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/hid.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         int retval;
  75
  76         mutex_lock(&wacom->lock);
  77         retval = hid_hw_open(wacom->hdev);
  78         mutex_unlock(&wacom->lock);
  79
  80         return retval;
  81 }
  82
  83 static void wacom_close(struct input_dev *dev)
  84 {
  85         struct wacom *wacom = input_get_drvdata(dev);
  86
  87         mutex_lock(&wacom->lock);
  88         hid_hw_close(wacom->hdev);
  89         mutex_unlock(&wacom->lock);
  90 }
  91
  92 /*
  93  * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
  94  */
  95 static int wacom_calc_hid_res(int logical_extents, int physical_extents,
  96                                unsigned unit, int exponent)
  97 {
  98         struct hid_field field = {
  99                 .logical_maximum = logical_extents,
 100                 .physical_maximum = physical_extents,
 101                 .unit = unit,
 102                 .unit_exponent = exponent,
 103         };
 104
 105         return hidinput_calc_abs_res(&field, ABS_X);
 106 }
 107
 108 static void wacom_feature_mapping(struct hid_device *hdev,
 109                 struct hid_field *field, struct hid_usage *usage)
 110 {
 111         struct wacom *wacom = hid_get_drvdata(hdev);
 112         struct wacom_features *features = &wacom->wacom_wac.features;
 113
 114         switch (usage->hid) {
 115         case HID_DG_CONTACTMAX:
 116                 /* leave touch_max as is if predefined */
 117                 if (!features->touch_max)
 118                         features->touch_max = field->value[0];
 119                 break;
 120         }
 121 }
 122
 123 /*
 124  * Interface Descriptor of wacom devices can be incomplete and
 125  * inconsistent so wacom_features table is used to store stylus
 126  * device's packet lengths, various maximum values, and tablet
 127  * resolution based on product ID's.
 128  *
 129  * For devices that contain 2 interfaces, wacom_features table is
 130  * inaccurate for the touch interface.  Since the Interface Descriptor
 131  * for touch interfaces has pretty complete data, this function exists
 132  * to query tablet for this missing information instead of hard coding in
 133  * an additional table.
 134  *
 135  * A typical Interface Descriptor for a stylus will contain a
 136  * boot mouse application collection that is not of interest and this
 137  * function will ignore it.
 138  *
 139  * It also contains a digitizer application collection that also is not
 140  * of interest since any information it contains would be duplicate
 141  * of what is in wacom_features. Usually it defines a report of an array
 142  * of bytes that could be used as max length of the stylus packet returned.
 143  * If it happens to define a Digitizer-Stylus Physical Collection then
 144  * the X and Y logical values contain valid data but it is ignored.
 145  *
 146  * A typical Interface Descriptor for a touch interface will contain a
 147  * Digitizer-Finger Physical Collection which will define both logical
 148  * X/Y maximum as well as the physical size of tablet. Since touch
 149  * interfaces haven't supported pressure or distance, this is enough
 150  * information to override invalid values in the wacom_features table.
 151  *
 152  * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
 153  * data. We deal with them after returning from this function.
 154  */
 155 static void wacom_usage_mapping(struct hid_device *hdev,
 156                 struct hid_field *field, struct hid_usage *usage)
 157 {
 158         struct wacom *wacom = hid_get_drvdata(hdev);
 159         struct wacom_features *features = &wacom->wacom_wac.features;
 160         bool finger = (field->logical == HID_DG_FINGER) ||
 161                       (field->physical == HID_DG_FINGER);
 162         bool pen = (field->logical == HID_DG_STYLUS) ||
 163                    (field->physical == HID_DG_STYLUS);
 164
 165         /*
 166         * Requiring Stylus Usage will ignore boot mouse
 167         * X/Y values and some cases of invalid Digitizer X/Y
 168         * values commonly reported.
 169         */
 170         if (!pen && !finger)
 171                 return;
 172
 173         if (finger && !features->touch_max)
 174                 /* touch device at least supports one touch point */
 175                 features->touch_max = 1;
 176
 177         switch (usage->hid) {
 178         case HID_GD_X:
 179                 features->x_max = field->logical_maximum;
 180                 if (finger) {
 181                         features->device_type = BTN_TOOL_FINGER;
 182                         features->x_phy = field->physical_maximum;
 183                         if (features->type != BAMBOO_PT) {
 184                                 features->unit = field->unit;
 185                                 features->unitExpo = field->unit_exponent;
 186                         }
 187                 } else {
 188                         features->device_type = BTN_TOOL_PEN;
 189                 }
 190                 break;
 191         case HID_GD_Y:
 192                 features->y_max = field->logical_maximum;
 193                 if (finger) {
 194                         features->y_phy = field->physical_maximum;
 195                         if (features->type != BAMBOO_PT) {
 196                                 features->unit = field->unit;
 197                                 features->unitExpo = field->unit_exponent;
 198                         }
 199                 }
 200                 break;
 201         case HID_DG_TIPPRESSURE:
 202                 if (pen)
 203                         features->pressure_max = field->logical_maximum;
 204                 break;
 205         }
 206 }
 207
 208 static void wacom_parse_hid(struct hid_device *hdev,
 209                            struct wacom_features *features)
 210 {
 211         struct hid_report_enum *rep_enum;
 212         struct hid_report *hreport;
 213         int i, j;
 214
 215         /* check features first */
 216         rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
 217         list_for_each_entry(hreport, &rep_enum->report_list, list) {
 218                 for (i = 0; i < hreport->maxfield; i++) {
 219                         /* Ignore if report count is out of bounds. */
 220                         if (hreport->field[i]->report_count < 1)
 221                                 continue;
 222
 223                         for (j = 0; j < hreport->field[i]->maxusage; j++) {
 224                                 wacom_feature_mapping(hdev, hreport->field[i],
 225                                                 hreport->field[i]->usage + j);
 226                         }
 227                 }
 228         }
 229
 230         /* now check the input usages */
 231         rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
 232         list_for_each_entry(hreport, &rep_enum->report_list, list) {
 233
 234                 if (!hreport->maxfield)
 235                         continue;
 236
 237                 for (i = 0; i < hreport->maxfield; i++)
 238                         for (j = 0; j < hreport->field[i]->maxusage; j++)
 239                                 wacom_usage_mapping(hdev, hreport->field[i],
 240                                                 hreport->field[i]->usage + j);
 241         }
 242 }
 243
 244 static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
 245                 int length, int mode)
 246 {
 247         unsigned char *rep_data;
 248         int error = -ENOMEM, limit = 0;
 249
 250         rep_data = kzalloc(length, GFP_KERNEL);
 251         if (!rep_data)
 252                 return error;
 253
 254         do {
 255                 rep_data[0] = report_id;
 256                 rep_data[1] = mode;
 257
 258                 error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
 259                                          length, 1);
 260                 if (error >= 0)
 261                         error = wacom_get_report(hdev, HID_FEATURE_REPORT,
 262                                                  rep_data, length, 1);
 263         } while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
 264
 265         kfree(rep_data);
 266
 267         return error < 0 ? error : 0;
 268 }
 269
 270 static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
 271                 struct wacom_features *features)
 272 {
 273         struct wacom *wacom = hid_get_drvdata(hdev);
 274         int ret;
 275         u8 rep_data[2];
 276
 277         switch (features->type) {
 278         case GRAPHIRE_BT:
 279                 rep_data[0] = 0x03;
 280                 rep_data[1] = 0x00;
 281                 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
 282                                         3);
 283
 284                 if (ret >= 0) {
 285                         rep_data[0] = speed == 0 ? 0x05 : 0x06;
 286                         rep_data[1] = 0x00;
 287
 288                         ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
 289                                                 rep_data, 2, 3);
 290
 291                         if (ret >= 0) {
 292                                 wacom->wacom_wac.bt_high_speed = speed;
 293                                 return 0;
 294                         }
 295                 }
 296
 297                 /*
 298                  * Note that if the raw queries fail, it's not a hard failure
 299                  * and it is safe to continue
 300                  */
 301                 hid_warn(hdev, "failed to poke device, command %d, err %d\n",
 302                          rep_data[0], ret);
 303                 break;
 304         case INTUOS4WL:
 305                 if (speed == 1)
 306                         wacom->wacom_wac.bt_features &= ~0x20;
 307                 else
 308                         wacom->wacom_wac.bt_features |= 0x20;
 309
 310                 rep_data[0] = 0x03;
 311                 rep_data[1] = wacom->wacom_wac.bt_features;
 312
 313                 ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
 314                                         1);
 315                 if (ret >= 0)
 316                         wacom->wacom_wac.bt_high_speed = speed;
 317                 break;
 318         }
 319
 320         return 0;
 321 }
 322
 323 /*
 324  * Switch the tablet into its most-capable mode. Wacom tablets are
 325  * typically configured to power-up in a mode which sends mouse-like
 326  * reports to the OS. To get absolute position, pressure data, etc.
 327  * from the tablet, it is necessary to switch the tablet out of this
 328  * mode and into one which sends the full range of tablet data.
 329  */
 330 static int wacom_query_tablet_data(struct hid_device *hdev,
 331                 struct wacom_features *features)
 332 {
 333         if (hdev->bus == BUS_BLUETOOTH)
 334                 return wacom_bt_query_tablet_data(hdev, 1, features);
 335
 336         if (features->device_type == BTN_TOOL_FINGER) {
 337                 if (features->type > TABLETPC) {
 338                         /* MT Tablet PC touch */
 339                         return wacom_set_device_mode(hdev, 3, 4, 4);
 340                 }
 341                 else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
 342                         return wacom_set_device_mode(hdev, 18, 3, 2);
 343                 }
 344         } else if (features->device_type == BTN_TOOL_PEN) {
 345                 if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
 346                         return wacom_set_device_mode(hdev, 2, 2, 2);
 347                 }
 348         }
 349
 350         return 0;
 351 }
 352
 353 static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
 354                                          struct wacom_features *features)
 355 {
 356         struct wacom *wacom = hid_get_drvdata(hdev);
 357         struct usb_interface *intf = wacom->intf;
 358
 359         /* default features */
 360         features->device_type = BTN_TOOL_PEN;
 361         features->x_fuzz = 4;
 362         features->y_fuzz = 4;
 363         features->pressure_fuzz = 0;
 364         features->distance_fuzz = 0;
 365
 366         /*
 367          * The wireless device HID is basic and layout conflicts with
 368          * other tablets (monitor and touch interface can look like pen).
 369          * Skip the query for this type and modify defaults based on
 370          * interface number.
 371          */
 372         if (features->type == WIRELESS) {
 373                 if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
 374                         features->device_type = 0;
 375                 } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
 376                         features->device_type = BTN_TOOL_FINGER;
 377                         features->pktlen = WACOM_PKGLEN_BBTOUCH3;
 378                 }
 379         }
 380
 381         /* only devices that support touch need to retrieve the info */
 382         if (features->type < BAMBOO_PT)
 383                 return;
 384
 385         wacom_parse_hid(hdev, features);
 386 }
 387
 388 struct wacom_hdev_data {
 389         struct list_head list;
 390         struct kref kref;
 391         struct hid_device *dev;
 392         struct wacom_shared shared;
 393 };
 394
 395 static LIST_HEAD(wacom_udev_list);
 396 static DEFINE_MUTEX(wacom_udev_list_lock);
 397
 398 static bool wacom_are_sibling(struct hid_device *hdev,
 399                 struct hid_device *sibling)
 400 {
 401         struct wacom *wacom = hid_get_drvdata(hdev);
 402         struct wacom_features *features = &wacom->wacom_wac.features;
 403         int vid = features->oVid;
 404         int pid = features->oPid;
 405         int n1,n2;
 406
 407         if (vid == 0 && pid == 0) {
 408                 vid = hdev->vendor;
 409                 pid = hdev->product;
 410         }
 411
 412         if (vid != sibling->vendor || pid != sibling->product)
 413                 return false;
 414
 415         /* Compare the physical path. */
 416         n1 = strrchr(hdev->phys, '.') - hdev->phys;
 417         n2 = strrchr(sibling->phys, '.') - sibling->phys;
 418         if (n1 != n2 || n1 <= 0 || n2 <= 0)
 419                 return false;
 420
 421         return !strncmp(hdev->phys, sibling->phys, n1);
 422 }
 423
 424 static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
 425 {
 426         struct wacom_hdev_data *data;
 427
 428         list_for_each_entry(data, &wacom_udev_list, list) {
 429                 if (wacom_are_sibling(hdev, data->dev)) {
 430                         kref_get(&data->kref);
 431                         return data;
 432                 }
 433         }
 434
 435         return NULL;
 436 }
 437
 438 static int wacom_add_shared_data(struct hid_device *hdev)
 439 {
 440         struct wacom *wacom = hid_get_drvdata(hdev);
 441         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
 442         struct wacom_hdev_data *data;
 443         int retval = 0;
 444
 445         mutex_lock(&wacom_udev_list_lock);
 446
 447         data = wacom_get_hdev_data(hdev);
 448         if (!data) {
 449                 data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
 450                 if (!data) {
 451                         retval = -ENOMEM;
 452                         goto out;
 453                 }
 454
 455                 kref_init(&data->kref);
 456                 data->dev = hdev;
 457                 list_add_tail(&data->list, &wacom_udev_list);
 458         }
 459
 460         wacom_wac->shared = &data->shared;
 461
 462 out:
 463         mutex_unlock(&wacom_udev_list_lock);
 464         return retval;
 465 }
 466
 467 static void wacom_release_shared_data(struct kref *kref)
 468 {
 469         struct wacom_hdev_data *data =
 470                 container_of(kref, struct wacom_hdev_data, kref);
 471
 472         mutex_lock(&wacom_udev_list_lock);
 473         list_del(&data->list);
 474         mutex_unlock(&wacom_udev_list_lock);
 475
 476         kfree(data);
 477 }
 478
 479 static void wacom_remove_shared_data(struct wacom_wac *wacom)
 480 {
 481         struct wacom_hdev_data *data;
 482
 483         if (wacom->shared) {
 484                 data = container_of(wacom->shared, struct wacom_hdev_data, shared);
 485                 kref_put(&data->kref, wacom_release_shared_data);
 486                 wacom->shared = NULL;
 487         }
 488 }
 489
 490 static int wacom_led_control(struct wacom *wacom)
 491 {
 492         unsigned char *buf;
 493         int retval;
 494         unsigned char report_id = WAC_CMD_LED_CONTROL;
 495         int buf_size = 9;
 496
 497         if (wacom->wacom_wac.pid) { /* wireless connected */
 498                 report_id = WAC_CMD_WL_LED_CONTROL;
 499                 buf_size = 13;
 500         }
 501         buf = kzalloc(buf_size, GFP_KERNEL);
 502         if (!buf)
 503                 return -ENOMEM;
 504
 505         if (wacom->wacom_wac.features.type >= INTUOS5S &&
 506             wacom->wacom_wac.features.type <= INTUOSPL) {
 507                 /*
 508                  * Touch Ring and crop mark LED luminance may take on
 509                  * one of four values:
 510                  *    0 = Low; 1 = Medium; 2 = High; 3 = Off
 511                  */
 512                 int ring_led = wacom->led.select[0] & 0x03;
 513                 int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
 514                 int crop_lum = 0;
 515                 unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
 516
 517                 buf[0] = report_id;
 518                 if (wacom->wacom_wac.pid) {
 519                         wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
 520                                          buf, buf_size, WAC_CMD_RETRIES);
 521                         buf[0] = report_id;
 522                         buf[4] = led_bits;
 523                 } else
 524                         buf[1] = led_bits;
 525         }
 526         else {
 527                 int led = wacom->led.select[0] | 0x4;
 528
 529                 if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
 530                     wacom->wacom_wac.features.type == WACOM_24HD)
 531                         led |= (wacom->led.select[1] << 4) | 0x40;
 532
 533                 buf[0] = report_id;
 534                 buf[1] = led;
 535                 buf[2] = wacom->led.llv;
 536                 buf[3] = wacom->led.hlv;
 537                 buf[4] = wacom->led.img_lum;
 538         }
 539
 540         retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
 541                                   WAC_CMD_RETRIES);
 542         kfree(buf);
 543
 544         return retval;
 545 }
 546
 547 static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
 548                 const unsigned len, const void *img)
 549 {
 550         unsigned char *buf;
 551         int i, retval;
 552         const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
 553
 554         buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
 555         if (!buf)
 556                 return -ENOMEM;
 557
 558         /* Send 'start' command */
 559         buf[0] = WAC_CMD_ICON_START;
 560         buf[1] = 1;
 561         retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
 562                                   WAC_CMD_RETRIES);
 563         if (retval < 0)
 564                 goto out;
 565
 566         buf[0] = xfer_id;
 567         buf[1] = button_id & 0x07;
 568         for (i = 0; i < 4; i++) {
 569                 buf[2] = i;
 570                 memcpy(buf + 3, img + i * chunk_len, chunk_len);
 571
 572                 retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
 573                                           buf, chunk_len + 3, WAC_CMD_RETRIES);
 574                 if (retval < 0)
 575                         break;
 576         }
 577
 578         /* Send 'stop' */
 579         buf[0] = WAC_CMD_ICON_START;
 580         buf[1] = 0;
 581         wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
 582                          WAC_CMD_RETRIES);
 583
 584 out:
 585         kfree(buf);
 586         return retval;
 587 }
 588
 589 static ssize_t wacom_led_select_store(struct device *dev, int set_id,
 590                                       const char *buf, size_t count)
 591 {
 592         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 593         struct wacom *wacom = hid_get_drvdata(hdev);
 594         unsigned int id;
 595         int err;
 596
 597         err = kstrtouint(buf, 10, &id);
 598         if (err)
 599                 return err;
 600
 601         mutex_lock(&wacom->lock);
 602
 603         wacom->led.select[set_id] = id & 0x3;
 604         err = wacom_led_control(wacom);
 605
 606         mutex_unlock(&wacom->lock);
 607
 608         return err < 0 ? err : count;
 609 }
 610
 611 #define DEVICE_LED_SELECT_ATTR(SET_ID)                                  \
 612 static ssize_t wacom_led##SET_ID##_select_store(struct device *dev,     \
 613         struct device_attribute *attr, const char *buf, size_t count)   \
 614 {                                                                       \
 615         return wacom_led_select_store(dev, SET_ID, buf, count);         \
 616 }                                                                       \
 617 static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,      \
 618         struct device_attribute *attr, char *buf)                       \
 619 {                                                                       \
 620         struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
 621         struct wacom *wacom = hid_get_drvdata(hdev);                    \
 622         return scnprintf(buf, PAGE_SIZE, "%d\n",                        \
 623                          wacom->led.select[SET_ID]);                    \
 624 }                                                                       \
 625 static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,       \
 626                     wacom_led##SET_ID##_select_show,                    \
 627                     wacom_led##SET_ID##_select_store)
 628
 629 DEVICE_LED_SELECT_ATTR(0);
 630 DEVICE_LED_SELECT_ATTR(1);
 631
 632 static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
 633                                      const char *buf, size_t count)
 634 {
 635         unsigned int value;
 636         int err;
 637
 638         err = kstrtouint(buf, 10, &value);
 639         if (err)
 640                 return err;
 641
 642         mutex_lock(&wacom->lock);
 643
 644         *dest = value & 0x7f;
 645         err = wacom_led_control(wacom);
 646
 647         mutex_unlock(&wacom->lock);
 648
 649         return err < 0 ? err : count;
 650 }
 651
 652 #define DEVICE_LUMINANCE_ATTR(name, field)                              \
 653 static ssize_t wacom_##name##_luminance_store(struct device *dev,       \
 654         struct device_attribute *attr, const char *buf, size_t count)   \
 655 {                                                                       \
 656         struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
 657         struct wacom *wacom = hid_get_drvdata(hdev);                    \
 658                                                                         \
 659         return wacom_luminance_store(wacom, &wacom->led.field,          \
 660                                      buf, count);                       \
 661 }                                                                       \
 662 static ssize_t wacom_##name##_luminance_show(struct device *dev,        \
 663         struct device_attribute *attr, char *buf)                       \
 664 {                                                                       \
 665         struct wacom *wacom = dev_get_drvdata(dev);                     \
 666         return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field);     \
 667 }                                                                       \
 668 static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,                  \
 669                    wacom_##name##_luminance_show,                       \
 670                    wacom_##name##_luminance_store)
 671
 672 DEVICE_LUMINANCE_ATTR(status0, llv);
 673 DEVICE_LUMINANCE_ATTR(status1, hlv);
 674 DEVICE_LUMINANCE_ATTR(buttons, img_lum);
 675
 676 static ssize_t wacom_button_image_store(struct device *dev, int button_id,
 677                                         const char *buf, size_t count)
 678 {
 679         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 680         struct wacom *wacom = hid_get_drvdata(hdev);
 681         int err;
 682         unsigned len;
 683         u8 xfer_id;
 684
 685         if (hdev->bus == BUS_BLUETOOTH) {
 686                 len = 256;
 687                 xfer_id = WAC_CMD_ICON_BT_XFER;
 688         } else {
 689                 len = 1024;
 690                 xfer_id = WAC_CMD_ICON_XFER;
 691         }
 692
 693         if (count != len)
 694                 return -EINVAL;
 695
 696         mutex_lock(&wacom->lock);
 697
 698         err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
 699
 700         mutex_unlock(&wacom->lock);
 701
 702         return err < 0 ? err : count;
 703 }
 704
 705 #define DEVICE_BTNIMG_ATTR(BUTTON_ID)                                   \
 706 static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev,      \
 707         struct device_attribute *attr, const char *buf, size_t count)   \
 708 {                                                                       \
 709         return wacom_button_image_store(dev, BUTTON_ID, buf, count);    \
 710 }                                                                       \
 711 static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,        \
 712                    NULL, wacom_btnimg##BUTTON_ID##_store)
 713
 714 DEVICE_BTNIMG_ATTR(0);
 715 DEVICE_BTNIMG_ATTR(1);
 716 DEVICE_BTNIMG_ATTR(2);
 717 DEVICE_BTNIMG_ATTR(3);
 718 DEVICE_BTNIMG_ATTR(4);
 719 DEVICE_BTNIMG_ATTR(5);
 720 DEVICE_BTNIMG_ATTR(6);
 721 DEVICE_BTNIMG_ATTR(7);
 722
 723 static struct attribute *cintiq_led_attrs[] = {
 724         &dev_attr_status_led0_select.attr,
 725         &dev_attr_status_led1_select.attr,
 726         NULL
 727 };
 728
 729 static struct attribute_group cintiq_led_attr_group = {
 730         .name = "wacom_led",
 731         .attrs = cintiq_led_attrs,
 732 };
 733
 734 static struct attribute *intuos4_led_attrs[] = {
 735         &dev_attr_status0_luminance.attr,
 736         &dev_attr_status1_luminance.attr,
 737         &dev_attr_status_led0_select.attr,
 738         &dev_attr_buttons_luminance.attr,
 739         &dev_attr_button0_rawimg.attr,
 740         &dev_attr_button1_rawimg.attr,
 741         &dev_attr_button2_rawimg.attr,
 742         &dev_attr_button3_rawimg.attr,
 743         &dev_attr_button4_rawimg.attr,
 744         &dev_attr_button5_rawimg.attr,
 745         &dev_attr_button6_rawimg.attr,
 746         &dev_attr_button7_rawimg.attr,
 747         NULL
 748 };
 749
 750 static struct attribute_group intuos4_led_attr_group = {
 751         .name = "wacom_led",
 752         .attrs = intuos4_led_attrs,
 753 };
 754
 755 static struct attribute *intuos5_led_attrs[] = {
 756         &dev_attr_status0_luminance.attr,
 757         &dev_attr_status_led0_select.attr,
 758         NULL
 759 };
 760
 761 static struct attribute_group intuos5_led_attr_group = {
 762         .name = "wacom_led",
 763         .attrs = intuos5_led_attrs,
 764 };
 765
 766 static int wacom_initialize_leds(struct wacom *wacom)
 767 {
 768         int error;
 769
 770         /* Initialize default values */
 771         switch (wacom->wacom_wac.features.type) {
 772         case INTUOS4S:
 773         case INTUOS4:
 774         case INTUOS4WL:
 775         case INTUOS4L:
 776                 wacom->led.select[0] = 0;
 777                 wacom->led.select[1] = 0;
 778                 wacom->led.llv = 10;
 779                 wacom->led.hlv = 20;
 780                 wacom->led.img_lum = 10;
 781                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 782                                            &intuos4_led_attr_group);
 783                 break;
 784
 785         case WACOM_24HD:
 786         case WACOM_21UX2:
 787                 wacom->led.select[0] = 0;
 788                 wacom->led.select[1] = 0;
 789                 wacom->led.llv = 0;
 790                 wacom->led.hlv = 0;
 791                 wacom->led.img_lum = 0;
 792
 793                 error = sysfs_create_group(&wacom->hdev->dev.kobj,
 794                                            &cintiq_led_attr_group);
 795                 break;
 796
 797         case INTUOS5S:
 798         case INTUOS5:
 799         case INTUOS5L:
 800         case INTUOSPS:
 801         case INTUOSPM:
 802         case INTUOSPL:
 803                 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN) {
 804                         wacom->led.select[0] = 0;
 805                         wacom->led.select[1] = 0;
 806                         wacom->led.llv = 32;
 807                         wacom->led.hlv = 0;
 808                         wacom->led.img_lum = 0;
 809
 810                         error = sysfs_create_group(&wacom->hdev->dev.kobj,
 811                                                   &intuos5_led_attr_group);
 812                 } else
 813                         return 0;
 814                 break;
 815
 816         default:
 817                 return 0;
 818         }
 819
 820         if (error) {
 821                 hid_err(wacom->hdev,
 822                         "cannot create sysfs group err: %d\n", error);
 823                 return error;
 824         }
 825         wacom_led_control(wacom);
 826         wacom->led_initialized = true;
 827
 828         return 0;
 829 }
 830
 831 static void wacom_destroy_leds(struct wacom *wacom)
 832 {
 833         if (!wacom->led_initialized)
 834                 return;
 835
 836         wacom->led_initialized = false;
 837
 838         switch (wacom->wacom_wac.features.type) {
 839         case INTUOS4S:
 840         case INTUOS4:
 841         case INTUOS4WL:
 842         case INTUOS4L:
 843                 sysfs_remove_group(&wacom->hdev->dev.kobj,
 844                                    &intuos4_led_attr_group);
 845                 break;
 846
 847         case WACOM_24HD:
 848         case WACOM_21UX2:
 849                 sysfs_remove_group(&wacom->hdev->dev.kobj,
 850                                    &cintiq_led_attr_group);
 851                 break;
 852
 853         case INTUOS5S:
 854         case INTUOS5:
 855         case INTUOS5L:
 856         case INTUOSPS:
 857         case INTUOSPM:
 858         case INTUOSPL:
 859                 if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN)
 860                         sysfs_remove_group(&wacom->hdev->dev.kobj,
 861                                            &intuos5_led_attr_group);
 862                 break;
 863         }
 864 }
 865
 866 static enum power_supply_property wacom_battery_props[] = {
 867         POWER_SUPPLY_PROP_STATUS,
 868         POWER_SUPPLY_PROP_SCOPE,
 869         POWER_SUPPLY_PROP_CAPACITY
 870 };
 871
 872 static enum power_supply_property wacom_ac_props[] = {
 873         POWER_SUPPLY_PROP_PRESENT,
 874         POWER_SUPPLY_PROP_ONLINE,
 875         POWER_SUPPLY_PROP_SCOPE,
 876 };
 877
 878 static int wacom_battery_get_property(struct power_supply *psy,
 879                                       enum power_supply_property psp,
 880                                       union power_supply_propval *val)
 881 {
 882         struct wacom *wacom = container_of(psy, struct wacom, battery);
 883         int ret = 0;
 884
 885         switch (psp) {
 886                 case POWER_SUPPLY_PROP_SCOPE:
 887                         val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 888                         break;
 889                 case POWER_SUPPLY_PROP_CAPACITY:
 890                         val->intval =
 891                                 wacom->wacom_wac.battery_capacity;
 892                         break;
 893                 case POWER_SUPPLY_PROP_STATUS:
 894                         if (wacom->wacom_wac.bat_charging)
 895                                 val->intval = POWER_SUPPLY_STATUS_CHARGING;
 896                         else if (wacom->wacom_wac.battery_capacity == 100 &&
 897                                     wacom->wacom_wac.ps_connected)
 898                                 val->intval = POWER_SUPPLY_STATUS_FULL;
 899                         else
 900                                 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
 901                         break;
 902                 default:
 903                         ret = -EINVAL;
 904                         break;
 905         }
 906
 907         return ret;
 908 }
 909
 910 static int wacom_ac_get_property(struct power_supply *psy,
 911                                 enum power_supply_property psp,
 912                                 union power_supply_propval *val)
 913 {
 914         struct wacom *wacom = container_of(psy, struct wacom, ac);
 915         int ret = 0;
 916
 917         switch (psp) {
 918         case POWER_SUPPLY_PROP_PRESENT:
 919                 /* fall through */
 920         case POWER_SUPPLY_PROP_ONLINE:
 921                 val->intval = wacom->wacom_wac.ps_connected;
 922                 break;
 923         case POWER_SUPPLY_PROP_SCOPE:
 924                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 925                 break;
 926         default:
 927                 ret = -EINVAL;
 928                 break;
 929         }
 930         return ret;
 931 }
 932
 933 static int wacom_initialize_battery(struct wacom *wacom)
 934 {
 935         static atomic_t battery_no = ATOMIC_INIT(0);
 936         int error;
 937         unsigned long n;
 938
 939         if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
 940                 n = atomic_inc_return(&battery_no) - 1;
 941
 942                 wacom->battery.properties = wacom_battery_props;
 943                 wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
 944                 wacom->battery.get_property = wacom_battery_get_property;
 945                 sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
 946                 wacom->battery.name = wacom->wacom_wac.bat_name;
 947                 wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
 948                 wacom->battery.use_for_apm = 0;
 949
 950                 wacom->ac.properties = wacom_ac_props;
 951                 wacom->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
 952                 wacom->ac.get_property = wacom_ac_get_property;
 953                 sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
 954                 wacom->ac.name = wacom->wacom_wac.ac_name;
 955                 wacom->ac.type = POWER_SUPPLY_TYPE_MAINS;
 956                 wacom->ac.use_for_apm = 0;
 957
 958                 error = power_supply_register(&wacom->hdev->dev,
 959                                               &wacom->battery);
 960                 if (error)
 961                         return error;
 962
 963                 power_supply_powers(&wacom->battery, &wacom->hdev->dev);
 964
 965                 error = power_supply_register(&wacom->hdev->dev, &wacom->ac);
 966                 if (error) {
 967                         power_supply_unregister(&wacom->battery);
 968                         return error;
 969                 }
 970
 971                 power_supply_powers(&wacom->ac, &wacom->hdev->dev);
 972         }
 973
 974         return 0;
 975 }
 976
 977 static void wacom_destroy_battery(struct wacom *wacom)
 978 {
 979         if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
 980              wacom->battery.dev) {
 981                 power_supply_unregister(&wacom->battery);
 982                 wacom->battery.dev = NULL;
 983                 power_supply_unregister(&wacom->ac);
 984                 wacom->ac.dev = NULL;
 985         }
 986 }
 987
 988 static ssize_t wacom_show_speed(struct device *dev,
 989                                 struct device_attribute
 990                                 *attr, char *buf)
 991 {
 992         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 993         struct wacom *wacom = hid_get_drvdata(hdev);
 994
 995         return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
 996 }
 997
 998 static ssize_t wacom_store_speed(struct device *dev,
 999                                 struct device_attribute *attr,
1000                                 const char *buf, size_t count)
1001 {
1002         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1003         struct wacom *wacom = hid_get_drvdata(hdev);
1004         u8 new_speed;
1005
1006         if (kstrtou8(buf, 0, &new_speed))
1007                 return -EINVAL;
1008
1009         if (new_speed != 0 && new_speed != 1)
1010                 return -EINVAL;
1011
1012         wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
1013
1014         return count;
1015 }
1016
1017 static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1018                 wacom_show_speed, wacom_store_speed);
1019
1020 static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1021 {
1022         struct input_dev *input_dev;
1023         struct hid_device *hdev = wacom->hdev;
1024         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1025
1026         input_dev = input_allocate_device();
1027         if (!input_dev)
1028                 return NULL;
1029
1030         input_dev->name = wacom_wac->name;
1031         input_dev->phys = hdev->phys;
1032         input_dev->dev.parent = &hdev->dev;
1033         input_dev->open = wacom_open;
1034         input_dev->close = wacom_close;
1035         input_dev->uniq = hdev->uniq;
1036         input_dev->id.bustype = hdev->bus;
1037         input_dev->id.vendor  = hdev->vendor;
1038         input_dev->id.product = hdev->product;
1039         input_dev->id.version = hdev->version;
1040         input_set_drvdata(input_dev, wacom);
1041
1042         return input_dev;
1043 }
1044
1045 static void wacom_unregister_inputs(struct wacom *wacom)
1046 {
1047         if (wacom->wacom_wac.input)
1048                 input_unregister_device(wacom->wacom_wac.input);
1049         if (wacom->wacom_wac.pad_input)
1050                 input_unregister_device(wacom->wacom_wac.pad_input);
1051         wacom->wacom_wac.input = NULL;
1052         wacom->wacom_wac.pad_input = NULL;
1053         wacom_destroy_leds(wacom);
1054 }
1055
1056 static int wacom_register_inputs(struct wacom *wacom)
1057 {
1058         struct input_dev *input_dev, *pad_input_dev;
1059         struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1060         int error;
1061
1062         input_dev = wacom_allocate_input(wacom);
1063         pad_input_dev = wacom_allocate_input(wacom);
1064         if (!input_dev || !pad_input_dev) {
1065                 error = -ENOMEM;
1066                 goto fail1;
1067         }
1068
1069         wacom_wac->input = input_dev;
1070         wacom_wac->pad_input = pad_input_dev;
1071         wacom_wac->pad_input->name = wacom_wac->pad_name;
1072
1073         error = wacom_setup_input_capabilities(input_dev, wacom_wac);
1074         if (error)
1075                 goto fail2;
1076
1077         error = input_register_device(input_dev);
1078         if (error)
1079                 goto fail2;
1080
1081         error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
1082         if (error) {
1083                 /* no pad in use on this interface */
1084                 input_free_device(pad_input_dev);
1085                 wacom_wac->pad_input = NULL;
1086                 pad_input_dev = NULL;
1087         } else {
1088                 error = input_register_device(pad_input_dev);
1089                 if (error)
1090                         goto fail3;
1091
1092                 error = wacom_initialize_leds(wacom);
1093                 if (error)
1094                         goto fail4;
1095         }
1096
1097         return 0;
1098
1099 fail4:
1100         input_unregister_device(pad_input_dev);
1101         pad_input_dev = NULL;
1102 fail3:
1103         input_unregister_device(input_dev);
1104         input_dev = NULL;
1105 fail2:
1106         wacom_wac->input = NULL;
1107         wacom_wac->pad_input = NULL;
1108 fail1:
1109         if (input_dev)
1110                 input_free_device(input_dev);
1111         if (pad_input_dev)
1112                 input_free_device(pad_input_dev);
1113         return error;
1114 }
1115
1116 static void wacom_wireless_work(struct work_struct *work)
1117 {
1118         struct wacom *wacom = container_of(work, struct wacom, work);
1119         struct usb_device *usbdev = wacom->usbdev;
1120         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1121         struct hid_device *hdev1, *hdev2;
1122         struct wacom *wacom1, *wacom2;
1123         struct wacom_wac *wacom_wac1, *wacom_wac2;
1124         int error;
1125
1126         /*
1127          * Regardless if this is a disconnect or a new tablet,
1128          * remove any existing input and battery devices.
1129          */
1130
1131         wacom_destroy_battery(wacom);
1132
1133         /* Stylus interface */
1134         hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
1135         wacom1 = hid_get_drvdata(hdev1);
1136         wacom_wac1 = &(wacom1->wacom_wac);
1137         wacom_unregister_inputs(wacom1);
1138
1139         /* Touch interface */
1140         hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
1141         wacom2 = hid_get_drvdata(hdev2);
1142         wacom_wac2 = &(wacom2->wacom_wac);
1143         wacom_unregister_inputs(wacom2);
1144
1145         if (wacom_wac->pid == 0) {
1146                 hid_info(wacom->hdev, "wireless tablet disconnected\n");
1147                 wacom_wac1->shared->type = 0;
1148         } else {
1149                 const struct hid_device_id *id = wacom_ids;
1150
1151                 hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1152                          wacom_wac->pid);
1153
1154                 while (id->bus) {
1155                         if (id->vendor == USB_VENDOR_ID_WACOM &&
1156                             id->product == wacom_wac->pid)
1157                                 break;
1158                         id++;
1159                 }
1160
1161                 if (!id->bus) {
1162                         hid_info(wacom->hdev, "ignoring unknown PID.\n");
1163                         return;
1164                 }
1165
1166                 /* Stylus interface */
1167                 wacom_wac1->features =
1168                         *((struct wacom_features *)id->driver_data);
1169                 wacom_wac1->features.device_type = BTN_TOOL_PEN;
1170                 snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
1171                          wacom_wac1->features.name);
1172                 snprintf(wacom_wac1->pad_name, WACOM_NAME_MAX, "%s (WL) Pad",
1173                          wacom_wac1->features.name);
1174                 wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
1175                 wacom_wac1->shared->type = wacom_wac1->features.type;
1176                 wacom_wac1->pid = wacom_wac->pid;
1177                 error = wacom_register_inputs(wacom1);
1178                 if (error)
1179                         goto fail;
1180
1181                 /* Touch interface */
1182                 if (wacom_wac1->features.touch_max ||
1183                     wacom_wac1->features.type == INTUOSHT) {
1184                         wacom_wac2->features =
1185                                 *((struct wacom_features *)id->driver_data);
1186                         wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
1187                         wacom_wac2->features.device_type = BTN_TOOL_FINGER;
1188                         wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
1189                         if (wacom_wac2->features.touch_max)
1190                                 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1191                                          "%s (WL) Finger",wacom_wac2->features.name);
1192                         else
1193                                 snprintf(wacom_wac2->name, WACOM_NAME_MAX,
1194                                          "%s (WL) Pad",wacom_wac2->features.name);
1195                         snprintf(wacom_wac2->pad_name, WACOM_NAME_MAX,
1196                                  "%s (WL) Pad", wacom_wac2->features.name);
1197                         wacom_wac2->pid = wacom_wac->pid;
1198                         error = wacom_register_inputs(wacom2);
1199                         if (error)
1200                                 goto fail;
1201
1202                         if (wacom_wac1->features.type == INTUOSHT &&
1203                             wacom_wac1->features.touch_max)
1204                                 wacom_wac->shared->touch_input = wacom_wac2->input;
1205                 }
1206
1207                 error = wacom_initialize_battery(wacom);
1208                 if (error)
1209                         goto fail;
1210         }
1211
1212         return;
1213
1214 fail:
1215         wacom_unregister_inputs(wacom1);
1216         wacom_unregister_inputs(wacom2);
1217         return;
1218 }
1219
1220 /*
1221  * Not all devices report physical dimensions from HID.
1222  * Compute the default from hardcoded logical dimension
1223  * and resolution before driver overwrites them.
1224  */
1225 static void wacom_set_default_phy(struct wacom_features *features)
1226 {
1227         if (features->x_resolution) {
1228                 features->x_phy = (features->x_max * 100) /
1229                                         features->x_resolution;
1230                 features->y_phy = (features->y_max * 100) /
1231                                         features->y_resolution;
1232         }
1233 }
1234
1235 static void wacom_calculate_res(struct wacom_features *features)
1236 {
1237         features->x_resolution = wacom_calc_hid_res(features->x_max,
1238                                                     features->x_phy,
1239                                                     features->unit,
1240                                                     features->unitExpo);
1241         features->y_resolution = wacom_calc_hid_res(features->y_max,
1242                                                     features->y_phy,
1243                                                     features->unit,
1244                                                     features->unitExpo);
1245 }
1246
1247 static int wacom_hid_report_len(struct hid_report *report)
1248 {
1249         /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
1250         return ((report->size - 1) >> 3) + 1 + (report->id > 0);
1251 }
1252
1253 static size_t wacom_compute_pktlen(struct hid_device *hdev)
1254 {
1255         struct hid_report_enum *report_enum;
1256         struct hid_report *report;
1257         size_t size = 0;
1258
1259         report_enum = hdev->report_enum + HID_INPUT_REPORT;
1260
1261         list_for_each_entry(report, &report_enum->report_list, list) {
1262                 size_t report_size = wacom_hid_report_len(report);
1263                 if (report_size > size)
1264                         size = report_size;
1265         }
1266
1267         return size;
1268 }
1269
1270 static int wacom_probe(struct hid_device *hdev,
1271                 const struct hid_device_id *id)
1272 {
1273         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1274         struct usb_device *dev = interface_to_usbdev(intf);
1275         struct wacom *wacom;
1276         struct wacom_wac *wacom_wac;
1277         struct wacom_features *features;
1278         int error;
1279
1280         if (!id->driver_data)
1281                 return -EINVAL;
1282
1283         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1284         if (!wacom)
1285                 return -ENOMEM;
1286
1287         hid_set_drvdata(hdev, wacom);
1288         wacom->hdev = hdev;
1289
1290         /* ask for the report descriptor to be loaded by HID */
1291         error = hid_parse(hdev);
1292         if (error) {
1293                 hid_err(hdev, "parse failed\n");
1294                 goto fail1;
1295         }
1296
1297         wacom_wac = &wacom->wacom_wac;
1298         wacom_wac->features = *((struct wacom_features *)id->driver_data);
1299         features = &wacom_wac->features;
1300         features->pktlen = wacom_compute_pktlen(hdev);
1301         if (features->pktlen > WACOM_PKGLEN_MAX) {
1302                 error = -EINVAL;
1303                 goto fail1;
1304         }
1305
1306         if (features->check_for_hid_type && features->hid_type != hdev->type) {
1307                 error = -ENODEV;
1308                 goto fail1;
1309         }
1310
1311         wacom->usbdev = dev;
1312         wacom->intf = intf;
1313         mutex_init(&wacom->lock);
1314         INIT_WORK(&wacom->work, wacom_wireless_work);
1315
1316         /* set the default size in case we do not get them from hid */
1317         wacom_set_default_phy(features);
1318
1319         /* Retrieve the physical and logical size for touch devices */
1320         wacom_retrieve_hid_descriptor(hdev, features);
1321
1322         /*
1323          * Intuos5 has no useful data about its touch interface in its
1324          * HID descriptor. If this is the touch interface (PacketSize
1325          * of WACOM_PKGLEN_BBTOUCH3), override the table values.
1326          */
1327         if (features->type >= INTUOS5S && features->type <= INTUOSHT) {
1328                 if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
1329                         features->device_type = BTN_TOOL_FINGER;
1330
1331                         features->x_max = 4096;
1332                         features->y_max = 4096;
1333                 } else {
1334                         features->device_type = BTN_TOOL_PEN;
1335                 }
1336         }
1337
1338         /*
1339          * Same thing for Bamboo 3rd gen.
1340          */
1341         if ((features->type == BAMBOO_PT) &&
1342             (features->pktlen == WACOM_PKGLEN_BBTOUCH3) &&
1343             (features->device_type == BTN_TOOL_PEN)) {
1344                 features->device_type = BTN_TOOL_FINGER;
1345
1346                 features->x_max = 4096;
1347                 features->y_max = 4096;
1348         }
1349
1350         if (hdev->bus == BUS_BLUETOOTH)
1351                 features->quirks |= WACOM_QUIRK_BATTERY;
1352
1353         wacom_setup_device_quirks(features);
1354
1355         /* set unit to "100th of a mm" for devices not reported by HID */
1356         if (!features->unit) {
1357                 features->unit = 0x11;
1358                 features->unitExpo = -3;
1359         }
1360         wacom_calculate_res(features);
1361
1362         strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
1363         snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1364                 "%s Pad", features->name);
1365
1366         if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
1367                 /* Append the device type to the name */
1368                 if (features->device_type != BTN_TOOL_FINGER)
1369                         strlcat(wacom_wac->name, " Pen", WACOM_NAME_MAX);
1370                 else if (features->touch_max)
1371                         strlcat(wacom_wac->name, " Finger", WACOM_NAME_MAX);
1372                 else
1373                         strlcat(wacom_wac->name, " Pad", WACOM_NAME_MAX);
1374
1375                 error = wacom_add_shared_data(hdev);
1376                 if (error)
1377                         goto fail1;
1378         }
1379
1380         if (!(features->quirks & WACOM_QUIRK_MONITOR) &&
1381              (features->quirks & WACOM_QUIRK_BATTERY)) {
1382                 error = wacom_initialize_battery(wacom);
1383                 if (error)
1384                         goto fail2;
1385         }
1386
1387         if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1388                 error = wacom_register_inputs(wacom);
1389                 if (error)
1390                         goto fail3;
1391         }
1392
1393         if (hdev->bus == BUS_BLUETOOTH) {
1394                 error = device_create_file(&hdev->dev, &dev_attr_speed);
1395                 if (error)
1396                         hid_warn(hdev,
1397                                  "can't create sysfs speed attribute err: %d\n",
1398                                  error);
1399         }
1400
1401         /* Note that if query fails it is not a hard failure */
1402         wacom_query_tablet_data(hdev, features);
1403
1404         /* Regular HID work starts now */
1405         error = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1406         if (error) {
1407                 hid_err(hdev, "hw start failed\n");
1408                 goto fail4;
1409         }
1410
1411         if (features->quirks & WACOM_QUIRK_MONITOR)
1412                 error = hid_hw_open(hdev);
1413
1414         if (wacom_wac->features.type == INTUOSHT && wacom_wac->features.touch_max) {
1415                 if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
1416                         wacom_wac->shared->touch_input = wacom_wac->input;
1417         }
1418
1419         return 0;
1420
1421  fail4: if (hdev->bus == BUS_BLUETOOTH)
1422                 device_remove_file(&hdev->dev, &dev_attr_speed);
1423         wacom_unregister_inputs(wacom);
1424  fail3: wacom_destroy_battery(wacom);
1425  fail2: wacom_remove_shared_data(wacom_wac);
1426  fail1: kfree(wacom);
1427         hid_set_drvdata(hdev, NULL);
1428         return error;
1429 }
1430
1431 static void wacom_remove(struct hid_device *hdev)
1432 {
1433         struct wacom *wacom = hid_get_drvdata(hdev);
1434
1435         hid_hw_stop(hdev);
1436
1437         cancel_work_sync(&wacom->work);
1438         wacom_unregister_inputs(wacom);
1439         if (hdev->bus == BUS_BLUETOOTH)
1440                 device_remove_file(&hdev->dev, &dev_attr_speed);
1441         wacom_destroy_battery(wacom);
1442         wacom_remove_shared_data(&wacom->wacom_wac);
1443
1444         hid_set_drvdata(hdev, NULL);
1445         kfree(wacom);
1446 }
1447
1448 #ifdef CONFIG_PM
1449 static int wacom_resume(struct hid_device *hdev)
1450 {
1451         struct wacom *wacom = hid_get_drvdata(hdev);
1452         struct wacom_features *features = &wacom->wacom_wac.features;
1453
1454         mutex_lock(&wacom->lock);
1455
1456         /* switch to wacom mode first */
1457         wacom_query_tablet_data(hdev, features);
1458         wacom_led_control(wacom);
1459
1460         mutex_unlock(&wacom->lock);
1461
1462         return 0;
1463 }
1464
1465 static int wacom_reset_resume(struct hid_device *hdev)
1466 {
1467         return wacom_resume(hdev);
1468 }
1469 #endif /* CONFIG_PM */
1470
1471 static struct hid_driver wacom_driver = {
1472         .name =         "wacom",
1473         .id_table =     wacom_ids,
1474         .probe =        wacom_probe,
1475         .remove =       wacom_remove,
1476 #ifdef CONFIG_PM
1477         .resume =       wacom_resume,
1478         .reset_resume = wacom_reset_resume,
1479 #endif
1480         .raw_event =    wacom_raw_event,
1481 };
1482 module_hid_driver(wacom_driver);
1483
1484 MODULE_VERSION(DRIVER_VERSION);
1485 MODULE_AUTHOR(DRIVER_AUTHOR);
1486 MODULE_DESCRIPTION(DRIVER_DESC);
1487 MODULE_LICENSE(DRIVER_LICENSE);