drivers/hid/hid-multitouch.c

   1 /*
   2  *  HID driver for multitouch panels
   3  *
   4  *  Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
   5  *  Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *  Copyright (c) 2012-2013 Red Hat, Inc
   8  *
   9  *  This code is partly based on hid-egalax.c:
  10  *
  11  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  12  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  13  *  Copyright (c) 2010 Canonical, Ltd.
  14  *
  15  *  This code is partly based on hid-3m-pct.c:
  16  *
  17  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  18  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  19  *  Copyright (c) 2010      Canonical, Ltd.
  20  *
  21  */
  22
  23 /*
  24  * This program is free software; you can redistribute it and/or modify it
  25  * under the terms of the GNU General Public License as published by the Free
  26  * Software Foundation; either version 2 of the License, or (at your option)
  27  * any later version.
  28  */
  29
  30 /*
  31  * This driver is regularly tested thanks to the tool hid-test[1].
  32  * This tool relies on hid-replay[2] and a database of hid devices[3].
  33  * Please run these regression tests before patching this module so that
  34  * your patch won't break existing known devices.
  35  *
  36  * [1] https://github.com/bentiss/hid-test
  37  * [2] https://github.com/bentiss/hid-replay
  38  * [3] https://github.com/bentiss/hid-devices
  39  */
  40
  41 #include <linux/device.h>
  42 #include <linux/hid.h>
  43 #include <linux/module.h>
  44 #include <linux/slab.h>
  45 #include <linux/usb.h>
  46 #include <linux/input/mt.h>
  47 #include <linux/string.h>
  48
  49
  50 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  51 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  52 MODULE_DESCRIPTION("HID multitouch panels");
  53 MODULE_LICENSE("GPL");
  54
  55 #include "hid-ids.h"
  56
  57 /* quirks to control the device */
  58 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  59 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  60 #define MT_QUIRK_CYPRESS                (1 << 2)
  61 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  62 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  63 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  64 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  65 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  66 #define MT_QUIRK_NO_AREA                (1 << 9)
  67 #define MT_QUIRK_IGNORE_DUPLICATES      (1 << 10)
  68 #define MT_QUIRK_HOVERING               (1 << 11)
  69 #define MT_QUIRK_CONTACT_CNT_ACCURATE   (1 << 12)
  70
  71 struct mt_slot {
  72         __s32 x, y, cx, cy, p, w, h;
  73         __s32 contactid;        /* the device ContactID assigned to this slot */
  74         bool touch_state;       /* is the touch valid? */
  75         bool inrange_state;     /* is the finger in proximity of the sensor? */
  76 };
  77
  78 struct mt_class {
  79         __s32 name;     /* MT_CLS */
  80         __s32 quirks;
  81         __s32 sn_move;  /* Signal/noise ratio for move events */
  82         __s32 sn_width; /* Signal/noise ratio for width events */
  83         __s32 sn_height;        /* Signal/noise ratio for height events */
  84         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  85         __u8 maxcontacts;
  86         bool is_indirect;       /* true for touchpads */
  87 };
  88
  89 struct mt_fields {
  90         unsigned usages[HID_MAX_FIELDS];
  91         unsigned int length;
  92 };
  93
  94 struct mt_device {
  95         struct mt_slot curdata; /* placeholder of incoming data */
  96         struct mt_class mtclass;        /* our mt device class */
  97         struct mt_fields *fields;       /* temporary placeholder for storing the
  98                                            multitouch fields */
  99         int cc_index;   /* contact count field index in the report */
 100         int cc_value_index;     /* contact count value index in the field */
 101         unsigned last_slot_field;       /* the last field of a slot */
 102         unsigned mt_report_id;  /* the report ID of the multitouch device */
 103         unsigned pen_report_id; /* the report ID of the pen device */
 104         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
 105         __s8 inputmode_index;   /* InputMode HID feature index in the report */
 106         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
 107                                    -1 if non-existent */
 108         __u8 num_received;      /* how many contacts we received */
 109         __u8 num_expected;      /* expected last contact index */
 110         __u8 maxcontacts;
 111         __u8 touches_by_report; /* how many touches are present in one report:
 112                                 * 1 means we should use a serial protocol
 113                                 * > 1 means hybrid (multitouch) protocol */
 114         bool serial_maybe;      /* need to check for serial protocol */
 115         bool curvalid;          /* is the current contact valid? */
 116         unsigned mt_flags;      /* flags to pass to input-mt */
 117 };
 118
 119 static void mt_post_parse_default_settings(struct mt_device *td);
 120 static void mt_post_parse(struct mt_device *td);
 121
 122 /* classes of device behavior */
 123 #define MT_CLS_DEFAULT                          0x0001
 124
 125 #define MT_CLS_SERIAL                           0x0002
 126 #define MT_CLS_CONFIDENCE                       0x0003
 127 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 128 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 129 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 130 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 131 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 132 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 133 #define MT_CLS_NSMU                             0x000a
 134 #define MT_CLS_DUAL_CONTACT_NUMBER              0x0010
 135 #define MT_CLS_DUAL_CONTACT_ID                  0x0011
 136
 137 /* vendor specific classes */
 138 #define MT_CLS_3M                               0x0101
 139 #define MT_CLS_CYPRESS                          0x0102
 140 #define MT_CLS_EGALAX                           0x0103
 141 #define MT_CLS_EGALAX_SERIAL                    0x0104
 142 #define MT_CLS_TOPSEED                          0x0105
 143 #define MT_CLS_PANASONIC                        0x0106
 144 #define MT_CLS_FLATFROG                         0x0107
 145 #define MT_CLS_GENERALTOUCH_TWOFINGERS          0x0108
 146 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS      0x0109
 147
 148 #define MT_DEFAULT_MAXCONTACT   10
 149 #define MT_MAX_MAXCONTACT       250
 150
 151 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 152 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 153
 154 /*
 155  * these device-dependent functions determine what slot corresponds
 156  * to a valid contact that was just read.
 157  */
 158
 159 static int cypress_compute_slot(struct mt_device *td)
 160 {
 161         if (td->curdata.contactid != 0 || td->num_received == 0)
 162                 return td->curdata.contactid;
 163         else
 164                 return -1;
 165 }
 166
 167 static struct mt_class mt_classes[] = {
 168         { .name = MT_CLS_DEFAULT,
 169                 .quirks = MT_QUIRK_ALWAYS_VALID |
 170                         MT_QUIRK_CONTACT_CNT_ACCURATE },
 171         { .name = MT_CLS_NSMU,
 172                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 173         { .name = MT_CLS_SERIAL,
 174                 .quirks = MT_QUIRK_ALWAYS_VALID},
 175         { .name = MT_CLS_CONFIDENCE,
 176                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 177         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 178                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 179                         MT_QUIRK_SLOT_IS_CONTACTID },
 180         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 181                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 182                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 183         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 184                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 185                         MT_QUIRK_SLOT_IS_CONTACTID,
 186                 .maxcontacts = 2 },
 187         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 188                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 189                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 190                 .maxcontacts = 2 },
 191         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 192                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 193                         MT_QUIRK_SLOT_IS_CONTACTID,
 194                 .maxcontacts = 2 },
 195         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 196                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 197                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 198         { .name = MT_CLS_DUAL_CONTACT_NUMBER,
 199                 .quirks = MT_QUIRK_ALWAYS_VALID |
 200                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 201                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 202                 .maxcontacts = 2 },
 203         { .name = MT_CLS_DUAL_CONTACT_ID,
 204                 .quirks = MT_QUIRK_ALWAYS_VALID |
 205                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 206                         MT_QUIRK_SLOT_IS_CONTACTID,
 207                 .maxcontacts = 2 },
 208
 209         /*
 210          * vendor specific classes
 211          */
 212         { .name = MT_CLS_3M,
 213                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 214                         MT_QUIRK_SLOT_IS_CONTACTID,
 215                 .sn_move = 2048,
 216                 .sn_width = 128,
 217                 .sn_height = 128,
 218                 .maxcontacts = 60,
 219         },
 220         { .name = MT_CLS_CYPRESS,
 221                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 222                         MT_QUIRK_CYPRESS,
 223                 .maxcontacts = 10 },
 224         { .name = MT_CLS_EGALAX,
 225                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 226                         MT_QUIRK_VALID_IS_INRANGE,
 227                 .sn_move = 4096,
 228                 .sn_pressure = 32,
 229         },
 230         { .name = MT_CLS_EGALAX_SERIAL,
 231                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 232                         MT_QUIRK_ALWAYS_VALID,
 233                 .sn_move = 4096,
 234                 .sn_pressure = 32,
 235         },
 236         { .name = MT_CLS_TOPSEED,
 237                 .quirks = MT_QUIRK_ALWAYS_VALID,
 238                 .is_indirect = true,
 239                 .maxcontacts = 2,
 240         },
 241         { .name = MT_CLS_PANASONIC,
 242                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 243                 .maxcontacts = 4 },
 244         { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
 245                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 246                         MT_QUIRK_VALID_IS_INRANGE |
 247                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 248                 .maxcontacts = 2
 249         },
 250         { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 251                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 252                         MT_QUIRK_SLOT_IS_CONTACTNUMBER
 253         },
 254
 255         { .name = MT_CLS_FLATFROG,
 256                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 257                         MT_QUIRK_NO_AREA,
 258                 .sn_move = 2048,
 259                 .maxcontacts = 40,
 260         },
 261         { }
 262 };
 263
 264 static void mt_free_input_name(struct hid_input *hi)
 265 {
 266         struct hid_device *hdev = hi->report->device;
 267         const char *name = hi->input->name;
 268
 269         if (name != hdev->name) {
 270                 hi->input->name = hdev->name;
 271                 kfree(name);
 272         }
 273 }
 274
 275 static ssize_t mt_show_quirks(struct device *dev,
 276                            struct device_attribute *attr,
 277                            char *buf)
 278 {
 279         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 280         struct mt_device *td = hid_get_drvdata(hdev);
 281
 282         return sprintf(buf, "%u\n", td->mtclass.quirks);
 283 }
 284
 285 static ssize_t mt_set_quirks(struct device *dev,
 286                           struct device_attribute *attr,
 287                           const char *buf, size_t count)
 288 {
 289         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 290         struct mt_device *td = hid_get_drvdata(hdev);
 291
 292         unsigned long val;
 293
 294         if (kstrtoul(buf, 0, &val))
 295                 return -EINVAL;
 296
 297         td->mtclass.quirks = val;
 298
 299         if (td->cc_index < 0)
 300                 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 301
 302         return count;
 303 }
 304
 305 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 306
 307 static struct attribute *sysfs_attrs[] = {
 308         &dev_attr_quirks.attr,
 309         NULL
 310 };
 311
 312 static struct attribute_group mt_attribute_group = {
 313         .attrs = sysfs_attrs
 314 };
 315
 316 static void mt_feature_mapping(struct hid_device *hdev,
 317                 struct hid_field *field, struct hid_usage *usage)
 318 {
 319         struct mt_device *td = hid_get_drvdata(hdev);
 320         int i;
 321
 322         switch (usage->hid) {
 323         case HID_DG_INPUTMODE:
 324                 td->inputmode = field->report->id;
 325                 td->inputmode_index = 0; /* has to be updated below */
 326
 327                 for (i=0; i < field->maxusage; i++) {
 328                         if (field->usage[i].hid == usage->hid) {
 329                                 td->inputmode_index = i;
 330                                 break;
 331                         }
 332                 }
 333
 334                 break;
 335         case HID_DG_CONTACTMAX:
 336                 td->maxcontact_report_id = field->report->id;
 337                 td->maxcontacts = field->value[0];
 338                 if (!td->maxcontacts &&
 339                     field->logical_maximum <= MT_MAX_MAXCONTACT)
 340                         td->maxcontacts = field->logical_maximum;
 341                 if (td->mtclass.maxcontacts)
 342                         /* check if the maxcontacts is given by the class */
 343                         td->maxcontacts = td->mtclass.maxcontacts;
 344
 345                 break;
 346         case 0xff0000c5:
 347                 if (field->report_count == 256 && field->report_size == 8) {
 348                         /* Win 8 devices need special quirks */
 349                         __s32 *quirks = &td->mtclass.quirks;
 350                         *quirks |= MT_QUIRK_ALWAYS_VALID;
 351                         *quirks |= MT_QUIRK_IGNORE_DUPLICATES;
 352                         *quirks |= MT_QUIRK_HOVERING;
 353                         *quirks |= MT_QUIRK_CONTACT_CNT_ACCURATE;
 354                         *quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 355                         *quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 356                         *quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 357                 }
 358                 break;
 359         }
 360 }
 361
 362 static void set_abs(struct input_dev *input, unsigned int code,
 363                 struct hid_field *field, int snratio)
 364 {
 365         int fmin = field->logical_minimum;
 366         int fmax = field->logical_maximum;
 367         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 368         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 369         input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
 370 }
 371
 372 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 373                 struct hid_input *hi)
 374 {
 375         struct mt_fields *f = td->fields;
 376
 377         if (f->length >= HID_MAX_FIELDS)
 378                 return;
 379
 380         f->usages[f->length++] = usage->hid;
 381 }
 382
 383 static int mt_pen_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 384                 struct hid_field *field, struct hid_usage *usage,
 385                 unsigned long **bit, int *max)
 386 {
 387         struct mt_device *td = hid_get_drvdata(hdev);
 388
 389         td->pen_report_id = field->report->id;
 390
 391         return 0;
 392 }
 393
 394 static int mt_pen_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 395                 struct hid_field *field, struct hid_usage *usage,
 396                 unsigned long **bit, int *max)
 397 {
 398         return 0;
 399 }
 400
 401 static int mt_pen_event(struct hid_device *hid, struct hid_field *field,
 402                                 struct hid_usage *usage, __s32 value)
 403 {
 404         /* let hid-input handle it */
 405         return 0;
 406 }
 407
 408 static void mt_pen_report(struct hid_device *hid, struct hid_report *report)
 409 {
 410         struct hid_field *field = report->field[0];
 411
 412         input_sync(field->hidinput->input);
 413 }
 414
 415 static void mt_pen_input_configured(struct hid_device *hdev,
 416                                         struct hid_input *hi)
 417 {
 418         char *name = kzalloc(strlen(hi->input->name) + 5, GFP_KERNEL);
 419         if (name) {
 420                 sprintf(name, "%s Pen", hi->input->name);
 421                 mt_free_input_name(hi);
 422                 hi->input->name = name;
 423         }
 424
 425         /* force BTN_STYLUS to allow tablet matching in udev */
 426         __set_bit(BTN_STYLUS, hi->input->keybit);
 427 }
 428
 429 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 430                 struct hid_field *field, struct hid_usage *usage,
 431                 unsigned long **bit, int *max)
 432 {
 433         struct mt_device *td = hid_get_drvdata(hdev);
 434         struct mt_class *cls = &td->mtclass;
 435         int code;
 436         struct hid_usage *prev_usage = NULL;
 437
 438         if (field->application == HID_DG_TOUCHSCREEN)
 439                 td->mt_flags |= INPUT_MT_DIRECT;
 440
 441         /*
 442          * Model touchscreens providing buttons as touchpads.
 443          */
 444         if (field->application == HID_DG_TOUCHPAD ||
 445             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
 446                 td->mt_flags |= INPUT_MT_POINTER;
 447
 448         if (usage->usage_index)
 449                 prev_usage = &field->usage[usage->usage_index - 1];
 450
 451         switch (usage->hid & HID_USAGE_PAGE) {
 452
 453         case HID_UP_GENDESK:
 454                 switch (usage->hid) {
 455                 case HID_GD_X:
 456                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 457                                 hid_map_usage(hi, usage, bit, max,
 458                                         EV_ABS, ABS_MT_TOOL_X);
 459                                 set_abs(hi->input, ABS_MT_TOOL_X, field,
 460                                         cls->sn_move);
 461                         } else {
 462                                 hid_map_usage(hi, usage, bit, max,
 463                                         EV_ABS, ABS_MT_POSITION_X);
 464                                 set_abs(hi->input, ABS_MT_POSITION_X, field,
 465                                         cls->sn_move);
 466                         }
 467
 468                         mt_store_field(usage, td, hi);
 469                         return 1;
 470                 case HID_GD_Y:
 471                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 472                                 hid_map_usage(hi, usage, bit, max,
 473                                         EV_ABS, ABS_MT_TOOL_Y);
 474                                 set_abs(hi->input, ABS_MT_TOOL_Y, field,
 475                                         cls->sn_move);
 476                         } else {
 477                                 hid_map_usage(hi, usage, bit, max,
 478                                         EV_ABS, ABS_MT_POSITION_Y);
 479                                 set_abs(hi->input, ABS_MT_POSITION_Y, field,
 480                                         cls->sn_move);
 481                         }
 482
 483                         mt_store_field(usage, td, hi);
 484                         return 1;
 485                 }
 486                 return 0;
 487
 488         case HID_UP_DIGITIZER:
 489                 switch (usage->hid) {
 490                 case HID_DG_INRANGE:
 491                         if (cls->quirks & MT_QUIRK_HOVERING) {
 492                                 hid_map_usage(hi, usage, bit, max,
 493                                         EV_ABS, ABS_MT_DISTANCE);
 494                                 input_set_abs_params(hi->input,
 495                                         ABS_MT_DISTANCE, 0, 1, 0, 0);
 496                         }
 497                         mt_store_field(usage, td, hi);
 498                         return 1;
 499                 case HID_DG_CONFIDENCE:
 500                         mt_store_field(usage, td, hi);
 501                         return 1;
 502                 case HID_DG_TIPSWITCH:
 503                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 504                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 505                         mt_store_field(usage, td, hi);
 506                         return 1;
 507                 case HID_DG_CONTACTID:
 508                         mt_store_field(usage, td, hi);
 509                         td->touches_by_report++;
 510                         td->mt_report_id = field->report->id;
 511                         return 1;
 512                 case HID_DG_WIDTH:
 513                         hid_map_usage(hi, usage, bit, max,
 514                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 515                         if (!(cls->quirks & MT_QUIRK_NO_AREA))
 516                                 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 517                                         cls->sn_width);
 518                         mt_store_field(usage, td, hi);
 519                         return 1;
 520                 case HID_DG_HEIGHT:
 521                         hid_map_usage(hi, usage, bit, max,
 522                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 523                         if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
 524                                 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 525                                         cls->sn_height);
 526                                 input_set_abs_params(hi->input,
 527                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 528                         }
 529                         mt_store_field(usage, td, hi);
 530                         return 1;
 531                 case HID_DG_TIPPRESSURE:
 532                         hid_map_usage(hi, usage, bit, max,
 533                                         EV_ABS, ABS_MT_PRESSURE);
 534                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 535                                 cls->sn_pressure);
 536                         mt_store_field(usage, td, hi);
 537                         return 1;
 538                 case HID_DG_CONTACTCOUNT:
 539                         td->cc_index = field->index;
 540                         td->cc_value_index = usage->usage_index;
 541                         return 1;
 542                 case HID_DG_CONTACTMAX:
 543                         /* we don't set td->last_slot_field as contactcount and
 544                          * contact max are global to the report */
 545                         return -1;
 546                 case HID_DG_TOUCH:
 547                         /* Legacy devices use TIPSWITCH and not TOUCH.
 548                          * Let's just ignore this field. */
 549                         return -1;
 550                 }
 551                 /* let hid-input decide for the others */
 552                 return 0;
 553
 554         case HID_UP_BUTTON:
 555                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 556                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 557                 input_set_capability(hi->input, EV_KEY, code);
 558                 return 1;
 559
 560         case 0xff000000:
 561                 /* we do not want to map these: no input-oriented meaning */
 562                 return -1;
 563         }
 564
 565         return 0;
 566 }
 567
 568 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 569                 struct hid_field *field, struct hid_usage *usage,
 570                 unsigned long **bit, int *max)
 571 {
 572         if (usage->type == EV_KEY || usage->type == EV_ABS)
 573                 set_bit(usage->type, hi->input->evbit);
 574
 575         return -1;
 576 }
 577
 578 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
 579 {
 580         __s32 quirks = td->mtclass.quirks;
 581
 582         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 583                 return td->curdata.contactid;
 584
 585         if (quirks & MT_QUIRK_CYPRESS)
 586                 return cypress_compute_slot(td);
 587
 588         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 589                 return td->num_received;
 590
 591         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 592                 return td->curdata.contactid - 1;
 593
 594         return input_mt_get_slot_by_key(input, td->curdata.contactid);
 595 }
 596
 597 /*
 598  * this function is called when a whole contact has been processed,
 599  * so that it can assign it to a slot and store the data there
 600  */
 601 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
 602 {
 603         if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
 604             td->num_received >= td->num_expected)
 605                 return;
 606
 607         if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
 608                 int slotnum = mt_compute_slot(td, input);
 609                 struct mt_slot *s = &td->curdata;
 610                 struct input_mt *mt = input->mt;
 611
 612                 if (slotnum < 0 || slotnum >= td->maxcontacts)
 613                         return;
 614
 615                 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
 616                         struct input_mt_slot *slot = &mt->slots[slotnum];
 617                         if (input_mt_is_active(slot) &&
 618                             input_mt_is_used(mt, slot))
 619                                 return;
 620                 }
 621
 622                 input_mt_slot(input, slotnum);
 623                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 624                         s->touch_state || s->inrange_state);
 625                 if (s->touch_state || s->inrange_state) {
 626                         /* this finger is in proximity of the sensor */
 627                         int wide = (s->w > s->h);
 628                         /* divided by two to match visual scale of touch */
 629                         int major = max(s->w, s->h) >> 1;
 630                         int minor = min(s->w, s->h) >> 1;
 631
 632                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 633                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 634                         input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
 635                         input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
 636                         input_event(input, EV_ABS, ABS_MT_DISTANCE,
 637                                 !s->touch_state);
 638                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 639                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 640                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 641                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 642                 }
 643         }
 644
 645         td->num_received++;
 646 }
 647
 648 /*
 649  * this function is called when a whole packet has been received and processed,
 650  * so that it can decide what to send to the input layer.
 651  */
 652 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 653 {
 654         input_mt_sync_frame(input);
 655         input_sync(input);
 656         td->num_received = 0;
 657 }
 658
 659 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
 660                                 struct hid_usage *usage, __s32 value)
 661 {
 662         /* we will handle the hidinput part later, now remains hiddev */
 663         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 664                 hid->hiddev_hid_event(hid, field, usage, value);
 665
 666         return 1;
 667 }
 668
 669 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
 670                                 struct hid_usage *usage, __s32 value)
 671 {
 672         struct mt_device *td = hid_get_drvdata(hid);
 673         __s32 quirks = td->mtclass.quirks;
 674         struct input_dev *input = field->hidinput->input;
 675
 676         if (hid->claimed & HID_CLAIMED_INPUT) {
 677                 switch (usage->hid) {
 678                 case HID_DG_INRANGE:
 679                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 680                                 td->curvalid = value;
 681                         if (quirks & MT_QUIRK_HOVERING)
 682                                 td->curdata.inrange_state = value;
 683                         break;
 684                 case HID_DG_TIPSWITCH:
 685                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 686                                 td->curvalid = value;
 687                         td->curdata.touch_state = value;
 688                         break;
 689                 case HID_DG_CONFIDENCE:
 690                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 691                                 td->curvalid = value;
 692                         break;
 693                 case HID_DG_CONTACTID:
 694                         td->curdata.contactid = value;
 695                         break;
 696                 case HID_DG_TIPPRESSURE:
 697                         td->curdata.p = value;
 698                         break;
 699                 case HID_GD_X:
 700                         if (usage->code == ABS_MT_TOOL_X)
 701                                 td->curdata.cx = value;
 702                         else
 703                                 td->curdata.x = value;
 704                         break;
 705                 case HID_GD_Y:
 706                         if (usage->code == ABS_MT_TOOL_Y)
 707                                 td->curdata.cy = value;
 708                         else
 709                                 td->curdata.y = value;
 710                         break;
 711                 case HID_DG_WIDTH:
 712                         td->curdata.w = value;
 713                         break;
 714                 case HID_DG_HEIGHT:
 715                         td->curdata.h = value;
 716                         break;
 717                 case HID_DG_CONTACTCOUNT:
 718                         break;
 719                 case HID_DG_TOUCH:
 720                         /* do nothing */
 721                         break;
 722
 723                 default:
 724                         if (usage->type)
 725                                 input_event(input, usage->type, usage->code,
 726                                                 value);
 727                         return;
 728                 }
 729
 730                 if (usage->usage_index + 1 == field->report_count) {
 731                         /* we only take into account the last report. */
 732                         if (usage->hid == td->last_slot_field)
 733                                 mt_complete_slot(td, field->hidinput->input);
 734                 }
 735
 736         }
 737 }
 738
 739 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
 740 {
 741         struct mt_device *td = hid_get_drvdata(hid);
 742         struct hid_field *field;
 743         unsigned count;
 744         int r, n;
 745
 746         /*
 747          * Includes multi-packet support where subsequent
 748          * packets are sent with zero contactcount.
 749          */
 750         if (td->cc_index >= 0) {
 751                 struct hid_field *field = report->field[td->cc_index];
 752                 int value = field->value[td->cc_value_index];
 753                 if (value)
 754                         td->num_expected = value;
 755         }
 756
 757         for (r = 0; r < report->maxfield; r++) {
 758                 field = report->field[r];
 759                 count = field->report_count;
 760
 761                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
 762                         continue;
 763
 764                 for (n = 0; n < count; n++)
 765                         mt_process_mt_event(hid, field, &field->usage[n],
 766                                         field->value[n]);
 767         }
 768
 769         if (td->num_received >= td->num_expected)
 770                 mt_sync_frame(td, report->field[0]->hidinput->input);
 771 }
 772
 773 static void mt_touch_input_configured(struct hid_device *hdev,
 774                                         struct hid_input *hi)
 775 {
 776         struct mt_device *td = hid_get_drvdata(hdev);
 777         struct mt_class *cls = &td->mtclass;
 778         struct input_dev *input = hi->input;
 779
 780         if (!td->maxcontacts)
 781                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 782
 783         mt_post_parse(td);
 784         if (td->serial_maybe)
 785                 mt_post_parse_default_settings(td);
 786
 787         if (cls->is_indirect)
 788                 td->mt_flags |= INPUT_MT_POINTER;
 789
 790         if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 791                 td->mt_flags |= INPUT_MT_DROP_UNUSED;
 792
 793         input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
 794
 795         td->mt_flags = 0;
 796 }
 797
 798 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 799                 struct hid_field *field, struct hid_usage *usage,
 800                 unsigned long **bit, int *max)
 801 {
 802         /* Only map fields from TouchScreen or TouchPad collections.
 803         * We need to ignore fields that belong to other collections
 804         * such as Mouse that might have the same GenericDesktop usages. */
 805         if (field->application != HID_DG_TOUCHSCREEN &&
 806             field->application != HID_DG_PEN &&
 807             field->application != HID_DG_TOUCHPAD)
 808                 return -1;
 809
 810         if (field->physical == HID_DG_STYLUS)
 811                 return mt_pen_input_mapping(hdev, hi, field, usage, bit, max);
 812
 813         return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
 814 }
 815
 816 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 817                 struct hid_field *field, struct hid_usage *usage,
 818                 unsigned long **bit, int *max)
 819 {
 820         if (field->physical == HID_DG_STYLUS)
 821                 return mt_pen_input_mapped(hdev, hi, field, usage, bit, max);
 822
 823         return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
 824 }
 825
 826 static int mt_event(struct hid_device *hid, struct hid_field *field,
 827                                 struct hid_usage *usage, __s32 value)
 828 {
 829         struct mt_device *td = hid_get_drvdata(hid);
 830
 831         if (field->report->id == td->mt_report_id)
 832                 return mt_touch_event(hid, field, usage, value);
 833
 834         if (field->report->id == td->pen_report_id)
 835                 return mt_pen_event(hid, field, usage, value);
 836
 837         /* ignore other reports */
 838         return 1;
 839 }
 840
 841 static void mt_report(struct hid_device *hid, struct hid_report *report)
 842 {
 843         struct mt_device *td = hid_get_drvdata(hid);
 844
 845         if (!(hid->claimed & HID_CLAIMED_INPUT))
 846                 return;
 847
 848         if (report->id == td->mt_report_id)
 849                 mt_touch_report(hid, report);
 850
 851         if (report->id == td->pen_report_id)
 852                 mt_pen_report(hid, report);
 853 }
 854
 855 static void mt_set_input_mode(struct hid_device *hdev)
 856 {
 857         struct mt_device *td = hid_get_drvdata(hdev);
 858         struct hid_report *r;
 859         struct hid_report_enum *re;
 860
 861         if (td->inputmode < 0)
 862                 return;
 863
 864         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 865         r = re->report_id_hash[td->inputmode];
 866         if (r) {
 867                 r->field[0]->value[td->inputmode_index] = 0x02;
 868                 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 869         }
 870 }
 871
 872 static void mt_set_maxcontacts(struct hid_device *hdev)
 873 {
 874         struct mt_device *td = hid_get_drvdata(hdev);
 875         struct hid_report *r;
 876         struct hid_report_enum *re;
 877         int fieldmax, max;
 878
 879         if (td->maxcontact_report_id < 0)
 880                 return;
 881
 882         if (!td->mtclass.maxcontacts)
 883                 return;
 884
 885         re = &hdev->report_enum[HID_FEATURE_REPORT];
 886         r = re->report_id_hash[td->maxcontact_report_id];
 887         if (r) {
 888                 max = td->mtclass.maxcontacts;
 889                 fieldmax = r->field[0]->logical_maximum;
 890                 max = min(fieldmax, max);
 891                 if (r->field[0]->value[0] != max) {
 892                         r->field[0]->value[0] = max;
 893                         hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 894                 }
 895         }
 896 }
 897
 898 static void mt_post_parse_default_settings(struct mt_device *td)
 899 {
 900         __s32 quirks = td->mtclass.quirks;
 901
 902         /* unknown serial device needs special quirks */
 903         if (td->touches_by_report == 1) {
 904                 quirks |= MT_QUIRK_ALWAYS_VALID;
 905                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 906                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 907                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 908                 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 909         }
 910
 911         td->mtclass.quirks = quirks;
 912 }
 913
 914 static void mt_post_parse(struct mt_device *td)
 915 {
 916         struct mt_fields *f = td->fields;
 917         struct mt_class *cls = &td->mtclass;
 918
 919         if (td->touches_by_report > 0) {
 920                 int field_count_per_touch = f->length / td->touches_by_report;
 921                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 922         }
 923
 924         if (td->cc_index < 0)
 925                 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 926 }
 927
 928 static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 929 {
 930         struct mt_device *td = hid_get_drvdata(hdev);
 931         char *name = kstrdup(hdev->name, GFP_KERNEL);
 932
 933         if (name)
 934                 hi->input->name = name;
 935
 936         if (hi->report->id == td->mt_report_id)
 937                 mt_touch_input_configured(hdev, hi);
 938
 939         if (hi->report->id == td->pen_report_id)
 940                 mt_pen_input_configured(hdev, hi);
 941 }
 942
 943 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 944 {
 945         int ret, i;
 946         struct mt_device *td;
 947         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 948         struct hid_input *hi;
 949
 950         for (i = 0; mt_classes[i].name ; i++) {
 951                 if (id->driver_data == mt_classes[i].name) {
 952                         mtclass = &(mt_classes[i]);
 953                         break;
 954                 }
 955         }
 956
 957         /* This allows the driver to correctly support devices
 958          * that emit events over several HID messages.
 959          */
 960         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 961
 962         /*
 963          * This allows the driver to handle different input sensors
 964          * that emits events through different reports on the same HID
 965          * device.
 966          */
 967         hdev->quirks |= HID_QUIRK_MULTI_INPUT;
 968         hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
 969
 970         td = kzalloc(sizeof(struct mt_device), GFP_KERNEL);
 971         if (!td) {
 972                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 973                 return -ENOMEM;
 974         }
 975         td->mtclass = *mtclass;
 976         td->inputmode = -1;
 977         td->maxcontact_report_id = -1;
 978         td->cc_index = -1;
 979         td->mt_report_id = -1;
 980         td->pen_report_id = -1;
 981         hid_set_drvdata(hdev, td);
 982
 983         td->fields = kzalloc(sizeof(struct mt_fields), GFP_KERNEL);
 984         if (!td->fields) {
 985                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 986                 ret = -ENOMEM;
 987                 goto fail;
 988         }
 989
 990         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 991                 td->serial_maybe = true;
 992
 993         ret = hid_parse(hdev);
 994         if (ret != 0)
 995                 goto fail;
 996
 997         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 998         if (ret)
 999                 goto hid_fail;
1000
1001         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1002
1003         mt_set_maxcontacts(hdev);
1004         mt_set_input_mode(hdev);
1005
1006         kfree(td->fields);
1007         td->fields = NULL;
1008
1009         return 0;
1010
1011 hid_fail:
1012         list_for_each_entry(hi, &hdev->inputs, list)
1013                 mt_free_input_name(hi);
1014 fail:
1015         kfree(td->fields);
1016         kfree(td);
1017         return ret;
1018 }
1019
1020 #ifdef CONFIG_PM
1021 static int mt_reset_resume(struct hid_device *hdev)
1022 {
1023         mt_set_maxcontacts(hdev);
1024         mt_set_input_mode(hdev);
1025         return 0;
1026 }
1027
1028 static int mt_resume(struct hid_device *hdev)
1029 {
1030         /* Some Elan legacy devices require SET_IDLE to be set on resume.
1031          * It should be safe to send it to other devices too.
1032          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1033
1034         hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1035
1036         return 0;
1037 }
1038 #endif
1039
1040 static void mt_remove(struct hid_device *hdev)
1041 {
1042         struct mt_device *td = hid_get_drvdata(hdev);
1043         struct hid_input *hi;
1044
1045         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1046         list_for_each_entry(hi, &hdev->inputs, list)
1047                 mt_free_input_name(hi);
1048
1049         hid_hw_stop(hdev);
1050
1051         kfree(td);
1052         hid_set_drvdata(hdev, NULL);
1053 }
1054
1055 static const struct hid_device_id mt_devices[] = {
1056
1057         /* 3M panels */
1058         { .driver_data = MT_CLS_3M,
1059                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1060                         USB_DEVICE_ID_3M1968) },
1061         { .driver_data = MT_CLS_3M,
1062                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1063                         USB_DEVICE_ID_3M2256) },
1064         { .driver_data = MT_CLS_3M,
1065                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1066                         USB_DEVICE_ID_3M3266) },
1067
1068         /* ActionStar panels */
1069         { .driver_data = MT_CLS_NSMU,
1070                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
1071                         USB_DEVICE_ID_ACTIONSTAR_1011) },
1072
1073         /* Atmel panels */
1074         { .driver_data = MT_CLS_SERIAL,
1075                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1076                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
1077         { .driver_data = MT_CLS_SERIAL,
1078                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1079                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1080
1081         /* Baanto multitouch devices */
1082         { .driver_data = MT_CLS_NSMU,
1083                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1084                         USB_DEVICE_ID_BAANTO_MT_190W2) },
1085         /* Cando panels */
1086         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1087                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1088                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1089         { .driver_data = MT_CLS_DUAL_CONTACT_NUMBER,
1090                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1091                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
1092         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1093                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1094                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
1095         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1096                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1097                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1098
1099         /* Chunghwa Telecom touch panels */
1100         {  .driver_data = MT_CLS_NSMU,
1101                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1102                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1103
1104         /* CVTouch panels */
1105         { .driver_data = MT_CLS_NSMU,
1106                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1107                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
1108
1109         /* Cypress panel */
1110         { .driver_data = MT_CLS_CYPRESS,
1111                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
1112                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
1113
1114         /* Data Modul easyMaxTouch */
1115         { .driver_data = MT_CLS_DEFAULT,
1116                 MT_USB_DEVICE(USB_VENDOR_ID_DATA_MODUL,
1117                         USB_VENDOR_ID_DATA_MODUL_EASYMAXTOUCH) },
1118
1119         /* eGalax devices (resistive) */
1120         { .driver_data = MT_CLS_EGALAX,
1121                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1122                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1123         { .driver_data = MT_CLS_EGALAX,
1124                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1125                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1126
1127         /* eGalax devices (capacitive) */
1128         { .driver_data = MT_CLS_EGALAX_SERIAL,
1129                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1130                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1131         { .driver_data = MT_CLS_EGALAX,
1132                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1133                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1134         { .driver_data = MT_CLS_EGALAX_SERIAL,
1135                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1136                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1137         { .driver_data = MT_CLS_EGALAX_SERIAL,
1138                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1139                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1140         { .driver_data = MT_CLS_EGALAX_SERIAL,
1141                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1142                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1143         { .driver_data = MT_CLS_EGALAX_SERIAL,
1144                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1145                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1146         { .driver_data = MT_CLS_EGALAX,
1147                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1148                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1149         { .driver_data = MT_CLS_EGALAX,
1150                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1151                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1152         { .driver_data = MT_CLS_EGALAX_SERIAL,
1153                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1154                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1155         { .driver_data = MT_CLS_EGALAX,
1156                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1157                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1158         { .driver_data = MT_CLS_EGALAX,
1159                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1160                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1161         { .driver_data = MT_CLS_EGALAX,
1162                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1163                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1164         { .driver_data = MT_CLS_EGALAX,
1165                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1166                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1167         { .driver_data = MT_CLS_EGALAX_SERIAL,
1168                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1169                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1170         { .driver_data = MT_CLS_EGALAX_SERIAL,
1171                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1172                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1173         { .driver_data = MT_CLS_EGALAX_SERIAL,
1174                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1175                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1176
1177         /* Elo TouchSystems IntelliTouch Plus panel */
1178         { .driver_data = MT_CLS_DUAL_CONTACT_ID,
1179                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
1180                         USB_DEVICE_ID_ELO_TS2515) },
1181
1182         /* Flatfrog Panels */
1183         { .driver_data = MT_CLS_FLATFROG,
1184                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1185                         USB_DEVICE_ID_MULTITOUCH_3200) },
1186
1187         /* GeneralTouch panel */
1188         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1189                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1190                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1191         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1192                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1193                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1194
1195         /* Gametel game controller */
1196         { .driver_data = MT_CLS_NSMU,
1197                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1198                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
1199
1200         /* GoodTouch panels */
1201         { .driver_data = MT_CLS_NSMU,
1202                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1203                         USB_DEVICE_ID_GOODTOUCH_000f) },
1204
1205         /* Hanvon panels */
1206         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1207                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1208                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1209
1210         /* Ideacom panel */
1211         { .driver_data = MT_CLS_SERIAL,
1212                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1213                         USB_DEVICE_ID_IDEACOM_IDC6650) },
1214         { .driver_data = MT_CLS_SERIAL,
1215                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1216                         USB_DEVICE_ID_IDEACOM_IDC6651) },
1217
1218         /* Ilitek dual touch panel */
1219         {  .driver_data = MT_CLS_NSMU,
1220                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1221                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1222
1223         /* IRTOUCH panels */
1224         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1225                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
1226                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
1227
1228         /* LG Display panels */
1229         { .driver_data = MT_CLS_DEFAULT,
1230                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
1231                         USB_DEVICE_ID_LG_MULTITOUCH) },
1232
1233         /* Lumio panels */
1234         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1235                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1236                         USB_DEVICE_ID_CRYSTALTOUCH) },
1237         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1238                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1239                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
1240
1241         /* MosArt panels */
1242         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1243                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1244                         USB_DEVICE_ID_ASUS_T91MT)},
1245         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1246                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1247                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1248         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1249                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1250                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1251
1252         /* Nexio panels */
1253         { .driver_data = MT_CLS_DEFAULT,
1254                 MT_USB_DEVICE(USB_VENDOR_ID_NEXIO,
1255                         USB_DEVICE_ID_NEXIO_MULTITOUCH_420)},
1256
1257         /* Panasonic panels */
1258         { .driver_data = MT_CLS_PANASONIC,
1259                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1260                         USB_DEVICE_ID_PANABOARD_UBT780) },
1261         { .driver_data = MT_CLS_PANASONIC,
1262                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1263                         USB_DEVICE_ID_PANABOARD_UBT880) },
1264
1265         /* Novatek Panel */
1266         { .driver_data = MT_CLS_NSMU,
1267                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1268                         USB_DEVICE_ID_NOVATEK_PCT) },
1269
1270         /* PenMount panels */
1271         { .driver_data = MT_CLS_CONFIDENCE,
1272                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1273                         USB_DEVICE_ID_PENMOUNT_PCI) },
1274
1275         /* PixArt optical touch screen */
1276         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1277                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1278                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1279         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1280                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1281                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1282         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1283                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1284                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1285
1286         /* PixCir-based panels */
1287         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1288                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1289                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1290         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1291                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1292                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1293
1294         /* Quanta-based panels */
1295         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1296                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1297                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1298         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1299                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1300                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1301         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1302                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1303                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1304
1305         /* Stantum panels */
1306         { .driver_data = MT_CLS_CONFIDENCE,
1307                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1308                         USB_DEVICE_ID_MTP)},
1309         { .driver_data = MT_CLS_CONFIDENCE,
1310                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1311                         USB_DEVICE_ID_MTP_STM)},
1312         { .driver_data = MT_CLS_DEFAULT,
1313                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1314                         USB_DEVICE_ID_MTP_SITRONIX)},
1315
1316         /* TopSeed panels */
1317         { .driver_data = MT_CLS_TOPSEED,
1318                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1319                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1320
1321         /* Touch International panels */
1322         { .driver_data = MT_CLS_NSMU,
1323                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1324                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1325
1326         /* Unitec panels */
1327         { .driver_data = MT_CLS_NSMU,
1328                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1329                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1330         { .driver_data = MT_CLS_NSMU,
1331                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1332                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1333         /* XAT */
1334         { .driver_data = MT_CLS_NSMU,
1335                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1336                         USB_DEVICE_ID_XAT_CSR) },
1337
1338         /* Xiroku */
1339         { .driver_data = MT_CLS_NSMU,
1340                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1341                         USB_DEVICE_ID_XIROKU_SPX) },
1342         { .driver_data = MT_CLS_NSMU,
1343                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1344                         USB_DEVICE_ID_XIROKU_MPX) },
1345         { .driver_data = MT_CLS_NSMU,
1346                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1347                         USB_DEVICE_ID_XIROKU_CSR) },
1348         { .driver_data = MT_CLS_NSMU,
1349                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1350                         USB_DEVICE_ID_XIROKU_SPX1) },
1351         { .driver_data = MT_CLS_NSMU,
1352                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1353                         USB_DEVICE_ID_XIROKU_MPX1) },
1354         { .driver_data = MT_CLS_NSMU,
1355                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1356                         USB_DEVICE_ID_XIROKU_CSR1) },
1357         { .driver_data = MT_CLS_NSMU,
1358                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1359                         USB_DEVICE_ID_XIROKU_SPX2) },
1360         { .driver_data = MT_CLS_NSMU,
1361                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1362                         USB_DEVICE_ID_XIROKU_MPX2) },
1363         { .driver_data = MT_CLS_NSMU,
1364                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1365                         USB_DEVICE_ID_XIROKU_CSR2) },
1366
1367         /* Zytronic panels */
1368         { .driver_data = MT_CLS_SERIAL,
1369                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1370                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1371
1372         /* Generic MT device */
1373         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1374         { }
1375 };
1376 MODULE_DEVICE_TABLE(hid, mt_devices);
1377
1378 static const struct hid_usage_id mt_grabbed_usages[] = {
1379         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1380         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1381 };
1382
1383 static struct hid_driver mt_driver = {
1384         .name = "hid-multitouch",
1385         .id_table = mt_devices,
1386         .probe = mt_probe,
1387         .remove = mt_remove,
1388         .input_mapping = mt_input_mapping,
1389         .input_mapped = mt_input_mapped,
1390         .input_configured = mt_input_configured,
1391         .feature_mapping = mt_feature_mapping,
1392         .usage_table = mt_grabbed_usages,
1393         .event = mt_event,
1394         .report = mt_report,
1395 #ifdef CONFIG_PM
1396         .reset_resume = mt_reset_resume,
1397         .resume = mt_resume,
1398 #endif
1399 };
1400 module_hid_driver(mt_driver);