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 #define unk     KEY_UNKNOWN
  36
  37 static const unsigned char hid_keyboard[256] = {
  38           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  39          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  40           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  41          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  42          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  43         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  44          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  45         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  46         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  47         122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
  48         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  49         unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,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,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
  52          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  53         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  54 };
  55
  56 static const struct {
  57         __s32 x;
  58         __s32 y;
  59 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  60
  61 #define map_abs(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
  62 #define map_rel(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
  63 #define map_key(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
  64 #define map_led(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
  65
  66 #define map_abs_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
  67                 &max, EV_ABS, (c))
  68 #define map_key_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
  69                 &max, EV_KEY, (c))
  70
  71 static bool match_scancode(struct hid_usage *usage,
  72                            unsigned int cur_idx, unsigned int scancode)
  73 {
  74         return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
  75 }
  76
  77 static bool match_keycode(struct hid_usage *usage,
  78                           unsigned int cur_idx, unsigned int keycode)
  79 {
  80         /*
  81          * We should exclude unmapped usages when doing lookup by keycode.
  82          */
  83         return (usage->type == EV_KEY && usage->code == keycode);
  84 }
  85
  86 static bool match_index(struct hid_usage *usage,
  87                         unsigned int cur_idx, unsigned int idx)
  88 {
  89         return cur_idx == idx;
  90 }
  91
  92 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
  93                                 unsigned int cur_idx, unsigned int val);
  94
  95 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
  96                                            hid_usage_cmp_t match,
  97                                            unsigned int value,
  98                                            unsigned int *usage_idx)
  99 {
 100         unsigned int i, j, k, cur_idx = 0;
 101         struct hid_report *report;
 102         struct hid_usage *usage;
 103
 104         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
 105                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 106                         for (i = 0; i < report->maxfield; i++) {
 107                                 for (j = 0; j < report->field[i]->maxusage; j++) {
 108                                         usage = report->field[i]->usage + j;
 109                                         if (usage->type == EV_KEY || usage->type == 0) {
 110                                                 if (match(usage, cur_idx, value)) {
 111                                                         if (usage_idx)
 112                                                                 *usage_idx = cur_idx;
 113                                                         return usage;
 114                                                 }
 115                                                 cur_idx++;
 116                                         }
 117                                 }
 118                         }
 119                 }
 120         }
 121         return NULL;
 122 }
 123
 124 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
 125                                         const struct input_keymap_entry *ke,
 126                                         unsigned int *index)
 127 {
 128         struct hid_usage *usage;
 129         unsigned int scancode;
 130
 131         if (ke->flags & INPUT_KEYMAP_BY_INDEX)
 132                 usage = hidinput_find_key(hid, match_index, ke->index, index);
 133         else if (input_scancode_to_scalar(ke, &scancode) == 0)
 134                 usage = hidinput_find_key(hid, match_scancode, scancode, index);
 135         else
 136                 usage = NULL;
 137
 138         return usage;
 139 }
 140
 141 static int hidinput_getkeycode(struct input_dev *dev,
 142                                struct input_keymap_entry *ke)
 143 {
 144         struct hid_device *hid = input_get_drvdata(dev);
 145         struct hid_usage *usage;
 146         unsigned int scancode, index;
 147
 148         usage = hidinput_locate_usage(hid, ke, &index);
 149         if (usage) {
 150                 ke->keycode = usage->type == EV_KEY ?
 151                                 usage->code : KEY_RESERVED;
 152                 ke->index = index;
 153                 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
 154                 ke->len = sizeof(scancode);
 155                 memcpy(ke->scancode, &scancode, sizeof(scancode));
 156                 return 0;
 157         }
 158
 159         return -EINVAL;
 160 }
 161
 162 static int hidinput_setkeycode(struct input_dev *dev,
 163                                const struct input_keymap_entry *ke,
 164                                unsigned int *old_keycode)
 165 {
 166         struct hid_device *hid = input_get_drvdata(dev);
 167         struct hid_usage *usage;
 168
 169         usage = hidinput_locate_usage(hid, ke, NULL);
 170         if (usage) {
 171                 *old_keycode = usage->type == EV_KEY ?
 172                                 usage->code : KEY_RESERVED;
 173                 usage->code = ke->keycode;
 174
 175                 clear_bit(*old_keycode, dev->keybit);
 176                 set_bit(usage->code, dev->keybit);
 177                 dbg_hid("Assigned keycode %d to HID usage code %x\n",
 178                         usage->code, usage->hid);
 179
 180                 /*
 181                  * Set the keybit for the old keycode if the old keycode is used
 182                  * by another key
 183                  */
 184                 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
 185                         set_bit(*old_keycode, dev->keybit);
 186
 187                 return 0;
 188         }
 189
 190         return -EINVAL;
 191 }
 192
 193
 194 /**
 195  * hidinput_calc_abs_res - calculate an absolute axis resolution
 196  * @field: the HID report field to calculate resolution for
 197  * @code: axis code
 198  *
 199  * The formula is:
 200  *                         (logical_maximum - logical_minimum)
 201  * resolution = ----------------------------------------------------------
 202  *              (physical_maximum - physical_minimum) * 10 ^ unit_exponent
 203  *
 204  * as seen in the HID specification v1.11 6.2.2.7 Global Items.
 205  *
 206  * Only exponent 1 length units are processed. Centimeters and inches are
 207  * converted to millimeters. Degrees are converted to radians.
 208  */
 209 static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
 210 {
 211         __s32 unit_exponent = field->unit_exponent;
 212         __s32 logical_extents = field->logical_maximum -
 213                                         field->logical_minimum;
 214         __s32 physical_extents = field->physical_maximum -
 215                                         field->physical_minimum;
 216         __s32 prev;
 217
 218         /* Check if the extents are sane */
 219         if (logical_extents <= 0 || physical_extents <= 0)
 220                 return 0;
 221
 222         /*
 223          * Verify and convert units.
 224          * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
 225          */
 226         if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
 227                 if (field->unit == 0x11) {              /* If centimeters */
 228                         /* Convert to millimeters */
 229                         unit_exponent += 1;
 230                 } else if (field->unit == 0x13) {       /* If inches */
 231                         /* Convert to millimeters */
 232                         prev = physical_extents;
 233                         physical_extents *= 254;
 234                         if (physical_extents < prev)
 235                                 return 0;
 236                         unit_exponent -= 1;
 237                 } else {
 238                         return 0;
 239                 }
 240         } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
 241                 if (field->unit == 0x14) {              /* If degrees */
 242                         /* Convert to radians */
 243                         prev = logical_extents;
 244                         logical_extents *= 573;
 245                         if (logical_extents < prev)
 246                                 return 0;
 247                         unit_exponent += 1;
 248                 } else if (field->unit != 0x12) {       /* If not radians */
 249                         return 0;
 250                 }
 251         } else {
 252                 return 0;
 253         }
 254
 255         /* Apply negative unit exponent */
 256         for (; unit_exponent < 0; unit_exponent++) {
 257                 prev = logical_extents;
 258                 logical_extents *= 10;
 259                 if (logical_extents < prev)
 260                         return 0;
 261         }
 262         /* Apply positive unit exponent */
 263         for (; unit_exponent > 0; unit_exponent--) {
 264                 prev = physical_extents;
 265                 physical_extents *= 10;
 266                 if (physical_extents < prev)
 267                         return 0;
 268         }
 269
 270         /* Calculate resolution */
 271         return logical_extents / physical_extents;
 272 }
 273
 274 #ifdef CONFIG_HID_BATTERY_STRENGTH
 275 static enum power_supply_property hidinput_battery_props[] = {
 276         POWER_SUPPLY_PROP_PRESENT,
 277         POWER_SUPPLY_PROP_ONLINE,
 278         POWER_SUPPLY_PROP_CAPACITY,
 279         POWER_SUPPLY_PROP_MODEL_NAME,
 280 };
 281
 282 static int hidinput_get_battery_property(struct power_supply *psy,
 283                                          enum power_supply_property prop,
 284                                          union power_supply_propval *val)
 285 {
 286         struct hid_device *dev = container_of(psy, struct hid_device, battery);
 287         int ret = 0;
 288
 289         switch (prop) {
 290         case POWER_SUPPLY_PROP_PRESENT:
 291         case POWER_SUPPLY_PROP_ONLINE:
 292                 val->intval = 1;
 293                 break;
 294
 295         case POWER_SUPPLY_PROP_CAPACITY:
 296                 if (dev->battery_min < dev->battery_max &&
 297                     dev->battery_val >= dev->battery_min &&
 298                     dev->battery_val <= dev->battery_max)
 299                         val->intval = (100 * (dev->battery_val - dev->battery_min)) /
 300                                 (dev->battery_max - dev->battery_min);
 301                 else
 302                         ret = -EINVAL;
 303                 break;
 304
 305         case POWER_SUPPLY_PROP_MODEL_NAME:
 306                 val->strval = dev->name;
 307                 break;
 308
 309         default:
 310                 ret = -EINVAL;
 311                 break;
 312         }
 313
 314         return ret;
 315 }
 316
 317 static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max)
 318 {
 319         struct power_supply *battery = &dev->battery;
 320         int ret;
 321
 322         if (battery->name != NULL)
 323                 return;         /* already initialized? */
 324
 325         battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
 326         if (battery->name == NULL)
 327                 return;
 328
 329         battery->type = POWER_SUPPLY_TYPE_BATTERY;
 330         battery->properties = hidinput_battery_props;
 331         battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
 332         battery->use_for_apm = 0;
 333         battery->get_property = hidinput_get_battery_property;
 334
 335         dev->battery_min = min;
 336         dev->battery_max = max;
 337
 338         ret = power_supply_register(&dev->dev, battery);
 339         if (ret != 0) {
 340                 hid_warn(dev, "can't register power supply: %d\n", ret);
 341                 kfree(battery->name);
 342                 battery->name = NULL;
 343         }
 344 }
 345
 346 static void hidinput_cleanup_battery(struct hid_device *dev)
 347 {
 348         if (!dev->battery.name)
 349                 return;
 350
 351         power_supply_unregister(&dev->battery);
 352         kfree(dev->battery.name);
 353         dev->battery.name = NULL;
 354 }
 355 #else  /* !CONFIG_HID_BATTERY_STRENGTH */
 356 static void hidinput_setup_battery(struct hid_device *dev, s32 min, s32 max)
 357 {
 358 }
 359
 360 static void hidinput_cleanup_battery(struct hid_device *dev)
 361 {
 362 }
 363 #endif  /* CONFIG_HID_BATTERY_STRENGTH */
 364
 365 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
 366                                      struct hid_usage *usage)
 367 {
 368         struct input_dev *input = hidinput->input;
 369         struct hid_device *device = input_get_drvdata(input);
 370         int max = 0, code;
 371         unsigned long *bit = NULL;
 372
 373         field->hidinput = hidinput;
 374
 375         if (field->flags & HID_MAIN_ITEM_CONSTANT)
 376                 goto ignore;
 377
 378         /* only LED usages are supported in output fields */
 379         if (field->report_type == HID_OUTPUT_REPORT &&
 380                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
 381                 goto ignore;
 382         }
 383
 384         if (device->driver->input_mapping) {
 385                 int ret = device->driver->input_mapping(device, hidinput, field,
 386                                 usage, &bit, &max);
 387                 if (ret > 0)
 388                         goto mapped;
 389                 if (ret < 0)
 390                         goto ignore;
 391         }
 392
 393         switch (usage->hid & HID_USAGE_PAGE) {
 394         case HID_UP_UNDEFINED:
 395                 goto ignore;
 396
 397         case HID_UP_KEYBOARD:
 398                 set_bit(EV_REP, input->evbit);
 399
 400                 if ((usage->hid & HID_USAGE) < 256) {
 401                         if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
 402                         map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
 403                 } else
 404                         map_key(KEY_UNKNOWN);
 405
 406                 break;
 407
 408         case HID_UP_BUTTON:
 409                 code = ((usage->hid - 1) & HID_USAGE);
 410
 411                 switch (field->application) {
 412                 case HID_GD_MOUSE:
 413                 case HID_GD_POINTER:  code += BTN_MOUSE; break;
 414                 case HID_GD_JOYSTICK:
 415                                 if (code <= 0xf)
 416                                         code += BTN_JOYSTICK;
 417                                 else
 418                                         code += BTN_TRIGGER_HAPPY;
 419                                 break;
 420                 case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
 421                 default:
 422                         switch (field->physical) {
 423                         case HID_GD_MOUSE:
 424                         case HID_GD_POINTER:  code += BTN_MOUSE; break;
 425                         case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
 426                         case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
 427                         default:              code += BTN_MISC;
 428                         }
 429                 }
 430
 431                 map_key(code);
 432                 break;
 433
 434         case HID_UP_SIMULATION:
 435                 switch (usage->hid & 0xffff) {
 436                 case 0xba: map_abs(ABS_RUDDER);   break;
 437                 case 0xbb: map_abs(ABS_THROTTLE); break;
 438                 case 0xc4: map_abs(ABS_GAS);      break;
 439                 case 0xc5: map_abs(ABS_BRAKE);    break;
 440                 case 0xc8: map_abs(ABS_WHEEL);    break;
 441                 default:   goto ignore;
 442                 }
 443                 break;
 444
 445         case HID_UP_GENDESK:
 446                 if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 447                         switch (usage->hid & 0xf) {
 448                         case 0x1: map_key_clear(KEY_POWER);  break;
 449                         case 0x2: map_key_clear(KEY_SLEEP);  break;
 450                         case 0x3: map_key_clear(KEY_WAKEUP); break;
 451                         case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
 452                         case 0x5: map_key_clear(KEY_MENU); break;
 453                         case 0x6: map_key_clear(KEY_PROG1); break;
 454                         case 0x7: map_key_clear(KEY_HELP); break;
 455                         case 0x8: map_key_clear(KEY_EXIT); break;
 456                         case 0x9: map_key_clear(KEY_SELECT); break;
 457                         case 0xa: map_key_clear(KEY_RIGHT); break;
 458                         case 0xb: map_key_clear(KEY_LEFT); break;
 459                         case 0xc: map_key_clear(KEY_UP); break;
 460                         case 0xd: map_key_clear(KEY_DOWN); break;
 461                         case 0xe: map_key_clear(KEY_POWER2); break;
 462                         case 0xf: map_key_clear(KEY_RESTART); break;
 463                         default: goto unknown;
 464                         }
 465                         break;
 466                 }
 467
 468                 if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
 469                         switch (usage->hid) {
 470                         case HID_GD_UP:    usage->hat_dir = 1; break;
 471                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
 472                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
 473                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
 474                         default: goto unknown;
 475                         }
 476                         if (field->dpad) {
 477                                 map_abs(field->dpad);
 478                                 goto ignore;
 479                         }
 480                         map_abs(ABS_HAT0X);
 481                         break;
 482                 }
 483
 484                 switch (usage->hid) {
 485                 /* These usage IDs map directly to the usage codes. */
 486                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
 487                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
 488                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
 489                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
 490                                 map_rel(usage->hid & 0xf);
 491                         else
 492                                 map_abs(usage->hid & 0xf);
 493                         break;
 494
 495                 case HID_GD_HATSWITCH:
 496                         usage->hat_min = field->logical_minimum;
 497                         usage->hat_max = field->logical_maximum;
 498                         map_abs(ABS_HAT0X);
 499                         break;
 500
 501                 case HID_GD_START:      map_key_clear(BTN_START);       break;
 502                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 503
 504                 default: goto unknown;
 505                 }
 506
 507                 break;
 508
 509         case HID_UP_LED:
 510                 switch (usage->hid & 0xffff) {                /* HID-Value:                   */
 511                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
 512                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
 513                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
 514                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
 515                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
 516                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
 517                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
 518                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
 519                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
 520                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
 521                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
 522
 523                 default: goto ignore;
 524                 }
 525                 break;
 526
 527         case HID_UP_DIGITIZER:
 528                 switch (usage->hid & 0xff) {
 529                 case 0x00: /* Undefined */
 530                         goto ignore;
 531
 532                 case 0x30: /* TipPressure */
 533                         if (!test_bit(BTN_TOUCH, input->keybit)) {
 534                                 device->quirks |= HID_QUIRK_NOTOUCH;
 535                                 set_bit(EV_KEY, input->evbit);
 536                                 set_bit(BTN_TOUCH, input->keybit);
 537                         }
 538                         map_abs_clear(ABS_PRESSURE);
 539                         break;
 540
 541                 case 0x32: /* InRange */
 542                         switch (field->physical & 0xff) {
 543                         case 0x21: map_key(BTN_TOOL_MOUSE); break;
 544                         case 0x22: map_key(BTN_TOOL_FINGER); break;
 545                         default: map_key(BTN_TOOL_PEN); break;
 546                         }
 547                         break;
 548
 549                 case 0x3c: /* Invert */
 550                         map_key_clear(BTN_TOOL_RUBBER);
 551                         break;
 552
 553                 case 0x33: /* Touch */
 554                 case 0x42: /* TipSwitch */
 555                 case 0x43: /* TipSwitch2 */
 556                         device->quirks &= ~HID_QUIRK_NOTOUCH;
 557                         map_key_clear(BTN_TOUCH);
 558                         break;
 559
 560                 case 0x44: /* BarrelSwitch */
 561                         map_key_clear(BTN_STYLUS);
 562                         break;
 563
 564                 case 0x46: /* TabletPick */
 565                         map_key_clear(BTN_STYLUS2);
 566                         break;
 567
 568                 case 0x51: /* ContactID */
 569                         device->quirks |= HID_QUIRK_MULTITOUCH;
 570                         goto unknown;
 571
 572                 default:  goto unknown;
 573                 }
 574                 break;
 575
 576         case HID_UP_CONSUMER:   /* USB HUT v1.12, pages 75-84 */
 577                 switch (usage->hid & HID_USAGE) {
 578                 case 0x000: goto ignore;
 579                 case 0x030: map_key_clear(KEY_POWER);           break;
 580                 case 0x031: map_key_clear(KEY_RESTART);         break;
 581                 case 0x032: map_key_clear(KEY_SLEEP);           break;
 582                 case 0x034: map_key_clear(KEY_SLEEP);           break;
 583                 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);  break;
 584                 case 0x036: map_key_clear(BTN_MISC);            break;
 585
 586                 case 0x040: map_key_clear(KEY_MENU);            break; /* Menu */
 587                 case 0x041: map_key_clear(KEY_SELECT);          break; /* Menu Pick */
 588                 case 0x042: map_key_clear(KEY_UP);              break; /* Menu Up */
 589                 case 0x043: map_key_clear(KEY_DOWN);            break; /* Menu Down */
 590                 case 0x044: map_key_clear(KEY_LEFT);            break; /* Menu Left */
 591                 case 0x045: map_key_clear(KEY_RIGHT);           break; /* Menu Right */
 592                 case 0x046: map_key_clear(KEY_ESC);             break; /* Menu Escape */
 593                 case 0x047: map_key_clear(KEY_KPPLUS);          break; /* Menu Value Increase */
 594                 case 0x048: map_key_clear(KEY_KPMINUS);         break; /* Menu Value Decrease */
 595
 596                 case 0x060: map_key_clear(KEY_INFO);            break; /* Data On Screen */
 597                 case 0x061: map_key_clear(KEY_SUBTITLE);        break; /* Closed Caption */
 598                 case 0x063: map_key_clear(KEY_VCR);             break; /* VCR/TV */
 599                 case 0x065: map_key_clear(KEY_CAMERA);          break; /* Snapshot */
 600                 case 0x069: map_key_clear(KEY_RED);             break;
 601                 case 0x06a: map_key_clear(KEY_GREEN);           break;
 602                 case 0x06b: map_key_clear(KEY_BLUE);            break;
 603                 case 0x06c: map_key_clear(KEY_YELLOW);          break;
 604                 case 0x06d: map_key_clear(KEY_ZOOM);            break;
 605
 606                 case 0x082: map_key_clear(KEY_VIDEO_NEXT);      break;
 607                 case 0x083: map_key_clear(KEY_LAST);            break;
 608                 case 0x084: map_key_clear(KEY_ENTER);           break;
 609                 case 0x088: map_key_clear(KEY_PC);              break;
 610                 case 0x089: map_key_clear(KEY_TV);              break;
 611                 case 0x08a: map_key_clear(KEY_WWW);             break;
 612                 case 0x08b: map_key_clear(KEY_DVD);             break;
 613                 case 0x08c: map_key_clear(KEY_PHONE);           break;
 614                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
 615                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
 616                 case 0x08f: map_key_clear(KEY_GAMES);           break;
 617                 case 0x090: map_key_clear(KEY_MEMO);            break;
 618                 case 0x091: map_key_clear(KEY_CD);              break;
 619                 case 0x092: map_key_clear(KEY_VCR);             break;
 620                 case 0x093: map_key_clear(KEY_TUNER);           break;
 621                 case 0x094: map_key_clear(KEY_EXIT);            break;
 622                 case 0x095: map_key_clear(KEY_HELP);            break;
 623                 case 0x096: map_key_clear(KEY_TAPE);            break;
 624                 case 0x097: map_key_clear(KEY_TV2);             break;
 625                 case 0x098: map_key_clear(KEY_SAT);             break;
 626                 case 0x09a: map_key_clear(KEY_PVR);             break;
 627
 628                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
 629                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
 630                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
 631
 632                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
 633                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
 634                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
 635                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
 636                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
 637                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
 638                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
 639                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
 640                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
 641                 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
 642                 case 0x0b9: map_key_clear(KEY_SHUFFLE);         break;
 643                 case 0x0bf: map_key_clear(KEY_SLOW);            break;
 644
 645                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
 646                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
 647                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
 648                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
 649                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
 650                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
 651                 case 0x0f5: map_key_clear(KEY_SLOW);            break;
 652
 653                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
 654                 case 0x183: map_key_clear(KEY_CONFIG);          break;
 655                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
 656                 case 0x185: map_key_clear(KEY_EDITOR);          break;
 657                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
 658                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
 659                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
 660                 case 0x189: map_key_clear(KEY_DATABASE);        break;
 661                 case 0x18a: map_key_clear(KEY_MAIL);            break;
 662                 case 0x18b: map_key_clear(KEY_NEWS);            break;
 663                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
 664                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
 665                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
 666                 case 0x191: map_key_clear(KEY_FINANCE);         break;
 667                 case 0x192: map_key_clear(KEY_CALC);            break;
 668                 case 0x193: map_key_clear(KEY_PLAYER);          break;
 669                 case 0x194: map_key_clear(KEY_FILE);            break;
 670                 case 0x196: map_key_clear(KEY_WWW);             break;
 671                 case 0x199: map_key_clear(KEY_CHAT);            break;
 672                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
 673                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
 674                 case 0x1a6: map_key_clear(KEY_HELP);            break;
 675                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
 676                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
 677                 case 0x1ae: map_key_clear(KEY_KEYBOARD);        break;
 678                 case 0x1b6: map_key_clear(KEY_IMAGES);          break;
 679                 case 0x1b7: map_key_clear(KEY_AUDIO);           break;
 680                 case 0x1b8: map_key_clear(KEY_VIDEO);           break;
 681                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
 682                 case 0x1bd: map_key_clear(KEY_INFO);            break;
 683                 case 0x201: map_key_clear(KEY_NEW);             break;
 684                 case 0x202: map_key_clear(KEY_OPEN);            break;
 685                 case 0x203: map_key_clear(KEY_CLOSE);           break;
 686                 case 0x204: map_key_clear(KEY_EXIT);            break;
 687                 case 0x207: map_key_clear(KEY_SAVE);            break;
 688                 case 0x208: map_key_clear(KEY_PRINT);           break;
 689                 case 0x209: map_key_clear(KEY_PROPS);           break;
 690                 case 0x21a: map_key_clear(KEY_UNDO);            break;
 691                 case 0x21b: map_key_clear(KEY_COPY);            break;
 692                 case 0x21c: map_key_clear(KEY_CUT);             break;
 693                 case 0x21d: map_key_clear(KEY_PASTE);           break;
 694                 case 0x21f: map_key_clear(KEY_FIND);            break;
 695                 case 0x221: map_key_clear(KEY_SEARCH);          break;
 696                 case 0x222: map_key_clear(KEY_GOTO);            break;
 697                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
 698                 case 0x224: map_key_clear(KEY_BACK);            break;
 699                 case 0x225: map_key_clear(KEY_FORWARD);         break;
 700                 case 0x226: map_key_clear(KEY_STOP);            break;
 701                 case 0x227: map_key_clear(KEY_REFRESH);         break;
 702                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
 703                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
 704                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
 705                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
 706                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
 707                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
 708                 case 0x238: map_rel(REL_HWHEEL);                break;
 709                 case 0x23d: map_key_clear(KEY_EDIT);            break;
 710                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
 711                 case 0x269: map_key_clear(KEY_INSERT);          break;
 712                 case 0x26a: map_key_clear(KEY_DELETE);          break;
 713                 case 0x279: map_key_clear(KEY_REDO);            break;
 714
 715                 case 0x289: map_key_clear(KEY_REPLY);           break;
 716                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
 717                 case 0x28c: map_key_clear(KEY_SEND);            break;
 718
 719                 default:    goto ignore;
 720                 }
 721                 break;
 722
 723         case HID_UP_GENDEVCTRLS:
 724                 if ((usage->hid & HID_USAGE) == 0x20) { /* Battery Strength */
 725                         hidinput_setup_battery(device,
 726                                                field->logical_minimum,
 727                                                field->logical_maximum);
 728                         goto ignore;
 729                 } else
 730                         goto unknown;
 731                 break;
 732
 733         case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 734                 set_bit(EV_REP, input->evbit);
 735                 switch (usage->hid & HID_USAGE) {
 736                 case 0x021: map_key_clear(KEY_PRINT);           break;
 737                 case 0x070: map_key_clear(KEY_HP);              break;
 738                 case 0x071: map_key_clear(KEY_CAMERA);          break;
 739                 case 0x072: map_key_clear(KEY_SOUND);           break;
 740                 case 0x073: map_key_clear(KEY_QUESTION);        break;
 741                 case 0x080: map_key_clear(KEY_EMAIL);           break;
 742                 case 0x081: map_key_clear(KEY_CHAT);            break;
 743                 case 0x082: map_key_clear(KEY_SEARCH);          break;
 744                 case 0x083: map_key_clear(KEY_CONNECT);         break;
 745                 case 0x084: map_key_clear(KEY_FINANCE);         break;
 746                 case 0x085: map_key_clear(KEY_SPORT);           break;
 747                 case 0x086: map_key_clear(KEY_SHOP);            break;
 748                 default:    goto ignore;
 749                 }
 750                 break;
 751
 752         case HID_UP_MSVENDOR:
 753                 goto ignore;
 754
 755         case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
 756                 set_bit(EV_REP, input->evbit);
 757                 goto ignore;
 758
 759         case HID_UP_LOGIVENDOR:
 760                 goto ignore;
 761
 762         case HID_UP_PID:
 763                 switch (usage->hid & HID_USAGE) {
 764                 case 0xa4: map_key_clear(BTN_DEAD);     break;
 765                 default: goto ignore;
 766                 }
 767                 break;
 768
 769         default:
 770         unknown:
 771                 if (field->report_size == 1) {
 772                         if (field->report->type == HID_OUTPUT_REPORT) {
 773                                 map_led(LED_MISC);
 774                                 break;
 775                         }
 776                         map_key(BTN_MISC);
 777                         break;
 778                 }
 779                 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 780                         map_rel(REL_MISC);
 781                         break;
 782                 }
 783                 map_abs(ABS_MISC);
 784                 break;
 785         }
 786
 787 mapped:
 788         if (device->driver->input_mapped && device->driver->input_mapped(device,
 789                                 hidinput, field, usage, &bit, &max) < 0)
 790                 goto ignore;
 791
 792         set_bit(usage->type, input->evbit);
 793
 794         while (usage->code <= max && test_and_set_bit(usage->code, bit))
 795                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 796
 797         if (usage->code > max)
 798                 goto ignore;
 799
 800
 801         if (usage->type == EV_ABS) {
 802
 803                 int a = field->logical_minimum;
 804                 int b = field->logical_maximum;
 805
 806                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 807                         a = field->logical_minimum = 0;
 808                         b = field->logical_maximum = 255;
 809                 }
 810
 811                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
 812                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 813                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
 814
 815                 input_abs_set_res(input, usage->code,
 816                                   hidinput_calc_abs_res(field, usage->code));
 817
 818                 /* use a larger default input buffer for MT devices */
 819                 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
 820                         input_set_events_per_packet(input, 60);
 821         }
 822
 823         if (usage->type == EV_ABS &&
 824             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
 825                 int i;
 826                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 827                         input_set_abs_params(input, i, -1, 1, 0, 0);
 828                         set_bit(i, input->absbit);
 829                 }
 830                 if (usage->hat_dir && !field->dpad)
 831                         field->dpad = usage->code;
 832         }
 833
 834         /* for those devices which produce Consumer volume usage as relative,
 835          * we emulate pressing volumeup/volumedown appropriate number of times
 836          * in hidinput_hid_event()
 837          */
 838         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 839                         (usage->code == ABS_VOLUME)) {
 840                 set_bit(KEY_VOLUMEUP, input->keybit);
 841                 set_bit(KEY_VOLUMEDOWN, input->keybit);
 842         }
 843
 844         if (usage->type == EV_KEY) {
 845                 set_bit(EV_MSC, input->evbit);
 846                 set_bit(MSC_SCAN, input->mscbit);
 847         }
 848
 849 ignore:
 850         return;
 851
 852 }
 853
 854 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
 855 {
 856         struct input_dev *input;
 857         unsigned *quirks = &hid->quirks;
 858
 859         if (!field->hidinput)
 860                 return;
 861
 862         input = field->hidinput->input;
 863
 864 #ifdef CONFIG_HID_BATTERY_STRENGTH
 865         if (usage->hid == HID_DC_BATTERYSTRENGTH) {
 866                 hid->battery_val = value;
 867                 hid_dbg(hid, "battery value is %d (range %d-%d)\n",
 868                         value, hid->battery_min, hid->battery_max);
 869                 return;
 870         }
 871 #endif
 872         if (!usage->type)
 873                 return;
 874
 875         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
 876                 int hat_dir = usage->hat_dir;
 877                 if (!hat_dir)
 878                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 879                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
 880                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
 881                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
 882                 return;
 883         }
 884
 885         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 886                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
 887                 return;
 888         }
 889
 890         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
 891                 if (value) {
 892                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
 893                         return;
 894                 }
 895                 input_event(input, usage->type, usage->code, 0);
 896                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
 897                 return;
 898         }
 899
 900         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
 901                 int a = field->logical_minimum;
 902                 int b = field->logical_maximum;
 903                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
 904         }
 905
 906         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
 907                 dbg_hid("Maximum Effects - %d\n",value);
 908                 return;
 909         }
 910
 911         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
 912                 dbg_hid("PID Pool Report\n");
 913                 return;
 914         }
 915
 916         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
 917                 return;
 918
 919         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 920                         (usage->code == ABS_VOLUME)) {
 921                 int count = abs(value);
 922                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
 923                 int i;
 924
 925                 for (i = 0; i < count; i++) {
 926                         input_event(input, EV_KEY, direction, 1);
 927                         input_sync(input);
 928                         input_event(input, EV_KEY, direction, 0);
 929                         input_sync(input);
 930                 }
 931                 return;
 932         }
 933
 934         /* Ignore out-of-range values as per HID specification, section 5.10 */
 935         if (value < field->logical_minimum || value > field->logical_maximum) {
 936                 dbg_hid("Ignoring out-of-range value %x\n", value);
 937                 return;
 938         }
 939
 940         /* report the usage code as scancode if the key status has changed */
 941         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
 942                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
 943
 944         input_event(input, usage->type, usage->code, value);
 945
 946         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
 947                 input_event(input, usage->type, usage->code, 0);
 948 }
 949
 950 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
 951 {
 952         struct hid_input *hidinput;
 953
 954         if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
 955                 return;
 956
 957         list_for_each_entry(hidinput, &hid->inputs, list)
 958                 input_sync(hidinput->input);
 959 }
 960 EXPORT_SYMBOL_GPL(hidinput_report_event);
 961
 962 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
 963 {
 964         struct hid_report *report;
 965         int i, j;
 966
 967         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
 968                 for (i = 0; i < report->maxfield; i++) {
 969                         *field = report->field[i];
 970                         for (j = 0; j < (*field)->maxusage; j++)
 971                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
 972                                         return j;
 973                 }
 974         }
 975         return -1;
 976 }
 977 EXPORT_SYMBOL_GPL(hidinput_find_field);
 978
 979 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
 980 {
 981         struct hid_report *report;
 982         struct hid_field *field;
 983         int i, j;
 984
 985         list_for_each_entry(report,
 986                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
 987                             list) {
 988                 for (i = 0; i < report->maxfield; i++) {
 989                         field = report->field[i];
 990                         for (j = 0; j < field->maxusage; j++)
 991                                 if (field->usage[j].type == EV_LED)
 992                                         return field;
 993                 }
 994         }
 995         return NULL;
 996 }
 997 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
 998
 999 unsigned int hidinput_count_leds(struct hid_device *hid)
1000 {
1001         struct hid_report *report;
1002         struct hid_field *field;
1003         int i, j;
1004         unsigned int count = 0;
1005
1006         list_for_each_entry(report,
1007                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1008                             list) {
1009                 for (i = 0; i < report->maxfield; i++) {
1010                         field = report->field[i];
1011                         for (j = 0; j < field->maxusage; j++)
1012                                 if (field->usage[j].type == EV_LED &&
1013                                     field->value[j])
1014                                         count += 1;
1015                 }
1016         }
1017         return count;
1018 }
1019 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1020
1021 static int hidinput_open(struct input_dev *dev)
1022 {
1023         struct hid_device *hid = input_get_drvdata(dev);
1024
1025         return hid_hw_open(hid);
1026 }
1027
1028 static void hidinput_close(struct input_dev *dev)
1029 {
1030         struct hid_device *hid = input_get_drvdata(dev);
1031
1032         hid_hw_close(hid);
1033 }
1034
1035 static void report_features(struct hid_device *hid)
1036 {
1037         struct hid_driver *drv = hid->driver;
1038         struct hid_report_enum *rep_enum;
1039         struct hid_report *rep;
1040         int i, j;
1041
1042         if (!drv->feature_mapping)
1043                 return;
1044
1045         rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1046         list_for_each_entry(rep, &rep_enum->report_list, list)
1047                 for (i = 0; i < rep->maxfield; i++)
1048                         for (j = 0; j < rep->field[i]->maxusage; j++)
1049                                 drv->feature_mapping(hid, rep->field[i],
1050                                                      rep->field[i]->usage + j);
1051 }
1052
1053 /*
1054  * Register the input device; print a message.
1055  * Configure the input layer interface
1056  * Read all reports and initialize the absolute field values.
1057  */
1058
1059 int hidinput_connect(struct hid_device *hid, unsigned int force)
1060 {
1061         struct hid_report *report;
1062         struct hid_input *hidinput = NULL;
1063         struct input_dev *input_dev;
1064         int i, j, k;
1065
1066         INIT_LIST_HEAD(&hid->inputs);
1067
1068         if (!force) {
1069                 for (i = 0; i < hid->maxcollection; i++) {
1070                         struct hid_collection *col = &hid->collection[i];
1071                         if (col->type == HID_COLLECTION_APPLICATION ||
1072                                         col->type == HID_COLLECTION_PHYSICAL)
1073                                 if (IS_INPUT_APPLICATION(col->usage))
1074                                         break;
1075                 }
1076
1077                 if (i == hid->maxcollection)
1078                         return -1;
1079         }
1080
1081         report_features(hid);
1082
1083         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1084                 if (k == HID_OUTPUT_REPORT &&
1085                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1086                         continue;
1087
1088                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1089
1090                         if (!report->maxfield)
1091                                 continue;
1092
1093                         if (!hidinput) {
1094                                 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1095                                 input_dev = input_allocate_device();
1096                                 if (!hidinput || !input_dev) {
1097                                         kfree(hidinput);
1098                                         input_free_device(input_dev);
1099                                         hid_err(hid, "Out of memory during hid input probe\n");
1100                                         goto out_unwind;
1101                                 }
1102
1103                                 input_set_drvdata(input_dev, hid);
1104                                 input_dev->event =
1105                                         hid->ll_driver->hidinput_input_event;
1106                                 input_dev->open = hidinput_open;
1107                                 input_dev->close = hidinput_close;
1108                                 input_dev->setkeycode = hidinput_setkeycode;
1109                                 input_dev->getkeycode = hidinput_getkeycode;
1110
1111                                 input_dev->name = hid->name;
1112                                 input_dev->phys = hid->phys;
1113                                 input_dev->uniq = hid->uniq;
1114                                 input_dev->id.bustype = hid->bus;
1115                                 input_dev->id.vendor  = hid->vendor;
1116                                 input_dev->id.product = hid->product;
1117                                 input_dev->id.version = hid->version;
1118                                 input_dev->dev.parent = hid->dev.parent;
1119                                 hidinput->input = input_dev;
1120                                 list_add_tail(&hidinput->list, &hid->inputs);
1121                         }
1122
1123                         for (i = 0; i < report->maxfield; i++)
1124                                 for (j = 0; j < report->field[i]->maxusage; j++)
1125                                         hidinput_configure_usage(hidinput, report->field[i],
1126                                                                  report->field[i]->usage + j);
1127
1128                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1129                                 /* This will leave hidinput NULL, so that it
1130                                  * allocates another one if we have more inputs on
1131                                  * the same interface. Some devices (e.g. Happ's
1132                                  * UGCI) cram a lot of unrelated inputs into the
1133                                  * same interface. */
1134                                 hidinput->report = report;
1135                                 if (input_register_device(hidinput->input))
1136                                         goto out_cleanup;
1137                                 hidinput = NULL;
1138                         }
1139                 }
1140         }
1141
1142         if (hid->quirks & HID_QUIRK_MULTITOUCH) {
1143                 /* generic hid does not know how to handle multitouch devices */
1144                 if (hidinput)
1145                         goto out_cleanup;
1146                 goto out_unwind;
1147         }
1148
1149         if (hidinput && input_register_device(hidinput->input))
1150                 goto out_cleanup;
1151
1152         return 0;
1153
1154 out_cleanup:
1155         list_del(&hidinput->list);
1156         input_free_device(hidinput->input);
1157         kfree(hidinput);
1158 out_unwind:
1159         /* unwind the ones we already registered */
1160         hidinput_disconnect(hid);
1161
1162         return -1;
1163 }
1164 EXPORT_SYMBOL_GPL(hidinput_connect);
1165
1166 void hidinput_disconnect(struct hid_device *hid)
1167 {
1168         struct hid_input *hidinput, *next;
1169
1170         hidinput_cleanup_battery(hid);
1171
1172         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1173                 list_del(&hidinput->list);
1174                 input_unregister_device(hidinput->input);
1175                 kfree(hidinput);
1176         }
1177 }
1178 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1179