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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 | |
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11 | #include "../common/common.h" |
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12 | #include "../common/input.h" |
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13 | #include "in_evdev.h" |
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14 | |
819ef025 |
15 | #define KEYBITS_BIT(x) (keybits[(x)/sizeof(keybits[0])/8] & \ |
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16 | (1 << ((x) & (sizeof(keybits[0])*8-1)))) |
17 | |
819ef025 |
18 | static const char * const in_evdev_prefix = "evdev:"; |
19 | static const char * const in_evdev_keys[KEY_MAX + 1] = { |
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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 | |
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106 | static void in_evdev_probe(void) |
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107 | { |
108 | int i; |
109 | |
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110 | for (i = 0;; i++) |
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111 | { |
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112 | int u, ret, fd, keybits[(KEY_MAX+1)/sizeof(int)]; |
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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) { |
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124 | printf("in_evdev: ioctl failed on %s\n", name); |
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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) { |
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133 | printf("in_evdev: ioctl failed on %s\n", name); |
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134 | goto skip; |
135 | } |
136 | |
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137 | /* check for interesting keys */ |
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138 | for (u = 0; u < KEY_MAX + 1; u++) { |
139 | if (KEYBITS_BIT(u) && u != KEY_POWER && u != KEY_SLEEP) |
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140 | count++; |
141 | } |
142 | |
143 | if (count == 0) |
144 | goto skip; |
145 | |
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146 | strcpy(name, in_evdev_prefix); |
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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); |
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151 | continue; |
152 | |
153 | skip: |
154 | close(fd); |
155 | } |
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156 | } |
157 | |
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158 | static void in_evdev_free(void *drv_data) |
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159 | { |
160 | close((int)drv_data); |
161 | } |
162 | |
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163 | static int in_evdev_get_bind_count(void) |
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164 | { |
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165 | return KEY_MAX + 1; |
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166 | } |
167 | |
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168 | /* returns bitfield of active binds or -1 if nothing |
169 | * changed from previous time */ |
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170 | int in_evdev_update(void *drv_data, int *binds) |
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171 | { |
172 | struct input_event ev[16]; |
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173 | int keybits[(KEY_MAX+1)/sizeof(int)]; |
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174 | int fd = (int)drv_data; |
175 | int result = 0, changed = 0; |
176 | int rd, ret, u; |
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177 | |
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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; |
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184 | } |
185 | |
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186 | changed = 1; |
187 | } |
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188 | |
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189 | if (!changed) |
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190 | return -1; |
191 | |
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192 | ret = ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits); |
193 | if (ret == -1) { |
194 | perror("in_evdev: ioctl failed"); |
195 | return 0; |
196 | } |
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197 | |
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198 | for (u = 0; u < KEY_MAX + 1; u++) { |
199 | if (KEYBITS_BIT(u)) { |
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200 | result |= binds[u]; |
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201 | } |
4f96f79c |
202 | } |
203 | |
204 | return result; |
205 | } |
206 | |
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207 | static void in_evdev_set_blocking(void *data, int y) |
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208 | { |
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209 | long flags; |
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210 | int ret; |
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211 | |
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212 | flags = (long)fcntl((int)data, F_GETFL); |
213 | if ((int)flags == -1) { |
214 | perror("in_evdev: F_GETFL fcntl failed"); |
215 | return; |
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216 | } |
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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 | |
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226 | int in_evdev_update_keycode(void **data, int dcount, int *which, int *is_down, int timeout_ms) |
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227 | { |
228 | const int *fds = (const int *)data; |
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229 | struct timeval tv, *timeout = NULL; |
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230 | int i, fdmax = -1; |
231 | |
f484a9fe |
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 | |
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241 | for (i = 0; i < dcount; i++) |
242 | if (fds[i] > fdmax) fdmax = fds[i]; |
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243 | |
244 | while (1) |
245 | { |
246 | struct input_event ev[64]; |
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247 | int ret, fd = -1, rd; |
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248 | fd_set fdset; |
249 | |
250 | FD_ZERO(&fdset); |
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251 | for (i = 0; i < dcount; i++) |
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252 | FD_SET(fds[i], &fdset); |
253 | |
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254 | ret = select(fdmax + 1, &fdset, NULL, NULL, timeout); |
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255 | if (ret == -1) |
256 | { |
257 | perror("in_evdev: select failed"); |
258 | sleep(1); |
259 | return 0; |
260 | } |
261 | |
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262 | if (ret == 0) |
263 | return 0; /* timeout */ |
264 | |
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265 | for (i = 0; i < dcount; i++) |
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266 | if (FD_ISSET(fds[i], &fdset)) |
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267 | *which = i, fd = fds[i]; |
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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 | |
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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 | |
f484a9fe |
281 | if (is_down != NULL) |
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282 | *is_down = ev[i].value; |
283 | return ev[i].code; |
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284 | } |
3b13ec65 |
285 | } |
3427e573 |
286 | } |
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287 | |
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288 | static int in_evdev_menu_translate(int keycode) |
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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; |
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299 | } |
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300 | } |
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301 | |
819ef025 |
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) |
3427e573 |
317 | { |
318 | const char *name = NULL; |
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319 | if (keycode >= 0 && keycode <= KEY_MAX) |
3427e573 |
320 | name = in_evdev_keys[keycode]; |
321 | if (name == NULL) |
322 | name = "Unkn"; |
323 | |
324 | return name; |
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325 | } |
326 | |
819ef025 |
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 | |