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