git.oblomov.eu Git - linux-2.6/blob - drivers/input/tablet/wacom_wac.c

   1 /*
   2  * drivers/input/tablet/wacom_wac.c
   3  *
   4  *  USB Wacom Graphire and Wacom Intuos tablet support - Wacom specific code
   5  *
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  */
  14 #include "wacom.h"
  15 #include "wacom_wac.h"
  16
  17 static int wacom_penpartner_irq(struct wacom_wac *wacom, void *wcombo)
  18 {
  19         unsigned char *data = wacom->data;
  20
  21         switch (data[0]) {
  22                 case 1:
  23                         if (data[5] & 0x80) {
  24                                 wacom->tool[0] = (data[5] & 0x20) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
  25                                 wacom->id[0] = (data[5] & 0x20) ? ERASER_DEVICE_ID : STYLUS_DEVICE_ID;
  26                                 wacom_report_key(wcombo, wacom->tool[0], 1);
  27                                 wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]); /* report tool id */
  28                                 wacom_report_abs(wcombo, ABS_X, wacom_le16_to_cpu(&data[1]));
  29                                 wacom_report_abs(wcombo, ABS_Y, wacom_le16_to_cpu(&data[3]));
  30                                 wacom_report_abs(wcombo, ABS_PRESSURE, (signed char)data[6] + 127);
  31                                 wacom_report_key(wcombo, BTN_TOUCH, ((signed char)data[6] > -127));
  32                                 wacom_report_key(wcombo, BTN_STYLUS, (data[5] & 0x40));
  33                         } else {
  34                                 wacom_report_key(wcombo, wacom->tool[0], 0);
  35                                 wacom_report_abs(wcombo, ABS_MISC, 0); /* report tool id */
  36                                 wacom_report_abs(wcombo, ABS_PRESSURE, -1);
  37                                 wacom_report_key(wcombo, BTN_TOUCH, 0);
  38                         }
  39                         break;
  40                 case 2:
  41                         wacom_report_key(wcombo, BTN_TOOL_PEN, 1);
  42                         wacom_report_abs(wcombo, ABS_MISC, STYLUS_DEVICE_ID); /* report tool id */
  43                         wacom_report_abs(wcombo, ABS_X, wacom_le16_to_cpu(&data[1]));
  44                         wacom_report_abs(wcombo, ABS_Y, wacom_le16_to_cpu(&data[3]));
  45                         wacom_report_abs(wcombo, ABS_PRESSURE, (signed char)data[6] + 127);
  46                         wacom_report_key(wcombo, BTN_TOUCH, ((signed char)data[6] > -80) && !(data[5] & 0x20));
  47                         wacom_report_key(wcombo, BTN_STYLUS, (data[5] & 0x40));
  48                         break;
  49                 default:
  50                         printk(KERN_INFO "wacom_penpartner_irq: received unknown report #%d\n", data[0]);
  51                         return 0;
  52         }
  53         return 1;
  54 }
  55
  56 static int wacom_pl_irq(struct wacom_wac *wacom, void *wcombo)
  57 {
  58         unsigned char *data = wacom->data;
  59         int prox, pressure;
  60
  61         if (data[0] != 2) {
  62                 dbg("wacom_pl_irq: received unknown report #%d", data[0]);
  63                 return 0;
  64         }
  65
  66         prox = data[1] & 0x40;
  67
  68         wacom->id[0] = ERASER_DEVICE_ID;
  69         if (prox) {
  70
  71                 pressure = (signed char)((data[7] << 1) | ((data[4] >> 2) & 1));
  72                 if (wacom->features->pressure_max > 255)
  73                         pressure = (pressure << 1) | ((data[4] >> 6) & 1);
  74                 pressure += (wacom->features->pressure_max + 1) / 2;
  75
  76                 /*
  77                  * if going from out of proximity into proximity select between the eraser
  78                  * and the pen based on the state of the stylus2 button, choose eraser if
  79                  * pressed else choose pen. if not a proximity change from out to in, send
  80                  * an out of proximity for previous tool then a in for new tool.
  81                  */
  82                 if (!wacom->tool[0]) {
  83                         /* Eraser bit set for DTF */
  84                         if (data[1] & 0x10)
  85                                 wacom->tool[1] = BTN_TOOL_RUBBER;
  86                         else
  87                                 /* Going into proximity select tool */
  88                                 wacom->tool[1] = (data[4] & 0x20) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
  89                 } else {
  90                         /* was entered with stylus2 pressed */
  91                         if (wacom->tool[1] == BTN_TOOL_RUBBER && !(data[4] & 0x20)) {
  92                                 /* report out proximity for previous tool */
  93                                 wacom_report_key(wcombo, wacom->tool[1], 0);
  94                                 wacom_input_sync(wcombo);
  95                                 wacom->tool[1] = BTN_TOOL_PEN;
  96                                 return 0;
  97                         }
  98                 }
  99                 if (wacom->tool[1] != BTN_TOOL_RUBBER) {
 100                         /* Unknown tool selected default to pen tool */
 101                         wacom->tool[1] = BTN_TOOL_PEN;
 102                         wacom->id[0] = STYLUS_DEVICE_ID;
 103                 }
 104                 wacom_report_key(wcombo, wacom->tool[1], prox); /* report in proximity for tool */
 105                 wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]); /* report tool id */
 106                 wacom_report_abs(wcombo, ABS_X, data[3] | (data[2] << 7) | ((data[1] & 0x03) << 14));
 107                 wacom_report_abs(wcombo, ABS_Y, data[6] | (data[5] << 7) | ((data[4] & 0x03) << 14));
 108                 wacom_report_abs(wcombo, ABS_PRESSURE, pressure);
 109
 110                 wacom_report_key(wcombo, BTN_TOUCH, data[4] & 0x08);
 111                 wacom_report_key(wcombo, BTN_STYLUS, data[4] & 0x10);
 112                 /* Only allow the stylus2 button to be reported for the pen tool. */
 113                 wacom_report_key(wcombo, BTN_STYLUS2, (wacom->tool[1] == BTN_TOOL_PEN) && (data[4] & 0x20));
 114         } else {
 115                 /* report proximity-out of a (valid) tool */
 116                 if (wacom->tool[1] != BTN_TOOL_RUBBER) {
 117                         /* Unknown tool selected default to pen tool */
 118                         wacom->tool[1] = BTN_TOOL_PEN;
 119                 }
 120                 wacom_report_key(wcombo, wacom->tool[1], prox);
 121         }
 122
 123         wacom->tool[0] = prox; /* Save proximity state */
 124         return 1;
 125 }
 126
 127 static int wacom_ptu_irq(struct wacom_wac *wacom, void *wcombo)
 128 {
 129         unsigned char *data = wacom->data;
 130
 131         if (data[0] != 2) {
 132                 printk(KERN_INFO "wacom_ptu_irq: received unknown report #%d\n", data[0]);
 133                 return 0;
 134         }
 135
 136         if (data[1] & 0x04) {
 137                 wacom_report_key(wcombo, BTN_TOOL_RUBBER, data[1] & 0x20);
 138                 wacom_report_key(wcombo, BTN_TOUCH, data[1] & 0x08);
 139                 wacom->id[0] = ERASER_DEVICE_ID;
 140         } else {
 141                 wacom_report_key(wcombo, BTN_TOOL_PEN, data[1] & 0x20);
 142                 wacom_report_key(wcombo, BTN_TOUCH, data[1] & 0x01);
 143                 wacom->id[0] = STYLUS_DEVICE_ID;
 144         }
 145         wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]); /* report tool id */
 146         wacom_report_abs(wcombo, ABS_X, wacom_le16_to_cpu(&data[2]));
 147         wacom_report_abs(wcombo, ABS_Y, wacom_le16_to_cpu(&data[4]));
 148         wacom_report_abs(wcombo, ABS_PRESSURE, wacom_le16_to_cpu(&data[6]));
 149         wacom_report_key(wcombo, BTN_STYLUS, data[1] & 0x02);
 150         wacom_report_key(wcombo, BTN_STYLUS2, data[1] & 0x10);
 151         return 1;
 152 }
 153
 154 static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 155 {
 156         unsigned char *data = wacom->data;
 157         int x, y, rw;
 158
 159         if (data[0] != 2) {
 160                 dbg("wacom_graphire_irq: received unknown report #%d", data[0]);
 161                 return 0;
 162         }
 163
 164         if (data[1] & 0x80) {
 165                 /* in prox and not a pad data */
 166
 167                 switch ((data[1] >> 5) & 3) {
 168
 169                         case 0: /* Pen */
 170                                 wacom->tool[0] = BTN_TOOL_PEN;
 171                                 wacom->id[0] = STYLUS_DEVICE_ID;
 172                                 break;
 173
 174                         case 1: /* Rubber */
 175                                 wacom->tool[0] = BTN_TOOL_RUBBER;
 176                                 wacom->id[0] = ERASER_DEVICE_ID;
 177                                 break;
 178
 179                         case 2: /* Mouse with wheel */
 180                                 wacom_report_key(wcombo, BTN_MIDDLE, data[1] & 0x04);
 181                                 if (wacom->features->type == WACOM_G4 ||
 182                                                 wacom->features->type == WACOM_MO) {
 183                                         rw = data[7] & 0x04 ? (data[7] & 0x03)-4 : (data[7] & 0x03);
 184                                         wacom_report_rel(wcombo, REL_WHEEL, -rw);
 185                                 } else
 186                                         wacom_report_rel(wcombo, REL_WHEEL, -(signed char) data[6]);
 187                                 /* fall through */
 188
 189                         case 3: /* Mouse without wheel */
 190                                 wacom->tool[0] = BTN_TOOL_MOUSE;
 191                                 wacom->id[0] = CURSOR_DEVICE_ID;
 192                                 wacom_report_key(wcombo, BTN_LEFT, data[1] & 0x01);
 193                                 wacom_report_key(wcombo, BTN_RIGHT, data[1] & 0x02);
 194                                 if (wacom->features->type == WACOM_G4 ||
 195                                                 wacom->features->type == WACOM_MO)
 196                                         wacom_report_abs(wcombo, ABS_DISTANCE, data[6] & 0x3f);
 197                                 else
 198                                         wacom_report_abs(wcombo, ABS_DISTANCE, data[7] & 0x3f);
 199                                 break;
 200                 }
 201                 x = wacom_le16_to_cpu(&data[2]);
 202                 y = wacom_le16_to_cpu(&data[4]);
 203                 wacom_report_abs(wcombo, ABS_X, x);
 204                 wacom_report_abs(wcombo, ABS_Y, y);
 205                 if (wacom->tool[0] != BTN_TOOL_MOUSE) {
 206                         wacom_report_abs(wcombo, ABS_PRESSURE, data[6] | ((data[7] & 0x01) << 8));
 207                         wacom_report_key(wcombo, BTN_TOUCH, data[1] & 0x01);
 208                         wacom_report_key(wcombo, BTN_STYLUS, data[1] & 0x02);
 209                         wacom_report_key(wcombo, BTN_STYLUS2, data[1] & 0x04);
 210                 }
 211                 wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]); /* report tool id */
 212                 wacom_report_key(wcombo, wacom->tool[0], 1);
 213         } else if (wacom->id[0]) {
 214                 wacom_report_abs(wcombo, ABS_X, 0);
 215                 wacom_report_abs(wcombo, ABS_Y, 0);
 216                 if (wacom->tool[0] == BTN_TOOL_MOUSE) {
 217                         wacom_report_key(wcombo, BTN_LEFT, 0);
 218                         wacom_report_key(wcombo, BTN_RIGHT, 0);
 219                         wacom_report_abs(wcombo, ABS_DISTANCE, 0);
 220                 } else {
 221                         wacom_report_abs(wcombo, ABS_PRESSURE, 0);
 222                         wacom_report_key(wcombo, BTN_TOUCH, 0);
 223                         wacom_report_key(wcombo, BTN_STYLUS, 0);
 224                         wacom_report_key(wcombo, BTN_STYLUS2, 0);
 225                 }
 226                 wacom->id[0] = 0;
 227                 wacom_report_abs(wcombo, ABS_MISC, 0); /* reset tool id */
 228                 wacom_report_key(wcombo, wacom->tool[0], 0);
 229         }
 230
 231         /* send pad data */
 232         switch (wacom->features->type) {
 233             case WACOM_G4:
 234                 if (data[7] & 0xf8) {
 235                         wacom_input_sync(wcombo); /* sync last event */
 236                         wacom->id[1] = PAD_DEVICE_ID;
 237                         wacom_report_key(wcombo, BTN_0, (data[7] & 0x40));
 238                         wacom_report_key(wcombo, BTN_4, (data[7] & 0x80));
 239                         rw = ((data[7] & 0x18) >> 3) - ((data[7] & 0x20) >> 3);
 240                         wacom_report_rel(wcombo, REL_WHEEL, rw);
 241                         wacom_report_key(wcombo, BTN_TOOL_FINGER, 0xf0);
 242                         wacom_report_abs(wcombo, ABS_MISC, wacom->id[1]);
 243                         wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
 244                 } else if (wacom->id[1]) {
 245                         wacom_input_sync(wcombo); /* sync last event */
 246                         wacom->id[1] = 0;
 247                         wacom_report_key(wcombo, BTN_0, (data[7] & 0x40));
 248                         wacom_report_key(wcombo, BTN_4, (data[7] & 0x80));
 249                         wacom_report_key(wcombo, BTN_TOOL_FINGER, 0);
 250                         wacom_report_abs(wcombo, ABS_MISC, 0);
 251                         wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
 252                 }
 253                 break;
 254             case WACOM_MO:
 255                 if ((data[7] & 0xf8) || (data[8] & 0xff)) {
 256                         wacom_input_sync(wcombo); /* sync last event */
 257                         wacom->id[1] = PAD_DEVICE_ID;
 258                         wacom_report_key(wcombo, BTN_0, (data[7] & 0x08));
 259                         wacom_report_key(wcombo, BTN_1, (data[7] & 0x20));
 260                         wacom_report_key(wcombo, BTN_4, (data[7] & 0x10));
 261                         wacom_report_key(wcombo, BTN_5, (data[7] & 0x40));
 262                         wacom_report_abs(wcombo, ABS_WHEEL, (data[8] & 0x7f));
 263                         wacom_report_key(wcombo, BTN_TOOL_FINGER, 0xf0);
 264                         wacom_report_abs(wcombo, ABS_MISC, wacom->id[1]);
 265                         wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
 266                 } else if (wacom->id[1]) {
 267                         wacom_input_sync(wcombo); /* sync last event */
 268                         wacom->id[1] = 0;
 269                         wacom_report_key(wcombo, BTN_0, (data[7] & 0x08));
 270                         wacom_report_key(wcombo, BTN_1, (data[7] & 0x20));
 271                         wacom_report_key(wcombo, BTN_4, (data[7] & 0x10));
 272                         wacom_report_key(wcombo, BTN_5, (data[7] & 0x40));
 273                         wacom_report_abs(wcombo, ABS_WHEEL, (data[8] & 0x7f));
 274                         wacom_report_key(wcombo, BTN_TOOL_FINGER, 0);
 275                         wacom_report_abs(wcombo, ABS_MISC, 0);
 276                         wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
 277                 }
 278                 break;
 279         }
 280         return 1;
 281 }
 282
 283 static int wacom_intuos_inout(struct wacom_wac *wacom, void *wcombo)
 284 {
 285         unsigned char *data = wacom->data;
 286         int idx;
 287
 288         /* tool number */
 289         idx = data[1] & 0x01;
 290
 291         /* Enter report */
 292         if ((data[1] & 0xfc) == 0xc0) {
 293                 /* serial number of the tool */
 294                 wacom->serial[idx] = ((data[3] & 0x0f) << 28) +
 295                         (data[4] << 20) + (data[5] << 12) +
 296                         (data[6] << 4) + (data[7] >> 4);
 297
 298                 wacom->id[idx] = (data[2] << 4) | (data[3] >> 4);
 299                 switch (wacom->id[idx]) {
 300                         case 0x812: /* Inking pen */
 301                         case 0x801: /* Intuos3 Inking pen */
 302                         case 0x012:
 303                                 wacom->tool[idx] = BTN_TOOL_PENCIL;
 304                                 break;
 305                         case 0x822: /* Pen */
 306                         case 0x842:
 307                         case 0x852:
 308                         case 0x823: /* Intuos3 Grip Pen */
 309                         case 0x813: /* Intuos3 Classic Pen */
 310                         case 0x885: /* Intuos3 Marker Pen */
 311                         case 0x022:
 312                                 wacom->tool[idx] = BTN_TOOL_PEN;
 313                                 break;
 314                         case 0x832: /* Stroke pen */
 315                         case 0x032:
 316                                 wacom->tool[idx] = BTN_TOOL_BRUSH;
 317                                 break;
 318                         case 0x007: /* Mouse 4D and 2D */
 319                         case 0x09c:
 320                         case 0x094:
 321                         case 0x017: /* Intuos3 2D Mouse */
 322                                 wacom->tool[idx] = BTN_TOOL_MOUSE;
 323                                 break;
 324                         case 0x096: /* Lens cursor */
 325                         case 0x097: /* Intuos3 Lens cursor */
 326                                 wacom->tool[idx] = BTN_TOOL_LENS;
 327                                 break;
 328                         case 0x82a: /* Eraser */
 329                         case 0x85a:
 330                         case 0x91a:
 331                         case 0xd1a:
 332                         case 0x0fa:
 333                         case 0x82b: /* Intuos3 Grip Pen Eraser */
 334                         case 0x81b: /* Intuos3 Classic Pen Eraser */
 335                         case 0x91b: /* Intuos3 Airbrush Eraser */
 336                                 wacom->tool[idx] = BTN_TOOL_RUBBER;
 337                                 break;
 338                         case 0xd12:
 339                         case 0x912:
 340                         case 0x112:
 341                         case 0x913: /* Intuos3 Airbrush */
 342                                 wacom->tool[idx] = BTN_TOOL_AIRBRUSH;
 343                                 break;
 344                         default: /* Unknown tool */
 345                                 wacom->tool[idx] = BTN_TOOL_PEN;
 346                 }
 347                 return 1;
 348         }
 349
 350         /* Exit report */
 351         if ((data[1] & 0xfe) == 0x80) {
 352                 wacom_report_abs(wcombo, ABS_X, 0);
 353                 wacom_report_abs(wcombo, ABS_Y, 0);
 354                 wacom_report_abs(wcombo, ABS_DISTANCE, 0);
 355                 if (wacom->tool[idx] >= BTN_TOOL_MOUSE) {
 356                         wacom_report_key(wcombo, BTN_LEFT, 0);
 357                         wacom_report_key(wcombo, BTN_MIDDLE, 0);
 358                         wacom_report_key(wcombo, BTN_RIGHT, 0);
 359                         wacom_report_key(wcombo, BTN_SIDE, 0);
 360                         wacom_report_key(wcombo, BTN_EXTRA, 0);
 361                         wacom_report_abs(wcombo, ABS_THROTTLE, 0);
 362                         wacom_report_abs(wcombo, ABS_RZ, 0);
 363                 } else {
 364                         wacom_report_abs(wcombo, ABS_PRESSURE, 0);
 365                         wacom_report_abs(wcombo, ABS_TILT_X, 0);
 366                         wacom_report_abs(wcombo, ABS_TILT_Y, 0);
 367                         wacom_report_key(wcombo, BTN_STYLUS, 0);
 368                         wacom_report_key(wcombo, BTN_STYLUS2, 0);
 369                         wacom_report_key(wcombo, BTN_TOUCH, 0);
 370                         wacom_report_abs(wcombo, ABS_WHEEL, 0);
 371                 }
 372                 wacom_report_key(wcombo, wacom->tool[idx], 0);
 373                 wacom_report_abs(wcombo, ABS_MISC, 0); /* reset tool id */
 374                 wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
 375                 return 2;
 376         }
 377         return 0;
 378 }
 379
 380 static void wacom_intuos_general(struct wacom_wac *wacom, void *wcombo)
 381 {
 382         unsigned char *data = wacom->data;
 383         unsigned int t;
 384
 385         /* general pen packet */
 386         if ((data[1] & 0xb8) == 0xa0) {
 387                 t = (data[6] << 2) | ((data[7] >> 6) & 3);
 388                 wacom_report_abs(wcombo, ABS_PRESSURE, t);
 389                 wacom_report_abs(wcombo, ABS_TILT_X,
 390                                 ((data[7] << 1) & 0x7e) | (data[8] >> 7));
 391                 wacom_report_abs(wcombo, ABS_TILT_Y, data[8] & 0x7f);
 392                 wacom_report_key(wcombo, BTN_STYLUS, data[1] & 2);
 393                 wacom_report_key(wcombo, BTN_STYLUS2, data[1] & 4);
 394                 wacom_report_key(wcombo, BTN_TOUCH, t > 10);
 395         }
 396
 397         /* airbrush second packet */
 398         if ((data[1] & 0xbc) == 0xb4) {
 399                 wacom_report_abs(wcombo, ABS_WHEEL,
 400                                 (data[6] << 2) | ((data[7] >> 6) & 3));
 401                 wacom_report_abs(wcombo, ABS_TILT_X,
 402                                 ((data[7] << 1) & 0x7e) | (data[8] >> 7));
 403                 wacom_report_abs(wcombo, ABS_TILT_Y, data[8] & 0x7f);
 404         }
 405         return;
 406 }
 407
 408 static int wacom_intuos_irq(struct wacom_wac *wacom, void *wcombo)
 409 {
 410         unsigned char *data = wacom->data;
 411         unsigned int t;
 412         int idx, result;
 413
 414         if (data[0] != 2 && data[0] != 5 && data[0] != 6 && data[0] != 12) {
 415                 dbg("wacom_intuos_irq: received unknown report #%d", data[0]);
 416                 return 0;
 417         }
 418
 419         /* tool number */
 420         idx = data[1] & 0x01;
 421
 422         /* pad packets. Works as a second tool and is always in prox */
 423         if (data[0] == 12) {
 424                 /* initiate the pad as a device */
 425                 if (wacom->tool[1] != BTN_TOOL_FINGER)
 426                         wacom->tool[1] = BTN_TOOL_FINGER;
 427
 428                 wacom_report_key(wcombo, BTN_0, (data[5] & 0x01));
 429                 wacom_report_key(wcombo, BTN_1, (data[5] & 0x02));
 430                 wacom_report_key(wcombo, BTN_2, (data[5] & 0x04));
 431                 wacom_report_key(wcombo, BTN_3, (data[5] & 0x08));
 432                 wacom_report_key(wcombo, BTN_4, (data[6] & 0x01));
 433                 wacom_report_key(wcombo, BTN_5, (data[6] & 0x02));
 434                 wacom_report_key(wcombo, BTN_6, (data[6] & 0x04));
 435                 wacom_report_key(wcombo, BTN_7, (data[6] & 0x08));
 436                 wacom_report_key(wcombo, BTN_8, (data[5] & 0x10));
 437                 wacom_report_key(wcombo, BTN_9, (data[6] & 0x10));
 438                 wacom_report_abs(wcombo, ABS_RX, ((data[1] & 0x1f) << 8) | data[2]);
 439                 wacom_report_abs(wcombo, ABS_RY, ((data[3] & 0x1f) << 8) | data[4]);
 440
 441                 if ((data[5] & 0x1f) | (data[6] & 0x1f) | (data[1] & 0x1f) |
 442                         data[2] | (data[3] & 0x1f) | data[4])
 443                         wacom_report_key(wcombo, wacom->tool[1], 1);
 444                 else
 445                         wacom_report_key(wcombo, wacom->tool[1], 0);
 446                 wacom_report_abs(wcombo, ABS_MISC, PAD_DEVICE_ID);
 447                 wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xffffffff);
 448                 return 1;
 449         }
 450
 451         /* process in/out prox events */
 452         result = wacom_intuos_inout(wacom, wcombo);
 453         if (result)
 454                 return result-1;
 455
 456         /* Only large I3 and I1 & I2 support Lense Cursor */
 457         if ((wacom->tool[idx] == BTN_TOOL_LENS)
 458                         && ((wacom->features->type == INTUOS3)
 459                         || (wacom->features->type == INTUOS3S)))
 460                 return 0;
 461
 462         /* Cintiq doesn't send data when RDY bit isn't set */
 463         if ((wacom->features->type == CINTIQ) && !(data[1] & 0x40))
 464                  return 0;
 465
 466         if (wacom->features->type >= INTUOS3S) {
 467                 wacom_report_abs(wcombo, ABS_X, (data[2] << 9) | (data[3] << 1) | ((data[9] >> 1) & 1));
 468                 wacom_report_abs(wcombo, ABS_Y, (data[4] << 9) | (data[5] << 1) | (data[9] & 1));
 469                 wacom_report_abs(wcombo, ABS_DISTANCE, ((data[9] >> 2) & 0x3f));
 470         } else {
 471                 wacom_report_abs(wcombo, ABS_X, wacom_be16_to_cpu(&data[2]));
 472                 wacom_report_abs(wcombo, ABS_Y, wacom_be16_to_cpu(&data[4]));
 473                 wacom_report_abs(wcombo, ABS_DISTANCE, ((data[9] >> 3) & 0x1f));
 474         }
 475
 476         /* process general packets */
 477         wacom_intuos_general(wacom, wcombo);
 478
 479         /* 4D mouse, 2D mouse, marker pen rotation, or Lens cursor packets */
 480         if ((data[1] & 0xbc) == 0xa8 || (data[1] & 0xbe) == 0xb0) {
 481
 482                 if (data[1] & 0x02) {
 483                         /* Rotation packet */
 484                         if (wacom->features->type >= INTUOS3S) {
 485                                 /* I3 marker pen rotation */
 486                                 t = (data[6] << 3) | ((data[7] >> 5) & 7);
 487                                 t = (data[7] & 0x20) ? ((t > 900) ? ((t-1) / 2 - 1350) :
 488                                         ((t-1) / 2 + 450)) : (450 - t / 2) ;
 489                                 wacom_report_abs(wcombo, ABS_Z, t);
 490                         } else {
 491                                 /* 4D mouse rotation packet */
 492                                 t = (data[6] << 3) | ((data[7] >> 5) & 7);
 493                                 wacom_report_abs(wcombo, ABS_RZ, (data[7] & 0x20) ?
 494                                         ((t - 1) / 2) : -t / 2);
 495                         }
 496
 497                 } else if (!(data[1] & 0x10) && wacom->features->type < INTUOS3S) {
 498                         /* 4D mouse packet */
 499                         wacom_report_key(wcombo, BTN_LEFT,   data[8] & 0x01);
 500                         wacom_report_key(wcombo, BTN_MIDDLE, data[8] & 0x02);
 501                         wacom_report_key(wcombo, BTN_RIGHT,  data[8] & 0x04);
 502
 503                         wacom_report_key(wcombo, BTN_SIDE,   data[8] & 0x20);
 504                         wacom_report_key(wcombo, BTN_EXTRA,  data[8] & 0x10);
 505                         t = (data[6] << 2) | ((data[7] >> 6) & 3);
 506                         wacom_report_abs(wcombo, ABS_THROTTLE, (data[8] & 0x08) ? -t : t);
 507
 508                 } else if (wacom->tool[idx] == BTN_TOOL_MOUSE) {
 509                         /* 2D mouse packet */
 510                         wacom_report_key(wcombo, BTN_LEFT,   data[8] & 0x04);
 511                         wacom_report_key(wcombo, BTN_MIDDLE, data[8] & 0x08);
 512                         wacom_report_key(wcombo, BTN_RIGHT,  data[8] & 0x10);
 513                         wacom_report_rel(wcombo, REL_WHEEL, (data[8] & 0x01)
 514                                                  - ((data[8] & 0x02) >> 1));
 515
 516                         /* I3 2D mouse side buttons */
 517                         if (wacom->features->type >= INTUOS3S && wacom->features->type <= INTUOS3L) {
 518                                 wacom_report_key(wcombo, BTN_SIDE,   data[8] & 0x40);
 519                                 wacom_report_key(wcombo, BTN_EXTRA,  data[8] & 0x20);
 520                         }
 521
 522                 } else if (wacom->features->type < INTUOS3S || wacom->features->type == INTUOS3L) {
 523                         /* Lens cursor packets */
 524                         wacom_report_key(wcombo, BTN_LEFT,   data[8] & 0x01);
 525                         wacom_report_key(wcombo, BTN_MIDDLE, data[8] & 0x02);
 526                         wacom_report_key(wcombo, BTN_RIGHT,  data[8] & 0x04);
 527                         wacom_report_key(wcombo, BTN_SIDE,   data[8] & 0x10);
 528                         wacom_report_key(wcombo, BTN_EXTRA,  data[8] & 0x08);
 529                 }
 530         }
 531
 532         wacom_report_abs(wcombo, ABS_MISC, wacom->id[idx]); /* report tool id */
 533         wacom_report_key(wcombo, wacom->tool[idx], 1);
 534         wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
 535         return 1;
 536 }
 537
 538 static int wacom_tpc_irq(struct wacom_wac *wacom, void *wcombo)
 539 {
 540         char *data = wacom->data;
 541         int prox = 0, pressure;
 542         static int stylusInProx, touchInProx = 1, touchOut;
 543         struct urb *urb = ((struct wacom_combo *)wcombo)->urb;
 544
 545         dbg("wacom_tpc_irq: received report #%d", data[0]);
 546
 547         if (urb->actual_length == 5 || data[0] == 6) { /* Touch data */
 548                 if (urb->actual_length == 5) {  /* with touch */
 549                         prox = data[0] & 0x03;
 550                 } else {  /* with capacity */
 551                         prox = data[1] & 0x03;
 552                 }
 553
 554                 if (!stylusInProx) { /* stylus not in prox */
 555                         if (prox) {
 556                                 if (touchInProx) {
 557                                         wacom->tool[1] = BTN_TOOL_DOUBLETAP;
 558                                         wacom->id[0] = TOUCH_DEVICE_ID;
 559                                         if (urb->actual_length != 5) {
 560                                                 wacom_report_abs(wcombo, ABS_X, wacom_le16_to_cpu(&data[2]));
 561                                                 wacom_report_abs(wcombo, ABS_Y, wacom_le16_to_cpu(&data[4]));
 562                                                 wacom_report_abs(wcombo, ABS_PRESSURE, wacom_le16_to_cpu(&data[6]));
 563                                                 wacom_report_key(wcombo, BTN_TOUCH, wacom_le16_to_cpu(&data[6]));
 564                                         } else {
 565                                                 wacom_report_abs(wcombo, ABS_X, wacom_le16_to_cpu(&data[1]));
 566                                                 wacom_report_abs(wcombo, ABS_Y, wacom_le16_to_cpu(&data[3]));
 567                                                 wacom_report_key(wcombo, BTN_TOUCH, 1);
 568                                         }
 569                                         wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]);
 570                                         wacom_report_key(wcombo, wacom->tool[1], prox & 0x01);
 571                                         touchOut = 1;
 572                                         return 1;
 573                                 }
 574                         } else {
 575                                 wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]);
 576                                 wacom_report_key(wcombo, wacom->tool[1], prox & 0x01);
 577                                 wacom_report_key(wcombo, BTN_TOUCH, 0);
 578                                 touchOut = 0;
 579                                 touchInProx = 1;
 580                                 return 1;
 581                         }
 582                 } else if (touchOut || !prox) { /* force touch out-prox */
 583                         wacom_report_abs(wcombo, ABS_MISC, TOUCH_DEVICE_ID);
 584                         wacom_report_key(wcombo, BTN_TOUCH, 0);
 585                         touchOut = 0;
 586                         touchInProx = 1;
 587                         return 1;
 588                 }
 589         } else if (data[0] == 2) { /* Penabled */
 590                 prox = data[1] & 0x20;
 591
 592                 touchInProx = 0;
 593
 594                 wacom->id[0] = ERASER_DEVICE_ID;
 595
 596                 /*
 597                  * if going from out of proximity into proximity select between the eraser
 598                  * and the pen based on the state of the stylus2 button, choose eraser if
 599                  * pressed else choose pen. if not a proximity change from out to in, send
 600                  * an out of proximity for previous tool then a in for new tool.
 601                  */
 602                 if (prox) { /* in prox */
 603                         if (!wacom->tool[0]) {
 604                                 /* Going into proximity select tool */
 605                                 wacom->tool[1] = (data[1] & 0x08) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
 606                                 if (wacom->tool[1] == BTN_TOOL_PEN)
 607                                         wacom->id[0] = STYLUS_DEVICE_ID;
 608                         } else if (wacom->tool[1] == BTN_TOOL_RUBBER && !(data[1] & 0x08)) {
 609                                 /*
 610                                  * was entered with stylus2 pressed
 611                                  * report out proximity for previous tool
 612                                 */
 613                                 wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]);
 614                                 wacom_report_key(wcombo, wacom->tool[1], 0);
 615                                 wacom_input_sync(wcombo);
 616
 617                                 /* set new tool */
 618                                 wacom->tool[1] = BTN_TOOL_PEN;
 619                                 wacom->id[0] = STYLUS_DEVICE_ID;
 620                                 return 0;
 621                         }
 622                         if (wacom->tool[1] != BTN_TOOL_RUBBER) {
 623                                 /* Unknown tool selected default to pen tool */
 624                                 wacom->tool[1] = BTN_TOOL_PEN;
 625                                 wacom->id[0] = STYLUS_DEVICE_ID;
 626                         }
 627                         wacom_report_key(wcombo, BTN_STYLUS, data[1] & 0x02);
 628                         wacom_report_key(wcombo, BTN_STYLUS2, data[1] & 0x10);
 629                         wacom_report_abs(wcombo, ABS_X, wacom_le16_to_cpu(&data[2]));
 630                         wacom_report_abs(wcombo, ABS_Y, wacom_le16_to_cpu(&data[4]));
 631                         pressure = ((data[7] & 0x01) << 8) | data[6];
 632                         if (pressure < 0)
 633                                 pressure = wacom->features->pressure_max + pressure + 1;
 634                         wacom_report_abs(wcombo, ABS_PRESSURE, pressure);
 635                         wacom_report_key(wcombo, BTN_TOUCH, pressure);
 636                 } else {
 637                         wacom_report_abs(wcombo, ABS_PRESSURE, 0);
 638                         wacom_report_key(wcombo, BTN_STYLUS, 0);
 639                         wacom_report_key(wcombo, BTN_STYLUS2, 0);
 640                         wacom_report_key(wcombo, BTN_TOUCH, 0);
 641                 }
 642                 wacom_report_key(wcombo, wacom->tool[1], prox);
 643                 wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]);
 644                 stylusInProx = prox;
 645                 wacom->tool[0] = prox;
 646                 return 1;
 647         }
 648         return 0;
 649 }
 650
 651 int wacom_wac_irq(struct wacom_wac *wacom_wac, void *wcombo)
 652 {
 653         switch (wacom_wac->features->type) {
 654                 case PENPARTNER:
 655                         return wacom_penpartner_irq(wacom_wac, wcombo);
 656
 657                 case PL:
 658                         return wacom_pl_irq(wacom_wac, wcombo);
 659
 660                 case WACOM_G4:
 661                 case GRAPHIRE:
 662                 case WACOM_MO:
 663                         return wacom_graphire_irq(wacom_wac, wcombo);
 664
 665                 case PTU:
 666                         return wacom_ptu_irq(wacom_wac, wcombo);
 667
 668                 case INTUOS:
 669                 case INTUOS3S:
 670                 case INTUOS3:
 671                 case INTUOS3L:
 672                 case CINTIQ:
 673                 case WACOM_BEE:
 674                         return wacom_intuos_irq(wacom_wac, wcombo);
 675
 676                 case TABLETPC:
 677                         return wacom_tpc_irq(wacom_wac, wcombo);
 678
 679                 default:
 680                         return 0;
 681         }
 682         return 0;
 683 }
 684
 685 void wacom_init_input_dev(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 686 {
 687         switch (wacom_wac->features->type) {
 688                 case WACOM_MO:
 689                         input_dev_mo(input_dev, wacom_wac);
 690                 case WACOM_G4:
 691                         input_dev_g4(input_dev, wacom_wac);
 692                         /* fall through */
 693                 case GRAPHIRE:
 694                         input_dev_g(input_dev, wacom_wac);
 695                         break;
 696                 case WACOM_BEE:
 697                         input_dev_bee(input_dev, wacom_wac);
 698                 case INTUOS3:
 699                 case INTUOS3L:
 700                 case CINTIQ:
 701                         input_dev_i3(input_dev, wacom_wac);
 702                         /* fall through */
 703                 case INTUOS3S:
 704                         input_dev_i3s(input_dev, wacom_wac);
 705                         /* fall through */
 706                 case INTUOS:
 707                         input_dev_i(input_dev, wacom_wac);
 708                         break;
 709                 case PL:
 710                 case PTU:
 711                 case TABLETPC:
 712                         input_dev_pl(input_dev, wacom_wac);
 713                         /* fall through */
 714                 case PENPARTNER:
 715                         input_dev_pt(input_dev, wacom_wac);
 716                         break;
 717         }
 718         return;
 719 }
 720
 721 static struct wacom_features wacom_features[] = {
 722         { "Wacom Penpartner",    7,   5040,  3780,  255,  0, PENPARTNER },
 723         { "Wacom Graphire",      8,  10206,  7422,  511, 63, GRAPHIRE },
 724         { "Wacom Graphire2 4x5", 8,  10206,  7422,  511, 63, GRAPHIRE },
 725         { "Wacom Graphire2 5x7", 8,  13918, 10206,  511, 63, GRAPHIRE },
 726         { "Wacom Graphire3",     8,  10208,  7424,  511, 63, GRAPHIRE },
 727         { "Wacom Graphire3 6x8", 8,  16704, 12064,  511, 63, GRAPHIRE },
 728         { "Wacom Graphire4 4x5", 8,  10208,  7424,  511, 63, WACOM_G4 },
 729         { "Wacom Graphire4 6x8", 8,  16704, 12064,  511, 63, WACOM_G4 },
 730         { "Wacom BambooFun 4x5", 9,  14760,  9225,  511, 63, WACOM_MO },
 731         { "Wacom BambooFun 6x8", 9,  21648, 13530,  511, 63, WACOM_MO },
 732         { "Wacom Bamboo1 Medium",8,  16704, 12064,  511, 63, GRAPHIRE },
 733         { "Wacom Volito",        8,   5104,  3712,  511, 63, GRAPHIRE },
 734         { "Wacom PenStation2",   8,   3250,  2320,  255, 63, GRAPHIRE },
 735         { "Wacom Volito2 4x5",   8,   5104,  3712,  511, 63, GRAPHIRE },
 736         { "Wacom Volito2 2x3",   8,   3248,  2320,  511, 63, GRAPHIRE },
 737         { "Wacom PenPartner2",   8,   3250,  2320,  511, 63, GRAPHIRE },
 738         { "Wacom Bamboo",        9,  14760,  9225,  511, 63, WACOM_MO },
 739         { "Wacom Bamboo1",       8,   5104,  3712,  511, 63, GRAPHIRE },
 740         { "Wacom Intuos 4x5",   10,  12700, 10600, 1023, 31, INTUOS },
 741         { "Wacom Intuos 6x8",   10,  20320, 16240, 1023, 31, INTUOS },
 742         { "Wacom Intuos 9x12",  10,  30480, 24060, 1023, 31, INTUOS },
 743         { "Wacom Intuos 12x12", 10,  30480, 31680, 1023, 31, INTUOS },
 744         { "Wacom Intuos 12x18", 10,  45720, 31680, 1023, 31, INTUOS },
 745         { "Wacom PL400",         8,   5408,  4056,  255,  0, PL },
 746         { "Wacom PL500",         8,   6144,  4608,  255,  0, PL },
 747         { "Wacom PL600",         8,   6126,  4604,  255,  0, PL },
 748         { "Wacom PL600SX",       8,   6260,  5016,  255,  0, PL },
 749         { "Wacom PL550",         8,   6144,  4608,  511,  0, PL },
 750         { "Wacom PL800",         8,   7220,  5780,  511,  0, PL },
 751         { "Wacom PL700",         8,   6758,  5406,  511,  0, PL },
 752         { "Wacom PL510",         8,   6282,  4762,  511,  0, PL },
 753         { "Wacom DTU710",        8,  34080, 27660,  511,  0, PL },
 754         { "Wacom DTF521",        8,   6282,  4762,  511,  0, PL },
 755         { "Wacom DTF720",        8,   6858,  5506,  511,  0, PL },
 756         { "Wacom Cintiq Partner",8,  20480, 15360,  511,  0, PTU },
 757         { "Wacom Intuos2 4x5",   10, 12700, 10600, 1023, 31, INTUOS },
 758         { "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 31, INTUOS },
 759         { "Wacom Intuos2 9x12",  10, 30480, 24060, 1023, 31, INTUOS },
 760         { "Wacom Intuos2 12x12", 10, 30480, 31680, 1023, 31, INTUOS },
 761         { "Wacom Intuos2 12x18", 10, 45720, 31680, 1023, 31, INTUOS },
 762         { "Wacom Intuos3 4x5",   10, 25400, 20320, 1023, 63, INTUOS3S },
 763         { "Wacom Intuos3 6x8",   10, 40640, 30480, 1023, 63, INTUOS3 },
 764         { "Wacom Intuos3 9x12",  10, 60960, 45720, 1023, 63, INTUOS3 },
 765         { "Wacom Intuos3 12x12", 10, 60960, 60960, 1023, 63, INTUOS3L },
 766         { "Wacom Intuos3 12x19", 10, 97536, 60960, 1023, 63, INTUOS3L },
 767         { "Wacom Intuos3 6x11",  10, 54204, 31750, 1023, 63, INTUOS3 },
 768         { "Wacom Intuos3 4x6",   10, 31496, 19685, 1023, 63, INTUOS3S },
 769         { "Wacom Cintiq 21UX",   10, 87200, 65600, 1023, 63, CINTIQ },
 770         { "Wacom Cintiq 20WSX",  10, 86680, 54180, 1023, 63, WACOM_BEE },
 771         { "Wacom Cintiq 12WX",   10, 53020, 33440, 1023, 63, WACOM_BEE },
 772         { "Wacom DTU1931",        8, 37832, 30305,  511,  0, PL },
 773         { "Wacom ISDv4 90",       8, 26202, 16325,  255,  0, TABLETPC },
 774         { "Wacom ISDv4 93",       8, 26202, 16325,  255,  0, TABLETPC },
 775         { "Wacom ISDv4 9A",       8, 26202, 16325,  255,  0, TABLETPC },
 776         { "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 31, INTUOS },
 777         { }
 778 };
 779
 780 static struct usb_device_id wacom_ids[] = {
 781         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x00) },
 782         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x10) },
 783         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x11) },
 784         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x12) },
 785         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x13) },
 786         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x14) },
 787         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x15) },
 788         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x16) },
 789         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x17) },
 790         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x18) },
 791         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x19) },
 792         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x60) },
 793         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x61) },
 794         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x62) },
 795         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x63) },
 796         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x64) },
 797         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x65) },
 798         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x69) },
 799         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x20) },
 800         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x21) },
 801         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x22) },
 802         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x23) },
 803         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x24) },
 804         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x30) },
 805         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x31) },
 806         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x32) },
 807         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x33) },
 808         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x34) },
 809         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x35) },
 810         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x37) },
 811         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x38) },
 812         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x39) },
 813         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC0) },
 814         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC4) },
 815         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x03) },
 816         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x41) },
 817         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x42) },
 818         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x43) },
 819         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x44) },
 820         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x45) },
 821         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB0) },
 822         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB1) },
 823         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB2) },
 824         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB3) },
 825         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB4) },
 826         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB5) },
 827         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB7) },
 828         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x3F) },
 829         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC5) },
 830         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC6) },
 831         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC7) },
 832         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x90) },
 833         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x93) },
 834         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x9A) },
 835         { USB_DEVICE(USB_VENDOR_ID_WACOM, 0x47) },
 836         { }
 837 };
 838
 839 const struct usb_device_id *get_device_table(void)
 840 {
 841         const struct usb_device_id *id_table = wacom_ids;
 842
 843         return id_table;
 844 }
 845
 846 struct wacom_features * get_wacom_feature(const struct usb_device_id *id)
 847 {
 848         int index = id - wacom_ids;
 849         struct wacom_features *wf = &wacom_features[index];
 850
 851         return wf;
 852 }
 853
 854 MODULE_DEVICE_TABLE(usb, wacom_ids);