drivers/hid/hid-input.c

   1 /*
   2  * $Id: hid-input.c,v 1.2 2002/04/23 00:59:25 rdamazio Exp $
   3  *
   4  *  Copyright (c) 2000-2001 Vojtech Pavlik
   5  *  Copyright (c) 2006-2007 Jiri Kosina
   6  *
   7  *  HID to Linux Input mapping
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  24  *
  25  * Should you need to contact me, the author, you can do so either by
  26  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  27  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  28  */
  29
  30 #include <linux/module.h>
  31 #include <linux/slab.h>
  32 #include <linux/kernel.h>
  33
  34 #include <linux/hid.h>
  35 #include <linux/hid-debug.h>
  36
  37 static int hid_apple_fnmode = 1;
  38 module_param_named(pb_fnmode, hid_apple_fnmode, int, 0644);
  39 MODULE_PARM_DESC(pb_fnmode,
  40                 "Mode of fn key on Apple keyboards (0 = disabled, 1 = fkeyslast, 2 = fkeysfirst)");
  41
  42 #define unk     KEY_UNKNOWN
  43
  44 static const unsigned char hid_keyboard[256] = {
  45           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  46          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  47           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  48          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  49          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  50         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  51          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  52         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  53         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  54         122,123, 90, 91, 85,unk,unk,unk,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,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
  57         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  58         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  59          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  60         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  61 };
  62
  63 /* extended mapping for certain Logitech hardware (Logitech cordless desktop LX500) */
  64 #define LOGITECH_EXPANDED_KEYMAP_SIZE 80
  65 static int logitech_expanded_keymap[LOGITECH_EXPANDED_KEYMAP_SIZE] = {
  66           0,216,  0,213,175,156,  0,  0,  0,  0,
  67         144,  0,  0,  0,  0,  0,  0,  0,  0,212,
  68         174,167,152,161,112,  0,  0,  0,154,  0,
  69           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  70           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  71           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  72           0,  0,  0,  0,  0,183,184,185,186,187,
  73         188,189,190,191,192,193,194,  0,  0,  0
  74 };
  75
  76 static const struct {
  77         __s32 x;
  78         __s32 y;
  79 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  80
  81 #define map_abs(c)      do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0)
  82 #define map_rel(c)      do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
  83 #define map_key(c)      do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
  84 #define map_led(c)      do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
  85
  86 #define map_abs_clear(c)        do { map_abs(c); clear_bit(c, bit); } while (0)
  87 #define map_key_clear(c)        do { map_key(c); clear_bit(c, bit); } while (0)
  88
  89 #ifdef CONFIG_USB_HIDINPUT_POWERBOOK
  90
  91 struct hidinput_key_translation {
  92         u16 from;
  93         u16 to;
  94         u8 flags;
  95 };
  96
  97 #define APPLE_FLAG_FKEY 0x01
  98
  99 static struct hidinput_key_translation apple_fn_keys[] = {
 100         { KEY_BACKSPACE, KEY_DELETE },
 101         { KEY_F1,       KEY_BRIGHTNESSDOWN,     APPLE_FLAG_FKEY },
 102         { KEY_F2,       KEY_BRIGHTNESSUP,       APPLE_FLAG_FKEY },
 103         { KEY_F3,       KEY_CYCLEWINDOWS,       APPLE_FLAG_FKEY }, /* Exposé */
 104         { KEY_F4,       KEY_FN_F4,              APPLE_FLAG_FKEY }, /* Dashboard */
 105         { KEY_F5,       KEY_FN_F5 },
 106         { KEY_F6,       KEY_FN_F6 },
 107         { KEY_F7,       KEY_BACK,               APPLE_FLAG_FKEY },
 108         { KEY_F8,       KEY_PLAYPAUSE,          APPLE_FLAG_FKEY },
 109         { KEY_F9,       KEY_FORWARD,            APPLE_FLAG_FKEY },
 110         { KEY_F10,      KEY_MUTE,               APPLE_FLAG_FKEY },
 111         { KEY_F11,      KEY_VOLUMEDOWN,         APPLE_FLAG_FKEY },
 112         { KEY_F12,      KEY_VOLUMEUP,           APPLE_FLAG_FKEY },
 113         { KEY_UP,       KEY_PAGEUP },
 114         { KEY_DOWN,     KEY_PAGEDOWN },
 115         { KEY_LEFT,     KEY_HOME },
 116         { KEY_RIGHT,    KEY_END },
 117         { }
 118 };
 119
 120 static struct hidinput_key_translation powerbook_fn_keys[] = {
 121         { KEY_BACKSPACE, KEY_DELETE },
 122         { KEY_F1,       KEY_BRIGHTNESSDOWN,     APPLE_FLAG_FKEY },
 123         { KEY_F2,       KEY_BRIGHTNESSUP,       APPLE_FLAG_FKEY },
 124         { KEY_F3,       KEY_MUTE,               APPLE_FLAG_FKEY },
 125         { KEY_F4,       KEY_VOLUMEDOWN,         APPLE_FLAG_FKEY },
 126         { KEY_F5,       KEY_VOLUMEUP,           APPLE_FLAG_FKEY },
 127         { KEY_F6,       KEY_NUMLOCK,            APPLE_FLAG_FKEY },
 128         { KEY_F7,       KEY_SWITCHVIDEOMODE,    APPLE_FLAG_FKEY },
 129         { KEY_F8,       KEY_KBDILLUMTOGGLE,     APPLE_FLAG_FKEY },
 130         { KEY_F9,       KEY_KBDILLUMDOWN,       APPLE_FLAG_FKEY },
 131         { KEY_F10,      KEY_KBDILLUMUP,         APPLE_FLAG_FKEY },
 132         { KEY_UP,       KEY_PAGEUP },
 133         { KEY_DOWN,     KEY_PAGEDOWN },
 134         { KEY_LEFT,     KEY_HOME },
 135         { KEY_RIGHT,    KEY_END },
 136         { }
 137 };
 138
 139 static struct hidinput_key_translation powerbook_numlock_keys[] = {
 140         { KEY_J,        KEY_KP1 },
 141         { KEY_K,        KEY_KP2 },
 142         { KEY_L,        KEY_KP3 },
 143         { KEY_U,        KEY_KP4 },
 144         { KEY_I,        KEY_KP5 },
 145         { KEY_O,        KEY_KP6 },
 146         { KEY_7,        KEY_KP7 },
 147         { KEY_8,        KEY_KP8 },
 148         { KEY_9,        KEY_KP9 },
 149         { KEY_M,        KEY_KP0 },
 150         { KEY_DOT,      KEY_KPDOT },
 151         { KEY_SLASH,    KEY_KPPLUS },
 152         { KEY_SEMICOLON, KEY_KPMINUS },
 153         { KEY_P,        KEY_KPASTERISK },
 154         { KEY_MINUS,    KEY_KPEQUAL },
 155         { KEY_0,        KEY_KPSLASH },
 156         { KEY_F6,       KEY_NUMLOCK },
 157         { KEY_KPENTER,  KEY_KPENTER },
 158         { KEY_BACKSPACE, KEY_BACKSPACE },
 159         { }
 160 };
 161
 162 static struct hidinput_key_translation apple_iso_keyboard[] = {
 163         { KEY_GRAVE,    KEY_102ND },
 164         { KEY_102ND,    KEY_GRAVE },
 165         { }
 166 };
 167
 168 static struct hidinput_key_translation *find_translation(struct hidinput_key_translation *table, u16 from)
 169 {
 170         struct hidinput_key_translation *trans;
 171
 172         /* Look for the translation */
 173         for (trans = table; trans->from; trans++)
 174                 if (trans->from == from)
 175                         return trans;
 176
 177         return NULL;
 178 }
 179
 180 int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
 181                 struct hid_usage *usage, __s32 value)
 182 {
 183         struct hidinput_key_translation *trans;
 184
 185         if (usage->code == KEY_FN) {
 186                 if (value) hid->quirks |=  HID_QUIRK_APPLE_FN_ON;
 187                 else       hid->quirks &= ~HID_QUIRK_APPLE_FN_ON;
 188
 189                 input_event(input, usage->type, usage->code, value);
 190
 191                 return 1;
 192         }
 193
 194         if (hid_apple_fnmode) {
 195                 int do_translate;
 196
 197                 trans = find_translation((hid->product < 0x220 ||
 198                                           hid->product >= 0x300) ?
 199                                          powerbook_fn_keys : apple_fn_keys,
 200                                          usage->code);
 201                 if (trans) {
 202                         if (test_bit(usage->code, hid->apple_pressed_fn))
 203                                 do_translate = 1;
 204                         else if (trans->flags & APPLE_FLAG_FKEY)
 205                                 do_translate =
 206                                         (hid_apple_fnmode == 2 &&  (hid->quirks & HID_QUIRK_APPLE_FN_ON)) ||
 207                                         (hid_apple_fnmode == 1 && !(hid->quirks & HID_QUIRK_APPLE_FN_ON));
 208                         else
 209                                 do_translate = (hid->quirks & HID_QUIRK_APPLE_FN_ON);
 210
 211                         if (do_translate) {
 212                                 if (value)
 213                                         set_bit(usage->code, hid->apple_pressed_fn);
 214                                 else
 215                                         clear_bit(usage->code, hid->apple_pressed_fn);
 216
 217                                 input_event(input, usage->type, trans->to, value);
 218
 219                                 return 1;
 220                         }
 221                 }
 222
 223                 if (test_bit(usage->code, hid->pb_pressed_numlock) ||
 224                                 test_bit(LED_NUML, input->led)) {
 225                         trans = find_translation(powerbook_numlock_keys, usage->code);
 226
 227                         if (trans) {
 228                                 if (value)
 229                                         set_bit(usage->code, hid->pb_pressed_numlock);
 230                                 else
 231                                         clear_bit(usage->code, hid->pb_pressed_numlock);
 232
 233                                 input_event(input, usage->type, trans->to, value);
 234                         }
 235
 236                         return 1;
 237                 }
 238         }
 239
 240         if (hid->quirks & HID_QUIRK_APPLE_ISO_KEYBOARD) {
 241                 trans = find_translation(apple_iso_keyboard, usage->code);
 242                 if (trans) {
 243                         input_event(input, usage->type, trans->to, value);
 244                         return 1;
 245                 }
 246         }
 247
 248         return 0;
 249 }
 250
 251 static void hidinput_apple_setup(struct input_dev *input)
 252 {
 253         struct hidinput_key_translation *trans;
 254
 255         set_bit(KEY_NUMLOCK, input->keybit);
 256
 257         /* Enable all needed keys */
 258         for (trans = apple_fn_keys; trans->from; trans++)
 259                 set_bit(trans->to, input->keybit);
 260
 261         for (trans = powerbook_fn_keys; trans->from; trans++)
 262                 set_bit(trans->to, input->keybit);
 263
 264         for (trans = powerbook_numlock_keys; trans->from; trans++)
 265                 set_bit(trans->to, input->keybit);
 266
 267         for (trans = apple_iso_keyboard; trans->from; trans++)
 268                 set_bit(trans->to, input->keybit);
 269
 270 }
 271 #else
 272 inline int hidinput_apple_event(struct hid_device *hid,
 273                                        struct input_dev *input,
 274                                        struct hid_usage *usage, __s32 value)
 275 {
 276         return 0;
 277 }
 278
 279 static inline void hidinput_apple_setup(struct input_dev *input)
 280 {
 281 }
 282 #endif
 283
 284 static inline int match_scancode(int code, int scancode)
 285 {
 286         if (scancode == 0)
 287                 return 1;
 288         return ((code & (HID_USAGE_PAGE | HID_USAGE)) == scancode);
 289 }
 290
 291 static inline int match_keycode(int code, int keycode)
 292 {
 293         if (keycode == 0)
 294                 return 1;
 295         return (code == keycode);
 296 }
 297
 298 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
 299                 int scancode, int keycode)
 300 {
 301         int i, j, k;
 302         struct hid_report *report;
 303         struct hid_usage *usage;
 304
 305         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
 306                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 307                         for (i = 0; i < report->maxfield; i++) {
 308                                 for ( j = 0; j < report->field[i]->maxusage; j++) {
 309                                         usage = report->field[i]->usage + j;
 310                                         if (usage->type == EV_KEY &&
 311                                                 match_scancode(usage->hid, scancode) &&
 312                                                 match_keycode(usage->code, keycode))
 313                                                 return usage;
 314                                 }
 315                         }
 316                 }
 317         }
 318         return NULL;
 319 }
 320
 321 static int hidinput_getkeycode(struct input_dev *dev, int scancode,
 322                                 int *keycode)
 323 {
 324         struct hid_device *hid = input_get_drvdata(dev);
 325         struct hid_usage *usage;
 326
 327         usage = hidinput_find_key(hid, scancode, 0);
 328         if (usage) {
 329                 *keycode = usage->code;
 330                 return 0;
 331         }
 332         return -EINVAL;
 333 }
 334
 335 static int hidinput_setkeycode(struct input_dev *dev, int scancode,
 336                                 int keycode)
 337 {
 338         struct hid_device *hid = input_get_drvdata(dev);
 339         struct hid_usage *usage;
 340         int old_keycode;
 341
 342         if (keycode < 0 || keycode > KEY_MAX)
 343                 return -EINVAL;
 344
 345         usage = hidinput_find_key(hid, scancode, 0);
 346         if (usage) {
 347                 old_keycode = usage->code;
 348                 usage->code = keycode;
 349
 350                 clear_bit(old_keycode, dev->keybit);
 351                 set_bit(usage->code, dev->keybit);
 352                 dbg_hid(KERN_DEBUG "Assigned keycode %d to HID usage code %x\n", keycode, scancode);
 353                 /* Set the keybit for the old keycode if the old keycode is used
 354                  * by another key */
 355                 if (hidinput_find_key (hid, 0, old_keycode))
 356                         set_bit(old_keycode, dev->keybit);
 357
 358                 return 0;
 359         }
 360
 361         return -EINVAL;
 362 }
 363
 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, ret;
 371         unsigned long *bit = NULL;
 372
 373         field->hidinput = hidinput;
 374
 375         dbg_hid("Mapping: ");
 376         hid_resolv_usage(usage->hid);
 377         dbg_hid_line(" ---> ");
 378
 379         if (field->flags & HID_MAIN_ITEM_CONSTANT)
 380                 goto ignore;
 381
 382         /* only LED usages are supported in output fields */
 383         if (field->report_type == HID_OUTPUT_REPORT &&
 384                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
 385                 dbg_hid_line(" [non-LED output field] ");
 386                 goto ignore;
 387         }
 388
 389         /* handle input mappings for quirky devices */
 390         ret = hidinput_mapping_quirks(usage, input, &bit, &max);
 391         if (ret)
 392                 goto mapped;
 393
 394         switch (usage->hid & HID_USAGE_PAGE) {
 395
 396                 case HID_UP_UNDEFINED:
 397                         goto ignore;
 398
 399                 case HID_UP_KEYBOARD:
 400
 401                         set_bit(EV_REP, input->evbit);
 402
 403                         if ((usage->hid & HID_USAGE) < 256) {
 404                                 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
 405                                 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
 406                         } else
 407                                 map_key(KEY_UNKNOWN);
 408
 409                         break;
 410
 411                 case HID_UP_BUTTON:
 412
 413                         code = ((usage->hid - 1) & 0xf);
 414
 415                         switch (field->application) {
 416                                 case HID_GD_MOUSE:
 417                                 case HID_GD_POINTER:  code += 0x110; break;
 418                                 case HID_GD_JOYSTICK: code += 0x120; break;
 419                                 case HID_GD_GAMEPAD:  code += 0x130; break;
 420                                 default:
 421                                         switch (field->physical) {
 422                                                 case HID_GD_MOUSE:
 423                                                 case HID_GD_POINTER:  code += 0x110; break;
 424                                                 case HID_GD_JOYSTICK: code += 0x120; break;
 425                                                 case HID_GD_GAMEPAD:  code += 0x130; break;
 426                                                 default:              code += 0x100;
 427                                         }
 428                         }
 429
 430                         /* Special handling for Logitech Cordless Desktop */
 431                         if (field->application != HID_GD_MOUSE) {
 432                                 if (device->quirks & HID_QUIRK_LOGITECH_EXPANDED_KEYMAP) {
 433                                         int hid = usage->hid & HID_USAGE;
 434                                         if (hid < LOGITECH_EXPANDED_KEYMAP_SIZE && logitech_expanded_keymap[hid] != 0)
 435                                                 code = logitech_expanded_keymap[hid];
 436                                 }
 437                         } else {
 438                                 if (device->quirks & HID_QUIRK_LOGITECH_IGNORE_DOUBLED_WHEEL) {
 439                                         int hid = usage->hid & HID_USAGE;
 440                                         if (hid == 7 || hid == 8)
 441                                                 goto ignore;
 442                                 }
 443                         }
 444
 445                         map_key(code);
 446                         break;
 447
 448
 449                 case HID_UP_SIMULATION:
 450
 451                         switch (usage->hid & 0xffff) {
 452                                 case 0xba: map_abs(ABS_RUDDER);   break;
 453                                 case 0xbb: map_abs(ABS_THROTTLE); break;
 454                                 case 0xc4: map_abs(ABS_GAS);      break;
 455                                 case 0xc5: map_abs(ABS_BRAKE);    break;
 456                                 case 0xc8: map_abs(ABS_WHEEL);    break;
 457                                 default:   goto ignore;
 458                         }
 459                         break;
 460
 461                 case HID_UP_GENDESK:
 462
 463                         if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 464                                 switch (usage->hid & 0xf) {
 465                                         case 0x1: map_key_clear(KEY_POWER);  break;
 466                                         case 0x2: map_key_clear(KEY_SLEEP);  break;
 467                                         case 0x3: map_key_clear(KEY_WAKEUP); break;
 468                                         default: goto unknown;
 469                                 }
 470                                 break;
 471                         }
 472
 473                         if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
 474                                 switch (usage->hid) {
 475                                         case HID_GD_UP:    usage->hat_dir = 1; break;
 476                                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
 477                                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
 478                                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
 479                                         default: goto unknown;
 480                                 }
 481                                 if (field->dpad) {
 482                                         map_abs(field->dpad);
 483                                         goto ignore;
 484                                 }
 485                                 map_abs(ABS_HAT0X);
 486                                 break;
 487                         }
 488
 489                         switch (usage->hid) {
 490
 491                                 /* These usage IDs map directly to the usage codes. */
 492                                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
 493                                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
 494                                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
 495                                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
 496                                                 map_rel(usage->hid & 0xf);
 497                                         else
 498                                                 map_abs(usage->hid & 0xf);
 499                                         break;
 500
 501                                 case HID_GD_HATSWITCH:
 502                                         usage->hat_min = field->logical_minimum;
 503                                         usage->hat_max = field->logical_maximum;
 504                                         map_abs(ABS_HAT0X);
 505                                         break;
 506
 507                                 case HID_GD_START:      map_key_clear(BTN_START);       break;
 508                                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 509
 510                                 default: goto unknown;
 511                         }
 512
 513                         break;
 514
 515                 case HID_UP_LED:
 516
 517                         switch (usage->hid & 0xffff) {                        /* HID-Value:                   */
 518                                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
 519                                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
 520                                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
 521                                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
 522                                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
 523                                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
 524                                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
 525                                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
 526                                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
 527                                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
 528                                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
 529
 530                                 default: goto ignore;
 531                         }
 532                         break;
 533
 534                 case HID_UP_DIGITIZER:
 535
 536                         switch (usage->hid & 0xff) {
 537
 538                                 case 0x30: /* TipPressure */
 539                                         if (!test_bit(BTN_TOUCH, input->keybit)) {
 540                                                 device->quirks |= HID_QUIRK_NOTOUCH;
 541                                                 set_bit(EV_KEY, input->evbit);
 542                                                 set_bit(BTN_TOUCH, input->keybit);
 543                                         }
 544
 545                                         map_abs_clear(ABS_PRESSURE);
 546                                         break;
 547
 548                                 case 0x32: /* InRange */
 549                                         switch (field->physical & 0xff) {
 550                                                 case 0x21: map_key(BTN_TOOL_MOUSE); break;
 551                                                 case 0x22: map_key(BTN_TOOL_FINGER); break;
 552                                                 default: map_key(BTN_TOOL_PEN); break;
 553                                         }
 554                                         break;
 555
 556                                 case 0x3c: /* Invert */
 557                                         map_key_clear(BTN_TOOL_RUBBER);
 558                                         break;
 559
 560                                 case 0x33: /* Touch */
 561                                 case 0x42: /* TipSwitch */
 562                                 case 0x43: /* TipSwitch2 */
 563                                         device->quirks &= ~HID_QUIRK_NOTOUCH;
 564                                         map_key_clear(BTN_TOUCH);
 565                                         break;
 566
 567                                 case 0x44: /* BarrelSwitch */
 568                                         map_key_clear(BTN_STYLUS);
 569                                         break;
 570
 571                                 default:  goto unknown;
 572                         }
 573                         break;
 574
 575                 case HID_UP_CONSUMER:   /* USB HUT v1.1, pages 56-62 */
 576
 577                         switch (usage->hid & HID_USAGE) {
 578                                 case 0x000: goto ignore;
 579                                 case 0x034: map_key_clear(KEY_SLEEP);           break;
 580                                 case 0x036: map_key_clear(BTN_MISC);            break;
 581
 582                                 case 0x040: map_key_clear(KEY_MENU);            break;
 583                                 case 0x045: map_key_clear(KEY_RADIO);           break;
 584
 585                                 case 0x083: map_key_clear(KEY_LAST);            break;
 586                                 case 0x088: map_key_clear(KEY_PC);              break;
 587                                 case 0x089: map_key_clear(KEY_TV);              break;
 588                                 case 0x08a: map_key_clear(KEY_WWW);             break;
 589                                 case 0x08b: map_key_clear(KEY_DVD);             break;
 590                                 case 0x08c: map_key_clear(KEY_PHONE);           break;
 591                                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
 592                                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
 593                                 case 0x08f: map_key_clear(KEY_GAMES);           break;
 594                                 case 0x090: map_key_clear(KEY_MEMO);            break;
 595                                 case 0x091: map_key_clear(KEY_CD);              break;
 596                                 case 0x092: map_key_clear(KEY_VCR);             break;
 597                                 case 0x093: map_key_clear(KEY_TUNER);           break;
 598                                 case 0x094: map_key_clear(KEY_EXIT);            break;
 599                                 case 0x095: map_key_clear(KEY_HELP);            break;
 600                                 case 0x096: map_key_clear(KEY_TAPE);            break;
 601                                 case 0x097: map_key_clear(KEY_TV2);             break;
 602                                 case 0x098: map_key_clear(KEY_SAT);             break;
 603                                 case 0x09a: map_key_clear(KEY_PVR);             break;
 604
 605                                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
 606                                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
 607                                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
 608
 609                                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
 610                                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
 611                                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
 612                                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
 613                                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
 614                                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
 615                                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
 616                                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
 617                                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
 618
 619                                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
 620                                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
 621                                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
 622                                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
 623                                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
 624                                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
 625
 626                                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
 627                                 case 0x183: map_key_clear(KEY_CONFIG);          break;
 628                                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
 629                                 case 0x185: map_key_clear(KEY_EDITOR);          break;
 630                                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
 631                                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
 632                                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
 633                                 case 0x189: map_key_clear(KEY_DATABASE);        break;
 634                                 case 0x18a: map_key_clear(KEY_MAIL);            break;
 635                                 case 0x18b: map_key_clear(KEY_NEWS);            break;
 636                                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
 637                                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
 638                                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
 639                                 case 0x191: map_key_clear(KEY_FINANCE);         break;
 640                                 case 0x192: map_key_clear(KEY_CALC);            break;
 641                                 case 0x194: map_key_clear(KEY_FILE);            break;
 642                                 case 0x196: map_key_clear(KEY_WWW);             break;
 643                                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
 644                                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
 645                                 case 0x1a6: map_key_clear(KEY_HELP);            break;
 646                                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
 647                                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
 648                                 case 0x1b6: map_key_clear(KEY_MEDIA);           break;
 649                                 case 0x1b7: map_key_clear(KEY_SOUND);           break;
 650                                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
 651                                 case 0x1bd: map_key_clear(KEY_INFO);            break;
 652                                 case 0x201: map_key_clear(KEY_NEW);             break;
 653                                 case 0x202: map_key_clear(KEY_OPEN);            break;
 654                                 case 0x203: map_key_clear(KEY_CLOSE);           break;
 655                                 case 0x204: map_key_clear(KEY_EXIT);            break;
 656                                 case 0x207: map_key_clear(KEY_SAVE);            break;
 657                                 case 0x208: map_key_clear(KEY_PRINT);           break;
 658                                 case 0x209: map_key_clear(KEY_PROPS);           break;
 659                                 case 0x21a: map_key_clear(KEY_UNDO);            break;
 660                                 case 0x21b: map_key_clear(KEY_COPY);            break;
 661                                 case 0x21c: map_key_clear(KEY_CUT);             break;
 662                                 case 0x21d: map_key_clear(KEY_PASTE);           break;
 663                                 case 0x21f: map_key_clear(KEY_FIND);            break;
 664                                 case 0x221: map_key_clear(KEY_SEARCH);          break;
 665                                 case 0x222: map_key_clear(KEY_GOTO);            break;
 666                                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
 667                                 case 0x224: map_key_clear(KEY_BACK);            break;
 668                                 case 0x225: map_key_clear(KEY_FORWARD);         break;
 669                                 case 0x226: map_key_clear(KEY_STOP);            break;
 670                                 case 0x227: map_key_clear(KEY_REFRESH);         break;
 671                                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
 672                                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
 673                                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
 674                                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
 675                                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
 676                                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
 677                                 case 0x238: map_rel(REL_HWHEEL);                break;
 678                                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
 679                                 case 0x279: map_key_clear(KEY_REDO);            break;
 680
 681                                 case 0x289: map_key_clear(KEY_REPLY);           break;
 682                                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
 683                                 case 0x28c: map_key_clear(KEY_SEND);            break;
 684
 685                                 default:    goto ignore;
 686                         }
 687                         break;
 688
 689                 case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 690
 691                         set_bit(EV_REP, input->evbit);
 692                         switch (usage->hid & HID_USAGE) {
 693                                 case 0x021: map_key_clear(KEY_PRINT);           break;
 694                                 case 0x070: map_key_clear(KEY_HP);              break;
 695                                 case 0x071: map_key_clear(KEY_CAMERA);          break;
 696                                 case 0x072: map_key_clear(KEY_SOUND);           break;
 697                                 case 0x073: map_key_clear(KEY_QUESTION);        break;
 698                                 case 0x080: map_key_clear(KEY_EMAIL);           break;
 699                                 case 0x081: map_key_clear(KEY_CHAT);            break;
 700                                 case 0x082: map_key_clear(KEY_SEARCH);          break;
 701                                 case 0x083: map_key_clear(KEY_CONNECT);         break;
 702                                 case 0x084: map_key_clear(KEY_FINANCE);         break;
 703                                 case 0x085: map_key_clear(KEY_SPORT);           break;
 704                                 case 0x086: map_key_clear(KEY_SHOP);            break;
 705                                 default:    goto ignore;
 706                         }
 707                         break;
 708
 709                 case HID_UP_MSVENDOR:
 710
 711                         goto ignore;
 712
 713                 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
 714
 715                         set_bit(EV_REP, input->evbit);
 716                         switch(usage->hid & HID_USAGE) {
 717                                 case 0x003:
 718                                         /* The fn key on Apple USB keyboards */
 719                                         map_key_clear(KEY_FN);
 720                                         hidinput_apple_setup(input);
 721                                         break;
 722
 723                                 default:    goto ignore;
 724                         }
 725                         break;
 726
 727                 case HID_UP_LOGIVENDOR:
 728
 729                         goto ignore;
 730
 731                 case HID_UP_PID:
 732
 733                         switch(usage->hid & HID_USAGE) {
 734                                 case 0xa4: map_key_clear(BTN_DEAD);     break;
 735                                 default: goto ignore;
 736                         }
 737                         break;
 738
 739                 default:
 740                 unknown:
 741                         if (field->report_size == 1) {
 742                                 if (field->report->type == HID_OUTPUT_REPORT) {
 743                                         map_led(LED_MISC);
 744                                         break;
 745                                 }
 746                                 map_key(BTN_MISC);
 747                                 break;
 748                         }
 749                         if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 750                                 map_rel(REL_MISC);
 751                                 break;
 752                         }
 753                         map_abs(ABS_MISC);
 754                         break;
 755         }
 756
 757 mapped:
 758         if (device->quirks & HID_QUIRK_MIGHTYMOUSE) {
 759                 if (usage->hid == HID_GD_Z)
 760                         map_rel(REL_HWHEEL);
 761                 else if (usage->code == BTN_1)
 762                         map_key(BTN_2);
 763                 else if (usage->code == BTN_2)
 764                         map_key(BTN_1);
 765         }
 766
 767         if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5 |
 768                         HID_QUIRK_2WHEEL_MOUSE_HACK_B8)) && (usage->type == EV_REL) &&
 769                         (usage->code == REL_WHEEL))
 770                 set_bit(REL_HWHEEL, bit);
 771
 772         if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
 773                 || ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
 774                 goto ignore;
 775
 776         if ((device->quirks & HID_QUIRK_BAD_RELATIVE_KEYS) &&
 777                 usage->type == EV_KEY && (field->flags & HID_MAIN_ITEM_RELATIVE))
 778                 field->flags &= ~HID_MAIN_ITEM_RELATIVE;
 779
 780         set_bit(usage->type, input->evbit);
 781
 782         if (device->quirks & HID_QUIRK_DUPLICATE_USAGES &&
 783                         (usage->type == EV_KEY ||
 784                          usage->type == EV_REL ||
 785                          usage->type == EV_ABS))
 786                 clear_bit(usage->code, bit);
 787
 788         while (usage->code <= max && test_and_set_bit(usage->code, bit))
 789                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 790
 791         if (usage->code > max)
 792                 goto ignore;
 793
 794
 795         if (usage->type == EV_ABS) {
 796
 797                 int a = field->logical_minimum;
 798                 int b = field->logical_maximum;
 799
 800                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 801                         a = field->logical_minimum = 0;
 802                         b = field->logical_maximum = 255;
 803                 }
 804
 805                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
 806                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 807                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
 808
 809         }
 810
 811         if (usage->type == EV_ABS &&
 812             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
 813                 int i;
 814                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 815                         input_set_abs_params(input, i, -1, 1, 0, 0);
 816                         set_bit(i, input->absbit);
 817                 }
 818                 if (usage->hat_dir && !field->dpad)
 819                         field->dpad = usage->code;
 820         }
 821
 822         /* for those devices which produce Consumer volume usage as relative,
 823          * we emulate pressing volumeup/volumedown appropriate number of times
 824          * in hidinput_hid_event()
 825          */
 826         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 827                         (usage->code == ABS_VOLUME)) {
 828                 set_bit(KEY_VOLUMEUP, input->keybit);
 829                 set_bit(KEY_VOLUMEDOWN, input->keybit);
 830         }
 831
 832         if (usage->type == EV_KEY) {
 833                 set_bit(EV_MSC, input->evbit);
 834                 set_bit(MSC_SCAN, input->mscbit);
 835         }
 836
 837         hid_resolv_event(usage->type, usage->code);
 838
 839         dbg_hid_line("\n");
 840
 841         return;
 842
 843 ignore:
 844         dbg_hid_line("IGNORED\n");
 845         return;
 846 }
 847
 848 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
 849 {
 850         struct input_dev *input;
 851         unsigned *quirks = &hid->quirks;
 852
 853         if (!field->hidinput)
 854                 return;
 855
 856         input = field->hidinput->input;
 857
 858         if (!usage->type)
 859                 return;
 860
 861         /* handle input events for quirky devices */
 862         if (hidinput_event_quirks(hid, field, usage, value))
 863                 return;
 864
 865         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
 866                 int hat_dir = usage->hat_dir;
 867                 if (!hat_dir)
 868                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 869                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
 870                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
 871                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
 872                 return;
 873         }
 874
 875         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 876                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
 877                 return;
 878         }
 879
 880         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
 881                 if (value) {
 882                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
 883                         return;
 884                 }
 885                 input_event(input, usage->type, usage->code, 0);
 886                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
 887                 return;
 888         }
 889
 890         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
 891                 int a = field->logical_minimum;
 892                 int b = field->logical_maximum;
 893                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
 894         }
 895
 896         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
 897                 dbg_hid("Maximum Effects - %d\n",value);
 898                 return;
 899         }
 900
 901         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
 902                 dbg_hid("PID Pool Report\n");
 903                 return;
 904         }
 905
 906         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
 907                 return;
 908
 909         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 910                         (usage->code == ABS_VOLUME)) {
 911                 int count = abs(value);
 912                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
 913                 int i;
 914
 915                 for (i = 0; i < count; i++) {
 916                         input_event(input, EV_KEY, direction, 1);
 917                         input_sync(input);
 918                         input_event(input, EV_KEY, direction, 0);
 919                         input_sync(input);
 920                 }
 921                 return;
 922         }
 923
 924         /* report the usage code as scancode if the key status has changed */
 925         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
 926                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
 927
 928         input_event(input, usage->type, usage->code, value);
 929
 930         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
 931                 input_event(input, usage->type, usage->code, 0);
 932 }
 933
 934 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
 935 {
 936         struct hid_input *hidinput;
 937
 938         list_for_each_entry(hidinput, &hid->inputs, list)
 939                 input_sync(hidinput->input);
 940 }
 941 EXPORT_SYMBOL_GPL(hidinput_report_event);
 942
 943 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
 944 {
 945         struct hid_report *report;
 946         int i, j;
 947
 948         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
 949                 for (i = 0; i < report->maxfield; i++) {
 950                         *field = report->field[i];
 951                         for (j = 0; j < (*field)->maxusage; j++)
 952                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
 953                                         return j;
 954                 }
 955         }
 956         return -1;
 957 }
 958 EXPORT_SYMBOL_GPL(hidinput_find_field);
 959
 960 static int hidinput_open(struct input_dev *dev)
 961 {
 962         struct hid_device *hid = input_get_drvdata(dev);
 963
 964         return hid->hid_open(hid);
 965 }
 966
 967 static void hidinput_close(struct input_dev *dev)
 968 {
 969         struct hid_device *hid = input_get_drvdata(dev);
 970
 971         hid->hid_close(hid);
 972 }
 973
 974 /*
 975  * Register the input device; print a message.
 976  * Configure the input layer interface
 977  * Read all reports and initialize the absolute field values.
 978  */
 979
 980 int hidinput_connect(struct hid_device *hid)
 981 {
 982         struct hid_report *report;
 983         struct hid_input *hidinput = NULL;
 984         struct input_dev *input_dev;
 985         int i, j, k;
 986         int max_report_type = HID_OUTPUT_REPORT;
 987
 988         if (hid->quirks & HID_QUIRK_IGNORE_HIDINPUT)
 989                 return -1;
 990
 991         INIT_LIST_HEAD(&hid->inputs);
 992
 993         for (i = 0; i < hid->maxcollection; i++)
 994                 if (hid->collection[i].type == HID_COLLECTION_APPLICATION ||
 995                     hid->collection[i].type == HID_COLLECTION_PHYSICAL)
 996                         if (IS_INPUT_APPLICATION(hid->collection[i].usage))
 997                                 break;
 998
 999         if (i == hid->maxcollection && (hid->quirks & HID_QUIRK_HIDINPUT) == 0)
1000                 return -1;
1001
1002         if (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1003                 max_report_type = HID_INPUT_REPORT;
1004
1005         for (k = HID_INPUT_REPORT; k <= max_report_type; k++)
1006                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1007
1008                         if (!report->maxfield)
1009                                 continue;
1010
1011                         if (!hidinput) {
1012                                 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1013                                 input_dev = input_allocate_device();
1014                                 if (!hidinput || !input_dev) {
1015                                         kfree(hidinput);
1016                                         input_free_device(input_dev);
1017                                         err_hid("Out of memory during hid input probe");
1018                                         goto out_unwind;
1019                                 }
1020
1021                                 input_set_drvdata(input_dev, hid);
1022                                 input_dev->event = hid->hidinput_input_event;
1023                                 input_dev->open = hidinput_open;
1024                                 input_dev->close = hidinput_close;
1025                                 input_dev->setkeycode = hidinput_setkeycode;
1026                                 input_dev->getkeycode = hidinput_getkeycode;
1027
1028                                 input_dev->name = hid->name;
1029                                 input_dev->phys = hid->phys;
1030                                 input_dev->uniq = hid->uniq;
1031                                 input_dev->id.bustype = hid->bus;
1032                                 input_dev->id.vendor  = hid->vendor;
1033                                 input_dev->id.product = hid->product;
1034                                 input_dev->id.version = hid->version;
1035                                 input_dev->dev.parent = hid->dev;
1036                                 hidinput->input = input_dev;
1037                                 list_add_tail(&hidinput->list, &hid->inputs);
1038                         }
1039
1040                         for (i = 0; i < report->maxfield; i++)
1041                                 for (j = 0; j < report->field[i]->maxusage; j++)
1042                                         hidinput_configure_usage(hidinput, report->field[i],
1043                                                                  report->field[i]->usage + j);
1044
1045                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1046                                 /* This will leave hidinput NULL, so that it
1047                                  * allocates another one if we have more inputs on
1048                                  * the same interface. Some devices (e.g. Happ's
1049                                  * UGCI) cram a lot of unrelated inputs into the
1050                                  * same interface. */
1051                                 hidinput->report = report;
1052                                 if (input_register_device(hidinput->input))
1053                                         goto out_cleanup;
1054                                 hidinput = NULL;
1055                         }
1056                 }
1057
1058         if (hidinput && input_register_device(hidinput->input))
1059                 goto out_cleanup;
1060
1061         return 0;
1062
1063 out_cleanup:
1064         input_free_device(hidinput->input);
1065         kfree(hidinput);
1066 out_unwind:
1067         /* unwind the ones we already registered */
1068         hidinput_disconnect(hid);
1069
1070         return -1;
1071 }
1072 EXPORT_SYMBOL_GPL(hidinput_connect);
1073
1074 void hidinput_disconnect(struct hid_device *hid)
1075 {
1076         struct hid_input *hidinput, *next;
1077
1078         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1079                 list_del(&hidinput->list);
1080                 input_unregister_device(hidinput->input);
1081                 kfree(hidinput);
1082         }
1083 }
1084 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1085