2 * (C) GraÅžvydas "notaz" Ignotas, 2008-2010
4 * This work is licensed under the terms of any of these licenses
6 * - GNU GPL, version 2 or later.
7 * - GNU LGPL, version 2.1 or later.
8 * See the COPYING file in the top-level directory.
14 #include <sys/types.h>
17 #include <sys/ioctl.h>
19 #include <linux/input.h>
22 #include "../common/input.h"
40 #define KEY_CNT (KEY_MAX + 1)
43 #define KEYBITS_BIT(x) (keybits[(x)/sizeof(keybits[0])/8] & \
44 (1 << ((x) & (sizeof(keybits[0])*8-1))))
46 #define KEYBITS_BIT_SET(x) (keybits[(x)/sizeof(keybits[0])/8] |= \
47 (1 << ((x) & (sizeof(keybits[0])*8-1))))
49 #define KEYBITS_BIT_CLEAR(x) (keybits[(x)/sizeof(keybits[0])/8] &= \
50 ~(1 << ((x) & (sizeof(keybits[0])*8-1))))
52 int in_evdev_allow_abs_only;
54 static const char * const in_evdev_prefix = "evdev:";
55 static const char * const in_evdev_keys[KEY_CNT] = {
56 [0 ... KEY_MAX] = NULL,
57 [KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc",
58 [KEY_1] = "1", [KEY_2] = "2",
59 [KEY_3] = "3", [KEY_4] = "4",
60 [KEY_5] = "5", [KEY_6] = "6",
61 [KEY_7] = "7", [KEY_8] = "8",
62 [KEY_9] = "9", [KEY_0] = "0",
63 [KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal",
64 [KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab",
65 [KEY_Q] = "Q", [KEY_W] = "W",
66 [KEY_E] = "E", [KEY_R] = "R",
67 [KEY_T] = "T", [KEY_Y] = "Y",
68 [KEY_U] = "U", [KEY_I] = "I",
69 [KEY_O] = "O", [KEY_P] = "P",
70 [KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace",
71 [KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl",
72 [KEY_A] = "A", [KEY_S] = "S",
73 [KEY_D] = "D", [KEY_F] = "F",
74 [KEY_G] = "G", [KEY_H] = "H",
75 [KEY_J] = "J", [KEY_K] = "K",
76 [KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon",
77 [KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave",
78 [KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash",
79 [KEY_Z] = "Z", [KEY_X] = "X",
80 [KEY_C] = "C", [KEY_V] = "V",
81 [KEY_B] = "B", [KEY_N] = "N",
82 [KEY_M] = "M", [KEY_COMMA] = "Comma",
83 [KEY_DOT] = "Dot", [KEY_SLASH] = "Slash",
84 [KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk",
85 [KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space",
86 [KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1",
87 [KEY_F2] = "F2", [KEY_F3] = "F3",
88 [KEY_F4] = "F4", [KEY_F5] = "F5",
89 [KEY_F6] = "F6", [KEY_F7] = "F7",
90 [KEY_F8] = "F8", [KEY_F9] = "F9",
91 [KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock",
92 [KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7",
93 [KEY_KP8] = "KP8", [KEY_KP9] = "KP9",
94 [KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4",
95 [KEY_KP5] = "KP5", [KEY_KP6] = "KP6",
96 [KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1",
97 [KEY_KP2] = "KP2", [KEY_KP3] = "KP3",
98 [KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot",
99 [KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
100 [KEY_F11] = "F11", [KEY_F12] = "F12",
101 [KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter",
102 [KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash",
103 [KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt",
104 [KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home",
105 [KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp",
106 [KEY_LEFT] = "Left", [KEY_RIGHT] = "Right",
107 [KEY_END] = "End", [KEY_DOWN] = "Down",
108 [KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert",
109 [KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro",
110 [KEY_HELP] = "Help", [KEY_MENU] = "Menu",
111 [KEY_COFFEE] = "Coffee", [KEY_DIRECTION] = "Direction",
112 [BTN_0] = "Btn0", [BTN_1] = "Btn1",
113 [BTN_2] = "Btn2", [BTN_3] = "Btn3",
114 [BTN_4] = "Btn4", [BTN_5] = "Btn5",
115 [BTN_6] = "Btn6", [BTN_7] = "Btn7",
116 [BTN_8] = "Btn8", [BTN_9] = "Btn9",
117 [BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn",
118 [BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn",
119 [BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn",
120 [BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn",
121 [BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn",
122 [BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn",
123 [BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn",
124 [BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2",
125 [BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4",
126 [BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6",
127 [BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA",
128 [BTN_B] = "BtnB", [BTN_C] = "BtnC",
129 [BTN_X] = "BtnX", [BTN_Y] = "BtnY",
130 [BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL",
131 [BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2",
132 [BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect",
133 [BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode",
134 [BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR",
135 [BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus",
136 [BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "Tool Doubletap",
137 [BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn",
138 [BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok",
142 static void in_evdev_probe(void)
144 long keybits[KEY_CNT / sizeof(long) / 8];
145 long absbits[(ABS_MAX+1) / sizeof(long) / 8];
148 // the kernel might support and return less keys then we know about,
149 // so make sure the buffers are clear.
150 memset(keybits, 0, sizeof(keybits));
151 memset(absbits, 0, sizeof(absbits));
155 int support = 0, count = 0;
156 int u, ret, fd, kc_first = KEY_MAX, kc_last = 0;
160 snprintf(name, sizeof(name), "/dev/input/event%d", i);
161 fd = open(name, O_RDONLY|O_NONBLOCK);
164 continue; /* maybe we can access next one */
168 /* check supported events */
169 ret = ioctl(fd, EVIOCGBIT(0, sizeof(support)), &support);
171 printf("in_evdev: ioctl failed on %s\n", name);
175 if (support & (1 << EV_KEY)) {
176 ret = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
178 printf("in_evdev: ioctl failed on %s\n", name);
182 /* check for interesting keys */
183 for (u = 0; u < KEY_CNT; u++) {
184 if (KEYBITS_BIT(u)) {
189 if (u != KEY_POWER && u != KEY_SLEEP && u != BTN_TOUCH)
191 if (u == BTN_TOUCH) /* we can't deal with ts currently */
197 if (count == 0 && !in_evdev_allow_abs_only)
200 dev = calloc(1, sizeof(*dev));
204 ret = ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits);
206 printf("Warning: EVIOCGKEY not supported, will have to track state\n");
207 dev->kbits = calloc(KEY_CNT, sizeof(int));
208 if (dev->kbits == NULL) {
214 /* check for abs too */
215 if (support & (1 << EV_ABS)) {
216 struct input_absinfo ainfo;
218 ret = ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits);
221 if (absbits[0] & (1 << ABS_X)) {
222 ret = ioctl(fd, EVIOCGABS(ABS_X), &ainfo);
225 dist = ainfo.maximum - ainfo.minimum;
226 dev->abs_lzone = dist / 4;
227 dev->abs_min_x = ainfo.minimum;
228 dev->abs_max_x = ainfo.maximum;
230 if (absbits[0] & (1 << ABS_Y)) {
231 ret = ioctl(fd, EVIOCGABS(ABS_Y), &ainfo);
234 dist = ainfo.maximum - ainfo.minimum;
235 dev->abs_min_y = ainfo.minimum;
236 dev->abs_max_y = ainfo.maximum;
241 if (count == 0 && dev->abs_lzone == 0) {
247 dev->kc_first = kc_first;
248 dev->kc_last = kc_last;
249 strcpy(name, in_evdev_prefix);
250 ioctl(fd, EVIOCGNAME(sizeof(name)-6), name+6);
251 printf("in_evdev: found \"%s\" with %d events (type %08x)\n",
252 name+6, count, support);
253 in_register(name, IN_DRVID_EVDEV, fd, dev, KEY_CNT, in_evdev_keys, 0);
261 static void in_evdev_free(void *drv_data)
263 in_evdev_t *dev = drv_data;
270 static const char * const *
271 in_evdev_get_key_names(int *count)
274 return in_evdev_keys;
277 static void or_binds(const int *binds, int key, int *result)
280 for (t = 0; t < IN_BINDTYPE_COUNT; t++)
281 result[t] |= binds[IN_BIND_OFFS(key, t)];
284 /* ORs result with binds of pressed buttons
285 * XXX: should measure performance hit of this func, might need to optimize */
286 int in_evdev_update(void *drv_data, const int *binds, int *result)
288 struct input_event ev[16];
289 struct input_absinfo ainfo;
290 int keybits_[KEY_CNT / sizeof(int)];
291 int *keybits = keybits_;
292 in_evdev_t *dev = drv_data;
293 int rd, ret, u, lzone;
295 if (dev->kbits == NULL) {
296 ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits_)), keybits_);
298 perror("in_evdev: ioctl failed");
303 keybits = dev->kbits;
305 rd = read(dev->fd, ev, sizeof(ev));
306 if (rd < (int)sizeof(ev[0])) {
308 perror("in_evdev: read failed");
311 for (u = 0; u < rd / sizeof(ev[0]); u++) {
312 if (ev[u].type != EV_KEY)
314 else if (ev[u].value == 1)
315 KEYBITS_BIT_SET(ev[u].code);
316 else if (ev[u].value == 0)
317 KEYBITS_BIT_CLEAR(ev[u].code);
322 for (u = dev->kc_first; u <= dev->kc_last; u++) {
324 or_binds(binds, u, result);
327 /* map X and Y absolute to UDLR */
328 lzone = dev->abs_lzone;
330 ret = ioctl(dev->fd, EVIOCGABS(ABS_X), &ainfo);
332 if (ainfo.value < dev->abs_min_x + lzone) or_binds(binds, KEY_LEFT, result);
333 if (ainfo.value > dev->abs_max_x - lzone) or_binds(binds, KEY_RIGHT, result);
337 ret = ioctl(dev->fd, EVIOCGABS(ABS_Y), &ainfo);
339 if (ainfo.value < dev->abs_min_y + lzone) or_binds(binds, KEY_UP, result);
340 if (ainfo.value > dev->abs_max_y - lzone) or_binds(binds, KEY_DOWN, result);
347 static int in_evdev_set_blocking(in_evdev_t *dev, int y)
352 flags = (long)fcntl(dev->fd, F_GETFL);
353 if ((int)flags == -1) {
354 perror("in_evdev: F_GETFL fcntl failed");
358 if (flags & O_NONBLOCK) {
359 /* flush the event queue */
360 struct input_event ev;
362 ret = read(dev->fd, &ev, sizeof(ev));
364 while (ret == sizeof(ev));
368 flags &= ~O_NONBLOCK;
371 ret = fcntl(dev->fd, F_SETFL, flags);
373 perror("in_evdev: F_SETFL fcntl failed");
380 static int in_evdev_set_config(void *drv_data, int what, int val)
382 in_evdev_t *dev = drv_data;
386 case IN_CFG_BLOCKING:
387 return in_evdev_set_blocking(dev, val);
388 case IN_CFG_ABS_DEAD_ZONE:
389 if (val < 1 || val > 99 || dev->abs_lzone == 0)
391 /* XXX: based on X axis only, for now.. */
392 tmp = (dev->abs_max_x - dev->abs_min_x) / 2;
393 dev->abs_lzone = tmp - tmp * val / 100;
394 if (dev->abs_lzone < 1)
396 else if (dev->abs_lzone >= tmp)
397 dev->abs_lzone = tmp - 1;
406 static int in_evdev_update_keycode(void *data, int *is_down)
408 int ret_kc = -1, ret_down = 0;
409 in_evdev_t *dev = data;
410 struct input_event ev;
413 /* do single event, the caller sometimes wants
414 * to do select() in blocking mode */
415 rd = read(dev->fd, &ev, sizeof(ev));
416 if (rd < (int) sizeof(ev)) {
417 if (errno != EAGAIN) {
418 perror("in_evdev: error reading");
425 if (ev.type == EV_KEY) {
426 if (ev.value < 0 || ev.value > 1)
432 else if (ev.type == EV_ABS)
434 int lzone = dev->abs_lzone, down = 0, *last;
436 // map absolute to up/down/left/right
437 if (lzone != 0 && ev.code == ABS_X) {
438 if (ev.value < dev->abs_min_x + lzone)
440 else if (ev.value > dev->abs_max_x - lzone)
442 last = &dev->abs_lastx;
444 else if (lzone != 0 && ev.code == ABS_Y) {
445 if (ev.value < dev->abs_min_y + lzone)
447 else if (ev.value > dev->abs_max_y - lzone)
449 last = &dev->abs_lasty;
457 if (down == 0 || *last != 0) {
458 /* key up or direction change, return up event for old key */
464 ret_kc = *last = down;
476 static const struct {
482 { KEY_DOWN, PBTN_DOWN },
483 { KEY_LEFT, PBTN_LEFT },
484 { KEY_RIGHT, PBTN_RIGHT },
485 /* XXX: maybe better set this from it's plat code somehow */
487 { KEY_END, PBTN_MOK },
488 { KEY_PAGEDOWN, PBTN_MBACK },
489 { KEY_HOME, PBTN_MA2 },
490 { KEY_PAGEUP, PBTN_MA3 },
491 { KEY_LEFTCTRL, PBTN_MENU },
492 { KEY_RIGHTSHIFT, PBTN_L },
493 { KEY_RIGHTCTRL, PBTN_R },
495 { BTN_THUMB2, PBTN_MOK },
496 { BTN_THUMB, PBTN_MBACK },
497 { BTN_TRIGGER, PBTN_MA2 },
498 { BTN_TOP, PBTN_MA3 },
499 { BTN_BASE, PBTN_MENU },
500 { BTN_TOP2, PBTN_L },
501 { BTN_PINKIE, PBTN_R },
502 /* "normal" keyboards */
503 { KEY_ENTER, PBTN_MOK },
504 { KEY_ESC, PBTN_MBACK },
507 { KEY_BACKSLASH, PBTN_MENU },
508 { KEY_LEFTBRACE, PBTN_L },
509 { KEY_RIGHTBRACE, PBTN_R },
512 #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0]))
514 static int in_evdev_menu_translate(void *drv_data, int keycode)
516 in_evdev_t *dev = drv_data;
523 for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
524 if (key_pbtn_map[i].pbtn == keycode) {
525 int k = key_pbtn_map[i].key;
526 /* should really check EVIOCGBIT, but this is enough for now */
527 if (dev->kc_first <= k && k <= dev->kc_last)
533 for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
534 if (key_pbtn_map[i].key == keycode)
535 return key_pbtn_map[i].pbtn;
541 static void in_evdev_get_def_binds(int *binds)
546 if (in_evdev_defbinds[i].bit == 0 && in_evdev_defbinds[i].code == 0)
548 binds[IN_BIND_OFFS(in_evdev_defbinds[i].code, in_evdev_defbinds[i].btype)] =
549 1 << in_evdev_defbinds[i].bit;
553 /* remove binds of missing keys, count remaining ones */
554 static int in_evdev_clean_binds(void *drv_data, int *binds, int *def_binds)
556 int keybits[KEY_CNT / sizeof(int)];
557 in_evdev_t *dev = drv_data;
558 int i, t, ret, offs, count = 0;
560 memset(keybits, 0, sizeof(keybits));
561 ret = ioctl(dev->fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
563 perror("in_evdev: ioctl failed");
564 // memset(keybits, 0xff, sizeof(keybits)); /* mark all as good */
567 if (dev->abs_lzone != 0) {
568 KEYBITS_BIT_SET(KEY_LEFT);
569 KEYBITS_BIT_SET(KEY_RIGHT);
571 if (dev->abs_lzone != 0) {
572 KEYBITS_BIT_SET(KEY_UP);
573 KEYBITS_BIT_SET(KEY_DOWN);
576 for (i = 0; i < KEY_CNT; i++) {
577 for (t = 0; t < IN_BINDTYPE_COUNT; t++) {
578 offs = IN_BIND_OFFS(i, t);
580 binds[offs] = def_binds[offs] = 0;
589 void in_evdev_init(void *vdrv)
591 in_drv_t *drv = vdrv;
593 drv->prefix = in_evdev_prefix;
594 drv->probe = in_evdev_probe;
595 drv->free = in_evdev_free;
596 drv->get_key_names = in_evdev_get_key_names;
597 drv->get_def_binds = in_evdev_get_def_binds;
598 drv->clean_binds = in_evdev_clean_binds;
599 drv->set_config = in_evdev_set_config;
600 drv->update_keycode = in_evdev_update_keycode;
601 drv->menu_translate = in_evdev_menu_translate;