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 /**
 153  * hidinput_calc_abs_res - calculate an absolute axis resolution
 154  * @field: the HID report field to calculate resolution for
 155  * @code: axis code
 156  *
 157  * The formula is:
 158  *                         (logical_maximum - logical_minimum)
 159  * resolution = ----------------------------------------------------------
 160  *              (physical_maximum - physical_minimum) * 10 ^ unit_exponent
 161  *
 162  * as seen in the HID specification v1.11 6.2.2.7 Global Items.
 163  *
 164  * Only exponent 1 length units are processed. Centimeters are converted to
 165  * inches. Degrees are converted to radians.
 166  */
 167 static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
 168 {
 169         __s32 unit_exponent = field->unit_exponent;
 170         __s32 logical_extents = field->logical_maximum -
 171                                         field->logical_minimum;
 172         __s32 physical_extents = field->physical_maximum -
 173                                         field->physical_minimum;
 174         __s32 prev;
 175
 176         /* Check if the extents are sane */
 177         if (logical_extents <= 0 || physical_extents <= 0)
 178                 return 0;
 179
 180         /*
 181          * Verify and convert units.
 182          * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
 183          */
 184         if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
 185                 if (field->unit == 0x11) {              /* If centimeters */
 186                         /* Convert to inches */
 187                         prev = logical_extents;
 188                         logical_extents *= 254;
 189                         if (logical_extents < prev)
 190                                 return 0;
 191                         unit_exponent += 2;
 192                 } else if (field->unit != 0x13) {       /* If not inches */
 193                         return 0;
 194                 }
 195         } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
 196                 if (field->unit == 0x14) {              /* If degrees */
 197                         /* Convert to radians */
 198                         prev = logical_extents;
 199                         logical_extents *= 573;
 200                         if (logical_extents < prev)
 201                                 return 0;
 202                         unit_exponent += 1;
 203                 } else if (field->unit != 0x12) {       /* If not radians */
 204                         return 0;
 205                 }
 206         } else {
 207                 return 0;
 208         }
 209
 210         /* Apply negative unit exponent */
 211         for (; unit_exponent < 0; unit_exponent++) {
 212                 prev = logical_extents;
 213                 logical_extents *= 10;
 214                 if (logical_extents < prev)
 215                         return 0;
 216         }
 217         /* Apply positive unit exponent */
 218         for (; unit_exponent > 0; unit_exponent--) {
 219                 prev = physical_extents;
 220                 physical_extents *= 10;
 221                 if (physical_extents < prev)
 222                         return 0;
 223         }
 224
 225         /* Calculate resolution */
 226         return logical_extents / physical_extents;
 227 }
 228
 229 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
 230                                      struct hid_usage *usage)
 231 {
 232         struct input_dev *input = hidinput->input;
 233         struct hid_device *device = input_get_drvdata(input);
 234         int max = 0, code;
 235         unsigned long *bit = NULL;
 236
 237         field->hidinput = hidinput;
 238
 239         if (field->flags & HID_MAIN_ITEM_CONSTANT)
 240                 goto ignore;
 241
 242         /* only LED usages are supported in output fields */
 243         if (field->report_type == HID_OUTPUT_REPORT &&
 244                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
 245                 goto ignore;
 246         }
 247
 248         if (device->driver->input_mapping) {
 249                 int ret = device->driver->input_mapping(device, hidinput, field,
 250                                 usage, &bit, &max);
 251                 if (ret > 0)
 252                         goto mapped;
 253                 if (ret < 0)
 254                         goto ignore;
 255         }
 256
 257         switch (usage->hid & HID_USAGE_PAGE) {
 258         case HID_UP_UNDEFINED:
 259                 goto ignore;
 260
 261         case HID_UP_KEYBOARD:
 262                 set_bit(EV_REP, input->evbit);
 263
 264                 if ((usage->hid & HID_USAGE) < 256) {
 265                         if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
 266                         map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
 267                 } else
 268                         map_key(KEY_UNKNOWN);
 269
 270                 break;
 271
 272         case HID_UP_BUTTON:
 273                 code = ((usage->hid - 1) & HID_USAGE);
 274
 275                 switch (field->application) {
 276                 case HID_GD_MOUSE:
 277                 case HID_GD_POINTER:  code += 0x110; break;
 278                 case HID_GD_JOYSTICK:
 279                                 if (code <= 0xf)
 280                                         code += BTN_JOYSTICK;
 281                                 else
 282                                         code += BTN_TRIGGER_HAPPY;
 283                                 break;
 284                 case HID_GD_GAMEPAD:  code += 0x130; break;
 285                 default:
 286                         switch (field->physical) {
 287                         case HID_GD_MOUSE:
 288                         case HID_GD_POINTER:  code += 0x110; break;
 289                         case HID_GD_JOYSTICK: code += 0x120; break;
 290                         case HID_GD_GAMEPAD:  code += 0x130; break;
 291                         default:              code += 0x100;
 292                         }
 293                 }
 294
 295                 map_key(code);
 296                 break;
 297
 298         case HID_UP_SIMULATION:
 299                 switch (usage->hid & 0xffff) {
 300                 case 0xba: map_abs(ABS_RUDDER);   break;
 301                 case 0xbb: map_abs(ABS_THROTTLE); break;
 302                 case 0xc4: map_abs(ABS_GAS);      break;
 303                 case 0xc5: map_abs(ABS_BRAKE);    break;
 304                 case 0xc8: map_abs(ABS_WHEEL);    break;
 305                 default:   goto ignore;
 306                 }
 307                 break;
 308
 309         case HID_UP_GENDESK:
 310                 if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 311                         switch (usage->hid & 0xf) {
 312                         case 0x1: map_key_clear(KEY_POWER);  break;
 313                         case 0x2: map_key_clear(KEY_SLEEP);  break;
 314                         case 0x3: map_key_clear(KEY_WAKEUP); break;
 315                         default: goto unknown;
 316                         }
 317                         break;
 318                 }
 319
 320                 if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
 321                         switch (usage->hid) {
 322                         case HID_GD_UP:    usage->hat_dir = 1; break;
 323                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
 324                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
 325                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
 326                         default: goto unknown;
 327                         }
 328                         if (field->dpad) {
 329                                 map_abs(field->dpad);
 330                                 goto ignore;
 331                         }
 332                         map_abs(ABS_HAT0X);
 333                         break;
 334                 }
 335
 336                 switch (usage->hid) {
 337                 /* These usage IDs map directly to the usage codes. */
 338                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
 339                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
 340                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
 341                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
 342                                 map_rel(usage->hid & 0xf);
 343                         else
 344                                 map_abs(usage->hid & 0xf);
 345                         break;
 346
 347                 case HID_GD_HATSWITCH:
 348                         usage->hat_min = field->logical_minimum;
 349                         usage->hat_max = field->logical_maximum;
 350                         map_abs(ABS_HAT0X);
 351                         break;
 352
 353                 case HID_GD_START:      map_key_clear(BTN_START);       break;
 354                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 355
 356                 default: goto unknown;
 357                 }
 358
 359                 break;
 360
 361         case HID_UP_LED:
 362                 switch (usage->hid & 0xffff) {                /* HID-Value:                   */
 363                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
 364                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
 365                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
 366                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
 367                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
 368                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
 369                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
 370                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
 371                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
 372                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
 373                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
 374
 375                 default: goto ignore;
 376                 }
 377                 break;
 378
 379         case HID_UP_DIGITIZER:
 380                 switch (usage->hid & 0xff) {
 381                 case 0x00: /* Undefined */
 382                         goto ignore;
 383
 384                 case 0x30: /* TipPressure */
 385                         if (!test_bit(BTN_TOUCH, input->keybit)) {
 386                                 device->quirks |= HID_QUIRK_NOTOUCH;
 387                                 set_bit(EV_KEY, input->evbit);
 388                                 set_bit(BTN_TOUCH, input->keybit);
 389                         }
 390                         map_abs_clear(ABS_PRESSURE);
 391                         break;
 392
 393                 case 0x32: /* InRange */
 394                         switch (field->physical & 0xff) {
 395                         case 0x21: map_key(BTN_TOOL_MOUSE); break;
 396                         case 0x22: map_key(BTN_TOOL_FINGER); break;
 397                         default: map_key(BTN_TOOL_PEN); break;
 398                         }
 399                         break;
 400
 401                 case 0x3c: /* Invert */
 402                         map_key_clear(BTN_TOOL_RUBBER);
 403                         break;
 404
 405                 case 0x33: /* Touch */
 406                 case 0x42: /* TipSwitch */
 407                 case 0x43: /* TipSwitch2 */
 408                         device->quirks &= ~HID_QUIRK_NOTOUCH;
 409                         map_key_clear(BTN_TOUCH);
 410                         break;
 411
 412                 case 0x44: /* BarrelSwitch */
 413                         map_key_clear(BTN_STYLUS);
 414                         break;
 415
 416                 case 0x46: /* TabletPick */
 417                         map_key_clear(BTN_STYLUS2);
 418                         break;
 419
 420                 default:  goto unknown;
 421                 }
 422                 break;
 423
 424         case HID_UP_CONSUMER:   /* USB HUT v1.1, pages 56-62 */
 425                 switch (usage->hid & HID_USAGE) {
 426                 case 0x000: goto ignore;
 427                 case 0x034: map_key_clear(KEY_SLEEP);           break;
 428                 case 0x036: map_key_clear(BTN_MISC);            break;
 429
 430                 case 0x040: map_key_clear(KEY_MENU);            break;
 431                 case 0x045: map_key_clear(KEY_RADIO);           break;
 432
 433                 case 0x083: map_key_clear(KEY_LAST);            break;
 434                 case 0x088: map_key_clear(KEY_PC);              break;
 435                 case 0x089: map_key_clear(KEY_TV);              break;
 436                 case 0x08a: map_key_clear(KEY_WWW);             break;
 437                 case 0x08b: map_key_clear(KEY_DVD);             break;
 438                 case 0x08c: map_key_clear(KEY_PHONE);           break;
 439                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
 440                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
 441                 case 0x08f: map_key_clear(KEY_GAMES);           break;
 442                 case 0x090: map_key_clear(KEY_MEMO);            break;
 443                 case 0x091: map_key_clear(KEY_CD);              break;
 444                 case 0x092: map_key_clear(KEY_VCR);             break;
 445                 case 0x093: map_key_clear(KEY_TUNER);           break;
 446                 case 0x094: map_key_clear(KEY_EXIT);            break;
 447                 case 0x095: map_key_clear(KEY_HELP);            break;
 448                 case 0x096: map_key_clear(KEY_TAPE);            break;
 449                 case 0x097: map_key_clear(KEY_TV2);             break;
 450                 case 0x098: map_key_clear(KEY_SAT);             break;
 451                 case 0x09a: map_key_clear(KEY_PVR);             break;
 452
 453                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
 454                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
 455                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
 456
 457                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
 458                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
 459                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
 460                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
 461                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
 462                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
 463                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
 464                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
 465                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
 466                 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
 467
 468                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
 469                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
 470                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
 471                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
 472                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
 473                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
 474
 475                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
 476                 case 0x183: map_key_clear(KEY_CONFIG);          break;
 477                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
 478                 case 0x185: map_key_clear(KEY_EDITOR);          break;
 479                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
 480                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
 481                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
 482                 case 0x189: map_key_clear(KEY_DATABASE);        break;
 483                 case 0x18a: map_key_clear(KEY_MAIL);            break;
 484                 case 0x18b: map_key_clear(KEY_NEWS);            break;
 485                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
 486                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
 487                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
 488                 case 0x191: map_key_clear(KEY_FINANCE);         break;
 489                 case 0x192: map_key_clear(KEY_CALC);            break;
 490                 case 0x194: map_key_clear(KEY_FILE);            break;
 491                 case 0x196: map_key_clear(KEY_WWW);             break;
 492                 case 0x199: map_key_clear(KEY_CHAT);            break;
 493                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
 494                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
 495                 case 0x1a6: map_key_clear(KEY_HELP);            break;
 496                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
 497                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
 498                 case 0x1b6: map_key_clear(KEY_MEDIA);           break;
 499                 case 0x1b7: map_key_clear(KEY_SOUND);           break;
 500                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
 501                 case 0x1bd: map_key_clear(KEY_INFO);            break;
 502                 case 0x201: map_key_clear(KEY_NEW);             break;
 503                 case 0x202: map_key_clear(KEY_OPEN);            break;
 504                 case 0x203: map_key_clear(KEY_CLOSE);           break;
 505                 case 0x204: map_key_clear(KEY_EXIT);            break;
 506                 case 0x207: map_key_clear(KEY_SAVE);            break;
 507                 case 0x208: map_key_clear(KEY_PRINT);           break;
 508                 case 0x209: map_key_clear(KEY_PROPS);           break;
 509                 case 0x21a: map_key_clear(KEY_UNDO);            break;
 510                 case 0x21b: map_key_clear(KEY_COPY);            break;
 511                 case 0x21c: map_key_clear(KEY_CUT);             break;
 512                 case 0x21d: map_key_clear(KEY_PASTE);           break;
 513                 case 0x21f: map_key_clear(KEY_FIND);            break;
 514                 case 0x221: map_key_clear(KEY_SEARCH);          break;
 515                 case 0x222: map_key_clear(KEY_GOTO);            break;
 516                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
 517                 case 0x224: map_key_clear(KEY_BACK);            break;
 518                 case 0x225: map_key_clear(KEY_FORWARD);         break;
 519                 case 0x226: map_key_clear(KEY_STOP);            break;
 520                 case 0x227: map_key_clear(KEY_REFRESH);         break;
 521                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
 522                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
 523                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
 524                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
 525                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
 526                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
 527                 case 0x238: map_rel(REL_HWHEEL);                break;
 528                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
 529                 case 0x279: map_key_clear(KEY_REDO);            break;
 530
 531                 case 0x289: map_key_clear(KEY_REPLY);           break;
 532                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
 533                 case 0x28c: map_key_clear(KEY_SEND);            break;
 534
 535                 default:    goto ignore;
 536                 }
 537                 break;
 538
 539         case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 540                 set_bit(EV_REP, input->evbit);
 541                 switch (usage->hid & HID_USAGE) {
 542                 case 0x021: map_key_clear(KEY_PRINT);           break;
 543                 case 0x070: map_key_clear(KEY_HP);              break;
 544                 case 0x071: map_key_clear(KEY_CAMERA);          break;
 545                 case 0x072: map_key_clear(KEY_SOUND);           break;
 546                 case 0x073: map_key_clear(KEY_QUESTION);        break;
 547                 case 0x080: map_key_clear(KEY_EMAIL);           break;
 548                 case 0x081: map_key_clear(KEY_CHAT);            break;
 549                 case 0x082: map_key_clear(KEY_SEARCH);          break;
 550                 case 0x083: map_key_clear(KEY_CONNECT);         break;
 551                 case 0x084: map_key_clear(KEY_FINANCE);         break;
 552                 case 0x085: map_key_clear(KEY_SPORT);           break;
 553                 case 0x086: map_key_clear(KEY_SHOP);            break;
 554                 default:    goto ignore;
 555                 }
 556                 break;
 557
 558         case HID_UP_MSVENDOR:
 559                 goto ignore;
 560
 561         case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
 562                 set_bit(EV_REP, input->evbit);
 563                 goto ignore;
 564
 565         case HID_UP_LOGIVENDOR:
 566                 goto ignore;
 567
 568         case HID_UP_PID:
 569                 switch (usage->hid & HID_USAGE) {
 570                 case 0xa4: map_key_clear(BTN_DEAD);     break;
 571                 default: goto ignore;
 572                 }
 573                 break;
 574
 575         default:
 576         unknown:
 577                 if (field->report_size == 1) {
 578                         if (field->report->type == HID_OUTPUT_REPORT) {
 579                                 map_led(LED_MISC);
 580                                 break;
 581                         }
 582                         map_key(BTN_MISC);
 583                         break;
 584                 }
 585                 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 586                         map_rel(REL_MISC);
 587                         break;
 588                 }
 589                 map_abs(ABS_MISC);
 590                 break;
 591         }
 592
 593 mapped:
 594         if (device->driver->input_mapped && device->driver->input_mapped(device,
 595                                 hidinput, field, usage, &bit, &max) < 0)
 596                 goto ignore;
 597
 598         set_bit(usage->type, input->evbit);
 599
 600         while (usage->code <= max && test_and_set_bit(usage->code, bit))
 601                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 602
 603         if (usage->code > max)
 604                 goto ignore;
 605
 606
 607         if (usage->type == EV_ABS) {
 608
 609                 int a = field->logical_minimum;
 610                 int b = field->logical_maximum;
 611
 612                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 613                         a = field->logical_minimum = 0;
 614                         b = field->logical_maximum = 255;
 615                 }
 616
 617                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
 618                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 619                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
 620
 621                 input_abs_set_res(input, usage->code,
 622                                   hidinput_calc_abs_res(field, usage->code));
 623
 624                 /* use a larger default input buffer for MT devices */
 625                 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
 626                         input_set_events_per_packet(input, 60);
 627         }
 628
 629         if (usage->type == EV_ABS &&
 630             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
 631                 int i;
 632                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 633                         input_set_abs_params(input, i, -1, 1, 0, 0);
 634                         set_bit(i, input->absbit);
 635                 }
 636                 if (usage->hat_dir && !field->dpad)
 637                         field->dpad = usage->code;
 638         }
 639
 640         /* for those devices which produce Consumer volume usage as relative,
 641          * we emulate pressing volumeup/volumedown appropriate number of times
 642          * in hidinput_hid_event()
 643          */
 644         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 645                         (usage->code == ABS_VOLUME)) {
 646                 set_bit(KEY_VOLUMEUP, input->keybit);
 647                 set_bit(KEY_VOLUMEDOWN, input->keybit);
 648         }
 649
 650         if (usage->type == EV_KEY) {
 651                 set_bit(EV_MSC, input->evbit);
 652                 set_bit(MSC_SCAN, input->mscbit);
 653         }
 654
 655 ignore:
 656         return;
 657
 658 }
 659
 660 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
 661 {
 662         struct input_dev *input;
 663         unsigned *quirks = &hid->quirks;
 664
 665         if (!field->hidinput)
 666                 return;
 667
 668         input = field->hidinput->input;
 669
 670         if (!usage->type)
 671                 return;
 672
 673         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
 674                 int hat_dir = usage->hat_dir;
 675                 if (!hat_dir)
 676                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 677                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
 678                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
 679                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
 680                 return;
 681         }
 682
 683         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 684                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
 685                 return;
 686         }
 687
 688         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
 689                 if (value) {
 690                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
 691                         return;
 692                 }
 693                 input_event(input, usage->type, usage->code, 0);
 694                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
 695                 return;
 696         }
 697
 698         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
 699                 int a = field->logical_minimum;
 700                 int b = field->logical_maximum;
 701                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
 702         }
 703
 704         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
 705                 dbg_hid("Maximum Effects - %d\n",value);
 706                 return;
 707         }
 708
 709         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
 710                 dbg_hid("PID Pool Report\n");
 711                 return;
 712         }
 713
 714         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
 715                 return;
 716
 717         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 718                         (usage->code == ABS_VOLUME)) {
 719                 int count = abs(value);
 720                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
 721                 int i;
 722
 723                 for (i = 0; i < count; i++) {
 724                         input_event(input, EV_KEY, direction, 1);
 725                         input_sync(input);
 726                         input_event(input, EV_KEY, direction, 0);
 727                         input_sync(input);
 728                 }
 729                 return;
 730         }
 731
 732         /* report the usage code as scancode if the key status has changed */
 733         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
 734                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
 735
 736         input_event(input, usage->type, usage->code, value);
 737
 738         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
 739                 input_event(input, usage->type, usage->code, 0);
 740 }
 741
 742 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
 743 {
 744         struct hid_input *hidinput;
 745
 746         if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
 747                 return;
 748
 749         list_for_each_entry(hidinput, &hid->inputs, list)
 750                 input_sync(hidinput->input);
 751 }
 752 EXPORT_SYMBOL_GPL(hidinput_report_event);
 753
 754 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
 755 {
 756         struct hid_report *report;
 757         int i, j;
 758
 759         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
 760                 for (i = 0; i < report->maxfield; i++) {
 761                         *field = report->field[i];
 762                         for (j = 0; j < (*field)->maxusage; j++)
 763                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
 764                                         return j;
 765                 }
 766         }
 767         return -1;
 768 }
 769 EXPORT_SYMBOL_GPL(hidinput_find_field);
 770
 771 static int hidinput_open(struct input_dev *dev)
 772 {
 773         struct hid_device *hid = input_get_drvdata(dev);
 774
 775         return hid->ll_driver->open(hid);
 776 }
 777
 778 static void hidinput_close(struct input_dev *dev)
 779 {
 780         struct hid_device *hid = input_get_drvdata(dev);
 781
 782         hid->ll_driver->close(hid);
 783 }
 784
 785 /*
 786  * Register the input device; print a message.
 787  * Configure the input layer interface
 788  * Read all reports and initialize the absolute field values.
 789  */
 790
 791 int hidinput_connect(struct hid_device *hid, unsigned int force)
 792 {
 793         struct hid_report *report;
 794         struct hid_input *hidinput = NULL;
 795         struct input_dev *input_dev;
 796         int i, j, k;
 797         int max_report_type = HID_OUTPUT_REPORT;
 798
 799         INIT_LIST_HEAD(&hid->inputs);
 800
 801         if (!force) {
 802                 for (i = 0; i < hid->maxcollection; i++) {
 803                         struct hid_collection *col = &hid->collection[i];
 804                         if (col->type == HID_COLLECTION_APPLICATION ||
 805                                         col->type == HID_COLLECTION_PHYSICAL)
 806                                 if (IS_INPUT_APPLICATION(col->usage))
 807                                         break;
 808                 }
 809
 810                 if (i == hid->maxcollection)
 811                         return -1;
 812         }
 813
 814         if (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
 815                 max_report_type = HID_INPUT_REPORT;
 816
 817         for (k = HID_INPUT_REPORT; k <= max_report_type; k++)
 818                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 819
 820                         if (!report->maxfield)
 821                                 continue;
 822
 823                         if (!hidinput) {
 824                                 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
 825                                 input_dev = input_allocate_device();
 826                                 if (!hidinput || !input_dev) {
 827                                         kfree(hidinput);
 828                                         input_free_device(input_dev);
 829                                         err_hid("Out of memory during hid input probe");
 830                                         goto out_unwind;
 831                                 }
 832
 833                                 input_set_drvdata(input_dev, hid);
 834                                 input_dev->event =
 835                                         hid->ll_driver->hidinput_input_event;
 836                                 input_dev->open = hidinput_open;
 837                                 input_dev->close = hidinput_close;
 838                                 input_dev->setkeycode = hidinput_setkeycode;
 839                                 input_dev->getkeycode = hidinput_getkeycode;
 840
 841                                 input_dev->name = hid->name;
 842                                 input_dev->phys = hid->phys;
 843                                 input_dev->uniq = hid->uniq;
 844                                 input_dev->id.bustype = hid->bus;
 845                                 input_dev->id.vendor  = hid->vendor;
 846                                 input_dev->id.product = hid->product;
 847                                 input_dev->id.version = hid->version;
 848                                 input_dev->dev.parent = hid->dev.parent;
 849                                 hidinput->input = input_dev;
 850                                 list_add_tail(&hidinput->list, &hid->inputs);
 851                         }
 852
 853                         for (i = 0; i < report->maxfield; i++)
 854                                 for (j = 0; j < report->field[i]->maxusage; j++)
 855                                         hidinput_configure_usage(hidinput, report->field[i],
 856                                                                  report->field[i]->usage + j);
 857
 858                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
 859                                 /* This will leave hidinput NULL, so that it
 860                                  * allocates another one if we have more inputs on
 861                                  * the same interface. Some devices (e.g. Happ's
 862                                  * UGCI) cram a lot of unrelated inputs into the
 863                                  * same interface. */
 864                                 hidinput->report = report;
 865                                 if (input_register_device(hidinput->input))
 866                                         goto out_cleanup;
 867                                 hidinput = NULL;
 868                         }
 869                 }
 870
 871         if (hidinput && input_register_device(hidinput->input))
 872                 goto out_cleanup;
 873
 874         return 0;
 875
 876 out_cleanup:
 877         input_free_device(hidinput->input);
 878         kfree(hidinput);
 879 out_unwind:
 880         /* unwind the ones we already registered */
 881         hidinput_disconnect(hid);
 882
 883         return -1;
 884 }
 885 EXPORT_SYMBOL_GPL(hidinput_connect);
 886
 887 void hidinput_disconnect(struct hid_device *hid)
 888 {
 889         struct hid_input *hidinput, *next;
 890
 891         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
 892                 list_del(&hidinput->list);
 893                 input_unregister_device(hidinput->input);
 894                 kfree(hidinput);
 895         }
 896 }
 897 EXPORT_SYMBOL_GPL(hidinput_disconnect);
 898