drivers/hid/hid-input.c

   1 /*
   2  *  Copyright (c) 2000-2001 Vojtech Pavlik
   3  *  Copyright (c) 2006-2007 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 static int hid_apple_fnmode = 1;
  36 module_param_named(pb_fnmode, hid_apple_fnmode, int, 0644);
  37 MODULE_PARM_DESC(pb_fnmode,
  38                 "Mode of fn key on Apple keyboards (0 = disabled, 1 = fkeyslast, 2 = fkeysfirst)");
  39
  40 #define unk     KEY_UNKNOWN
  41
  42 static const unsigned char hid_keyboard[256] = {
  43           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  44          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  45           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  46          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  47          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  48         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  49          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  50         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  51         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  52         122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  53         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  54         unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
  55         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  56         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  57          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  58         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  59 };
  60
  61 /* extended mapping for certain Logitech hardware (Logitech cordless desktop LX500) */
  62 #define LOGITECH_EXPANDED_KEYMAP_SIZE 80
  63 static int logitech_expanded_keymap[LOGITECH_EXPANDED_KEYMAP_SIZE] = {
  64           0,216,  0,213,175,156,  0,  0,  0,  0,
  65         144,  0,  0,  0,  0,  0,  0,  0,  0,212,
  66         174,167,152,161,112,  0,  0,  0,154,  0,
  67           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  68           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  69           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  70           0,  0,  0,  0,  0,183,184,185,186,187,
  71         188,189,190,191,192,193,194,  0,  0,  0
  72 };
  73
  74 static const struct {
  75         __s32 x;
  76         __s32 y;
  77 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  78
  79 #define map_abs(c)      do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0)
  80 #define map_rel(c)      do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
  81 #define map_key(c)      do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
  82 #define map_led(c)      do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
  83
  84 #define map_abs_clear(c)        do { map_abs(c); clear_bit(c, bit); } while (0)
  85 #define map_key_clear(c)        do { map_key(c); clear_bit(c, bit); } while (0)
  86
  87 #ifdef CONFIG_USB_HIDINPUT_POWERBOOK
  88
  89 struct hidinput_key_translation {
  90         u16 from;
  91         u16 to;
  92         u8 flags;
  93 };
  94
  95 #define APPLE_FLAG_FKEY 0x01
  96
  97 static struct hidinput_key_translation apple_fn_keys[] = {
  98         { KEY_BACKSPACE, KEY_DELETE },
  99         { KEY_F1,       KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
 100         { KEY_F2,       KEY_BRIGHTNESSUP,   APPLE_FLAG_FKEY },
 101         { KEY_F3,       KEY_FN_F5,          APPLE_FLAG_FKEY }, /* Exposé */
 102         { KEY_F4,       KEY_FN_F4,          APPLE_FLAG_FKEY }, /* Dashboard */
 103         { KEY_F7,       KEY_PREVIOUSSONG,   APPLE_FLAG_FKEY },
 104         { KEY_F8,       KEY_PLAYPAUSE,      APPLE_FLAG_FKEY },
 105         { KEY_F9,       KEY_NEXTSONG,       APPLE_FLAG_FKEY },
 106         { KEY_F10,      KEY_MUTE,           APPLE_FLAG_FKEY },
 107         { KEY_F11,      KEY_VOLUMEDOWN,     APPLE_FLAG_FKEY },
 108         { KEY_F12,      KEY_VOLUMEUP,       APPLE_FLAG_FKEY },
 109         { KEY_UP,       KEY_PAGEUP },
 110         { KEY_DOWN,     KEY_PAGEDOWN },
 111         { KEY_LEFT,     KEY_HOME },
 112         { KEY_RIGHT,    KEY_END },
 113         { }
 114 };
 115
 116 static struct hidinput_key_translation powerbook_fn_keys[] = {
 117         { KEY_BACKSPACE, KEY_DELETE },
 118         { KEY_F1,       KEY_BRIGHTNESSDOWN,     APPLE_FLAG_FKEY },
 119         { KEY_F2,       KEY_BRIGHTNESSUP,       APPLE_FLAG_FKEY },
 120         { KEY_F3,       KEY_MUTE,               APPLE_FLAG_FKEY },
 121         { KEY_F4,       KEY_VOLUMEDOWN,         APPLE_FLAG_FKEY },
 122         { KEY_F5,       KEY_VOLUMEUP,           APPLE_FLAG_FKEY },
 123         { KEY_F6,       KEY_NUMLOCK,            APPLE_FLAG_FKEY },
 124         { KEY_F7,       KEY_SWITCHVIDEOMODE,    APPLE_FLAG_FKEY },
 125         { KEY_F8,       KEY_KBDILLUMTOGGLE,     APPLE_FLAG_FKEY },
 126         { KEY_F9,       KEY_KBDILLUMDOWN,       APPLE_FLAG_FKEY },
 127         { KEY_F10,      KEY_KBDILLUMUP,         APPLE_FLAG_FKEY },
 128         { KEY_UP,       KEY_PAGEUP },
 129         { KEY_DOWN,     KEY_PAGEDOWN },
 130         { KEY_LEFT,     KEY_HOME },
 131         { KEY_RIGHT,    KEY_END },
 132         { }
 133 };
 134
 135 static struct hidinput_key_translation powerbook_numlock_keys[] = {
 136         { KEY_J,        KEY_KP1 },
 137         { KEY_K,        KEY_KP2 },
 138         { KEY_L,        KEY_KP3 },
 139         { KEY_U,        KEY_KP4 },
 140         { KEY_I,        KEY_KP5 },
 141         { KEY_O,        KEY_KP6 },
 142         { KEY_7,        KEY_KP7 },
 143         { KEY_8,        KEY_KP8 },
 144         { KEY_9,        KEY_KP9 },
 145         { KEY_M,        KEY_KP0 },
 146         { KEY_DOT,      KEY_KPDOT },
 147         { KEY_SLASH,    KEY_KPPLUS },
 148         { KEY_SEMICOLON, KEY_KPMINUS },
 149         { KEY_P,        KEY_KPASTERISK },
 150         { KEY_MINUS,    KEY_KPEQUAL },
 151         { KEY_0,        KEY_KPSLASH },
 152         { KEY_F6,       KEY_NUMLOCK },
 153         { KEY_KPENTER,  KEY_KPENTER },
 154         { KEY_BACKSPACE, KEY_BACKSPACE },
 155         { }
 156 };
 157
 158 static struct hidinput_key_translation apple_iso_keyboard[] = {
 159         { KEY_GRAVE,    KEY_102ND },
 160         { KEY_102ND,    KEY_GRAVE },
 161         { }
 162 };
 163
 164 static struct hidinput_key_translation *find_translation(struct hidinput_key_translation *table, u16 from)
 165 {
 166         struct hidinput_key_translation *trans;
 167
 168         /* Look for the translation */
 169         for (trans = table; trans->from; trans++)
 170                 if (trans->from == from)
 171                         return trans;
 172
 173         return NULL;
 174 }
 175
 176 int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
 177                 struct hid_usage *usage, __s32 value)
 178 {
 179         struct hidinput_key_translation *trans;
 180
 181         if (usage->code == KEY_FN) {
 182                 if (value) hid->quirks |=  HID_QUIRK_APPLE_FN_ON;
 183                 else       hid->quirks &= ~HID_QUIRK_APPLE_FN_ON;
 184
 185                 input_event(input, usage->type, usage->code, value);
 186
 187                 return 1;
 188         }
 189
 190         if (hid_apple_fnmode) {
 191                 int do_translate;
 192
 193                 trans = find_translation((hid->product < 0x220 ||
 194                                           hid->product >= 0x300) ?
 195                                          powerbook_fn_keys : apple_fn_keys,
 196                                          usage->code);
 197                 if (trans) {
 198                         if (test_bit(usage->code, hid->apple_pressed_fn))
 199                                 do_translate = 1;
 200                         else if (trans->flags & APPLE_FLAG_FKEY)
 201                                 do_translate =
 202                                         (hid_apple_fnmode == 2 &&  (hid->quirks & HID_QUIRK_APPLE_FN_ON)) ||
 203                                         (hid_apple_fnmode == 1 && !(hid->quirks & HID_QUIRK_APPLE_FN_ON));
 204                         else
 205                                 do_translate = (hid->quirks & HID_QUIRK_APPLE_FN_ON);
 206
 207                         if (do_translate) {
 208                                 if (value)
 209                                         set_bit(usage->code, hid->apple_pressed_fn);
 210                                 else
 211                                         clear_bit(usage->code, hid->apple_pressed_fn);
 212
 213                                 input_event(input, usage->type, trans->to, value);
 214
 215                                 return 1;
 216                         }
 217                 }
 218
 219                 if (hid->quirks & HID_QUIRK_APPLE_NUMLOCK_EMULATION && (
 220                                 test_bit(usage->code, hid->pb_pressed_numlock) ||
 221                                 test_bit(LED_NUML, input->led))) {
 222                         trans = find_translation(powerbook_numlock_keys, usage->code);
 223
 224                         if (trans) {
 225                                 if (value)
 226                                         set_bit(usage->code, hid->pb_pressed_numlock);
 227                                 else
 228                                         clear_bit(usage->code, hid->pb_pressed_numlock);
 229
 230                                 input_event(input, usage->type, trans->to, value);
 231                         }
 232
 233                         return 1;
 234                 }
 235         }
 236
 237         if (hid->quirks & HID_QUIRK_APPLE_ISO_KEYBOARD) {
 238                 trans = find_translation(apple_iso_keyboard, usage->code);
 239                 if (trans) {
 240                         input_event(input, usage->type, trans->to, value);
 241                         return 1;
 242                 }
 243         }
 244
 245         return 0;
 246 }
 247
 248 static void hidinput_apple_setup(struct input_dev *input)
 249 {
 250         struct hidinput_key_translation *trans;
 251
 252         set_bit(KEY_NUMLOCK, input->keybit);
 253
 254         /* Enable all needed keys */
 255         for (trans = apple_fn_keys; trans->from; trans++)
 256                 set_bit(trans->to, input->keybit);
 257
 258         for (trans = powerbook_fn_keys; trans->from; trans++)
 259                 set_bit(trans->to, input->keybit);
 260
 261         for (trans = powerbook_numlock_keys; trans->from; trans++)
 262                 set_bit(trans->to, input->keybit);
 263
 264         for (trans = apple_iso_keyboard; trans->from; trans++)
 265                 set_bit(trans->to, input->keybit);
 266
 267 }
 268 #else
 269 inline int hidinput_apple_event(struct hid_device *hid,
 270                                        struct input_dev *input,
 271                                        struct hid_usage *usage, __s32 value)
 272 {
 273         return 0;
 274 }
 275
 276 static inline void hidinput_apple_setup(struct input_dev *input)
 277 {
 278 }
 279 #endif
 280
 281 static inline int match_scancode(int code, int scancode)
 282 {
 283         if (scancode == 0)
 284                 return 1;
 285         return ((code & (HID_USAGE_PAGE | HID_USAGE)) == scancode);
 286 }
 287
 288 static inline int match_keycode(int code, int keycode)
 289 {
 290         if (keycode == 0)
 291                 return 1;
 292         return (code == keycode);
 293 }
 294
 295 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
 296                 int scancode, int keycode)
 297 {
 298         int i, j, k;
 299         struct hid_report *report;
 300         struct hid_usage *usage;
 301
 302         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
 303                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 304                         for (i = 0; i < report->maxfield; i++) {
 305                                 for ( j = 0; j < report->field[i]->maxusage; j++) {
 306                                         usage = report->field[i]->usage + j;
 307                                         if (usage->type == EV_KEY &&
 308                                                 match_scancode(usage->hid, scancode) &&
 309                                                 match_keycode(usage->code, keycode))
 310                                                 return usage;
 311                                 }
 312                         }
 313                 }
 314         }
 315         return NULL;
 316 }
 317
 318 static int hidinput_getkeycode(struct input_dev *dev, int scancode,
 319                                 int *keycode)
 320 {
 321         struct hid_device *hid = input_get_drvdata(dev);
 322         struct hid_usage *usage;
 323
 324         usage = hidinput_find_key(hid, scancode, 0);
 325         if (usage) {
 326                 *keycode = usage->code;
 327                 return 0;
 328         }
 329         return -EINVAL;
 330 }
 331
 332 static int hidinput_setkeycode(struct input_dev *dev, int scancode,
 333                                 int keycode)
 334 {
 335         struct hid_device *hid = input_get_drvdata(dev);
 336         struct hid_usage *usage;
 337         int old_keycode;
 338
 339         if (keycode < 0 || keycode > KEY_MAX)
 340                 return -EINVAL;
 341
 342         usage = hidinput_find_key(hid, scancode, 0);
 343         if (usage) {
 344                 old_keycode = usage->code;
 345                 usage->code = keycode;
 346
 347                 clear_bit(old_keycode, dev->keybit);
 348                 set_bit(usage->code, dev->keybit);
 349                 dbg_hid(KERN_DEBUG "Assigned keycode %d to HID usage code %x\n", keycode, scancode);
 350                 /* Set the keybit for the old keycode if the old keycode is used
 351                  * by another key */
 352                 if (hidinput_find_key (hid, 0, old_keycode))
 353                         set_bit(old_keycode, dev->keybit);
 354
 355                 return 0;
 356         }
 357
 358         return -EINVAL;
 359 }
 360
 361
 362 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
 363                                      struct hid_usage *usage)
 364 {
 365         struct input_dev *input = hidinput->input;
 366         struct hid_device *device = input_get_drvdata(input);
 367         int max = 0, code, ret;
 368         unsigned long *bit = NULL;
 369
 370         field->hidinput = hidinput;
 371
 372         dbg_hid("Mapping: ");
 373         hid_resolv_usage(usage->hid);
 374         dbg_hid_line(" ---> ");
 375
 376         if (field->flags & HID_MAIN_ITEM_CONSTANT)
 377                 goto ignore;
 378
 379         /* only LED usages are supported in output fields */
 380         if (field->report_type == HID_OUTPUT_REPORT &&
 381                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
 382                 dbg_hid_line(" [non-LED output field] ");
 383                 goto ignore;
 384         }
 385
 386         /* handle input mappings for quirky devices */
 387         ret = hidinput_mapping_quirks(usage, input, &bit, &max);
 388         if (ret)
 389                 goto mapped;
 390
 391         switch (usage->hid & HID_USAGE_PAGE) {
 392
 393                 case HID_UP_UNDEFINED:
 394                         goto ignore;
 395
 396                 case HID_UP_KEYBOARD:
 397
 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
 410                         code = ((usage->hid - 1) & 0xf);
 411
 412                         switch (field->application) {
 413                                 case HID_GD_MOUSE:
 414                                 case HID_GD_POINTER:  code += 0x110; break;
 415                                 case HID_GD_JOYSTICK: code += 0x120; break;
 416                                 case HID_GD_GAMEPAD:  code += 0x130; break;
 417                                 default:
 418                                         switch (field->physical) {
 419                                                 case HID_GD_MOUSE:
 420                                                 case HID_GD_POINTER:  code += 0x110; break;
 421                                                 case HID_GD_JOYSTICK: code += 0x120; break;
 422                                                 case HID_GD_GAMEPAD:  code += 0x130; break;
 423                                                 default:              code += 0x100;
 424                                         }
 425                         }
 426
 427                         /* Special handling for Logitech Cordless Desktop */
 428                         if (field->application != HID_GD_MOUSE) {
 429                                 if (device->quirks & HID_QUIRK_LOGITECH_EXPANDED_KEYMAP) {
 430                                         int hid = usage->hid & HID_USAGE;
 431                                         if (hid < LOGITECH_EXPANDED_KEYMAP_SIZE && logitech_expanded_keymap[hid] != 0)
 432                                                 code = logitech_expanded_keymap[hid];
 433                                 }
 434                         } else {
 435                                 if (device->quirks & HID_QUIRK_LOGITECH_IGNORE_DOUBLED_WHEEL) {
 436                                         int hid = usage->hid & HID_USAGE;
 437                                         if (hid == 7 || hid == 8)
 438                                                 goto ignore;
 439                                 }
 440                         }
 441
 442                         map_key(code);
 443                         break;
 444
 445
 446                 case HID_UP_SIMULATION:
 447
 448                         switch (usage->hid & 0xffff) {
 449                                 case 0xba: map_abs(ABS_RUDDER);   break;
 450                                 case 0xbb: map_abs(ABS_THROTTLE); break;
 451                                 case 0xc4: map_abs(ABS_GAS);      break;
 452                                 case 0xc5: map_abs(ABS_BRAKE);    break;
 453                                 case 0xc8: map_abs(ABS_WHEEL);    break;
 454                                 default:   goto ignore;
 455                         }
 456                         break;
 457
 458                 case HID_UP_GENDESK:
 459
 460                         if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 461                                 switch (usage->hid & 0xf) {
 462                                         case 0x1: map_key_clear(KEY_POWER);  break;
 463                                         case 0x2: map_key_clear(KEY_SLEEP);  break;
 464                                         case 0x3: map_key_clear(KEY_WAKEUP); break;
 465                                         default: goto unknown;
 466                                 }
 467                                 break;
 468                         }
 469
 470                         if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
 471                                 switch (usage->hid) {
 472                                         case HID_GD_UP:    usage->hat_dir = 1; break;
 473                                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
 474                                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
 475                                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
 476                                         default: goto unknown;
 477                                 }
 478                                 if (field->dpad) {
 479                                         map_abs(field->dpad);
 480                                         goto ignore;
 481                                 }
 482                                 map_abs(ABS_HAT0X);
 483                                 break;
 484                         }
 485
 486                         switch (usage->hid) {
 487
 488                                 /* These usage IDs map directly to the usage codes. */
 489                                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
 490                                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
 491                                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
 492                                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
 493                                                 map_rel(usage->hid & 0xf);
 494                                         else
 495                                                 map_abs(usage->hid & 0xf);
 496                                         break;
 497
 498                                 case HID_GD_HATSWITCH:
 499                                         usage->hat_min = field->logical_minimum;
 500                                         usage->hat_max = field->logical_maximum;
 501                                         map_abs(ABS_HAT0X);
 502                                         break;
 503
 504                                 case HID_GD_START:      map_key_clear(BTN_START);       break;
 505                                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 506
 507                                 default: goto unknown;
 508                         }
 509
 510                         break;
 511
 512                 case HID_UP_LED:
 513
 514                         switch (usage->hid & 0xffff) {                        /* HID-Value:                   */
 515                                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
 516                                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
 517                                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
 518                                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
 519                                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
 520                                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
 521                                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
 522                                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
 523                                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
 524                                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
 525                                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
 526
 527                                 default: goto ignore;
 528                         }
 529                         break;
 530
 531                 case HID_UP_DIGITIZER:
 532
 533                         switch (usage->hid & 0xff) {
 534
 535                                 case 0x30: /* TipPressure */
 536                                         if (!test_bit(BTN_TOUCH, input->keybit)) {
 537                                                 device->quirks |= HID_QUIRK_NOTOUCH;
 538                                                 set_bit(EV_KEY, input->evbit);
 539                                                 set_bit(BTN_TOUCH, input->keybit);
 540                                         }
 541
 542                                         map_abs_clear(ABS_PRESSURE);
 543                                         break;
 544
 545                                 case 0x32: /* InRange */
 546                                         switch (field->physical & 0xff) {
 547                                                 case 0x21: map_key(BTN_TOOL_MOUSE); break;
 548                                                 case 0x22: map_key(BTN_TOOL_FINGER); break;
 549                                                 default: map_key(BTN_TOOL_PEN); break;
 550                                         }
 551                                         break;
 552
 553                                 case 0x3c: /* Invert */
 554                                         map_key_clear(BTN_TOOL_RUBBER);
 555                                         break;
 556
 557                                 case 0x33: /* Touch */
 558                                 case 0x42: /* TipSwitch */
 559                                 case 0x43: /* TipSwitch2 */
 560                                         device->quirks &= ~HID_QUIRK_NOTOUCH;
 561                                         map_key_clear(BTN_TOUCH);
 562                                         break;
 563
 564                                 case 0x44: /* BarrelSwitch */
 565                                         map_key_clear(BTN_STYLUS);
 566                                         break;
 567
 568                                 default:  goto unknown;
 569                         }
 570                         break;
 571
 572                 case HID_UP_CONSUMER:   /* USB HUT v1.1, pages 56-62 */
 573
 574                         switch (usage->hid & HID_USAGE) {
 575                                 case 0x000: goto ignore;
 576                                 case 0x034: map_key_clear(KEY_SLEEP);           break;
 577                                 case 0x036: map_key_clear(BTN_MISC);            break;
 578
 579                                 case 0x040: map_key_clear(KEY_MENU);            break;
 580                                 case 0x045: map_key_clear(KEY_RADIO);           break;
 581
 582                                 case 0x083: map_key_clear(KEY_LAST);            break;
 583                                 case 0x088: map_key_clear(KEY_PC);              break;
 584                                 case 0x089: map_key_clear(KEY_TV);              break;
 585                                 case 0x08a: map_key_clear(KEY_WWW);             break;
 586                                 case 0x08b: map_key_clear(KEY_DVD);             break;
 587                                 case 0x08c: map_key_clear(KEY_PHONE);           break;
 588                                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
 589                                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
 590                                 case 0x08f: map_key_clear(KEY_GAMES);           break;
 591                                 case 0x090: map_key_clear(KEY_MEMO);            break;
 592                                 case 0x091: map_key_clear(KEY_CD);              break;
 593                                 case 0x092: map_key_clear(KEY_VCR);             break;
 594                                 case 0x093: map_key_clear(KEY_TUNER);           break;
 595                                 case 0x094: map_key_clear(KEY_EXIT);            break;
 596                                 case 0x095: map_key_clear(KEY_HELP);            break;
 597                                 case 0x096: map_key_clear(KEY_TAPE);            break;
 598                                 case 0x097: map_key_clear(KEY_TV2);             break;
 599                                 case 0x098: map_key_clear(KEY_SAT);             break;
 600                                 case 0x09a: map_key_clear(KEY_PVR);             break;
 601
 602                                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
 603                                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
 604                                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
 605
 606                                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
 607                                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
 608                                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
 609                                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
 610                                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
 611                                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
 612                                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
 613                                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
 614                                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
 615
 616                                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
 617                                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
 618                                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
 619                                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
 620                                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
 621                                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
 622
 623                                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
 624                                 case 0x183: map_key_clear(KEY_CONFIG);          break;
 625                                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
 626                                 case 0x185: map_key_clear(KEY_EDITOR);          break;
 627                                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
 628                                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
 629                                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
 630                                 case 0x189: map_key_clear(KEY_DATABASE);        break;
 631                                 case 0x18a: map_key_clear(KEY_MAIL);            break;
 632                                 case 0x18b: map_key_clear(KEY_NEWS);            break;
 633                                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
 634                                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
 635                                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
 636                                 case 0x191: map_key_clear(KEY_FINANCE);         break;
 637                                 case 0x192: map_key_clear(KEY_CALC);            break;
 638                                 case 0x194: map_key_clear(KEY_FILE);            break;
 639                                 case 0x196: map_key_clear(KEY_WWW);             break;
 640                                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
 641                                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
 642                                 case 0x1a6: map_key_clear(KEY_HELP);            break;
 643                                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
 644                                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
 645                                 case 0x1b6: map_key_clear(KEY_MEDIA);           break;
 646                                 case 0x1b7: map_key_clear(KEY_SOUND);           break;
 647                                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
 648                                 case 0x1bd: map_key_clear(KEY_INFO);            break;
 649                                 case 0x201: map_key_clear(KEY_NEW);             break;
 650                                 case 0x202: map_key_clear(KEY_OPEN);            break;
 651                                 case 0x203: map_key_clear(KEY_CLOSE);           break;
 652                                 case 0x204: map_key_clear(KEY_EXIT);            break;
 653                                 case 0x207: map_key_clear(KEY_SAVE);            break;
 654                                 case 0x208: map_key_clear(KEY_PRINT);           break;
 655                                 case 0x209: map_key_clear(KEY_PROPS);           break;
 656                                 case 0x21a: map_key_clear(KEY_UNDO);            break;
 657                                 case 0x21b: map_key_clear(KEY_COPY);            break;
 658                                 case 0x21c: map_key_clear(KEY_CUT);             break;
 659                                 case 0x21d: map_key_clear(KEY_PASTE);           break;
 660                                 case 0x21f: map_key_clear(KEY_FIND);            break;
 661                                 case 0x221: map_key_clear(KEY_SEARCH);          break;
 662                                 case 0x222: map_key_clear(KEY_GOTO);            break;
 663                                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
 664                                 case 0x224: map_key_clear(KEY_BACK);            break;
 665                                 case 0x225: map_key_clear(KEY_FORWARD);         break;
 666                                 case 0x226: map_key_clear(KEY_STOP);            break;
 667                                 case 0x227: map_key_clear(KEY_REFRESH);         break;
 668                                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
 669                                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
 670                                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
 671                                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
 672                                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
 673                                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
 674                                 case 0x238: map_rel(REL_HWHEEL);                break;
 675                                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
 676                                 case 0x279: map_key_clear(KEY_REDO);            break;
 677
 678                                 case 0x289: map_key_clear(KEY_REPLY);           break;
 679                                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
 680                                 case 0x28c: map_key_clear(KEY_SEND);            break;
 681
 682                                 default:    goto ignore;
 683                         }
 684                         break;
 685
 686                 case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 687
 688                         set_bit(EV_REP, input->evbit);
 689                         switch (usage->hid & HID_USAGE) {
 690                                 case 0x021: map_key_clear(KEY_PRINT);           break;
 691                                 case 0x070: map_key_clear(KEY_HP);              break;
 692                                 case 0x071: map_key_clear(KEY_CAMERA);          break;
 693                                 case 0x072: map_key_clear(KEY_SOUND);           break;
 694                                 case 0x073: map_key_clear(KEY_QUESTION);        break;
 695                                 case 0x080: map_key_clear(KEY_EMAIL);           break;
 696                                 case 0x081: map_key_clear(KEY_CHAT);            break;
 697                                 case 0x082: map_key_clear(KEY_SEARCH);          break;
 698                                 case 0x083: map_key_clear(KEY_CONNECT);         break;
 699                                 case 0x084: map_key_clear(KEY_FINANCE);         break;
 700                                 case 0x085: map_key_clear(KEY_SPORT);           break;
 701                                 case 0x086: map_key_clear(KEY_SHOP);            break;
 702                                 default:    goto ignore;
 703                         }
 704                         break;
 705
 706                 case HID_UP_MSVENDOR:
 707
 708                         goto ignore;
 709
 710                 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
 711
 712                         set_bit(EV_REP, input->evbit);
 713                         switch(usage->hid & HID_USAGE) {
 714                                 case 0x003:
 715                                         /* The fn key on Apple USB keyboards */
 716                                         map_key_clear(KEY_FN);
 717                                         hidinput_apple_setup(input);
 718                                         break;
 719
 720                                 default:    goto ignore;
 721                         }
 722                         break;
 723
 724                 case HID_UP_LOGIVENDOR:
 725
 726                         goto ignore;
 727
 728                 case HID_UP_PID:
 729
 730                         switch(usage->hid & HID_USAGE) {
 731                                 case 0xa4: map_key_clear(BTN_DEAD);     break;
 732                                 default: goto ignore;
 733                         }
 734                         break;
 735
 736                 default:
 737                 unknown:
 738                         if (field->report_size == 1) {
 739                                 if (field->report->type == HID_OUTPUT_REPORT) {
 740                                         map_led(LED_MISC);
 741                                         break;
 742                                 }
 743                                 map_key(BTN_MISC);
 744                                 break;
 745                         }
 746                         if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 747                                 map_rel(REL_MISC);
 748                                 break;
 749                         }
 750                         map_abs(ABS_MISC);
 751                         break;
 752         }
 753
 754 mapped:
 755         if (device->quirks & HID_QUIRK_MIGHTYMOUSE) {
 756                 if (usage->hid == HID_GD_Z)
 757                         map_rel(REL_HWHEEL);
 758                 else if (usage->code == BTN_1)
 759                         map_key(BTN_2);
 760                 else if (usage->code == BTN_2)
 761                         map_key(BTN_1);
 762         }
 763
 764         if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5 |
 765                         HID_QUIRK_2WHEEL_MOUSE_HACK_B8)) && (usage->type == EV_REL) &&
 766                         (usage->code == REL_WHEEL))
 767                 set_bit(REL_HWHEEL, bit);
 768
 769         if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
 770                 || ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
 771                 goto ignore;
 772
 773         if ((device->quirks & HID_QUIRK_BAD_RELATIVE_KEYS) &&
 774                 usage->type == EV_KEY && (field->flags & HID_MAIN_ITEM_RELATIVE))
 775                 field->flags &= ~HID_MAIN_ITEM_RELATIVE;
 776
 777         set_bit(usage->type, input->evbit);
 778
 779         if (device->quirks & HID_QUIRK_DUPLICATE_USAGES &&
 780                         (usage->type == EV_KEY ||
 781                          usage->type == EV_REL ||
 782                          usage->type == EV_ABS))
 783                 clear_bit(usage->code, bit);
 784
 785         while (usage->code <= max && test_and_set_bit(usage->code, bit))
 786                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 787
 788         if (usage->code > max)
 789                 goto ignore;
 790
 791
 792         if (usage->type == EV_ABS) {
 793
 794                 int a = field->logical_minimum;
 795                 int b = field->logical_maximum;
 796
 797                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 798                         a = field->logical_minimum = 0;
 799                         b = field->logical_maximum = 255;
 800                 }
 801
 802                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
 803                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 804                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
 805
 806         }
 807
 808         if (usage->type == EV_ABS &&
 809             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
 810                 int i;
 811                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 812                         input_set_abs_params(input, i, -1, 1, 0, 0);
 813                         set_bit(i, input->absbit);
 814                 }
 815                 if (usage->hat_dir && !field->dpad)
 816                         field->dpad = usage->code;
 817         }
 818
 819         /* for those devices which produce Consumer volume usage as relative,
 820          * we emulate pressing volumeup/volumedown appropriate number of times
 821          * in hidinput_hid_event()
 822          */
 823         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 824                         (usage->code == ABS_VOLUME)) {
 825                 set_bit(KEY_VOLUMEUP, input->keybit);
 826                 set_bit(KEY_VOLUMEDOWN, input->keybit);
 827         }
 828
 829         if (usage->type == EV_KEY) {
 830                 set_bit(EV_MSC, input->evbit);
 831                 set_bit(MSC_SCAN, input->mscbit);
 832         }
 833
 834         hid_resolv_event(usage->type, usage->code);
 835
 836         dbg_hid_line("\n");
 837
 838         return;
 839
 840 ignore:
 841         dbg_hid_line("IGNORED\n");
 842         return;
 843 }
 844
 845 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
 846 {
 847         struct input_dev *input;
 848         unsigned *quirks = &hid->quirks;
 849
 850         if (!field->hidinput)
 851                 return;
 852
 853         input = field->hidinput->input;
 854
 855         if (!usage->type)
 856                 return;
 857
 858         /* handle input events for quirky devices */
 859         if (hidinput_event_quirks(hid, field, usage, value))
 860                 return;
 861
 862         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
 863                 int hat_dir = usage->hat_dir;
 864                 if (!hat_dir)
 865                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 866                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
 867                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
 868                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
 869                 return;
 870         }
 871
 872         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 873                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
 874                 return;
 875         }
 876
 877         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
 878                 if (value) {
 879                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
 880                         return;
 881                 }
 882                 input_event(input, usage->type, usage->code, 0);
 883                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
 884                 return;
 885         }
 886
 887         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
 888                 int a = field->logical_minimum;
 889                 int b = field->logical_maximum;
 890                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
 891         }
 892
 893         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
 894                 dbg_hid("Maximum Effects - %d\n",value);
 895                 return;
 896         }
 897
 898         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
 899                 dbg_hid("PID Pool Report\n");
 900                 return;
 901         }
 902
 903         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
 904                 return;
 905
 906         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 907                         (usage->code == ABS_VOLUME)) {
 908                 int count = abs(value);
 909                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
 910                 int i;
 911
 912                 for (i = 0; i < count; i++) {
 913                         input_event(input, EV_KEY, direction, 1);
 914                         input_sync(input);
 915                         input_event(input, EV_KEY, direction, 0);
 916                         input_sync(input);
 917                 }
 918                 return;
 919         }
 920
 921         /* report the usage code as scancode if the key status has changed */
 922         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
 923                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
 924
 925         input_event(input, usage->type, usage->code, value);
 926
 927         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
 928                 input_event(input, usage->type, usage->code, 0);
 929 }
 930
 931 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
 932 {
 933         struct hid_input *hidinput;
 934
 935         list_for_each_entry(hidinput, &hid->inputs, list)
 936                 input_sync(hidinput->input);
 937 }
 938 EXPORT_SYMBOL_GPL(hidinput_report_event);
 939
 940 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
 941 {
 942         struct hid_report *report;
 943         int i, j;
 944
 945         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
 946                 for (i = 0; i < report->maxfield; i++) {
 947                         *field = report->field[i];
 948                         for (j = 0; j < (*field)->maxusage; j++)
 949                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
 950                                         return j;
 951                 }
 952         }
 953         return -1;
 954 }
 955 EXPORT_SYMBOL_GPL(hidinput_find_field);
 956
 957 static int hidinput_open(struct input_dev *dev)
 958 {
 959         struct hid_device *hid = input_get_drvdata(dev);
 960
 961         return hid->hid_open(hid);
 962 }
 963
 964 static void hidinput_close(struct input_dev *dev)
 965 {
 966         struct hid_device *hid = input_get_drvdata(dev);
 967
 968         hid->hid_close(hid);
 969 }
 970
 971 /*
 972  * Register the input device; print a message.
 973  * Configure the input layer interface
 974  * Read all reports and initialize the absolute field values.
 975  */
 976
 977 int hidinput_connect(struct hid_device *hid)
 978 {
 979         struct hid_report *report;
 980         struct hid_input *hidinput = NULL;
 981         struct input_dev *input_dev;
 982         int i, j, k;
 983         int max_report_type = HID_OUTPUT_REPORT;
 984
 985         if (hid->quirks & HID_QUIRK_IGNORE_HIDINPUT)
 986                 return -1;
 987
 988         INIT_LIST_HEAD(&hid->inputs);
 989
 990         for (i = 0; i < hid->maxcollection; i++)
 991                 if (hid->collection[i].type == HID_COLLECTION_APPLICATION ||
 992                     hid->collection[i].type == HID_COLLECTION_PHYSICAL)
 993                         if (IS_INPUT_APPLICATION(hid->collection[i].usage))
 994                                 break;
 995
 996         if (i == hid->maxcollection && (hid->quirks & HID_QUIRK_HIDINPUT) == 0)
 997                 return -1;
 998
 999         if (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1000                 max_report_type = HID_INPUT_REPORT;
1001
1002         for (k = HID_INPUT_REPORT; k <= max_report_type; k++)
1003                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1004
1005                         if (!report->maxfield)
1006                                 continue;
1007
1008                         if (!hidinput) {
1009                                 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1010                                 input_dev = input_allocate_device();
1011                                 if (!hidinput || !input_dev) {
1012                                         kfree(hidinput);
1013                                         input_free_device(input_dev);
1014                                         err_hid("Out of memory during hid input probe");
1015                                         goto out_unwind;
1016                                 }
1017
1018                                 input_set_drvdata(input_dev, hid);
1019                                 input_dev->event = hid->hidinput_input_event;
1020                                 input_dev->open = hidinput_open;
1021                                 input_dev->close = hidinput_close;
1022                                 input_dev->setkeycode = hidinput_setkeycode;
1023                                 input_dev->getkeycode = hidinput_getkeycode;
1024
1025                                 input_dev->name = hid->name;
1026                                 input_dev->phys = hid->phys;
1027                                 input_dev->uniq = hid->uniq;
1028                                 input_dev->id.bustype = hid->bus;
1029                                 input_dev->id.vendor  = hid->vendor;
1030                                 input_dev->id.product = hid->product;
1031                                 input_dev->id.version = hid->version;
1032                                 input_dev->dev.parent = hid->dev;
1033                                 hidinput->input = input_dev;
1034                                 list_add_tail(&hidinput->list, &hid->inputs);
1035                         }
1036
1037                         for (i = 0; i < report->maxfield; i++)
1038                                 for (j = 0; j < report->field[i]->maxusage; j++)
1039                                         hidinput_configure_usage(hidinput, report->field[i],
1040                                                                  report->field[i]->usage + j);
1041
1042                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1043                                 /* This will leave hidinput NULL, so that it
1044                                  * allocates another one if we have more inputs on
1045                                  * the same interface. Some devices (e.g. Happ's
1046                                  * UGCI) cram a lot of unrelated inputs into the
1047                                  * same interface. */
1048                                 hidinput->report = report;
1049                                 if (input_register_device(hidinput->input))
1050                                         goto out_cleanup;
1051                                 hidinput = NULL;
1052                         }
1053                 }
1054
1055         if (hidinput && input_register_device(hidinput->input))
1056                 goto out_cleanup;
1057
1058         return 0;
1059
1060 out_cleanup:
1061         input_free_device(hidinput->input);
1062         kfree(hidinput);
1063 out_unwind:
1064         /* unwind the ones we already registered */
1065         hidinput_disconnect(hid);
1066
1067         return -1;
1068 }
1069 EXPORT_SYMBOL_GPL(hidinput_connect);
1070
1071 void hidinput_disconnect(struct hid_device *hid)
1072 {
1073         struct hid_input *hidinput, *next;
1074
1075         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1076                 list_del(&hidinput->list);
1077                 input_unregister_device(hidinput->input);
1078                 kfree(hidinput);
1079         }
1080 }
1081 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1082