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