drivers/usb/input/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  *
   6  *  USB HID to Linux Input mapping
   7  */
   8
   9 /*
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  23  *
  24  * Should you need to contact me, the author, you can do so either by
  25  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  26  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  27  */
  28
  29 #include <linux/module.h>
  30 #include <linux/slab.h>
  31 #include <linux/kernel.h>
  32 #include <linux/input.h>
  33 #include <linux/usb.h>
  34
  35 #include "hid.h"
  36
  37 #define unk     KEY_UNKNOWN
  38
  39 static unsigned char hid_keyboard[256] = {
  40           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  41          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  42           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  43          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  44          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  45         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  46          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  47         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  48         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  49         122,123, 90, 91, 85,unk,unk,unk,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         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  53         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  54          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  55         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  56 };
  57
  58 static struct {
  59         __s32 x;
  60         __s32 y;
  61 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  62
  63 static struct input_dev *find_input(struct hid_device *hid, struct hid_field *field)
  64 {
  65         struct list_head *lh;
  66         struct hid_input *hidinput;
  67
  68         list_for_each (lh, &hid->inputs) {
  69                 int i;
  70
  71                 hidinput = list_entry(lh, struct hid_input, list);
  72
  73                 if (! hidinput->report)
  74                         continue;
  75
  76                 for (i = 0; i < hidinput->report->maxfield; i++)
  77                         if (hidinput->report->field[i] == field)
  78                                 return &hidinput->input;
  79         }
  80
  81         /* Assume we only have one input and use it */
  82         if (!list_empty(&hid->inputs)) {
  83                 hidinput = list_entry(hid->inputs.next, struct hid_input, list);
  84                 return &hidinput->input;
  85         }
  86
  87         /* This is really a bug */
  88         return NULL;
  89 }
  90
  91 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
  92                                      struct hid_usage *usage)
  93 {
  94         struct input_dev *input = &hidinput->input;
  95         struct hid_device *device = hidinput->input.private;
  96         int max;
  97         int is_abs = 0;
  98         unsigned long *bit;
  99
 100         switch (usage->hid & HID_USAGE_PAGE) {
 101
 102                 case HID_UP_KEYBOARD:
 103
 104                         set_bit(EV_REP, input->evbit);
 105                         usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 106
 107                         if ((usage->hid & HID_USAGE) < 256) {
 108                                 if (!(usage->code = hid_keyboard[usage->hid & HID_USAGE]))
 109                                         return;
 110                                 clear_bit(usage->code, bit);
 111                         } else
 112                                 usage->code = KEY_UNKNOWN;
 113
 114                         break;
 115
 116                 case HID_UP_BUTTON:
 117
 118                         usage->code = ((usage->hid - 1) & 0xf) + 0x100;
 119                         usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 120
 121                         switch (field->application) {
 122                                 case HID_GD_GAMEPAD:  usage->code += 0x10;
 123                                 case HID_GD_JOYSTICK: usage->code += 0x10;
 124                                 case HID_GD_MOUSE:    usage->code += 0x10; break;
 125                                 default:
 126                                         if (field->physical == HID_GD_POINTER)
 127                                                 usage->code += 0x10;
 128                                         break;
 129                         }
 130                         break;
 131
 132                 case HID_UP_GENDESK:
 133
 134                         if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 135                                 switch (usage->hid & 0xf) {
 136                                         case 0x1: usage->code = KEY_POWER;  break;
 137                                         case 0x2: usage->code = KEY_SLEEP;  break;
 138                                         case 0x3: usage->code = KEY_WAKEUP; break;
 139                                         default: usage->code = KEY_UNKNOWN; break;
 140                                 }
 141                                 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 142                                 break;
 143                         }
 144
 145                         usage->code = usage->hid & 0xf;
 146
 147                         if (field->report_size == 1) {
 148                                 usage->code = BTN_MISC;
 149                                 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 150                                 break;
 151                         }
 152
 153                         if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 154                                 usage->type = EV_REL; bit = input->relbit; max = REL_MAX;
 155                                 break;
 156                         }
 157
 158                         usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
 159
 160                         if (usage->hid == HID_GD_HATSWITCH) {
 161                                 usage->code = ABS_HAT0X;
 162                                 usage->hat_min = field->logical_minimum;
 163                                 usage->hat_max = field->logical_maximum;
 164                         }
 165                         break;
 166
 167                 case HID_UP_LED:
 168
 169                         usage->code = (usage->hid - 1) & 0xf;
 170                         usage->type = EV_LED; bit = input->ledbit; max = LED_MAX;
 171                         break;
 172
 173                 case HID_UP_DIGITIZER:
 174
 175                         switch (usage->hid & 0xff) {
 176
 177                                 case 0x30: /* TipPressure */
 178
 179                                         if (!test_bit(BTN_TOUCH, input->keybit)) {
 180                                                 device->quirks |= HID_QUIRK_NOTOUCH;
 181                                                 set_bit(EV_KEY, input->evbit);
 182                                                 set_bit(BTN_TOUCH, input->keybit);
 183                                         }
 184                                         usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
 185                                         usage->code = ABS_PRESSURE;
 186                                         clear_bit(usage->code, bit);
 187                                         break;
 188
 189                                 case 0x32: /* InRange */
 190
 191                                         usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 192                                         switch (field->physical & 0xff) {
 193                                                 case 0x21: usage->code = BTN_TOOL_MOUSE; break;
 194                                                 case 0x22: usage->code = BTN_TOOL_FINGER; break;
 195                                                 default: usage->code = BTN_TOOL_PEN; break;
 196                                         }
 197                                         break;
 198
 199                                 case 0x3c: /* Invert */
 200
 201                                         usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 202                                         usage->code = BTN_TOOL_RUBBER;
 203                                         clear_bit(usage->code, bit);
 204                                         break;
 205
 206                                 case 0x33: /* Touch */
 207                                 case 0x42: /* TipSwitch */
 208                                 case 0x43: /* TipSwitch2 */
 209
 210                                         device->quirks &= ~HID_QUIRK_NOTOUCH;
 211                                         usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 212                                         usage->code = BTN_TOUCH;
 213                                         clear_bit(usage->code, bit);
 214                                         break;
 215
 216                                 case 0x44: /* BarrelSwitch */
 217
 218                                         usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 219                                         usage->code = BTN_STYLUS;
 220                                         clear_bit(usage->code, bit);
 221                                         break;
 222
 223                                 default:  goto unknown;
 224                         }
 225                         break;
 226
 227                 case HID_UP_CONSUMER:   /* USB HUT v1.1, pages 56-62 */
 228
 229                         set_bit(EV_REP, input->evbit);
 230                         switch (usage->hid & HID_USAGE) {
 231                                 case 0x000: usage->code = 0; break;
 232                                 case 0x034: usage->code = KEY_SLEEP;            break;
 233                                 case 0x036: usage->code = BTN_MISC;             break;
 234                                 case 0x08a: usage->code = KEY_WWW;              break;
 235                                 case 0x095: usage->code = KEY_HELP;             break;
 236
 237                                 case 0x0b0: usage->code = KEY_PLAY;             break;
 238                                 case 0x0b1: usage->code = KEY_PAUSE;            break;
 239                                 case 0x0b2: usage->code = KEY_RECORD;           break;
 240                                 case 0x0b3: usage->code = KEY_FASTFORWARD;      break;
 241                                 case 0x0b4: usage->code = KEY_REWIND;           break;
 242                                 case 0x0b5: usage->code = KEY_NEXTSONG;         break;
 243                                 case 0x0b6: usage->code = KEY_PREVIOUSSONG;     break;
 244                                 case 0x0b7: usage->code = KEY_STOPCD;           break;
 245                                 case 0x0b8: usage->code = KEY_EJECTCD;          break;
 246                                 case 0x0cd: usage->code = KEY_PLAYPAUSE;        break;
 247                                 case 0x0e0: is_abs = 1;
 248                                             usage->code = ABS_VOLUME;
 249                                             break;
 250                                 case 0x0e2: usage->code = KEY_MUTE;             break;
 251                                 case 0x0e5: usage->code = KEY_BASSBOOST;        break;
 252                                 case 0x0e9: usage->code = KEY_VOLUMEUP;         break;
 253                                 case 0x0ea: usage->code = KEY_VOLUMEDOWN;       break;
 254
 255                                 case 0x183: usage->code = KEY_CONFIG;           break;
 256                                 case 0x18a: usage->code = KEY_MAIL;             break;
 257                                 case 0x192: usage->code = KEY_CALC;             break;
 258                                 case 0x194: usage->code = KEY_FILE;             break;
 259                                 case 0x21a: usage->code = KEY_UNDO;             break;
 260                                 case 0x21b: usage->code = KEY_COPY;             break;
 261                                 case 0x21c: usage->code = KEY_CUT;              break;
 262                                 case 0x21d: usage->code = KEY_PASTE;            break;
 263
 264                                 case 0x221: usage->code = KEY_FIND;             break;
 265                                 case 0x223: usage->code = KEY_HOMEPAGE;         break;
 266                                 case 0x224: usage->code = KEY_BACK;             break;
 267                                 case 0x225: usage->code = KEY_FORWARD;          break;
 268                                 case 0x226: usage->code = KEY_STOP;             break;
 269                                 case 0x227: usage->code = KEY_REFRESH;          break;
 270                                 case 0x22a: usage->code = KEY_BOOKMARKS;        break;
 271
 272                                 default:    usage->code = KEY_UNKNOWN;          break;
 273                         }
 274
 275                         if (is_abs) {
 276                                 usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
 277                         } else  {
 278                                 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 279                         }
 280                         break;
 281
 282                 case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 283
 284                         set_bit(EV_REP, input->evbit);
 285                         switch (usage->hid & HID_USAGE) {
 286                                 case 0x021: usage->code = KEY_PRINT;            break;
 287                                 case 0x070: usage->code = KEY_HP;               break;
 288                                 case 0x071: usage->code = KEY_CAMERA;           break;
 289                                 case 0x072: usage->code = KEY_SOUND;            break;
 290                                 case 0x073: usage->code = KEY_QUESTION;         break;
 291
 292                                 case 0x080: usage->code = KEY_EMAIL;            break;
 293                                 case 0x081: usage->code = KEY_CHAT;             break;
 294                                 case 0x082: usage->code = KEY_SEARCH;           break;
 295                                 case 0x083: usage->code = KEY_CONNECT;          break;
 296                                 case 0x084: usage->code = KEY_FINANCE;          break;
 297                                 case 0x085: usage->code = KEY_SPORT;            break;
 298                                 case 0x086: usage->code = KEY_SHOP;             break;
 299
 300                                 default:    usage->code = KEY_UNKNOWN;          break;
 301
 302                         }
 303
 304                         usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 305                         break;
 306
 307                 case HID_UP_PID:
 308
 309                         usage->type = EV_FF; bit = input->ffbit; max = FF_MAX;
 310
 311                         switch(usage->hid & HID_USAGE) {
 312                                 case 0x26: set_bit(FF_CONSTANT, input->ffbit); break;
 313                                 case 0x27: set_bit(FF_RAMP,     input->ffbit); break;
 314                                 case 0x28: set_bit(FF_CUSTOM,   input->ffbit); break;
 315                                 case 0x30: set_bit(FF_SQUARE,   input->ffbit);
 316                                            set_bit(FF_PERIODIC, input->ffbit); break;
 317                                 case 0x31: set_bit(FF_SINE,     input->ffbit);
 318                                            set_bit(FF_PERIODIC, input->ffbit); break;
 319                                 case 0x32: set_bit(FF_TRIANGLE, input->ffbit);
 320                                            set_bit(FF_PERIODIC, input->ffbit); break;
 321                                 case 0x33: set_bit(FF_SAW_UP,   input->ffbit);
 322                                            set_bit(FF_PERIODIC, input->ffbit); break;
 323                                 case 0x34: set_bit(FF_SAW_DOWN, input->ffbit);
 324                                            set_bit(FF_PERIODIC, input->ffbit); break;
 325                                 case 0x40: set_bit(FF_SPRING,   input->ffbit); break;
 326                                 case 0x41: set_bit(FF_DAMPER,   input->ffbit); break;
 327                                 case 0x42: set_bit(FF_INERTIA , input->ffbit); break;
 328                                 case 0x43: set_bit(FF_FRICTION, input->ffbit); break;
 329                                 case 0x7e: usage->code = FF_GAIN;       break;
 330                                 case 0x83:  /* Simultaneous Effects Max */
 331                                         input->ff_effects_max = (field->value[0]);
 332                                         dbg("Maximum Effects - %d",input->ff_effects_max);
 333                                         break;
 334                                 case 0x98:  /* Device Control */
 335                                         usage->code = FF_AUTOCENTER;    break;
 336                                 case 0xa4:  /* Safety Switch */
 337                                         usage->code = BTN_DEAD;
 338                                         bit = input->keybit;
 339                                         usage->type = EV_KEY;
 340                                         max = KEY_MAX;
 341                                         dbg("Safety Switch Report\n");
 342                                         break;
 343                                 case 0x9f: /* Device Paused */
 344                                 case 0xa0: /* Actuators Enabled */
 345                                         dbg("Not telling the input API about ");
 346                                         resolv_usage(usage->hid);
 347                                         return;
 348                         }
 349                         break;
 350                 default:
 351                 unknown:
 352                         resolv_usage(usage->hid);
 353
 354                         if (field->report_size == 1) {
 355
 356                                 if (field->report->type == HID_OUTPUT_REPORT) {
 357                                         usage->code = LED_MISC;
 358                                         usage->type = EV_LED; bit = input->ledbit; max = LED_MAX;
 359                                         break;
 360                                 }
 361
 362                                 usage->code = BTN_MISC;
 363                                 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
 364                                 break;
 365                         }
 366
 367                         if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 368                                 usage->code = REL_MISC;
 369                                 usage->type = EV_REL; bit = input->relbit; max = REL_MAX;
 370                                 break;
 371                         }
 372
 373                         usage->code = ABS_MISC;
 374                         usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
 375                         break;
 376         }
 377
 378         set_bit(usage->type, input->evbit);
 379         if ((usage->type == EV_REL)
 380                         && (device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_BACK
 381                                 | HID_QUIRK_2WHEEL_MOUSE_HACK_EXTRA))
 382                         && (usage->code == REL_WHEEL)) {
 383                 set_bit(REL_HWHEEL, bit);
 384         }
 385
 386         while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
 387                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 388         }
 389
 390         if (usage->code > max)
 391                 return;
 392
 393         if (usage->type == EV_ABS) {
 394                 int a = field->logical_minimum;
 395                 int b = field->logical_maximum;
 396
 397                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 398                         a = field->logical_minimum = 0;
 399                         b = field->logical_maximum = 255;
 400                 }
 401
 402                 input->absmin[usage->code] = a;
 403                 input->absmax[usage->code] = b;
 404                 input->absfuzz[usage->code] = 0;
 405                 input->absflat[usage->code] = 0;
 406
 407                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) {
 408                         input->absfuzz[usage->code] = (b - a) >> 8;
 409                         input->absflat[usage->code] = (b - a) >> 4;
 410                 }
 411         }
 412
 413         if (usage->hat_min != usage->hat_max) {
 414                 int i;
 415                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 416                         input->absmax[i] = 1;
 417                         input->absmin[i] = -1;
 418                         input->absfuzz[i] = 0;
 419                         input->absflat[i] = 0;
 420                 }
 421                 set_bit(usage->code + 1, input->absbit);
 422         }
 423 }
 424
 425 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
 426 {
 427         struct input_dev *input = find_input(hid, field);
 428         int *quirks = &hid->quirks;
 429
 430         if (!input)
 431                 return;
 432
 433         input_regs(input, regs);
 434
 435         if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_EXTRA) && (usage->code == BTN_EXTRA))
 436                 || ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_BACK) && (usage->code == BTN_BACK))) {
 437                 if (value)
 438                         hid->quirks |= HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
 439                 else
 440                         hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
 441                 return;
 442         }
 443
 444         if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON)
 445                         && (usage->code == REL_WHEEL)) {
 446                 input_event(input, usage->type, REL_HWHEEL, value);
 447                 return;
 448         }
 449
 450         if (usage->hat_min != usage->hat_max ) { /* FIXME: hat_max can be 0 and hat_min 1 */
 451                 value = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 452                 if (value < 0 || value > 8) value = 0;
 453                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[value].x);
 454                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[value].y);
 455                 return;
 456         }
 457
 458         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 459                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
 460                 return;
 461         }
 462
 463         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
 464                 if (value) {
 465                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
 466                         return;
 467                 }
 468                 input_event(input, usage->type, usage->code, 0);
 469                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
 470                 return;
 471         }
 472
 473         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
 474                 int a = field->logical_minimum;
 475                 int b = field->logical_maximum;
 476                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
 477         }
 478
 479         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
 480                 input->ff_effects_max = value;
 481                 dbg("Maximum Effects - %d",input->ff_effects_max);
 482                 return;
 483         }
 484         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
 485                 dbg("PID Pool Report\n");
 486                 return;
 487         }
 488
 489         if((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
 490                 return;
 491
 492         input_event(input, usage->type, usage->code, value);
 493
 494         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
 495                 input_event(input, usage->type, usage->code, 0);
 496 }
 497
 498 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
 499 {
 500         struct list_head *lh;
 501         struct hid_input *hidinput;
 502
 503         list_for_each (lh, &hid->inputs) {
 504                 hidinput = list_entry(lh, struct hid_input, list);
 505                 input_sync(&hidinput->input);
 506         }
 507 }
 508
 509 static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 510 {
 511         struct hid_device *hid = dev->private;
 512         struct hid_field *field = NULL;
 513         int offset;
 514
 515         if (type == EV_FF)
 516                 return hid_ff_event(hid, dev, type, code, value);
 517
 518         if ((offset = hid_find_field(hid, type, code, &field)) == -1) {
 519                 warn("event field not found");
 520                 return -1;
 521         }
 522
 523         hid_set_field(field, offset, value);
 524         hid_submit_report(hid, field->report, USB_DIR_OUT);
 525
 526         return 0;
 527 }
 528
 529 static int hidinput_open(struct input_dev *dev)
 530 {
 531         struct hid_device *hid = dev->private;
 532         return hid_open(hid);
 533 }
 534
 535 static void hidinput_close(struct input_dev *dev)
 536 {
 537         struct hid_device *hid = dev->private;
 538         hid_close(hid);
 539 }
 540
 541 /*
 542  * Register the input device; print a message.
 543  * Configure the input layer interface
 544  * Read all reports and initialize the absolute field values.
 545  */
 546
 547 int hidinput_connect(struct hid_device *hid)
 548 {
 549         struct usb_device *dev = hid->dev;
 550         struct hid_report_enum *report_enum;
 551         struct hid_report *report;
 552         struct list_head *list;
 553         struct hid_input *hidinput = NULL;
 554         int i, j, k;
 555
 556         INIT_LIST_HEAD(&hid->inputs);
 557
 558         for (i = 0; i < hid->maxcollection; i++)
 559                 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
 560                     IS_INPUT_APPLICATION(hid->collection[i].usage))
 561                         break;
 562
 563         if (i == hid->maxcollection)
 564                 return -1;
 565
 566         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
 567                 report_enum = hid->report_enum + k;
 568                 list = report_enum->report_list.next;
 569                 while (list != &report_enum->report_list) {
 570                         report = (struct hid_report *) list;
 571
 572                         if (!report->maxfield) {
 573                                 list = list->next;
 574                                 continue;
 575                         }
 576
 577                         if (!hidinput) {
 578                                 hidinput = kmalloc(sizeof(*hidinput), GFP_KERNEL);
 579                                 if (!hidinput) {
 580                                         err("Out of memory during hid input probe");
 581                                         return -1;
 582                                 }
 583                                 memset(hidinput, 0, sizeof(*hidinput));
 584
 585                                 list_add_tail(&hidinput->list, &hid->inputs);
 586
 587                                 hidinput->input.private = hid;
 588                                 hidinput->input.event = hidinput_input_event;
 589                                 hidinput->input.open = hidinput_open;
 590                                 hidinput->input.close = hidinput_close;
 591
 592                                 hidinput->input.name = hid->name;
 593                                 hidinput->input.phys = hid->phys;
 594                                 hidinput->input.uniq = hid->uniq;
 595                                 hidinput->input.id.bustype = BUS_USB;
 596                                 hidinput->input.id.vendor = dev->descriptor.idVendor;
 597                                 hidinput->input.id.product = dev->descriptor.idProduct;
 598                                 hidinput->input.id.version = dev->descriptor.bcdDevice;
 599                                 hidinput->input.dev = &hid->intf->dev;
 600                         }
 601
 602                         for (i = 0; i < report->maxfield; i++)
 603                                 for (j = 0; j < report->field[i]->maxusage; j++)
 604                                         hidinput_configure_usage(hidinput, report->field[i],
 605                                                                  report->field[i]->usage + j);
 606
 607                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
 608                                 /* This will leave hidinput NULL, so that it
 609                                  * allocates another one if we have more inputs on
 610                                  * the same interface. Some devices (e.g. Happ's
 611                                  * UGCI) cram a lot of unrelated inputs into the
 612                                  * same interface. */
 613                                 hidinput->report = report;
 614                                 input_register_device(&hidinput->input);
 615                                 hidinput = NULL;
 616                         }
 617
 618                         list = list->next;
 619                 }
 620         }
 621
 622         /* This only gets called when we are a single-input (most of the
 623          * time). IOW, not a HID_QUIRK_MULTI_INPUT. The hid_ff_init() is
 624          * only useful in this case, and not for multi-input quirks. */
 625         if (hidinput) {
 626                 hid_ff_init(hid);
 627                 input_register_device(&hidinput->input);
 628         }
 629
 630         return 0;
 631 }
 632
 633 void hidinput_disconnect(struct hid_device *hid)
 634 {
 635         struct list_head *lh, *next;
 636         struct hid_input *hidinput;
 637
 638         list_for_each_safe (lh, next, &hid->inputs) {
 639                 hidinput = list_entry(lh, struct hid_input, list);
 640                 input_unregister_device(&hidinput->input);
 641                 list_del(&hidinput->list);
 642                 kfree(hidinput);
 643         }
 644 }