drivers/hid/hid-input.c

   1 /*
   2  *  Copyright (c) 2000-2001 Vojtech Pavlik
   3  *  Copyright (c) 2006-2010 Jiri Kosina
   4  *
   5  *  HID to Linux Input mapping
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  *
  23  * Should you need to contact me, the author, you can do so either by
  24  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  25  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  26  */
  27
  28 #include <linux/module.h>
  29 #include <linux/slab.h>
  30 #include <linux/kernel.h>
  31
  32 #include <linux/hid.h>
  33 #include <linux/hid-debug.h>
  34
  35 #define unk     KEY_UNKNOWN
  36
  37 static const unsigned char hid_keyboard[256] = {
  38           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  39          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  40           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  41          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  42          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  43         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  44          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  45         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  46         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  47         122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  48         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  49         unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
  50         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  51         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  52          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  53         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  54 };
  55
  56 static const struct {
  57         __s32 x;
  58         __s32 y;
  59 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  60
  61 #define map_abs(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
  62 #define map_rel(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
  63 #define map_key(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
  64 #define map_led(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
  65
  66 #define map_abs_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
  67                 &max, EV_ABS, (c))
  68 #define map_key_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
  69                 &max, EV_KEY, (c))
  70
  71 static inline int match_scancode(unsigned int code, unsigned int scancode)
  72 {
  73         if (scancode == 0)
  74                 return 1;
  75
  76         return (code & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
  77 }
  78
  79 static inline int match_keycode(unsigned int code, unsigned int keycode)
  80 {
  81         if (keycode == 0)
  82                 return 1;
  83
  84         return code == keycode;
  85 }
  86
  87 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
  88                                            unsigned int scancode,
  89                                            unsigned int keycode)
  90 {
  91         int i, j, k;
  92         struct hid_report *report;
  93         struct hid_usage *usage;
  94
  95         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
  96                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
  97                         for (i = 0; i < report->maxfield; i++) {
  98                                 for ( j = 0; j < report->field[i]->maxusage; j++) {
  99                                         usage = report->field[i]->usage + j;
 100                                         if (usage->type == EV_KEY &&
 101                                                 match_scancode(usage->hid, scancode) &&
 102                                                 match_keycode(usage->code, keycode))
 103                                                 return usage;
 104                                 }
 105                         }
 106                 }
 107         }
 108         return NULL;
 109 }
 110
 111 static int hidinput_getkeycode(struct input_dev *dev,
 112                                unsigned int scancode, unsigned int *keycode)
 113 {
 114         struct hid_device *hid = input_get_drvdata(dev);
 115         struct hid_usage *usage;
 116
 117         usage = hidinput_find_key(hid, scancode, 0);
 118         if (usage) {
 119                 *keycode = usage->code;
 120                 return 0;
 121         }
 122         return -EINVAL;
 123 }
 124
 125 static int hidinput_setkeycode(struct input_dev *dev,
 126                                unsigned int scancode, unsigned int keycode)
 127 {
 128         struct hid_device *hid = input_get_drvdata(dev);
 129         struct hid_usage *usage;
 130         int old_keycode;
 131
 132         usage = hidinput_find_key(hid, scancode, 0);
 133         if (usage) {
 134                 old_keycode = usage->code;
 135                 usage->code = keycode;
 136
 137                 clear_bit(old_keycode, dev->keybit);
 138                 set_bit(usage->code, dev->keybit);
 139                 dbg_hid(KERN_DEBUG "Assigned keycode %d to HID usage code %x\n", keycode, scancode);
 140                 /* Set the keybit for the old keycode if the old keycode is used
 141                  * by another key */
 142                 if (hidinput_find_key (hid, 0, old_keycode))
 143                         set_bit(old_keycode, dev->keybit);
 144
 145                 return 0;
 146         }
 147
 148         return -EINVAL;
 149 }
 150
 151
 152 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
 153                                      struct hid_usage *usage)
 154 {
 155         struct input_dev *input = hidinput->input;
 156         struct hid_device *device = input_get_drvdata(input);
 157         int max = 0, code;
 158         unsigned long *bit = NULL;
 159
 160         field->hidinput = hidinput;
 161
 162         if (field->flags & HID_MAIN_ITEM_CONSTANT)
 163                 goto ignore;
 164
 165         /* only LED usages are supported in output fields */
 166         if (field->report_type == HID_OUTPUT_REPORT &&
 167                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
 168                 goto ignore;
 169         }
 170
 171         if (device->driver->input_mapping) {
 172                 int ret = device->driver->input_mapping(device, hidinput, field,
 173                                 usage, &bit, &max);
 174                 if (ret > 0)
 175                         goto mapped;
 176                 if (ret < 0)
 177                         goto ignore;
 178         }
 179
 180         switch (usage->hid & HID_USAGE_PAGE) {
 181         case HID_UP_UNDEFINED:
 182                 goto ignore;
 183
 184         case HID_UP_KEYBOARD:
 185                 set_bit(EV_REP, input->evbit);
 186
 187                 if ((usage->hid & HID_USAGE) < 256) {
 188                         if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
 189                         map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
 190                 } else
 191                         map_key(KEY_UNKNOWN);
 192
 193                 break;
 194
 195         case HID_UP_BUTTON:
 196                 code = ((usage->hid - 1) & HID_USAGE);
 197
 198                 switch (field->application) {
 199                 case HID_GD_MOUSE:
 200                 case HID_GD_POINTER:  code += 0x110; break;
 201                 case HID_GD_JOYSTICK:
 202                                 if (code <= 0xf)
 203                                         code += BTN_JOYSTICK;
 204                                 else
 205                                         code += BTN_TRIGGER_HAPPY;
 206                                 break;
 207                 case HID_GD_GAMEPAD:  code += 0x130; break;
 208                 default:
 209                         switch (field->physical) {
 210                         case HID_GD_MOUSE:
 211                         case HID_GD_POINTER:  code += 0x110; break;
 212                         case HID_GD_JOYSTICK: code += 0x120; break;
 213                         case HID_GD_GAMEPAD:  code += 0x130; break;
 214                         default:              code += 0x100;
 215                         }
 216                 }
 217
 218                 map_key(code);
 219                 break;
 220
 221         case HID_UP_SIMULATION:
 222                 switch (usage->hid & 0xffff) {
 223                 case 0xba: map_abs(ABS_RUDDER);   break;
 224                 case 0xbb: map_abs(ABS_THROTTLE); break;
 225                 case 0xc4: map_abs(ABS_GAS);      break;
 226                 case 0xc5: map_abs(ABS_BRAKE);    break;
 227                 case 0xc8: map_abs(ABS_WHEEL);    break;
 228                 default:   goto ignore;
 229                 }
 230                 break;
 231
 232         case HID_UP_GENDESK:
 233                 if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 234                         switch (usage->hid & 0xf) {
 235                         case 0x1: map_key_clear(KEY_POWER);  break;
 236                         case 0x2: map_key_clear(KEY_SLEEP);  break;
 237                         case 0x3: map_key_clear(KEY_WAKEUP); break;
 238                         default: goto unknown;
 239                         }
 240                         break;
 241                 }
 242
 243                 if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
 244                         switch (usage->hid) {
 245                         case HID_GD_UP:    usage->hat_dir = 1; break;
 246                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
 247                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
 248                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
 249                         default: goto unknown;
 250                         }
 251                         if (field->dpad) {
 252                                 map_abs(field->dpad);
 253                                 goto ignore;
 254                         }
 255                         map_abs(ABS_HAT0X);
 256                         break;
 257                 }
 258
 259                 switch (usage->hid) {
 260                 /* These usage IDs map directly to the usage codes. */
 261                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
 262                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
 263                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
 264                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
 265                                 map_rel(usage->hid & 0xf);
 266                         else
 267                                 map_abs(usage->hid & 0xf);
 268                         break;
 269
 270                 case HID_GD_HATSWITCH:
 271                         usage->hat_min = field->logical_minimum;
 272                         usage->hat_max = field->logical_maximum;
 273                         map_abs(ABS_HAT0X);
 274                         break;
 275
 276                 case HID_GD_START:      map_key_clear(BTN_START);       break;
 277                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 278
 279                 default: goto unknown;
 280                 }
 281
 282                 break;
 283
 284         case HID_UP_LED:
 285                 switch (usage->hid & 0xffff) {                /* HID-Value:                   */
 286                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
 287                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
 288                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
 289                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
 290                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
 291                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
 292                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
 293                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
 294                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
 295                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
 296                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
 297
 298                 default: goto ignore;
 299                 }
 300                 break;
 301
 302         case HID_UP_DIGITIZER:
 303                 switch (usage->hid & 0xff) {
 304                 case 0x00: /* Undefined */
 305                         goto ignore;
 306
 307                 case 0x30: /* TipPressure */
 308                         if (!test_bit(BTN_TOUCH, input->keybit)) {
 309                                 device->quirks |= HID_QUIRK_NOTOUCH;
 310                                 set_bit(EV_KEY, input->evbit);
 311                                 set_bit(BTN_TOUCH, input->keybit);
 312                         }
 313                         map_abs_clear(ABS_PRESSURE);
 314                         break;
 315
 316                 case 0x32: /* InRange */
 317                         switch (field->physical & 0xff) {
 318                         case 0x21: map_key(BTN_TOOL_MOUSE); break;
 319                         case 0x22: map_key(BTN_TOOL_FINGER); break;
 320                         default: map_key(BTN_TOOL_PEN); break;
 321                         }
 322                         break;
 323
 324                 case 0x3c: /* Invert */
 325                         map_key_clear(BTN_TOOL_RUBBER);
 326                         break;
 327
 328                 case 0x33: /* Touch */
 329                 case 0x42: /* TipSwitch */
 330                 case 0x43: /* TipSwitch2 */
 331                         device->quirks &= ~HID_QUIRK_NOTOUCH;
 332                         map_key_clear(BTN_TOUCH);
 333                         break;
 334
 335                 case 0x44: /* BarrelSwitch */
 336                         map_key_clear(BTN_STYLUS);
 337                         break;
 338
 339                 default:  goto unknown;
 340                 }
 341                 break;
 342
 343         case HID_UP_CONSUMER:   /* USB HUT v1.1, pages 56-62 */
 344                 switch (usage->hid & HID_USAGE) {
 345                 case 0x000: goto ignore;
 346                 case 0x034: map_key_clear(KEY_SLEEP);           break;
 347                 case 0x036: map_key_clear(BTN_MISC);            break;
 348
 349                 case 0x040: map_key_clear(KEY_MENU);            break;
 350                 case 0x045: map_key_clear(KEY_RADIO);           break;
 351
 352                 case 0x083: map_key_clear(KEY_LAST);            break;
 353                 case 0x088: map_key_clear(KEY_PC);              break;
 354                 case 0x089: map_key_clear(KEY_TV);              break;
 355                 case 0x08a: map_key_clear(KEY_WWW);             break;
 356                 case 0x08b: map_key_clear(KEY_DVD);             break;
 357                 case 0x08c: map_key_clear(KEY_PHONE);           break;
 358                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
 359                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
 360                 case 0x08f: map_key_clear(KEY_GAMES);           break;
 361                 case 0x090: map_key_clear(KEY_MEMO);            break;
 362                 case 0x091: map_key_clear(KEY_CD);              break;
 363                 case 0x092: map_key_clear(KEY_VCR);             break;
 364                 case 0x093: map_key_clear(KEY_TUNER);           break;
 365                 case 0x094: map_key_clear(KEY_EXIT);            break;
 366                 case 0x095: map_key_clear(KEY_HELP);            break;
 367                 case 0x096: map_key_clear(KEY_TAPE);            break;
 368                 case 0x097: map_key_clear(KEY_TV2);             break;
 369                 case 0x098: map_key_clear(KEY_SAT);             break;
 370                 case 0x09a: map_key_clear(KEY_PVR);             break;
 371
 372                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
 373                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
 374                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
 375
 376                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
 377                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
 378                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
 379                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
 380                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
 381                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
 382                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
 383                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
 384                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
 385                 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
 386
 387                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
 388                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
 389                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
 390                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
 391                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
 392                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
 393
 394                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
 395                 case 0x183: map_key_clear(KEY_CONFIG);          break;
 396                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
 397                 case 0x185: map_key_clear(KEY_EDITOR);          break;
 398                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
 399                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
 400                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
 401                 case 0x189: map_key_clear(KEY_DATABASE);        break;
 402                 case 0x18a: map_key_clear(KEY_MAIL);            break;
 403                 case 0x18b: map_key_clear(KEY_NEWS);            break;
 404                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
 405                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
 406                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
 407                 case 0x191: map_key_clear(KEY_FINANCE);         break;
 408                 case 0x192: map_key_clear(KEY_CALC);            break;
 409                 case 0x194: map_key_clear(KEY_FILE);            break;
 410                 case 0x196: map_key_clear(KEY_WWW);             break;
 411                 case 0x199: map_key_clear(KEY_CHAT);            break;
 412                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
 413                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
 414                 case 0x1a6: map_key_clear(KEY_HELP);            break;
 415                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
 416                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
 417                 case 0x1b6: map_key_clear(KEY_MEDIA);           break;
 418                 case 0x1b7: map_key_clear(KEY_SOUND);           break;
 419                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
 420                 case 0x1bd: map_key_clear(KEY_INFO);            break;
 421                 case 0x201: map_key_clear(KEY_NEW);             break;
 422                 case 0x202: map_key_clear(KEY_OPEN);            break;
 423                 case 0x203: map_key_clear(KEY_CLOSE);           break;
 424                 case 0x204: map_key_clear(KEY_EXIT);            break;
 425                 case 0x207: map_key_clear(KEY_SAVE);            break;
 426                 case 0x208: map_key_clear(KEY_PRINT);           break;
 427                 case 0x209: map_key_clear(KEY_PROPS);           break;
 428                 case 0x21a: map_key_clear(KEY_UNDO);            break;
 429                 case 0x21b: map_key_clear(KEY_COPY);            break;
 430                 case 0x21c: map_key_clear(KEY_CUT);             break;
 431                 case 0x21d: map_key_clear(KEY_PASTE);           break;
 432                 case 0x21f: map_key_clear(KEY_FIND);            break;
 433                 case 0x221: map_key_clear(KEY_SEARCH);          break;
 434                 case 0x222: map_key_clear(KEY_GOTO);            break;
 435                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
 436                 case 0x224: map_key_clear(KEY_BACK);            break;
 437                 case 0x225: map_key_clear(KEY_FORWARD);         break;
 438                 case 0x226: map_key_clear(KEY_STOP);            break;
 439                 case 0x227: map_key_clear(KEY_REFRESH);         break;
 440                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
 441                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
 442                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
 443                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
 444                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
 445                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
 446                 case 0x238: map_rel(REL_HWHEEL);                break;
 447                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
 448                 case 0x279: map_key_clear(KEY_REDO);            break;
 449
 450                 case 0x289: map_key_clear(KEY_REPLY);           break;
 451                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
 452                 case 0x28c: map_key_clear(KEY_SEND);            break;
 453
 454                 default:    goto ignore;
 455                 }
 456                 break;
 457
 458         case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 459                 set_bit(EV_REP, input->evbit);
 460                 switch (usage->hid & HID_USAGE) {
 461                 case 0x021: map_key_clear(KEY_PRINT);           break;
 462                 case 0x070: map_key_clear(KEY_HP);              break;
 463                 case 0x071: map_key_clear(KEY_CAMERA);          break;
 464                 case 0x072: map_key_clear(KEY_SOUND);           break;
 465                 case 0x073: map_key_clear(KEY_QUESTION);        break;
 466                 case 0x080: map_key_clear(KEY_EMAIL);           break;
 467                 case 0x081: map_key_clear(KEY_CHAT);            break;
 468                 case 0x082: map_key_clear(KEY_SEARCH);          break;
 469                 case 0x083: map_key_clear(KEY_CONNECT);         break;
 470                 case 0x084: map_key_clear(KEY_FINANCE);         break;
 471                 case 0x085: map_key_clear(KEY_SPORT);           break;
 472                 case 0x086: map_key_clear(KEY_SHOP);            break;
 473                 default:    goto ignore;
 474                 }
 475                 break;
 476
 477         case HID_UP_MSVENDOR:
 478                 goto ignore;
 479
 480         case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
 481                 set_bit(EV_REP, input->evbit);
 482                 goto ignore;
 483
 484         case HID_UP_LOGIVENDOR:
 485                 goto ignore;
 486
 487         case HID_UP_PID:
 488                 switch (usage->hid & HID_USAGE) {
 489                 case 0xa4: map_key_clear(BTN_DEAD);     break;
 490                 default: goto ignore;
 491                 }
 492                 break;
 493
 494         default:
 495         unknown:
 496                 if (field->report_size == 1) {
 497                         if (field->report->type == HID_OUTPUT_REPORT) {
 498                                 map_led(LED_MISC);
 499                                 break;
 500                         }
 501                         map_key(BTN_MISC);
 502                         break;
 503                 }
 504                 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 505                         map_rel(REL_MISC);
 506                         break;
 507                 }
 508                 map_abs(ABS_MISC);
 509                 break;
 510         }
 511
 512 mapped:
 513         if (device->driver->input_mapped && device->driver->input_mapped(device,
 514                                 hidinput, field, usage, &bit, &max) < 0)
 515                 goto ignore;
 516
 517         set_bit(usage->type, input->evbit);
 518
 519         while (usage->code <= max && test_and_set_bit(usage->code, bit))
 520                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 521
 522         if (usage->code > max)
 523                 goto ignore;
 524
 525
 526         if (usage->type == EV_ABS) {
 527
 528                 int a = field->logical_minimum;
 529                 int b = field->logical_maximum;
 530
 531                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 532                         a = field->logical_minimum = 0;
 533                         b = field->logical_maximum = 255;
 534                 }
 535
 536                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
 537                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 538                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
 539
 540                 /* use a larger default input buffer for MT devices */
 541                 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
 542                         input_set_events_per_packet(input, 60);
 543         }
 544
 545         if (usage->type == EV_ABS &&
 546             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
 547                 int i;
 548                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 549                         input_set_abs_params(input, i, -1, 1, 0, 0);
 550                         set_bit(i, input->absbit);
 551                 }
 552                 if (usage->hat_dir && !field->dpad)
 553                         field->dpad = usage->code;
 554         }
 555
 556         /* for those devices which produce Consumer volume usage as relative,
 557          * we emulate pressing volumeup/volumedown appropriate number of times
 558          * in hidinput_hid_event()
 559          */
 560         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 561                         (usage->code == ABS_VOLUME)) {
 562                 set_bit(KEY_VOLUMEUP, input->keybit);
 563                 set_bit(KEY_VOLUMEDOWN, input->keybit);
 564         }
 565
 566         if (usage->type == EV_KEY) {
 567                 set_bit(EV_MSC, input->evbit);
 568                 set_bit(MSC_SCAN, input->mscbit);
 569         }
 570
 571 ignore:
 572         return;
 573
 574 }
 575
 576 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
 577 {
 578         struct input_dev *input;
 579         unsigned *quirks = &hid->quirks;
 580
 581         if (!field->hidinput)
 582                 return;
 583
 584         input = field->hidinput->input;
 585
 586         if (!usage->type)
 587                 return;
 588
 589         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
 590                 int hat_dir = usage->hat_dir;
 591                 if (!hat_dir)
 592                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 593                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
 594                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
 595                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
 596                 return;
 597         }
 598
 599         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 600                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
 601                 return;
 602         }
 603
 604         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
 605                 if (value) {
 606                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
 607                         return;
 608                 }
 609                 input_event(input, usage->type, usage->code, 0);
 610                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
 611                 return;
 612         }
 613
 614         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
 615                 int a = field->logical_minimum;
 616                 int b = field->logical_maximum;
 617                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
 618         }
 619
 620         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
 621                 dbg_hid("Maximum Effects - %d\n",value);
 622                 return;
 623         }
 624
 625         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
 626                 dbg_hid("PID Pool Report\n");
 627                 return;
 628         }
 629
 630         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
 631                 return;
 632
 633         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 634                         (usage->code == ABS_VOLUME)) {
 635                 int count = abs(value);
 636                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
 637                 int i;
 638
 639                 for (i = 0; i < count; i++) {
 640                         input_event(input, EV_KEY, direction, 1);
 641                         input_sync(input);
 642                         input_event(input, EV_KEY, direction, 0);
 643                         input_sync(input);
 644                 }
 645                 return;
 646         }
 647
 648         /* report the usage code as scancode if the key status has changed */
 649         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
 650                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
 651
 652         input_event(input, usage->type, usage->code, value);
 653
 654         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
 655                 input_event(input, usage->type, usage->code, 0);
 656 }
 657
 658 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
 659 {
 660         struct hid_input *hidinput;
 661
 662         list_for_each_entry(hidinput, &hid->inputs, list)
 663                 input_sync(hidinput->input);
 664 }
 665 EXPORT_SYMBOL_GPL(hidinput_report_event);
 666
 667 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
 668 {
 669         struct hid_report *report;
 670         int i, j;
 671
 672         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
 673                 for (i = 0; i < report->maxfield; i++) {
 674                         *field = report->field[i];
 675                         for (j = 0; j < (*field)->maxusage; j++)
 676                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
 677                                         return j;
 678                 }
 679         }
 680         return -1;
 681 }
 682 EXPORT_SYMBOL_GPL(hidinput_find_field);
 683
 684 static int hidinput_open(struct input_dev *dev)
 685 {
 686         struct hid_device *hid = input_get_drvdata(dev);
 687
 688         return hid->ll_driver->open(hid);
 689 }
 690
 691 static void hidinput_close(struct input_dev *dev)
 692 {
 693         struct hid_device *hid = input_get_drvdata(dev);
 694
 695         hid->ll_driver->close(hid);
 696 }
 697
 698 /*
 699  * Register the input device; print a message.
 700  * Configure the input layer interface
 701  * Read all reports and initialize the absolute field values.
 702  */
 703
 704 int hidinput_connect(struct hid_device *hid, unsigned int force)
 705 {
 706         struct hid_report *report;
 707         struct hid_input *hidinput = NULL;
 708         struct input_dev *input_dev;
 709         int i, j, k;
 710         int max_report_type = HID_OUTPUT_REPORT;
 711
 712         INIT_LIST_HEAD(&hid->inputs);
 713
 714         if (!force) {
 715                 for (i = 0; i < hid->maxcollection; i++) {
 716                         struct hid_collection *col = &hid->collection[i];
 717                         if (col->type == HID_COLLECTION_APPLICATION ||
 718                                         col->type == HID_COLLECTION_PHYSICAL)
 719                                 if (IS_INPUT_APPLICATION(col->usage))
 720                                         break;
 721                 }
 722
 723                 if (i == hid->maxcollection)
 724                         return -1;
 725         }
 726
 727         if (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
 728                 max_report_type = HID_INPUT_REPORT;
 729
 730         for (k = HID_INPUT_REPORT; k <= max_report_type; k++)
 731                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 732
 733                         if (!report->maxfield)
 734                                 continue;
 735
 736                         if (!hidinput) {
 737                                 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
 738                                 input_dev = input_allocate_device();
 739                                 if (!hidinput || !input_dev) {
 740                                         kfree(hidinput);
 741                                         input_free_device(input_dev);
 742                                         err_hid("Out of memory during hid input probe");
 743                                         goto out_unwind;
 744                                 }
 745
 746                                 input_set_drvdata(input_dev, hid);
 747                                 input_dev->event =
 748                                         hid->ll_driver->hidinput_input_event;
 749                                 input_dev->open = hidinput_open;
 750                                 input_dev->close = hidinput_close;
 751                                 input_dev->setkeycode = hidinput_setkeycode;
 752                                 input_dev->getkeycode = hidinput_getkeycode;
 753
 754                                 input_dev->name = hid->name;
 755                                 input_dev->phys = hid->phys;
 756                                 input_dev->uniq = hid->uniq;
 757                                 input_dev->id.bustype = hid->bus;
 758                                 input_dev->id.vendor  = hid->vendor;
 759                                 input_dev->id.product = hid->product;
 760                                 input_dev->id.version = hid->version;
 761                                 input_dev->dev.parent = hid->dev.parent;
 762                                 hidinput->input = input_dev;
 763                                 list_add_tail(&hidinput->list, &hid->inputs);
 764                         }
 765
 766                         for (i = 0; i < report->maxfield; i++)
 767                                 for (j = 0; j < report->field[i]->maxusage; j++)
 768                                         hidinput_configure_usage(hidinput, report->field[i],
 769                                                                  report->field[i]->usage + j);
 770
 771                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
 772                                 /* This will leave hidinput NULL, so that it
 773                                  * allocates another one if we have more inputs on
 774                                  * the same interface. Some devices (e.g. Happ's
 775                                  * UGCI) cram a lot of unrelated inputs into the
 776                                  * same interface. */
 777                                 hidinput->report = report;
 778                                 if (input_register_device(hidinput->input))
 779                                         goto out_cleanup;
 780                                 hidinput = NULL;
 781                         }
 782                 }
 783
 784         if (hidinput && input_register_device(hidinput->input))
 785                 goto out_cleanup;
 786
 787         return 0;
 788
 789 out_cleanup:
 790         input_free_device(hidinput->input);
 791         kfree(hidinput);
 792 out_unwind:
 793         /* unwind the ones we already registered */
 794         hidinput_disconnect(hid);
 795
 796         return -1;
 797 }
 798 EXPORT_SYMBOL_GPL(hidinput_connect);
 799
 800 void hidinput_disconnect(struct hid_device *hid)
 801 {
 802         struct hid_input *hidinput, *next;
 803
 804         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
 805                 list_del(&hidinput->list);
 806                 input_unregister_device(hidinput->input);
 807                 kfree(hidinput);
 808         }
 809 }
 810 EXPORT_SYMBOL_GPL(hidinput_disconnect);
 811