute_pktlen(hdev);
1394         if (features->pktlen > WACOM_PKGLEN_MAX) {
1395                 error = -EINVAL;
1396                 goto fail_pktlen;
1397         }
1398
1399         if (features->check_for_hid_type && features->hid_type != hdev->type) {
1400                 error = -ENODEV;
1401                 goto fail_type;
1402         }
1403
1404         wacom->usbdev = dev;
1405         wacom->intf = intf;
1406         mutex_init(&wacom->lock);
1407         INIT_WORK(&wacom->work, wacom_wireless_work);
1408
1409         if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1410                 error = wacom_allocate_inputs(wacom);
1411                 if (error)
1412                         goto fail_allocate_inputs;
1413         }
1414
1415         /* set the default size in case we do not get them from hid */
1416         wacom_set_default_phy(features);
1417
1418         /* Retrieve the physical and logical size for touch devices */
1419         wacom_retrieve_hid_descriptor(hdev, features);
1420
1421         /*
1422          * Intuos5 has no useful data about its touch interface in its
1423          * HID descriptor. If this is the touch interface (PacketSize
1424          * of WACOM_PKGLEN_BBTOUCH3), override the table values.
1425          */
1426         if (features->type >= INTUOS5S && features->type <= INTUOSHT) {
1427                 if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
1428                         features->device_type = BTN_TOOL_FINGER;
1429
1430                         features->x_max = 4096;
1431                         features->y_max = 4096;
1432                 } else {
1433                         features->device_type = BTN_TOOL_PEN;
1434                 }
1435         }
1436
1437         /*
1438          * Same thing for Bamboo 3rd gen.
1439          */
1440         if ((features->type == BAMBOO_PT) &&
1441             (features->pktlen == WACOM_PKGLEN_BBTOUCH3) &&
1442             (features->device_type == BTN_TOOL_PEN)) {
1443                 features->device_type = BTN_TOOL_FINGER;
1444
1445                 features->x_max = 4096;
1446                 features->y_max = 4096;
1447         }
1448
1449         if (hdev->bus == BUS_BLUETOOTH)
1450                 features->quirks |= WACOM_QUIRK_BATTERY;
1451
1452         wacom_setup_device_quirks(features);
1453
1454         /* set unit to "100th of a mm" for devices not reported by HID */
1455         if (!features->unit) {
1456                 features->unit = 0x11;
1457                 features->unitExpo = -3;
1458         }
1459         wacom_calculate_res(features);
1460
1461         strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
1462         snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1463                 "%s Pad", features->name);
1464
1465         if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
1466                 /* Append the device type to the name */
1467                 if (features->device_type != BTN_TOOL_FINGER)
1468                         strlcat(wacom_wac->name, " Pen", WACOM_NAME_MAX);
1469                 else if (features->touch_max)
1470                         strlcat(wacom_wac->name, " Finger", WACOM_NAME_MAX);
1471                 else
1472                         strlcat(wacom_wac->name, " Pad", WACOM_NAME_MAX);
1473
1474                 error = wacom_add_shared_data(hdev);
1475                 if (error)
1476                         goto fail_shared_data;
1477         }
1478
1479         if (!(features->quirks & WACOM_QUIRK_MONITOR) &&
1480              (features->quirks & WACOM_QUIRK_BATTERY)) {
1481                 error = wacom_initialize_battery(wacom);
1482                 if (error)
1483                         goto fail_battery;
1484         }
1485
1486         if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1487                 error = wacom_register_inputs(wacom);
1488                 if (error)
1489                         goto fail_register_inputs;
1490         }
1491
1492         if (hdev->bus == BUS_BLUETOOTH) {
1493                 error = device_create_file(&hdev->dev, &dev_attr_speed);
1494                 if (error)
1495                         hid_warn(hdev,
1496                                  "can't create sysfs speed attribute err: %d\n",
1497                                  error);
1498         }
1499
1500         if (features->type == HID_GENERIC)
1501                 connect_mask |= HID_CONNECT_DRIVER;
1502
1503         /* Regular HID work starts now */
1504         error = hid_hw_start(hdev, connect_mask);
1505         if (error) {
1506                 hid_err(hdev, "hw start failed\n");
1507                 goto fail_hw_start;
1508         }
1509
1510         /* Note that if query fails it is not a hard failure */
1511         wacom_query_tablet_data(hdev, features);
1512
1513         if (features->quirks & WACOM_QUIRK_MONITOR)
1514                 error = hid_hw_open(hdev);
1515
1516         if (wacom_wac->features.type == INTUOSHT && wacom_wac->features.touch_max) {
1517                 if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
1518                         wacom_wac->shared->touch_input = wacom_wac->input;
1519         }
1520
1521         return 0;
1522
1523 fail_hw_start:
1524         if (hdev->bus == BUS_BLUETOOTH)
1525                 device_remove_file(&hdev->dev, &dev_attr_speed);
1526 fail_register_inputs:
1527         wacom_clean_inputs(wacom);
1528         wacom_destroy_battery(wacom);
1529 fail_battery:
1530         wacom_remove_shared_data(wacom_wac);
1531 fail_shared_data:
1532         wacom_clean_inputs(wacom);
1533 fail_allocate_inputs:
1534 fail_type:
1535 fail_pktlen:
1536 fail_parse:
1537         kfree(wacom);
1538         hid_set_drvdata(hdev, NULL);
1539         return error;
1540 }
1541
1542 static void wacom_remove(struct hid_device *hdev)
1543 {
1544         struct wacom *wacom = hid_get_drvdata(hdev);
1545
1546         hid_hw_stop(hdev);
1547
1548         cancel_work_sync(&wacom->work);
1549         wacom_clean_inputs(wacom);
1550         if (hdev->bus == BUS_BLUETOOTH)
1551                 device_remove_file(&hdev->dev, &dev_attr_speed);
1552         wacom_destroy_battery(wacom);
1553         wacom_remove_shared_data(&wacom->wacom_wac);
1554
1555         hid_set_drvdata(hdev, NULL);
1556         kfree(wacom);
1557 }
1558
1559 #ifdef CONFIG_PM
1560 static int wacom_resume(struct hid_device *hdev)
1561 {
1562         struct wacom *wacom = hid_get_drvdata(hdev);
1563         struct wacom_features *features = &wacom->wacom_wac.features;
1564
1565         mutex_lock(&wacom->lock);
1566
1567         /* switch to wacom mode first */
1568         wacom_query_tablet_data(hdev, features);
1569         wacom_led_control(wacom);
1570
1571         mutex_unlock(&wacom->lock);
1572
1573         return 0;
1574 }
1575
1576 static int wacom_reset_resume(struct hid_device *hdev)
1577 {
1578         return wacom_resume(hdev);
1579 }
1580 #endif /* CONFIG_PM */
1581
1582 static struct hid_driver wacom_driver = {
1583         .name =         "wacom",
1584         .id_table =     wacom_ids,
1585         .probe =        wacom_probe,
1586         .remove =       wacom_remove,
1587         .event =        wacom_wac_event,
1588         .report =       wacom_wac_report,
1589 #ifdef CONFIG_PM
1590         .resume =       wacom_resume,
1591         .reset_resume = wacom_reset_resume,
1592 #endif
1593         .raw_event =    wacom_raw_event,
1594 };
1595 module_hid_driver(wacom_driver);
1596
1597 MODULE_VERSION(DRIVER_VERSION);
1598 MODULE_AUTHOR(DRIVER_AUTHOR);
1599 MODULE_DESCRIPTION(DRIVER_DESC);
1600 MODULE_LICENSE(DRIVER_LICENSE);