Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/evdev/evdev_utils.c
Version:
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1 /*- 2 * Copyright (c) 2014 Jakub Wojciech Klama <jceel@FreeBSD.org> 3 * Copyright (c) 2015-2016 Vladimir Kondratyev <wulf@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/bus.h> 32 #include <sys/conf.h> 33 #include <sys/kbio.h> 34 #include <sys/kernel.h> 35 #include <sys/lock.h> 36 #include <sys/malloc.h> 37 #include <sys/mutex.h> 38 #include <sys/systm.h> 39 40 #include <dev/evdev/evdev.h> 41 #include <dev/evdev/evdev_private.h> 42 #include <dev/evdev/input.h> 43 44 #define NONE KEY_RESERVED 45 46 static uint16_t evdev_usb_scancodes[256] = { 47 /* 0x00 - 0x27 */ 48 NONE, NONE, NONE, NONE, KEY_A, KEY_B, KEY_C, KEY_D, 49 KEY_E, KEY_F, KEY_G, KEY_H, KEY_I, KEY_J, KEY_K, KEY_L, 50 KEY_M, KEY_N, KEY_O, KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T, 51 KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y, KEY_Z, KEY_1, KEY_2, 52 KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_0, 53 /* 0x28 - 0x3f */ 54 KEY_ENTER, KEY_ESC, KEY_BACKSPACE, KEY_TAB, 55 KEY_SPACE, KEY_MINUS, KEY_EQUAL, KEY_LEFTBRACE, 56 KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_BACKSLASH, KEY_SEMICOLON, 57 KEY_APOSTROPHE, KEY_GRAVE, KEY_COMMA, KEY_DOT, 58 KEY_SLASH, KEY_CAPSLOCK, KEY_F1, KEY_F2, 59 KEY_F3, KEY_F4, KEY_F5, KEY_F6, 60 /* 0x40 - 0x5f */ 61 KEY_F7, KEY_F8, KEY_F9, KEY_F10, 62 KEY_F11, KEY_F12, KEY_SYSRQ, KEY_SCROLLLOCK, 63 KEY_PAUSE, KEY_INSERT, KEY_HOME, KEY_PAGEUP, 64 KEY_DELETE, KEY_END, KEY_PAGEDOWN, KEY_RIGHT, 65 KEY_LEFT, KEY_DOWN, KEY_UP, KEY_NUMLOCK, 66 KEY_KPSLASH, KEY_KPASTERISK, KEY_KPMINUS, KEY_KPPLUS, 67 KEY_KPENTER, KEY_KP1, KEY_KP2, KEY_KP3, 68 KEY_KP4, KEY_KP5, KEY_KP6, KEY_KP7, 69 /* 0x60 - 0x7f */ 70 KEY_KP8, KEY_KP9, KEY_KP0, KEY_KPDOT, 71 KEY_102ND, KEY_COMPOSE, KEY_POWER, KEY_KPEQUAL, 72 KEY_F13, KEY_F14, KEY_F15, KEY_F16, 73 KEY_F17, KEY_F18, KEY_F19, KEY_F20, 74 KEY_F21, KEY_F22, KEY_F23, KEY_F24, 75 KEY_OPEN, KEY_HELP, KEY_PROPS, KEY_FRONT, 76 KEY_STOP, KEY_AGAIN, KEY_UNDO, KEY_CUT, 77 KEY_COPY, KEY_PASTE, KEY_FIND, KEY_MUTE, 78 /* 0x80 - 0x9f */ 79 KEY_VOLUMEUP, KEY_VOLUMEDOWN, NONE, NONE, 80 NONE, KEY_KPCOMMA, NONE, KEY_RO, 81 KEY_KATAKANAHIRAGANA, KEY_YEN,KEY_HENKAN, KEY_MUHENKAN, 82 KEY_KPJPCOMMA, NONE, NONE, NONE, 83 KEY_HANGEUL, KEY_HANJA, KEY_KATAKANA, KEY_HIRAGANA, 84 KEY_ZENKAKUHANKAKU, NONE, NONE, NONE, 85 NONE, NONE, NONE, NONE, 86 NONE, NONE, NONE, NONE, 87 /* 0xa0 - 0xbf */ 88 NONE, NONE, NONE, NONE, 89 NONE, NONE, NONE, NONE, 90 NONE, NONE, NONE, NONE, 91 NONE, NONE, NONE, NONE, 92 NONE, NONE, NONE, NONE, 93 NONE, NONE, NONE, NONE, 94 NONE, NONE, NONE, NONE, 95 NONE, NONE, NONE, NONE, 96 /* 0xc0 - 0xdf */ 97 NONE, NONE, NONE, NONE, 98 NONE, NONE, NONE, NONE, 99 NONE, NONE, NONE, NONE, 100 NONE, NONE, NONE, NONE, 101 NONE, NONE, NONE, NONE, 102 NONE, NONE, NONE, NONE, 103 NONE, NONE, NONE, NONE, 104 NONE, NONE, NONE, NONE, 105 /* 0xe0 - 0xff */ 106 KEY_LEFTCTRL, KEY_LEFTSHIFT, KEY_LEFTALT, KEY_LEFTMETA, 107 KEY_RIGHTCTRL, KEY_RIGHTSHIFT, KEY_RIGHTALT, KEY_RIGHTMETA, 108 KEY_PLAYPAUSE, KEY_STOPCD, KEY_PREVIOUSSONG,KEY_NEXTSONG, 109 KEY_EJECTCD, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE, 110 KEY_WWW, KEY_BACK, KEY_FORWARD, KEY_STOP, 111 KEY_FIND, KEY_SCROLLUP, KEY_SCROLLDOWN, KEY_EDIT, 112 KEY_SLEEP, KEY_COFFEE, KEY_REFRESH, KEY_CALC, 113 NONE, NONE, NONE, NONE, 114 115 }; 116 117 static uint16_t evdev_at_set1_scancodes[] = { 118 /* 0x00 - 0x1f */ 119 NONE, KEY_ESC, KEY_1, KEY_2, 120 KEY_3, KEY_4, KEY_5, KEY_6, 121 KEY_7, KEY_8, KEY_9, KEY_0, 122 KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_TAB, 123 KEY_Q, KEY_W, KEY_E, KEY_R, 124 KEY_T, KEY_Y, KEY_U, KEY_I, 125 KEY_O, KEY_P, KEY_LEFTBRACE, KEY_RIGHTBRACE, 126 KEY_ENTER, KEY_LEFTCTRL, KEY_A, KEY_S, 127 /* 0x20 - 0x3f */ 128 KEY_D, KEY_F, KEY_G, KEY_H, 129 KEY_J, KEY_K, KEY_L, KEY_SEMICOLON, 130 KEY_APOSTROPHE, KEY_GRAVE, KEY_LEFTSHIFT, KEY_BACKSLASH, 131 KEY_Z, KEY_X, KEY_C, KEY_V, 132 KEY_B, KEY_N, KEY_M, KEY_COMMA, 133 KEY_DOT, KEY_SLASH, KEY_RIGHTSHIFT, KEY_KPASTERISK, 134 KEY_LEFTALT, KEY_SPACE, KEY_CAPSLOCK, KEY_F1, 135 KEY_F2, KEY_F3, KEY_F4, KEY_F5, 136 /* 0x40 - 0x5f */ 137 KEY_F6, KEY_F7, KEY_F8, KEY_F9, 138 KEY_F10, KEY_NUMLOCK, KEY_SCROLLLOCK, KEY_KP7, 139 KEY_KP8, KEY_KP9, KEY_KPMINUS, KEY_KP4, 140 KEY_KP5, KEY_KP6, KEY_KPPLUS, KEY_KP1, 141 KEY_KP2, KEY_KP3, KEY_KP0, KEY_KPDOT, 142 NONE, NONE, KEY_102ND, KEY_F11, 143 KEY_F12, NONE, NONE, NONE, 144 NONE, KEY_F13, NONE, NONE, 145 /* 0x60 - 0x7f */ 146 NONE, NONE, NONE, NONE, 147 NONE, NONE, NONE, NONE, 148 NONE, NONE, NONE, NONE, 149 NONE, NONE, NONE, NONE, 150 KEY_KATAKANAHIRAGANA, KEY_HANJA, KEY_HANGEUL, KEY_RO, 151 NONE, NONE, KEY_ZENKAKUHANKAKU, KEY_HIRAGANA, 152 KEY_KATAKANA, KEY_HENKAN, NONE, KEY_MUHENKAN, 153 NONE, KEY_YEN, KEY_KPCOMMA, NONE, 154 /* 0x00 - 0x1f. 0xE0 prefixed */ 155 NONE, NONE, NONE, NONE, 156 NONE, NONE, NONE, NONE, 157 NONE, NONE, NONE, NONE, 158 NONE, NONE, NONE, NONE, 159 KEY_PREVIOUSSONG, NONE, NONE, NONE, 160 NONE, NONE, NONE, NONE, 161 NONE, KEY_NEXTSONG, NONE, NONE, 162 KEY_KPENTER, KEY_RIGHTCTRL, NONE, NONE, 163 /* 0x20 - 0x3f. 0xE0 prefixed */ 164 KEY_MUTE, KEY_CALC, KEY_PLAYPAUSE, NONE, 165 KEY_STOPCD, NONE, NONE, NONE, 166 NONE, NONE, NONE, NONE, 167 NONE, NONE, KEY_VOLUMEDOWN, NONE, 168 KEY_VOLUMEUP, NONE, KEY_HOMEPAGE, NONE, 169 NONE, KEY_KPSLASH, NONE, KEY_SYSRQ, 170 KEY_RIGHTALT, NONE, NONE, KEY_F13, 171 KEY_F14, KEY_F15, KEY_F16, KEY_F17, 172 /* 0x40 - 0x5f. 0xE0 prefixed */ 173 KEY_F18, KEY_F19, KEY_F20, KEY_F21, 174 KEY_F22, NONE, KEY_PAUSE, KEY_HOME, 175 KEY_UP, KEY_PAGEUP, NONE, KEY_LEFT, 176 NONE, KEY_RIGHT, NONE, KEY_END, 177 KEY_DOWN, KEY_PAGEDOWN, KEY_INSERT, KEY_DELETE, 178 NONE, NONE, NONE, KEY_F23, 179 KEY_F24, NONE, NONE, KEY_LEFTMETA, 180 KEY_RIGHTMETA, KEY_MENU, KEY_POWER, KEY_SLEEP, 181 /* 0x60 - 0x7f. 0xE0 prefixed */ 182 NONE, NONE, NONE, KEY_WAKEUP, 183 NONE, KEY_SEARCH, KEY_BOOKMARKS, KEY_REFRESH, 184 KEY_STOP, KEY_FORWARD, KEY_BACK, KEY_COMPUTER, 185 KEY_MAIL, KEY_MEDIA, NONE, NONE, 186 NONE, NONE, NONE, NONE, 187 NONE, NONE, NONE, NONE, 188 NONE, NONE, NONE, NONE, 189 NONE, NONE, NONE, NONE, 190 }; 191 192 static uint16_t evdev_mouse_button_codes[] = { 193 BTN_LEFT, 194 BTN_MIDDLE, 195 BTN_RIGHT, 196 BTN_SIDE, 197 BTN_EXTRA, 198 BTN_FORWARD, 199 BTN_BACK, 200 BTN_TASK, 201 }; 202 203 static uint16_t evdev_led_codes[] = { 204 LED_CAPSL, /* CLKED */ 205 LED_NUML, /* NLKED */ 206 LED_SCROLLL, /* SLKED */ 207 }; 208 209 static uint16_t evdev_nfinger_codes[] = { 210 BTN_TOOL_FINGER, 211 BTN_TOOL_DOUBLETAP, 212 BTN_TOOL_TRIPLETAP, 213 BTN_TOOL_QUADTAP, 214 BTN_TOOL_QUINTTAP, 215 }; 216 217 uint16_t 218 evdev_hid2key(int scancode) 219 { 220 return evdev_usb_scancodes[scancode]; 221 } 222 223 void 224 evdev_support_all_known_keys(struct evdev_dev *evdev) 225 { 226 size_t i; 227 228 for (i = KEY_RESERVED; i < nitems(evdev_at_set1_scancodes); i++) 229 if (evdev_at_set1_scancodes[i] != NONE) 230 evdev_support_key(evdev, evdev_at_set1_scancodes[i]); 231 } 232 233 uint16_t 234 evdev_scancode2key(int *state, int scancode) 235 { 236 uint16_t keycode; 237 238 /* translate the scan code into a keycode */ 239 keycode = evdev_at_set1_scancodes[scancode & 0x7f]; 240 switch (*state) { 241 case 0x00: /* normal scancode */ 242 switch(scancode) { 243 case 0xE0: 244 case 0xE1: 245 *state = scancode; 246 return (NONE); 247 } 248 break; 249 case 0xE0: /* 0xE0 prefix */ 250 *state = 0; 251 keycode = evdev_at_set1_scancodes[0x80 + (scancode & 0x7f)]; 252 break; 253 case 0xE1: /* 0xE1 prefix */ 254 /* 255 * The pause/break key on the 101 keyboard produces: 256 * E1-1D-45 E1-9D-C5 257 * Ctrl-pause/break produces: 258 * E0-46 E0-C6 (See above.) 259 */ 260 *state = 0; 261 if ((scancode & 0x7f) == 0x1D) 262 *state = scancode; 263 return (NONE); 264 /* NOT REACHED */ 265 case 0x1D: /* pause / break */ 266 case 0x9D: 267 if ((*state ^ scancode) & 0x80) 268 return (NONE); 269 *state = 0; 270 if ((scancode & 0x7f) != 0x45) 271 return (NONE); 272 keycode = KEY_PAUSE; 273 break; 274 } 275 276 return (keycode); 277 } 278 279 void 280 evdev_push_mouse_btn(struct evdev_dev *evdev, int buttons) 281 { 282 size_t i; 283 284 for (i = 0; i < nitems(evdev_mouse_button_codes); i++) 285 evdev_push_key(evdev, evdev_mouse_button_codes[i], 286 buttons & (1 << i)); 287 } 288 289 void 290 evdev_push_leds(struct evdev_dev *evdev, int leds) 291 { 292 size_t i; 293 294 /* Some drivers initialize leds before evdev */ 295 if (evdev == NULL) 296 return; 297 298 for (i = 0; i < nitems(evdev_led_codes); i++) 299 evdev_push_led(evdev, evdev_led_codes[i], leds & (1 << i)); 300 } 301 302 void 303 evdev_push_repeats(struct evdev_dev *evdev, keyboard_t *kbd) 304 { 305 /* Some drivers initialize typematics before evdev */ 306 if (evdev == NULL) 307 return; 308 309 evdev_push_event(evdev, EV_REP, REP_DELAY, kbd->kb_delay1); 310 evdev_push_event(evdev, EV_REP, REP_PERIOD, kbd->kb_delay2); 311 } 312 313 void 314 evdev_support_nfingers(struct evdev_dev *evdev, int nfingers) 315 { 316 int i; 317 318 for (i = 0; i < MIN(nitems(evdev_nfinger_codes), nfingers); i++) 319 evdev_support_key(evdev, evdev_nfinger_codes[i]); 320 } 321 322 void 323 evdev_send_nfingers(struct evdev_dev *evdev, int nfingers) 324 { 325 int i; 326 327 EVDEV_LOCK_ASSERT(evdev); 328 329 if (nfingers > nitems(evdev_nfinger_codes)) 330 nfingers = nitems(evdev_nfinger_codes); 331 332 for (i = 0; i < nitems(evdev_nfinger_codes); i++) 333 evdev_send_event(evdev, EV_KEY, evdev_nfinger_codes[i], 334 nfingers == i + 1); 335 } 336 337 void 338 evdev_push_nfingers(struct evdev_dev *evdev, int nfingers) 339 { 340 EVDEV_ENTER(evdev); 341 evdev_send_nfingers(evdev, nfingers); 342 EVDEV_EXIT(evdev); 343 }
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