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) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *  Copyright (c) 2012-2013 Red Hat, Inc
   8  *
   9  *  This code is partly based on hid-egalax.c:
  10  *
  11  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  12  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  13  *  Copyright (c) 2010 Canonical, Ltd.
  14  *
  15  *  This code is partly based on hid-3m-pct.c:
  16  *
  17  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  18  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  19  *  Copyright (c) 2010      Canonical, Ltd.
  20  *
  21  */
  22
  23 /*
  24  * This program is free software; you can redistribute it and/or modify it
  25  * under the terms of the GNU General Public License as published by the Free
  26  * Software Foundation; either version 2 of the License, or (at your option)
  27  * any later version.
  28  */
  29
  30 /*
  31  * This driver is regularly tested thanks to the tool hid-test[1].
  32  * This tool relies on hid-replay[2] and a database of hid devices[3].
  33  * Please run these regression tests before patching this module so that
  34  * your patch won't break existing known devices.
  35  *
  36  * [1] https://github.com/bentiss/hid-test
  37  * [2] https://github.com/bentiss/hid-replay
  38  * [3] https://github.com/bentiss/hid-devices
  39  */
  40
  41 #include <linux/device.h>
  42 #include <linux/hid.h>
  43 #include <linux/module.h>
  44 #include <linux/slab.h>
  45 #include <linux/usb.h>
  46 #include <linux/input/mt.h>
  47
  48
  49 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  50 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  51 MODULE_DESCRIPTION("HID multitouch panels");
  52 MODULE_LICENSE("GPL");
  53
  54 #include "hid-ids.h"
  55
  56 /* quirks to control the device */
  57 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  58 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  59 #define MT_QUIRK_CYPRESS                (1 << 2)
  60 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  61 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  62 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  63 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  64 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  65 #define MT_QUIRK_NO_AREA                (1 << 9)
  66 #define MT_QUIRK_IGNORE_DUPLICATES      (1 << 10)
  67 #define MT_QUIRK_HOVERING               (1 << 11)
  68 #define MT_QUIRK_CONTACT_CNT_ACCURATE   (1 << 12)
  69
  70 struct mt_slot {
  71         __s32 x, y, cx, cy, p, w, h;
  72         __s32 contactid;        /* the device ContactID assigned to this slot */
  73         bool touch_state;       /* is the touch valid? */
  74         bool inrange_state;     /* is the finger in proximity of the sensor? */
  75 };
  76
  77 struct mt_class {
  78         __s32 name;     /* MT_CLS */
  79         __s32 quirks;
  80         __s32 sn_move;  /* Signal/noise ratio for move events */
  81         __s32 sn_width; /* Signal/noise ratio for width events */
  82         __s32 sn_height;        /* Signal/noise ratio for height events */
  83         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  84         __u8 maxcontacts;
  85         bool is_indirect;       /* true for touchpads */
  86 };
  87
  88 struct mt_fields {
  89         unsigned usages[HID_MAX_FIELDS];
  90         unsigned int length;
  91 };
  92
  93 struct mt_device {
  94         struct mt_slot curdata; /* placeholder of incoming data */
  95         struct mt_class mtclass;        /* our mt device class */
  96         struct mt_fields *fields;       /* temporary placeholder for storing the
  97                                            multitouch fields */
  98         int cc_index;   /* contact count field index in the report */
  99         int cc_value_index;     /* contact count value index in the field */
 100         unsigned last_field_index;      /* last field index of the report */
 101         unsigned last_slot_field;       /* the last field of a slot */
 102         unsigned mt_report_id;  /* the report ID of the multitouch device */
 103         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
 104         __s8 inputmode_index;   /* InputMode HID feature index in the report */
 105         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
 106                                    -1 if non-existent */
 107         __u8 num_received;      /* how many contacts we received */
 108         __u8 num_expected;      /* expected last contact index */
 109         __u8 maxcontacts;
 110         __u8 touches_by_report; /* how many touches are present in one report:
 111                                 * 1 means we should use a serial protocol
 112                                 * > 1 means hybrid (multitouch) protocol */
 113         bool serial_maybe;      /* need to check for serial protocol */
 114         bool curvalid;          /* is the current contact valid? */
 115         unsigned mt_flags;      /* flags to pass to input-mt */
 116 };
 117
 118 /* classes of device behavior */
 119 #define MT_CLS_DEFAULT                          0x0001
 120
 121 #define MT_CLS_SERIAL                           0x0002
 122 #define MT_CLS_CONFIDENCE                       0x0003
 123 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 124 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 125 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 126 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 127 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 128 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 129 #define MT_CLS_NSMU                             0x000a
 130 #define MT_CLS_DUAL_CONTACT_NUMBER              0x0010
 131 #define MT_CLS_DUAL_CONTACT_ID                  0x0011
 132
 133 /* vendor specific classes */
 134 #define MT_CLS_3M                               0x0101
 135 #define MT_CLS_CYPRESS                          0x0102
 136 #define MT_CLS_EGALAX                           0x0103
 137 #define MT_CLS_EGALAX_SERIAL                    0x0104
 138 #define MT_CLS_TOPSEED                          0x0105
 139 #define MT_CLS_PANASONIC                        0x0106
 140 #define MT_CLS_FLATFROG                         0x0107
 141 #define MT_CLS_GENERALTOUCH_TWOFINGERS          0x0108
 142 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS      0x0109
 143
 144 #define MT_DEFAULT_MAXCONTACT   10
 145 #define MT_MAX_MAXCONTACT       250
 146
 147 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 148 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 149
 150 /*
 151  * these device-dependent functions determine what slot corresponds
 152  * to a valid contact that was just read.
 153  */
 154
 155 static int cypress_compute_slot(struct mt_device *td)
 156 {
 157         if (td->curdata.contactid != 0 || td->num_received == 0)
 158                 return td->curdata.contactid;
 159         else
 160                 return -1;
 161 }
 162
 163 static struct mt_class mt_classes[] = {
 164         { .name = MT_CLS_DEFAULT,
 165                 .quirks = MT_QUIRK_ALWAYS_VALID |
 166                         MT_QUIRK_CONTACT_CNT_ACCURATE },
 167         { .name = MT_CLS_NSMU,
 168                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 169         { .name = MT_CLS_SERIAL,
 170                 .quirks = MT_QUIRK_ALWAYS_VALID},
 171         { .name = MT_CLS_CONFIDENCE,
 172                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 173         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 174                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 175                         MT_QUIRK_SLOT_IS_CONTACTID },
 176         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 177                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 178                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 179         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 180                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 181                         MT_QUIRK_SLOT_IS_CONTACTID,
 182                 .maxcontacts = 2 },
 183         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 184                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 185                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 186                 .maxcontacts = 2 },
 187         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 188                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 189                         MT_QUIRK_SLOT_IS_CONTACTID,
 190                 .maxcontacts = 2 },
 191         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 192                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 193                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 194         { .name = MT_CLS_DUAL_CONTACT_NUMBER,
 195                 .quirks = MT_QUIRK_ALWAYS_VALID |
 196                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 197                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 198                 .maxcontacts = 2 },
 199         { .name = MT_CLS_DUAL_CONTACT_ID,
 200                 .quirks = MT_QUIRK_ALWAYS_VALID |
 201                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 202                         MT_QUIRK_SLOT_IS_CONTACTID,
 203                 .maxcontacts = 2 },
 204
 205         /*
 206          * vendor specific classes
 207          */
 208         { .name = MT_CLS_3M,
 209                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 210                         MT_QUIRK_SLOT_IS_CONTACTID,
 211                 .sn_move = 2048,
 212                 .sn_width = 128,
 213                 .sn_height = 128,
 214                 .maxcontacts = 60,
 215         },
 216         { .name = MT_CLS_CYPRESS,
 217                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 218                         MT_QUIRK_CYPRESS,
 219                 .maxcontacts = 10 },
 220         { .name = MT_CLS_EGALAX,
 221                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 222                         MT_QUIRK_VALID_IS_INRANGE,
 223                 .sn_move = 4096,
 224                 .sn_pressure = 32,
 225         },
 226         { .name = MT_CLS_EGALAX_SERIAL,
 227                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 228                         MT_QUIRK_ALWAYS_VALID,
 229                 .sn_move = 4096,
 230                 .sn_pressure = 32,
 231         },
 232         { .name = MT_CLS_TOPSEED,
 233                 .quirks = MT_QUIRK_ALWAYS_VALID,
 234                 .is_indirect = true,
 235                 .maxcontacts = 2,
 236         },
 237         { .name = MT_CLS_PANASONIC,
 238                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 239                 .maxcontacts = 4 },
 240         { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
 241                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 242                         MT_QUIRK_VALID_IS_INRANGE |
 243                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 244                 .maxcontacts = 2
 245         },
 246         { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 247                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 248                         MT_QUIRK_SLOT_IS_CONTACTNUMBER
 249         },
 250
 251         { .name = MT_CLS_FLATFROG,
 252                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 253                         MT_QUIRK_NO_AREA,
 254                 .sn_move = 2048,
 255                 .maxcontacts = 40,
 256         },
 257         { }
 258 };
 259
 260 static ssize_t mt_show_quirks(struct device *dev,
 261                            struct device_attribute *attr,
 262                            char *buf)
 263 {
 264         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 265         struct mt_device *td = hid_get_drvdata(hdev);
 266
 267         return sprintf(buf, "%u\n", td->mtclass.quirks);
 268 }
 269
 270 static ssize_t mt_set_quirks(struct device *dev,
 271                           struct device_attribute *attr,
 272                           const char *buf, size_t count)
 273 {
 274         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 275         struct mt_device *td = hid_get_drvdata(hdev);
 276
 277         unsigned long val;
 278
 279         if (kstrtoul(buf, 0, &val))
 280                 return -EINVAL;
 281
 282         td->mtclass.quirks = val;
 283
 284         if (td->cc_index < 0)
 285                 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 286
 287         return count;
 288 }
 289
 290 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 291
 292 static struct attribute *sysfs_attrs[] = {
 293         &dev_attr_quirks.attr,
 294         NULL
 295 };
 296
 297 static struct attribute_group mt_attribute_group = {
 298         .attrs = sysfs_attrs
 299 };
 300
 301 static void mt_feature_mapping(struct hid_device *hdev,
 302                 struct hid_field *field, struct hid_usage *usage)
 303 {
 304         struct mt_device *td = hid_get_drvdata(hdev);
 305         int i;
 306
 307         switch (usage->hid) {
 308         case HID_DG_INPUTMODE:
 309                 td->inputmode = field->report->id;
 310                 td->inputmode_index = 0; /* has to be updated below */
 311
 312                 for (i=0; i < field->maxusage; i++) {
 313                         if (field->usage[i].hid == usage->hid) {
 314                                 td->inputmode_index = i;
 315                                 break;
 316                         }
 317                 }
 318
 319                 break;
 320         case HID_DG_CONTACTMAX:
 321                 td->maxcontact_report_id = field->report->id;
 322                 td->maxcontacts = field->value[0];
 323                 if (!td->maxcontacts &&
 324                     field->logical_maximum <= MT_MAX_MAXCONTACT)
 325                         td->maxcontacts = field->logical_maximum;
 326                 if (td->mtclass.maxcontacts)
 327                         /* check if the maxcontacts is given by the class */
 328                         td->maxcontacts = td->mtclass.maxcontacts;
 329
 330                 break;
 331         case 0xff0000c5:
 332                 if (field->report_count == 256 && field->report_size == 8) {
 333                         /* Win 8 devices need special quirks */
 334                         __s32 *quirks = &td->mtclass.quirks;
 335                         *quirks |= MT_QUIRK_ALWAYS_VALID;
 336                         *quirks |= MT_QUIRK_IGNORE_DUPLICATES;
 337                         *quirks |= MT_QUIRK_HOVERING;
 338                         *quirks |= MT_QUIRK_CONTACT_CNT_ACCURATE;
 339                         *quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 340                         *quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 341                         *quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 342                 }
 343                 break;
 344         }
 345 }
 346
 347 static void set_abs(struct input_dev *input, unsigned int code,
 348                 struct hid_field *field, int snratio)
 349 {
 350         int fmin = field->logical_minimum;
 351         int fmax = field->logical_maximum;
 352         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 353         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 354         input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
 355 }
 356
 357 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 358                 struct hid_input *hi)
 359 {
 360         struct mt_fields *f = td->fields;
 361
 362         if (f->length >= HID_MAX_FIELDS)
 363                 return;
 364
 365         f->usages[f->length++] = usage->hid;
 366 }
 367
 368 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 369                 struct hid_field *field, struct hid_usage *usage,
 370                 unsigned long **bit, int *max)
 371 {
 372         struct mt_device *td = hid_get_drvdata(hdev);
 373         struct mt_class *cls = &td->mtclass;
 374         int code;
 375         struct hid_usage *prev_usage = NULL;
 376
 377         /* Only map fields from TouchScreen or TouchPad collections.
 378         * We need to ignore fields that belong to other collections
 379         * such as Mouse that might have the same GenericDesktop usages. */
 380         if (field->application == HID_DG_TOUCHSCREEN)
 381                 td->mt_flags |= INPUT_MT_DIRECT;
 382         else if (field->application != HID_DG_TOUCHPAD)
 383                 return 0;
 384
 385         /*
 386          * Model touchscreens providing buttons as touchpads.
 387          */
 388         if (field->application == HID_DG_TOUCHPAD ||
 389             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
 390                 td->mt_flags |= INPUT_MT_POINTER;
 391
 392         /* eGalax devices provide a Digitizer.Stylus input which overrides
 393          * the correct Digitizers.Finger X/Y ranges.
 394          * Let's just ignore this input. */
 395         if (field->physical == HID_DG_STYLUS)
 396                 return -1;
 397
 398         if (usage->usage_index)
 399                 prev_usage = &field->usage[usage->usage_index - 1];
 400
 401         switch (usage->hid & HID_USAGE_PAGE) {
 402
 403         case HID_UP_GENDESK:
 404                 switch (usage->hid) {
 405                 case HID_GD_X:
 406                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 407                                 hid_map_usage(hi, usage, bit, max,
 408                                         EV_ABS, ABS_MT_TOOL_X);
 409                                 set_abs(hi->input, ABS_MT_TOOL_X, field,
 410                                         cls->sn_move);
 411                         } else {
 412                                 hid_map_usage(hi, usage, bit, max,
 413                                         EV_ABS, ABS_MT_POSITION_X);
 414                                 set_abs(hi->input, ABS_MT_POSITION_X, field,
 415                                         cls->sn_move);
 416                         }
 417
 418                         mt_store_field(usage, td, hi);
 419                         td->last_field_index = field->index;
 420                         return 1;
 421                 case HID_GD_Y:
 422                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 423                                 hid_map_usage(hi, usage, bit, max,
 424                                         EV_ABS, ABS_MT_TOOL_Y);
 425                                 set_abs(hi->input, ABS_MT_TOOL_Y, field,
 426                                         cls->sn_move);
 427                         } else {
 428                                 hid_map_usage(hi, usage, bit, max,
 429                                         EV_ABS, ABS_MT_POSITION_Y);
 430                                 set_abs(hi->input, ABS_MT_POSITION_Y, field,
 431                                         cls->sn_move);
 432                         }
 433
 434                         mt_store_field(usage, td, hi);
 435                         td->last_field_index = field->index;
 436                         return 1;
 437                 }
 438                 return 0;
 439
 440         case HID_UP_DIGITIZER:
 441                 switch (usage->hid) {
 442                 case HID_DG_INRANGE:
 443                         if (cls->quirks & MT_QUIRK_HOVERING) {
 444                                 hid_map_usage(hi, usage, bit, max,
 445                                         EV_ABS, ABS_MT_DISTANCE);
 446                                 input_set_abs_params(hi->input,
 447                                         ABS_MT_DISTANCE, 0, 1, 0, 0);
 448                         }
 449                         mt_store_field(usage, td, hi);
 450                         td->last_field_index = field->index;
 451                         return 1;
 452                 case HID_DG_CONFIDENCE:
 453                         mt_store_field(usage, td, hi);
 454                         td->last_field_index = field->index;
 455                         return 1;
 456                 case HID_DG_TIPSWITCH:
 457                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 458                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 459                         mt_store_field(usage, td, hi);
 460                         td->last_field_index = field->index;
 461                         return 1;
 462                 case HID_DG_CONTACTID:
 463                         mt_store_field(usage, td, hi);
 464                         td->last_field_index = field->index;
 465                         td->touches_by_report++;
 466                         td->mt_report_id = field->report->id;
 467                         return 1;
 468                 case HID_DG_WIDTH:
 469                         hid_map_usage(hi, usage, bit, max,
 470                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 471                         if (!(cls->quirks & MT_QUIRK_NO_AREA))
 472                                 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 473                                         cls->sn_width);
 474                         mt_store_field(usage, td, hi);
 475                         td->last_field_index = field->index;
 476                         return 1;
 477                 case HID_DG_HEIGHT:
 478                         hid_map_usage(hi, usage, bit, max,
 479                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 480                         if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
 481                                 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 482                                         cls->sn_height);
 483                                 input_set_abs_params(hi->input,
 484                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 485                         }
 486                         mt_store_field(usage, td, hi);
 487                         td->last_field_index = field->index;
 488                         return 1;
 489                 case HID_DG_TIPPRESSURE:
 490                         hid_map_usage(hi, usage, bit, max,
 491                                         EV_ABS, ABS_MT_PRESSURE);
 492                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 493                                 cls->sn_pressure);
 494                         mt_store_field(usage, td, hi);
 495                         td->last_field_index = field->index;
 496                         return 1;
 497                 case HID_DG_CONTACTCOUNT:
 498                         td->cc_index = field->index;
 499                         td->cc_value_index = usage->usage_index;
 500                         td->last_field_index = field->index;
 501                         return 1;
 502                 case HID_DG_CONTACTMAX:
 503                         /* we don't set td->last_slot_field as contactcount and
 504                          * contact max are global to the report */
 505                         td->last_field_index = field->index;
 506                         return -1;
 507                 case HID_DG_TOUCH:
 508                         /* Legacy devices use TIPSWITCH and not TOUCH.
 509                          * Let's just ignore this field. */
 510                         return -1;
 511                 }
 512                 /* let hid-input decide for the others */
 513                 return 0;
 514
 515         case HID_UP_BUTTON:
 516                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 517                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 518                 input_set_capability(hi->input, EV_KEY, code);
 519                 return 1;
 520
 521         case 0xff000000:
 522                 /* we do not want to map these: no input-oriented meaning */
 523                 return -1;
 524         }
 525
 526         return 0;
 527 }
 528
 529 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 530                 struct hid_field *field, struct hid_usage *usage,
 531                 unsigned long **bit, int *max)
 532 {
 533         if (usage->type == EV_KEY || usage->type == EV_ABS)
 534                 set_bit(usage->type, hi->input->evbit);
 535
 536         return -1;
 537 }
 538
 539 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
 540 {
 541         __s32 quirks = td->mtclass.quirks;
 542
 543         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 544                 return td->curdata.contactid;
 545
 546         if (quirks & MT_QUIRK_CYPRESS)
 547                 return cypress_compute_slot(td);
 548
 549         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 550                 return td->num_received;
 551
 552         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 553                 return td->curdata.contactid - 1;
 554
 555         return input_mt_get_slot_by_key(input, td->curdata.contactid);
 556 }
 557
 558 /*
 559  * this function is called when a whole contact has been processed,
 560  * so that it can assign it to a slot and store the data there
 561  */
 562 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
 563 {
 564         if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
 565             td->num_received >= td->num_expected)
 566                 return;
 567
 568         if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
 569                 int slotnum = mt_compute_slot(td, input);
 570                 struct mt_slot *s = &td->curdata;
 571                 struct input_mt *mt = input->mt;
 572
 573                 if (slotnum < 0 || slotnum >= td->maxcontacts)
 574                         return;
 575
 576                 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
 577                         struct input_mt_slot *slot = &mt->slots[slotnum];
 578                         if (input_mt_is_active(slot) &&
 579                             input_mt_is_used(mt, slot))
 580                                 return;
 581                 }
 582
 583                 input_mt_slot(input, slotnum);
 584                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 585                         s->touch_state || s->inrange_state);
 586                 if (s->touch_state || s->inrange_state) {
 587                         /* this finger is in proximity of the sensor */
 588                         int wide = (s->w > s->h);
 589                         /* divided by two to match visual scale of touch */
 590                         int major = max(s->w, s->h) >> 1;
 591                         int minor = min(s->w, s->h) >> 1;
 592
 593                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 594                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 595                         input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
 596                         input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
 597                         input_event(input, EV_ABS, ABS_MT_DISTANCE,
 598                                 !s->touch_state);
 599                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 600                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 601                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 602                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 603                 }
 604         }
 605
 606         td->num_received++;
 607 }
 608
 609 /*
 610  * this function is called when a whole packet has been received and processed,
 611  * so that it can decide what to send to the input layer.
 612  */
 613 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 614 {
 615         input_mt_sync_frame(input);
 616         input_sync(input);
 617         td->num_received = 0;
 618 }
 619
 620 static int mt_event(struct hid_device *hid, struct hid_field *field,
 621                                 struct hid_usage *usage, __s32 value)
 622 {
 623         /* we will handle the hidinput part later, now remains hiddev */
 624         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 625                 hid->hiddev_hid_event(hid, field, usage, value);
 626
 627         return 1;
 628 }
 629
 630 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
 631                                 struct hid_usage *usage, __s32 value)
 632 {
 633         struct mt_device *td = hid_get_drvdata(hid);
 634         __s32 quirks = td->mtclass.quirks;
 635         struct input_dev *input = field->hidinput->input;
 636
 637         if (hid->claimed & HID_CLAIMED_INPUT) {
 638                 switch (usage->hid) {
 639                 case HID_DG_INRANGE:
 640                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 641                                 td->curvalid = value;
 642                         if (quirks & MT_QUIRK_HOVERING)
 643                                 td->curdata.inrange_state = value;
 644                         break;
 645                 case HID_DG_TIPSWITCH:
 646                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 647                                 td->curvalid = value;
 648                         td->curdata.touch_state = value;
 649                         break;
 650                 case HID_DG_CONFIDENCE:
 651                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 652                                 td->curvalid = value;
 653                         break;
 654                 case HID_DG_CONTACTID:
 655                         td->curdata.contactid = value;
 656                         break;
 657                 case HID_DG_TIPPRESSURE:
 658                         td->curdata.p = value;
 659                         break;
 660                 case HID_GD_X:
 661                         if (usage->code == ABS_MT_TOOL_X)
 662                                 td->curdata.cx = value;
 663                         else
 664                                 td->curdata.x = value;
 665                         break;
 666                 case HID_GD_Y:
 667                         if (usage->code == ABS_MT_TOOL_Y)
 668                                 td->curdata.cy = value;
 669                         else
 670                                 td->curdata.y = value;
 671                         break;
 672                 case HID_DG_WIDTH:
 673                         td->curdata.w = value;
 674                         break;
 675                 case HID_DG_HEIGHT:
 676                         td->curdata.h = value;
 677                         break;
 678                 case HID_DG_CONTACTCOUNT:
 679                         break;
 680                 case HID_DG_TOUCH:
 681                         /* do nothing */
 682                         break;
 683
 684                 default:
 685                         if (usage->type)
 686                                 input_event(input, usage->type, usage->code,
 687                                                 value);
 688                         return;
 689                 }
 690
 691                 if (usage->usage_index + 1 == field->report_count) {
 692                         /* we only take into account the last report. */
 693                         if (usage->hid == td->last_slot_field)
 694                                 mt_complete_slot(td, input);
 695
 696                         if (field->index == td->last_field_index
 697                                 && td->num_received >= td->num_expected)
 698                                 mt_sync_frame(td, field->hidinput->input);
 699                 }
 700
 701         }
 702 }
 703
 704 static void mt_report(struct hid_device *hid, struct hid_report *report)
 705 {
 706         struct mt_device *td = hid_get_drvdata(hid);
 707         struct hid_field *field;
 708         unsigned count;
 709         int r, n;
 710
 711         if (report->id != td->mt_report_id)
 712                 return;
 713
 714         if (!(hid->claimed & HID_CLAIMED_INPUT))
 715                 return;
 716
 717         /*
 718          * Includes multi-packet support where subsequent
 719          * packets are sent with zero contactcount.
 720          */
 721         if (td->cc_index >= 0) {
 722                 struct hid_field *field = report->field[td->cc_index];
 723                 int value = field->value[td->cc_value_index];
 724                 if (value)
 725                         td->num_expected = value;
 726         }
 727
 728         for (r = 0; r < report->maxfield; r++) {
 729                 field = report->field[r];
 730                 count = field->report_count;
 731
 732                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
 733                         continue;
 734
 735                 for (n = 0; n < count; n++)
 736                         mt_process_mt_event(hid, field, &field->usage[n],
 737                                         field->value[n]);
 738         }
 739 }
 740
 741 static void mt_set_input_mode(struct hid_device *hdev)
 742 {
 743         struct mt_device *td = hid_get_drvdata(hdev);
 744         struct hid_report *r;
 745         struct hid_report_enum *re;
 746
 747         if (td->inputmode < 0)
 748                 return;
 749
 750         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 751         r = re->report_id_hash[td->inputmode];
 752         if (r) {
 753                 r->field[0]->value[td->inputmode_index] = 0x02;
 754                 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 755         }
 756 }
 757
 758 static void mt_set_maxcontacts(struct hid_device *hdev)
 759 {
 760         struct mt_device *td = hid_get_drvdata(hdev);
 761         struct hid_report *r;
 762         struct hid_report_enum *re;
 763         int fieldmax, max;
 764
 765         if (td->maxcontact_report_id < 0)
 766                 return;
 767
 768         if (!td->mtclass.maxcontacts)
 769                 return;
 770
 771         re = &hdev->report_enum[HID_FEATURE_REPORT];
 772         r = re->report_id_hash[td->maxcontact_report_id];
 773         if (r) {
 774                 max = td->mtclass.maxcontacts;
 775                 fieldmax = r->field[0]->logical_maximum;
 776                 max = min(fieldmax, max);
 777                 if (r->field[0]->value[0] != max) {
 778                         r->field[0]->value[0] = max;
 779                         hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 780                 }
 781         }
 782 }
 783
 784 static void mt_post_parse_default_settings(struct mt_device *td)
 785 {
 786         __s32 quirks = td->mtclass.quirks;
 787
 788         /* unknown serial device needs special quirks */
 789         if (td->touches_by_report == 1) {
 790                 quirks |= MT_QUIRK_ALWAYS_VALID;
 791                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 792                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 793                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 794                 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 795         }
 796
 797         td->mtclass.quirks = quirks;
 798 }
 799
 800 static void mt_post_parse(struct mt_device *td)
 801 {
 802         struct mt_fields *f = td->fields;
 803         struct mt_class *cls = &td->mtclass;
 804
 805         if (td->touches_by_report > 0) {
 806                 int field_count_per_touch = f->length / td->touches_by_report;
 807                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 808         }
 809
 810         if (td->cc_index < 0)
 811                 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 812 }
 813
 814 static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 815
 816 {
 817         struct mt_device *td = hid_get_drvdata(hdev);
 818         struct mt_class *cls = &td->mtclass;
 819         struct input_dev *input = hi->input;
 820
 821         /* Only initialize slots for MT input devices */
 822         if (!test_bit(ABS_MT_POSITION_X, input->absbit))
 823                 return;
 824
 825         if (!td->maxcontacts)
 826                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 827
 828         mt_post_parse(td);
 829         if (td->serial_maybe)
 830                 mt_post_parse_default_settings(td);
 831
 832         if (cls->is_indirect)
 833                 td->mt_flags |= INPUT_MT_POINTER;
 834
 835         if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 836                 td->mt_flags |= INPUT_MT_DROP_UNUSED;
 837
 838         input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
 839
 840         td->mt_flags = 0;
 841 }
 842
 843 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 844 {
 845         int ret, i;
 846         struct mt_device *td;
 847         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 848
 849         for (i = 0; mt_classes[i].name ; i++) {
 850                 if (id->driver_data == mt_classes[i].name) {
 851                         mtclass = &(mt_classes[i]);
 852                         break;
 853                 }
 854         }
 855
 856         /* This allows the driver to correctly support devices
 857          * that emit events over several HID messages.
 858          */
 859         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 860
 861         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 862         if (!td) {
 863                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 864                 return -ENOMEM;
 865         }
 866         td->mtclass = *mtclass;
 867         td->inputmode = -1;
 868         td->maxcontact_report_id = -1;
 869         td->cc_index = -1;
 870         hid_set_drvdata(hdev, td);
 871
 872         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 873         if (!td->fields) {
 874                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 875                 ret = -ENOMEM;
 876                 goto fail;
 877         }
 878
 879         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 880                 td->serial_maybe = true;
 881
 882         ret = hid_parse(hdev);
 883         if (ret != 0)
 884                 goto fail;
 885
 886         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 887         if (ret)
 888                 goto fail;
 889
 890         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 891
 892         mt_set_maxcontacts(hdev);
 893         mt_set_input_mode(hdev);
 894
 895         kfree(td->fields);
 896         td->fields = NULL;
 897
 898         return 0;
 899
 900 fail:
 901         kfree(td->fields);
 902         kfree(td);
 903         return ret;
 904 }
 905
 906 #ifdef CONFIG_PM
 907 static int mt_reset_resume(struct hid_device *hdev)
 908 {
 909         mt_set_maxcontacts(hdev);
 910         mt_set_input_mode(hdev);
 911         return 0;
 912 }
 913
 914 static int mt_resume(struct hid_device *hdev)
 915 {
 916         /* Some Elan legacy devices require SET_IDLE to be set on resume.
 917          * It should be safe to send it to other devices too.
 918          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
 919
 920         hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
 921
 922         return 0;
 923 }
 924 #endif
 925
 926 static void mt_remove(struct hid_device *hdev)
 927 {
 928         struct mt_device *td = hid_get_drvdata(hdev);
 929         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 930         hid_hw_stop(hdev);
 931         kfree(td);
 932         hid_set_drvdata(hdev, NULL);
 933 }
 934
 935 static const struct hid_device_id mt_devices[] = {
 936
 937         /* 3M panels */
 938         { .driver_data = MT_CLS_3M,
 939                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 940                         USB_DEVICE_ID_3M1968) },
 941         { .driver_data = MT_CLS_3M,
 942                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 943                         USB_DEVICE_ID_3M2256) },
 944         { .driver_data = MT_CLS_3M,
 945                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 946                         USB_DEVICE_ID_3M3266) },
 947
 948         /* ActionStar panels */
 949         { .driver_data = MT_CLS_NSMU,
 950                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 951                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 952
 953         /* Atmel panels */
 954         { .driver_data = MT_CLS_SERIAL,
 955                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 956                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 957         { .driver_data = MT_CLS_SERIAL,
 958                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 959                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 960
 961         /* Baanto multitouch devices */
 962         { .driver_data = MT_CLS_NSMU,
 963                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 964                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 965         /* Cando panels */
 966         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 967                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 968                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 969         { .driver_data = MT_CLS_DUAL_CONTACT_NUMBER,
 970                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 971                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 972         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 973                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 974                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 975         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 976                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 977                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 978
 979         /* Chunghwa Telecom touch panels */
 980         {  .driver_data = MT_CLS_NSMU,
 981                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 982                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 983
 984         /* CVTouch panels */
 985         { .driver_data = MT_CLS_NSMU,
 986                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 987                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 988
 989         /* Cypress panel */
 990         { .driver_data = MT_CLS_CYPRESS,
 991                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 992                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 993
 994         /* eGalax devices (resistive) */
 995         { .driver_data = MT_CLS_EGALAX,
 996                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 997                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
 998         { .driver_data = MT_CLS_EGALAX,
 999                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1000                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1001
1002         /* eGalax devices (capacitive) */
1003         { .driver_data = MT_CLS_EGALAX,
1004                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1005                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1006         { .driver_data = MT_CLS_EGALAX_SERIAL,
1007                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1008                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1009         { .driver_data = MT_CLS_EGALAX_SERIAL,
1010                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1011                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1012         { .driver_data = MT_CLS_EGALAX_SERIAL,
1013                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1014                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1015         { .driver_data = MT_CLS_EGALAX_SERIAL,
1016                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1017                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1018         { .driver_data = MT_CLS_EGALAX,
1019                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1020                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1021         { .driver_data = MT_CLS_EGALAX_SERIAL,
1022                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1023                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1024         { .driver_data = MT_CLS_EGALAX,
1025                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1026                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1027         { .driver_data = MT_CLS_EGALAX_SERIAL,
1028                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1029                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1030         { .driver_data = MT_CLS_EGALAX,
1031                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1032                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1033         { .driver_data = MT_CLS_EGALAX,
1034                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1035                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1036         { .driver_data = MT_CLS_EGALAX_SERIAL,
1037                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1038                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1039         { .driver_data = MT_CLS_EGALAX_SERIAL,
1040                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1041                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1042         { .driver_data = MT_CLS_EGALAX_SERIAL,
1043                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1044                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1045         { .driver_data = MT_CLS_EGALAX,
1046                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1047                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1048         { .driver_data = MT_CLS_EGALAX,
1049                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1050                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1051         { .driver_data = MT_CLS_EGALAX,
1052                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1053                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1054
1055         /* Elo TouchSystems IntelliTouch Plus panel */
1056         { .driver_data = MT_CLS_DUAL_CONTACT_ID,
1057                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
1058                         USB_DEVICE_ID_ELO_TS2515) },
1059
1060         /* Flatfrog Panels */
1061         { .driver_data = MT_CLS_FLATFROG,
1062                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1063                         USB_DEVICE_ID_MULTITOUCH_3200) },
1064
1065         /* GeneralTouch panel */
1066         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1067                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1068                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1069         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1070                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1071                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1072
1073         /* Gametel game controller */
1074         { .driver_data = MT_CLS_NSMU,
1075                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1076                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
1077
1078         /* GoodTouch panels */
1079         { .driver_data = MT_CLS_NSMU,
1080                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1081                         USB_DEVICE_ID_GOODTOUCH_000f) },
1082
1083         /* Hanvon panels */
1084         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1085                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1086                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1087
1088         /* Ideacom panel */
1089         { .driver_data = MT_CLS_SERIAL,
1090                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1091                         USB_DEVICE_ID_IDEACOM_IDC6650) },
1092         { .driver_data = MT_CLS_SERIAL,
1093                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1094                         USB_DEVICE_ID_IDEACOM_IDC6651) },
1095
1096         /* Ilitek dual touch panel */
1097         {  .driver_data = MT_CLS_NSMU,
1098                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1099                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1100
1101         /* IRTOUCH panels */
1102         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1103                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
1104                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
1105
1106         /* LG Display panels */
1107         { .driver_data = MT_CLS_DEFAULT,
1108                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
1109                         USB_DEVICE_ID_LG_MULTITOUCH) },
1110
1111         /* Lumio panels */
1112         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1113                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1114                         USB_DEVICE_ID_CRYSTALTOUCH) },
1115         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1116                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1117                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
1118
1119         /* MosArt panels */
1120         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1121                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1122                         USB_DEVICE_ID_ASUS_T91MT)},
1123         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1124                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1125                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1126         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1127                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1128                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1129
1130         /* Nexio panels */
1131         { .driver_data = MT_CLS_DEFAULT,
1132                 MT_USB_DEVICE(USB_VENDOR_ID_NEXIO,
1133                         USB_DEVICE_ID_NEXIO_MULTITOUCH_420)},
1134
1135         /* Panasonic panels */
1136         { .driver_data = MT_CLS_PANASONIC,
1137                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1138                         USB_DEVICE_ID_PANABOARD_UBT780) },
1139         { .driver_data = MT_CLS_PANASONIC,
1140                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1141                         USB_DEVICE_ID_PANABOARD_UBT880) },
1142
1143         /* Novatek Panel */
1144         { .driver_data = MT_CLS_NSMU,
1145                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1146                         USB_DEVICE_ID_NOVATEK_PCT) },
1147
1148         /* PenMount panels */
1149         { .driver_data = MT_CLS_CONFIDENCE,
1150                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1151                         USB_DEVICE_ID_PENMOUNT_PCI) },
1152
1153         /* PixArt optical touch screen */
1154         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1155                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1156                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1157         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1158                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1159                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1160         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1161                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1162                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1163
1164         /* PixCir-based panels */
1165         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1166                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1167                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1168         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1169                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1170                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1171
1172         /* Quanta-based panels */
1173         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1174                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1175                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1176         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1177                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1178                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1179         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1180                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1181                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1182
1183         /* Stantum panels */
1184         { .driver_data = MT_CLS_CONFIDENCE,
1185                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1186                         USB_DEVICE_ID_MTP)},
1187         { .driver_data = MT_CLS_CONFIDENCE,
1188                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1189                         USB_DEVICE_ID_MTP_STM)},
1190         { .driver_data = MT_CLS_DEFAULT,
1191                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1192                         USB_DEVICE_ID_MTP_SITRONIX)},
1193
1194         /* TopSeed panels */
1195         { .driver_data = MT_CLS_TOPSEED,
1196                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1197                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1198
1199         /* Touch International panels */
1200         { .driver_data = MT_CLS_NSMU,
1201                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1202                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1203
1204         /* Unitec panels */
1205         { .driver_data = MT_CLS_NSMU,
1206                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1207                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1208         { .driver_data = MT_CLS_NSMU,
1209                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1210                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1211         /* XAT */
1212         { .driver_data = MT_CLS_NSMU,
1213                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1214                         USB_DEVICE_ID_XAT_CSR) },
1215
1216         /* Xiroku */
1217         { .driver_data = MT_CLS_NSMU,
1218                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1219                         USB_DEVICE_ID_XIROKU_SPX) },
1220         { .driver_data = MT_CLS_NSMU,
1221                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1222                         USB_DEVICE_ID_XIROKU_MPX) },
1223         { .driver_data = MT_CLS_NSMU,
1224                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1225                         USB_DEVICE_ID_XIROKU_CSR) },
1226         { .driver_data = MT_CLS_NSMU,
1227                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1228                         USB_DEVICE_ID_XIROKU_SPX1) },
1229         { .driver_data = MT_CLS_NSMU,
1230                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1231                         USB_DEVICE_ID_XIROKU_MPX1) },
1232         { .driver_data = MT_CLS_NSMU,
1233                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1234                         USB_DEVICE_ID_XIROKU_CSR1) },
1235         { .driver_data = MT_CLS_NSMU,
1236                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1237                         USB_DEVICE_ID_XIROKU_SPX2) },
1238         { .driver_data = MT_CLS_NSMU,
1239                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1240                         USB_DEVICE_ID_XIROKU_MPX2) },
1241         { .driver_data = MT_CLS_NSMU,
1242                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1243                         USB_DEVICE_ID_XIROKU_CSR2) },
1244
1245         /* Zytronic panels */
1246         { .driver_data = MT_CLS_SERIAL,
1247                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1248                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1249
1250         /* Generic MT device */
1251         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1252         { }
1253 };
1254 MODULE_DEVICE_TABLE(hid, mt_devices);
1255
1256 static const struct hid_usage_id mt_grabbed_usages[] = {
1257         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1258         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1259 };
1260
1261 static struct hid_driver mt_driver = {
1262         .name = "hid-multitouch",
1263         .id_table = mt_devices,
1264         .probe = mt_probe,
1265         .remove = mt_remove,
1266         .input_mapping = mt_input_mapping,
1267         .input_mapped = mt_input_mapped,
1268         .input_configured = mt_input_configured,
1269         .feature_mapping = mt_feature_mapping,
1270         .usage_table = mt_grabbed_usages,
1271         .event = mt_event,
1272         .report = mt_report,
1273 #ifdef CONFIG_PM
1274         .reset_resume = mt_reset_resume,
1275         .resume = mt_resume,
1276 #endif
1277 };
1278 module_hid_driver(mt_driver);