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