drivers/hid/hid-multitouch.c

   1 /*
   2  *  HID driver for multitouch panels
   3  *
   4  *  Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
   5  *  Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *
   8  *  This code is partly based on hid-egalax.c:
   9  *
  10  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  11  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  12  *  Copyright (c) 2010 Canonical, Ltd.
  13  *
  14  *  This code is partly based on hid-3m-pct.c:
  15  *
  16  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  17  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  18  *  Copyright (c) 2010      Canonical, Ltd.
  19  *
  20  */
  21
  22 /*
  23  * This program is free software; you can redistribute it and/or modify it
  24  * under the terms of the GNU General Public License as published by the Free
  25  * Software Foundation; either version 2 of the License, or (at your option)
  26  * any later version.
  27  */
  28
  29 #include <linux/device.h>
  30 #include <linux/hid.h>
  31 #include <linux/module.h>
  32 #include <linux/slab.h>
  33 #include <linux/usb.h>
  34 #include <linux/input/mt.h>
  35 #include "usbhid/usbhid.h"
  36
  37
  38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  40 MODULE_DESCRIPTION("HID multitouch panels");
  41 MODULE_LICENSE("GPL");
  42
  43 #include "hid-ids.h"
  44
  45 /* quirks to control the device */
  46 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  47 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  48 #define MT_QUIRK_CYPRESS                (1 << 2)
  49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  50 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  51 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  52 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  54
  55 struct mt_slot {
  56         __s32 x, y, p, w, h;
  57         __s32 contactid;        /* the device ContactID assigned to this slot */
  58         bool touch_state;       /* is the touch valid? */
  59         bool seen_in_this_frame;/* has this slot been updated */
  60 };
  61
  62 struct mt_class {
  63         __s32 name;     /* MT_CLS */
  64         __s32 quirks;
  65         __s32 sn_move;  /* Signal/noise ratio for move events */
  66         __s32 sn_width; /* Signal/noise ratio for width events */
  67         __s32 sn_height;        /* Signal/noise ratio for height events */
  68         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  69         __u8 maxcontacts;
  70         bool is_indirect;       /* true for touchpads */
  71 };
  72
  73 struct mt_fields {
  74         unsigned usages[HID_MAX_FIELDS];
  75         unsigned int length;
  76 };
  77
  78 struct mt_device {
  79         struct mt_slot curdata; /* placeholder of incoming data */
  80         struct mt_class mtclass;        /* our mt device class */
  81         struct mt_fields *fields;       /* temporary placeholder for storing the
  82                                            multitouch fields */
  83         unsigned last_field_index;      /* last field index of the report */
  84         unsigned last_slot_field;       /* the last field of a slot */
  85         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
  86         __s8 inputmode_index;   /* InputMode HID feature index in the report */
  87         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
  88                                    -1 if non-existent */
  89         __u8 num_received;      /* how many contacts we received */
  90         __u8 num_expected;      /* expected last contact index */
  91         __u8 maxcontacts;
  92         __u8 touches_by_report; /* how many touches are present in one report:
  93                                 * 1 means we should use a serial protocol
  94                                 * > 1 means hybrid (multitouch) protocol */
  95         bool curvalid;          /* is the current contact valid? */
  96         struct mt_slot *slots;
  97 };
  98
  99 /* classes of device behavior */
 100 #define MT_CLS_DEFAULT                          0x0001
 101
 102 #define MT_CLS_SERIAL                           0x0002
 103 #define MT_CLS_CONFIDENCE                       0x0003
 104 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 105 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 106 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 107 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 108 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 109 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 110
 111 /* vendor specific classes */
 112 #define MT_CLS_3M                               0x0101
 113 #define MT_CLS_CYPRESS                          0x0102
 114 #define MT_CLS_EGALAX                           0x0103
 115 #define MT_CLS_EGALAX_SERIAL                    0x0104
 116 #define MT_CLS_TOPSEED                          0x0105
 117 #define MT_CLS_PANASONIC                        0x0106
 118 #define MT_CLS_GENERALTOUCH_TWOFINGERS          0x0107
 119 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS      0x0108
 120
 121 #define MT_DEFAULT_MAXCONTACT   10
 122
 123 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 124 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 125
 126 /*
 127  * these device-dependent functions determine what slot corresponds
 128  * to a valid contact that was just read.
 129  */
 130
 131 static int cypress_compute_slot(struct mt_device *td)
 132 {
 133         if (td->curdata.contactid != 0 || td->num_received == 0)
 134                 return td->curdata.contactid;
 135         else
 136                 return -1;
 137 }
 138
 139 static int find_slot_from_contactid(struct mt_device *td)
 140 {
 141         int i;
 142         for (i = 0; i < td->maxcontacts; ++i) {
 143                 if (td->slots[i].contactid == td->curdata.contactid &&
 144                         td->slots[i].touch_state)
 145                         return i;
 146         }
 147         for (i = 0; i < td->maxcontacts; ++i) {
 148                 if (!td->slots[i].seen_in_this_frame &&
 149                         !td->slots[i].touch_state)
 150                         return i;
 151         }
 152         /* should not occurs. If this happens that means
 153          * that the device sent more touches that it says
 154          * in the report descriptor. It is ignored then. */
 155         return -1;
 156 }
 157
 158 static struct mt_class mt_classes[] = {
 159         { .name = MT_CLS_DEFAULT,
 160                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 161         { .name = MT_CLS_SERIAL,
 162                 .quirks = MT_QUIRK_ALWAYS_VALID},
 163         { .name = MT_CLS_CONFIDENCE,
 164                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 165         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 166                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 167                         MT_QUIRK_SLOT_IS_CONTACTID },
 168         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 169                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 170                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 171         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 172                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 173                         MT_QUIRK_SLOT_IS_CONTACTID,
 174                 .maxcontacts = 2 },
 175         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 176                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 177                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 178                 .maxcontacts = 2 },
 179         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 180                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 181                         MT_QUIRK_SLOT_IS_CONTACTID,
 182                 .maxcontacts = 2 },
 183         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 184                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 185                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 186
 187         /*
 188          * vendor specific classes
 189          */
 190         { .name = MT_CLS_3M,
 191                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 192                         MT_QUIRK_SLOT_IS_CONTACTID,
 193                 .sn_move = 2048,
 194                 .sn_width = 128,
 195                 .sn_height = 128 },
 196         { .name = MT_CLS_CYPRESS,
 197                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 198                         MT_QUIRK_CYPRESS,
 199                 .maxcontacts = 10 },
 200         { .name = MT_CLS_EGALAX,
 201                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 202                         MT_QUIRK_VALID_IS_INRANGE,
 203                 .sn_move = 4096,
 204                 .sn_pressure = 32,
 205         },
 206         { .name = MT_CLS_EGALAX_SERIAL,
 207                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 208                         MT_QUIRK_ALWAYS_VALID,
 209                 .sn_move = 4096,
 210                 .sn_pressure = 32,
 211         },
 212         { .name = MT_CLS_TOPSEED,
 213                 .quirks = MT_QUIRK_ALWAYS_VALID,
 214                 .is_indirect = true,
 215                 .maxcontacts = 2,
 216         },
 217         { .name = MT_CLS_PANASONIC,
 218                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 219                 .maxcontacts = 4 },
 220         { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
 221                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 222                         MT_QUIRK_VALID_IS_INRANGE |
 223                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 224                 .maxcontacts = 2
 225         },
 226         { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 227                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 228                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 229                 .maxcontacts = 10
 230         },
 231
 232         { }
 233 };
 234
 235 static ssize_t mt_show_quirks(struct device *dev,
 236                            struct device_attribute *attr,
 237                            char *buf)
 238 {
 239         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 240         struct mt_device *td = hid_get_drvdata(hdev);
 241
 242         return sprintf(buf, "%u\n", td->mtclass.quirks);
 243 }
 244
 245 static ssize_t mt_set_quirks(struct device *dev,
 246                           struct device_attribute *attr,
 247                           const char *buf, size_t count)
 248 {
 249         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 250         struct mt_device *td = hid_get_drvdata(hdev);
 251
 252         unsigned long val;
 253
 254         if (kstrtoul(buf, 0, &val))
 255                 return -EINVAL;
 256
 257         td->mtclass.quirks = val;
 258
 259         return count;
 260 }
 261
 262 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 263
 264 static struct attribute *sysfs_attrs[] = {
 265         &dev_attr_quirks.attr,
 266         NULL
 267 };
 268
 269 static struct attribute_group mt_attribute_group = {
 270         .attrs = sysfs_attrs
 271 };
 272
 273 static void mt_feature_mapping(struct hid_device *hdev,
 274                 struct hid_field *field, struct hid_usage *usage)
 275 {
 276         struct mt_device *td = hid_get_drvdata(hdev);
 277         int i;
 278
 279         switch (usage->hid) {
 280         case HID_DG_INPUTMODE:
 281                 td->inputmode = field->report->id;
 282                 td->inputmode_index = 0; /* has to be updated below */
 283
 284                 for (i=0; i < field->maxusage; i++) {
 285                         if (field->usage[i].hid == usage->hid) {
 286                                 td->inputmode_index = i;
 287                                 break;
 288                         }
 289                 }
 290
 291                 break;
 292         case HID_DG_CONTACTMAX:
 293                 td->maxcontact_report_id = field->report->id;
 294                 td->maxcontacts = field->value[0];
 295                 if (td->mtclass.maxcontacts)
 296                         /* check if the maxcontacts is given by the class */
 297                         td->maxcontacts = td->mtclass.maxcontacts;
 298
 299                 break;
 300         }
 301 }
 302
 303 static void set_abs(struct input_dev *input, unsigned int code,
 304                 struct hid_field *field, int snratio)
 305 {
 306         int fmin = field->logical_minimum;
 307         int fmax = field->logical_maximum;
 308         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 309         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 310 }
 311
 312 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 313                 struct hid_input *hi)
 314 {
 315         struct mt_fields *f = td->fields;
 316
 317         if (f->length >= HID_MAX_FIELDS)
 318                 return;
 319
 320         f->usages[f->length++] = usage->hid;
 321 }
 322
 323 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 324                 struct hid_field *field, struct hid_usage *usage,
 325                 unsigned long **bit, int *max)
 326 {
 327         struct mt_device *td = hid_get_drvdata(hdev);
 328         struct mt_class *cls = &td->mtclass;
 329         int code;
 330
 331         /* Only map fields from TouchScreen or TouchPad collections.
 332         * We need to ignore fields that belong to other collections
 333         * such as Mouse that might have the same GenericDesktop usages. */
 334         if (field->application == HID_DG_TOUCHSCREEN)
 335                 set_bit(INPUT_PROP_DIRECT, hi->input->propbit);
 336         else if (field->application != HID_DG_TOUCHPAD)
 337                 return 0;
 338
 339         /* In case of an indirect device (touchpad), we need to add
 340          * specific BTN_TOOL_* to be handled by the synaptics xorg
 341          * driver.
 342          * We also consider that touchscreens providing buttons are touchpads.
 343          */
 344         if (field->application == HID_DG_TOUCHPAD ||
 345             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON ||
 346             cls->is_indirect) {
 347                 set_bit(INPUT_PROP_POINTER, hi->input->propbit);
 348                 set_bit(BTN_TOOL_FINGER, hi->input->keybit);
 349                 set_bit(BTN_TOOL_DOUBLETAP, hi->input->keybit);
 350                 set_bit(BTN_TOOL_TRIPLETAP, hi->input->keybit);
 351                 set_bit(BTN_TOOL_QUADTAP, hi->input->keybit);
 352         }
 353
 354         /* eGalax devices provide a Digitizer.Stylus input which overrides
 355          * the correct Digitizers.Finger X/Y ranges.
 356          * Let's just ignore this input. */
 357         if (field->physical == HID_DG_STYLUS)
 358                 return -1;
 359
 360         switch (usage->hid & HID_USAGE_PAGE) {
 361
 362         case HID_UP_GENDESK:
 363                 switch (usage->hid) {
 364                 case HID_GD_X:
 365                         hid_map_usage(hi, usage, bit, max,
 366                                         EV_ABS, ABS_MT_POSITION_X);
 367                         set_abs(hi->input, ABS_MT_POSITION_X, field,
 368                                 cls->sn_move);
 369                         /* touchscreen emulation */
 370                         set_abs(hi->input, ABS_X, field, cls->sn_move);
 371                         mt_store_field(usage, td, hi);
 372                         td->last_field_index = field->index;
 373                         return 1;
 374                 case HID_GD_Y:
 375                         hid_map_usage(hi, usage, bit, max,
 376                                         EV_ABS, ABS_MT_POSITION_Y);
 377                         set_abs(hi->input, ABS_MT_POSITION_Y, field,
 378                                 cls->sn_move);
 379                         /* touchscreen emulation */
 380                         set_abs(hi->input, ABS_Y, field, cls->sn_move);
 381                         mt_store_field(usage, td, hi);
 382                         td->last_field_index = field->index;
 383                         return 1;
 384                 }
 385                 return 0;
 386
 387         case HID_UP_DIGITIZER:
 388                 switch (usage->hid) {
 389                 case HID_DG_INRANGE:
 390                         mt_store_field(usage, td, hi);
 391                         td->last_field_index = field->index;
 392                         return 1;
 393                 case HID_DG_CONFIDENCE:
 394                         mt_store_field(usage, td, hi);
 395                         td->last_field_index = field->index;
 396                         return 1;
 397                 case HID_DG_TIPSWITCH:
 398                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 399                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 400                         mt_store_field(usage, td, hi);
 401                         td->last_field_index = field->index;
 402                         return 1;
 403                 case HID_DG_CONTACTID:
 404                         if (!td->maxcontacts)
 405                                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 406                         input_mt_init_slots(hi->input, td->maxcontacts);
 407                         mt_store_field(usage, td, hi);
 408                         td->last_field_index = field->index;
 409                         td->touches_by_report++;
 410                         return 1;
 411                 case HID_DG_WIDTH:
 412                         hid_map_usage(hi, usage, bit, max,
 413                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 414                         set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 415                                 cls->sn_width);
 416                         mt_store_field(usage, td, hi);
 417                         td->last_field_index = field->index;
 418                         return 1;
 419                 case HID_DG_HEIGHT:
 420                         hid_map_usage(hi, usage, bit, max,
 421                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 422                         set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 423                                 cls->sn_height);
 424                         input_set_abs_params(hi->input,
 425                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 426                         mt_store_field(usage, td, hi);
 427                         td->last_field_index = field->index;
 428                         return 1;
 429                 case HID_DG_TIPPRESSURE:
 430                         hid_map_usage(hi, usage, bit, max,
 431                                         EV_ABS, ABS_MT_PRESSURE);
 432                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 433                                 cls->sn_pressure);
 434                         /* touchscreen emulation */
 435                         set_abs(hi->input, ABS_PRESSURE, field,
 436                                 cls->sn_pressure);
 437                         mt_store_field(usage, td, hi);
 438                         td->last_field_index = field->index;
 439                         return 1;
 440                 case HID_DG_CONTACTCOUNT:
 441                         td->last_field_index = field->index;
 442                         return 1;
 443                 case HID_DG_CONTACTMAX:
 444                         /* we don't set td->last_slot_field as contactcount and
 445                          * contact max are global to the report */
 446                         td->last_field_index = field->index;
 447                         return -1;
 448                 }
 449                 case HID_DG_TOUCH:
 450                         /* Legacy devices use TIPSWITCH and not TOUCH.
 451                          * Let's just ignore this field. */
 452                         return -1;
 453                 /* let hid-input decide for the others */
 454                 return 0;
 455
 456         case HID_UP_BUTTON:
 457                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 458                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 459                 input_set_capability(hi->input, EV_KEY, code);
 460                 return 1;
 461
 462         case 0xff000000:
 463                 /* we do not want to map these: no input-oriented meaning */
 464                 return -1;
 465         }
 466
 467         return 0;
 468 }
 469
 470 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 471                 struct hid_field *field, struct hid_usage *usage,
 472                 unsigned long **bit, int *max)
 473 {
 474         if (usage->type == EV_KEY || usage->type == EV_ABS)
 475                 set_bit(usage->type, hi->input->evbit);
 476
 477         return -1;
 478 }
 479
 480 static int mt_compute_slot(struct mt_device *td)
 481 {
 482         __s32 quirks = td->mtclass.quirks;
 483
 484         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 485                 return td->curdata.contactid;
 486
 487         if (quirks & MT_QUIRK_CYPRESS)
 488                 return cypress_compute_slot(td);
 489
 490         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 491                 return td->num_received;
 492
 493         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 494                 return td->curdata.contactid - 1;
 495
 496         return find_slot_from_contactid(td);
 497 }
 498
 499 /*
 500  * this function is called when a whole contact has been processed,
 501  * so that it can assign it to a slot and store the data there
 502  */
 503 static void mt_complete_slot(struct mt_device *td)
 504 {
 505         td->curdata.seen_in_this_frame = true;
 506         if (td->curvalid) {
 507                 int slotnum = mt_compute_slot(td);
 508
 509                 if (slotnum >= 0 && slotnum < td->maxcontacts)
 510                         td->slots[slotnum] = td->curdata;
 511         }
 512         td->num_received++;
 513 }
 514
 515
 516 /*
 517  * this function is called when a whole packet has been received and processed,
 518  * so that it can decide what to send to the input layer.
 519  */
 520 static void mt_emit_event(struct mt_device *td, struct input_dev *input)
 521 {
 522         int i;
 523
 524         for (i = 0; i < td->maxcontacts; ++i) {
 525                 struct mt_slot *s = &(td->slots[i]);
 526                 if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) &&
 527                         !s->seen_in_this_frame) {
 528                         s->touch_state = false;
 529                 }
 530
 531                 input_mt_slot(input, i);
 532                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 533                         s->touch_state);
 534                 if (s->touch_state) {
 535                         /* this finger is on the screen */
 536                         int wide = (s->w > s->h);
 537                         /* divided by two to match visual scale of touch */
 538                         int major = max(s->w, s->h) >> 1;
 539                         int minor = min(s->w, s->h) >> 1;
 540
 541                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 542                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 543                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 544                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 545                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 546                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 547                 }
 548                 s->seen_in_this_frame = false;
 549
 550         }
 551
 552         input_mt_report_pointer_emulation(input, true);
 553         input_sync(input);
 554         td->num_received = 0;
 555 }
 556
 557
 558
 559 static int mt_event(struct hid_device *hid, struct hid_field *field,
 560                                 struct hid_usage *usage, __s32 value)
 561 {
 562         struct mt_device *td = hid_get_drvdata(hid);
 563         __s32 quirks = td->mtclass.quirks;
 564
 565         if (hid->claimed & HID_CLAIMED_INPUT && td->slots) {
 566                 switch (usage->hid) {
 567                 case HID_DG_INRANGE:
 568                         if (quirks & MT_QUIRK_ALWAYS_VALID)
 569                                 td->curvalid = true;
 570                         else if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 571                                 td->curvalid = value;
 572                         break;
 573                 case HID_DG_TIPSWITCH:
 574                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 575                                 td->curvalid = value;
 576                         td->curdata.touch_state = value;
 577                         break;
 578                 case HID_DG_CONFIDENCE:
 579                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 580                                 td->curvalid = value;
 581                         break;
 582                 case HID_DG_CONTACTID:
 583                         td->curdata.contactid = value;
 584                         break;
 585                 case HID_DG_TIPPRESSURE:
 586                         td->curdata.p = value;
 587                         break;
 588                 case HID_GD_X:
 589                         td->curdata.x = value;
 590                         break;
 591                 case HID_GD_Y:
 592                         td->curdata.y = value;
 593                         break;
 594                 case HID_DG_WIDTH:
 595                         td->curdata.w = value;
 596                         break;
 597                 case HID_DG_HEIGHT:
 598                         td->curdata.h = value;
 599                         break;
 600                 case HID_DG_CONTACTCOUNT:
 601                         /*
 602                          * Includes multi-packet support where subsequent
 603                          * packets are sent with zero contactcount.
 604                          */
 605                         if (value)
 606                                 td->num_expected = value;
 607                         break;
 608                 case HID_DG_TOUCH:
 609                         /* do nothing */
 610                         break;
 611
 612                 default:
 613                         /* fallback to the generic hidinput handling */
 614                         return 0;
 615                 }
 616
 617                 if (usage->hid == td->last_slot_field)
 618                         mt_complete_slot(td);
 619
 620                 if (field->index == td->last_field_index
 621                         && td->num_received >= td->num_expected)
 622                         mt_emit_event(td, field->hidinput->input);
 623
 624         }
 625
 626         /* we have handled the hidinput part, now remains hiddev */
 627         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 628                 hid->hiddev_hid_event(hid, field, usage, value);
 629
 630         return 1;
 631 }
 632
 633 static void mt_set_input_mode(struct hid_device *hdev)
 634 {
 635         struct mt_device *td = hid_get_drvdata(hdev);
 636         struct hid_report *r;
 637         struct hid_report_enum *re;
 638
 639         if (td->inputmode < 0)
 640                 return;
 641
 642         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 643         r = re->report_id_hash[td->inputmode];
 644         if (r) {
 645                 r->field[0]->value[td->inputmode_index] = 0x02;
 646                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 647         }
 648 }
 649
 650 static void mt_set_maxcontacts(struct hid_device *hdev)
 651 {
 652         struct mt_device *td = hid_get_drvdata(hdev);
 653         struct hid_report *r;
 654         struct hid_report_enum *re;
 655         int fieldmax, max;
 656
 657         if (td->maxcontact_report_id < 0)
 658                 return;
 659
 660         if (!td->mtclass.maxcontacts)
 661                 return;
 662
 663         re = &hdev->report_enum[HID_FEATURE_REPORT];
 664         r = re->report_id_hash[td->maxcontact_report_id];
 665         if (r) {
 666                 max = td->mtclass.maxcontacts;
 667                 fieldmax = r->field[0]->logical_maximum;
 668                 max = min(fieldmax, max);
 669                 if (r->field[0]->value[0] != max) {
 670                         r->field[0]->value[0] = max;
 671                         usbhid_submit_report(hdev, r, USB_DIR_OUT);
 672                 }
 673         }
 674 }
 675
 676 static void mt_post_parse_default_settings(struct mt_device *td)
 677 {
 678         __s32 quirks = td->mtclass.quirks;
 679
 680         /* unknown serial device needs special quirks */
 681         if (td->touches_by_report == 1) {
 682                 quirks |= MT_QUIRK_ALWAYS_VALID;
 683                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 684                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 685                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 686         }
 687
 688         td->mtclass.quirks = quirks;
 689 }
 690
 691 static void mt_post_parse(struct mt_device *td)
 692 {
 693         struct mt_fields *f = td->fields;
 694
 695         if (td->touches_by_report > 0) {
 696                 int field_count_per_touch = f->length / td->touches_by_report;
 697                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 698         }
 699 }
 700
 701 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 702 {
 703         int ret, i;
 704         struct mt_device *td;
 705         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 706
 707         for (i = 0; mt_classes[i].name ; i++) {
 708                 if (id->driver_data == mt_classes[i].name) {
 709                         mtclass = &(mt_classes[i]);
 710                         break;
 711                 }
 712         }
 713
 714         /* This allows the driver to correctly support devices
 715          * that emit events over several HID messages.
 716          */
 717         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 718
 719         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 720         if (!td) {
 721                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 722                 return -ENOMEM;
 723         }
 724         td->mtclass = *mtclass;
 725         td->inputmode = -1;
 726         td->maxcontact_report_id = -1;
 727         hid_set_drvdata(hdev, td);
 728
 729         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 730         if (!td->fields) {
 731                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 732                 ret = -ENOMEM;
 733                 goto fail;
 734         }
 735
 736         ret = hid_parse(hdev);
 737         if (ret != 0)
 738                 goto fail;
 739
 740         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 741         if (ret)
 742                 goto fail;
 743
 744         mt_post_parse(td);
 745
 746         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 747                 mt_post_parse_default_settings(td);
 748
 749         td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot),
 750                                 GFP_KERNEL);
 751         if (!td->slots) {
 752                 dev_err(&hdev->dev, "cannot allocate multitouch slots\n");
 753                 hid_hw_stop(hdev);
 754                 ret = -ENOMEM;
 755                 goto fail;
 756         }
 757
 758         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 759
 760         mt_set_maxcontacts(hdev);
 761         mt_set_input_mode(hdev);
 762
 763         kfree(td->fields);
 764         td->fields = NULL;
 765
 766         return 0;
 767
 768 fail:
 769         kfree(td->fields);
 770         kfree(td);
 771         return ret;
 772 }
 773
 774 #ifdef CONFIG_PM
 775 static int mt_reset_resume(struct hid_device *hdev)
 776 {
 777         mt_set_maxcontacts(hdev);
 778         mt_set_input_mode(hdev);
 779         return 0;
 780 }
 781
 782 static int mt_resume(struct hid_device *hdev)
 783 {
 784         struct usb_interface *intf;
 785         struct usb_host_interface *interface;
 786         struct usb_device *dev;
 787
 788         if (hdev->bus != BUS_USB)
 789                 return 0;
 790
 791         intf = to_usb_interface(hdev->dev.parent);
 792         interface = intf->cur_altsetting;
 793         dev = hid_to_usb_dev(hdev);
 794
 795         /* Some Elan legacy devices require SET_IDLE to be set on resume.
 796          * It should be safe to send it to other devices too.
 797          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
 798
 799         usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 800                         HID_REQ_SET_IDLE,
 801                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 802                         0, interface->desc.bInterfaceNumber,
 803                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 804
 805         return 0;
 806 }
 807 #endif
 808
 809 static void mt_remove(struct hid_device *hdev)
 810 {
 811         struct mt_device *td = hid_get_drvdata(hdev);
 812         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 813         hid_hw_stop(hdev);
 814         kfree(td->slots);
 815         kfree(td);
 816         hid_set_drvdata(hdev, NULL);
 817 }
 818
 819 static const struct hid_device_id mt_devices[] = {
 820
 821         /* 3M panels */
 822         { .driver_data = MT_CLS_3M,
 823                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 824                         USB_DEVICE_ID_3M1968) },
 825         { .driver_data = MT_CLS_3M,
 826                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 827                         USB_DEVICE_ID_3M2256) },
 828         { .driver_data = MT_CLS_3M,
 829                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 830                         USB_DEVICE_ID_3M3266) },
 831
 832         /* ActionStar panels */
 833         { .driver_data = MT_CLS_DEFAULT,
 834                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 835                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 836
 837         /* Atmel panels */
 838         { .driver_data = MT_CLS_SERIAL,
 839                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 840                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 841         { .driver_data = MT_CLS_SERIAL,
 842                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 843                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 844
 845         /* Baanto multitouch devices */
 846         { .driver_data = MT_CLS_DEFAULT,
 847                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 848                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 849         /* Cando panels */
 850         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 851                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 852                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 853         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 854                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 855                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 856         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 857                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 858                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 859         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 860                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 861                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 862
 863         /* Chunghwa Telecom touch panels */
 864         {  .driver_data = MT_CLS_DEFAULT,
 865                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 866                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 867
 868         /* CVTouch panels */
 869         { .driver_data = MT_CLS_DEFAULT,
 870                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 871                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 872
 873         /* Cypress panel */
 874         { .driver_data = MT_CLS_CYPRESS,
 875                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 876                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 877
 878         /* eGalax devices (resistive) */
 879         { .driver_data = MT_CLS_EGALAX,
 880                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 881                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
 882         { .driver_data = MT_CLS_EGALAX,
 883                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 884                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
 885
 886         /* eGalax devices (capacitive) */
 887         { .driver_data = MT_CLS_EGALAX,
 888                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 889                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
 890         { .driver_data = MT_CLS_EGALAX_SERIAL,
 891                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 892                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
 893         { .driver_data = MT_CLS_EGALAX_SERIAL,
 894                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 895                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
 896         { .driver_data = MT_CLS_EGALAX_SERIAL,
 897                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 898                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 899         { .driver_data = MT_CLS_EGALAX_SERIAL,
 900                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 901                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
 902         { .driver_data = MT_CLS_EGALAX,
 903                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 904                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
 905         { .driver_data = MT_CLS_EGALAX_SERIAL,
 906                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 907                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
 908         { .driver_data = MT_CLS_EGALAX,
 909                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 910                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
 911         { .driver_data = MT_CLS_EGALAX_SERIAL,
 912                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 913                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
 914         { .driver_data = MT_CLS_EGALAX,
 915                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 916                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
 917         { .driver_data = MT_CLS_EGALAX,
 918                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 919                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
 920         { .driver_data = MT_CLS_EGALAX_SERIAL,
 921                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 922                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
 923         { .driver_data = MT_CLS_EGALAX_SERIAL,
 924                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 925                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
 926         { .driver_data = MT_CLS_EGALAX_SERIAL,
 927                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 928                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
 929         { .driver_data = MT_CLS_EGALAX,
 930                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 931                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
 932         { .driver_data = MT_CLS_EGALAX,
 933                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 934                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
 935         { .driver_data = MT_CLS_EGALAX,
 936                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
 937                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
 938
 939         /* Elo TouchSystems IntelliTouch Plus panel */
 940         { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
 941                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
 942                         USB_DEVICE_ID_ELO_TS2515) },
 943
 944         /* GeneralTouch panel */
 945         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
 946                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 947                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
 948         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 949                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
 950                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
 951
 952         /* Gametel game controller */
 953         { .driver_data = MT_CLS_DEFAULT,
 954                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
 955                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
 956
 957         /* GoodTouch panels */
 958         { .driver_data = MT_CLS_DEFAULT,
 959                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
 960                         USB_DEVICE_ID_GOODTOUCH_000f) },
 961
 962         /* Hanvon panels */
 963         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 964                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
 965                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
 966
 967         /* Ideacom panel */
 968         { .driver_data = MT_CLS_SERIAL,
 969                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 970                         USB_DEVICE_ID_IDEACOM_IDC6650) },
 971         { .driver_data = MT_CLS_SERIAL,
 972                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
 973                         USB_DEVICE_ID_IDEACOM_IDC6651) },
 974
 975         /* Ilitek dual touch panel */
 976         {  .driver_data = MT_CLS_DEFAULT,
 977                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
 978                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 979
 980         /* IRTOUCH panels */
 981         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
 982                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 983                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 984
 985         /* LG Display panels */
 986         { .driver_data = MT_CLS_DEFAULT,
 987                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
 988                         USB_DEVICE_ID_LG_MULTITOUCH) },
 989
 990         /* Lumio panels */
 991         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 992                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 993                         USB_DEVICE_ID_CRYSTALTOUCH) },
 994         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 995                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
 996                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
 997
 998         /* MosArt panels */
 999         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1000                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1001                         USB_DEVICE_ID_ASUS_T91MT)},
1002         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1003                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1004                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1005         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1006                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1007                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1008
1009         /* Panasonic panels */
1010         { .driver_data = MT_CLS_PANASONIC,
1011                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1012                         USB_DEVICE_ID_PANABOARD_UBT780) },
1013         { .driver_data = MT_CLS_PANASONIC,
1014                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1015                         USB_DEVICE_ID_PANABOARD_UBT880) },
1016
1017         /* Novatek Panel */
1018         { .driver_data = MT_CLS_DEFAULT,
1019                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1020                         USB_DEVICE_ID_NOVATEK_PCT) },
1021
1022         /* PenMount panels */
1023         { .driver_data = MT_CLS_CONFIDENCE,
1024                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1025                         USB_DEVICE_ID_PENMOUNT_PCI) },
1026
1027         /* PixArt optical touch screen */
1028         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1029                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1030                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1031         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1032                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1033                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1034         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1035                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1036                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1037
1038         /* PixCir-based panels */
1039         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1040                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1041                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1042         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1043                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1044                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1045
1046         /* Quanta-based panels */
1047         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1048                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1049                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1050         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1051                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1052                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1053         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1054                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1055                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1056
1057         /* Stantum panels */
1058         { .driver_data = MT_CLS_CONFIDENCE,
1059                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1060                         USB_DEVICE_ID_MTP)},
1061         { .driver_data = MT_CLS_CONFIDENCE,
1062                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1063                         USB_DEVICE_ID_MTP_STM)},
1064         { .driver_data = MT_CLS_CONFIDENCE,
1065                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1066                         USB_DEVICE_ID_MTP_SITRONIX)},
1067
1068         /* TopSeed panels */
1069         { .driver_data = MT_CLS_TOPSEED,
1070                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1071                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1072
1073         /* Touch International panels */
1074         { .driver_data = MT_CLS_DEFAULT,
1075                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1076                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1077
1078         /* Unitec panels */
1079         { .driver_data = MT_CLS_DEFAULT,
1080                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1081                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1082         { .driver_data = MT_CLS_DEFAULT,
1083                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1084                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1085         /* XAT */
1086         { .driver_data = MT_CLS_DEFAULT,
1087                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1088                         USB_DEVICE_ID_XAT_CSR) },
1089
1090         /* Xiroku */
1091         { .driver_data = MT_CLS_DEFAULT,
1092                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1093                         USB_DEVICE_ID_XIROKU_SPX) },
1094         { .driver_data = MT_CLS_DEFAULT,
1095                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1096                         USB_DEVICE_ID_XIROKU_MPX) },
1097         { .driver_data = MT_CLS_DEFAULT,
1098                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1099                         USB_DEVICE_ID_XIROKU_CSR) },
1100         { .driver_data = MT_CLS_DEFAULT,
1101                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1102                         USB_DEVICE_ID_XIROKU_SPX1) },
1103         { .driver_data = MT_CLS_DEFAULT,
1104                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1105                         USB_DEVICE_ID_XIROKU_MPX1) },
1106         { .driver_data = MT_CLS_DEFAULT,
1107                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1108                         USB_DEVICE_ID_XIROKU_CSR1) },
1109         { .driver_data = MT_CLS_DEFAULT,
1110                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1111                         USB_DEVICE_ID_XIROKU_SPX2) },
1112         { .driver_data = MT_CLS_DEFAULT,
1113                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1114                         USB_DEVICE_ID_XIROKU_MPX2) },
1115         { .driver_data = MT_CLS_DEFAULT,
1116                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1117                         USB_DEVICE_ID_XIROKU_CSR2) },
1118
1119         /* Zytronic panels */
1120         { .driver_data = MT_CLS_SERIAL,
1121                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1122                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1123
1124         /* Generic MT device */
1125         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1126         { }
1127 };
1128 MODULE_DEVICE_TABLE(hid, mt_devices);
1129
1130 static const struct hid_usage_id mt_grabbed_usages[] = {
1131         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1132         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1133 };
1134
1135 static struct hid_driver mt_driver = {
1136         .name = "hid-multitouch",
1137         .id_table = mt_devices,
1138         .probe = mt_probe,
1139         .remove = mt_remove,
1140         .input_mapping = mt_input_mapping,
1141         .input_mapped = mt_input_mapped,
1142         .feature_mapping = mt_feature_mapping,
1143         .usage_table = mt_grabbed_usages,
1144         .event = mt_event,
1145 #ifdef CONFIG_PM
1146         .reset_resume = mt_reset_resume,
1147         .resume = mt_resume,
1148 #endif
1149 };
1150
1151 static int __init mt_init(void)
1152 {
1153         return hid_register_driver(&mt_driver);
1154 }
1155
1156 static void __exit mt_exit(void)
1157 {
1158         hid_unregister_driver(&mt_driver);
1159 }
1160
1161 module_init(mt_init);
1162 module_exit(mt_exit);