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 #undef DEBUG
  36
  37 #include "hid.h"
  38
  39 #define unk     KEY_UNKNOWN
  40
  41 static unsigned char hid_keyboard[256] = {
  42           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  43          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  44           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  45          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  46          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  47         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  48          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  49         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  50         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  51         122,123, 90, 91, 85,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         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  55         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  56          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  57         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  58 };
  59
  60 static struct {
  61         __s32 x;
  62         __s32 y;
  63 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  64
  65 #define map_abs(c)      do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0)
  66 #define map_rel(c)      do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
  67 #define map_key(c)      do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
  68 #define map_led(c)      do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
  69 #define map_ff(c)       do { usage->code = c; usage->type = EV_FF;  bit = input->ffbit;  max =  FF_MAX; } while (0)
  70
  71 #define map_abs_clear(c)        do { map_abs(c); clear_bit(c, bit); } while (0)
  72 #define map_key_clear(c)        do { map_key(c); clear_bit(c, bit); } while (0)
  73 #define map_ff_effect(c)        do { set_bit(c, input->ffbit); } while (0)
  74
  75 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
  76                                      struct hid_usage *usage)
  77 {
  78         struct input_dev *input = &hidinput->input;
  79         struct hid_device *device = hidinput->input.private;
  80         int max, code;
  81         unsigned long *bit;
  82
  83         field->hidinput = hidinput;
  84
  85 #ifdef DEBUG
  86         printk(KERN_DEBUG "Mapping: ");
  87         resolv_usage(usage->hid);
  88         printk(" ---> ");
  89 #endif
  90
  91         if (field->flags & HID_MAIN_ITEM_CONSTANT)
  92                 goto ignore;
  93
  94         switch (usage->hid & HID_USAGE_PAGE) {
  95
  96                 case HID_UP_UNDEFINED:
  97                         goto ignore;
  98
  99                 case HID_UP_KEYBOARD:
 100
 101                         set_bit(EV_REP, input->evbit);
 102
 103                         if ((usage->hid & HID_USAGE) < 256) {
 104                                 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
 105                                 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
 106                         } else
 107                                 map_key(KEY_UNKNOWN);
 108
 109                         break;
 110
 111                 case HID_UP_BUTTON:
 112
 113                         code = ((usage->hid - 1) & 0xf);
 114
 115                         switch (field->application) {
 116                                 case HID_GD_MOUSE:
 117                                 case HID_GD_POINTER:  code += 0x110; break;
 118                                 case HID_GD_JOYSTICK: code += 0x120; break;
 119                                 case HID_GD_GAMEPAD:  code += 0x130; break;
 120                                 default:
 121                                         switch (field->physical) {
 122                                                 case HID_GD_MOUSE:
 123                                                 case HID_GD_POINTER:  code += 0x110; break;
 124                                                 case HID_GD_JOYSTICK: code += 0x120; break;
 125                                                 case HID_GD_GAMEPAD:  code += 0x130; break;
 126                                                 default:              code += 0x100;
 127                                         }
 128                         }
 129
 130                         map_key(code);
 131                         break;
 132
 133                 case HID_UP_GENDESK:
 134
 135                         if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 136                                 switch (usage->hid & 0xf) {
 137                                         case 0x1: map_key_clear(KEY_POWER);  break;
 138                                         case 0x2: map_key_clear(KEY_SLEEP);  break;
 139                                         case 0x3: map_key_clear(KEY_WAKEUP); break;
 140                                         default: goto unknown;
 141                                 }
 142                                 break;
 143                         }
 144
 145                         if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
 146                                 switch (usage->hid) {
 147                                         case HID_GD_UP:    usage->hat_dir = 1; break;
 148                                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
 149                                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
 150                                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
 151                                         default: goto unknown;
 152                                 }
 153                                 if (field->dpad) {
 154                                         map_abs(field->dpad);
 155                                         goto ignore;
 156                                 }
 157                                 map_abs(ABS_HAT0X);
 158                                 break;
 159                         }
 160
 161                         switch (usage->hid) {
 162
 163                                 /* These usage IDs map directly to the usage codes. */
 164                                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
 165                                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
 166                                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
 167                                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
 168                                                 map_rel(usage->hid & 0xf);
 169                                         else
 170                                                 map_abs(usage->hid & 0xf);
 171                                         break;
 172
 173                                 case HID_GD_HATSWITCH:
 174                                         usage->hat_min = field->logical_minimum;
 175                                         usage->hat_max = field->logical_maximum;
 176                                         map_abs(ABS_HAT0X);
 177                                         break;
 178
 179                                 case HID_GD_START:      map_key_clear(BTN_START);       break;
 180                                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 181
 182                                 default: goto unknown;
 183                         }
 184
 185                         break;
 186
 187                 case HID_UP_LED:
 188                         map_led((usage->hid - 1) & 0xf);
 189                         break;
 190
 191                 case HID_UP_DIGITIZER:
 192
 193                         switch (usage->hid & 0xff) {
 194
 195                                 case 0x30: /* TipPressure */
 196                                         if (!test_bit(BTN_TOUCH, input->keybit)) {
 197                                                 device->quirks |= HID_QUIRK_NOTOUCH;
 198                                                 set_bit(EV_KEY, input->evbit);
 199                                                 set_bit(BTN_TOUCH, input->keybit);
 200                                         }
 201
 202                                         map_abs_clear(ABS_PRESSURE);
 203                                         break;
 204
 205                                 case 0x32: /* InRange */
 206                                         switch (field->physical & 0xff) {
 207                                                 case 0x21: map_key(BTN_TOOL_MOUSE); break;
 208                                                 case 0x22: map_key(BTN_TOOL_FINGER); break;
 209                                                 default: map_key(BTN_TOOL_PEN); break;
 210                                         }
 211                                         break;
 212
 213                                 case 0x3c: /* Invert */
 214                                         map_key_clear(BTN_TOOL_RUBBER);
 215                                         break;
 216
 217                                 case 0x33: /* Touch */
 218                                 case 0x42: /* TipSwitch */
 219                                 case 0x43: /* TipSwitch2 */
 220                                         device->quirks &= ~HID_QUIRK_NOTOUCH;
 221                                         map_key_clear(BTN_TOUCH);
 222                                         break;
 223
 224                                 case 0x44: /* BarrelSwitch */
 225                                         map_key_clear(BTN_STYLUS);
 226                                         break;
 227
 228                                 default:  goto unknown;
 229                         }
 230                         break;
 231
 232                 case HID_UP_CONSUMER:   /* USB HUT v1.1, pages 56-62 */
 233
 234                         set_bit(EV_REP, input->evbit);
 235                         switch (usage->hid & HID_USAGE) {
 236                                 case 0x000: goto ignore;
 237                                 case 0x034: map_key_clear(KEY_SLEEP);           break;
 238                                 case 0x036: map_key_clear(BTN_MISC);            break;
 239                                 case 0x08a: map_key_clear(KEY_WWW);             break;
 240                                 case 0x095: map_key_clear(KEY_HELP);            break;
 241                                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
 242                                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
 243                                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
 244                                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
 245                                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
 246                                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
 247                                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
 248                                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
 249                                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
 250                                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
 251                                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
 252                                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
 253                                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
 254                                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
 255                                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
 256                                 case 0x183: map_key_clear(KEY_CONFIG);          break;
 257                                 case 0x18a: map_key_clear(KEY_MAIL);            break;
 258                                 case 0x192: map_key_clear(KEY_CALC);            break;
 259                                 case 0x194: map_key_clear(KEY_FILE);            break;
 260                                 case 0x21a: map_key_clear(KEY_UNDO);            break;
 261                                 case 0x21b: map_key_clear(KEY_COPY);            break;
 262                                 case 0x21c: map_key_clear(KEY_CUT);             break;
 263                                 case 0x21d: map_key_clear(KEY_PASTE);           break;
 264                                 case 0x221: map_key_clear(KEY_FIND);            break;
 265                                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
 266                                 case 0x224: map_key_clear(KEY_BACK);            break;
 267                                 case 0x225: map_key_clear(KEY_FORWARD);         break;
 268                                 case 0x226: map_key_clear(KEY_STOP);            break;
 269                                 case 0x227: map_key_clear(KEY_REFRESH);         break;
 270                                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
 271                                 default:    goto unknown;
 272                         }
 273                         break;
 274
 275                 case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 276
 277                         set_bit(EV_REP, input->evbit);
 278                         switch (usage->hid & HID_USAGE) {
 279                                 case 0x021: map_key_clear(KEY_PRINT);           break;
 280                                 case 0x070: map_key_clear(KEY_HP);              break;
 281                                 case 0x071: map_key_clear(KEY_CAMERA);          break;
 282                                 case 0x072: map_key_clear(KEY_SOUND);           break;
 283                                 case 0x073: map_key_clear(KEY_QUESTION);        break;
 284                                 case 0x080: map_key_clear(KEY_EMAIL);           break;
 285                                 case 0x081: map_key_clear(KEY_CHAT);            break;
 286                                 case 0x082: map_key_clear(KEY_SEARCH);          break;
 287                                 case 0x083: map_key_clear(KEY_CONNECT);         break;
 288                                 case 0x084: map_key_clear(KEY_FINANCE);         break;
 289                                 case 0x085: map_key_clear(KEY_SPORT);           break;
 290                                 case 0x086: map_key_clear(KEY_SHOP);            break;
 291                                 default:    goto unknown;
 292                         }
 293                         break;
 294
 295                 case HID_UP_PID:
 296
 297                         set_bit(EV_FF, input->evbit);
 298                         switch(usage->hid & HID_USAGE) {
 299                                 case 0x26: map_ff_effect(FF_CONSTANT);  goto ignore;
 300                                 case 0x27: map_ff_effect(FF_RAMP);      goto ignore;
 301                                 case 0x28: map_ff_effect(FF_CUSTOM);    goto ignore;
 302                                 case 0x30: map_ff_effect(FF_SQUARE);    map_ff_effect(FF_PERIODIC); goto ignore;
 303                                 case 0x31: map_ff_effect(FF_SINE);      map_ff_effect(FF_PERIODIC); goto ignore;
 304                                 case 0x32: map_ff_effect(FF_TRIANGLE);  map_ff_effect(FF_PERIODIC); goto ignore;
 305                                 case 0x33: map_ff_effect(FF_SAW_UP);    map_ff_effect(FF_PERIODIC); goto ignore;
 306                                 case 0x34: map_ff_effect(FF_SAW_DOWN);  map_ff_effect(FF_PERIODIC); goto ignore;
 307                                 case 0x40: map_ff_effect(FF_SPRING);    goto ignore;
 308                                 case 0x41: map_ff_effect(FF_DAMPER);    goto ignore;
 309                                 case 0x42: map_ff_effect(FF_INERTIA);   goto ignore;
 310                                 case 0x43: map_ff_effect(FF_FRICTION);  goto ignore;
 311                                 case 0x7e: map_ff(FF_GAIN);             break;
 312                                 case 0x83: input->ff_effects_max = field->value[0]; goto ignore;
 313                                 case 0x98: map_ff(FF_AUTOCENTER);       break;
 314                                 case 0xa4: map_key_clear(BTN_DEAD);     break;
 315                                 default: goto ignore;
 316                         }
 317                         break;
 318
 319                 default:
 320                 unknown:
 321                         if (field->report_size == 1) {
 322                                 if (field->report->type == HID_OUTPUT_REPORT) {
 323                                         map_led(LED_MISC);
 324                                         break;
 325                                 }
 326                                 map_key(BTN_MISC);
 327                                 break;
 328                         }
 329                         if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 330                                 map_rel(REL_MISC);
 331                                 break;
 332                         }
 333                         map_abs(ABS_MISC);
 334                         break;
 335         }
 336
 337         set_bit(usage->type, input->evbit);
 338
 339         while (usage->code <= max && test_and_set_bit(usage->code, bit))
 340                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 341
 342         if (usage->code > max)
 343                 goto ignore;
 344
 345         if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5)) &&
 346                  (usage->type == EV_REL) && (usage->code == REL_WHEEL))
 347                         set_bit(REL_HWHEEL, bit);
 348
 349         if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
 350                 || ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
 351                 goto ignore;
 352
 353         if (usage->type == EV_ABS) {
 354
 355                 int a = field->logical_minimum;
 356                 int b = field->logical_maximum;
 357
 358                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 359                         a = field->logical_minimum = 0;
 360                         b = field->logical_maximum = 255;
 361                 }
 362
 363                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
 364                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 365                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
 366
 367         }
 368
 369         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
 370                 int i;
 371                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 372                         input_set_abs_params(input, i, -1, 1, 0, 0);
 373                         set_bit(i, input->absbit);
 374                 }
 375                 if (usage->hat_dir && !field->dpad)
 376                         field->dpad = usage->code;
 377         }
 378
 379 #ifdef DEBUG
 380         resolv_event(usage->type, usage->code);
 381         printk("\n");
 382 #endif
 383         return;
 384
 385 ignore:
 386 #ifdef DEBUG
 387         printk("IGNORED\n");
 388 #endif
 389         return;
 390 }
 391
 392 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
 393 {
 394         struct input_dev *input = &field->hidinput->input;
 395         int *quirks = &hid->quirks;
 396
 397         if (!input)
 398                 return;
 399
 400         if (!usage->type)
 401                 return;
 402
 403         input_regs(input, regs);
 404
 405         if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
 406                 || ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
 407                 if (value) hid->quirks |=  HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
 408                 else       hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
 409                 return;
 410         }
 411
 412         if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON) && (usage->code == REL_WHEEL)) {
 413                 input_event(input, usage->type, REL_HWHEEL, value);
 414                 return;
 415         }
 416
 417         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
 418                 int hat_dir = usage->hat_dir;
 419                 if (!hat_dir)
 420                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 421                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
 422                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
 423                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
 424                 return;
 425         }
 426
 427         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 428                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
 429                 return;
 430         }
 431
 432         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
 433                 if (value) {
 434                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
 435                         return;
 436                 }
 437                 input_event(input, usage->type, usage->code, 0);
 438                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
 439                 return;
 440         }
 441
 442         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
 443                 int a = field->logical_minimum;
 444                 int b = field->logical_maximum;
 445                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
 446         }
 447
 448         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
 449                 input->ff_effects_max = value;
 450                 dbg("Maximum Effects - %d",input->ff_effects_max);
 451                 return;
 452         }
 453
 454         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
 455                 dbg("PID Pool Report\n");
 456                 return;
 457         }
 458
 459         if((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
 460                 return;
 461
 462         input_event(input, usage->type, usage->code, value);
 463
 464         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
 465                 input_event(input, usage->type, usage->code, 0);
 466 }
 467
 468 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
 469 {
 470         struct list_head *lh;
 471         struct hid_input *hidinput;
 472
 473         list_for_each (lh, &hid->inputs) {
 474                 hidinput = list_entry(lh, struct hid_input, list);
 475                 input_sync(&hidinput->input);
 476         }
 477 }
 478
 479 static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 480 {
 481         struct hid_device *hid = dev->private;
 482         struct hid_field *field = NULL;
 483         int offset;
 484
 485         if (type == EV_FF)
 486                 return hid_ff_event(hid, dev, type, code, value);
 487
 488         if ((offset = hid_find_field(hid, type, code, &field)) == -1) {
 489                 warn("event field not found");
 490                 return -1;
 491         }
 492
 493         hid_set_field(field, offset, value);
 494         hid_submit_report(hid, field->report, USB_DIR_OUT);
 495
 496         return 0;
 497 }
 498
 499 static int hidinput_open(struct input_dev *dev)
 500 {
 501         struct hid_device *hid = dev->private;
 502         return hid_open(hid);
 503 }
 504
 505 static void hidinput_close(struct input_dev *dev)
 506 {
 507         struct hid_device *hid = dev->private;
 508         hid_close(hid);
 509 }
 510
 511 /*
 512  * Register the input device; print a message.
 513  * Configure the input layer interface
 514  * Read all reports and initialize the absolute field values.
 515  */
 516
 517 int hidinput_connect(struct hid_device *hid)
 518 {
 519         struct usb_device *dev = hid->dev;
 520         struct hid_report_enum *report_enum;
 521         struct hid_report *report;
 522         struct list_head *list;
 523         struct hid_input *hidinput = NULL;
 524         int i, j, k;
 525
 526         INIT_LIST_HEAD(&hid->inputs);
 527
 528         for (i = 0; i < hid->maxcollection; i++)
 529                 if (hid->collection[i].type == HID_COLLECTION_APPLICATION ||
 530                     hid->collection[i].type == HID_COLLECTION_PHYSICAL)
 531                         if (IS_INPUT_APPLICATION(hid->collection[i].usage))
 532                                 break;
 533
 534         if (i == hid->maxcollection)
 535                 return -1;
 536
 537         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
 538                 report_enum = hid->report_enum + k;
 539                 list = report_enum->report_list.next;
 540                 while (list != &report_enum->report_list) {
 541                         report = (struct hid_report *) list;
 542
 543                         if (!report->maxfield) {
 544                                 list = list->next;
 545                                 continue;
 546                         }
 547
 548                         if (!hidinput) {
 549                                 hidinput = kmalloc(sizeof(*hidinput), GFP_KERNEL);
 550                                 if (!hidinput) {
 551                                         err("Out of memory during hid input probe");
 552                                         return -1;
 553                                 }
 554                                 memset(hidinput, 0, sizeof(*hidinput));
 555
 556                                 list_add_tail(&hidinput->list, &hid->inputs);
 557
 558                                 hidinput->input.private = hid;
 559                                 hidinput->input.event = hidinput_input_event;
 560                                 hidinput->input.open = hidinput_open;
 561                                 hidinput->input.close = hidinput_close;
 562
 563                                 hidinput->input.name = hid->name;
 564                                 hidinput->input.phys = hid->phys;
 565                                 hidinput->input.uniq = hid->uniq;
 566                                 hidinput->input.id.bustype = BUS_USB;
 567                                 hidinput->input.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
 568                                 hidinput->input.id.product = le16_to_cpu(dev->descriptor.idProduct);
 569                                 hidinput->input.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
 570                                 hidinput->input.dev = &hid->intf->dev;
 571                         }
 572
 573                         for (i = 0; i < report->maxfield; i++)
 574                                 for (j = 0; j < report->field[i]->maxusage; j++)
 575                                         hidinput_configure_usage(hidinput, report->field[i],
 576                                                                  report->field[i]->usage + j);
 577
 578                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
 579                                 /* This will leave hidinput NULL, so that it
 580                                  * allocates another one if we have more inputs on
 581                                  * the same interface. Some devices (e.g. Happ's
 582                                  * UGCI) cram a lot of unrelated inputs into the
 583                                  * same interface. */
 584                                 hidinput->report = report;
 585                                 input_register_device(&hidinput->input);
 586                                 hidinput = NULL;
 587                         }
 588
 589                         list = list->next;
 590                 }
 591         }
 592
 593         /* This only gets called when we are a single-input (most of the
 594          * time). IOW, not a HID_QUIRK_MULTI_INPUT. The hid_ff_init() is
 595          * only useful in this case, and not for multi-input quirks. */
 596         if (hidinput) {
 597                 hid_ff_init(hid);
 598                 input_register_device(&hidinput->input);
 599         }
 600
 601         return 0;
 602 }
 603
 604 void hidinput_disconnect(struct hid_device *hid)
 605 {
 606         struct list_head *lh, *next;
 607         struct hid_input *hidinput;
 608
 609         list_for_each_safe (lh, next, &hid->inputs) {
 610                 hidinput = list_entry(lh, struct hid_input, list);
 611                 input_unregister_device(&hidinput->input);
 612                 list_del(&hidinput->list);
 613                 kfree(hidinput);
 614         }
 615 }