| 1 | #include <stdio.h> |
| 2 | #include <string.h> |
| 3 | #include <sys/types.h> |
| 4 | #include <sys/stat.h> |
| 5 | #include <fcntl.h> |
| 6 | #include <sys/ioctl.h> |
| 7 | #include <unistd.h> |
| 8 | #include <linux/input.h> |
| 9 | #include <errno.h> |
| 10 | |
| 11 | #include "../common/common.h" |
| 12 | #include "../common/input.h" |
| 13 | #include "in_evdev.h" |
| 14 | |
| 15 | #define KEYBITS_BIT(x) (keybits[(x)/sizeof(keybits[0])/8] & \ |
| 16 | (1 << ((x) & (sizeof(keybits[0])*8-1)))) |
| 17 | |
| 18 | static const char * const in_evdev_prefix = "evdev:"; |
| 19 | static const char * const in_evdev_keys[KEY_MAX + 1] = { |
| 20 | [0 ... KEY_MAX] = NULL, |
| 21 | [KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc", |
| 22 | [KEY_1] = "1", [KEY_2] = "2", |
| 23 | [KEY_3] = "3", [KEY_4] = "4", |
| 24 | [KEY_5] = "5", [KEY_6] = "6", |
| 25 | [KEY_7] = "7", [KEY_8] = "8", |
| 26 | [KEY_9] = "9", [KEY_0] = "0", |
| 27 | [KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal", |
| 28 | [KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab", |
| 29 | [KEY_Q] = "Q", [KEY_W] = "W", |
| 30 | [KEY_E] = "E", [KEY_R] = "R", |
| 31 | [KEY_T] = "T", [KEY_Y] = "Y", |
| 32 | [KEY_U] = "U", [KEY_I] = "I", |
| 33 | [KEY_O] = "O", [KEY_P] = "P", |
| 34 | [KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace", |
| 35 | [KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl", |
| 36 | [KEY_A] = "A", [KEY_S] = "S", |
| 37 | [KEY_D] = "D", [KEY_F] = "F", |
| 38 | [KEY_G] = "G", [KEY_H] = "H", |
| 39 | [KEY_J] = "J", [KEY_K] = "K", |
| 40 | [KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon", |
| 41 | [KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave", |
| 42 | [KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash", |
| 43 | [KEY_Z] = "Z", [KEY_X] = "X", |
| 44 | [KEY_C] = "C", [KEY_V] = "V", |
| 45 | [KEY_B] = "B", [KEY_N] = "N", |
| 46 | [KEY_M] = "M", [KEY_COMMA] = "Comma", |
| 47 | [KEY_DOT] = "Dot", [KEY_SLASH] = "Slash", |
| 48 | [KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk", |
| 49 | [KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space", |
| 50 | [KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1", |
| 51 | [KEY_F2] = "F2", [KEY_F3] = "F3", |
| 52 | [KEY_F4] = "F4", [KEY_F5] = "F5", |
| 53 | [KEY_F6] = "F6", [KEY_F7] = "F7", |
| 54 | [KEY_F8] = "F8", [KEY_F9] = "F9", |
| 55 | [KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock", |
| 56 | [KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7", |
| 57 | [KEY_KP8] = "KP8", [KEY_KP9] = "KP9", |
| 58 | [KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4", |
| 59 | [KEY_KP5] = "KP5", [KEY_KP6] = "KP6", |
| 60 | [KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1", |
| 61 | [KEY_KP2] = "KP2", [KEY_KP3] = "KP3", |
| 62 | [KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot", |
| 63 | [KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd", |
| 64 | [KEY_F11] = "F11", [KEY_F12] = "F12", |
| 65 | [KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter", |
| 66 | [KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash", |
| 67 | [KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt", |
| 68 | [KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home", |
| 69 | [KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp", |
| 70 | [KEY_LEFT] = "Left", [KEY_RIGHT] = "Right", |
| 71 | [KEY_END] = "End", [KEY_DOWN] = "Down", |
| 72 | [KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert", |
| 73 | [KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro", |
| 74 | [KEY_HELP] = "Help", [KEY_MENU] = "Menu", |
| 75 | [KEY_COFFEE] = "Coffee", [KEY_DIRECTION] = "Direction", |
| 76 | [BTN_0] = "Btn0", [BTN_1] = "Btn1", |
| 77 | [BTN_2] = "Btn2", [BTN_3] = "Btn3", |
| 78 | [BTN_4] = "Btn4", [BTN_5] = "Btn5", |
| 79 | [BTN_6] = "Btn6", [BTN_7] = "Btn7", |
| 80 | [BTN_8] = "Btn8", [BTN_9] = "Btn9", |
| 81 | [BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn", |
| 82 | [BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn", |
| 83 | [BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn", |
| 84 | [BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn", |
| 85 | [BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn", |
| 86 | [BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn", |
| 87 | [BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn", |
| 88 | [BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2", |
| 89 | [BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4", |
| 90 | [BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6", |
| 91 | [BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA", |
| 92 | [BTN_B] = "BtnB", [BTN_C] = "BtnC", |
| 93 | [BTN_X] = "BtnX", [BTN_Y] = "BtnY", |
| 94 | [BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL", |
| 95 | [BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2", |
| 96 | [BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect", |
| 97 | [BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode", |
| 98 | [BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR", |
| 99 | [BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus", |
| 100 | [BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "Tool Doubletap", |
| 101 | [BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn", |
| 102 | [BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok", |
| 103 | }; |
| 104 | |
| 105 | |
| 106 | static void in_evdev_probe(void) |
| 107 | { |
| 108 | int i; |
| 109 | |
| 110 | for (i = 0;; i++) |
| 111 | { |
| 112 | int u, ret, fd, keybits[(KEY_MAX+1)/sizeof(int)]; |
| 113 | int support = 0, count = 0; |
| 114 | char name[64]; |
| 115 | |
| 116 | snprintf(name, sizeof(name), "/dev/input/event%d", i); |
| 117 | fd = open(name, O_RDONLY|O_NONBLOCK); |
| 118 | if (fd == -1) |
| 119 | break; |
| 120 | |
| 121 | /* check supported events */ |
| 122 | ret = ioctl(fd, EVIOCGBIT(0, sizeof(support)), &support); |
| 123 | if (ret == -1) { |
| 124 | printf("in_evdev: ioctl failed on %s\n", name); |
| 125 | goto skip; |
| 126 | } |
| 127 | |
| 128 | if (!(support & (1 << EV_KEY))) |
| 129 | goto skip; |
| 130 | |
| 131 | ret = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits); |
| 132 | if (ret == -1) { |
| 133 | printf("in_evdev: ioctl failed on %s\n", name); |
| 134 | goto skip; |
| 135 | } |
| 136 | |
| 137 | /* check for interesting keys */ |
| 138 | for (u = 0; u < KEY_MAX + 1; u++) { |
| 139 | if (KEYBITS_BIT(u) && u != KEY_POWER && u != KEY_SLEEP) |
| 140 | count++; |
| 141 | } |
| 142 | |
| 143 | if (count == 0) |
| 144 | goto skip; |
| 145 | |
| 146 | strcpy(name, in_evdev_prefix); |
| 147 | ioctl(fd, EVIOCGNAME(sizeof(name)-6), name+6); |
| 148 | printf("in_evdev: found \"%s\" with %d events (type %08x)\n", |
| 149 | name+6, count, support); |
| 150 | in_register(name, IN_DRVID_EVDEV, (void *)fd); |
| 151 | continue; |
| 152 | |
| 153 | skip: |
| 154 | close(fd); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | static void in_evdev_free(void *drv_data) |
| 159 | { |
| 160 | close((int)drv_data); |
| 161 | } |
| 162 | |
| 163 | static int in_evdev_get_bind_count(void) |
| 164 | { |
| 165 | return KEY_MAX + 1; |
| 166 | } |
| 167 | |
| 168 | /* returns bitfield of active binds or -1 if nothing |
| 169 | * changed from previous time */ |
| 170 | int in_evdev_update(void *drv_data, int *binds) |
| 171 | { |
| 172 | struct input_event ev[16]; |
| 173 | int keybits[(KEY_MAX+1)/sizeof(int)]; |
| 174 | int fd = (int)drv_data; |
| 175 | int result = 0, changed = 0; |
| 176 | int rd, ret, u; |
| 177 | |
| 178 | while (1) { |
| 179 | rd = read(fd, ev, sizeof(ev)); |
| 180 | if (rd < (int)sizeof(ev[0])) { |
| 181 | if (errno != EAGAIN) |
| 182 | perror("in_evdev: read failed"); |
| 183 | break; |
| 184 | } |
| 185 | |
| 186 | changed = 1; |
| 187 | } |
| 188 | |
| 189 | if (!changed) |
| 190 | return -1; |
| 191 | |
| 192 | ret = ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits); |
| 193 | if (ret == -1) { |
| 194 | perror("in_evdev: ioctl failed"); |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | for (u = 0; u < KEY_MAX + 1; u++) { |
| 199 | if (KEYBITS_BIT(u)) { |
| 200 | result |= binds[u]; |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | return result; |
| 205 | } |
| 206 | |
| 207 | static void in_evdev_set_blocking(void *data, int y) |
| 208 | { |
| 209 | long flags; |
| 210 | int ret; |
| 211 | |
| 212 | flags = (long)fcntl((int)data, F_GETFL); |
| 213 | if ((int)flags == -1) { |
| 214 | perror("in_evdev: F_GETFL fcntl failed"); |
| 215 | return; |
| 216 | } |
| 217 | if (y) |
| 218 | flags &= ~O_NONBLOCK; |
| 219 | else |
| 220 | flags |= O_NONBLOCK; |
| 221 | ret = fcntl((int)data, F_SETFL, flags); |
| 222 | if (ret == -1) |
| 223 | perror("in_evdev: F_SETFL fcntl failed"); |
| 224 | } |
| 225 | |
| 226 | int in_evdev_update_keycode(void **data, int dcount, int *which, int *is_down, int timeout_ms) |
| 227 | { |
| 228 | const int *fds = (const int *)data; |
| 229 | struct timeval tv, *timeout = NULL; |
| 230 | int i, fdmax = -1; |
| 231 | |
| 232 | if (timeout_ms > 0) { |
| 233 | tv.tv_sec = timeout_ms / 1000; |
| 234 | tv.tv_usec = (timeout_ms % 1000) * 1000; |
| 235 | timeout = &tv; |
| 236 | } |
| 237 | |
| 238 | if (is_down != NULL) |
| 239 | *is_down = 0; |
| 240 | |
| 241 | for (i = 0; i < dcount; i++) |
| 242 | if (fds[i] > fdmax) fdmax = fds[i]; |
| 243 | |
| 244 | while (1) |
| 245 | { |
| 246 | struct input_event ev[64]; |
| 247 | int ret, fd = -1, rd; |
| 248 | fd_set fdset; |
| 249 | |
| 250 | FD_ZERO(&fdset); |
| 251 | for (i = 0; i < dcount; i++) |
| 252 | FD_SET(fds[i], &fdset); |
| 253 | |
| 254 | ret = select(fdmax + 1, &fdset, NULL, NULL, timeout); |
| 255 | if (ret == -1) |
| 256 | { |
| 257 | perror("in_evdev: select failed"); |
| 258 | sleep(1); |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | if (ret == 0) |
| 263 | return 0; /* timeout */ |
| 264 | |
| 265 | for (i = 0; i < dcount; i++) |
| 266 | if (FD_ISSET(fds[i], &fdset)) |
| 267 | *which = i, fd = fds[i]; |
| 268 | |
| 269 | rd = read(fd, ev, sizeof(ev[0]) * 64); |
| 270 | if (rd < (int) sizeof(ev[0])) { |
| 271 | perror("in_evdev: error reading"); |
| 272 | sleep(1); |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | for (i = 0; i < rd / sizeof(ev[0]); i++) |
| 277 | { |
| 278 | if (ev[i].type != EV_KEY || ev[i].value < 0 || ev[i].value > 1) |
| 279 | continue; |
| 280 | |
| 281 | if (is_down != NULL) |
| 282 | *is_down = ev[i].value; |
| 283 | return ev[i].code; |
| 284 | } |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | static int in_evdev_menu_translate(int keycode) |
| 289 | { |
| 290 | switch (keycode) { |
| 291 | /* keyboards */ |
| 292 | case KEY_UP: return PBTN_UP; |
| 293 | case KEY_DOWN: return PBTN_DOWN; |
| 294 | case KEY_LEFT: return PBTN_LEFT; |
| 295 | case KEY_RIGHT: return PBTN_RIGHT; |
| 296 | case KEY_ENTER: return PBTN_EAST; |
| 297 | case KEY_ESC: return PBTN_SOUTH; |
| 298 | default: return 0; |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | static int in_evdev_get_key_code(const char *key_name) |
| 303 | { |
| 304 | int i; |
| 305 | |
| 306 | for (i = 0; i < KEY_MAX + 1; i++) { |
| 307 | const char *k = in_evdev_keys[i]; |
| 308 | if (k != NULL && k[0] == key_name[0] && |
| 309 | strcasecmp(k, key_name) == 0) |
| 310 | return i; |
| 311 | } |
| 312 | |
| 313 | return -1; |
| 314 | } |
| 315 | |
| 316 | static const char *in_evdev_get_key_name(int keycode) |
| 317 | { |
| 318 | const char *name = NULL; |
| 319 | if (keycode >= 0 && keycode <= KEY_MAX) |
| 320 | name = in_evdev_keys[keycode]; |
| 321 | if (name == NULL) |
| 322 | name = "Unkn"; |
| 323 | |
| 324 | return name; |
| 325 | } |
| 326 | |
| 327 | static const struct { |
| 328 | short code; |
| 329 | short bit; |
| 330 | } in_evdev_def_binds[] = |
| 331 | { |
| 332 | /* MXYZ SACB RLDU */ |
| 333 | { KEY_UP, 0 }, |
| 334 | { KEY_DOWN, 1 }, |
| 335 | { KEY_LEFT, 2 }, |
| 336 | { KEY_RIGHT, 3 }, |
| 337 | { KEY_S, 4 }, /* B */ |
| 338 | { KEY_D, 5 }, /* C */ |
| 339 | { KEY_A, 6 }, /* A */ |
| 340 | { KEY_ENTER, 7 }, |
| 341 | }; |
| 342 | |
| 343 | #define DEF_BIND_COUNT (sizeof(in_evdev_def_binds) / sizeof(in_evdev_def_binds[0])) |
| 344 | |
| 345 | static void in_evdev_get_def_binds(int *binds) |
| 346 | { |
| 347 | int i; |
| 348 | |
| 349 | for (i = 0; i < DEF_BIND_COUNT; i++) |
| 350 | binds[in_evdev_def_binds[i].code] = 1 << in_evdev_def_binds[i].bit; |
| 351 | } |
| 352 | |
| 353 | /* remove bad binds, count good ones */ |
| 354 | static int in_evdev_clean_binds(void *drv_data, int *binds) |
| 355 | { |
| 356 | int keybits[(KEY_MAX+1)/sizeof(int)]; |
| 357 | int i, ret, count = 0; |
| 358 | |
| 359 | ret = ioctl((int)drv_data, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits); |
| 360 | if (ret == -1) { |
| 361 | perror("in_evdev: ioctl failed"); |
| 362 | memset(keybits, 0xff, sizeof(keybits)); /* mark all as good */ |
| 363 | } |
| 364 | |
| 365 | for (i = 0; i < KEY_MAX + 1; i++) { |
| 366 | if (!KEYBITS_BIT(i)) |
| 367 | binds[i] = binds[i + KEY_MAX + 1] = 0; |
| 368 | if (binds[i]) |
| 369 | count++; |
| 370 | } |
| 371 | |
| 372 | return count; |
| 373 | } |
| 374 | |
| 375 | void in_evdev_init(void *vdrv) |
| 376 | { |
| 377 | in_drv_t *drv = vdrv; |
| 378 | |
| 379 | drv->prefix = in_evdev_prefix; |
| 380 | drv->probe = in_evdev_probe; |
| 381 | drv->free = in_evdev_free; |
| 382 | drv->get_bind_count = in_evdev_get_bind_count; |
| 383 | drv->get_def_binds = in_evdev_get_def_binds; |
| 384 | drv->clean_binds = in_evdev_clean_binds; |
| 385 | drv->set_blocking = in_evdev_set_blocking; |
| 386 | drv->menu_translate = in_evdev_menu_translate; |
| 387 | drv->get_key_code = in_evdev_get_key_code; |
| 388 | drv->get_key_name = in_evdev_get_key_name; |
| 389 | } |
| 390 | |