drivers/hid/hid-multitouch.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  HID driver for multitouch panels
   4  *
   5  *  Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
   6  *  Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
   7  *  Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
   8  *  Copyright (c) 2012-2013 Red Hat, Inc
   9  *
  10  *  This code is partly based on hid-egalax.c:
  11  *
  12  *  Copyright (c) 2010 Stephane Chatty <chatty@enac.fr>
  13  *  Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
  14  *  Copyright (c) 2010 Canonical, Ltd.
  15  *
  16  *  This code is partly based on hid-3m-pct.c:
  17  *
  18  *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
  19  *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
  20  *  Copyright (c) 2010      Canonical, Ltd.
  21  */
  22
  23 /*
  24  */
  25
  26 /*
  27  * This driver is regularly tested thanks to the test suite in hid-tools[1].
  28  * Please run these regression tests before patching this module so that
  29  * your patch won't break existing known devices.
  30  *
  31  * [1] https://gitlab.freedesktop.org/libevdev/hid-tools
  32  */
  33
  34 #include <linux/device.h>
  35 #include <linux/hid.h>
  36 #include <linux/module.h>
  37 #include <linux/slab.h>
  38 #include <linux/input/mt.h>
  39 #include <linux/jiffies.h>
  40 #include <linux/string.h>
  41 #include <linux/timer.h>
  42
  43
  44 MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
  45 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
  46 MODULE_DESCRIPTION("HID multitouch panels");
  47 MODULE_LICENSE("GPL");
  48
  49 #include "hid-ids.h"
  50
  51 /* quirks to control the device */
  52 #define MT_QUIRK_NOT_SEEN_MEANS_UP      BIT(0)
  53 #define MT_QUIRK_SLOT_IS_CONTACTID      BIT(1)
  54 #define MT_QUIRK_CYPRESS                BIT(2)
  55 #define MT_QUIRK_SLOT_IS_CONTACTNUMBER  BIT(3)
  56 #define MT_QUIRK_ALWAYS_VALID           BIT(4)
  57 #define MT_QUIRK_VALID_IS_INRANGE       BIT(5)
  58 #define MT_QUIRK_VALID_IS_CONFIDENCE    BIT(6)
  59 #define MT_QUIRK_CONFIDENCE             BIT(7)
  60 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    BIT(8)
  61 #define MT_QUIRK_NO_AREA                BIT(9)
  62 #define MT_QUIRK_IGNORE_DUPLICATES      BIT(10)
  63 #define MT_QUIRK_HOVERING               BIT(11)
  64 #define MT_QUIRK_CONTACT_CNT_ACCURATE   BIT(12)
  65 #define MT_QUIRK_FORCE_GET_FEATURE      BIT(13)
  66 #define MT_QUIRK_FIX_CONST_CONTACT_ID   BIT(14)
  67 #define MT_QUIRK_TOUCH_SIZE_SCALING     BIT(15)
  68 #define MT_QUIRK_STICKY_FINGERS         BIT(16)
  69 #define MT_QUIRK_ASUS_CUSTOM_UP         BIT(17)
  70 #define MT_QUIRK_WIN8_PTP_BUTTONS       BIT(18)
  71 #define MT_QUIRK_SEPARATE_APP_REPORT    BIT(19)
  72 #define MT_QUIRK_FORCE_MULTI_INPUT      BIT(20)
  73 #define MT_QUIRK_DISABLE_WAKEUP         BIT(21)
  74 #define MT_QUIRK_ORIENTATION_INVERT     BIT(22)
  75
  76 #define MT_INPUTMODE_TOUCHSCREEN        0x02
  77 #define MT_INPUTMODE_TOUCHPAD           0x03
  78
  79 #define MT_BUTTONTYPE_CLICKPAD          0
  80
  81 enum latency_mode {
  82         HID_LATENCY_NORMAL = 0,
  83         HID_LATENCY_HIGH = 1,
  84 };
  85
  86 #define MT_IO_FLAGS_RUNNING             0
  87 #define MT_IO_FLAGS_ACTIVE_SLOTS        1
  88 #define MT_IO_FLAGS_PENDING_SLOTS       2
  89
  90 static const bool mtrue = true;         /* default for true */
  91 static const bool mfalse;               /* default for false */
  92 static const __s32 mzero;               /* default for 0 */
  93
  94 #define DEFAULT_TRUE    ((void *)&mtrue)
  95 #define DEFAULT_FALSE   ((void *)&mfalse)
  96 #define DEFAULT_ZERO    ((void *)&mzero)
  97
  98 struct mt_usages {
  99         struct list_head list;
 100         __s32 *x, *y, *cx, *cy, *p, *w, *h, *a;
 101         __s32 *contactid;       /* the device ContactID assigned to this slot */
 102         bool *tip_state;        /* is the touch valid? */
 103         bool *inrange_state;    /* is the finger in proximity of the sensor? */
 104         bool *confidence_state; /* is the touch made by a finger? */
 105 };
 106
 107 struct mt_application {
 108         struct list_head list;
 109         unsigned int application;
 110         unsigned int report_id;
 111         struct list_head mt_usages;     /* mt usages list */
 112
 113         __s32 quirks;
 114
 115         __s32 *scantime;                /* scantime reported */
 116         __s32 scantime_logical_max;     /* max value for raw scantime */
 117
 118         __s32 *raw_cc;                  /* contact count in the report */
 119         int left_button_state;          /* left button state */
 120         unsigned int mt_flags;          /* flags to pass to input-mt */
 121
 122         unsigned long *pending_palm_slots;      /* slots where we reported palm
 123                                                  * and need to release */
 124
 125         __u8 num_received;      /* how many contacts we received */
 126         __u8 num_expected;      /* expected last contact index */
 127         __u8 buttons_count;     /* number of physical buttons per touchpad */
 128         __u8 touches_by_report; /* how many touches are present in one report:
 129                                  * 1 means we should use a serial protocol
 130                                  * > 1 means hybrid (multitouch) protocol
 131                                  */
 132
 133         unsigned long jiffies;  /* the frame's jiffies */
 134         int timestamp;          /* the timestamp to be sent */
 135         int prev_scantime;              /* scantime reported previously */
 136
 137         bool have_contact_count;
 138 };
 139
 140 struct mt_class {
 141         __s32 name;     /* MT_CLS */
 142         __s32 quirks;
 143         __s32 sn_move;  /* Signal/noise ratio for move events */
 144         __s32 sn_width; /* Signal/noise ratio for width events */
 145         __s32 sn_height;        /* Signal/noise ratio for height events */
 146         __s32 sn_pressure;      /* Signal/noise ratio for pressure events */
 147         __u8 maxcontacts;
 148         bool is_indirect;       /* true for touchpads */
 149         bool export_all_inputs; /* do not ignore mouse, keyboards, etc... */
 150 };
 151
 152 struct mt_report_data {
 153         struct list_head list;
 154         struct hid_report *report;
 155         struct mt_application *application;
 156         bool is_mt_collection;
 157 };
 158
 159 struct mt_device {
 160         struct mt_class mtclass;        /* our mt device class */
 161         struct timer_list release_timer;        /* to release sticky fingers */
 162         struct hid_device *hdev;        /* hid_device we're attached to */
 163         unsigned long mt_io_flags;      /* mt flags (MT_IO_FLAGS_*) */
 164         __u8 inputmode_value;   /* InputMode HID feature value */
 165         __u8 maxcontacts;
 166         bool is_buttonpad;      /* is this device a button pad? */
 167         bool serial_maybe;      /* need to check for serial protocol */
 168
 169         struct list_head applications;
 170         struct list_head reports;
 171 };
 172
 173 static void mt_post_parse_default_settings(struct mt_device *td,
 174                                            struct mt_application *app);
 175 static void mt_post_parse(struct mt_device *td, struct mt_application *app);
 176
 177 /* classes of device behavior */
 178 #define MT_CLS_DEFAULT                          0x0001
 179
 180 #define MT_CLS_SERIAL                           0x0002
 181 #define MT_CLS_CONFIDENCE                       0x0003
 182 #define MT_CLS_CONFIDENCE_CONTACT_ID            0x0004
 183 #define MT_CLS_CONFIDENCE_MINUS_ONE             0x0005
 184 #define MT_CLS_DUAL_INRANGE_CONTACTID           0x0006
 185 #define MT_CLS_DUAL_INRANGE_CONTACTNUMBER       0x0007
 186 /* reserved                                     0x0008 */
 187 #define MT_CLS_INRANGE_CONTACTNUMBER            0x0009
 188 #define MT_CLS_NSMU                             0x000a
 189 /* reserved                                     0x0010 */
 190 /* reserved                                     0x0011 */
 191 #define MT_CLS_WIN_8                            0x0012
 192 #define MT_CLS_EXPORT_ALL_INPUTS                0x0013
 193 /* reserved                                     0x0014 */
 194 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT          0x0015
 195 #define MT_CLS_WIN_8_DISABLE_WAKEUP             0x0016
 196 #define MT_CLS_WIN_8_NO_STICKY_FINGERS          0x0017
 197 #define MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU     0x0018
 198
 199 /* vendor specific classes */
 200 #define MT_CLS_3M                               0x0101
 201 /* reserved                                     0x0102 */
 202 #define MT_CLS_EGALAX                           0x0103
 203 #define MT_CLS_EGALAX_SERIAL                    0x0104
 204 #define MT_CLS_TOPSEED                          0x0105
 205 #define MT_CLS_PANASONIC                        0x0106
 206 #define MT_CLS_FLATFROG                         0x0107
 207 #define MT_CLS_GENERALTOUCH_TWOFINGERS          0x0108
 208 #define MT_CLS_GENERALTOUCH_PWT_TENFINGERS      0x0109
 209 #define MT_CLS_LG                               0x010a
 210 #define MT_CLS_ASUS                             0x010b
 211 #define MT_CLS_VTL                              0x0110
 212 #define MT_CLS_GOOGLE                           0x0111
 213 #define MT_CLS_RAZER_BLADE_STEALTH              0x0112
 214 #define MT_CLS_SMART_TECH                       0x0113
 215
 216 #define MT_DEFAULT_MAXCONTACT   10
 217 #define MT_MAX_MAXCONTACT       250
 218
 219 /*
 220  * Resync device and local timestamps after that many microseconds without
 221  * receiving data.
 222  */
 223 #define MAX_TIMESTAMP_INTERVAL  1000000
 224
 225 #define MT_USB_DEVICE(v, p)     HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH, v, p)
 226 #define MT_BT_DEVICE(v, p)      HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH, v, p)
 227
 228 /*
 229  * these device-dependent functions determine what slot corresponds
 230  * to a valid contact that was just read.
 231  */
 232
 233 static int cypress_compute_slot(struct mt_application *application,
 234                                 struct mt_usages *slot)
 235 {
 236         if (*slot->contactid != 0 || application->num_received == 0)
 237                 return *slot->contactid;
 238         else
 239                 return -1;
 240 }
 241
 242 static const struct mt_class mt_classes[] = {
 243         { .name = MT_CLS_DEFAULT,
 244                 .quirks = MT_QUIRK_ALWAYS_VALID |
 245                         MT_QUIRK_CONTACT_CNT_ACCURATE },
 246         { .name = MT_CLS_NSMU,
 247                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP },
 248         { .name = MT_CLS_SERIAL,
 249                 .quirks = MT_QUIRK_ALWAYS_VALID},
 250         { .name = MT_CLS_CONFIDENCE,
 251                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE },
 252         { .name = MT_CLS_CONFIDENCE_CONTACT_ID,
 253                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 254                         MT_QUIRK_SLOT_IS_CONTACTID },
 255         { .name = MT_CLS_CONFIDENCE_MINUS_ONE,
 256                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 257                         MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE },
 258         { .name = MT_CLS_DUAL_INRANGE_CONTACTID,
 259                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 260                         MT_QUIRK_SLOT_IS_CONTACTID,
 261                 .maxcontacts = 2 },
 262         { .name = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
 263                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 264                         MT_QUIRK_SLOT_IS_CONTACTNUMBER,
 265                 .maxcontacts = 2 },
 266         { .name = MT_CLS_INRANGE_CONTACTNUMBER,
 267                 .quirks = MT_QUIRK_VALID_IS_INRANGE |
 268                         MT_QUIRK_SLOT_IS_CONTACTNUMBER },
 269         { .name = MT_CLS_WIN_8,
 270                 .quirks = MT_QUIRK_ALWAYS_VALID |
 271                         MT_QUIRK_IGNORE_DUPLICATES |
 272                         MT_QUIRK_HOVERING |
 273                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 274                         MT_QUIRK_STICKY_FINGERS |
 275                         MT_QUIRK_WIN8_PTP_BUTTONS,
 276                 .export_all_inputs = true },
 277         { .name = MT_CLS_EXPORT_ALL_INPUTS,
 278                 .quirks = MT_QUIRK_ALWAYS_VALID |
 279                         MT_QUIRK_CONTACT_CNT_ACCURATE,
 280                 .export_all_inputs = true },
 281         { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
 282                 .quirks = MT_QUIRK_ALWAYS_VALID |
 283                         MT_QUIRK_IGNORE_DUPLICATES |
 284                         MT_QUIRK_HOVERING |
 285                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 286                         MT_QUIRK_STICKY_FINGERS |
 287                         MT_QUIRK_WIN8_PTP_BUTTONS |
 288                         MT_QUIRK_FORCE_MULTI_INPUT,
 289                 .export_all_inputs = true },
 290         { .name = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
 291                 .quirks = MT_QUIRK_IGNORE_DUPLICATES |
 292                         MT_QUIRK_HOVERING |
 293                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 294                         MT_QUIRK_STICKY_FINGERS |
 295                         MT_QUIRK_WIN8_PTP_BUTTONS |
 296                         MT_QUIRK_FORCE_MULTI_INPUT |
 297                         MT_QUIRK_NOT_SEEN_MEANS_UP,
 298                 .export_all_inputs = true },
 299         { .name = MT_CLS_WIN_8_DISABLE_WAKEUP,
 300                 .quirks = MT_QUIRK_ALWAYS_VALID |
 301                         MT_QUIRK_IGNORE_DUPLICATES |
 302                         MT_QUIRK_HOVERING |
 303                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 304                         MT_QUIRK_STICKY_FINGERS |
 305                         MT_QUIRK_WIN8_PTP_BUTTONS |
 306                         MT_QUIRK_DISABLE_WAKEUP,
 307                 .export_all_inputs = true },
 308         { .name = MT_CLS_WIN_8_NO_STICKY_FINGERS,
 309                 .quirks = MT_QUIRK_ALWAYS_VALID |
 310                         MT_QUIRK_IGNORE_DUPLICATES |
 311                         MT_QUIRK_HOVERING |
 312                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 313                         MT_QUIRK_WIN8_PTP_BUTTONS,
 314                 .export_all_inputs = true },
 315
 316         /*
 317          * vendor specific classes
 318          */
 319         { .name = MT_CLS_3M,
 320                 .quirks = MT_QUIRK_VALID_IS_CONFIDENCE |
 321                         MT_QUIRK_SLOT_IS_CONTACTID |
 322                         MT_QUIRK_TOUCH_SIZE_SCALING,
 323                 .sn_move = 2048,
 324                 .sn_width = 128,
 325                 .sn_height = 128,
 326                 .maxcontacts = 60,
 327         },
 328         { .name = MT_CLS_EGALAX,
 329                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 330                         MT_QUIRK_VALID_IS_INRANGE,
 331                 .sn_move = 4096,
 332                 .sn_pressure = 32,
 333         },
 334         { .name = MT_CLS_EGALAX_SERIAL,
 335                 .quirks =  MT_QUIRK_SLOT_IS_CONTACTID |
 336                         MT_QUIRK_ALWAYS_VALID,
 337                 .sn_move = 4096,
 338                 .sn_pressure = 32,
 339         },
 340         { .name = MT_CLS_TOPSEED,
 341                 .quirks = MT_QUIRK_ALWAYS_VALID,
 342                 .is_indirect = true,
 343                 .maxcontacts = 2,
 344         },
 345         { .name = MT_CLS_PANASONIC,
 346                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
 347                 .maxcontacts = 4 },
 348         { .name = MT_CLS_GENERALTOUCH_TWOFINGERS,
 349                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 350                         MT_QUIRK_VALID_IS_INRANGE |
 351                         MT_QUIRK_SLOT_IS_CONTACTID,
 352                 .maxcontacts = 2
 353         },
 354         { .name = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
 355                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 356                         MT_QUIRK_SLOT_IS_CONTACTID
 357         },
 358
 359         { .name = MT_CLS_FLATFROG,
 360                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
 361                         MT_QUIRK_NO_AREA,
 362                 .sn_move = 2048,
 363                 .maxcontacts = 40,
 364         },
 365         { .name = MT_CLS_LG,
 366                 .quirks = MT_QUIRK_ALWAYS_VALID |
 367                         MT_QUIRK_FIX_CONST_CONTACT_ID |
 368                         MT_QUIRK_IGNORE_DUPLICATES |
 369                         MT_QUIRK_HOVERING |
 370                         MT_QUIRK_CONTACT_CNT_ACCURATE },
 371         { .name = MT_CLS_ASUS,
 372                 .quirks = MT_QUIRK_ALWAYS_VALID |
 373                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 374                         MT_QUIRK_ASUS_CUSTOM_UP },
 375         { .name = MT_CLS_VTL,
 376                 .quirks = MT_QUIRK_ALWAYS_VALID |
 377                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 378                         MT_QUIRK_FORCE_GET_FEATURE,
 379         },
 380         { .name = MT_CLS_GOOGLE,
 381                 .quirks = MT_QUIRK_ALWAYS_VALID |
 382                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 383                         MT_QUIRK_SLOT_IS_CONTACTID |
 384                         MT_QUIRK_HOVERING
 385         },
 386         { .name = MT_CLS_RAZER_BLADE_STEALTH,
 387                 .quirks = MT_QUIRK_ALWAYS_VALID |
 388                         MT_QUIRK_IGNORE_DUPLICATES |
 389                         MT_QUIRK_HOVERING |
 390                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 391                         MT_QUIRK_WIN8_PTP_BUTTONS,
 392         },
 393         { .name = MT_CLS_SMART_TECH,
 394                 .quirks = MT_QUIRK_ALWAYS_VALID |
 395                         MT_QUIRK_IGNORE_DUPLICATES |
 396                         MT_QUIRK_CONTACT_CNT_ACCURATE |
 397                         MT_QUIRK_SEPARATE_APP_REPORT,
 398         },
 399         { }
 400 };
 401
 402 static ssize_t mt_show_quirks(struct device *dev,
 403                            struct device_attribute *attr,
 404                            char *buf)
 405 {
 406         struct hid_device *hdev = to_hid_device(dev);
 407         struct mt_device *td = hid_get_drvdata(hdev);
 408
 409         return sprintf(buf, "%u\n", td->mtclass.quirks);
 410 }
 411
 412 static ssize_t mt_set_quirks(struct device *dev,
 413                           struct device_attribute *attr,
 414                           const char *buf, size_t count)
 415 {
 416         struct hid_device *hdev = to_hid_device(dev);
 417         struct mt_device *td = hid_get_drvdata(hdev);
 418         struct mt_application *application;
 419
 420         unsigned long val;
 421
 422         if (kstrtoul(buf, 0, &val))
 423                 return -EINVAL;
 424
 425         td->mtclass.quirks = val;
 426
 427         list_for_each_entry(application, &td->applications, list) {
 428                 application->quirks = val;
 429                 if (!application->have_contact_count)
 430                         application->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
 431         }
 432
 433         return count;
 434 }
 435
 436 static DEVICE_ATTR(quirks, S_IWUSR | S_IRUGO, mt_show_quirks, mt_set_quirks);
 437
 438 static struct attribute *sysfs_attrs[] = {
 439         &dev_attr_quirks.attr,
 440         NULL
 441 };
 442
 443 static const struct attribute_group mt_attribute_group = {
 444         .attrs = sysfs_attrs
 445 };
 446
 447 static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
 448 {
 449         int ret;
 450         u32 size = hid_report_len(report);
 451         u8 *buf;
 452
 453         /*
 454          * Do not fetch the feature report if the device has been explicitly
 455          * marked as non-capable.
 456          */
 457         if (hdev->quirks & HID_QUIRK_NO_INIT_REPORTS)
 458                 return;
 459
 460         buf = hid_alloc_report_buf(report, GFP_KERNEL);
 461         if (!buf)
 462                 return;
 463
 464         ret = hid_hw_raw_request(hdev, report->id, buf, size,
 465                                  HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
 466         if (ret < 0) {
 467                 dev_warn(&hdev->dev, "failed to fetch feature %d\n",
 468                          report->id);
 469         } else {
 470                 ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, buf,
 471                                            size, 0);
 472                 if (ret)
 473                         dev_warn(&hdev->dev, "failed to report feature\n");
 474         }
 475
 476         kfree(buf);
 477 }
 478
 479 static void mt_feature_mapping(struct hid_device *hdev,
 480                 struct hid_field *field, struct hid_usage *usage)
 481 {
 482         struct mt_device *td = hid_get_drvdata(hdev);
 483
 484         switch (usage->hid) {
 485         case HID_DG_CONTACTMAX:
 486                 mt_get_feature(hdev, field->report);
 487
 488                 td->maxcontacts = field->value[0];
 489                 if (!td->maxcontacts &&
 490                     field->logical_maximum <= MT_MAX_MAXCONTACT)
 491                         td->maxcontacts = field->logical_maximum;
 492                 if (td->mtclass.maxcontacts)
 493                         /* check if the maxcontacts is given by the class */
 494                         td->maxcontacts = td->mtclass.maxcontacts;
 495
 496                 break;
 497         case HID_DG_BUTTONTYPE:
 498                 if (usage->usage_index >= field->report_count) {
 499                         dev_err(&hdev->dev, "HID_DG_BUTTONTYPE out of range\n");
 500                         break;
 501                 }
 502
 503                 mt_get_feature(hdev, field->report);
 504                 if (field->value[usage->usage_index] == MT_BUTTONTYPE_CLICKPAD)
 505                         td->is_buttonpad = true;
 506
 507                 break;
 508         case 0xff0000c5:
 509                 /* Retrieve the Win8 blob once to enable some devices */
 510                 if (usage->usage_index == 0)
 511                         mt_get_feature(hdev, field->report);
 512                 break;
 513         }
 514 }
 515
 516 static void set_abs(struct input_dev *input, unsigned int code,
 517                 struct hid_field *field, int snratio)
 518 {
 519         int fmin = field->logical_minimum;
 520         int fmax = field->logical_maximum;
 521         int fuzz = snratio ? (fmax - fmin) / snratio : 0;
 522         input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
 523         input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
 524 }
 525
 526 static struct mt_usages *mt_allocate_usage(struct hid_device *hdev,
 527                                            struct mt_application *application)
 528 {
 529         struct mt_usages *usage;
 530
 531         usage = devm_kzalloc(&hdev->dev, sizeof(*usage), GFP_KERNEL);
 532         if (!usage)
 533                 return NULL;
 534
 535         /* set some defaults so we do not need to check for null pointers */
 536         usage->x = DEFAULT_ZERO;
 537         usage->y = DEFAULT_ZERO;
 538         usage->cx = DEFAULT_ZERO;
 539         usage->cy = DEFAULT_ZERO;
 540         usage->p = DEFAULT_ZERO;
 541         usage->w = DEFAULT_ZERO;
 542         usage->h = DEFAULT_ZERO;
 543         usage->a = DEFAULT_ZERO;
 544         usage->contactid = DEFAULT_ZERO;
 545         usage->tip_state = DEFAULT_FALSE;
 546         usage->inrange_state = DEFAULT_FALSE;
 547         usage->confidence_state = DEFAULT_TRUE;
 548
 549         list_add_tail(&usage->list, &application->mt_usages);
 550
 551         return usage;
 552 }
 553
 554 static struct mt_application *mt_allocate_application(struct mt_device *td,
 555                                                       struct hid_report *report)
 556 {
 557         unsigned int application = report->application;
 558         struct mt_application *mt_application;
 559
 560         mt_application = devm_kzalloc(&td->hdev->dev, sizeof(*mt_application),
 561                                       GFP_KERNEL);
 562         if (!mt_application)
 563                 return NULL;
 564
 565         mt_application->application = application;
 566         INIT_LIST_HEAD(&mt_application->mt_usages);
 567
 568         if (application == HID_DG_TOUCHSCREEN)
 569                 mt_application->mt_flags |= INPUT_MT_DIRECT;
 570
 571         /*
 572          * Model touchscreens providing buttons as touchpads.
 573          */
 574         if (application == HID_DG_TOUCHPAD) {
 575                 mt_application->mt_flags |= INPUT_MT_POINTER;
 576                 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
 577         }
 578
 579         mt_application->scantime = DEFAULT_ZERO;
 580         mt_application->raw_cc = DEFAULT_ZERO;
 581         mt_application->quirks = td->mtclass.quirks;
 582         mt_application->report_id = report->id;
 583
 584         list_add_tail(&mt_application->list, &td->applications);
 585
 586         return mt_application;
 587 }
 588
 589 static struct mt_application *mt_find_application(struct mt_device *td,
 590                                                   struct hid_report *report)
 591 {
 592         unsigned int application = report->application;
 593         struct mt_application *tmp, *mt_application = NULL;
 594
 595         list_for_each_entry(tmp, &td->applications, list) {
 596                 if (application == tmp->application) {
 597                         if (!(td->mtclass.quirks & MT_QUIRK_SEPARATE_APP_REPORT) ||
 598                             tmp->report_id == report->id) {
 599                                 mt_application = tmp;
 600                                 break;
 601                         }
 602                 }
 603         }
 604
 605         if (!mt_application)
 606                 mt_application = mt_allocate_application(td, report);
 607
 608         return mt_application;
 609 }
 610
 611 static struct mt_report_data *mt_allocate_report_data(struct mt_device *td,
 612                                                       struct hid_report *report)
 613 {
 614         struct mt_report_data *rdata;
 615         struct hid_field *field;
 616         int r, n;
 617
 618         rdata = devm_kzalloc(&td->hdev->dev, sizeof(*rdata), GFP_KERNEL);
 619         if (!rdata)
 620                 return NULL;
 621
 622         rdata->report = report;
 623         rdata->application = mt_find_application(td, report);
 624
 625         if (!rdata->application) {
 626                 devm_kfree(&td->hdev->dev, rdata);
 627                 return NULL;
 628         }
 629
 630         for (r = 0; r < report->maxfield; r++) {
 631                 field = report->field[r];
 632
 633                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
 634                         continue;
 635
 636                 if (field->logical == HID_DG_FINGER || td->hdev->group != HID_GROUP_MULTITOUCH_WIN_8) {
 637                         for (n = 0; n < field->report_count; n++) {
 638                                 if (field->usage[n].hid == HID_DG_CONTACTID) {
 639                                         rdata->is_mt_collection = true;
 640                                         break;
 641                                 }
 642                         }
 643                 }
 644         }
 645
 646         list_add_tail(&rdata->list, &td->reports);
 647
 648         return rdata;
 649 }
 650
 651 static struct mt_report_data *mt_find_report_data(struct mt_device *td,
 652                                                   struct hid_report *report)
 653 {
 654         struct mt_report_data *tmp, *rdata = NULL;
 655
 656         list_for_each_entry(tmp, &td->reports, list) {
 657                 if (report == tmp->report) {
 658                         rdata = tmp;
 659                         break;
 660                 }
 661         }
 662
 663         if (!rdata)
 664                 rdata = mt_allocate_report_data(td, report);
 665
 666         return rdata;
 667 }
 668
 669 static void mt_store_field(struct hid_device *hdev,
 670                            struct mt_application *application,
 671                            __s32 *value,
 672                            size_t offset)
 673 {
 674         struct mt_usages *usage;
 675         __s32 **target;
 676
 677         if (list_empty(&application->mt_usages))
 678                 usage = mt_allocate_usage(hdev, application);
 679         else
 680                 usage = list_last_entry(&application->mt_usages,
 681                                         struct mt_usages,
 682                                         list);
 683
 684         if (!usage)
 685                 return;
 686
 687         target = (__s32 **)((char *)usage + offset);
 688
 689         /* the value has already been filled, create a new slot */
 690         if (*target != DEFAULT_TRUE &&
 691             *target != DEFAULT_FALSE &&
 692             *target != DEFAULT_ZERO) {
 693                 if (usage->contactid == DEFAULT_ZERO ||
 694                     usage->x == DEFAULT_ZERO ||
 695                     usage->y == DEFAULT_ZERO) {
 696                         hid_dbg(hdev,
 697                                 "ignoring duplicate usage on incomplete");
 698                         return;
 699                 }
 700                 usage = mt_allocate_usage(hdev, application);
 701                 if (!usage)
 702                         return;
 703
 704                 target = (__s32 **)((char *)usage + offset);
 705         }
 706
 707         *target = value;
 708 }
 709
 710 #define MT_STORE_FIELD(__name)                                          \
 711         mt_store_field(hdev, app,                                       \
 712                        &field->value[usage->usage_index],               \
 713                        offsetof(struct mt_usages, __name))
 714
 715 static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 716                 struct hid_field *field, struct hid_usage *usage,
 717                 unsigned long **bit, int *max, struct mt_application *app)
 718 {
 719         struct mt_device *td = hid_get_drvdata(hdev);
 720         struct mt_class *cls = &td->mtclass;
 721         int code;
 722         struct hid_usage *prev_usage = NULL;
 723
 724         /*
 725          * Model touchscreens providing buttons as touchpads.
 726          */
 727         if (field->application == HID_DG_TOUCHSCREEN &&
 728             (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
 729                 app->mt_flags |= INPUT_MT_POINTER;
 730                 td->inputmode_value = MT_INPUTMODE_TOUCHPAD;
 731         }
 732
 733         /* count the buttons on touchpads */
 734         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
 735                 app->buttons_count++;
 736
 737         if (usage->usage_index)
 738                 prev_usage = &field->usage[usage->usage_index - 1];
 739
 740         switch (usage->hid & HID_USAGE_PAGE) {
 741
 742         case HID_UP_GENDESK:
 743                 switch (usage->hid) {
 744                 case HID_GD_X:
 745                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 746                                 code = ABS_MT_TOOL_X;
 747                                 MT_STORE_FIELD(cx);
 748                         } else {
 749                                 code = ABS_MT_POSITION_X;
 750                                 MT_STORE_FIELD(x);
 751                         }
 752
 753                         set_abs(hi->input, code, field, cls->sn_move);
 754
 755                         /*
 756                          * A system multi-axis that exports X and Y has a high
 757                          * chance of being used directly on a surface
 758                          */
 759                         if (field->application == HID_GD_SYSTEM_MULTIAXIS) {
 760                                 __set_bit(INPUT_PROP_DIRECT,
 761                                           hi->input->propbit);
 762                                 input_set_abs_params(hi->input,
 763                                                      ABS_MT_TOOL_TYPE,
 764                                                      MT_TOOL_DIAL,
 765                                                      MT_TOOL_DIAL, 0, 0);
 766                         }
 767
 768                         return 1;
 769                 case HID_GD_Y:
 770                         if (prev_usage && (prev_usage->hid == usage->hid)) {
 771                                 code = ABS_MT_TOOL_Y;
 772                                 MT_STORE_FIELD(cy);
 773                         } else {
 774                                 code = ABS_MT_POSITION_Y;
 775                                 MT_STORE_FIELD(y);
 776                         }
 777
 778                         set_abs(hi->input, code, field, cls->sn_move);
 779
 780                         return 1;
 781                 }
 782                 return 0;
 783
 784         case HID_UP_DIGITIZER:
 785                 switch (usage->hid) {
 786                 case HID_DG_INRANGE:
 787                         if (app->quirks & MT_QUIRK_HOVERING) {
 788                                 input_set_abs_params(hi->input,
 789                                         ABS_MT_DISTANCE, 0, 1, 0, 0);
 790                         }
 791                         MT_STORE_FIELD(inrange_state);
 792                         return 1;
 793                 case HID_DG_CONFIDENCE:
 794                         if ((cls->name == MT_CLS_WIN_8 ||
 795                              cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT ||
 796                              cls->name == MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU ||
 797                              cls->name == MT_CLS_WIN_8_DISABLE_WAKEUP) &&
 798                                 (field->application == HID_DG_TOUCHPAD ||
 799                                  field->application == HID_DG_TOUCHSCREEN))
 800                                 app->quirks |= MT_QUIRK_CONFIDENCE;
 801
 802                         if (app->quirks & MT_QUIRK_CONFIDENCE)
 803                                 input_set_abs_params(hi->input,
 804                                                      ABS_MT_TOOL_TYPE,
 805                                                      MT_TOOL_FINGER,
 806                                                      MT_TOOL_PALM, 0, 0);
 807
 808                         MT_STORE_FIELD(confidence_state);
 809                         return 1;
 810                 case HID_DG_TIPSWITCH:
 811                         if (field->application != HID_GD_SYSTEM_MULTIAXIS)
 812                                 input_set_capability(hi->input,
 813                                                      EV_KEY, BTN_TOUCH);
 814                         MT_STORE_FIELD(tip_state);
 815                         return 1;
 816                 case HID_DG_CONTACTID:
 817                         MT_STORE_FIELD(contactid);
 818                         app->touches_by_report++;
 819                         return 1;
 820                 case HID_DG_WIDTH:
 821                         if (!(app->quirks & MT_QUIRK_NO_AREA))
 822                                 set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
 823                                         cls->sn_width);
 824                         MT_STORE_FIELD(w);
 825                         return 1;
 826                 case HID_DG_HEIGHT:
 827                         if (!(app->quirks & MT_QUIRK_NO_AREA)) {
 828                                 set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
 829                                         cls->sn_height);
 830
 831                                 /*
 832                                  * Only set ABS_MT_ORIENTATION if it is not
 833                                  * already set by the HID_DG_AZIMUTH usage.
 834                                  */
 835                                 if (!test_bit(ABS_MT_ORIENTATION,
 836                                                 hi->input->absbit))
 837                                         input_set_abs_params(hi->input,
 838                                                 ABS_MT_ORIENTATION, 0, 1, 0, 0);
 839                         }
 840                         MT_STORE_FIELD(h);
 841                         return 1;
 842                 case HID_DG_TIPPRESSURE:
 843                         set_abs(hi->input, ABS_MT_PRESSURE, field,
 844                                 cls->sn_pressure);
 845                         MT_STORE_FIELD(p);
 846                         return 1;
 847                 case HID_DG_SCANTIME:
 848                         input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
 849                         app->scantime = &field->value[usage->usage_index];
 850                         app->scantime_logical_max = field->logical_maximum;
 851                         return 1;
 852                 case HID_DG_CONTACTCOUNT:
 853                         app->have_contact_count = true;
 854                         app->raw_cc = &field->value[usage->usage_index];
 855                         return 1;
 856                 case HID_DG_AZIMUTH:
 857                         /*
 858                          * Azimuth has the range of [0, MAX) representing a full
 859                          * revolution. Set ABS_MT_ORIENTATION to a quarter of
 860                          * MAX according the definition of ABS_MT_ORIENTATION
 861                          */
 862                         input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
 863                                 -field->logical_maximum / 4,
 864                                 field->logical_maximum / 4,
 865                                 cls->sn_move ?
 866                                 field->logical_maximum / cls->sn_move : 0, 0);
 867                         MT_STORE_FIELD(a);
 868                         return 1;
 869                 case HID_DG_CONTACTMAX:
 870                         /* contact max are global to the report */
 871                         return -1;
 872                 case HID_DG_TOUCH:
 873                         /* Legacy devices use TIPSWITCH and not TOUCH.
 874                          * Let's just ignore this field. */
 875                         return -1;
 876                 }
 877                 /* let hid-input decide for the others */
 878                 return 0;
 879
 880         case HID_UP_BUTTON:
 881                 code = BTN_MOUSE + ((usage->hid - 1) & HID_USAGE);
 882                 /*
 883                  * MS PTP spec says that external buttons left and right have
 884                  * usages 2 and 3.
 885                  */
 886                 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
 887                     field->application == HID_DG_TOUCHPAD &&
 888                     (usage->hid & HID_USAGE) > 1)
 889                         code--;
 890
 891                 if (field->application == HID_GD_SYSTEM_MULTIAXIS)
 892                         code = BTN_0  + ((usage->hid - 1) & HID_USAGE);
 893
 894                 hid_map_usage(hi, usage, bit, max, EV_KEY, code);
 895                 if (!*bit)
 896                         return -1;
 897                 input_set_capability(hi->input, EV_KEY, code);
 898                 return 1;
 899
 900         case 0xff000000:
 901                 /* we do not want to map these: no input-oriented meaning */
 902                 return -1;
 903         }
 904
 905         return 0;
 906 }
 907
 908 static int mt_compute_slot(struct mt_device *td, struct mt_application *app,
 909                            struct mt_usages *slot,
 910                            struct input_dev *input)
 911 {
 912         __s32 quirks = app->quirks;
 913
 914         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID)
 915                 return *slot->contactid;
 916
 917         if (quirks & MT_QUIRK_CYPRESS)
 918                 return cypress_compute_slot(app, slot);
 919
 920         if (quirks & MT_QUIRK_SLOT_IS_CONTACTNUMBER)
 921                 return app->num_received;
 922
 923         if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE)
 924                 return *slot->contactid - 1;
 925
 926         return input_mt_get_slot_by_key(input, *slot->contactid);
 927 }
 928
 929 static void mt_release_pending_palms(struct mt_device *td,
 930                                      struct mt_application *app,
 931                                      struct input_dev *input)
 932 {
 933         int slotnum;
 934         bool need_sync = false;
 935
 936         for_each_set_bit(slotnum, app->pending_palm_slots, td->maxcontacts) {
 937                 clear_bit(slotnum, app->pending_palm_slots);
 938
 939                 input_mt_slot(input, slotnum);
 940                 input_mt_report_slot_inactive(input);
 941
 942                 need_sync = true;
 943         }
 944
 945         if (need_sync) {
 946                 input_mt_sync_frame(input);
 947                 input_sync(input);
 948         }
 949 }
 950
 951 /*
 952  * this function is called when a whole packet has been received and processed,
 953  * so that it can decide what to send to the input layer.
 954  */
 955 static void mt_sync_frame(struct mt_device *td, struct mt_application *app,
 956                           struct input_dev *input)
 957 {
 958         if (app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS)
 959                 input_event(input, EV_KEY, BTN_LEFT, app->left_button_state);
 960
 961         input_mt_sync_frame(input);
 962         input_event(input, EV_MSC, MSC_TIMESTAMP, app->timestamp);
 963         input_sync(input);
 964
 965         mt_release_pending_palms(td, app, input);
 966
 967         app->num_received = 0;
 968         app->left_button_state = 0;
 969
 970         if (test_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags))
 971                 set_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
 972         else
 973                 clear_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags);
 974         clear_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
 975 }
 976
 977 static int mt_compute_timestamp(struct mt_application *app, __s32 value)
 978 {
 979         long delta = value - app->prev_scantime;
 980         unsigned long jdelta = jiffies_to_usecs(jiffies - app->jiffies);
 981
 982         app->jiffies = jiffies;
 983
 984         if (delta < 0)
 985                 delta += app->scantime_logical_max;
 986
 987         /* HID_DG_SCANTIME is expressed in 100us, we want it in us. */
 988         delta *= 100;
 989
 990         if (jdelta > MAX_TIMESTAMP_INTERVAL)
 991                 /* No data received for a while, resync the timestamp. */
 992                 return 0;
 993         else
 994                 return app->timestamp + delta;
 995 }
 996
 997 static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
 998                                 struct hid_usage *usage, __s32 value)
 999 {
1000         /* we will handle the hidinput part later, now remains hiddev */
1001         if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
1002                 hid->hiddev_hid_event(hid, field, usage, value);
1003
1004         return 1;
1005 }
1006
1007 static int mt_process_slot(struct mt_device *td, struct input_dev *input,
1008                             struct mt_application *app,
1009                             struct mt_usages *slot)
1010 {
1011         struct input_mt *mt = input->mt;
1012         struct hid_device *hdev = td->hdev;
1013         __s32 quirks = app->quirks;
1014         bool valid = true;
1015         bool confidence_state = true;
1016         bool inrange_state = false;
1017         int active;
1018         int slotnum;
1019         int tool = MT_TOOL_FINGER;
1020
1021         if (!slot)
1022                 return -EINVAL;
1023
1024         if ((quirks & MT_QUIRK_CONTACT_CNT_ACCURATE) &&
1025             app->num_received >= app->num_expected)
1026                 return -EAGAIN;
1027
1028         if (!(quirks & MT_QUIRK_ALWAYS_VALID)) {
1029                 if (quirks & MT_QUIRK_VALID_IS_INRANGE)
1030                         valid = *slot->inrange_state;
1031                 if (quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1032                         valid = *slot->tip_state;
1033                 if (quirks & MT_QUIRK_VALID_IS_CONFIDENCE)
1034                         valid = *slot->confidence_state;
1035
1036                 if (!valid)
1037                         return 0;
1038         }
1039
1040         slotnum = mt_compute_slot(td, app, slot, input);
1041         if (slotnum < 0 || slotnum >= td->maxcontacts)
1042                 return 0;
1043
1044         if ((quirks & MT_QUIRK_IGNORE_DUPLICATES) && mt) {
1045                 struct input_mt_slot *i_slot = &mt->slots[slotnum];
1046
1047                 if (input_mt_is_active(i_slot) &&
1048                     input_mt_is_used(mt, i_slot))
1049                         return -EAGAIN;
1050         }
1051
1052         if (quirks & MT_QUIRK_CONFIDENCE)
1053                 confidence_state = *slot->confidence_state;
1054
1055         if (quirks & MT_QUIRK_HOVERING)
1056                 inrange_state = *slot->inrange_state;
1057
1058         active = *slot->tip_state || inrange_state;
1059
1060         if (app->application == HID_GD_SYSTEM_MULTIAXIS)
1061                 tool = MT_TOOL_DIAL;
1062         else if (unlikely(!confidence_state)) {
1063                 tool = MT_TOOL_PALM;
1064                 if (!active && mt &&
1065                     input_mt_is_active(&mt->slots[slotnum])) {
1066                         /*
1067                          * The non-confidence was reported for
1068                          * previously valid contact that is also no
1069                          * longer valid. We can't simply report
1070                          * lift-off as userspace will not be aware
1071                          * of non-confidence, so we need to split
1072                          * it into 2 events: active MT_TOOL_PALM
1073                          * and a separate liftoff.
1074                          */
1075                         active = true;
1076                         set_bit(slotnum, app->pending_palm_slots);
1077                 }
1078         }
1079
1080         input_mt_slot(input, slotnum);
1081         input_mt_report_slot_state(input, tool, active);
1082         if (active) {
1083                 /* this finger is in proximity of the sensor */
1084                 int wide = (*slot->w > *slot->h);
1085                 int major = max(*slot->w, *slot->h);
1086                 int minor = min(*slot->w, *slot->h);
1087                 int orientation = wide;
1088                 int max_azimuth;
1089                 int azimuth;
1090                 int x;
1091                 int y;
1092                 int cx;
1093                 int cy;
1094
1095                 if (slot->a != DEFAULT_ZERO) {
1096                         /*
1097                          * Azimuth is counter-clockwise and ranges from [0, MAX)
1098                          * (a full revolution). Convert it to clockwise ranging
1099                          * [-MAX/2, MAX/2].
1100                          *
1101                          * Note that ABS_MT_ORIENTATION require us to report
1102                          * the limit of [-MAX/4, MAX/4], but the value can go
1103                          * out of range to [-MAX/2, MAX/2] to report an upside
1104                          * down ellipsis.
1105                          */
1106                         azimuth = *slot->a;
1107                         max_azimuth = input_abs_get_max(input,
1108                                                         ABS_MT_ORIENTATION);
1109                         if (azimuth > max_azimuth * 2)
1110                                 azimuth -= max_azimuth * 4;
1111                         orientation = -azimuth;
1112                         if (quirks & MT_QUIRK_ORIENTATION_INVERT)
1113                                 orientation = -orientation;
1114
1115                 }
1116
1117                 if (quirks & MT_QUIRK_TOUCH_SIZE_SCALING) {
1118                         /*
1119                          * divided by two to match visual scale of touch
1120                          * for devices with this quirk
1121                          */
1122                         major = major >> 1;
1123                         minor = minor >> 1;
1124                 }
1125
1126                 x = hdev->quirks & HID_QUIRK_X_INVERT ?
1127                         input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->x :
1128                         *slot->x;
1129                 y = hdev->quirks & HID_QUIRK_Y_INVERT ?
1130                         input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->y :
1131                         *slot->y;
1132                 cx = hdev->quirks & HID_QUIRK_X_INVERT ?
1133                         input_abs_get_max(input, ABS_MT_POSITION_X) - *slot->cx :
1134                         *slot->cx;
1135                 cy = hdev->quirks & HID_QUIRK_Y_INVERT ?
1136                         input_abs_get_max(input, ABS_MT_POSITION_Y) - *slot->cy :
1137                         *slot->cy;
1138
1139                 input_event(input, EV_ABS, ABS_MT_POSITION_X, x);
1140                 input_event(input, EV_ABS, ABS_MT_POSITION_Y, y);
1141                 input_event(input, EV_ABS, ABS_MT_TOOL_X, cx);
1142                 input_event(input, EV_ABS, ABS_MT_TOOL_Y, cy);
1143                 input_event(input, EV_ABS, ABS_MT_DISTANCE, !*slot->tip_state);
1144                 input_event(input, EV_ABS, ABS_MT_ORIENTATION, orientation);
1145                 input_event(input, EV_ABS, ABS_MT_PRESSURE, *slot->p);
1146                 input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
1147                 input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1148
1149                 set_bit(MT_IO_FLAGS_ACTIVE_SLOTS, &td->mt_io_flags);
1150         }
1151
1152         return 0;
1153 }
1154
1155 static void mt_process_mt_event(struct hid_device *hid,
1156                                 struct mt_application *app,
1157                                 struct hid_field *field,
1158                                 struct hid_usage *usage,
1159                                 __s32 value,
1160                                 bool first_packet)
1161 {
1162         __s32 quirks = app->quirks;
1163         struct input_dev *input = field->hidinput->input;
1164
1165         if (!usage->type || !(hid->claimed & HID_CLAIMED_INPUT))
1166                 return;
1167
1168         if (quirks & MT_QUIRK_WIN8_PTP_BUTTONS) {
1169
1170                 /*
1171                  * For Win8 PTP touchpads we should only look at
1172                  * non finger/touch events in the first_packet of a
1173                  * (possible) multi-packet frame.
1174                  */
1175                 if (!first_packet)
1176                         return;
1177
1178                 /*
1179                  * For Win8 PTP touchpads we map both the clickpad click
1180                  * and any "external" left buttons to BTN_LEFT if a
1181                  * device claims to have both we need to report 1 for
1182                  * BTN_LEFT if either is pressed, so we or all values
1183                  * together and report the result in mt_sync_frame().
1184                  */
1185                 if (usage->type == EV_KEY && usage->code == BTN_LEFT) {
1186                         app->left_button_state |= value;
1187                         return;
1188                 }
1189         }
1190
1191         input_event(input, usage->type, usage->code, value);
1192 }
1193
1194 static void mt_touch_report(struct hid_device *hid,
1195                             struct mt_report_data *rdata)
1196 {
1197         struct mt_device *td = hid_get_drvdata(hid);
1198         struct hid_report *report = rdata->report;
1199         struct mt_application *app = rdata->application;
1200         struct hid_field *field;
1201         struct input_dev *input;
1202         struct mt_usages *slot;
1203         bool first_packet;
1204         unsigned count;
1205         int r, n;
1206         int scantime = 0;
1207         int contact_count = -1;
1208
1209         /* sticky fingers release in progress, abort */
1210         if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1211                 return;
1212
1213         scantime = *app->scantime;
1214         app->timestamp = mt_compute_timestamp(app, scantime);
1215         if (app->raw_cc != DEFAULT_ZERO)
1216                 contact_count = *app->raw_cc;
1217
1218         /*
1219          * Includes multi-packet support where subsequent
1220          * packets are sent with zero contactcount.
1221          */
1222         if (contact_count >= 0) {
1223                 /*
1224                  * For Win8 PTPs the first packet (td->num_received == 0) may
1225                  * have a contactcount of 0 if there only is a button event.
1226                  * We double check that this is not a continuation packet
1227                  * of a possible multi-packet frame be checking that the
1228                  * timestamp has changed.
1229                  */
1230                 if ((app->quirks & MT_QUIRK_WIN8_PTP_BUTTONS) &&
1231                     app->num_received == 0 &&
1232                     app->prev_scantime != scantime)
1233                         app->num_expected = contact_count;
1234                 /* A non 0 contact count always indicates a first packet */
1235                 else if (contact_count)
1236                         app->num_expected = contact_count;
1237         }
1238         app->prev_scantime = scantime;
1239
1240         first_packet = app->num_received == 0;
1241
1242         input = report->field[0]->hidinput->input;
1243
1244         list_for_each_entry(slot, &app->mt_usages, list) {
1245                 if (!mt_process_slot(td, input, app, slot))
1246                         app->num_received++;
1247         }
1248
1249         for (r = 0; r < report->maxfield; r++) {
1250                 field = report->field[r];
1251                 count = field->report_count;
1252
1253                 if (!(HID_MAIN_ITEM_VARIABLE & field->flags))
1254                         continue;
1255
1256                 for (n = 0; n < count; n++)
1257                         mt_process_mt_event(hid, app, field,
1258                                             &field->usage[n], field->value[n],
1259                                             first_packet);
1260         }
1261
1262         if (app->num_received >= app->num_expected)
1263                 mt_sync_frame(td, app, input);
1264
1265         /*
1266          * Windows 8 specs says 2 things:
1267          * - once a contact has been reported, it has to be reported in each
1268          *   subsequent report
1269          * - the report rate when fingers are present has to be at least
1270          *   the refresh rate of the screen, 60 or 120 Hz
1271          *
1272          * I interprete this that the specification forces a report rate of
1273          * at least 60 Hz for a touchscreen to be certified.
1274          * Which means that if we do not get a report whithin 16 ms, either
1275          * something wrong happens, either the touchscreen forgets to send
1276          * a release. Taking a reasonable margin allows to remove issues
1277          * with USB communication or the load of the machine.
1278          *
1279          * Given that Win 8 devices are forced to send a release, this will
1280          * only affect laggish machines and the ones that have a firmware
1281          * defect.
1282          */
1283         if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
1284                 if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1285                         mod_timer(&td->release_timer,
1286                                   jiffies + msecs_to_jiffies(100));
1287                 else
1288                         del_timer(&td->release_timer);
1289         }
1290
1291         clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1292 }
1293
1294 static int mt_touch_input_configured(struct hid_device *hdev,
1295                                      struct hid_input *hi,
1296                                      struct mt_application *app)
1297 {
1298         struct mt_device *td = hid_get_drvdata(hdev);
1299         struct mt_class *cls = &td->mtclass;
1300         struct input_dev *input = hi->input;
1301         int ret;
1302
1303         if (!td->maxcontacts)
1304                 td->maxcontacts = MT_DEFAULT_MAXCONTACT;
1305
1306         mt_post_parse(td, app);
1307         if (td->serial_maybe)
1308                 mt_post_parse_default_settings(td, app);
1309
1310         if (cls->is_indirect)
1311                 app->mt_flags |= INPUT_MT_POINTER;
1312
1313         if (app->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
1314                 app->mt_flags |= INPUT_MT_DROP_UNUSED;
1315
1316         /* check for clickpads */
1317         if ((app->mt_flags & INPUT_MT_POINTER) &&
1318             (app->buttons_count == 1))
1319                 td->is_buttonpad = true;
1320
1321         if (td->is_buttonpad)
1322                 __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
1323
1324         app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
1325                                                BITS_TO_LONGS(td->maxcontacts),
1326                                                sizeof(long),
1327                                                GFP_KERNEL);
1328         if (!app->pending_palm_slots)
1329                 return -ENOMEM;
1330
1331         ret = input_mt_init_slots(input, td->maxcontacts, app->mt_flags);
1332         if (ret)
1333                 return ret;
1334
1335         app->mt_flags = 0;
1336         return 0;
1337 }
1338
1339 #define mt_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, \
1340                                                     max, EV_KEY, (c))
1341 static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
1342                 struct hid_field *field, struct hid_usage *usage,
1343                 unsigned long **bit, int *max)
1344 {
1345         struct mt_device *td = hid_get_drvdata(hdev);
1346         struct mt_application *application;
1347         struct mt_report_data *rdata;
1348
1349         rdata = mt_find_report_data(td, field->report);
1350         if (!rdata) {
1351                 hid_err(hdev, "failed to allocate data for report\n");
1352                 return 0;
1353         }
1354
1355         application = rdata->application;
1356
1357         /*
1358          * If mtclass.export_all_inputs is not set, only map fields from
1359          * TouchScreen or TouchPad collections. We need to ignore fields
1360          * that belong to other collections such as Mouse that might have
1361          * the same GenericDesktop usages.
1362          */
1363         if (!td->mtclass.export_all_inputs &&
1364             field->application != HID_DG_TOUCHSCREEN &&
1365             field->application != HID_DG_PEN &&
1366             field->application != HID_DG_TOUCHPAD &&
1367             field->application != HID_GD_KEYBOARD &&
1368             field->application != HID_GD_SYSTEM_CONTROL &&
1369             field->application != HID_CP_CONSUMER_CONTROL &&
1370             field->application != HID_GD_WIRELESS_RADIO_CTLS &&
1371             field->application != HID_GD_SYSTEM_MULTIAXIS &&
1372             !(field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1373               application->quirks & MT_QUIRK_ASUS_CUSTOM_UP))
1374                 return -1;
1375
1376         /*
1377          * Some Asus keyboard+touchpad devices have the hotkeys defined in the
1378          * touchpad report descriptor. We need to treat these as an array to
1379          * map usages to input keys.
1380          */
1381         if (field->application == HID_VD_ASUS_CUSTOM_MEDIA_KEYS &&
1382             application->quirks & MT_QUIRK_ASUS_CUSTOM_UP &&
1383             (usage->hid & HID_USAGE_PAGE) == HID_UP_CUSTOM) {
1384                 set_bit(EV_REP, hi->input->evbit);
1385                 if (field->flags & HID_MAIN_ITEM_VARIABLE)
1386                         field->flags &= ~HID_MAIN_ITEM_VARIABLE;
1387                 switch (usage->hid & HID_USAGE) {
1388                 case 0x10: mt_map_key_clear(KEY_BRIGHTNESSDOWN);        break;
1389                 case 0x20: mt_map_key_clear(KEY_BRIGHTNESSUP);          break;
1390                 case 0x35: mt_map_key_clear(KEY_DISPLAY_OFF);           break;
1391                 case 0x6b: mt_map_key_clear(KEY_F21);                   break;
1392                 case 0x6c: mt_map_key_clear(KEY_SLEEP);                 break;
1393                 default:
1394                         return -1;
1395                 }
1396                 return 1;
1397         }
1398
1399         if (rdata->is_mt_collection)
1400                 return mt_touch_input_mapping(hdev, hi, field, usage, bit, max,
1401                                               application);
1402
1403         /*
1404          * some egalax touchscreens have "application == DG_TOUCHSCREEN"
1405          * for the stylus. Overwrite the hid_input application
1406          */
1407         if (field->physical == HID_DG_STYLUS)
1408                 hi->application = HID_DG_STYLUS;
1409
1410         /* let hid-core decide for the others */
1411         return 0;
1412 }
1413
1414 static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
1415                 struct hid_field *field, struct hid_usage *usage,
1416                 unsigned long **bit, int *max)
1417 {
1418         struct mt_device *td = hid_get_drvdata(hdev);
1419         struct mt_report_data *rdata;
1420
1421         rdata = mt_find_report_data(td, field->report);
1422         if (rdata && rdata->is_mt_collection) {
1423                 /* We own these mappings, tell hid-input to ignore them */
1424                 return -1;
1425         }
1426
1427         /* let hid-core decide for the others */
1428         return 0;
1429 }
1430
1431 static int mt_event(struct hid_device *hid, struct hid_field *field,
1432                                 struct hid_usage *usage, __s32 value)
1433 {
1434         struct mt_device *td = hid_get_drvdata(hid);
1435         struct mt_report_data *rdata;
1436
1437         rdata = mt_find_report_data(td, field->report);
1438         if (rdata && rdata->is_mt_collection)
1439                 return mt_touch_event(hid, field, usage, value);
1440
1441         return 0;
1442 }
1443
1444 static void mt_report(struct hid_device *hid, struct hid_report *report)
1445 {
1446         struct mt_device *td = hid_get_drvdata(hid);
1447         struct hid_field *field = report->field[0];
1448         struct mt_report_data *rdata;
1449
1450         if (!(hid->claimed & HID_CLAIMED_INPUT))
1451                 return;
1452
1453         rdata = mt_find_report_data(td, report);
1454         if (rdata && rdata->is_mt_collection)
1455                 return mt_touch_report(hid, rdata);
1456
1457         if (field && field->hidinput && field->hidinput->input)
1458                 input_sync(field->hidinput->input);
1459 }
1460
1461 static bool mt_need_to_apply_feature(struct hid_device *hdev,
1462                                      struct hid_field *field,
1463                                      struct hid_usage *usage,
1464                                      enum latency_mode latency,
1465                                      bool surface_switch,
1466                                      bool button_switch,
1467                                      bool *inputmode_found)
1468 {
1469         struct mt_device *td = hid_get_drvdata(hdev);
1470         struct mt_class *cls = &td->mtclass;
1471         struct hid_report *report = field->report;
1472         unsigned int index = usage->usage_index;
1473         char *buf;
1474         u32 report_len;
1475         int max;
1476
1477         switch (usage->hid) {
1478         case HID_DG_INPUTMODE:
1479                 /*
1480                  * Some elan panels wrongly declare 2 input mode features,
1481                  * and silently ignore when we set the value in the second
1482                  * field. Skip the second feature and hope for the best.
1483                  */
1484                 if (*inputmode_found)
1485                         return false;
1486
1487                 if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
1488                         report_len = hid_report_len(report);
1489                         buf = hid_alloc_report_buf(report, GFP_KERNEL);
1490                         if (!buf) {
1491                                 hid_err(hdev,
1492                                         "failed to allocate buffer for report\n");
1493                                 return false;
1494                         }
1495                         hid_hw_raw_request(hdev, report->id, buf, report_len,
1496                                            HID_FEATURE_REPORT,
1497                                            HID_REQ_GET_REPORT);
1498                         kfree(buf);
1499                 }
1500
1501                 field->value[index] = td->inputmode_value;
1502                 *inputmode_found = true;
1503                 return true;
1504
1505         case HID_DG_CONTACTMAX:
1506                 if (cls->maxcontacts) {
1507                         max = min_t(int, field->logical_maximum,
1508                                     cls->maxcontacts);
1509                         if (field->value[index] != max) {
1510                                 field->value[index] = max;
1511                                 return true;
1512                         }
1513                 }
1514                 break;
1515
1516         case HID_DG_LATENCYMODE:
1517                 field->value[index] = latency;
1518                 return true;
1519
1520         case HID_DG_SURFACESWITCH:
1521                 field->value[index] = surface_switch;
1522                 return true;
1523
1524         case HID_DG_BUTTONSWITCH:
1525                 field->value[index] = button_switch;
1526                 return true;
1527         }
1528
1529         return false; /* no need to update the report */
1530 }
1531
1532 static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
1533                          bool surface_switch, bool button_switch)
1534 {
1535         struct hid_report_enum *rep_enum;
1536         struct hid_report *rep;
1537         struct hid_usage *usage;
1538         int i, j;
1539         bool update_report;
1540         bool inputmode_found = false;
1541
1542         rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
1543         list_for_each_entry(rep, &rep_enum->report_list, list) {
1544                 update_report = false;
1545
1546                 for (i = 0; i < rep->maxfield; i++) {
1547                         /* Ignore if report count is out of bounds. */
1548                         if (rep->field[i]->report_count < 1)
1549                                 continue;
1550
1551                         for (j = 0; j < rep->field[i]->maxusage; j++) {
1552                                 usage = &rep->field[i]->usage[j];
1553
1554                                 if (mt_need_to_apply_feature(hdev,
1555                                                              rep->field[i],
1556                                                              usage,
1557                                                              latency,
1558                                                              surface_switch,
1559                                                              button_switch,
1560                                                              &inputmode_found))
1561                                         update_report = true;
1562                         }
1563                 }
1564
1565                 if (update_report)
1566                         hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
1567         }
1568 }
1569
1570 static void mt_post_parse_default_settings(struct mt_device *td,
1571                                            struct mt_application *app)
1572 {
1573         __s32 quirks = app->quirks;
1574
1575         /* unknown serial device needs special quirks */
1576         if (list_is_singular(&app->mt_usages)) {
1577                 quirks |= MT_QUIRK_ALWAYS_VALID;
1578                 quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
1579                 quirks &= ~MT_QUIRK_VALID_IS_INRANGE;
1580                 quirks &= ~MT_QUIRK_VALID_IS_CONFIDENCE;
1581                 quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1582         }
1583
1584         app->quirks = quirks;
1585 }
1586
1587 static void mt_post_parse(struct mt_device *td, struct mt_application *app)
1588 {
1589         if (!app->have_contact_count)
1590                 app->quirks &= ~MT_QUIRK_CONTACT_CNT_ACCURATE;
1591 }
1592
1593 static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
1594 {
1595         struct mt_device *td = hid_get_drvdata(hdev);
1596         const char *suffix = NULL;
1597         struct mt_report_data *rdata;
1598         struct mt_application *mt_application = NULL;
1599         struct hid_report *report;
1600         int ret;
1601
1602         list_for_each_entry(report, &hi->reports, hidinput_list) {
1603                 rdata = mt_find_report_data(td, report);
1604                 if (!rdata) {
1605                         hid_err(hdev, "failed to allocate data for report\n");
1606                         return -ENOMEM;
1607                 }
1608
1609                 mt_application = rdata->application;
1610
1611                 if (rdata->is_mt_collection) {
1612                         ret = mt_touch_input_configured(hdev, hi,
1613                                                         mt_application);
1614                         if (ret)
1615                                 return ret;
1616                 }
1617         }
1618
1619         switch (hi->application) {
1620         case HID_GD_KEYBOARD:
1621         case HID_GD_KEYPAD:
1622         case HID_GD_MOUSE:
1623         case HID_DG_TOUCHPAD:
1624         case HID_GD_SYSTEM_CONTROL:
1625         case HID_CP_CONSUMER_CONTROL:
1626         case HID_GD_WIRELESS_RADIO_CTLS:
1627         case HID_GD_SYSTEM_MULTIAXIS:
1628                 /* already handled by hid core */
1629                 break;
1630         case HID_DG_TOUCHSCREEN:
1631                 /* we do not set suffix = "Touchscreen" */
1632                 hi->input->name = hdev->name;
1633                 break;
1634         case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
1635                 suffix = "Custom Media Keys";
1636                 break;
1637         case HID_DG_STYLUS:
1638                 /* force BTN_STYLUS to allow tablet matching in udev */
1639                 __set_bit(BTN_STYLUS, hi->input->keybit);
1640                 break;
1641         default:
1642                 suffix = "UNKNOWN";
1643                 break;
1644         }
1645
1646         if (suffix)
1647                 hi->input->name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
1648                                                  "%s %s", hdev->name, suffix);
1649
1650         return 0;
1651 }
1652
1653 static void mt_fix_const_field(struct hid_field *field, unsigned int usage)
1654 {
1655         if (field->usage[0].hid != usage ||
1656             !(field->flags & HID_MAIN_ITEM_CONSTANT))
1657                 return;
1658
1659         field->flags &= ~HID_MAIN_ITEM_CONSTANT;
1660         field->flags |= HID_MAIN_ITEM_VARIABLE;
1661 }
1662
1663 static void mt_fix_const_fields(struct hid_device *hdev, unsigned int usage)
1664 {
1665         struct hid_report *report;
1666         int i;
1667
1668         list_for_each_entry(report,
1669                             &hdev->report_enum[HID_INPUT_REPORT].report_list,
1670                             list) {
1671
1672                 if (!report->maxfield)
1673                         continue;
1674
1675                 for (i = 0; i < report->maxfield; i++)
1676                         if (report->field[i]->maxusage >= 1)
1677                                 mt_fix_const_field(report->field[i], usage);
1678         }
1679 }
1680
1681 static void mt_release_contacts(struct hid_device *hid)
1682 {
1683         struct hid_input *hidinput;
1684         struct mt_application *application;
1685         struct mt_device *td = hid_get_drvdata(hid);
1686
1687         list_for_each_entry(hidinput, &hid->inputs, list) {
1688                 struct input_dev *input_dev = hidinput->input;
1689                 struct input_mt *mt = input_dev->mt;
1690                 int i;
1691
1692                 if (mt) {
1693                         for (i = 0; i < mt->num_slots; i++) {
1694                                 input_mt_slot(input_dev, i);
1695                                 input_mt_report_slot_inactive(input_dev);
1696                         }
1697                         input_mt_sync_frame(input_dev);
1698                         input_sync(input_dev);
1699                 }
1700         }
1701
1702         list_for_each_entry(application, &td->applications, list) {
1703                 application->num_received = 0;
1704         }
1705 }
1706
1707 static void mt_expired_timeout(struct timer_list *t)
1708 {
1709         struct mt_device *td = from_timer(td, t, release_timer);
1710         struct hid_device *hdev = td->hdev;
1711
1712         /*
1713          * An input report came in just before we release the sticky fingers,
1714          * it will take care of the sticky fingers.
1715          */
1716         if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
1717                 return;
1718         if (test_bit(MT_IO_FLAGS_PENDING_SLOTS, &td->mt_io_flags))
1719                 mt_release_contacts(hdev);
1720         clear_bit_unlock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags);
1721 }
1722
1723 static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
1724 {
1725         int ret, i;
1726         struct mt_device *td;
1727         const struct mt_class *mtclass = mt_classes; /* MT_CLS_DEFAULT */
1728
1729         for (i = 0; mt_classes[i].name ; i++) {
1730                 if (id->driver_data == mt_classes[i].name) {
1731                         mtclass = &(mt_classes[i]);
1732                         break;
1733                 }
1734         }
1735
1736         td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL);
1737         if (!td) {
1738                 dev_err(&hdev->dev, "cannot allocate multitouch data\n");
1739                 return -ENOMEM;
1740         }
1741         td->hdev = hdev;
1742         td->mtclass = *mtclass;
1743         td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
1744         hid_set_drvdata(hdev, td);
1745
1746         INIT_LIST_HEAD(&td->applications);
1747         INIT_LIST_HEAD(&td->reports);
1748
1749         if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID)
1750                 td->serial_maybe = true;
1751
1752
1753         /* Orientation is inverted if the X or Y axes are
1754          * flipped, but normalized if both are inverted.
1755          */
1756         if (hdev->quirks & (HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT) &&
1757             !((hdev->quirks & HID_QUIRK_X_INVERT)
1758               && (hdev->quirks & HID_QUIRK_Y_INVERT)))
1759                 td->mtclass.quirks = MT_QUIRK_ORIENTATION_INVERT;
1760
1761         /* This allows the driver to correctly support devices
1762          * that emit events over several HID messages.
1763          */
1764         hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;
1765
1766         /*
1767          * This allows the driver to handle different input sensors
1768          * that emits events through different applications on the same HID
1769          * device.
1770          */
1771         hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
1772
1773         if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
1774                 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1775
1776         if (mtclass->quirks & MT_QUIRK_FORCE_MULTI_INPUT) {
1777                 hdev->quirks &= ~HID_QUIRK_INPUT_PER_APP;
1778                 hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1779         }
1780
1781         timer_setup(&td->release_timer, mt_expired_timeout, 0);
1782
1783         ret = hid_parse(hdev);
1784         if (ret != 0)
1785                 return ret;
1786
1787         if (mtclass->quirks & MT_QUIRK_FIX_CONST_CONTACT_ID)
1788                 mt_fix_const_fields(hdev, HID_DG_CONTACTID);
1789
1790         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1791         if (ret)
1792                 return ret;
1793
1794         ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group);
1795         if (ret)
1796                 dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
1797                                 hdev->name);
1798
1799         mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1800
1801         return 0;
1802 }
1803
1804 static int mt_suspend(struct hid_device *hdev, pm_message_t state)
1805 {
1806         struct mt_device *td = hid_get_drvdata(hdev);
1807
1808         /* High latency is desirable for power savings during S3/S0ix */
1809         if ((td->mtclass.quirks & MT_QUIRK_DISABLE_WAKEUP) ||
1810             !hid_hw_may_wakeup(hdev))
1811                 mt_set_modes(hdev, HID_LATENCY_HIGH, false, false);
1812         else
1813                 mt_set_modes(hdev, HID_LATENCY_HIGH, true, true);
1814
1815         return 0;
1816 }
1817
1818 static int mt_reset_resume(struct hid_device *hdev)
1819 {
1820         mt_release_contacts(hdev);
1821         mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1822         return 0;
1823 }
1824
1825 static int mt_resume(struct hid_device *hdev)
1826 {
1827         /* Some Elan legacy devices require SET_IDLE to be set on resume.
1828          * It should be safe to send it to other devices too.
1829          * Tested on 3M, Stantum, Cypress, Zytronic, eGalax, and Elan panels. */
1830
1831         hid_hw_idle(hdev, 0, 0, HID_REQ_SET_IDLE);
1832
1833         mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
1834
1835         return 0;
1836 }
1837
1838 static void mt_remove(struct hid_device *hdev)
1839 {
1840         struct mt_device *td = hid_get_drvdata(hdev);
1841
1842         del_timer_sync(&td->release_timer);
1843
1844         sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
1845         hid_hw_stop(hdev);
1846 }
1847
1848 /*
1849  * This list contains only:
1850  * - VID/PID of products not working with the default multitouch handling
1851  * - 2 generic rules.
1852  * So there is no point in adding here any device with MT_CLS_DEFAULT.
1853  */
1854 static const struct hid_device_id mt_devices[] = {
1855
1856         /* 3M panels */
1857         { .driver_data = MT_CLS_3M,
1858                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1859                         USB_DEVICE_ID_3M1968) },
1860         { .driver_data = MT_CLS_3M,
1861                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1862                         USB_DEVICE_ID_3M2256) },
1863         { .driver_data = MT_CLS_3M,
1864                 MT_USB_DEVICE(USB_VENDOR_ID_3M,
1865                         USB_DEVICE_ID_3M3266) },
1866
1867         /* Anton devices */
1868         { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1869                 MT_USB_DEVICE(USB_VENDOR_ID_ANTON,
1870                         USB_DEVICE_ID_ANTON_TOUCH_PAD) },
1871
1872         /* Asus T101HA */
1873         { .driver_data = MT_CLS_WIN_8_DISABLE_WAKEUP,
1874                 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1875                            USB_VENDOR_ID_ASUSTEK,
1876                            USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) },
1877
1878         /* Asus T304UA */
1879         { .driver_data = MT_CLS_ASUS,
1880                 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
1881                         USB_VENDOR_ID_ASUSTEK,
1882                         USB_DEVICE_ID_ASUSTEK_T304_KEYBOARD) },
1883
1884         /* Atmel panels */
1885         { .driver_data = MT_CLS_SERIAL,
1886                 MT_USB_DEVICE(USB_VENDOR_ID_ATMEL,
1887                         USB_DEVICE_ID_ATMEL_MXT_DIGITIZER) },
1888
1889         /* Baanto multitouch devices */
1890         { .driver_data = MT_CLS_NSMU,
1891                 MT_USB_DEVICE(USB_VENDOR_ID_BAANTO,
1892                         USB_DEVICE_ID_BAANTO_MT_190W2) },
1893
1894         /* Cando panels */
1895         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1896                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1897                         USB_DEVICE_ID_CANDO_MULTI_TOUCH) },
1898         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
1899                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
1900                         USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) },
1901
1902         /* Chunghwa Telecom touch panels */
1903         {  .driver_data = MT_CLS_NSMU,
1904                 MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT,
1905                         USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
1906
1907         /* CJTouch panels */
1908         { .driver_data = MT_CLS_NSMU,
1909                 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1910                         USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020) },
1911         { .driver_data = MT_CLS_NSMU,
1912                 MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,
1913                         USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040) },
1914
1915         /* CVTouch panels */
1916         { .driver_data = MT_CLS_NSMU,
1917                 MT_USB_DEVICE(USB_VENDOR_ID_CVTOUCH,
1918                         USB_DEVICE_ID_CVTOUCH_SCREEN) },
1919
1920         /* eGalax devices (SAW) */
1921         { .driver_data = MT_CLS_EXPORT_ALL_INPUTS,
1922                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1923                         USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER) },
1924
1925         /* eGalax devices (resistive) */
1926         { .driver_data = MT_CLS_EGALAX,
1927                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1928                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480D) },
1929         { .driver_data = MT_CLS_EGALAX,
1930                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1931                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_480E) },
1932
1933         /* eGalax devices (capacitive) */
1934         { .driver_data = MT_CLS_EGALAX_SERIAL,
1935                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1936                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7207) },
1937         { .driver_data = MT_CLS_EGALAX,
1938                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1939                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_720C) },
1940         { .driver_data = MT_CLS_EGALAX_SERIAL,
1941                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1942                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7224) },
1943         { .driver_data = MT_CLS_EGALAX_SERIAL,
1944                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1945                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_722A) },
1946         { .driver_data = MT_CLS_EGALAX_SERIAL,
1947                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1948                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_725E) },
1949         { .driver_data = MT_CLS_EGALAX_SERIAL,
1950                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1951                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7262) },
1952         { .driver_data = MT_CLS_EGALAX,
1953                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1954                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_726B) },
1955         { .driver_data = MT_CLS_EGALAX,
1956                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1957                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72A1) },
1958         { .driver_data = MT_CLS_EGALAX_SERIAL,
1959                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1960                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72AA) },
1961         { .driver_data = MT_CLS_EGALAX,
1962                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1963                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72C4) },
1964         { .driver_data = MT_CLS_EGALAX,
1965                 HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
1966                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72D0) },
1967         { .driver_data = MT_CLS_EGALAX,
1968                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1969                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_72FA) },
1970         { .driver_data = MT_CLS_EGALAX,
1971                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1972                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7302) },
1973         { .driver_data = MT_CLS_EGALAX_SERIAL,
1974                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1975                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_7349) },
1976         { .driver_data = MT_CLS_EGALAX_SERIAL,
1977                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1978                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_73F7) },
1979         { .driver_data = MT_CLS_EGALAX_SERIAL,
1980                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1981                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_A001) },
1982         { .driver_data = MT_CLS_EGALAX,
1983                 MT_USB_DEVICE(USB_VENDOR_ID_DWAV,
1984                         USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH_C002) },
1985
1986         /* Elan devices */
1987         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1988                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1989                         USB_VENDOR_ID_ELAN, 0x313a) },
1990
1991         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
1992                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
1993                         USB_VENDOR_ID_ELAN, 0x3148) },
1994
1995         /* Elitegroup panel */
1996         { .driver_data = MT_CLS_SERIAL,
1997                 MT_USB_DEVICE(USB_VENDOR_ID_ELITEGROUP,
1998                         USB_DEVICE_ID_ELITEGROUP_05D8) },
1999
2000         /* Flatfrog Panels */
2001         { .driver_data = MT_CLS_FLATFROG,
2002                 MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
2003                         USB_DEVICE_ID_MULTITOUCH_3200) },
2004
2005         /* FocalTech Panels */
2006         { .driver_data = MT_CLS_SERIAL,
2007                 MT_USB_DEVICE(USB_VENDOR_ID_CYGNAL,
2008                         USB_DEVICE_ID_FOCALTECH_FTXXXX_MULTITOUCH) },
2009
2010         /* GeneralTouch panel */
2011         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2012                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2013                         USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS) },
2014         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2015                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2016                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS) },
2017         { .driver_data = MT_CLS_GENERALTOUCH_TWOFINGERS,
2018                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2019                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0101) },
2020         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2021                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2022                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0102) },
2023         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2024                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2025                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_0106) },
2026         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2027                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2028                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_010A) },
2029         { .driver_data = MT_CLS_GENERALTOUCH_PWT_TENFINGERS,
2030                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,
2031                         USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PIT_E100) },
2032
2033         /* Gametel game controller */
2034         { .driver_data = MT_CLS_NSMU,
2035                 MT_BT_DEVICE(USB_VENDOR_ID_FRUCTEL,
2036                         USB_DEVICE_ID_GAMETEL_MT_MODE) },
2037
2038         /* GoodTouch panels */
2039         { .driver_data = MT_CLS_NSMU,
2040                 MT_USB_DEVICE(USB_VENDOR_ID_GOODTOUCH,
2041                         USB_DEVICE_ID_GOODTOUCH_000f) },
2042
2043         /* Hanvon panels */
2044         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2045                 MT_USB_DEVICE(USB_VENDOR_ID_HANVON_ALT,
2046                         USB_DEVICE_ID_HANVON_ALT_MULTITOUCH) },
2047
2048         /* HONOR GLO-GXXX panel */
2049         { .driver_data = MT_CLS_VTL,
2050                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2051                         0x347d, 0x7853) },
2052
2053         /* Ilitek dual touch panel */
2054         {  .driver_data = MT_CLS_NSMU,
2055                 MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
2056                         USB_DEVICE_ID_ILITEK_MULTITOUCH) },
2057
2058         /* LG Melfas panel */
2059         { .driver_data = MT_CLS_LG,
2060                 HID_USB_DEVICE(USB_VENDOR_ID_LG,
2061                         USB_DEVICE_ID_LG_MELFAS_MT) },
2062         { .driver_data = MT_CLS_LG,
2063                 HID_DEVICE(BUS_I2C, HID_GROUP_GENERIC,
2064                         USB_VENDOR_ID_LG, I2C_DEVICE_ID_LG_7010) },
2065
2066         /* Lenovo X1 TAB Gen 2 */
2067         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2068                 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2069                            USB_VENDOR_ID_LENOVO,
2070                            USB_DEVICE_ID_LENOVO_X1_TAB) },
2071
2072         /* Lenovo X1 TAB Gen 3 */
2073         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2074                 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2075                            USB_VENDOR_ID_LENOVO,
2076                            USB_DEVICE_ID_LENOVO_X1_TAB3) },
2077
2078         /* Lenovo X12 TAB Gen 1 */
2079         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT_NSMU,
2080                 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8,
2081                            USB_VENDOR_ID_LENOVO,
2082                            USB_DEVICE_ID_LENOVO_X12_TAB) },
2083
2084         /* Logitech devices */
2085         { .driver_data = MT_CLS_NSMU,
2086                 HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_MULTITOUCH_WIN_8,
2087                         USB_VENDOR_ID_LOGITECH,
2088                         USB_DEVICE_ID_LOGITECH_CASA_TOUCHPAD) },
2089
2090         /* MosArt panels */
2091         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2092                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
2093                         USB_DEVICE_ID_ASUS_T91MT)},
2094         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2095                 MT_USB_DEVICE(USB_VENDOR_ID_ASUS,
2096                         USB_DEVICE_ID_ASUSTEK_MULTITOUCH_YFO) },
2097         { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
2098                 MT_USB_DEVICE(USB_VENDOR_ID_TURBOX,
2099                         USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART) },
2100
2101         /* Novatek Panel */
2102         { .driver_data = MT_CLS_NSMU,
2103                 MT_USB_DEVICE(USB_VENDOR_ID_NOVATEK,
2104                         USB_DEVICE_ID_NOVATEK_PCT) },
2105
2106         /* Ntrig Panel */
2107         { .driver_data = MT_CLS_NSMU,
2108                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2109                         USB_VENDOR_ID_NTRIG, 0x1b05) },
2110
2111         /* Panasonic panels */
2112         { .driver_data = MT_CLS_PANASONIC,
2113                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2114                         USB_DEVICE_ID_PANABOARD_UBT780) },
2115         { .driver_data = MT_CLS_PANASONIC,
2116                 MT_USB_DEVICE(USB_VENDOR_ID_PANASONIC,
2117                         USB_DEVICE_ID_PANABOARD_UBT880) },
2118
2119         /* PixArt optical touch screen */
2120         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2121                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2122                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN) },
2123         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2124                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2125                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1) },
2126         { .driver_data = MT_CLS_INRANGE_CONTACTNUMBER,
2127                 MT_USB_DEVICE(USB_VENDOR_ID_PIXART,
2128                         USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2) },
2129
2130         /* PixCir-based panels */
2131         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTID,
2132                 MT_USB_DEVICE(USB_VENDOR_ID_CANDO,
2133                         USB_DEVICE_ID_CANDO_PIXCIR_MULTI_TOUCH) },
2134
2135         /* Quanta-based panels */
2136         { .driver_data = MT_CLS_CONFIDENCE_CONTACT_ID,
2137                 MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
2138                         USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
2139
2140         /* Razer touchpads */
2141         { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
2142                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2143                         USB_VENDOR_ID_SYNAPTICS, 0x8323) },
2144
2145         /* Smart Tech panels */
2146         { .driver_data = MT_CLS_SMART_TECH,
2147                 MT_USB_DEVICE(0x0b8c, 0x0092)},
2148
2149         /* Stantum panels */
2150         { .driver_data = MT_CLS_CONFIDENCE,
2151                 MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,
2152                         USB_DEVICE_ID_MTP_STM)},
2153
2154         /* Synaptics devices */
2155         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2156                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2157                         USB_VENDOR_ID_SYNAPTICS, 0xcd7e) },
2158
2159         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2160                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2161                         USB_VENDOR_ID_SYNAPTICS, 0xcddc) },
2162
2163         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2164                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2165                         USB_VENDOR_ID_SYNAPTICS, 0xce08) },
2166
2167         { .driver_data = MT_CLS_WIN_8_FORCE_MULTI_INPUT,
2168                 HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
2169                         USB_VENDOR_ID_SYNAPTICS, 0xce09) },
2170
2171         /* TopSeed panels */
2172         { .driver_data = MT_CLS_TOPSEED,
2173                 MT_USB_DEVICE(USB_VENDOR_ID_TOPSEED2,
2174                         USB_DEVICE_ID_TOPSEED2_PERIPAD_701) },
2175
2176         /* Touch International panels */
2177         { .driver_data = MT_CLS_NSMU,
2178                 MT_USB_DEVICE(USB_VENDOR_ID_TOUCH_INTL,
2179                         USB_DEVICE_ID_TOUCH_INTL_MULTI_TOUCH) },
2180
2181         /* Unitec panels */
2182         { .driver_data = MT_CLS_NSMU,
2183                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2184                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0709) },
2185         { .driver_data = MT_CLS_NSMU,
2186                 MT_USB_DEVICE(USB_VENDOR_ID_UNITEC,
2187                         USB_DEVICE_ID_UNITEC_USB_TOUCH_0A19) },
2188
2189         /* VTL panels */
2190         { .driver_data = MT_CLS_VTL,
2191                 MT_USB_DEVICE(USB_VENDOR_ID_VTL,
2192                         USB_DEVICE_ID_VTL_MULTITOUCH_FF3F) },
2193
2194         /* Winbond Electronics Corp. */
2195         { .driver_data = MT_CLS_WIN_8_NO_STICKY_FINGERS,
2196                 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2197                            USB_VENDOR_ID_WINBOND, USB_DEVICE_ID_TSTP_MTOUCH) },
2198
2199         /* Wistron panels */
2200         { .driver_data = MT_CLS_NSMU,
2201                 MT_USB_DEVICE(USB_VENDOR_ID_WISTRON,
2202                         USB_DEVICE_ID_WISTRON_OPTICAL_TOUCH) },
2203
2204         /* XAT */
2205         { .driver_data = MT_CLS_NSMU,
2206                 MT_USB_DEVICE(USB_VENDOR_ID_XAT,
2207                         USB_DEVICE_ID_XAT_CSR) },
2208
2209         /* Xiroku */
2210         { .driver_data = MT_CLS_NSMU,
2211                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2212                         USB_DEVICE_ID_XIROKU_SPX) },
2213         { .driver_data = MT_CLS_NSMU,
2214                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2215                         USB_DEVICE_ID_XIROKU_MPX) },
2216         { .driver_data = MT_CLS_NSMU,
2217                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2218                         USB_DEVICE_ID_XIROKU_CSR) },
2219         { .driver_data = MT_CLS_NSMU,
2220                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2221                         USB_DEVICE_ID_XIROKU_SPX1) },
2222         { .driver_data = MT_CLS_NSMU,
2223                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2224                         USB_DEVICE_ID_XIROKU_MPX1) },
2225         { .driver_data = MT_CLS_NSMU,
2226                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2227                         USB_DEVICE_ID_XIROKU_CSR1) },
2228         { .driver_data = MT_CLS_NSMU,
2229                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2230                         USB_DEVICE_ID_XIROKU_SPX2) },
2231         { .driver_data = MT_CLS_NSMU,
2232                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2233                         USB_DEVICE_ID_XIROKU_MPX2) },
2234         { .driver_data = MT_CLS_NSMU,
2235                 MT_USB_DEVICE(USB_VENDOR_ID_XIROKU,
2236                         USB_DEVICE_ID_XIROKU_CSR2) },
2237
2238         /* Google MT devices */
2239         { .driver_data = MT_CLS_GOOGLE,
2240                 HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_GOOGLE,
2241                         USB_DEVICE_ID_GOOGLE_TOUCH_ROSE) },
2242         { .driver_data = MT_CLS_GOOGLE,
2243                 HID_DEVICE(BUS_USB, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_GOOGLE,
2244                         USB_DEVICE_ID_GOOGLE_WHISKERS) },
2245
2246         /* Generic MT device */
2247         { HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH, HID_ANY_ID, HID_ANY_ID) },
2248
2249         /* Generic Win 8 certified MT device */
2250         {  .driver_data = MT_CLS_WIN_8,
2251                 HID_DEVICE(HID_BUS_ANY, HID_GROUP_MULTITOUCH_WIN_8,
2252                         HID_ANY_ID, HID_ANY_ID) },
2253         { }
2254 };
2255 MODULE_DEVICE_TABLE(hid, mt_devices);
2256
2257 static const struct hid_usage_id mt_grabbed_usages[] = {
2258         { HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
2259         { HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
2260 };
2261
2262 static struct hid_driver mt_driver = {
2263         .name = "hid-multitouch",
2264         .id_table = mt_devices,
2265         .probe = mt_probe,
2266         .remove = mt_remove,
2267         .input_mapping = mt_input_mapping,
2268         .input_mapped = mt_input_mapped,
2269         .input_configured = mt_input_configured,
2270         .feature_mapping = mt_feature_mapping,
2271         .usage_table = mt_grabbed_usages,
2272         .event = mt_event,
2273         .report = mt_report,
2274         .suspend = pm_ptr(mt_suspend),
2275         .reset_resume = pm_ptr(mt_reset_resume),
2276         .resume = pm_ptr(mt_resume),
2277 };
2278 module_hid_driver(mt_driver);