drivers/hid/hid-multitouch.c

   1 /*
   2  *  HID driver for multitouch panels
   3  *
   4  *  Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
   5  *  Copyright (c) 2010-2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *
   8  *  This code is partly based on hid-egalax.c:
   9  *
  10  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  11  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  12  *  Copyright (c) 2010 Canonical, Ltd.
  13  *
  14  *  This code is partly based on hid-3m-pct.c:
  15  *
  16  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  17  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  18  *  Copyright (c) 2010      Canonical, Ltd.
  19  *
  20  */
  21
  22 /*
  23  * This program is free software; you can redistribute it and/or modify it
  24  * under the terms of the GNU General Public License as published by the Free
  25  * Software Foundation; either version 2 of the License, or (at your option)
  26  * any later version.
  27  */
  28
  29 #include <linux/device.h>
  30 #include <linux/hid.h>
  31 #include <linux/module.h>
  32 #include <linux/slab.h>
  33 #include <linux/usb.h>
  34 #include <linux/input/mt.h>
  35 #include "usbhid/usbhid.h"
  36
  37
  38 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  39 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  40 MODULE_DESCRIPTION("HID multitouch panels");
  41 MODULE_LICENSE("GPL");
  42
  43 #include "hid-ids.h"
  44
  45 /* quirks to control the device */
  46 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  47 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  48 #define MT_QUIRK_CYPRESS                (1 << 2)
  49 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  50 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  51 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  52 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  53 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  54 #define MT_QUIRK_NO_AREA                (1 << 9)
  55 #define MT_QUIRK_IGNORE_DUPLICATES      (1 << 10)
  56 #define MT_QUIRK_HOVERING               (1 << 11)
  57 #define MT_QUIRK_CONTACT_CNT_ACCURATE   (1 << 12)
  58
  59 struct mt_slot {
  60         __s32 x, y, cx, cy, p, w, h;
  61         __s32 contactid;        /* the device ContactID assigned to this slot */
  62         bool touch_state;       /* is the touch valid? */
  63         bool inrange_state;     /* is the finger in proximity of the sensor? */
  64 };
  65
  66 struct mt_class {
  67         __s32 name;     /* MT_CLS */
  68         __s32 quirks;
  69         __s32 sn_move;  /* Signal/noise ratio for move events */
  70         __s32 sn_width; /* Signal/noise ratio for width events */
  71         __s32 sn_height;        /* Signal/noise ratio for height events */
  72         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  73         __u8 maxcontacts;
  74         bool is_indirect;       /* true for touchpads */
  75 };
  76
  77 struct mt_fields {
  78         unsigned usages[HID_MAX_FIELDS];
  79         unsigned int length;
  80 };
  81
  82 struct mt_device {
  83         struct mt_slot curdata; /* placeholder of incoming data */
  84         struct mt_class mtclass;        /* our mt device class */
  85         struct mt_fields *fields;       /* temporary placeholder for storing the
  86                                            multitouch fields */
  87         int cc_index;   /* contact count field index in the report */
  88         int cc_value_index;     /* contact count value index in the field */
  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                         return 1;
 408                 case HID_GD_Y:
 409                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 410                                 hid_map_usage(hi, usage, bit, max,
 411                                         EV_ABS, ABS_MT_TOOL_Y);
 412                                 set_abs(hi->input, ABS_MT_TOOL_Y, field,
 413                                         cls->sn_move);
 414                         } else {
 415                                 hid_map_usage(hi, usage, bit, max,
 416                                         EV_ABS, ABS_MT_POSITION_Y);
 417                                 set_abs(hi->input, ABS_MT_POSITION_Y, field,
 418                                         cls->sn_move);
 419                         }
 420
 421                         mt_store_field(usage, td, hi);
 422                         return 1;
 423                 }
 424                 return 0;
 425
 426         case HID_UP_DIGITIZER:
 427                 switch (usage->hid) {
 428                 case HID_DG_INRANGE:
 429                         if (cls->quirks & MT_QUIRK_HOVERING) {
 430                                 hid_map_usage(hi, usage, bit, max,
 431                                         EV_ABS, ABS_MT_DISTANCE);
 432                                 input_set_abs_params(hi->input,
 433                                         ABS_MT_DISTANCE, 0, 1, 0, 0);
 434                         }
 435                         mt_store_field(usage, td, hi);
 436                         return 1;
 437                 case HID_DG_CONFIDENCE:
 438                         mt_store_field(usage, td, hi);
 439                         return 1;
 440                 case HID_DG_TIPSWITCH:
 441                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 442                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 443                         mt_store_field(usage, td, hi);
 444                         return 1;
 445                 case HID_DG_CONTACTID:
 446                         mt_store_field(usage, td, hi);
 447                         td->touches_by_report++;
 448                         td->mt_report_id = field->report->id;
 449                         return 1;
 450                 case HID_DG_WIDTH:
 451                         hid_map_usage(hi, usage, bit, max,
 452                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 453                         if (!(cls->quirks & MT_QUIRK_NO_AREA))
 454                                 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 455                                         cls->sn_width);
 456                         mt_store_field(usage, td, hi);
 457                         return 1;
 458                 case HID_DG_HEIGHT:
 459                         hid_map_usage(hi, usage, bit, max,
 460                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 461                         if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
 462                                 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 463                                         cls->sn_height);
 464                                 input_set_abs_params(hi->input,
 465                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 466                         }
 467                         mt_store_field(usage, td, hi);
 468                         return 1;
 469                 case HID_DG_TIPPRESSURE:
 470                         hid_map_usage(hi, usage, bit, max,
 471                                         EV_ABS, ABS_MT_PRESSURE);
 472                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 473                                 cls->sn_pressure);
 474                         mt_store_field(usage, td, hi);
 475                         return 1;
 476                 case HID_DG_CONTACTCOUNT:
 477                         td->cc_index = field->index;
 478                         td->cc_value_index = usage->usage_index;
 479                         return 1;
 480                 case HID_DG_CONTACTMAX:
 481                         /* we don't set td->last_slot_field as contactcount and
 482                          * contact max are global to the report */
 483                         return -1;
 484                 case HID_DG_TOUCH:
 485                         /* Legacy devices use TIPSWITCH and not TOUCH.
 486                          * Let's just ignore this field. */
 487                         return -1;
 488                 }
 489                 /* let hid-input decide for the others */
 490                 return 0;
 491
 492         case HID_UP_BUTTON:
 493                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 494                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 495                 input_set_capability(hi->input, EV_KEY, code);
 496                 return 1;
 497
 498         case 0xff000000:
 499                 /* we do not want to map these: no input-oriented meaning */
 500                 return -1;
 501         }
 502
 503         return 0;
 504 }
 505
 506 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 507                 struct hid_field *field, struct hid_usage *usage,
 508                 unsigned long **bit, int *max)
 509 {
 510         if (usage->type == EV_KEY || usage->type == EV_ABS)
 511                 set_bit(usage->type, hi->input->evbit);
 512
 513         return -1;
 514 }
 515
 516 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
 517 {
 518         __s32 quirks = td->mtclass.quirks;
 519
 520         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 521                 return td->curdata.contactid;
 522
 523         if (quirks & MT_QUIRK_CYPRESS)
 524                 return cypress_compute_slot(td);
 525
 526         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 527                 return td->num_received;
 528
 529         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 530                 return td->curdata.contactid - 1;
 531
 532         return input_mt_get_slot_by_key(input, td->curdata.contactid);
 533 }
 534
 535 /*
 536  * this function is called when a whole contact has been processed,
 537  * so that it can assign it to a slot and store the data there
 538  */
 539 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
 540 {
 541         if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
 542             td->num_received >= td->num_expected)
 543                 return;
 544
 545         if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
 546                 int slotnum = mt_compute_slot(td, input);
 547                 struct mt_slot *s = &td->curdata;
 548                 struct input_mt *mt = input->mt;
 549
 550                 if (slotnum < 0 || slotnum >= td->maxcontacts)
 551                         return;
 552
 553                 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
 554                         struct input_mt_slot *slot = &mt->slots[slotnum];
 555                         if (input_mt_is_active(slot) &&
 556                             input_mt_is_used(mt, slot))
 557                                 return;
 558                 }
 559
 560                 input_mt_slot(input, slotnum);
 561                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 562                         s->touch_state || s->inrange_state);
 563                 if (s->touch_state || s->inrange_state) {
 564                         /* this finger is in proximity of the sensor */
 565                         int wide = (s->w > s->h);
 566                         /* divided by two to match visual scale of touch */
 567                         int major = max(s->w, s->h) >> 1;
 568                         int minor = min(s->w, s->h) >> 1;
 569
 570                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 571                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 572                         input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
 573                         input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
 574                         input_event(input, EV_ABS, ABS_MT_DISTANCE,
 575                                 !s->touch_state);
 576                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 577                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 578                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 579                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 580                 }
 581         }
 582
 583         td->num_received++;
 584 }
 585
 586 /*
 587  * this function is called when a whole packet has been received and processed,
 588  * so that it can decide what to send to the input layer.
 589  */
 590 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 591 {
 592         input_mt_sync_frame(input);
 593         input_sync(input);
 594         td->num_received = 0;
 595 }
 596
 597 static int mt_event(struct hid_device *hid, struct hid_field *field,
 598                                 struct hid_usage *usage, __s32 value)
 599 {
 600         /* we will handle the hidinput part later, now remains hiddev */
 601         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 602                 hid->hiddev_hid_event(hid, field, usage, value);
 603
 604         return 1;
 605 }
 606
 607 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
 608                                 struct hid_usage *usage, __s32 value)
 609 {
 610         struct mt_device *td = hid_get_drvdata(hid);
 611         __s32 quirks = td->mtclass.quirks;
 612
 613         if (hid->claimed & HID_CLAIMED_INPUT) {
 614                 switch (usage->hid) {
 615                 case HID_DG_INRANGE:
 616                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 617                                 td->curvalid = value;
 618                         if (quirks & MT_QUIRK_HOVERING)
 619                                 td->curdata.inrange_state = value;
 620                         break;
 621                 case HID_DG_TIPSWITCH:
 622                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 623                                 td->curvalid = value;
 624                         td->curdata.touch_state = value;
 625                         break;
 626                 case HID_DG_CONFIDENCE:
 627                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 628                                 td->curvalid = value;
 629                         break;
 630                 case HID_DG_CONTACTID:
 631                         td->curdata.contactid = value;
 632                         break;
 633                 case HID_DG_TIPPRESSURE:
 634                         td->curdata.p = value;
 635                         break;
 636                 case HID_GD_X:
 637                         if (usage->code == ABS_MT_TOOL_X)
 638                                 td->curdata.cx = value;
 639                         else
 640                                 td->curdata.x = value;
 641                         break;
 642                 case HID_GD_Y:
 643                         if (usage->code == ABS_MT_TOOL_Y)
 644                                 td->curdata.cy = value;
 645                         else
 646                                 td->curdata.y = value;
 647                         break;
 648                 case HID_DG_WIDTH:
 649                         td->curdata.w = value;
 650                         break;
 651                 case HID_DG_HEIGHT:
 652                         td->curdata.h = value;
 653                         break;
 654                 case HID_DG_CONTACTCOUNT:
 655                         break;
 656                 case HID_DG_TOUCH:
 657                         /* do nothing */
 658                         break;
 659
 660                 default:
 661                         return;
 662                 }
 663
 664                 if (usage->usage_index + 1 == field->report_count) {
 665                         /* we only take into account the last report. */
 666                         if (usage->hid == td->last_slot_field)
 667                                 mt_complete_slot(td, field->hidinput->input);
 668                 }
 669
 670         }
 671 }
 672
 673 static void mt_report(struct hid_device *hid, struct hid_report *report)
 674 {
 675         struct mt_device *td = hid_get_drvdata(hid);
 676         struct hid_field *field;
 677         unsigned count;
 678         int r, n;
 679
 680         if (report->id != td->mt_report_id)
 681                 return;
 682
 683         if (!(hid->claimed & HID_CLAIMED_INPUT))
 684                 return;
 685
 686         /*
 687          * Includes multi-packet support where subsequent
 688          * packets are sent with zero contactcount.
 689          */
 690         if (td->cc_index >= 0) {
 691                 struct hid_field *field = report->field[td->cc_index];
 692                 int value = field->value[td->cc_value_index];
 693                 if (value)
 694                         td->num_expected = value;
 695         }
 696
 697         for (r = 0; r < report->maxfield; r++) {
 698                 field = report->field[r];
 699                 count = field->report_count;
 700
 701                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
 702                         continue;
 703
 704                 for (n = 0; n < count; n++)
 705                         mt_process_mt_event(hid, field, &field->usage[n],
 706                                         field->value[n]);
 707         }
 708
 709         if (td->num_received >= td->num_expected)
 710                 mt_sync_frame(td, report->field[0]->hidinput->input);
 711 }
 712
 713 static void mt_set_input_mode(struct hid_device *hdev)
 714 {
 715         struct mt_device *td = hid_get_drvdata(hdev);
 716         struct hid_report *r;
 717         struct hid_report_enum *re;
 718
 719         if (td->inputmode < 0)
 720                 return;
 721
 722         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 723         r = re->report_id_hash[td->inputmode];
 724         if (r) {
 725                 r->field[0]->value[td->inputmode_index] = 0x02;
 726                 usbhid_submit_report(hdev, r, USB_DIR_OUT);
 727         }
 728 }
 729
 730 static void mt_set_maxcontacts(struct hid_device *hdev)
 731 {
 732         struct mt_device *td = hid_get_drvdata(hdev);
 733         struct hid_report *r;
 734         struct hid_report_enum *re;
 735         int fieldmax, max;
 736
 737         if (td->maxcontact_report_id < 0)
 738                 return;
 739
 740         if (!td->mtclass.maxcontacts)
 741                 return;
 742
 743         re = &hdev->report_enum[HID_FEATURE_REPORT];
 744         r = re->report_id_hash[td->maxcontact_report_id];
 745         if (r) {
 746                 max = td->mtclass.maxcontacts;
 747                 fieldmax = r->field[0]->logical_maximum;
 748                 max = min(fieldmax, max);
 749                 if (r->field[0]->value[0] != max) {
 750                         r->field[0]->value[0] = max;
 751                         usbhid_submit_report(hdev, r, USB_DIR_OUT);
 752                 }
 753         }
 754 }
 755
 756 static void mt_post_parse_default_settings(struct mt_device *td)
 757 {
 758         __s32 quirks = td->mtclass.quirks;
 759
 760         /* unknown serial device needs special quirks */
 761         if (td->touches_by_report == 1) {
 762                 quirks |= MT_QUIRK_ALWAYS_VALID;
 763                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 764                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 765                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 766                 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 767         }
 768
 769         td->mtclass.quirks = quirks;
 770 }
 771
 772 static void mt_post_parse(struct mt_device *td)
 773 {
 774         struct mt_fields *f = td->fields;
 775         struct mt_class *cls = &td->mtclass;
 776
 777         if (td->touches_by_report > 0) {
 778                 int field_count_per_touch = f->length / td->touches_by_report;
 779                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 780         }
 781
 782         if (td->cc_index < 0)
 783                 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 784 }
 785
 786 static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 787
 788 {
 789         struct mt_device *td = hid_get_drvdata(hdev);
 790         struct mt_class *cls = &td->mtclass;
 791         struct input_dev *input = hi->input;
 792
 793         /* Only initialize slots for MT input devices */
 794         if (!test_bit(ABS_MT_POSITION_X, input->absbit))
 795                 return;
 796
 797         if (!td->maxcontacts)
 798                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 799
 800         mt_post_parse(td);
 801         if (td->serial_maybe)
 802                 mt_post_parse_default_settings(td);
 803
 804         if (cls->is_indirect)
 805                 td->mt_flags |= INPUT_MT_POINTER;
 806
 807         if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 808                 td->mt_flags |= INPUT_MT_DROP_UNUSED;
 809
 810         input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
 811
 812         td->mt_flags = 0;
 813 }
 814
 815 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 816 {
 817         int ret, i;
 818         struct mt_device *td;
 819         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 820
 821         for (i = 0; mt_classes[i].name ; i++) {
 822                 if (id->driver_data == mt_classes[i].name) {
 823                         mtclass = &(mt_classes[i]);
 824                         break;
 825                 }
 826         }
 827
 828         /* This allows the driver to correctly support devices
 829          * that emit events over several HID messages.
 830          */
 831         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 832
 833         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 834         if (!td) {
 835                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 836                 return -ENOMEM;
 837         }
 838         td->mtclass = *mtclass;
 839         td->inputmode = -1;
 840         td->maxcontact_report_id = -1;
 841         td->cc_index = -1;
 842         hid_set_drvdata(hdev, td);
 843
 844         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 845         if (!td->fields) {
 846                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 847                 ret = -ENOMEM;
 848                 goto fail;
 849         }
 850
 851         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 852                 td->serial_maybe = true;
 853
 854         ret = hid_parse(hdev);
 855         if (ret != 0)
 856                 goto fail;
 857
 858         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 859         if (ret)
 860                 goto fail;
 861
 862         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 863
 864         mt_set_maxcontacts(hdev);
 865         mt_set_input_mode(hdev);
 866
 867         kfree(td->fields);
 868         td->fields = NULL;
 869
 870         return 0;
 871
 872 fail:
 873         kfree(td->fields);
 874         kfree(td);
 875         return ret;
 876 }
 877
 878 #ifdef CONFIG_PM
 879 static int mt_reset_resume(struct hid_device *hdev)
 880 {
 881         mt_set_maxcontacts(hdev);
 882         mt_set_input_mode(hdev);
 883         return 0;
 884 }
 885
 886 static int mt_resume(struct hid_device *hdev)
 887 {
 888         struct usb_interface *intf;
 889         struct usb_host_interface *interface;
 890         struct usb_device *dev;
 891
 892         if (hdev->bus != BUS_USB)
 893                 return 0;
 894
 895         intf = to_usb_interface(hdev->dev.parent);
 896         interface = intf->cur_altsetting;
 897         dev = hid_to_usb_dev(hdev);
 898
 899         /* Some Elan legacy devices require SET_IDLE to be set on resume.
 900          * It should be safe to send it to other devices too.
 901          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
 902
 903         usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 904                         HID_REQ_SET_IDLE,
 905                         USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 906                         0, interface->desc.bInterfaceNumber,
 907                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 908
 909         return 0;
 910 }
 911 #endif
 912
 913 static void mt_remove(struct hid_device *hdev)
 914 {
 915         struct mt_device *td = hid_get_drvdata(hdev);
 916         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
 917         hid_hw_stop(hdev);
 918         kfree(td);
 919         hid_set_drvdata(hdev, NULL);
 920 }
 921
 922 static const struct hid_device_id mt_devices[] = {
 923
 924         /* 3M panels */
 925         { .driver_data = MT_CLS_3M,
 926                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 927                         USB_DEVICE_ID_3M1968) },
 928         { .driver_data = MT_CLS_3M,
 929                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 930                         USB_DEVICE_ID_3M2256) },
 931         { .driver_data = MT_CLS_3M,
 932                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
 933                         USB_DEVICE_ID_3M3266) },
 934
 935         /* ActionStar panels */
 936         { .driver_data = MT_CLS_NSMU,
 937                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
 938                         USB_DEVICE_ID_ACTIONSTAR_1011) },
 939
 940         /* Atmel panels */
 941         { .driver_data = MT_CLS_SERIAL,
 942                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 943                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
 944         { .driver_data = MT_CLS_SERIAL,
 945                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
 946                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
 947
 948         /* Baanto multitouch devices */
 949         { .driver_data = MT_CLS_NSMU,
 950                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
 951                         USB_DEVICE_ID_BAANTO_MT_190W2) },
 952         /* Cando panels */
 953         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 954                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 955                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
 956         { .driver_data = MT_CLS_DUAL_CONTACT_NUMBER,
 957                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 958                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
 959         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 960                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 961                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
 962         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 963                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
 964                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
 965
 966         /* Chunghwa Telecom touch panels */
 967         {  .driver_data = MT_CLS_NSMU,
 968                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
 969                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
 970
 971         /* CVTouch panels */
 972         { .driver_data = MT_CLS_NSMU,
 973                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
 974                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
 975
 976         /* Cypress panel */
 977         { .driver_data = MT_CLS_CYPRESS,
 978                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
 979                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
 980
 981         /* eGalax devices (resistive) */
 982         { .driver_data = MT_CLS_EGALAX,
 983                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 984                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
 985         { .driver_data = MT_CLS_EGALAX,
 986                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 987                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
 988
 989         /* eGalax devices (capacitive) */
 990         { .driver_data = MT_CLS_EGALAX,
 991                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 992                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
 993         { .driver_data = MT_CLS_EGALAX_SERIAL,
 994                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 995                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
 996         { .driver_data = MT_CLS_EGALAX_SERIAL,
 997                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
 998                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
 999         { .driver_data = MT_CLS_EGALAX_SERIAL,
1000                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1001                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1002         { .driver_data = MT_CLS_EGALAX_SERIAL,
1003                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1004                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1005         { .driver_data = MT_CLS_EGALAX,
1006                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1007                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1008         { .driver_data = MT_CLS_EGALAX_SERIAL,
1009                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1010                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1011         { .driver_data = MT_CLS_EGALAX,
1012                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1013                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1014         { .driver_data = MT_CLS_EGALAX_SERIAL,
1015                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1016                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1017         { .driver_data = MT_CLS_EGALAX,
1018                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1019                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1020         { .driver_data = MT_CLS_EGALAX,
1021                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1022                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1023         { .driver_data = MT_CLS_EGALAX_SERIAL,
1024                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1025                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1026         { .driver_data = MT_CLS_EGALAX_SERIAL,
1027                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1028                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1029         { .driver_data = MT_CLS_EGALAX_SERIAL,
1030                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1031                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1032         { .driver_data = MT_CLS_EGALAX,
1033                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1034                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1035         { .driver_data = MT_CLS_EGALAX,
1036                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1037                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1038         { .driver_data = MT_CLS_EGALAX,
1039                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1040                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1041
1042         /* Elo TouchSystems IntelliTouch Plus panel */
1043         { .driver_data = MT_CLS_DUAL_CONTACT_ID,
1044                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
1045                         USB_DEVICE_ID_ELO_TS2515) },
1046
1047         /* Flatfrog Panels */
1048         { .driver_data = MT_CLS_FLATFROG,
1049                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1050                         USB_DEVICE_ID_MULTITOUCH_3200) },
1051
1052         /* GeneralTouch panel */
1053         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1054                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1055                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1056         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1057                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1058                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1059
1060         /* Gametel game controller */
1061         { .driver_data = MT_CLS_NSMU,
1062                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1063                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
1064
1065         /* GoodTouch panels */
1066         { .driver_data = MT_CLS_NSMU,
1067                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1068                         USB_DEVICE_ID_GOODTOUCH_000f) },
1069
1070         /* Hanvon panels */
1071         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1072                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1073                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1074
1075         /* Ideacom panel */
1076         { .driver_data = MT_CLS_SERIAL,
1077                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1078                         USB_DEVICE_ID_IDEACOM_IDC6650) },
1079         { .driver_data = MT_CLS_SERIAL,
1080                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1081                         USB_DEVICE_ID_IDEACOM_IDC6651) },
1082
1083         /* Ilitek dual touch panel */
1084         {  .driver_data = MT_CLS_NSMU,
1085                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1086                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1087
1088         /* IRTOUCH panels */
1089         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1090                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
1091                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
1092
1093         /* LG Display panels */
1094         { .driver_data = MT_CLS_DEFAULT,
1095                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
1096                         USB_DEVICE_ID_LG_MULTITOUCH) },
1097
1098         /* Lumio panels */
1099         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1100                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1101                         USB_DEVICE_ID_CRYSTALTOUCH) },
1102         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1103                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1104                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
1105
1106         /* MosArt panels */
1107         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1108                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1109                         USB_DEVICE_ID_ASUS_T91MT)},
1110         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1111                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1112                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1113         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1114                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1115                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1116
1117         /* Nexio panels */
1118         { .driver_data = MT_CLS_DEFAULT,
1119                 MT_USB_DEVICE(USB_VENDOR_ID_NEXIO,
1120                         USB_DEVICE_ID_NEXIO_MULTITOUCH_420)},
1121
1122         /* Panasonic panels */
1123         { .driver_data = MT_CLS_PANASONIC,
1124                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1125                         USB_DEVICE_ID_PANABOARD_UBT780) },
1126         { .driver_data = MT_CLS_PANASONIC,
1127                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1128                         USB_DEVICE_ID_PANABOARD_UBT880) },
1129
1130         /* Novatek Panel */
1131         { .driver_data = MT_CLS_NSMU,
1132                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1133                         USB_DEVICE_ID_NOVATEK_PCT) },
1134
1135         /* PenMount panels */
1136         { .driver_data = MT_CLS_CONFIDENCE,
1137                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1138                         USB_DEVICE_ID_PENMOUNT_PCI) },
1139
1140         /* PixArt optical touch screen */
1141         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1142                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1143                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1144         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1145                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1146                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1147         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1148                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1149                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1150
1151         /* PixCir-based panels */
1152         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1153                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1154                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1155         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1156                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1157                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1158
1159         /* Quanta-based panels */
1160         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1161                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1162                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1163         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1164                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1165                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1166         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1167                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1168                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1169
1170         /* Stantum panels */
1171         { .driver_data = MT_CLS_CONFIDENCE,
1172                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1173                         USB_DEVICE_ID_MTP)},
1174         { .driver_data = MT_CLS_CONFIDENCE,
1175                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1176                         USB_DEVICE_ID_MTP_STM)},
1177         { .driver_data = MT_CLS_DEFAULT,
1178                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1179                         USB_DEVICE_ID_MTP_SITRONIX)},
1180
1181         /* TopSeed panels */
1182         { .driver_data = MT_CLS_TOPSEED,
1183                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1184                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1185
1186         /* Touch International panels */
1187         { .driver_data = MT_CLS_NSMU,
1188                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1189                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1190
1191         /* Unitec panels */
1192         { .driver_data = MT_CLS_NSMU,
1193                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1194                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1195         { .driver_data = MT_CLS_NSMU,
1196                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1197                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1198         /* XAT */
1199         { .driver_data = MT_CLS_NSMU,
1200                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1201                         USB_DEVICE_ID_XAT_CSR) },
1202
1203         /* Xiroku */
1204         { .driver_data = MT_CLS_NSMU,
1205                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1206                         USB_DEVICE_ID_XIROKU_SPX) },
1207         { .driver_data = MT_CLS_NSMU,
1208                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1209                         USB_DEVICE_ID_XIROKU_MPX) },
1210         { .driver_data = MT_CLS_NSMU,
1211                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1212                         USB_DEVICE_ID_XIROKU_CSR) },
1213         { .driver_data = MT_CLS_NSMU,
1214                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1215                         USB_DEVICE_ID_XIROKU_SPX1) },
1216         { .driver_data = MT_CLS_NSMU,
1217                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1218                         USB_DEVICE_ID_XIROKU_MPX1) },
1219         { .driver_data = MT_CLS_NSMU,
1220                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1221                         USB_DEVICE_ID_XIROKU_CSR1) },
1222         { .driver_data = MT_CLS_NSMU,
1223                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1224                         USB_DEVICE_ID_XIROKU_SPX2) },
1225         { .driver_data = MT_CLS_NSMU,
1226                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1227                         USB_DEVICE_ID_XIROKU_MPX2) },
1228         { .driver_data = MT_CLS_NSMU,
1229                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1230                         USB_DEVICE_ID_XIROKU_CSR2) },
1231
1232         /* Zytronic panels */
1233         { .driver_data = MT_CLS_SERIAL,
1234                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1235                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1236
1237         /* Generic MT device */
1238         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1239         { }
1240 };
1241 MODULE_DEVICE_TABLE(hid, mt_devices);
1242
1243 static const struct hid_usage_id mt_grabbed_usages[] = {
1244         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1245         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1246 };
1247
1248 static struct hid_driver mt_driver = {
1249         .name = "hid-multitouch",
1250         .id_table = mt_devices,
1251         .probe = mt_probe,
1252         .remove = mt_remove,
1253         .input_mapping = mt_input_mapping,
1254         .input_mapped = mt_input_mapped,
1255         .input_configured = mt_input_configured,
1256         .feature_mapping = mt_feature_mapping,
1257         .usage_table = mt_grabbed_usages,
1258         .event = mt_event,
1259         .report = mt_report,
1260 #ifdef CONFIG_PM
1261         .reset_resume = mt_reset_resume,
1262         .resume = mt_resume,
1263 #endif
1264 };
1265 module_hid_driver(mt_driver);