| 1 | // vim:shiftwidth=2:expandtab |
| 2 | #define _GNU_SOURCE |
| 3 | #include <stdio.h> |
| 4 | #include <string.h> |
| 5 | #include <sys/types.h> |
| 6 | #include <sys/stat.h> |
| 7 | #include <fcntl.h> |
| 8 | #include <unistd.h> |
| 9 | #include <sys/ioctl.h> |
| 10 | #include <errno.h> |
| 11 | #include <linux/input.h> |
| 12 | |
| 13 | #include "header.h" |
| 14 | #include "realfuncs.h" |
| 15 | |
| 16 | static int ifds[2] = { -1, -1 }; |
| 17 | static int keystate; |
| 18 | |
| 19 | int host_init(void) |
| 20 | { |
| 21 | char buff[64]; |
| 22 | int i, ifd, ret; |
| 23 | |
| 24 | for (ifd = -1, i = 0; ifds[0] == -1 || ifds[1] == -1; i++) { |
| 25 | snprintf(buff, sizeof(buff), "/dev/input/event%i", i); |
| 26 | ifd = open(buff, O_RDONLY | O_NONBLOCK); |
| 27 | if (ifd == -1) |
| 28 | break; |
| 29 | |
| 30 | ret = ioctl(ifd, EVIOCGNAME(sizeof(buff)), buff); |
| 31 | if (ret < 0) |
| 32 | break; |
| 33 | |
| 34 | if (strcasestr(buff, "gpio") != NULL) { |
| 35 | ifds[0] = ifd; |
| 36 | continue; |
| 37 | } |
| 38 | if (strcasestr(buff, "keypad") != NULL) { |
| 39 | ifds[1] = ifd; |
| 40 | continue; |
| 41 | } |
| 42 | close(ifd); |
| 43 | } |
| 44 | |
| 45 | if (ifds[0] < 0) |
| 46 | fprintf(stderr, PFX "missing buttons\n"); |
| 47 | if (ifds[1] < 0) |
| 48 | fprintf(stderr, PFX "missing keypad\n"); |
| 49 | |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | static const struct { |
| 54 | unsigned short key; |
| 55 | unsigned short btn; |
| 56 | } key_map[] = { |
| 57 | { KEY_LEFT, GP2X_LEFT }, |
| 58 | { KEY_RIGHT, GP2X_RIGHT }, |
| 59 | { KEY_UP, GP2X_UP }, |
| 60 | { KEY_DOWN, GP2X_DOWN }, |
| 61 | { KEY_PAGEUP, GP2X_Y }, |
| 62 | { BTN_BASE, GP2X_Y }, |
| 63 | { KEY_END, GP2X_B }, |
| 64 | { BTN_BASE2, GP2X_B }, |
| 65 | { KEY_PAGEDOWN, GP2X_X }, |
| 66 | { BTN_BASE3, GP2X_X }, |
| 67 | { KEY_HOME, GP2X_A }, |
| 68 | { BTN_BASE4, GP2X_A }, |
| 69 | { KEY_RIGHTSHIFT, GP2X_L }, |
| 70 | { BTN_TL, GP2X_L }, |
| 71 | { KEY_RIGHTCTRL, GP2X_R }, |
| 72 | { BTN_TR, GP2X_R }, |
| 73 | { KEY_LEFTALT, GP2X_START }, |
| 74 | { BTN_START, GP2X_START }, |
| 75 | { KEY_LEFTCTRL, GP2X_SELECT }, |
| 76 | { BTN_SELECT, GP2X_SELECT }, |
| 77 | { KEY_COMMA, GP2X_VOL_DOWN }, |
| 78 | { KEY_DOT, GP2X_VOL_UP }, |
| 79 | { KEY_Q, GP2X_PUSH }, |
| 80 | }; |
| 81 | |
| 82 | int host_read_btns(void) |
| 83 | { |
| 84 | struct input_event ev; |
| 85 | int i, ret; |
| 86 | |
| 87 | while (1) |
| 88 | { |
| 89 | ret = read(ifds[0], &ev, sizeof(ev)); |
| 90 | if (ret < (int) sizeof(ev)) { |
| 91 | if (errno != EAGAIN && errno != EWOULDBLOCK) |
| 92 | perror(PFX "read error"); |
| 93 | |
| 94 | ret = read(ifds[1], &ev, sizeof(ev)); |
| 95 | if (ret < (int) sizeof(ev)) |
| 96 | if (errno != EAGAIN && errno != EWOULDBLOCK) |
| 97 | perror(PFX "read error"); |
| 98 | } |
| 99 | |
| 100 | if (ret < (int) sizeof(ev)) |
| 101 | return keystate; |
| 102 | |
| 103 | if (ev.type != EV_KEY) |
| 104 | continue; |
| 105 | |
| 106 | for (i = 0; i < sizeof(key_map) / sizeof(key_map[0]); i++) { |
| 107 | if (key_map[i].key != ev.code) |
| 108 | continue; |
| 109 | if (ev.value) |
| 110 | keystate |= (1 << key_map[i].btn); |
| 111 | else |
| 112 | keystate &= ~(1 << key_map[i].btn); |
| 113 | break; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | return keystate; |
| 118 | } |
| 119 | |