drivers/hid/hid-input.c

   1 /*
   2  *  Copyright (c) 2000-2001 Vojtech Pavlik
   3  *  Copyright (c) 2006-2010 Jiri Kosina
   4  *
   5  *  HID to Linux Input mapping
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  *
  23  * Should you need to contact me, the author, you can do so either by
  24  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  25  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  26  */
  27
  28 #include <linux/module.h>
  29 #include <linux/slab.h>
  30 #include <linux/kernel.h>
  31
  32 #include <linux/hid.h>
  33 #include <linux/hid-debug.h>
  34
  35 #include "hid-ids.h"
  36
  37 #define unk     KEY_UNKNOWN
  38
  39 static const unsigned char hid_keyboard[256] = {
  40           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  41          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  42           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  43          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  44          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  45         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  46          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  47         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  48         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  49         122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
  50         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  51         unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
  52         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  53         unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
  54          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  55         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  56 };
  57
  58 static const struct {
  59         __s32 x;
  60         __s32 y;
  61 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  62
  63 #define map_abs(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
  64 #define map_rel(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
  65 #define map_key(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
  66 #define map_led(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
  67
  68 #define map_abs_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
  69                 &max, EV_ABS, (c))
  70 #define map_key_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
  71                 &max, EV_KEY, (c))
  72
  73 static bool match_scancode(struct hid_usage *usage,
  74                            unsigned int cur_idx, unsigned int scancode)
  75 {
  76         return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
  77 }
  78
  79 static bool match_keycode(struct hid_usage *usage,
  80                           unsigned int cur_idx, unsigned int keycode)
  81 {
  82         /*
  83          * We should exclude unmapped usages when doing lookup by keycode.
  84          */
  85         return (usage->type == EV_KEY && usage->code == keycode);
  86 }
  87
  88 static bool match_index(struct hid_usage *usage,
  89                         unsigned int cur_idx, unsigned int idx)
  90 {
  91         return cur_idx == idx;
  92 }
  93
  94 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
  95                                 unsigned int cur_idx, unsigned int val);
  96
  97 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
  98                                            hid_usage_cmp_t match,
  99                                            unsigned int value,
 100                                            unsigned int *usage_idx)
 101 {
 102         unsigned int i, j, k, cur_idx = 0;
 103         struct hid_report *report;
 104         struct hid_usage *usage;
 105
 106         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
 107                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 108                         for (i = 0; i < report->maxfield; i++) {
 109                                 for (j = 0; j < report->field[i]->maxusage; j++) {
 110                                         usage = report->field[i]->usage + j;
 111                                         if (usage->type == EV_KEY || usage->type == 0) {
 112                                                 if (match(usage, cur_idx, value)) {
 113                                                         if (usage_idx)
 114                                                                 *usage_idx = cur_idx;
 115                                                         return usage;
 116                                                 }
 117                                                 cur_idx++;
 118                                         }
 119                                 }
 120                         }
 121                 }
 122         }
 123         return NULL;
 124 }
 125
 126 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
 127                                         const struct input_keymap_entry *ke,
 128                                         unsigned int *index)
 129 {
 130         struct hid_usage *usage;
 131         unsigned int scancode;
 132
 133         if (ke->flags & INPUT_KEYMAP_BY_INDEX)
 134                 usage = hidinput_find_key(hid, match_index, ke->index, index);
 135         else if (input_scancode_to_scalar(ke, &scancode) == 0)
 136                 usage = hidinput_find_key(hid, match_scancode, scancode, index);
 137         else
 138                 usage = NULL;
 139
 140         return usage;
 141 }
 142
 143 static int hidinput_getkeycode(struct input_dev *dev,
 144                                struct input_keymap_entry *ke)
 145 {
 146         struct hid_device *hid = input_get_drvdata(dev);
 147         struct hid_usage *usage;
 148         unsigned int scancode, index;
 149
 150         usage = hidinput_locate_usage(hid, ke, &index);
 151         if (usage) {
 152                 ke->keycode = usage->type == EV_KEY ?
 153                                 usage->code : KEY_RESERVED;
 154                 ke->index = index;
 155                 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
 156                 ke->len = sizeof(scancode);
 157                 memcpy(ke->scancode, &scancode, sizeof(scancode));
 158                 return 0;
 159         }
 160
 161         return -EINVAL;
 162 }
 163
 164 static int hidinput_setkeycode(struct input_dev *dev,
 165                                const struct input_keymap_entry *ke,
 166                                unsigned int *old_keycode)
 167 {
 168         struct hid_device *hid = input_get_drvdata(dev);
 169         struct hid_usage *usage;
 170
 171         usage = hidinput_locate_usage(hid, ke, NULL);
 172         if (usage) {
 173                 *old_keycode = usage->type == EV_KEY ?
 174                                 usage->code : KEY_RESERVED;
 175                 usage->code = ke->keycode;
 176
 177                 clear_bit(*old_keycode, dev->keybit);
 178                 set_bit(usage->code, dev->keybit);
 179                 dbg_hid("Assigned keycode %d to HID usage code %x\n",
 180                         usage->code, usage->hid);
 181
 182                 /*
 183                  * Set the keybit for the old keycode if the old keycode is used
 184                  * by another key
 185                  */
 186                 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
 187                         set_bit(*old_keycode, dev->keybit);
 188
 189                 return 0;
 190         }
 191
 192         return -EINVAL;
 193 }
 194
 195
 196 /**
 197  * hidinput_calc_abs_res - calculate an absolute axis resolution
 198  * @field: the HID report field to calculate resolution for
 199  * @code: axis code
 200  *
 201  * The formula is:
 202  *                         (logical_maximum - logical_minimum)
 203  * resolution = ----------------------------------------------------------
 204  *              (physical_maximum - physical_minimum) * 10 ^ unit_exponent
 205  *
 206  * as seen in the HID specification v1.11 6.2.2.7 Global Items.
 207  *
 208  * Only exponent 1 length units are processed. Centimeters and inches are
 209  * converted to millimeters. Degrees are converted to radians.
 210  */
 211 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
 212 {
 213         __s32 unit_exponent = field->unit_exponent;
 214         __s32 logical_extents = field->logical_maximum -
 215                                         field->logical_minimum;
 216         __s32 physical_extents = field->physical_maximum -
 217                                         field->physical_minimum;
 218         __s32 prev;
 219
 220         /* Check if the extents are sane */
 221         if (logical_extents <= 0 || physical_extents <= 0)
 222                 return 0;
 223
 224         /*
 225          * Verify and convert units.
 226          * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
 227          */
 228         switch (code) {
 229         case ABS_X:
 230         case ABS_Y:
 231         case ABS_Z:
 232         case ABS_MT_POSITION_X:
 233         case ABS_MT_POSITION_Y:
 234         case ABS_MT_TOOL_X:
 235         case ABS_MT_TOOL_Y:
 236         case ABS_MT_TOUCH_MAJOR:
 237         case ABS_MT_TOUCH_MINOR:
 238                 if (field->unit == 0x11) {              /* If centimeters */
 239                         /* Convert to millimeters */
 240                         unit_exponent += 1;
 241                 } else if (field->unit == 0x13) {       /* If inches */
 242                         /* Convert to millimeters */
 243                         prev = physical_extents;
 244                         physical_extents *= 254;
 245                         if (physical_extents < prev)
 246                                 return 0;
 247                         unit_exponent -= 1;
 248                 } else {
 249                         return 0;
 250                 }
 251                 break;
 252
 253         case ABS_RX:
 254         case ABS_RY:
 255         case ABS_RZ:
 256         case ABS_TILT_X:
 257         case ABS_TILT_Y:
 258                 if (field->unit == 0x14) {              /* If degrees */
 259                         /* Convert to radians */
 260                         prev = logical_extents;
 261                         logical_extents *= 573;
 262                         if (logical_extents < prev)
 263                                 return 0;
 264                         unit_exponent += 1;
 265                 } else if (field->unit != 0x12) {       /* If not radians */
 266                         return 0;
 267                 }
 268                 break;
 269
 270         default:
 271                 return 0;
 272         }
 273
 274         /* Apply negative unit exponent */
 275         for (; unit_exponent < 0; unit_exponent++) {
 276                 prev = logical_extents;
 277                 logical_extents *= 10;
 278                 if (logical_extents < prev)
 279                         return 0;
 280         }
 281         /* Apply positive unit exponent */
 282         for (; unit_exponent > 0; unit_exponent--) {
 283                 prev = physical_extents;
 284                 physical_extents *= 10;
 285                 if (physical_extents < prev)
 286                         return 0;
 287         }
 288
 289         /* Calculate resolution */
 290         return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
 291 }
 292 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
 293
 294 #ifdef CONFIG_HID_BATTERY_STRENGTH
 295 static enum power_supply_property hidinput_battery_props[] = {
 296         POWER_SUPPLY_PROP_PRESENT,
 297         POWER_SUPPLY_PROP_ONLINE,
 298         POWER_SUPPLY_PROP_CAPACITY,
 299         POWER_SUPPLY_PROP_MODEL_NAME,
 300         POWER_SUPPLY_PROP_STATUS,
 301         POWER_SUPPLY_PROP_SCOPE,
 302 };
 303
 304 #define HID_BATTERY_QUIRK_PERCENT       (1 << 0) /* always reports percent */
 305 #define HID_BATTERY_QUIRK_FEATURE       (1 << 1) /* ask for feature report */
 306
 307 static const struct hid_device_id hid_battery_quirks[] = {
 308         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
 309                         USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
 310         HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
 311         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
 312                                USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
 313           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
 314         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
 315                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
 316           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
 317         {}
 318 };
 319
 320 static unsigned find_battery_quirk(struct hid_device *hdev)
 321 {
 322         unsigned quirks = 0;
 323         const struct hid_device_id *match;
 324
 325         match = hid_match_id(hdev, hid_battery_quirks);
 326         if (match != NULL)
 327                 quirks = match->driver_data;
 328
 329         return quirks;
 330 }
 331
 332 static int hidinput_get_battery_property(struct power_supply *psy,
 333                                          enum power_supply_property prop,
 334                                          union power_supply_propval *val)
 335 {
 336         struct hid_device *dev = container_of(psy, struct hid_device, battery);
 337         int ret = 0;
 338         __u8 *buf;
 339
 340         switch (prop) {
 341         case POWER_SUPPLY_PROP_PRESENT:
 342         case POWER_SUPPLY_PROP_ONLINE:
 343                 val->intval = 1;
 344                 break;
 345
 346         case POWER_SUPPLY_PROP_CAPACITY:
 347
 348                 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
 349                 if (!buf) {
 350                         ret = -ENOMEM;
 351                         break;
 352                 }
 353                 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
 354                                          dev->battery_report_type,
 355                                          HID_REQ_GET_REPORT);
 356
 357                 if (ret != 2) {
 358                         ret = -ENODATA;
 359                         kfree(buf);
 360                         break;
 361                 }
 362                 ret = 0;
 363
 364                 if (dev->battery_min < dev->battery_max &&
 365                     buf[1] >= dev->battery_min &&
 366                     buf[1] <= dev->battery_max)
 367                         val->intval = (100 * (buf[1] - dev->battery_min)) /
 368                                 (dev->battery_max - dev->battery_min);
 369                 kfree(buf);
 370                 break;
 371
 372         case POWER_SUPPLY_PROP_MODEL_NAME:
 373                 val->strval = dev->name;
 374                 break;
 375
 376         case POWER_SUPPLY_PROP_STATUS:
 377                 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
 378                 break;
 379
 380         case POWER_SUPPLY_PROP_SCOPE:
 381                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 382                 break;
 383
 384         default:
 385                 ret = -EINVAL;
 386                 break;
 387         }
 388
 389         return ret;
 390 }
 391
 392 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
 393 {
 394         struct power_supply *battery = &dev->battery;
 395         int ret;
 396         unsigned quirks;
 397         s32 min, max;
 398
 399         if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
 400                 return false;   /* no match */
 401
 402         if (battery->name != NULL)
 403                 goto out;       /* already initialized? */
 404
 405         battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
 406         if (battery->name == NULL)
 407                 goto out;
 408
 409         battery->type = POWER_SUPPLY_TYPE_BATTERY;
 410         battery->properties = hidinput_battery_props;
 411         battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
 412         battery->use_for_apm = 0;
 413         battery->get_property = hidinput_get_battery_property;
 414
 415         quirks = find_battery_quirk(dev);
 416
 417         hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
 418                 dev->bus, dev->vendor, dev->product, dev->version, quirks);
 419
 420         min = field->logical_minimum;
 421         max = field->logical_maximum;
 422
 423         if (quirks & HID_BATTERY_QUIRK_PERCENT) {
 424                 min = 0;
 425                 max = 100;
 426         }
 427
 428         if (quirks & HID_BATTERY_QUIRK_FEATURE)
 429                 report_type = HID_FEATURE_REPORT;
 430
 431         dev->battery_min = min;
 432         dev->battery_max = max;
 433         dev->battery_report_type = report_type;
 434         dev->battery_report_id = field->report->id;
 435
 436         ret = power_supply_register(&dev->dev, battery);
 437         if (ret != 0) {
 438                 hid_warn(dev, "can't register power supply: %d\n", ret);
 439                 kfree(battery->name);
 440                 battery->name = NULL;
 441         }
 442
 443         power_supply_powers(battery, &dev->dev);
 444
 445 out:
 446         return true;
 447 }
 448
 449 static void hidinput_cleanup_battery(struct hid_device *dev)
 450 {
 451         if (!dev->battery.name)
 452                 return;
 453
 454         power_supply_unregister(&dev->battery);
 455         kfree(dev->battery.name);
 456         dev->battery.name = NULL;
 457 }
 458 #else  /* !CONFIG_HID_BATTERY_STRENGTH */
 459 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
 460                                    struct hid_field *field)
 461 {
 462         return false;
 463 }
 464
 465 static void hidinput_cleanup_battery(struct hid_device *dev)
 466 {
 467 }
 468 #endif  /* CONFIG_HID_BATTERY_STRENGTH */
 469
 470 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
 471                                      struct hid_usage *usage)
 472 {
 473         struct input_dev *input = hidinput->input;
 474         struct hid_device *device = input_get_drvdata(input);
 475         int max = 0, code;
 476         unsigned long *bit = NULL;
 477
 478         field->hidinput = hidinput;
 479
 480         if (field->flags & HID_MAIN_ITEM_CONSTANT)
 481                 goto ignore;
 482
 483         /* Ignore if report count is out of bounds. */
 484         if (field->report_count < 1)
 485                 goto ignore;
 486
 487         /* only LED usages are supported in output fields */
 488         if (field->report_type == HID_OUTPUT_REPORT &&
 489                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
 490                 goto ignore;
 491         }
 492
 493         if (device->driver->input_mapping) {
 494                 int ret = device->driver->input_mapping(device, hidinput, field,
 495                                 usage, &bit, &max);
 496                 if (ret > 0)
 497                         goto mapped;
 498                 if (ret < 0)
 499                         goto ignore;
 500         }
 501
 502         switch (usage->hid & HID_USAGE_PAGE) {
 503         case HID_UP_UNDEFINED:
 504                 goto ignore;
 505
 506         case HID_UP_KEYBOARD:
 507                 set_bit(EV_REP, input->evbit);
 508
 509                 if ((usage->hid & HID_USAGE) < 256) {
 510                         if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
 511                         map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
 512                 } else
 513                         map_key(KEY_UNKNOWN);
 514
 515                 break;
 516
 517         case HID_UP_BUTTON:
 518                 code = ((usage->hid - 1) & HID_USAGE);
 519
 520                 switch (field->application) {
 521                 case HID_GD_MOUSE:
 522                 case HID_GD_POINTER:  code += BTN_MOUSE; break;
 523                 case HID_GD_JOYSTICK:
 524                                 if (code <= 0xf)
 525                                         code += BTN_JOYSTICK;
 526                                 else
 527                                         code += BTN_TRIGGER_HAPPY - 0x10;
 528                                 break;
 529                 case HID_GD_GAMEPAD:
 530                                 if (code <= 0xf)
 531                                         code += BTN_GAMEPAD;
 532                                 else
 533                                         code += BTN_TRIGGER_HAPPY - 0x10;
 534                                 break;
 535                 default:
 536                         switch (field->physical) {
 537                         case HID_GD_MOUSE:
 538                         case HID_GD_POINTER:  code += BTN_MOUSE; break;
 539                         case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
 540                         case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
 541                         default:              code += BTN_MISC;
 542                         }
 543                 }
 544
 545                 map_key(code);
 546                 break;
 547
 548         case HID_UP_SIMULATION:
 549                 switch (usage->hid & 0xffff) {
 550                 case 0xba: map_abs(ABS_RUDDER);   break;
 551                 case 0xbb: map_abs(ABS_THROTTLE); break;
 552                 case 0xc4: map_abs(ABS_GAS);      break;
 553                 case 0xc5: map_abs(ABS_BRAKE);    break;
 554                 case 0xc8: map_abs(ABS_WHEEL);    break;
 555                 default:   goto ignore;
 556                 }
 557                 break;
 558
 559         case HID_UP_GENDESK:
 560                 if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 561                         switch (usage->hid & 0xf) {
 562                         case 0x1: map_key_clear(KEY_POWER);  break;
 563                         case 0x2: map_key_clear(KEY_SLEEP);  break;
 564                         case 0x3: map_key_clear(KEY_WAKEUP); break;
 565                         case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
 566                         case 0x5: map_key_clear(KEY_MENU); break;
 567                         case 0x6: map_key_clear(KEY_PROG1); break;
 568                         case 0x7: map_key_clear(KEY_HELP); break;
 569                         case 0x8: map_key_clear(KEY_EXIT); break;
 570                         case 0x9: map_key_clear(KEY_SELECT); break;
 571                         case 0xa: map_key_clear(KEY_RIGHT); break;
 572                         case 0xb: map_key_clear(KEY_LEFT); break;
 573                         case 0xc: map_key_clear(KEY_UP); break;
 574                         case 0xd: map_key_clear(KEY_DOWN); break;
 575                         case 0xe: map_key_clear(KEY_POWER2); break;
 576                         case 0xf: map_key_clear(KEY_RESTART); break;
 577                         default: goto unknown;
 578                         }
 579                         break;
 580                 }
 581
 582                 if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
 583                         switch (usage->hid) {
 584                         case HID_GD_UP:    usage->hat_dir = 1; break;
 585                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
 586                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
 587                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
 588                         default: goto unknown;
 589                         }
 590                         if (field->dpad) {
 591                                 map_abs(field->dpad);
 592                                 goto ignore;
 593                         }
 594                         map_abs(ABS_HAT0X);
 595                         break;
 596                 }
 597
 598                 switch (usage->hid) {
 599                 /* These usage IDs map directly to the usage codes. */
 600                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
 601                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
 602                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
 603                                 map_rel(usage->hid & 0xf);
 604                         else
 605                                 map_abs_clear(usage->hid & 0xf);
 606                         break;
 607
 608                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
 609                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
 610                                 map_rel(usage->hid & 0xf);
 611                         else
 612                                 map_abs(usage->hid & 0xf);
 613                         break;
 614
 615                 case HID_GD_HATSWITCH:
 616                         usage->hat_min = field->logical_minimum;
 617                         usage->hat_max = field->logical_maximum;
 618                         map_abs(ABS_HAT0X);
 619                         break;
 620
 621                 case HID_GD_START:      map_key_clear(BTN_START);       break;
 622                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 623
 624                 default: goto unknown;
 625                 }
 626
 627                 break;
 628
 629         case HID_UP_LED:
 630                 switch (usage->hid & 0xffff) {                /* HID-Value:                   */
 631                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
 632                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
 633                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
 634                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
 635                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
 636                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
 637                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
 638                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
 639                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
 640                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
 641                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
 642
 643                 default: goto ignore;
 644                 }
 645                 break;
 646
 647         case HID_UP_DIGITIZER:
 648                 switch (usage->hid & 0xff) {
 649                 case 0x00: /* Undefined */
 650                         goto ignore;
 651
 652                 case 0x30: /* TipPressure */
 653                         if (!test_bit(BTN_TOUCH, input->keybit)) {
 654                                 device->quirks |= HID_QUIRK_NOTOUCH;
 655                                 set_bit(EV_KEY, input->evbit);
 656                                 set_bit(BTN_TOUCH, input->keybit);
 657                         }
 658                         map_abs_clear(ABS_PRESSURE);
 659                         break;
 660
 661                 case 0x32: /* InRange */
 662                         switch (field->physical & 0xff) {
 663                         case 0x21: map_key(BTN_TOOL_MOUSE); break;
 664                         case 0x22: map_key(BTN_TOOL_FINGER); break;
 665                         default: map_key(BTN_TOOL_PEN); break;
 666                         }
 667                         break;
 668
 669                 case 0x3c: /* Invert */
 670                         map_key_clear(BTN_TOOL_RUBBER);
 671                         break;
 672
 673                 case 0x3d: /* X Tilt */
 674                         map_abs_clear(ABS_TILT_X);
 675                         break;
 676
 677                 case 0x3e: /* Y Tilt */
 678                         map_abs_clear(ABS_TILT_Y);
 679                         break;
 680
 681                 case 0x33: /* Touch */
 682                 case 0x42: /* TipSwitch */
 683                 case 0x43: /* TipSwitch2 */
 684                         device->quirks &= ~HID_QUIRK_NOTOUCH;
 685                         map_key_clear(BTN_TOUCH);
 686                         break;
 687
 688                 case 0x44: /* BarrelSwitch */
 689                         map_key_clear(BTN_STYLUS);
 690                         break;
 691
 692                 case 0x46: /* TabletPick */
 693                 case 0x5a: /* SecondaryBarrelSwitch */
 694                         map_key_clear(BTN_STYLUS2);
 695                         break;
 696
 697                 case 0x5b: /* TransducerSerialNumber */
 698                         set_bit(MSC_SERIAL, input->mscbit);
 699                         break;
 700
 701                 default:  goto unknown;
 702                 }
 703                 break;
 704
 705         case HID_UP_CONSUMER:   /* USB HUT v1.12, pages 75-84 */
 706                 switch (usage->hid & HID_USAGE) {
 707                 case 0x000: goto ignore;
 708                 case 0x030: map_key_clear(KEY_POWER);           break;
 709                 case 0x031: map_key_clear(KEY_RESTART);         break;
 710                 case 0x032: map_key_clear(KEY_SLEEP);           break;
 711                 case 0x034: map_key_clear(KEY_SLEEP);           break;
 712                 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);  break;
 713                 case 0x036: map_key_clear(BTN_MISC);            break;
 714
 715                 case 0x040: map_key_clear(KEY_MENU);            break; /* Menu */
 716                 case 0x041: map_key_clear(KEY_SELECT);          break; /* Menu Pick */
 717                 case 0x042: map_key_clear(KEY_UP);              break; /* Menu Up */
 718                 case 0x043: map_key_clear(KEY_DOWN);            break; /* Menu Down */
 719                 case 0x044: map_key_clear(KEY_LEFT);            break; /* Menu Left */
 720                 case 0x045: map_key_clear(KEY_RIGHT);           break; /* Menu Right */
 721                 case 0x046: map_key_clear(KEY_ESC);             break; /* Menu Escape */
 722                 case 0x047: map_key_clear(KEY_KPPLUS);          break; /* Menu Value Increase */
 723                 case 0x048: map_key_clear(KEY_KPMINUS);         break; /* Menu Value Decrease */
 724
 725                 case 0x060: map_key_clear(KEY_INFO);            break; /* Data On Screen */
 726                 case 0x061: map_key_clear(KEY_SUBTITLE);        break; /* Closed Caption */
 727                 case 0x063: map_key_clear(KEY_VCR);             break; /* VCR/TV */
 728                 case 0x065: map_key_clear(KEY_CAMERA);          break; /* Snapshot */
 729                 case 0x069: map_key_clear(KEY_RED);             break;
 730                 case 0x06a: map_key_clear(KEY_GREEN);           break;
 731                 case 0x06b: map_key_clear(KEY_BLUE);            break;
 732                 case 0x06c: map_key_clear(KEY_YELLOW);          break;
 733                 case 0x06d: map_key_clear(KEY_ZOOM);            break;
 734
 735                 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP);            break;
 736                 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN);          break;
 737                 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE);       break;
 738                 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN);          break;
 739                 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX);          break;
 740                 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO);         break;
 741
 742                 case 0x082: map_key_clear(KEY_VIDEO_NEXT);      break;
 743                 case 0x083: map_key_clear(KEY_LAST);            break;
 744                 case 0x084: map_key_clear(KEY_ENTER);           break;
 745                 case 0x088: map_key_clear(KEY_PC);              break;
 746                 case 0x089: map_key_clear(KEY_TV);              break;
 747                 case 0x08a: map_key_clear(KEY_WWW);             break;
 748                 case 0x08b: map_key_clear(KEY_DVD);             break;
 749                 case 0x08c: map_key_clear(KEY_PHONE);           break;
 750                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
 751                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
 752                 case 0x08f: map_key_clear(KEY_GAMES);           break;
 753                 case 0x090: map_key_clear(KEY_MEMO);            break;
 754                 case 0x091: map_key_clear(KEY_CD);              break;
 755                 case 0x092: map_key_clear(KEY_VCR);             break;
 756                 case 0x093: map_key_clear(KEY_TUNER);           break;
 757                 case 0x094: map_key_clear(KEY_EXIT);            break;
 758                 case 0x095: map_key_clear(KEY_HELP);            break;
 759                 case 0x096: map_key_clear(KEY_TAPE);            break;
 760                 case 0x097: map_key_clear(KEY_TV2);             break;
 761                 case 0x098: map_key_clear(KEY_SAT);             break;
 762                 case 0x09a: map_key_clear(KEY_PVR);             break;
 763
 764                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
 765                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
 766                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
 767
 768                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
 769                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
 770                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
 771                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
 772                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
 773                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
 774                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
 775                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
 776                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
 777                 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
 778                 case 0x0b9: map_key_clear(KEY_SHUFFLE);         break;
 779                 case 0x0bf: map_key_clear(KEY_SLOW);            break;
 780
 781                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
 782                 case 0x0cf: map_key_clear(KEY_VOICECOMMAND);    break;
 783                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
 784                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
 785                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
 786                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
 787                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
 788                 case 0x0f5: map_key_clear(KEY_SLOW);            break;
 789
 790                 case 0x181: map_key_clear(KEY_BUTTONCONFIG);    break;
 791                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
 792                 case 0x183: map_key_clear(KEY_CONFIG);          break;
 793                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
 794                 case 0x185: map_key_clear(KEY_EDITOR);          break;
 795                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
 796                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
 797                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
 798                 case 0x189: map_key_clear(KEY_DATABASE);        break;
 799                 case 0x18a: map_key_clear(KEY_MAIL);            break;
 800                 case 0x18b: map_key_clear(KEY_NEWS);            break;
 801                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
 802                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
 803                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
 804                 case 0x18f: map_key_clear(KEY_TASKMANAGER);     break;
 805                 case 0x190: map_key_clear(KEY_JOURNAL);         break;
 806                 case 0x191: map_key_clear(KEY_FINANCE);         break;
 807                 case 0x192: map_key_clear(KEY_CALC);            break;
 808                 case 0x193: map_key_clear(KEY_PLAYER);          break;
 809                 case 0x194: map_key_clear(KEY_FILE);            break;
 810                 case 0x196: map_key_clear(KEY_WWW);             break;
 811                 case 0x199: map_key_clear(KEY_CHAT);            break;
 812                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
 813                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
 814                 case 0x19f: map_key_clear(KEY_CONTROLPANEL);            break;
 815                 case 0x1a2: map_key_clear(KEY_APPSELECT);               break;
 816                 case 0x1a3: map_key_clear(KEY_NEXT);            break;
 817                 case 0x1a4: map_key_clear(KEY_PREVIOUS);        break;
 818                 case 0x1a6: map_key_clear(KEY_HELP);            break;
 819                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
 820                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
 821                 case 0x1ae: map_key_clear(KEY_KEYBOARD);        break;
 822                 case 0x1b1: map_key_clear(KEY_SCREENSAVER);             break;
 823                 case 0x1b4: map_key_clear(KEY_FILE);            break;
 824                 case 0x1b6: map_key_clear(KEY_IMAGES);          break;
 825                 case 0x1b7: map_key_clear(KEY_AUDIO);           break;
 826                 case 0x1b8: map_key_clear(KEY_VIDEO);           break;
 827                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
 828                 case 0x1bd: map_key_clear(KEY_INFO);            break;
 829                 case 0x201: map_key_clear(KEY_NEW);             break;
 830                 case 0x202: map_key_clear(KEY_OPEN);            break;
 831                 case 0x203: map_key_clear(KEY_CLOSE);           break;
 832                 case 0x204: map_key_clear(KEY_EXIT);            break;
 833                 case 0x207: map_key_clear(KEY_SAVE);            break;
 834                 case 0x208: map_key_clear(KEY_PRINT);           break;
 835                 case 0x209: map_key_clear(KEY_PROPS);           break;
 836                 case 0x21a: map_key_clear(KEY_UNDO);            break;
 837                 case 0x21b: map_key_clear(KEY_COPY);            break;
 838                 case 0x21c: map_key_clear(KEY_CUT);             break;
 839                 case 0x21d: map_key_clear(KEY_PASTE);           break;
 840                 case 0x21f: map_key_clear(KEY_FIND);            break;
 841                 case 0x221: map_key_clear(KEY_SEARCH);          break;
 842                 case 0x222: map_key_clear(KEY_GOTO);            break;
 843                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
 844                 case 0x224: map_key_clear(KEY_BACK);            break;
 845                 case 0x225: map_key_clear(KEY_FORWARD);         break;
 846                 case 0x226: map_key_clear(KEY_STOP);            break;
 847                 case 0x227: map_key_clear(KEY_REFRESH);         break;
 848                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
 849                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
 850                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
 851                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
 852                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
 853                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
 854                 case 0x238: map_rel(REL_HWHEEL);                break;
 855                 case 0x23d: map_key_clear(KEY_EDIT);            break;
 856                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
 857                 case 0x269: map_key_clear(KEY_INSERT);          break;
 858                 case 0x26a: map_key_clear(KEY_DELETE);          break;
 859                 case 0x279: map_key_clear(KEY_REDO);            break;
 860
 861                 case 0x289: map_key_clear(KEY_REPLY);           break;
 862                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
 863                 case 0x28c: map_key_clear(KEY_SEND);            break;
 864
 865                 default: map_key_clear(KEY_UNKNOWN);
 866                 }
 867                 break;
 868
 869         case HID_UP_GENDEVCTRLS:
 870                 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
 871                         goto ignore;
 872                 else
 873                         goto unknown;
 874                 break;
 875
 876         case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 877                 set_bit(EV_REP, input->evbit);
 878                 switch (usage->hid & HID_USAGE) {
 879                 case 0x021: map_key_clear(KEY_PRINT);           break;
 880                 case 0x070: map_key_clear(KEY_HP);              break;
 881                 case 0x071: map_key_clear(KEY_CAMERA);          break;
 882                 case 0x072: map_key_clear(KEY_SOUND);           break;
 883                 case 0x073: map_key_clear(KEY_QUESTION);        break;
 884                 case 0x080: map_key_clear(KEY_EMAIL);           break;
 885                 case 0x081: map_key_clear(KEY_CHAT);            break;
 886                 case 0x082: map_key_clear(KEY_SEARCH);          break;
 887                 case 0x083: map_key_clear(KEY_CONNECT);         break;
 888                 case 0x084: map_key_clear(KEY_FINANCE);         break;
 889                 case 0x085: map_key_clear(KEY_SPORT);           break;
 890                 case 0x086: map_key_clear(KEY_SHOP);            break;
 891                 default:    goto ignore;
 892                 }
 893                 break;
 894
 895         case HID_UP_HPVENDOR2:
 896                 set_bit(EV_REP, input->evbit);
 897                 switch (usage->hid & HID_USAGE) {
 898                 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN);  break;
 899                 case 0x004: map_key_clear(KEY_BRIGHTNESSUP);    break;
 900                 default:    goto ignore;
 901                 }
 902                 break;
 903
 904         case HID_UP_MSVENDOR:
 905                 goto ignore;
 906
 907         case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
 908                 set_bit(EV_REP, input->evbit);
 909                 goto ignore;
 910
 911         case HID_UP_LOGIVENDOR:
 912                 goto ignore;
 913
 914         case HID_UP_PID:
 915                 switch (usage->hid & HID_USAGE) {
 916                 case 0xa4: map_key_clear(BTN_DEAD);     break;
 917                 default: goto ignore;
 918                 }
 919                 break;
 920
 921         default:
 922         unknown:
 923                 if (field->report_size == 1) {
 924                         if (field->report->type == HID_OUTPUT_REPORT) {
 925                                 map_led(LED_MISC);
 926                                 break;
 927                         }
 928                         map_key(BTN_MISC);
 929                         break;
 930                 }
 931                 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 932                         map_rel(REL_MISC);
 933                         break;
 934                 }
 935                 map_abs(ABS_MISC);
 936                 break;
 937         }
 938
 939 mapped:
 940         if (device->driver->input_mapped && device->driver->input_mapped(device,
 941                                 hidinput, field, usage, &bit, &max) < 0)
 942                 goto ignore;
 943
 944         set_bit(usage->type, input->evbit);
 945
 946         while (usage->code <= max && test_and_set_bit(usage->code, bit))
 947                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 948
 949         if (usage->code > max)
 950                 goto ignore;
 951
 952
 953         if (usage->type == EV_ABS) {
 954
 955                 int a = field->logical_minimum;
 956                 int b = field->logical_maximum;
 957
 958                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 959                         a = field->logical_minimum = 0;
 960                         b = field->logical_maximum = 255;
 961                 }
 962
 963                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
 964                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 965                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
 966
 967                 input_abs_set_res(input, usage->code,
 968                                   hidinput_calc_abs_res(field, usage->code));
 969
 970                 /* use a larger default input buffer for MT devices */
 971                 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
 972                         input_set_events_per_packet(input, 60);
 973         }
 974
 975         if (usage->type == EV_ABS &&
 976             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
 977                 int i;
 978                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 979                         input_set_abs_params(input, i, -1, 1, 0, 0);
 980                         set_bit(i, input->absbit);
 981                 }
 982                 if (usage->hat_dir && !field->dpad)
 983                         field->dpad = usage->code;
 984         }
 985
 986         /* for those devices which produce Consumer volume usage as relative,
 987          * we emulate pressing volumeup/volumedown appropriate number of times
 988          * in hidinput_hid_event()
 989          */
 990         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 991                         (usage->code == ABS_VOLUME)) {
 992                 set_bit(KEY_VOLUMEUP, input->keybit);
 993                 set_bit(KEY_VOLUMEDOWN, input->keybit);
 994         }
 995
 996         if (usage->type == EV_KEY) {
 997                 set_bit(EV_MSC, input->evbit);
 998                 set_bit(MSC_SCAN, input->mscbit);
 999         }
1000
1001 ignore:
1002         return;
1003
1004 }
1005
1006 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1007 {
1008         struct input_dev *input;
1009         unsigned *quirks = &hid->quirks;
1010
1011         if (!field->hidinput)
1012                 return;
1013
1014         input = field->hidinput->input;
1015
1016         if (!usage->type)
1017                 return;
1018
1019         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1020                 int hat_dir = usage->hat_dir;
1021                 if (!hat_dir)
1022                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1023                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1024                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
1025                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1026                 return;
1027         }
1028
1029         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1030                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1031                 return;
1032         }
1033
1034         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1035                 if (value) {
1036                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1037                         return;
1038                 }
1039                 input_event(input, usage->type, usage->code, 0);
1040                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1041                 return;
1042         }
1043
1044         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1045                 int a = field->logical_minimum;
1046                 int b = field->logical_maximum;
1047                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1048         }
1049
1050         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1051                 dbg_hid("Maximum Effects - %d\n",value);
1052                 return;
1053         }
1054
1055         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1056                 dbg_hid("PID Pool Report\n");
1057                 return;
1058         }
1059
1060         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1061                 return;
1062
1063         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1064                         (usage->code == ABS_VOLUME)) {
1065                 int count = abs(value);
1066                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1067                 int i;
1068
1069                 for (i = 0; i < count; i++) {
1070                         input_event(input, EV_KEY, direction, 1);
1071                         input_sync(input);
1072                         input_event(input, EV_KEY, direction, 0);
1073                         input_sync(input);
1074                 }
1075                 return;
1076         }
1077
1078         /*
1079          * Ignore out-of-range values as per HID specification,
1080          * section 5.10 and 6.2.25.
1081          *
1082          * The logical_minimum < logical_maximum check is done so that we
1083          * don't unintentionally discard values sent by devices which
1084          * don't specify logical min and max.
1085          */
1086         if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1087             (field->logical_minimum < field->logical_maximum) &&
1088             (value < field->logical_minimum ||
1089              value > field->logical_maximum)) {
1090                 dbg_hid("Ignoring out-of-range value %x\n", value);
1091                 return;
1092         }
1093
1094         /* report the usage code as scancode if the key status has changed */
1095         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1096                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1097
1098         input_event(input, usage->type, usage->code, value);
1099
1100         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1101                 input_event(input, usage->type, usage->code, 0);
1102 }
1103
1104 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1105 {
1106         struct hid_input *hidinput;
1107
1108         if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1109                 return;
1110
1111         list_for_each_entry(hidinput, &hid->inputs, list)
1112                 input_sync(hidinput->input);
1113 }
1114 EXPORT_SYMBOL_GPL(hidinput_report_event);
1115
1116 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1117 {
1118         struct hid_report *report;
1119         int i, j;
1120
1121         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1122                 for (i = 0; i < report->maxfield; i++) {
1123                         *field = report->field[i];
1124                         for (j = 0; j < (*field)->maxusage; j++)
1125                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1126                                         return j;
1127                 }
1128         }
1129         return -1;
1130 }
1131 EXPORT_SYMBOL_GPL(hidinput_find_field);
1132
1133 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1134 {
1135         struct hid_report *report;
1136         struct hid_field *field;
1137         int i, j;
1138
1139         list_for_each_entry(report,
1140                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1141                             list) {
1142                 for (i = 0; i < report->maxfield; i++) {
1143                         field = report->field[i];
1144                         for (j = 0; j < field->maxusage; j++)
1145                                 if (field->usage[j].type == EV_LED)
1146                                         return field;
1147                 }
1148         }
1149         return NULL;
1150 }
1151 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1152
1153 unsigned int hidinput_count_leds(struct hid_device *hid)
1154 {
1155         struct hid_report *report;
1156         struct hid_field *field;
1157         int i, j;
1158         unsigned int count = 0;
1159
1160         list_for_each_entry(report,
1161                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1162                             list) {
1163                 for (i = 0; i < report->maxfield; i++) {
1164                         field = report->field[i];
1165                         for (j = 0; j < field->maxusage; j++)
1166                                 if (field->usage[j].type == EV_LED &&
1167                                     field->value[j])
1168                                         count += 1;
1169                 }
1170         }
1171         return count;
1172 }
1173 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1174
1175 static void hidinput_led_worker(struct work_struct *work)
1176 {
1177         struct hid_device *hid = container_of(work, struct hid_device,
1178                                               led_work);
1179         struct hid_field *field;
1180         struct hid_report *report;
1181         int len, ret;
1182         __u8 *buf;
1183
1184         field = hidinput_get_led_field(hid);
1185         if (!field)
1186                 return;
1187
1188         /*
1189          * field->report is accessed unlocked regarding HID core. So there might
1190          * be another incoming SET-LED request from user-space, which changes
1191          * the LED state while we assemble our outgoing buffer. However, this
1192          * doesn't matter as hid_output_report() correctly converts it into a
1193          * boolean value no matter what information is currently set on the LED
1194          * field (even garbage). So the remote device will always get a valid
1195          * request.
1196          * And in case we send a wrong value, a next led worker is spawned
1197          * for every SET-LED request so the following worker will send the
1198          * correct value, guaranteed!
1199          */
1200
1201         report = field->report;
1202
1203         /* use custom SET_REPORT request if possible (asynchronous) */
1204         if (hid->ll_driver->request)
1205                 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1206
1207         /* fall back to generic raw-output-report */
1208         len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1209         buf = hid_alloc_report_buf(report, GFP_KERNEL);
1210         if (!buf)
1211                 return;
1212
1213         hid_output_report(report, buf);
1214         /* synchronous output report */
1215         ret = hid_hw_output_report(hid, buf, len);
1216         if (ret == -ENOSYS)
1217                 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1218                                 HID_REQ_SET_REPORT);
1219         kfree(buf);
1220 }
1221
1222 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1223                                 unsigned int code, int value)
1224 {
1225         struct hid_device *hid = input_get_drvdata(dev);
1226         struct hid_field *field;
1227         int offset;
1228
1229         if (type == EV_FF)
1230                 return input_ff_event(dev, type, code, value);
1231
1232         if (type != EV_LED)
1233                 return -1;
1234
1235         if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1236                 hid_warn(dev, "event field not found\n");
1237                 return -1;
1238         }
1239
1240         hid_set_field(field, offset, value);
1241
1242         schedule_work(&hid->led_work);
1243         return 0;
1244 }
1245
1246 static int hidinput_open(struct input_dev *dev)
1247 {
1248         struct hid_device *hid = input_get_drvdata(dev);
1249
1250         return hid_hw_open(hid);
1251 }
1252
1253 static void hidinput_close(struct input_dev *dev)
1254 {
1255         struct hid_device *hid = input_get_drvdata(dev);
1256
1257         hid_hw_close(hid);
1258 }
1259
1260 static void report_features(struct hid_device *hid)
1261 {
1262         struct hid_driver *drv = hid->driver;
1263         struct hid_report_enum *rep_enum;
1264         struct hid_report *rep;
1265         int i, j;
1266
1267         rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1268         list_for_each_entry(rep, &rep_enum->report_list, list)
1269                 for (i = 0; i < rep->maxfield; i++) {
1270                         /* Ignore if report count is out of bounds. */
1271                         if (rep->field[i]->report_count < 1)
1272                                 continue;
1273
1274                         for (j = 0; j < rep->field[i]->maxusage; j++) {
1275                                 /* Verify if Battery Strength feature is available */
1276                                 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1277
1278                                 if (drv->feature_mapping)
1279                                         drv->feature_mapping(hid, rep->field[i],
1280                                                              rep->field[i]->usage + j);
1281                         }
1282                 }
1283 }
1284
1285 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1286 {
1287         struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1288         struct input_dev *input_dev = input_allocate_device();
1289         if (!hidinput || !input_dev) {
1290                 kfree(hidinput);
1291                 input_free_device(input_dev);
1292                 hid_err(hid, "Out of memory during hid input probe\n");
1293                 return NULL;
1294         }
1295
1296         input_set_drvdata(input_dev, hid);
1297         input_dev->event = hidinput_input_event;
1298         input_dev->open = hidinput_open;
1299         input_dev->close = hidinput_close;
1300         input_dev->setkeycode = hidinput_setkeycode;
1301         input_dev->getkeycode = hidinput_getkeycode;
1302
1303         input_dev->name = hid->name;
1304         input_dev->phys = hid->phys;
1305         input_dev->uniq = hid->uniq;
1306         input_dev->id.bustype = hid->bus;
1307         input_dev->id.vendor  = hid->vendor;
1308         input_dev->id.product = hid->product;
1309         input_dev->id.version = hid->version;
1310         input_dev->dev.parent = &hid->dev;
1311         hidinput->input = input_dev;
1312         list_add_tail(&hidinput->list, &hid->inputs);
1313
1314         return hidinput;
1315 }
1316
1317 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1318 {
1319         int i;
1320         unsigned long r = 0;
1321
1322         for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1323                 r |= hidinput->input->evbit[i];
1324
1325         for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1326                 r |= hidinput->input->keybit[i];
1327
1328         for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1329                 r |= hidinput->input->relbit[i];
1330
1331         for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1332                 r |= hidinput->input->absbit[i];
1333
1334         for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1335                 r |= hidinput->input->mscbit[i];
1336
1337         for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1338                 r |= hidinput->input->ledbit[i];
1339
1340         for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1341                 r |= hidinput->input->sndbit[i];
1342
1343         for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1344                 r |= hidinput->input->ffbit[i];
1345
1346         for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1347                 r |= hidinput->input->swbit[i];
1348
1349         return !!r;
1350 }
1351
1352 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1353                 struct hid_input *hidinput)
1354 {
1355         struct hid_report *report;
1356         int i, k;
1357
1358         list_del(&hidinput->list);
1359         input_free_device(hidinput->input);
1360
1361         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1362                 if (k == HID_OUTPUT_REPORT &&
1363                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1364                         continue;
1365
1366                 list_for_each_entry(report, &hid->report_enum[k].report_list,
1367                                     list) {
1368
1369                         for (i = 0; i < report->maxfield; i++)
1370                                 if (report->field[i]->hidinput == hidinput)
1371                                         report->field[i]->hidinput = NULL;
1372                 }
1373         }
1374
1375         kfree(hidinput);
1376 }
1377
1378 /*
1379  * Register the input device; print a message.
1380  * Configure the input layer interface
1381  * Read all reports and initialize the absolute field values.
1382  */
1383
1384 int hidinput_connect(struct hid_device *hid, unsigned int force)
1385 {
1386         struct hid_driver *drv = hid->driver;
1387         struct hid_report *report;
1388         struct hid_input *hidinput = NULL;
1389         int i, j, k;
1390
1391         INIT_LIST_HEAD(&hid->inputs);
1392         INIT_WORK(&hid->led_work, hidinput_led_worker);
1393
1394         if (!force) {
1395                 for (i = 0; i < hid->maxcollection; i++) {
1396                         struct hid_collection *col = &hid->collection[i];
1397                         if (col->type == HID_COLLECTION_APPLICATION ||
1398                                         col->type == HID_COLLECTION_PHYSICAL)
1399                                 if (IS_INPUT_APPLICATION(col->usage))
1400                                         break;
1401                 }
1402
1403                 if (i == hid->maxcollection)
1404                         return -1;
1405         }
1406
1407         report_features(hid);
1408
1409         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1410                 if (k == HID_OUTPUT_REPORT &&
1411                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1412                         continue;
1413
1414                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1415
1416                         if (!report->maxfield)
1417                                 continue;
1418
1419                         if (!hidinput) {
1420                                 hidinput = hidinput_allocate(hid);
1421                                 if (!hidinput)
1422                                         goto out_unwind;
1423                         }
1424
1425                         for (i = 0; i < report->maxfield; i++)
1426                                 for (j = 0; j < report->field[i]->maxusage; j++)
1427                                         hidinput_configure_usage(hidinput, report->field[i],
1428                                                                  report->field[i]->usage + j);
1429
1430                         if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1431                             !hidinput_has_been_populated(hidinput))
1432                                 continue;
1433
1434                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1435                                 /* This will leave hidinput NULL, so that it
1436                                  * allocates another one if we have more inputs on
1437                                  * the same interface. Some devices (e.g. Happ's
1438                                  * UGCI) cram a lot of unrelated inputs into the
1439                                  * same interface. */
1440                                 hidinput->report = report;
1441                                 if (drv->input_configured)
1442                                         drv->input_configured(hid, hidinput);
1443                                 if (input_register_device(hidinput->input))
1444                                         goto out_cleanup;
1445                                 hidinput = NULL;
1446                         }
1447                 }
1448         }
1449
1450         if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1451             !hidinput_has_been_populated(hidinput)) {
1452                 /* no need to register an input device not populated */
1453                 hidinput_cleanup_hidinput(hid, hidinput);
1454                 hidinput = NULL;
1455         }
1456
1457         if (list_empty(&hid->inputs)) {
1458                 hid_err(hid, "No inputs registered, leaving\n");
1459                 goto out_unwind;
1460         }
1461
1462         if (hidinput) {
1463                 if (drv->input_configured)
1464                         drv->input_configured(hid, hidinput);
1465                 if (input_register_device(hidinput->input))
1466                         goto out_cleanup;
1467         }
1468
1469         return 0;
1470
1471 out_cleanup:
1472         list_del(&hidinput->list);
1473         input_free_device(hidinput->input);
1474         kfree(hidinput);
1475 out_unwind:
1476         /* unwind the ones we already registered */
1477         hidinput_disconnect(hid);
1478
1479         return -1;
1480 }
1481 EXPORT_SYMBOL_GPL(hidinput_connect);
1482
1483 void hidinput_disconnect(struct hid_device *hid)
1484 {
1485         struct hid_input *hidinput, *next;
1486
1487         hidinput_cleanup_battery(hid);
1488
1489         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1490                 list_del(&hidinput->list);
1491                 input_unregister_device(hidinput->input);
1492                 kfree(hidinput);
1493         }
1494
1495         /* led_work is spawned by input_dev callbacks, but doesn't access the
1496          * parent input_dev at all. Once all input devices are removed, we
1497          * know that led_work will never get restarted, so we can cancel it
1498          * synchronously and are safe. */
1499         cancel_work_sync(&hid->led_work);
1500 }
1501 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1502