linux/in_evdev.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include <fcntl.h>
   7 #include <sys/ioctl.h>
   8 #include <unistd.h>
   9 #include <linux/input.h>
  10 #include <errno.h>
  11
  12 #include "../common/input.h"
  13 #include "in_evdev.h"
  14
  15 typedef struct {
  16         int fd;
  17         int *kbits;
  18         int abs_lzone;
  19         int abs_rzone;
  20         int abs_tzone;
  21         int abs_bzone;
  22         int abs_lastx;
  23         int abs_lasty;
  24 } in_evdev_t;
  25
  26 #ifndef KEY_CNT
  27 #define KEY_CNT (KEY_MAX + 1)
  28 #endif
  29
  30 #define KEYBITS_BIT(x) (keybits[(x)/sizeof(keybits[0])/8] & \
  31         (1 << ((x) & (sizeof(keybits[0])*8-1))))
  32
  33 #define KEYBITS_BIT_SET(x) (keybits[(x)/sizeof(keybits[0])/8] |= \
  34         (1 << ((x) & (sizeof(keybits[0])*8-1))))
  35
  36 #define KEYBITS_BIT_CLEAR(x) (keybits[(x)/sizeof(keybits[0])/8] &= \
  37         ~(1 << ((x) & (sizeof(keybits[0])*8-1))))
  38
  39 static const char * const in_evdev_prefix = "evdev:";
  40 static const char * const in_evdev_keys[KEY_CNT] = {
  41         [0 ... KEY_MAX] = NULL,
  42         [KEY_RESERVED] = "Reserved",            [KEY_ESC] = "Esc",
  43         [KEY_1] = "1",                          [KEY_2] = "2",
  44         [KEY_3] = "3",                          [KEY_4] = "4",
  45         [KEY_5] = "5",                          [KEY_6] = "6",
  46         [KEY_7] = "7",                          [KEY_8] = "8",
  47         [KEY_9] = "9",                          [KEY_0] = "0",
  48         [KEY_MINUS] = "Minus",                  [KEY_EQUAL] = "Equal",
  49         [KEY_BACKSPACE] = "Backspace",          [KEY_TAB] = "Tab",
  50         [KEY_Q] = "Q",                          [KEY_W] = "W",
  51         [KEY_E] = "E",                          [KEY_R] = "R",
  52         [KEY_T] = "T",                          [KEY_Y] = "Y",
  53         [KEY_U] = "U",                          [KEY_I] = "I",
  54         [KEY_O] = "O",                          [KEY_P] = "P",
  55         [KEY_LEFTBRACE] = "LeftBrace",          [KEY_RIGHTBRACE] = "RightBrace",
  56         [KEY_ENTER] = "Enter",                  [KEY_LEFTCTRL] = "LeftControl",
  57         [KEY_A] = "A",                          [KEY_S] = "S",
  58         [KEY_D] = "D",                          [KEY_F] = "F",
  59         [KEY_G] = "G",                          [KEY_H] = "H",
  60         [KEY_J] = "J",                          [KEY_K] = "K",
  61         [KEY_L] = "L",                          [KEY_SEMICOLON] = "Semicolon",
  62         [KEY_APOSTROPHE] = "Apostrophe",        [KEY_GRAVE] = "Grave",
  63         [KEY_LEFTSHIFT] = "LeftShift",          [KEY_BACKSLASH] = "BackSlash",
  64         [KEY_Z] = "Z",                          [KEY_X] = "X",
  65         [KEY_C] = "C",                          [KEY_V] = "V",
  66         [KEY_B] = "B",                          [KEY_N] = "N",
  67         [KEY_M] = "M",                          [KEY_COMMA] = "Comma",
  68         [KEY_DOT] = "Dot",                      [KEY_SLASH] = "Slash",
  69         [KEY_RIGHTSHIFT] = "RightShift",        [KEY_KPASTERISK] = "KPAsterisk",
  70         [KEY_LEFTALT] = "LeftAlt",              [KEY_SPACE] = "Space",
  71         [KEY_CAPSLOCK] = "CapsLock",            [KEY_F1] = "F1",
  72         [KEY_F2] = "F2",                        [KEY_F3] = "F3",
  73         [KEY_F4] = "F4",                        [KEY_F5] = "F5",
  74         [KEY_F6] = "F6",                        [KEY_F7] = "F7",
  75         [KEY_F8] = "F8",                        [KEY_F9] = "F9",
  76         [KEY_F10] = "F10",                      [KEY_NUMLOCK] = "NumLock",
  77         [KEY_SCROLLLOCK] = "ScrollLock",        [KEY_KP7] = "KP7",
  78         [KEY_KP8] = "KP8",                      [KEY_KP9] = "KP9",
  79         [KEY_KPMINUS] = "KPMinus",              [KEY_KP4] = "KP4",
  80         [KEY_KP5] = "KP5",                      [KEY_KP6] = "KP6",
  81         [KEY_KPPLUS] = "KPPlus",                [KEY_KP1] = "KP1",
  82         [KEY_KP2] = "KP2",                      [KEY_KP3] = "KP3",
  83         [KEY_KP0] = "KP0",                      [KEY_KPDOT] = "KPDot",
  84         [KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
  85         [KEY_F11] = "F11",                      [KEY_F12] = "F12",
  86         [KEY_KPJPCOMMA] = "KPJpComma",          [KEY_KPENTER] = "KPEnter",
  87         [KEY_RIGHTCTRL] = "RightCtrl",          [KEY_KPSLASH] = "KPSlash",
  88         [KEY_SYSRQ] = "SysRq",                  [KEY_RIGHTALT] = "RightAlt",
  89         [KEY_LINEFEED] = "LineFeed",            [KEY_HOME] = "Home",
  90         [KEY_UP] = "Up",                        [KEY_PAGEUP] = "PageUp",
  91         [KEY_LEFT] = "Left",                    [KEY_RIGHT] = "Right",
  92         [KEY_END] = "End",                      [KEY_DOWN] = "Down",
  93         [KEY_PAGEDOWN] = "PageDown",            [KEY_INSERT] = "Insert",
  94         [KEY_DELETE] = "Delete",                [KEY_MACRO] = "Macro",
  95         [KEY_HELP] = "Help",                    [KEY_MENU] = "Menu",
  96         [KEY_COFFEE] = "Coffee",                [KEY_DIRECTION] = "Direction",
  97         [BTN_0] = "Btn0",                       [BTN_1] = "Btn1",
  98         [BTN_2] = "Btn2",                       [BTN_3] = "Btn3",
  99         [BTN_4] = "Btn4",                       [BTN_5] = "Btn5",
 100         [BTN_6] = "Btn6",                       [BTN_7] = "Btn7",
 101         [BTN_8] = "Btn8",                       [BTN_9] = "Btn9",
 102         [BTN_LEFT] = "LeftBtn",                 [BTN_RIGHT] = "RightBtn",
 103         [BTN_MIDDLE] = "MiddleBtn",             [BTN_SIDE] = "SideBtn",
 104         [BTN_EXTRA] = "ExtraBtn",               [BTN_FORWARD] = "ForwardBtn",
 105         [BTN_BACK] = "BackBtn",                 [BTN_TASK] = "TaskBtn",
 106         [BTN_TRIGGER] = "Trigger",              [BTN_THUMB] = "ThumbBtn",
 107         [BTN_THUMB2] = "ThumbBtn2",             [BTN_TOP] = "TopBtn",
 108         [BTN_TOP2] = "TopBtn2",                 [BTN_PINKIE] = "PinkieBtn",
 109         [BTN_BASE] = "BaseBtn",                 [BTN_BASE2] = "BaseBtn2",
 110         [BTN_BASE3] = "BaseBtn3",               [BTN_BASE4] = "BaseBtn4",
 111         [BTN_BASE5] = "BaseBtn5",               [BTN_BASE6] = "BaseBtn6",
 112         [BTN_DEAD] = "BtnDead",                 [BTN_A] = "BtnA",
 113         [BTN_B] = "BtnB",                       [BTN_C] = "BtnC",
 114         [BTN_X] = "BtnX",                       [BTN_Y] = "BtnY",
 115         [BTN_Z] = "BtnZ",                       [BTN_TL] = "BtnTL",
 116         [BTN_TR] = "BtnTR",                     [BTN_TL2] = "BtnTL2",
 117         [BTN_TR2] = "BtnTR2",                   [BTN_SELECT] = "BtnSelect",
 118         [BTN_START] = "BtnStart",               [BTN_MODE] = "BtnMode",
 119         [BTN_THUMBL] = "BtnThumbL",             [BTN_THUMBR] = "BtnThumbR",
 120         [BTN_TOUCH] = "Touch",                  [BTN_STYLUS] = "Stylus",
 121         [BTN_STYLUS2] = "Stylus2",              [BTN_TOOL_DOUBLETAP] = "Tool Doubletap",
 122         [BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn",
 123         [BTN_GEAR_UP] = "Gear up",              [KEY_OK] = "Ok",
 124 };
 125
 126
 127 static void in_evdev_probe(void)
 128 {
 129         int i;
 130
 131         for (i = 0;; i++)
 132         {
 133                 int keybits[KEY_CNT / sizeof(int)], absbits[(ABS_MAX+1)/sizeof(int)];
 134                 int support = 0, count = 0;
 135                 in_evdev_t *dev;
 136                 int u, ret, fd;
 137                 char name[64];
 138
 139                 snprintf(name, sizeof(name), "/dev/input/event%d", i);
 140                 fd = open(name, O_RDONLY|O_NONBLOCK);
 141                 if (fd == -1) {
 142                         if (errno == EACCES)
 143                                 continue;       /* maybe we can access next one */
 144                         break;
 145                 }
 146
 147                 /* check supported events */
 148                 ret = ioctl(fd, EVIOCGBIT(0, sizeof(support)), &support);
 149                 if (ret == -1) {
 150                         printf("in_evdev: ioctl failed on %s\n", name);
 151                         goto skip;
 152                 }
 153
 154                 if (!(support & (1 << EV_KEY)))
 155                         goto skip;
 156
 157                 ret = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
 158                 if (ret == -1) {
 159                         printf("in_evdev: ioctl failed on %s\n", name);
 160                         goto skip;
 161                 }
 162
 163                 /* check for interesting keys */
 164                 for (u = 0; u < KEY_CNT; u++) {
 165                         if (KEYBITS_BIT(u) && u != KEY_POWER &&
 166                                         u != KEY_SLEEP && u != BTN_TOUCH)
 167                                 count++;
 168                 }
 169
 170                 if (count == 0)
 171                         goto skip;
 172
 173                 dev = calloc(1, sizeof(*dev));
 174                 if (dev == NULL)
 175                         goto skip;
 176
 177                 ret = ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits);
 178                 if (ret == -1) {
 179                         printf("Warning: EVIOCGKEY not supported, will have to track state\n");
 180                         dev->kbits = calloc(KEY_CNT, sizeof(int));
 181                         if (dev->kbits == NULL) {
 182                                 free(dev);
 183                                 goto skip;
 184                         }
 185                 }
 186
 187                 /* check for abs too */
 188                 if (support & (1 << EV_ABS)) {
 189                         struct input_absinfo ainfo;
 190                         int dist;
 191                         ret = ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits);
 192                         if (ret == -1)
 193                                 goto no_abs;
 194                         if (absbits[0] & (1 << ABS_X)) {
 195                                 ret = ioctl(fd, EVIOCGABS(ABS_X), &ainfo);
 196                                 if (ret == -1)
 197                                         goto no_abs;
 198                                 dist = ainfo.maximum - ainfo.minimum;
 199                                 dev->abs_lzone = ainfo.minimum + dist / 4;
 200                                 dev->abs_rzone = ainfo.maximum - dist / 4;
 201                         }
 202                         if (absbits[0] & (1 << ABS_Y)) {
 203                                 ret = ioctl(fd, EVIOCGABS(ABS_Y), &ainfo);
 204                                 if (ret == -1)
 205                                         goto no_abs;
 206                                 dist = ainfo.maximum - ainfo.minimum;
 207                                 dev->abs_tzone = ainfo.minimum + dist / 4;
 208                                 dev->abs_bzone = ainfo.maximum - dist / 4;
 209                         }
 210                 }
 211
 212 no_abs:
 213                 dev->fd = fd;
 214                 strcpy(name, in_evdev_prefix);
 215                 ioctl(fd, EVIOCGNAME(sizeof(name)-6), name+6);
 216                 printf("in_evdev: found \"%s\" with %d events (type %08x)\n",
 217                         name+6, count, support);
 218                 in_register(name, IN_DRVID_EVDEV, fd, dev, KEY_CNT, 0);
 219                 continue;
 220
 221 skip:
 222                 close(fd);
 223         }
 224 }
 225
 226 static void in_evdev_free(void *drv_data)
 227 {
 228         in_evdev_t *dev = drv_data;
 229         if (dev == NULL)
 230                 return;
 231         close(dev->fd);
 232         free(dev);
 233 }
 234
 235 static int in_evdev_get_bind_count(void)
 236 {
 237         return KEY_CNT;
 238 }
 239
 240 static void or_binds(const int *binds, int key, int *result)
 241 {
 242         int t;
 243         for (t = 0; t < IN_BINDTYPE_COUNT; t++)
 244                 result[t] |= binds[IN_BIND_OFFS(key, t)];
 245 }
 246
 247 /* ORs result with binds of pressed buttons
 248  * XXX: should measure performance hit of this func, might need to optimize */
 249 int in_evdev_update(void *drv_data, const int *binds, int *result)
 250 {
 251         struct input_event ev[16];
 252         struct input_absinfo ainfo;
 253         int keybits_[KEY_CNT / sizeof(int)];
 254         int *keybits = keybits_;
 255         in_evdev_t *dev = drv_data;
 256         int rd, ret, u;
 257
 258         if (dev->kbits == NULL) {
 259                 ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits_)), keybits_);
 260                 if (ret == -1) {
 261                         perror("in_evdev: ioctl failed");
 262                         return -1;
 263                 }
 264         }
 265         else {
 266                 keybits = dev->kbits;
 267                 while (1) {
 268                         rd = read(dev->fd, ev, sizeof(ev));
 269                         if (rd < (int)sizeof(ev[0])) {
 270                                 if (errno != EAGAIN)
 271                                         perror("in_evdev: read failed");
 272                                 break;
 273                         }
 274                         for (u = 0; u < rd / sizeof(ev[0]); u++) {
 275                                 if (ev[u].type != EV_KEY)
 276                                         continue;
 277                                 else if (ev[u].value == 1)
 278                                         KEYBITS_BIT_SET(ev[u].code);
 279                                 else if (ev[u].value == 0)
 280                                         KEYBITS_BIT_CLEAR(ev[u].code);
 281                         }
 282                 }
 283         }
 284
 285         for (u = 0; u < KEY_CNT; u++) {
 286                 if (KEYBITS_BIT(u))
 287                         or_binds(binds, u, result);
 288         }
 289
 290         /* map X and Y absolute to UDLR */
 291         if (dev->abs_lzone != 0) {
 292                 ret = ioctl(dev->fd, EVIOCGABS(ABS_X), &ainfo);
 293                 if (ret != -1) {
 294                         if (ainfo.value < dev->abs_lzone) or_binds(binds, KEY_LEFT, result);
 295                         if (ainfo.value > dev->abs_rzone) or_binds(binds, KEY_RIGHT, result);
 296                 }
 297         }
 298         if (dev->abs_tzone != 0) {
 299                 ret = ioctl(dev->fd, EVIOCGABS(ABS_Y), &ainfo);
 300                 if (ret != -1) {
 301                         if (ainfo.value < dev->abs_tzone) or_binds(binds, KEY_UP, result);
 302                         if (ainfo.value > dev->abs_bzone) or_binds(binds, KEY_DOWN, result);
 303                 }
 304         }
 305
 306         return 0;
 307 }
 308
 309 static void in_evdev_set_blocking(void *drv_data, int y)
 310 {
 311         in_evdev_t *dev = drv_data;
 312         long flags;
 313         int ret;
 314
 315         flags = (long)fcntl(dev->fd, F_GETFL);
 316         if ((int)flags == -1) {
 317                 perror("in_evdev: F_GETFL fcntl failed");
 318                 return;
 319         }
 320         if (y)
 321                 flags &= ~O_NONBLOCK;
 322         else
 323                 flags |=  O_NONBLOCK;
 324         ret = fcntl(dev->fd, F_SETFL, flags);
 325         if (ret == -1)
 326                 perror("in_evdev: F_SETFL fcntl failed");
 327 }
 328
 329 static int in_evdev_update_keycode(void *data, int *is_down)
 330 {
 331         in_evdev_t *dev = data;
 332         struct input_event ev;
 333         int rd;
 334
 335         if (is_down != NULL)
 336                 *is_down = 0;
 337
 338         rd = read(dev->fd, &ev, sizeof(ev));
 339         if (rd < (int) sizeof(ev)) {
 340                 if (errno != EAGAIN) {
 341                         perror("in_evdev: error reading");
 342                         sleep(1);
 343                 }
 344                 return -1;
 345         }
 346
 347         if (ev.type == EV_KEY) {
 348                 if (ev.value < 0 || ev.value > 1)
 349                         return -1;
 350                 if (is_down != NULL)
 351                         *is_down = ev.value;
 352                 return ev.code;
 353         }
 354         else if (ev.type == EV_ABS)
 355         {
 356                 int down = 0;
 357                 if (dev->abs_lzone != 0 && ev.code == ABS_X) {
 358                         if (ev.value < dev->abs_lzone) {
 359                                 down = 1;
 360                                 dev->abs_lastx = KEY_LEFT;
 361                         }
 362                         else if (ev.value > dev->abs_rzone) {
 363                                 down = 1;
 364                                 dev->abs_lastx = KEY_RIGHT;
 365                         }
 366                         if (is_down != NULL)
 367                                 *is_down = down;
 368                         return dev->abs_lastx;
 369                 }
 370                 if (dev->abs_tzone != 0 && ev.code == ABS_Y) {
 371                         if (ev.value < dev->abs_tzone) {
 372                                 down = 1;
 373                                 dev->abs_lasty = KEY_UP;
 374                         }
 375                         else if (ev.value > dev->abs_bzone) {
 376                                 down = 1;
 377                                 dev->abs_lasty = KEY_DOWN;
 378                         }
 379                         if (is_down != NULL)
 380                                 *is_down = down;
 381                         return dev->abs_lasty;
 382                 }
 383         }
 384
 385         return -1;
 386 }
 387
 388 static const struct {
 389         short key;
 390         short pbtn;
 391 } key_pbtn_map[] =
 392 {
 393         { KEY_UP,       PBTN_UP },
 394         { KEY_DOWN,     PBTN_DOWN },
 395         { KEY_LEFT,     PBTN_LEFT },
 396         { KEY_RIGHT,    PBTN_RIGHT },
 397         { KEY_ENTER,    PBTN_MOK },
 398         { BTN_A,        PBTN_MOK },
 399         { BTN_TRIGGER,  PBTN_MOK },
 400         { KEY_ESC,      PBTN_MBACK },
 401         { BTN_B,        PBTN_MBACK },
 402         { BTN_THUMB,    PBTN_MBACK },
 403         { KEY_A,        PBTN_MA2 },
 404         { KEY_S,        PBTN_MA3 },
 405         { KEY_BACKSLASH,  PBTN_MENU },
 406         { KEY_MENU,       PBTN_MENU },
 407         { KEY_LEFTBRACE,  PBTN_L },
 408         { KEY_RIGHTBRACE, PBTN_R },
 409 };
 410
 411 #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0]))
 412
 413 static int in_evdev_menu_translate(int keycode)
 414 {
 415         int i;
 416         if (keycode < 0)
 417         {
 418                 /* menu -> kc */
 419                 keycode = -keycode;
 420                 for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
 421                         if (key_pbtn_map[i].pbtn == keycode)
 422                                 return key_pbtn_map[i].key;
 423         }
 424         else
 425         {
 426                 for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
 427                         if (key_pbtn_map[i].key == keycode)
 428                                 return key_pbtn_map[i].pbtn;
 429         }
 430
 431         return 0;
 432 }
 433
 434 static int in_evdev_get_key_code(const char *key_name)
 435 {
 436         int i;
 437
 438         for (i = 0; i < KEY_CNT; i++) {
 439                 const char *k = in_evdev_keys[i];
 440                 if (k != NULL && strcasecmp(k, key_name) == 0)
 441                         return i;
 442         }
 443
 444         return -1;
 445 }
 446
 447 static const char *in_evdev_get_key_name(int keycode)
 448 {
 449         const char *name = NULL;
 450         if (keycode >= 0 && keycode <= KEY_MAX)
 451                 name = in_evdev_keys[keycode];
 452         if (name == NULL)
 453                 name = "Unkn";
 454
 455         return name;
 456 }
 457
 458 static const struct {
 459         short code;
 460         char btype;
 461         char bit;
 462 } in_evdev_def_binds[] =
 463 {
 464         /* MXYZ SACB RLDU */
 465         { KEY_UP,       IN_BINDTYPE_PLAYER12, 0 },
 466         { KEY_DOWN,     IN_BINDTYPE_PLAYER12, 1 },
 467         { KEY_LEFT,     IN_BINDTYPE_PLAYER12, 2 },
 468         { KEY_RIGHT,    IN_BINDTYPE_PLAYER12, 3 },
 469         { KEY_S,        IN_BINDTYPE_PLAYER12, 4 },      /* B */
 470         { BTN_B,        IN_BINDTYPE_PLAYER12, 4 },
 471         { KEY_D,        IN_BINDTYPE_PLAYER12, 5 },      /* C */
 472         { BTN_A,        IN_BINDTYPE_PLAYER12, 5 },
 473         { KEY_A,        IN_BINDTYPE_PLAYER12, 6 },      /* A */
 474         { BTN_Y,        IN_BINDTYPE_PLAYER12, 6 },
 475         { KEY_ENTER,    IN_BINDTYPE_PLAYER12, 7 },
 476         { BTN_START,    IN_BINDTYPE_PLAYER12, 7 },
 477         { BTN_TL,       IN_BINDTYPE_EMU, PEVB_STATE_LOAD },
 478         { BTN_TR,       IN_BINDTYPE_EMU, PEVB_STATE_SAVE },
 479 };
 480
 481 #define DEF_BIND_COUNT (sizeof(in_evdev_def_binds) / sizeof(in_evdev_def_binds[0]))
 482
 483 static void in_evdev_get_def_binds(int *binds)
 484 {
 485         int i;
 486
 487         for (i = 0; i < DEF_BIND_COUNT; i++)
 488                 binds[IN_BIND_OFFS(in_evdev_def_binds[i].code, in_evdev_def_binds[i].btype)] =
 489                         1 << in_evdev_def_binds[i].bit;
 490 }
 491
 492 /* remove binds of missing keys, count remaining ones */
 493 static int in_evdev_clean_binds(void *drv_data, int *binds, int *def_binds)
 494 {
 495         int keybits[KEY_CNT / sizeof(int)];
 496         in_evdev_t *dev = drv_data;
 497         int i, t, ret, offs, count = 0;
 498
 499         ret = ioctl(dev->fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
 500         if (ret == -1) {
 501                 perror("in_evdev: ioctl failed");
 502                 memset(keybits, 0xff, sizeof(keybits)); /* mark all as good */
 503         }
 504
 505         if (dev->abs_lzone != 0) {
 506                 KEYBITS_BIT_SET(KEY_LEFT);
 507                 KEYBITS_BIT_SET(KEY_RIGHT);
 508         }
 509         if (dev->abs_tzone != 0) {
 510                 KEYBITS_BIT_SET(KEY_UP);
 511                 KEYBITS_BIT_SET(KEY_DOWN);
 512         }
 513
 514         for (i = 0; i < KEY_CNT; i++) {
 515                 for (t = 0; t < IN_BINDTYPE_COUNT; t++) {
 516                         offs = IN_BIND_OFFS(i, t);
 517                         if (!KEYBITS_BIT(i))
 518                                 binds[offs] = def_binds[offs] = 0;
 519                         if (binds[offs])
 520                                 count++;
 521                 }
 522         }
 523
 524         return count;
 525 }
 526
 527 void in_evdev_init(void *vdrv)
 528 {
 529         in_drv_t *drv = vdrv;
 530
 531         drv->prefix = in_evdev_prefix;
 532         drv->probe = in_evdev_probe;
 533         drv->free = in_evdev_free;
 534         drv->get_bind_count = in_evdev_get_bind_count;
 535         drv->get_def_binds = in_evdev_get_def_binds;
 536         drv->clean_binds = in_evdev_clean_binds;
 537         drv->set_blocking = in_evdev_set_blocking;
 538         drv->update_keycode = in_evdev_update_keycode;
 539         drv->menu_translate = in_evdev_menu_translate;
 540         drv->get_key_code = in_evdev_get_key_code;
 541         drv->get_key_name = in_evdev_get_key_name;
 542 }
 543