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) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   6  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   7  *  Copyright (c) 2012-2013 Red Hat, Inc
   8  *
   9  *  This code is partly based on hid-egalax.c:
  10  *
  11  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  12  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  13  *  Copyright (c) 2010 Canonical, Ltd.
  14  *
  15  *  This code is partly based on hid-3m-pct.c:
  16  *
  17  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  18  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  19  *  Copyright (c) 2010      Canonical, Ltd.
  20  *
  21  */
  22
  23 /*
  24  * This program is free software; you can redistribute it and/or modify it
  25  * under the terms of the GNU General Public License as published by the Free
  26  * Software Foundation; either version 2 of the License, or (at your option)
  27  * any later version.
  28  */
  29
  30 /*
  31  * This driver is regularly tested thanks to the tool hid-test[1].
  32  * This tool relies on hid-replay[2] and a database of hid devices[3].
  33  * Please run these regression tests before patching this module so that
  34  * your patch won't break existing known devices.
  35  *
  36  * [1] https://github.com/bentiss/hid-test
  37  * [2] https://github.com/bentiss/hid-replay
  38  * [3] https://github.com/bentiss/hid-devices
  39  */
  40
  41 #include <linux/device.h>
  42 #include <linux/hid.h>
  43 #include <linux/module.h>
  44 #include <linux/slab.h>
  45 #include <linux/usb.h>
  46 #include <linux/input/mt.h>
  47 #include <linux/string.h>
  48
  49
  50 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  51 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  52 MODULE_DESCRIPTION("HID multitouch panels");
  53 MODULE_LICENSE("GPL");
  54
  55 #include "hid-ids.h"
  56
  57 /* quirks to control the device */
  58 #define MT_QUIRK_NOT_SEEN_MEANS_UP      (1 << 0)
  59 #define MT_QUIRK_SLOT_IS_CONTACTID      (1 << 1)
  60 #define MT_QUIRK_CYPRESS                (1 << 2)
  61 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  (1 << 3)
  62 #define MT_QUIRK_ALWAYS_VALID           (1 << 4)
  63 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
  64 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
  65 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
  66 #define MT_QUIRK_NO_AREA                (1 << 9)
  67 #define MT_QUIRK_IGNORE_DUPLICATES      (1 << 10)
  68 #define MT_QUIRK_HOVERING               (1 << 11)
  69 #define MT_QUIRK_CONTACT_CNT_ACCURATE   (1 << 12)
  70
  71 struct mt_slot {
  72         __s32 x, y, cx, cy, p, w, h;
  73         __s32 contactid;        /* the device ContactID assigned to this slot */
  74         bool touch_state;       /* is the touch valid? */
  75         bool inrange_state;     /* is the finger in proximity of the sensor? */
  76 };
  77
  78 struct mt_class {
  79         __s32 name;     /* MT_CLS */
  80         __s32 quirks;
  81         __s32 sn_move;  /* Signal/noise ratio for move events */
  82         __s32 sn_width; /* Signal/noise ratio for width events */
  83         __s32 sn_height;        /* Signal/noise ratio for height events */
  84         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
  85         __u8 maxcontacts;
  86         bool is_indirect;       /* true for touchpads */
  87 };
  88
  89 struct mt_fields {
  90         unsigned usages[HID_MAX_FIELDS];
  91         unsigned int length;
  92 };
  93
  94 struct mt_device {
  95         struct mt_slot curdata; /* placeholder of incoming data */
  96         struct mt_class mtclass;        /* our mt device class */
  97         struct mt_fields *fields;       /* temporary placeholder for storing the
  98                                            multitouch fields */
  99         int cc_index;   /* contact count field index in the report */
 100         int cc_value_index;     /* contact count value index in the field */
 101         unsigned last_slot_field;       /* the last field of a slot */
 102         unsigned mt_report_id;  /* the report ID of the multitouch device */
 103         unsigned pen_report_id; /* the report ID of the pen device */
 104         __s8 inputmode;         /* InputMode HID feature, -1 if non-existent */
 105         __s8 inputmode_index;   /* InputMode HID feature index in the report */
 106         __s8 maxcontact_report_id;      /* Maximum Contact Number HID feature,
 107                                    -1 if non-existent */
 108         __u8 num_received;      /* how many contacts we received */
 109         __u8 num_expected;      /* expected last contact index */
 110         __u8 maxcontacts;
 111         __u8 touches_by_report; /* how many touches are present in one report:
 112                                 * 1 means we should use a serial protocol
 113                                 * > 1 means hybrid (multitouch) protocol */
 114         bool serial_maybe;      /* need to check for serial protocol */
 115         bool curvalid;          /* is the current contact valid? */
 116         unsigned mt_flags;      /* flags to pass to input-mt */
 117 };
 118
 119 static void mt_post_parse_default_settings(struct mt_device *td);
 120 static void mt_post_parse(struct mt_device *td);
 121
 122 /* classes of device behavior */
 123 #define MT_CLS_DEFAULT                          0x0001
 124
 125 #define MT_CLS_SERIAL                           0x0002
 126 #define MT_CLS_CONFIDENCE                       0x0003
 127 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 128 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 129 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 130 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 131 #define MT_CLS_DUAL_NSMU_CONTACTID              0x0008
 132 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 133 #define MT_CLS_NSMU                             0x000a
 134 #define MT_CLS_DUAL_CONTACT_NUMBER              0x0010
 135 #define MT_CLS_DUAL_CONTACT_ID                  0x0011
 136 #define MT_CLS_WIN_8                            0x0012
 137
 138 /* vendor specific classes */
 139 #define MT_CLS_3M                               0x0101
 140 #define MT_CLS_CYPRESS                          0x0102
 141 #define MT_CLS_EGALAX                           0x0103
 142 #define MT_CLS_EGALAX_SERIAL                    0x0104
 143 #define MT_CLS_TOPSEED                          0x0105
 144 #define MT_CLS_PANASONIC                        0x0106
 145 #define MT_CLS_FLATFROG                         0x0107
 146 #define MT_CLS_GENERALTOUCH_TWOFINGERS          0x0108
 147 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS      0x0109
 148
 149 #define MT_DEFAULT_MAXCONTACT   10
 150 #define MT_MAX_MAXCONTACT       250
 151
 152 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 153 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 154
 155 /*
 156  * these device-dependent functions determine what slot corresponds
 157  * to a valid contact that was just read.
 158  */
 159
 160 static int cypress_compute_slot(struct mt_device *td)
 161 {
 162         if (td->curdata.contactid != 0 || td->num_received == 0)
 163                 return td->curdata.contactid;
 164         else
 165                 return -1;
 166 }
 167
 168 static struct mt_class mt_classes[] = {
 169         { .name = MT_CLS_DEFAULT,
 170                 .quirks = MT_QUIRK_ALWAYS_VALID |
 171                         MT_QUIRK_CONTACT_CNT_ACCURATE },
 172         { .name = MT_CLS_NSMU,
 173                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 174         { .name = MT_CLS_SERIAL,
 175                 .quirks = MT_QUIRK_ALWAYS_VALID},
 176         { .name = MT_CLS_CONFIDENCE,
 177                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 178         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 179                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 180                         MT_QUIRK_SLOT_IS_CONTACTID },
 181         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 182                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 183                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 184         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 185                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 186                         MT_QUIRK_SLOT_IS_CONTACTID,
 187                 .maxcontacts = 2 },
 188         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 189                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 190                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 191                 .maxcontacts = 2 },
 192         { .name = MT_CLS_DUAL_NSMU_CONTACTID,
 193                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 194                         MT_QUIRK_SLOT_IS_CONTACTID,
 195                 .maxcontacts = 2 },
 196         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 197                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 198                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 199         { .name = MT_CLS_DUAL_CONTACT_NUMBER,
 200                 .quirks = MT_QUIRK_ALWAYS_VALID |
 201                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 202                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 203                 .maxcontacts = 2 },
 204         { .name = MT_CLS_DUAL_CONTACT_ID,
 205                 .quirks = MT_QUIRK_ALWAYS_VALID |
 206                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 207                         MT_QUIRK_SLOT_IS_CONTACTID,
 208                 .maxcontacts = 2 },
 209         { .name = MT_CLS_WIN_8,
 210                 .quirks = MT_QUIRK_ALWAYS_VALID |
 211                         MT_QUIRK_IGNORE_DUPLICATES |
 212                         MT_QUIRK_HOVERING |
 213                         MT_QUIRK_CONTACT_CNT_ACCURATE },
 214
 215         /*
 216          * vendor specific classes
 217          */
 218         { .name = MT_CLS_3M,
 219                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 220                         MT_QUIRK_SLOT_IS_CONTACTID,
 221                 .sn_move = 2048,
 222                 .sn_width = 128,
 223                 .sn_height = 128,
 224                 .maxcontacts = 60,
 225         },
 226         { .name = MT_CLS_CYPRESS,
 227                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 228                         MT_QUIRK_CYPRESS,
 229                 .maxcontacts = 10 },
 230         { .name = MT_CLS_EGALAX,
 231                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 232                         MT_QUIRK_VALID_IS_INRANGE,
 233                 .sn_move = 4096,
 234                 .sn_pressure = 32,
 235         },
 236         { .name = MT_CLS_EGALAX_SERIAL,
 237                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 238                         MT_QUIRK_ALWAYS_VALID,
 239                 .sn_move = 4096,
 240                 .sn_pressure = 32,
 241         },
 242         { .name = MT_CLS_TOPSEED,
 243                 .quirks = MT_QUIRK_ALWAYS_VALID,
 244                 .is_indirect = true,
 245                 .maxcontacts = 2,
 246         },
 247         { .name = MT_CLS_PANASONIC,
 248                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 249                 .maxcontacts = 4 },
 250         { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
 251                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 252                         MT_QUIRK_VALID_IS_INRANGE |
 253                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 254                 .maxcontacts = 2
 255         },
 256         { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 257                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 258                         MT_QUIRK_SLOT_IS_CONTACTNUMBER
 259         },
 260
 261         { .name = MT_CLS_FLATFROG,
 262                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 263                         MT_QUIRK_NO_AREA,
 264                 .sn_move = 2048,
 265                 .maxcontacts = 40,
 266         },
 267         { }
 268 };
 269
 270 static ssize_t mt_show_quirks(struct device *dev,
 271                            struct device_attribute *attr,
 272                            char *buf)
 273 {
 274         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 275         struct mt_device *td = hid_get_drvdata(hdev);
 276
 277         return sprintf(buf, "%u\n", td->mtclass.quirks);
 278 }
 279
 280 static ssize_t mt_set_quirks(struct device *dev,
 281                           struct device_attribute *attr,
 282                           const char *buf, size_t count)
 283 {
 284         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
 285         struct mt_device *td = hid_get_drvdata(hdev);
 286
 287         unsigned long val;
 288
 289         if (kstrtoul(buf, 0, &val))
 290                 return -EINVAL;
 291
 292         td->mtclass.quirks = val;
 293
 294         if (td->cc_index < 0)
 295                 td->mtclass.quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 296
 297         return count;
 298 }
 299
 300 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 301
 302 static struct attribute *sysfs_attrs[] = {
 303         &dev_attr_quirks.attr,
 304         NULL
 305 };
 306
 307 static struct attribute_group mt_attribute_group = {
 308         .attrs = sysfs_attrs
 309 };
 310
 311 static void mt_feature_mapping(struct hid_device *hdev,
 312                 struct hid_field *field, struct hid_usage *usage)
 313 {
 314         struct mt_device *td = hid_get_drvdata(hdev);
 315         int i;
 316
 317         switch (usage->hid) {
 318         case HID_DG_INPUTMODE:
 319                 td->inputmode = field->report->id;
 320                 td->inputmode_index = 0; /* has to be updated below */
 321
 322                 for (i=0; i < field->maxusage; i++) {
 323                         if (field->usage[i].hid == usage->hid) {
 324                                 td->inputmode_index = i;
 325                                 break;
 326                         }
 327                 }
 328
 329                 break;
 330         case HID_DG_CONTACTMAX:
 331                 td->maxcontact_report_id = field->report->id;
 332                 td->maxcontacts = field->value[0];
 333                 if (!td->maxcontacts &&
 334                     field->logical_maximum <= MT_MAX_MAXCONTACT)
 335                         td->maxcontacts = field->logical_maximum;
 336                 if (td->mtclass.maxcontacts)
 337                         /* check if the maxcontacts is given by the class */
 338                         td->maxcontacts = td->mtclass.maxcontacts;
 339
 340                 break;
 341         }
 342 }
 343
 344 static void set_abs(struct input_dev *input, unsigned int code,
 345                 struct hid_field *field, int snratio)
 346 {
 347         int fmin = field->logical_minimum;
 348         int fmax = field->logical_maximum;
 349         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 350         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 351         input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
 352 }
 353
 354 static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
 355                 struct hid_input *hi)
 356 {
 357         struct mt_fields *f = td->fields;
 358
 359         if (f->length >= HID_MAX_FIELDS)
 360                 return;
 361
 362         f->usages[f->length++] = usage->hid;
 363 }
 364
 365 static int mt_pen_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 366                 struct hid_field *field, struct hid_usage *usage,
 367                 unsigned long **bit, int *max)
 368 {
 369         struct mt_device *td = hid_get_drvdata(hdev);
 370
 371         td->pen_report_id = field->report->id;
 372
 373         return 0;
 374 }
 375
 376 static int mt_pen_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 377                 struct hid_field *field, struct hid_usage *usage,
 378                 unsigned long **bit, int *max)
 379 {
 380         return 0;
 381 }
 382
 383 static int mt_pen_event(struct hid_device *hid, struct hid_field *field,
 384                                 struct hid_usage *usage, __s32 value)
 385 {
 386         /* let hid-input handle it */
 387         return 0;
 388 }
 389
 390 static void mt_pen_report(struct hid_device *hid, struct hid_report *report)
 391 {
 392         struct hid_field *field = report->field[0];
 393
 394         input_sync(field->hidinput->input);
 395 }
 396
 397 static void mt_pen_input_configured(struct hid_device *hdev,
 398                                         struct hid_input *hi)
 399 {
 400         /* force BTN_STYLUS to allow tablet matching in udev */
 401         __set_bit(BTN_STYLUS, hi->input->keybit);
 402 }
 403
 404 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 405                 struct hid_field *field, struct hid_usage *usage,
 406                 unsigned long **bit, int *max)
 407 {
 408         struct mt_device *td = hid_get_drvdata(hdev);
 409         struct mt_class *cls = &td->mtclass;
 410         int code;
 411         struct hid_usage *prev_usage = NULL;
 412
 413         if (field->application == HID_DG_TOUCHSCREEN)
 414                 td->mt_flags |= INPUT_MT_DIRECT;
 415
 416         /*
 417          * Model touchscreens providing buttons as touchpads.
 418          */
 419         if (field->application == HID_DG_TOUCHPAD ||
 420             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
 421                 td->mt_flags |= INPUT_MT_POINTER;
 422
 423         if (usage->usage_index)
 424                 prev_usage = &field->usage[usage->usage_index - 1];
 425
 426         switch (usage->hid & HID_USAGE_PAGE) {
 427
 428         case HID_UP_GENDESK:
 429                 switch (usage->hid) {
 430                 case HID_GD_X:
 431                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 432                                 hid_map_usage(hi, usage, bit, max,
 433                                         EV_ABS, ABS_MT_TOOL_X);
 434                                 set_abs(hi->input, ABS_MT_TOOL_X, field,
 435                                         cls->sn_move);
 436                         } else {
 437                                 hid_map_usage(hi, usage, bit, max,
 438                                         EV_ABS, ABS_MT_POSITION_X);
 439                                 set_abs(hi->input, ABS_MT_POSITION_X, field,
 440                                         cls->sn_move);
 441                         }
 442
 443                         mt_store_field(usage, td, hi);
 444                         return 1;
 445                 case HID_GD_Y:
 446                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 447                                 hid_map_usage(hi, usage, bit, max,
 448                                         EV_ABS, ABS_MT_TOOL_Y);
 449                                 set_abs(hi->input, ABS_MT_TOOL_Y, field,
 450                                         cls->sn_move);
 451                         } else {
 452                                 hid_map_usage(hi, usage, bit, max,
 453                                         EV_ABS, ABS_MT_POSITION_Y);
 454                                 set_abs(hi->input, ABS_MT_POSITION_Y, field,
 455                                         cls->sn_move);
 456                         }
 457
 458                         mt_store_field(usage, td, hi);
 459                         return 1;
 460                 }
 461                 return 0;
 462
 463         case HID_UP_DIGITIZER:
 464                 switch (usage->hid) {
 465                 case HID_DG_INRANGE:
 466                         if (cls->quirks & MT_QUIRK_HOVERING) {
 467                                 hid_map_usage(hi, usage, bit, max,
 468                                         EV_ABS, ABS_MT_DISTANCE);
 469                                 input_set_abs_params(hi->input,
 470                                         ABS_MT_DISTANCE, 0, 1, 0, 0);
 471                         }
 472                         mt_store_field(usage, td, hi);
 473                         return 1;
 474                 case HID_DG_CONFIDENCE:
 475                         mt_store_field(usage, td, hi);
 476                         return 1;
 477                 case HID_DG_TIPSWITCH:
 478                         hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
 479                         input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
 480                         mt_store_field(usage, td, hi);
 481                         return 1;
 482                 case HID_DG_CONTACTID:
 483                         mt_store_field(usage, td, hi);
 484                         td->touches_by_report++;
 485                         td->mt_report_id = field->report->id;
 486                         return 1;
 487                 case HID_DG_WIDTH:
 488                         hid_map_usage(hi, usage, bit, max,
 489                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
 490                         if (!(cls->quirks & MT_QUIRK_NO_AREA))
 491                                 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 492                                         cls->sn_width);
 493                         mt_store_field(usage, td, hi);
 494                         return 1;
 495                 case HID_DG_HEIGHT:
 496                         hid_map_usage(hi, usage, bit, max,
 497                                         EV_ABS, ABS_MT_TOUCH_MINOR);
 498                         if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
 499                                 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 500                                         cls->sn_height);
 501                                 input_set_abs_params(hi->input,
 502                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
 503                         }
 504                         mt_store_field(usage, td, hi);
 505                         return 1;
 506                 case HID_DG_TIPPRESSURE:
 507                         hid_map_usage(hi, usage, bit, max,
 508                                         EV_ABS, ABS_MT_PRESSURE);
 509                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 510                                 cls->sn_pressure);
 511                         mt_store_field(usage, td, hi);
 512                         return 1;
 513                 case HID_DG_CONTACTCOUNT:
 514                         td->cc_index = field->index;
 515                         td->cc_value_index = usage->usage_index;
 516                         return 1;
 517                 case HID_DG_CONTACTMAX:
 518                         /* we don't set td->last_slot_field as contactcount and
 519                          * contact max are global to the report */
 520                         return -1;
 521                 case HID_DG_TOUCH:
 522                         /* Legacy devices use TIPSWITCH and not TOUCH.
 523                          * Let's just ignore this field. */
 524                         return -1;
 525                 }
 526                 /* let hid-input decide for the others */
 527                 return 0;
 528
 529         case HID_UP_BUTTON:
 530                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 531                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 532                 input_set_capability(hi->input, EV_KEY, code);
 533                 return 1;
 534
 535         case 0xff000000:
 536                 /* we do not want to map these: no input-oriented meaning */
 537                 return -1;
 538         }
 539
 540         return 0;
 541 }
 542
 543 static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 544                 struct hid_field *field, struct hid_usage *usage,
 545                 unsigned long **bit, int *max)
 546 {
 547         if (usage->type == EV_KEY || usage->type == EV_ABS)
 548                 set_bit(usage->type, hi->input->evbit);
 549
 550         return -1;
 551 }
 552
 553 static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
 554 {
 555         __s32 quirks = td->mtclass.quirks;
 556
 557         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 558                 return td->curdata.contactid;
 559
 560         if (quirks & MT_QUIRK_CYPRESS)
 561                 return cypress_compute_slot(td);
 562
 563         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 564                 return td->num_received;
 565
 566         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 567                 return td->curdata.contactid - 1;
 568
 569         return input_mt_get_slot_by_key(input, td->curdata.contactid);
 570 }
 571
 572 /*
 573  * this function is called when a whole contact has been processed,
 574  * so that it can assign it to a slot and store the data there
 575  */
 576 static void mt_complete_slot(struct mt_device *td, struct input_dev *input)
 577 {
 578         if ((td->mtclass.quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
 579             td->num_received >= td->num_expected)
 580                 return;
 581
 582         if (td->curvalid || (td->mtclass.quirks & MT_QUIRK_ALWAYS_VALID)) {
 583                 int slotnum = mt_compute_slot(td, input);
 584                 struct mt_slot *s = &td->curdata;
 585                 struct input_mt *mt = input->mt;
 586
 587                 if (slotnum < 0 || slotnum >= td->maxcontacts)
 588                         return;
 589
 590                 if ((td->mtclass.quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
 591                         struct input_mt_slot *slot = &mt->slots[slotnum];
 592                         if (input_mt_is_active(slot) &&
 593                             input_mt_is_used(mt, slot))
 594                                 return;
 595                 }
 596
 597                 input_mt_slot(input, slotnum);
 598                 input_mt_report_slot_state(input, MT_TOOL_FINGER,
 599                         s->touch_state || s->inrange_state);
 600                 if (s->touch_state || s->inrange_state) {
 601                         /* this finger is in proximity of the sensor */
 602                         int wide = (s->w > s->h);
 603                         /* divided by two to match visual scale of touch */
 604                         int major = max(s->w, s->h) >> 1;
 605                         int minor = min(s->w, s->h) >> 1;
 606
 607                         input_event(input, EV_ABS, ABS_MT_POSITION_X, s->x);
 608                         input_event(input, EV_ABS, ABS_MT_POSITION_Y, s->y);
 609                         input_event(input, EV_ABS, ABS_MT_TOOL_X, s->cx);
 610                         input_event(input, EV_ABS, ABS_MT_TOOL_Y, s->cy);
 611                         input_event(input, EV_ABS, ABS_MT_DISTANCE,
 612                                 !s->touch_state);
 613                         input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
 614                         input_event(input, EV_ABS, ABS_MT_PRESSURE, s->p);
 615                         input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
 616                         input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
 617                 }
 618         }
 619
 620         td->num_received++;
 621 }
 622
 623 /*
 624  * this function is called when a whole packet has been received and processed,
 625  * so that it can decide what to send to the input layer.
 626  */
 627 static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
 628 {
 629         input_mt_sync_frame(input);
 630         input_sync(input);
 631         td->num_received = 0;
 632 }
 633
 634 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
 635                                 struct hid_usage *usage, __s32 value)
 636 {
 637         /* we will handle the hidinput part later, now remains hiddev */
 638         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
 639                 hid->hiddev_hid_event(hid, field, usage, value);
 640
 641         return 1;
 642 }
 643
 644 static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
 645                                 struct hid_usage *usage, __s32 value)
 646 {
 647         struct mt_device *td = hid_get_drvdata(hid);
 648         __s32 quirks = td->mtclass.quirks;
 649         struct input_dev *input = field->hidinput->input;
 650
 651         if (hid->claimed & HID_CLAIMED_INPUT) {
 652                 switch (usage->hid) {
 653                 case HID_DG_INRANGE:
 654                         if (quirks & MT_QUIRK_VALID_IS_INRANGE)
 655                                 td->curvalid = value;
 656                         if (quirks & MT_QUIRK_HOVERING)
 657                                 td->curdata.inrange_state = value;
 658                         break;
 659                 case HID_DG_TIPSWITCH:
 660                         if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 661                                 td->curvalid = value;
 662                         td->curdata.touch_state = value;
 663                         break;
 664                 case HID_DG_CONFIDENCE:
 665                         if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
 666                                 td->curvalid = value;
 667                         break;
 668                 case HID_DG_CONTACTID:
 669                         td->curdata.contactid = value;
 670                         break;
 671                 case HID_DG_TIPPRESSURE:
 672                         td->curdata.p = value;
 673                         break;
 674                 case HID_GD_X:
 675                         if (usage->code == ABS_MT_TOOL_X)
 676                                 td->curdata.cx = value;
 677                         else
 678                                 td->curdata.x = value;
 679                         break;
 680                 case HID_GD_Y:
 681                         if (usage->code == ABS_MT_TOOL_Y)
 682                                 td->curdata.cy = value;
 683                         else
 684                                 td->curdata.y = value;
 685                         break;
 686                 case HID_DG_WIDTH:
 687                         td->curdata.w = value;
 688                         break;
 689                 case HID_DG_HEIGHT:
 690                         td->curdata.h = value;
 691                         break;
 692                 case HID_DG_CONTACTCOUNT:
 693                         break;
 694                 case HID_DG_TOUCH:
 695                         /* do nothing */
 696                         break;
 697
 698                 default:
 699                         if (usage->type)
 700                                 input_event(input, usage->type, usage->code,
 701                                                 value);
 702                         return;
 703                 }
 704
 705                 if (usage->usage_index + 1 == field->report_count) {
 706                         /* we only take into account the last report. */
 707                         if (usage->hid == td->last_slot_field)
 708                                 mt_complete_slot(td, field->hidinput->input);
 709                 }
 710
 711         }
 712 }
 713
 714 static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
 715 {
 716         struct mt_device *td = hid_get_drvdata(hid);
 717         struct hid_field *field;
 718         unsigned count;
 719         int r, n;
 720
 721         /*
 722          * Includes multi-packet support where subsequent
 723          * packets are sent with zero contactcount.
 724          */
 725         if (td->cc_index >= 0) {
 726                 struct hid_field *field = report->field[td->cc_index];
 727                 int value = field->value[td->cc_value_index];
 728                 if (value)
 729                         td->num_expected = value;
 730         }
 731
 732         for (r = 0; r < report->maxfield; r++) {
 733                 field = report->field[r];
 734                 count = field->report_count;
 735
 736                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
 737                         continue;
 738
 739                 for (n = 0; n < count; n++)
 740                         mt_process_mt_event(hid, field, &field->usage[n],
 741                                         field->value[n]);
 742         }
 743
 744         if (td->num_received >= td->num_expected)
 745                 mt_sync_frame(td, report->field[0]->hidinput->input);
 746 }
 747
 748 static void mt_touch_input_configured(struct hid_device *hdev,
 749                                         struct hid_input *hi)
 750 {
 751         struct mt_device *td = hid_get_drvdata(hdev);
 752         struct mt_class *cls = &td->mtclass;
 753         struct input_dev *input = hi->input;
 754
 755         if (!td->maxcontacts)
 756                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
 757
 758         mt_post_parse(td);
 759         if (td->serial_maybe)
 760                 mt_post_parse_default_settings(td);
 761
 762         if (cls->is_indirect)
 763                 td->mt_flags |= INPUT_MT_POINTER;
 764
 765         if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
 766                 td->mt_flags |= INPUT_MT_DROP_UNUSED;
 767
 768         input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
 769
 770         td->mt_flags = 0;
 771 }
 772
 773 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 774                 struct hid_field *field, struct hid_usage *usage,
 775                 unsigned long **bit, int *max)
 776 {
 777         /* Only map fields from TouchScreen or TouchPad collections.
 778         * We need to ignore fields that belong to other collections
 779         * such as Mouse that might have the same GenericDesktop usages. */
 780         if (field->application != HID_DG_TOUCHSCREEN &&
 781             field->application != HID_DG_PEN &&
 782             field->application != HID_DG_TOUCHPAD)
 783                 return -1;
 784
 785         if (field->physical == HID_DG_STYLUS)
 786                 return mt_pen_input_mapping(hdev, hi, field, usage, bit, max);
 787
 788         return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
 789 }
 790
 791 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 792                 struct hid_field *field, struct hid_usage *usage,
 793                 unsigned long **bit, int *max)
 794 {
 795         if (field->physical == HID_DG_STYLUS)
 796                 return mt_pen_input_mapped(hdev, hi, field, usage, bit, max);
 797
 798         return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
 799 }
 800
 801 static int mt_event(struct hid_device *hid, struct hid_field *field,
 802                                 struct hid_usage *usage, __s32 value)
 803 {
 804         struct mt_device *td = hid_get_drvdata(hid);
 805
 806         if (field->report->id == td->mt_report_id)
 807                 return mt_touch_event(hid, field, usage, value);
 808
 809         if (field->report->id == td->pen_report_id)
 810                 return mt_pen_event(hid, field, usage, value);
 811
 812         /* ignore other reports */
 813         return 1;
 814 }
 815
 816 static void mt_report(struct hid_device *hid, struct hid_report *report)
 817 {
 818         struct mt_device *td = hid_get_drvdata(hid);
 819
 820         if (!(hid->claimed & HID_CLAIMED_INPUT))
 821                 return;
 822
 823         if (report->id == td->mt_report_id)
 824                 mt_touch_report(hid, report);
 825
 826         if (report->id == td->pen_report_id)
 827                 mt_pen_report(hid, report);
 828 }
 829
 830 static void mt_set_input_mode(struct hid_device *hdev)
 831 {
 832         struct mt_device *td = hid_get_drvdata(hdev);
 833         struct hid_report *r;
 834         struct hid_report_enum *re;
 835
 836         if (td->inputmode < 0)
 837                 return;
 838
 839         re = &(hdev->report_enum[HID_FEATURE_REPORT]);
 840         r = re->report_id_hash[td->inputmode];
 841         if (r) {
 842                 r->field[0]->value[td->inputmode_index] = 0x02;
 843                 hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 844         }
 845 }
 846
 847 static void mt_set_maxcontacts(struct hid_device *hdev)
 848 {
 849         struct mt_device *td = hid_get_drvdata(hdev);
 850         struct hid_report *r;
 851         struct hid_report_enum *re;
 852         int fieldmax, max;
 853
 854         if (td->maxcontact_report_id < 0)
 855                 return;
 856
 857         if (!td->mtclass.maxcontacts)
 858                 return;
 859
 860         re = &hdev->report_enum[HID_FEATURE_REPORT];
 861         r = re->report_id_hash[td->maxcontact_report_id];
 862         if (r) {
 863                 max = td->mtclass.maxcontacts;
 864                 fieldmax = r->field[0]->logical_maximum;
 865                 max = min(fieldmax, max);
 866                 if (r->field[0]->value[0] != max) {
 867                         r->field[0]->value[0] = max;
 868                         hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
 869                 }
 870         }
 871 }
 872
 873 static void mt_post_parse_default_settings(struct mt_device *td)
 874 {
 875         __s32 quirks = td->mtclass.quirks;
 876
 877         /* unknown serial device needs special quirks */
 878         if (td->touches_by_report == 1) {
 879                 quirks |= MT_QUIRK_ALWAYS_VALID;
 880                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
 881                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
 882                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
 883                 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 884         }
 885
 886         td->mtclass.quirks = quirks;
 887 }
 888
 889 static void mt_post_parse(struct mt_device *td)
 890 {
 891         struct mt_fields *f = td->fields;
 892         struct mt_class *cls = &td->mtclass;
 893
 894         if (td->touches_by_report > 0) {
 895                 int field_count_per_touch = f->length / td->touches_by_report;
 896                 td->last_slot_field = f->usages[field_count_per_touch - 1];
 897         }
 898
 899         if (td->cc_index < 0)
 900                 cls->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 901 }
 902
 903 static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 904 {
 905         struct mt_device *td = hid_get_drvdata(hdev);
 906         char *name;
 907         const char *suffix = NULL;
 908
 909         if (hi->report->id == td->mt_report_id)
 910                 mt_touch_input_configured(hdev, hi);
 911
 912         if (hi->report->field[0]->physical == HID_DG_STYLUS) {
 913                 suffix = "Pen";
 914                 mt_pen_input_configured(hdev, hi);
 915         }
 916
 917         if (suffix) {
 918                 name = devm_kzalloc(&hi->input->dev,
 919                                     strlen(hdev->name) + strlen(suffix) + 2,
 920                                     GFP_KERNEL);
 921                 if (name) {
 922                         sprintf(name, "%s %s", hdev->name, suffix);
 923                         hi->input->name = name;
 924                 }
 925         }
 926 }
 927
 928 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 929 {
 930         int ret, i;
 931         struct mt_device *td;
 932         struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
 933
 934         for (i = 0; mt_classes[i].name ; i++) {
 935                 if (id->driver_data == mt_classes[i].name) {
 936                         mtclass = &(mt_classes[i]);
 937                         break;
 938                 }
 939         }
 940
 941         /* This allows the driver to correctly support devices
 942          * that emit events over several HID messages.
 943          */
 944         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
 945
 946         /*
 947          * This allows the driver to handle different input sensors
 948          * that emits events through different reports on the same HID
 949          * device.
 950          */
 951         hdev->quirks |= HID_QUIRK_MULTI_INPUT;
 952         hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT;
 953
 954         td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
 955         if (!td) {
 956                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
 957                 return -ENOMEM;
 958         }
 959         td->mtclass = *mtclass;
 960         td->inputmode = -1;
 961         td->maxcontact_report_id = -1;
 962         td->cc_index = -1;
 963         td->mt_report_id = -1;
 964         td->pen_report_id = -1;
 965         hid_set_drvdata(hdev, td);
 966
 967         td->fields = devm_kzalloc(&hdev->dev, sizeof(struct mt_fields),
 968                                   GFP_KERNEL);
 969         if (!td->fields) {
 970                 dev_err(&hdev->dev, "cannot allocate multitouch fields data\n");
 971                 return -ENOMEM;
 972         }
 973
 974         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
 975                 td->serial_maybe = true;
 976
 977         ret = hid_parse(hdev);
 978         if (ret != 0)
 979                 return ret;
 980
 981         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 982         if (ret)
 983                 return ret;
 984
 985         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
 986
 987         mt_set_maxcontacts(hdev);
 988         mt_set_input_mode(hdev);
 989
 990         /* release .fields memory as it is not used anymore */
 991         devm_kfree(&hdev->dev, td->fields);
 992         td->fields = NULL;
 993
 994         return 0;
 995 }
 996
 997 #ifdef CONFIG_PM
 998 static int mt_reset_resume(struct hid_device *hdev)
 999 {
1000         mt_set_maxcontacts(hdev);
1001         mt_set_input_mode(hdev);
1002         return 0;
1003 }
1004
1005 static int mt_resume(struct hid_device *hdev)
1006 {
1007         /* Some Elan legacy devices require SET_IDLE to be set on resume.
1008          * It should be safe to send it to other devices too.
1009          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1010
1011         hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1012
1013         return 0;
1014 }
1015 #endif
1016
1017 static void mt_remove(struct hid_device *hdev)
1018 {
1019         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1020         hid_hw_stop(hdev);
1021 }
1022
1023 static const struct hid_device_id mt_devices[] = {
1024
1025         /* 3M panels */
1026         { .driver_data = MT_CLS_3M,
1027                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1028                         USB_DEVICE_ID_3M1968) },
1029         { .driver_data = MT_CLS_3M,
1030                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1031                         USB_DEVICE_ID_3M2256) },
1032         { .driver_data = MT_CLS_3M,
1033                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1034                         USB_DEVICE_ID_3M3266) },
1035
1036         /* ActionStar panels */
1037         { .driver_data = MT_CLS_NSMU,
1038                 MT_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR,
1039                         USB_DEVICE_ID_ACTIONSTAR_1011) },
1040
1041         /* Atmel panels */
1042         { .driver_data = MT_CLS_SERIAL,
1043                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1044                         USB_DEVICE_ID_ATMEL_MULTITOUCH) },
1045         { .driver_data = MT_CLS_SERIAL,
1046                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1047                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1048
1049         /* Baanto multitouch devices */
1050         { .driver_data = MT_CLS_NSMU,
1051                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1052                         USB_DEVICE_ID_BAANTO_MT_190W2) },
1053         /* Cando panels */
1054         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1055                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1056                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1057         { .driver_data = MT_CLS_DUAL_CONTACT_NUMBER,
1058                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1059                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_10_1) },
1060         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1061                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1062                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },
1063         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1064                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1065                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1066
1067         /* Chunghwa Telecom touch panels */
1068         {  .driver_data = MT_CLS_NSMU,
1069                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1070                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1071
1072         /* CVTouch panels */
1073         { .driver_data = MT_CLS_NSMU,
1074                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1075                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
1076
1077         /* Cypress panel */
1078         { .driver_data = MT_CLS_CYPRESS,
1079                 HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
1080                         USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
1081
1082         /* Data Modul easyMaxTouch */
1083         { .driver_data = MT_CLS_DEFAULT,
1084                 MT_USB_DEVICE(USB_VENDOR_ID_DATA_MODUL,
1085                         USB_VENDOR_ID_DATA_MODUL_EASYMAXTOUCH) },
1086
1087         /* eGalax devices (resistive) */
1088         { .driver_data = MT_CLS_EGALAX,
1089                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1090                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1091         { .driver_data = MT_CLS_EGALAX,
1092                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1093                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1094
1095         /* eGalax devices (capacitive) */
1096         { .driver_data = MT_CLS_EGALAX_SERIAL,
1097                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1098                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1099         { .driver_data = MT_CLS_EGALAX,
1100                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1101                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1102         { .driver_data = MT_CLS_EGALAX_SERIAL,
1103                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1104                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1105         { .driver_data = MT_CLS_EGALAX_SERIAL,
1106                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1107                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1108         { .driver_data = MT_CLS_EGALAX_SERIAL,
1109                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1110                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1111         { .driver_data = MT_CLS_EGALAX_SERIAL,
1112                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1113                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1114         { .driver_data = MT_CLS_EGALAX,
1115                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1116                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1117         { .driver_data = MT_CLS_EGALAX,
1118                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1119                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1120         { .driver_data = MT_CLS_EGALAX_SERIAL,
1121                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1122                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1123         { .driver_data = MT_CLS_EGALAX,
1124                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1125                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1126         { .driver_data = MT_CLS_EGALAX,
1127                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1128                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1129         { .driver_data = MT_CLS_EGALAX,
1130                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1131                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1132         { .driver_data = MT_CLS_EGALAX,
1133                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1134                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1135         { .driver_data = MT_CLS_EGALAX_SERIAL,
1136                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1137                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1138         { .driver_data = MT_CLS_EGALAX_SERIAL,
1139                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1140                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1141         { .driver_data = MT_CLS_EGALAX_SERIAL,
1142                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1143                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1144
1145         /* Elo TouchSystems IntelliTouch Plus panel */
1146         { .driver_data = MT_CLS_DUAL_CONTACT_ID,
1147                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
1148                         USB_DEVICE_ID_ELO_TS2515) },
1149
1150         /* Flatfrog Panels */
1151         { .driver_data = MT_CLS_FLATFROG,
1152                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
1153                         USB_DEVICE_ID_MULTITOUCH_3200) },
1154
1155         /* GeneralTouch panel */
1156         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
1157                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1158                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
1159         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
1160                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
1161                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
1162
1163         /* Gametel game controller */
1164         { .driver_data = MT_CLS_NSMU,
1165                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
1166                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
1167
1168         /* GoodTouch panels */
1169         { .driver_data = MT_CLS_NSMU,
1170                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
1171                         USB_DEVICE_ID_GOODTOUCH_000f) },
1172
1173         /* Hanvon panels */
1174         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1175                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
1176                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
1177
1178         /* Ideacom panel */
1179         { .driver_data = MT_CLS_SERIAL,
1180                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1181                         USB_DEVICE_ID_IDEACOM_IDC6650) },
1182         { .driver_data = MT_CLS_SERIAL,
1183                 MT_USB_DEVICE(USB_VENDOR_ID_IDEACOM,
1184                         USB_DEVICE_ID_IDEACOM_IDC6651) },
1185
1186         /* Ilitek dual touch panel */
1187         {  .driver_data = MT_CLS_NSMU,
1188                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
1189                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
1190
1191         /* IRTOUCH panels */
1192         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1193                 MT_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
1194                         USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
1195
1196         /* LG Display panels */
1197         { .driver_data = MT_CLS_DEFAULT,
1198                 MT_USB_DEVICE(USB_VENDOR_ID_LG,
1199                         USB_DEVICE_ID_LG_MULTITOUCH) },
1200
1201         /* Lumio panels */
1202         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1203                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1204                         USB_DEVICE_ID_CRYSTALTOUCH) },
1205         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1206                 MT_USB_DEVICE(USB_VENDOR_ID_LUMIO,
1207                         USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
1208
1209         /* MosArt panels */
1210         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1211                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1212                         USB_DEVICE_ID_ASUS_T91MT)},
1213         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1214                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
1215                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
1216         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
1217                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
1218                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
1219
1220         /* Nexio panels */
1221         { .driver_data = MT_CLS_DEFAULT,
1222                 MT_USB_DEVICE(USB_VENDOR_ID_NEXIO,
1223                         USB_DEVICE_ID_NEXIO_MULTITOUCH_420)},
1224
1225         /* Panasonic panels */
1226         { .driver_data = MT_CLS_PANASONIC,
1227                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1228                         USB_DEVICE_ID_PANABOARD_UBT780) },
1229         { .driver_data = MT_CLS_PANASONIC,
1230                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
1231                         USB_DEVICE_ID_PANABOARD_UBT880) },
1232
1233         /* Novatek Panel */
1234         { .driver_data = MT_CLS_NSMU,
1235                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
1236                         USB_DEVICE_ID_NOVATEK_PCT) },
1237
1238         /* PenMount panels */
1239         { .driver_data = MT_CLS_CONFIDENCE,
1240                 MT_USB_DEVICE(USB_VENDOR_ID_PENMOUNT,
1241                         USB_DEVICE_ID_PENMOUNT_PCI) },
1242
1243         /* PixArt optical touch screen */
1244         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1245                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1246                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
1247         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1248                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1249                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
1250         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
1251                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
1252                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
1253
1254         /* PixCir-based panels */
1255         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1256                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON,
1257                         USB_DEVICE_ID_HANVON_MULTITOUCH) },
1258         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
1259                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1260                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
1261
1262         /* Quanta-based panels */
1263         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1264                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1265                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
1266         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1267                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1268                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
1269         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
1270                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
1271                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008) },
1272
1273         /* Stantum panels */
1274         { .driver_data = MT_CLS_CONFIDENCE,
1275                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM,
1276                         USB_DEVICE_ID_MTP)},
1277         { .driver_data = MT_CLS_CONFIDENCE,
1278                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
1279                         USB_DEVICE_ID_MTP_STM)},
1280         { .driver_data = MT_CLS_DEFAULT,
1281                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX,
1282                         USB_DEVICE_ID_MTP_SITRONIX)},
1283
1284         /* TopSeed panels */
1285         { .driver_data = MT_CLS_TOPSEED,
1286                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
1287                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
1288
1289         /* Touch International panels */
1290         { .driver_data = MT_CLS_NSMU,
1291                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
1292                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
1293
1294         /* Unitec panels */
1295         { .driver_data = MT_CLS_NSMU,
1296                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1297                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
1298         { .driver_data = MT_CLS_NSMU,
1299                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
1300                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
1301         /* XAT */
1302         { .driver_data = MT_CLS_NSMU,
1303                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
1304                         USB_DEVICE_ID_XAT_CSR) },
1305
1306         /* Xiroku */
1307         { .driver_data = MT_CLS_NSMU,
1308                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1309                         USB_DEVICE_ID_XIROKU_SPX) },
1310         { .driver_data = MT_CLS_NSMU,
1311                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1312                         USB_DEVICE_ID_XIROKU_MPX) },
1313         { .driver_data = MT_CLS_NSMU,
1314                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1315                         USB_DEVICE_ID_XIROKU_CSR) },
1316         { .driver_data = MT_CLS_NSMU,
1317                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1318                         USB_DEVICE_ID_XIROKU_SPX1) },
1319         { .driver_data = MT_CLS_NSMU,
1320                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1321                         USB_DEVICE_ID_XIROKU_MPX1) },
1322         { .driver_data = MT_CLS_NSMU,
1323                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1324                         USB_DEVICE_ID_XIROKU_CSR1) },
1325         { .driver_data = MT_CLS_NSMU,
1326                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1327                         USB_DEVICE_ID_XIROKU_SPX2) },
1328         { .driver_data = MT_CLS_NSMU,
1329                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1330                         USB_DEVICE_ID_XIROKU_MPX2) },
1331         { .driver_data = MT_CLS_NSMU,
1332                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
1333                         USB_DEVICE_ID_XIROKU_CSR2) },
1334
1335         /* Zytronic panels */
1336         { .driver_data = MT_CLS_SERIAL,
1337                 MT_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
1338                         USB_DEVICE_ID_ZYTRONIC_ZXY100) },
1339
1340         /* Generic MT device */
1341         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
1342
1343         /* Generic Win 8 certified MT device */
1344         {  .driver_data = MT_CLS_WIN_8,
1345                 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
1346                         HID_ANY_ID, HID_ANY_ID) },
1347         { }
1348 };
1349 MODULE_DEVICE_TABLE(hid, mt_devices);
1350
1351 static const struct hid_usage_id mt_grabbed_usages[] = {
1352         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
1353         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
1354 };
1355
1356 static struct hid_driver mt_driver = {
1357         .name = "hid-multitouch",
1358         .id_table = mt_devices,
1359         .probe = mt_probe,
1360         .remove = mt_remove,
1361         .input_mapping = mt_input_mapping,
1362         .input_mapped = mt_input_mapped,
1363         .input_configured = mt_input_configured,
1364         .feature_mapping = mt_feature_mapping,
1365         .usage_table = mt_grabbed_usages,
1366         .event = mt_event,
1367         .report = mt_report,
1368 #ifdef CONFIG_PM
1369         .reset_resume = mt_reset_resume,
1370         .resume = mt_resume,
1371 #endif
1372 };
1373 module_hid_driver(mt_driver);