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