drivers/usb/input/wacom.c

   1 /*
   2  *  USB Wacom Graphire and Wacom Intuos tablet support
   3  *
   4  *  Copyright (c) 2000-2004 Vojtech Pavlik      <vojtech@ucw.cz>
   5  *  Copyright (c) 2000 Andreas Bach Aaen        <abach@stofanet.dk>
   6  *  Copyright (c) 2000 Clifford Wolf            <clifford@clifford.at>
   7  *  Copyright (c) 2000 Sam Mosel                <sam.mosel@computer.org>
   8  *  Copyright (c) 2000 James E. Blair           <corvus@gnu.org>
   9  *  Copyright (c) 2000 Daniel Egger             <egger@suse.de>
  10  *  Copyright (c) 2001 Frederic Lepied          <flepied@mandrakesoft.com>
  11  *  Copyright (c) 2004 Panagiotis Issaris       <panagiotis.issaris@mech.kuleuven.ac.be>
  12  *  Copyright (c) 2002-2005 Ping Cheng          <pingc@wacom.com>
  13  *
  14  *  ChangeLog:
  15  *      v0.1 (vp)  - Initial release
  16  *      v0.2 (aba) - Support for all buttons / combinations
  17  *      v0.3 (vp)  - Support for Intuos added
  18  *      v0.4 (sm)  - Support for more Intuos models, menustrip
  19  *                      relative mode, proximity.
  20  *      v0.5 (vp)  - Big cleanup, nifty features removed,
  21  *                      they belong in userspace
  22  *      v1.8 (vp)  - Submit URB only when operating, moved to CVS,
  23  *                      use input_report_key instead of report_btn and
  24  *                      other cleanups
  25  *      v1.11 (vp) - Add URB ->dev setting for new kernels
  26  *      v1.11 (jb) - Add support for the 4D Mouse & Lens
  27  *      v1.12 (de) - Add support for two more inking pen IDs
  28  *      v1.14 (vp) - Use new USB device id probing scheme.
  29  *                   Fix Wacom Graphire mouse wheel
  30  *      v1.18 (vp) - Fix mouse wheel direction
  31  *                   Make mouse relative
  32  *      v1.20 (fl) - Report tool id for Intuos devices
  33  *                 - Multi tools support
  34  *                 - Corrected Intuos protocol decoding (airbrush, 4D mouse, lens cursor...)
  35  *                 - Add PL models support
  36  *                 - Fix Wacom Graphire mouse wheel again
  37  *      v1.21 (vp) - Removed protocol descriptions
  38  *                 - Added MISC_SERIAL for tool serial numbers
  39  *            (gb) - Identify version on module load.
  40  *    v1.21.1 (fl) - added Graphire2 support
  41  *    v1.21.2 (fl) - added Intuos2 support
  42  *                 - added all the PL ids
  43  *    v1.21.3 (fl) - added another eraser id from Neil Okamoto
  44  *                 - added smooth filter for Graphire from Peri Hankey
  45  *                 - added PenPartner support from Olaf van Es
  46  *                 - new tool ids from Ole Martin Bjoerndalen
  47  *      v1.29 (pc) - Add support for more tablets
  48  *                 - Fix pressure reporting
  49  *      v1.30 (vp) - Merge 2.4 and 2.5 drivers
  50  *                 - Since 2.5 now has input_sync(), remove MSC_SERIAL abuse
  51  *                 - Cleanups here and there
  52  *    v1.30.1 (pi) - Added Graphire3 support
  53  *      v1.40 (pc) - Add support for several new devices, fix eraser reporting, ...
  54  *      v1.43 (pc) - Added support for Cintiq 21UX
  55  *                 - Fixed a Graphire bug
  56  *                 - Merged wacom_intuos3_irq into wacom_intuos_irq
  57  *      v1.44 (pc) - Added support for Graphire4, Cintiq 710, Intuos3 6x11, etc.
  58  *                 - Report Device IDs
  59  */
  60
  61 /*
  62  * This program is free software; you can redistribute it and/or modify
  63  * it under the terms of the GNU General Public License as published by
  64  * the Free Software Foundation; either version 2 of the License, or
  65  * (at your option) any later version.
  66  */
  67
  68 #include <linux/kernel.h>
  69 #include <linux/slab.h>
  70 #include <linux/input.h>
  71 #include <linux/module.h>
  72 #include <linux/init.h>
  73 #include <linux/usb.h>
  74 #include <linux/usb_input.h>
  75 #include <asm/unaligned.h>
  76 #include <asm/byteorder.h>
  77
  78 /*
  79  * Version Information
  80  */
  81 #define DRIVER_VERSION "v1.44"
  82 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
  83 #define DRIVER_DESC "USB Wacom Graphire and Wacom Intuos tablet driver"
  84 #define DRIVER_LICENSE "GPL"
  85
  86 MODULE_AUTHOR(DRIVER_AUTHOR);
  87 MODULE_DESCRIPTION(DRIVER_DESC);
  88 MODULE_LICENSE(DRIVER_LICENSE);
  89
  90 #define USB_VENDOR_ID_WACOM     0x056a
  91 #define STYLUS_DEVICE_ID        0x02
  92 #define CURSOR_DEVICE_ID        0x06
  93 #define ERASER_DEVICE_ID        0x0A
  94
  95 enum {
  96         PENPARTNER = 0,
  97         GRAPHIRE,
  98         WACOM_G4,
  99         PL,
 100         INTUOS,
 101         INTUOS3,
 102         CINTIQ,
 103         MAX_TYPE
 104 };
 105
 106 struct wacom_features {
 107         char *name;
 108         int pktlen;
 109         int x_max;
 110         int y_max;
 111         int pressure_max;
 112         int distance_max;
 113         int type;
 114         usb_complete_t irq;
 115 };
 116
 117 struct wacom {
 118         signed char *data;
 119         dma_addr_t data_dma;
 120         struct input_dev *dev;
 121         struct usb_device *usbdev;
 122         struct urb *irq;
 123         struct wacom_features *features;
 124         int tool[2];
 125         int id[2];
 126         __u32 serial[2];
 127         char phys[32];
 128 };
 129
 130 #define USB_REQ_SET_REPORT      0x09
 131 static int usb_set_report(struct usb_interface *intf, unsigned char type,
 132                                 unsigned char id, void *buf, int size)
 133 {
 134         return usb_control_msg(interface_to_usbdev(intf),
 135                 usb_sndctrlpipe(interface_to_usbdev(intf), 0),
 136                 USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 137                 (type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
 138                 buf, size, 1000);
 139 }
 140
 141 static void wacom_pl_irq(struct urb *urb, struct pt_regs *regs)
 142 {
 143         struct wacom *wacom = urb->context;
 144         unsigned char *data = wacom->data;
 145         struct input_dev *dev = wacom->dev;
 146         int prox, pressure, id;
 147         int retval;
 148
 149         switch (urb->status) {
 150         case 0:
 151                 /* success */
 152                 break;
 153         case -ECONNRESET:
 154         case -ENOENT:
 155         case -ESHUTDOWN:
 156                 /* this urb is terminated, clean up */
 157                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
 158                 return;
 159         default:
 160                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
 161                 goto exit;
 162         }
 163
 164         if (data[0] != 2) {
 165                 dbg("wacom_pl_irq: received unknown report #%d", data[0]);
 166                 goto exit;
 167         }
 168
 169         prox = data[1] & 0x40;
 170
 171         input_regs(dev, regs);
 172
 173         id = ERASER_DEVICE_ID;
 174         if (prox) {
 175
 176                 pressure = (signed char)((data[7] << 1) | ((data[4] >> 2) & 1));
 177                 if (wacom->features->pressure_max > 255)
 178                         pressure = (pressure << 1) | ((data[4] >> 6) & 1);
 179                 pressure += (wacom->features->pressure_max + 1) / 2;
 180
 181                 /*
 182                  * if going from out of proximity into proximity select between the eraser
 183                  * and the pen based on the state of the stylus2 button, choose eraser if
 184                  * pressed else choose pen. if not a proximity change from out to in, send
 185                  * an out of proximity for previous tool then a in for new tool.
 186                  */
 187                 if (!wacom->tool[0]) {
 188                         /* Eraser bit set for DTF */
 189                         if (data[1] & 0x10)
 190                                 wacom->tool[1] = BTN_TOOL_RUBBER;
 191                         else
 192                                 /* Going into proximity select tool */
 193                                 wacom->tool[1] = (data[4] & 0x20) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
 194                 } else {
 195                         /* was entered with stylus2 pressed */
 196                         if (wacom->tool[1] == BTN_TOOL_RUBBER && !(data[4] & 0x20)) {
 197                                 /* report out proximity for previous tool */
 198                                 input_report_key(dev, wacom->tool[1], 0);
 199                                 input_sync(dev);
 200                                 wacom->tool[1] = BTN_TOOL_PEN;
 201                                 goto exit;
 202                         }
 203                 }
 204                 if (wacom->tool[1] != BTN_TOOL_RUBBER) {
 205                         /* Unknown tool selected default to pen tool */
 206                         wacom->tool[1] = BTN_TOOL_PEN;
 207                         id = STYLUS_DEVICE_ID;
 208                 }
 209                 input_report_key(dev, wacom->tool[1], id); /* report in proximity for tool */
 210                 input_report_abs(dev, ABS_X, data[3] | (data[2] << 7) | ((data[1] & 0x03) << 14));
 211                 input_report_abs(dev, ABS_Y, data[6] | (data[5] << 7) | ((data[4] & 0x03) << 14));
 212                 input_report_abs(dev, ABS_PRESSURE, pressure);
 213
 214                 input_report_key(dev, BTN_TOUCH, data[4] & 0x08);
 215                 input_report_key(dev, BTN_STYLUS, data[4] & 0x10);
 216                 /* Only allow the stylus2 button to be reported for the pen tool. */
 217                 input_report_key(dev, BTN_STYLUS2, (wacom->tool[1] == BTN_TOOL_PEN) && (data[4] & 0x20));
 218         } else {
 219                 /* report proximity-out of a (valid) tool */
 220                 if (wacom->tool[1] != BTN_TOOL_RUBBER) {
 221                         /* Unknown tool selected default to pen tool */
 222                         wacom->tool[1] = BTN_TOOL_PEN;
 223                 }
 224                 input_report_key(dev, wacom->tool[1], prox);
 225         }
 226
 227         wacom->tool[0] = prox; /* Save proximity state */
 228         input_sync(dev);
 229
 230  exit:
 231         retval = usb_submit_urb (urb, GFP_ATOMIC);
 232         if (retval)
 233                 err ("%s - usb_submit_urb failed with result %d",
 234                      __FUNCTION__, retval);
 235 }
 236
 237 static void wacom_ptu_irq(struct urb *urb, struct pt_regs *regs)
 238 {
 239         struct wacom *wacom = urb->context;
 240         unsigned char *data = wacom->data;
 241         struct input_dev *dev = wacom->dev;
 242         int retval;
 243
 244         switch (urb->status) {
 245         case 0:
 246                 /* success */
 247                 break;
 248         case -ECONNRESET:
 249         case -ENOENT:
 250         case -ESHUTDOWN:
 251                 /* this urb is terminated, clean up */
 252                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
 253                 return;
 254         default:
 255                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
 256                 goto exit;
 257         }
 258
 259         if (data[0] != 2) {
 260                 printk(KERN_INFO "wacom_ptu_irq: received unknown report #%d\n", data[0]);
 261                 goto exit;
 262         }
 263
 264         input_regs(dev, regs);
 265         if (data[1] & 0x04) {
 266                 input_report_key(dev, BTN_TOOL_RUBBER, (data[1] & 0x20) ? ERASER_DEVICE_ID : 0);
 267                 input_report_key(dev, BTN_TOUCH, data[1] & 0x08);
 268         } else {
 269                 input_report_key(dev, BTN_TOOL_PEN, (data[1] & 0x20) ? STYLUS_DEVICE_ID : 0);
 270                 input_report_key(dev, BTN_TOUCH, data[1] & 0x01);
 271         }
 272         input_report_abs(dev, ABS_X, le16_to_cpu(*(__le16 *) &data[2]));
 273         input_report_abs(dev, ABS_Y, le16_to_cpu(*(__le16 *) &data[4]));
 274         input_report_abs(dev, ABS_PRESSURE, le16_to_cpu(*(__le16 *) &data[6]));
 275         input_report_key(dev, BTN_STYLUS, data[1] & 0x02);
 276         input_report_key(dev, BTN_STYLUS2, data[1] & 0x10);
 277
 278         input_sync(dev);
 279
 280  exit:
 281         retval = usb_submit_urb (urb, GFP_ATOMIC);
 282         if (retval)
 283                 err ("%s - usb_submit_urb failed with result %d",
 284                      __FUNCTION__, retval);
 285 }
 286
 287 static void wacom_penpartner_irq(struct urb *urb, struct pt_regs *regs)
 288 {
 289         struct wacom *wacom = urb->context;
 290         unsigned char *data = wacom->data;
 291         struct input_dev *dev = wacom->dev;
 292         int retval;
 293
 294         switch (urb->status) {
 295         case 0:
 296                 /* success */
 297                 break;
 298         case -ECONNRESET:
 299         case -ENOENT:
 300         case -ESHUTDOWN:
 301                 /* this urb is terminated, clean up */
 302                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
 303                 return;
 304         default:
 305                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
 306                 goto exit;
 307         }
 308
 309         if (data[0] != 2) {
 310                 printk(KERN_INFO "wacom_penpartner_irq: received unknown report #%d\n", data[0]);
 311                 goto exit;
 312         }
 313
 314         input_regs(dev, regs);
 315         input_report_key(dev, BTN_TOOL_PEN, STYLUS_DEVICE_ID);
 316         input_report_abs(dev, ABS_X, le16_to_cpu(*(__le16 *) &data[1]));
 317         input_report_abs(dev, ABS_Y, le16_to_cpu(*(__le16 *) &data[3]));
 318         input_report_abs(dev, ABS_PRESSURE, (signed char)data[6] + 127);
 319         input_report_key(dev, BTN_TOUCH, ((signed char)data[6] > -80) && !(data[5] & 0x20));
 320         input_report_key(dev, BTN_STYLUS, (data[5] & 0x40));
 321         input_sync(dev);
 322
 323  exit:
 324         retval = usb_submit_urb (urb, GFP_ATOMIC);
 325         if (retval)
 326                 err ("%s - usb_submit_urb failed with result %d",
 327                      __FUNCTION__, retval);
 328 }
 329
 330 static void wacom_graphire_irq(struct urb *urb, struct pt_regs *regs)
 331 {
 332         struct wacom *wacom = urb->context;
 333         unsigned char *data = wacom->data;
 334         struct input_dev *dev = wacom->dev;
 335         int x, y, id, rw;
 336         int retval;
 337
 338         switch (urb->status) {
 339         case 0:
 340                 /* success */
 341                 break;
 342         case -ECONNRESET:
 343         case -ENOENT:
 344         case -ESHUTDOWN:
 345                 /* this urb is terminated, clean up */
 346                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
 347                 return;
 348         default:
 349                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
 350                 goto exit;
 351         }
 352
 353         if (data[0] != 2) {
 354                 dbg("wacom_graphire_irq: received unknown report #%d", data[0]);
 355                 goto exit;
 356         }
 357
 358         input_regs(dev, regs);
 359
 360         id = STYLUS_DEVICE_ID;
 361         if (data[1] & 0x10) { /* in prox */
 362
 363                 switch ((data[1] >> 5) & 3) {
 364
 365                         case 0: /* Pen */
 366                                 wacom->tool[0] = BTN_TOOL_PEN;
 367                                 break;
 368
 369                         case 1: /* Rubber */
 370                                 wacom->tool[0] = BTN_TOOL_RUBBER;
 371                                 id = ERASER_DEVICE_ID;
 372                                 break;
 373
 374                         case 2: /* Mouse with wheel */
 375                                 input_report_key(dev, BTN_MIDDLE, data[1] & 0x04);
 376                                 if (wacom->features->type == WACOM_G4) {
 377                                         rw = data[7] & 0x04 ? -(data[7] & 0x03) : (data[7] & 0x03);
 378                                         input_report_rel(dev, REL_WHEEL, rw);
 379                                 } else
 380                                         input_report_rel(dev, REL_WHEEL, (signed char) data[6]);
 381                                 /* fall through */
 382
 383                         case 3: /* Mouse without wheel */
 384                                 wacom->tool[0] = BTN_TOOL_MOUSE;
 385                                 id = CURSOR_DEVICE_ID;
 386                                 input_report_key(dev, BTN_LEFT, data[1] & 0x01);
 387                                 input_report_key(dev, BTN_RIGHT, data[1] & 0x02);
 388                                 if (wacom->features->type == WACOM_G4)
 389                                         input_report_abs(dev, ABS_DISTANCE, data[6]);
 390                                 else
 391                                         input_report_abs(dev, ABS_DISTANCE, data[7]);
 392                                 break;
 393                 }
 394         }
 395
 396         if (data[1] & 0x90) {
 397                 x = le16_to_cpu(*(__le16 *) &data[2]);
 398                 y = le16_to_cpu(*(__le16 *) &data[4]);
 399                 input_report_abs(dev, ABS_X, x);
 400                 input_report_abs(dev, ABS_Y, y);
 401                 if (wacom->tool[0] != BTN_TOOL_MOUSE) {
 402                         input_report_abs(dev, ABS_PRESSURE, data[6] | ((data[7] & 0x01) << 8));
 403                         input_report_key(dev, BTN_TOUCH, data[1] & 0x01);
 404                         input_report_key(dev, BTN_STYLUS, data[1] & 0x02);
 405                         input_report_key(dev, BTN_STYLUS2, data[1] & 0x04);
 406                 }
 407         }
 408
 409         input_report_key(dev, wacom->tool[0], (data[1] & 0x10) ? id : 0);
 410         input_sync(dev);
 411
 412         /* send pad data */
 413         if (wacom->features->type == WACOM_G4) {
 414                 /* fist time sending pad data */
 415                 if (wacom->tool[1] != BTN_TOOL_FINGER) {
 416                         wacom->id[1] = 0;
 417                         wacom->serial[1] = (data[7] & 0x38) >> 2;
 418                 }
 419                 if (data[7] & 0xf8) {
 420                         input_report_key(dev, BTN_0, (data[7] & 0x40));
 421                         input_report_key(dev, BTN_4, (data[7] & 0x80));
 422                         if (((data[7] & 0x38) >> 2) == (wacom->serial[1] & 0x0e))
 423                                 /* alter REL_WHEEL value so X apps can get it */
 424                                 wacom->serial[1] += (wacom->serial[1] & 0x01) ? -1 : 1;
 425                         else
 426                                  wacom->serial[1] = (data[7] & 0x38 ) >> 2;
 427
 428                         /* don't alter the value when there is no wheel event */
 429                         if (wacom->serial[1] == 1)
 430                                 wacom->serial[1] = 0;
 431                         rw = wacom->serial[1];
 432                         rw = (rw & 0x08) ? -(rw & 0x07) : (rw & 0x07);
 433                         input_report_rel(dev, REL_WHEEL, rw);
 434                         wacom->tool[1] = BTN_TOOL_FINGER;
 435                         wacom->id[1] = data[7] & 0xf8;
 436                         input_report_key(dev, wacom->tool[1], 0xf0);
 437                         input_event(dev, EV_MSC, MSC_SERIAL, 0xf0);
 438                 } else if (wacom->id[1]) {
 439                         wacom->id[1] = 0;
 440                         wacom->serial[1] = 0;
 441                         input_report_key(dev, wacom->tool[1], 0);
 442                         input_event(dev, EV_MSC, MSC_SERIAL, 0xf0);
 443                 }
 444                 input_sync(dev);
 445         }
 446  exit:
 447         retval = usb_submit_urb (urb, GFP_ATOMIC);
 448         if (retval)
 449                 err ("%s - usb_submit_urb failed with result %d",
 450                      __FUNCTION__, retval);
 451 }
 452
 453 static int wacom_intuos_inout(struct urb *urb)
 454 {
 455         struct wacom *wacom = urb->context;
 456         unsigned char *data = wacom->data;
 457         struct input_dev *dev = wacom->dev;
 458         int idx;
 459
 460         /* tool number */
 461         idx = data[1] & 0x01;
 462
 463         /* Enter report */
 464         if ((data[1] & 0xfc) == 0xc0) {
 465                 /* serial number of the tool */
 466                 wacom->serial[idx] = ((data[3] & 0x0f) << 28) +
 467                         (data[4] << 20) + (data[5] << 12) +
 468                         (data[6] << 4) + (data[7] >> 4);
 469
 470                 wacom->id[idx] = (data[2] << 4) | (data[3] >> 4);
 471                 switch (wacom->id[idx]) {
 472                         case 0x812: /* Inking pen */
 473                         case 0x801: /* Intuos3 Inking pen */
 474                         case 0x012:
 475                                 wacom->tool[idx] = BTN_TOOL_PENCIL;
 476                                 break;
 477                         case 0x822: /* Pen */
 478                         case 0x842:
 479                         case 0x852:
 480                         case 0x823: /* Intuos3 Grip Pen */
 481                         case 0x813: /* Intuos3 Classic Pen */
 482                         case 0x885: /* Intuos3 Marker Pen */
 483                         case 0x022:
 484                                 wacom->tool[idx] = BTN_TOOL_PEN;
 485                                 break;
 486                         case 0x832: /* Stroke pen */
 487                         case 0x032:
 488                                 wacom->tool[idx] = BTN_TOOL_BRUSH;
 489                                 break;
 490                         case 0x007: /* Mouse 4D and 2D */
 491                         case 0x09c:
 492                         case 0x094:
 493                         case 0x017: /* Intuos3 2D Mouse */
 494                                 wacom->tool[idx] = BTN_TOOL_MOUSE;
 495                                 break;
 496                         case 0x096: /* Lens cursor */
 497                         case 0x097: /* Intuos3 Lens cursor */
 498                                 wacom->tool[idx] = BTN_TOOL_LENS;
 499                                 break;
 500                         case 0x82a: /* Eraser */
 501                         case 0x85a:
 502                         case 0x91a:
 503                         case 0xd1a:
 504                         case 0x0fa:
 505                         case 0x82b: /* Intuos3 Grip Pen Eraser */
 506                         case 0x81b: /* Intuos3 Classic Pen Eraser */
 507                         case 0x91b: /* Intuos3 Airbrush Eraser */
 508                                 wacom->tool[idx] = BTN_TOOL_RUBBER;
 509                                 break;
 510                         case 0xd12:
 511                         case 0x912:
 512                         case 0x112:
 513                         case 0x913: /* Intuos3 Airbrush */
 514                                 wacom->tool[idx] = BTN_TOOL_AIRBRUSH;
 515                                 break;
 516                         default: /* Unknown tool */
 517                                 wacom->tool[idx] = BTN_TOOL_PEN;
 518                 }
 519                 input_report_key(dev, wacom->tool[idx], wacom->id[idx]);
 520                 input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
 521                 input_sync(dev);
 522                 return 1;
 523         }
 524
 525         /* Exit report */
 526         if ((data[1] & 0xfe) == 0x80) {
 527                 input_report_key(dev, wacom->tool[idx], 0);
 528                 input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
 529                 input_sync(dev);
 530                 return 1;
 531         }
 532
 533         return 0;
 534 }
 535
 536 static void wacom_intuos_general(struct urb *urb)
 537 {
 538         struct wacom *wacom = urb->context;
 539         unsigned char *data = wacom->data;
 540         struct input_dev *dev = wacom->dev;
 541         unsigned int t;
 542
 543         /* general pen packet */
 544         if ((data[1] & 0xb8) == 0xa0) {
 545                 t = (data[6] << 2) | ((data[7] >> 6) & 3);
 546                 input_report_abs(dev, ABS_PRESSURE, t);
 547                 input_report_abs(dev, ABS_TILT_X,
 548                                 ((data[7] << 1) & 0x7e) | (data[8] >> 7));
 549                 input_report_abs(dev, ABS_TILT_Y, data[8] & 0x7f);
 550                 input_report_key(dev, BTN_STYLUS, data[1] & 2);
 551                 input_report_key(dev, BTN_STYLUS2, data[1] & 4);
 552                 input_report_key(dev, BTN_TOUCH, t > 10);
 553         }
 554
 555         /* airbrush second packet */
 556         if ((data[1] & 0xbc) == 0xb4) {
 557                 input_report_abs(dev, ABS_WHEEL,
 558                                 (data[6] << 2) | ((data[7] >> 6) & 3));
 559                 input_report_abs(dev, ABS_TILT_X,
 560                                 ((data[7] << 1) & 0x7e) | (data[8] >> 7));
 561                 input_report_abs(dev, ABS_TILT_Y, data[8] & 0x7f);
 562         }
 563         return;
 564 }
 565
 566 static void wacom_intuos_irq(struct urb *urb, struct pt_regs *regs)
 567 {
 568         struct wacom *wacom = urb->context;
 569         unsigned char *data = wacom->data;
 570         struct input_dev *dev = wacom->dev;
 571         unsigned int t;
 572         int idx;
 573         int retval;
 574
 575         switch (urb->status) {
 576         case 0:
 577                 /* success */
 578                 break;
 579         case -ECONNRESET:
 580         case -ENOENT:
 581         case -ESHUTDOWN:
 582                 /* this urb is terminated, clean up */
 583                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
 584                 return;
 585         default:
 586                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
 587                 goto exit;
 588         }
 589
 590         if (data[0] != 2 && data[0] != 5 && data[0] != 6 && data[0] != 12) {
 591                 dbg("wacom_intuos_irq: received unknown report #%d", data[0]);
 592                 goto exit;
 593         }
 594
 595         input_regs(dev, regs);
 596
 597         /* tool number */
 598         idx = data[1] & 0x01;
 599
 600         /* pad packets. Works as a second tool and is always in prox */
 601         if (data[0] == 12) {
 602                 /* initiate the pad as a device */
 603                 if (wacom->tool[1] != BTN_TOOL_FINGER) {
 604                         wacom->tool[1] = BTN_TOOL_FINGER;
 605                         input_report_key(dev, wacom->tool[1], 1);
 606                 }
 607                 input_report_key(dev, BTN_0, (data[5] & 0x01));
 608                 input_report_key(dev, BTN_1, (data[5] & 0x02));
 609                 input_report_key(dev, BTN_2, (data[5] & 0x04));
 610                 input_report_key(dev, BTN_3, (data[5] & 0x08));
 611                 input_report_key(dev, BTN_4, (data[6] & 0x01));
 612                 input_report_key(dev, BTN_5, (data[6] & 0x02));
 613                 input_report_key(dev, BTN_6, (data[6] & 0x04));
 614                 input_report_key(dev, BTN_7, (data[6] & 0x08));
 615                 input_report_abs(dev, ABS_RX, ((data[1] & 0x1f) << 8) | data[2]);
 616                 input_report_abs(dev, ABS_RY, ((data[3] & 0x1f) << 8) | data[4]);
 617                 input_event(dev, EV_MSC, MSC_SERIAL, 0xffffffff);
 618                 input_sync(dev);
 619                 goto exit;
 620         }
 621
 622         /* process in/out prox events */
 623         if (wacom_intuos_inout(urb))
 624                 goto exit;
 625
 626         /* Cintiq doesn't send data when RDY bit isn't set */
 627         if ((wacom->features->type == CINTIQ) && !(data[1] & 0x40))
 628                 goto exit;
 629
 630         if (wacom->features->type >= INTUOS3) {
 631                 input_report_abs(dev, ABS_X, (data[2] << 9) | (data[3] << 1) | ((data[9] >> 1) & 1));
 632                 input_report_abs(dev, ABS_Y, (data[4] << 9) | (data[5] << 1) | (data[9] & 1));
 633                 input_report_abs(dev, ABS_DISTANCE, ((data[9] >> 2) & 0x3f));
 634         } else {
 635                 input_report_abs(dev, ABS_X, be16_to_cpu(*(__be16 *) &data[2]));
 636                 input_report_abs(dev, ABS_Y, be16_to_cpu(*(__be16 *) &data[4]));
 637                 input_report_abs(dev, ABS_DISTANCE, ((data[9] >> 3) & 0x1f));
 638         }
 639
 640         /* process general packets */
 641         wacom_intuos_general(urb);
 642
 643         /* 4D mouse, 2D mouse, marker pen rotation, or Lens cursor packets */
 644         if ((data[1] & 0xbc) == 0xa8 || (data[1] & 0xbe) == 0xb0) {
 645
 646                 if (data[1] & 0x02) {
 647                         /* Rotation packet */
 648                         if (wacom->features->type >= INTUOS3) {
 649                                 /* I3 marker pen rotation reported as wheel
 650                                  * due to valuator limitation
 651                                  */
 652                                 t = (data[6] << 3) | ((data[7] >> 5) & 7);
 653                                 t = (data[7] & 0x20) ? ((t > 900) ? ((t-1) / 2 - 1350) :
 654                                         ((t-1) / 2 + 450)) : (450 - t / 2) ;
 655                                 input_report_abs(dev, ABS_WHEEL, t);
 656                         } else {
 657                                 /* 4D mouse rotation packet */
 658                                 t = (data[6] << 3) | ((data[7] >> 5) & 7);
 659                                 input_report_abs(dev, ABS_RZ, (data[7] & 0x20) ?
 660                                         ((t - 1) / 2) : -t / 2);
 661                         }
 662
 663                 } else if (!(data[1] & 0x10) && wacom->features->type < INTUOS3) {
 664                         /* 4D mouse packet */
 665                         input_report_key(dev, BTN_LEFT,   data[8] & 0x01);
 666                         input_report_key(dev, BTN_MIDDLE, data[8] & 0x02);
 667                         input_report_key(dev, BTN_RIGHT,  data[8] & 0x04);
 668
 669                         input_report_key(dev, BTN_SIDE,   data[8] & 0x20);
 670                         input_report_key(dev, BTN_EXTRA,  data[8] & 0x10);
 671                         t = (data[6] << 2) | ((data[7] >> 6) & 3);
 672                         input_report_abs(dev, ABS_THROTTLE, (data[8] & 0x08) ? -t : t);
 673
 674                 } else if (wacom->tool[idx] == BTN_TOOL_MOUSE) {
 675                         /* 2D mouse packet */
 676                         input_report_key(dev, BTN_LEFT,   data[8] & 0x04);
 677                         input_report_key(dev, BTN_MIDDLE, data[8] & 0x08);
 678                         input_report_key(dev, BTN_RIGHT,  data[8] & 0x10);
 679                         input_report_rel(dev, REL_WHEEL, ((data[8] & 0x02) >> 1)
 680                                                  - (data[8] & 0x01));
 681
 682                         /* I3 2D mouse side buttons */
 683                         if (wacom->features->type == INTUOS3) {
 684                                 input_report_key(dev, BTN_SIDE,   data[8] & 0x40);
 685                                 input_report_key(dev, BTN_EXTRA,  data[8] & 0x20);
 686                         }
 687
 688                 } else if (wacom->features->type < INTUOS3) {
 689                         /* Lens cursor packets */
 690                         input_report_key(dev, BTN_LEFT,   data[8] & 0x01);
 691                         input_report_key(dev, BTN_MIDDLE, data[8] & 0x02);
 692                         input_report_key(dev, BTN_RIGHT,  data[8] & 0x04);
 693                         input_report_key(dev, BTN_SIDE,   data[8] & 0x10);
 694                         input_report_key(dev, BTN_EXTRA,  data[8] & 0x08);
 695                 }
 696         }
 697
 698         input_report_key(dev, wacom->tool[idx], wacom->id[idx]);
 699         input_event(dev, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
 700         input_sync(dev);
 701
 702 exit:
 703         retval = usb_submit_urb (urb, GFP_ATOMIC);
 704         if (retval)
 705                 err ("%s - usb_submit_urb failed with result %d",
 706                     __FUNCTION__, retval);
 707 }
 708
 709 static struct wacom_features wacom_features[] = {
 710         { "Wacom Penpartner",    7,   5040,  3780,  255, 32, PENPARTNER, wacom_penpartner_irq },
 711         { "Wacom Graphire",      8,  10206,  7422,  511, 32, GRAPHIRE,   wacom_graphire_irq },
 712         { "Wacom Graphire2 4x5", 8,  10206,  7422,  511, 32, GRAPHIRE,   wacom_graphire_irq },
 713         { "Wacom Graphire2 5x7", 8,  13918, 10206,  511, 32, GRAPHIRE,   wacom_graphire_irq },
 714         { "Wacom Graphire3",     8,  10208,  7424,  511, 32, GRAPHIRE,   wacom_graphire_irq },
 715         { "Wacom Graphire3 6x8", 8,  16704, 12064,  511, 32, GRAPHIRE,   wacom_graphire_irq },
 716         { "Wacom Graphire4 4x5", 8,  10208,  7424,  511, 32, WACOM_G4,   wacom_graphire_irq },
 717         { "Wacom Graphire4 6x8", 8,  16704, 12064,  511, 32, WACOM_G4,   wacom_graphire_irq },
 718         { "Wacom Volito",        8,   5104,  3712,  511, 32, GRAPHIRE,   wacom_graphire_irq },
 719         { "Wacom PenStation2",   8,   3250,  2320,  255, 32, GRAPHIRE,   wacom_graphire_irq },
 720         { "Wacom Volito2 4x5",   8,   5104,  3712,  511, 32, GRAPHIRE,   wacom_graphire_irq },
 721         { "Wacom Volito2 2x3",   8,   3248,  2320,  511, 32, GRAPHIRE,   wacom_graphire_irq },
 722         { "Wacom PenPartner2",   8,   3250,  2320,  255, 32, GRAPHIRE,   wacom_graphire_irq },
 723         { "Wacom Intuos 4x5",   10,  12700, 10600, 1023, 15, INTUOS,     wacom_intuos_irq },
 724         { "Wacom Intuos 6x8",   10,  20320, 16240, 1023, 15, INTUOS,     wacom_intuos_irq },
 725         { "Wacom Intuos 9x12",  10,  30480, 24060, 1023, 15, INTUOS,     wacom_intuos_irq },
 726         { "Wacom Intuos 12x12", 10,  30480, 31680, 1023, 15, INTUOS,     wacom_intuos_irq },
 727         { "Wacom Intuos 12x18", 10,  45720, 31680, 1023, 15, INTUOS,     wacom_intuos_irq },
 728         { "Wacom PL400",         8,   5408,  4056,  255, 32, PL,         wacom_pl_irq },
 729         { "Wacom PL500",         8,   6144,  4608,  255, 32, PL,         wacom_pl_irq },
 730         { "Wacom PL600",         8,   6126,  4604,  255, 32, PL,         wacom_pl_irq },
 731         { "Wacom PL600SX",       8,   6260,  5016,  255, 32, PL,         wacom_pl_irq },
 732         { "Wacom PL550",         8,   6144,  4608,  511, 32, PL,         wacom_pl_irq },
 733         { "Wacom PL800",         8,   7220,  5780,  511, 32, PL,         wacom_pl_irq },
 734         { "Wacom PL700",         8,   6758,  5406,  511, 32, PL,         wacom_pl_irq },
 735         { "Wacom PL510",         8,   6282,  4762,  511, 32, PL,         wacom_pl_irq },
 736         { "Wacom PL710",         8,  34080, 27660,  511, 32, PL,         wacom_pl_irq },
 737         { "Wacom DTF720",        8,   6858,  5506,  511, 32, PL,         wacom_pl_irq },
 738         { "Wacom Cintiq Partner",8,  20480, 15360,  511, 32, PL,         wacom_ptu_irq },
 739         { "Wacom Intuos2 4x5",   10, 12700, 10600, 1023, 15, INTUOS,     wacom_intuos_irq },
 740         { "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 15, INTUOS,     wacom_intuos_irq },
 741         { "Wacom Intuos2 9x12",  10, 30480, 24060, 1023, 15, INTUOS,     wacom_intuos_irq },
 742         { "Wacom Intuos2 12x12", 10, 30480, 31680, 1023, 15, INTUOS,     wacom_intuos_irq },
 743         { "Wacom Intuos2 12x18", 10, 45720, 31680, 1023, 15, INTUOS,     wacom_intuos_irq },
 744         { "Wacom Intuos3 4x5",   10, 25400, 20320, 1023, 15, INTUOS3,    wacom_intuos_irq },
 745         { "Wacom Intuos3 6x8",   10, 40640, 30480, 1023, 15, INTUOS3,    wacom_intuos_irq },
 746         { "Wacom Intuos3 9x12",  10, 60960, 45720, 1023, 15, INTUOS3,    wacom_intuos_irq },
 747         { "Wacom Intuos3 6x11",  10, 54204, 31750, 1023, 15, INTUOS3,    wacom_intuos_irq },
 748         { "Wacom Cintiq 21UX",   10, 87200, 65600, 1023, 15, CINTIQ,     wacom_intuos_irq },
 749         { "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 15, INTUOS,     wacom_intuos_irq },
 750         { }
 751 };
 752
 753 static struct usb_device_id wacom_ids[] = {
 754         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x00) },
 755         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x10) },
 756         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x11) },
 757         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x12) },
 758         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x13) },
 759         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x14) },
 760         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x15) },
 761         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x16) },
 762         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x60) },
 763         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x61) },
 764         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x62) },
 765         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x63) },
 766         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x64) },
 767         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x20) },
 768         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x21) },
 769         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x22) },
 770         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x23) },
 771         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x24) },
 772         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x30) },
 773         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x31) },
 774         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x32) },
 775         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x33) },
 776         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x34) },
 777         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x35) },
 778         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x37) },
 779         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x38) },
 780         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x39) },
 781         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC0) },
 782         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x03) },
 783         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x41) },
 784         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x42) },
 785         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x43) },
 786         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x44) },
 787         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x45) },
 788         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB0) },
 789         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB1) },
 790         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB2) },
 791         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB5) },
 792         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x3F) },
 793         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x47) },
 794         { }
 795 };
 796
 797 MODULE_DEVICE_TABLE(usb, wacom_ids);
 798
 799 static int wacom_open(struct input_dev *dev)
 800 {
 801         struct wacom *wacom = dev->private;
 802
 803         wacom->irq->dev = wacom->usbdev;
 804         if (usb_submit_urb(wacom->irq, GFP_KERNEL))
 805                 return -EIO;
 806
 807         return 0;
 808 }
 809
 810 static void wacom_close(struct input_dev *dev)
 811 {
 812         struct wacom *wacom = dev->private;
 813
 814         usb_kill_urb(wacom->irq);
 815 }
 816
 817 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
 818 {
 819         struct usb_device *dev = interface_to_usbdev(intf);
 820         struct usb_endpoint_descriptor *endpoint;
 821         struct wacom *wacom;
 822         struct input_dev *input_dev;
 823         char rep_data[2] = {0x02, 0x02};
 824
 825         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
 826         input_dev = input_allocate_device();
 827         if (!wacom || !input_dev)
 828                 goto fail1;
 829
 830         wacom->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
 831         if (!wacom->data)
 832                 goto fail1;
 833
 834         wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
 835         if (!wacom->irq)
 836                 goto fail2;
 837
 838         wacom->usbdev = dev;
 839         wacom->dev = input_dev;
 840         usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
 841         strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
 842
 843         wacom->features = wacom_features + (id - wacom_ids);
 844         if (wacom->features->pktlen > 10)
 845                 BUG();
 846
 847         input_dev->name = wacom->features->name;
 848         usb_to_input_id(dev, &input_dev->id);
 849
 850         input_dev->cdev.dev = &intf->dev;
 851         input_dev->private = wacom;
 852         input_dev->open = wacom_open;
 853         input_dev->close = wacom_close;
 854
 855         input_dev->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS);
 856         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOUCH) | BIT(BTN_STYLUS);
 857         input_set_abs_params(input_dev, ABS_X, 0, wacom->features->x_max, 4, 0);
 858         input_set_abs_params(input_dev, ABS_Y, 0, wacom->features->y_max, 4, 0);
 859         input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom->features->pressure_max, 0, 0);
 860
 861         switch (wacom->features->type) {
 862                 case WACOM_G4:
 863                         input_dev->evbit[0] |= BIT(EV_MSC);
 864                         input_dev->mscbit[0] |= BIT(MSC_SERIAL);
 865                         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
 866                         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
 867                         /* fall through */
 868
 869                 case GRAPHIRE:
 870                         input_dev->evbit[0] |= BIT(EV_REL);
 871                         input_dev->relbit[0] |= BIT(REL_WHEEL);
 872                         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
 873                         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_STYLUS2);
 874                         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom->features->distance_max, 0, 0);
 875                         break;
 876
 877                 case INTUOS3:
 878                 case CINTIQ:
 879                         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
 880                         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3) | BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
 881                         input_set_abs_params(input_dev, ABS_RX, 0, 4097, 0, 0);
 882                         input_set_abs_params(input_dev, ABS_RY, 0, 4097, 0, 0);
 883                         /* fall through */
 884
 885                 case INTUOS:
 886                         input_dev->evbit[0] |= BIT(EV_MSC) | BIT(EV_REL);
 887                         input_dev->mscbit[0] |= BIT(MSC_SERIAL);
 888                         input_dev->relbit[0] |= BIT(REL_WHEEL);
 889                         input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE) | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
 890                         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_TOOL_BRUSH)
 891                                                           | BIT(BTN_TOOL_PENCIL) | BIT(BTN_TOOL_AIRBRUSH) | BIT(BTN_TOOL_LENS) | BIT(BTN_STYLUS2);
 892                         input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom->features->distance_max, 0, 0);
 893                         input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
 894                         input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
 895                         input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
 896                         input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
 897                         input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
 898                         break;
 899
 900                 case PL:
 901                         input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_STYLUS2) | BIT(BTN_TOOL_RUBBER);
 902                         break;
 903         }
 904
 905         endpoint = &intf->cur_altsetting->endpoint[0].desc;
 906
 907         if (wacom->features->pktlen > 10)
 908                 BUG();
 909
 910         usb_fill_int_urb(wacom->irq, dev,
 911                          usb_rcvintpipe(dev, endpoint->bEndpointAddress),
 912                          wacom->data, wacom->features->pktlen,
 913                          wacom->features->irq, wacom, endpoint->bInterval);
 914         wacom->irq->transfer_dma = wacom->data_dma;
 915         wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 916
 917         input_register_device(wacom->dev);
 918
 919         /* ask the tablet to report tablet data */
 920         usb_set_report(intf, 3, 2, rep_data, 2);
 921         /* repeat once (not sure why the first call often fails) */
 922         usb_set_report(intf, 3, 2, rep_data, 2);
 923
 924         usb_set_intfdata(intf, wacom);
 925         return 0;
 926
 927 fail2:  usb_buffer_free(dev, 10, wacom->data, wacom->data_dma);
 928 fail1:  input_free_device(input_dev);
 929         kfree(wacom);
 930         return -ENOMEM;
 931 }
 932
 933 static void wacom_disconnect(struct usb_interface *intf)
 934 {
 935         struct wacom *wacom = usb_get_intfdata (intf);
 936
 937         usb_set_intfdata(intf, NULL);
 938         if (wacom) {
 939                 usb_kill_urb(wacom->irq);
 940                 input_unregister_device(wacom->dev);
 941                 usb_free_urb(wacom->irq);
 942                 usb_buffer_free(interface_to_usbdev(intf), 10, wacom->data, wacom->data_dma);
 943                 kfree(wacom);
 944         }
 945 }
 946
 947 static struct usb_driver wacom_driver = {
 948         .name =         "wacom",
 949         .probe =        wacom_probe,
 950         .disconnect =   wacom_disconnect,
 951         .id_table =     wacom_ids,
 952 };
 953
 954 static int __init wacom_init(void)
 955 {
 956         int result = usb_register(&wacom_driver);
 957         if (result == 0)
 958                 info(DRIVER_VERSION ":" DRIVER_DESC);
 959         return result;
 960 }
 961
 962 static void __exit wacom_exit(void)
 963 {
 964         usb_deregister(&wacom_driver);
 965 }
 966
 967 module_init(wacom_init);
 968 module_exit(wacom_exit);