keyboard.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1997 S��ren Schmidt
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer
12 *    in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD: stable/11/lib/libvgl/keyboard.c 330897 2018-03-14 03:19:51Z eadler $");
33
34#include <stdio.h>
35#include <sys/types.h>
36#include <sys/ioctl.h>
37#include <termios.h>
38#include <sys/time.h>
39#include <sys/fbio.h>
40#include <sys/kbio.h>
41#include "vgl.h"
42
43static struct termios VGLKeyboardTty;
44static int VGLKeyboardMode = -1;
45
46int
47VGLKeyboardInit(int mode)
48{
49  static struct termios term;
50
51  ioctl(0, KDGKBMODE, &VGLKeyboardMode);
52  tcgetattr(0, &VGLKeyboardTty);
53
54  term = VGLKeyboardTty;
55  cfmakeraw(&term);
56  term.c_iflag = IGNPAR | IGNBRK;
57  term.c_oflag = OPOST | ONLCR;
58  term.c_cflag = CREAD | CS8;
59  term.c_lflag &= ~(ICANON | ECHO | ISIG);
60  term.c_cc[VTIME] = 0;
61  term.c_cc[VMIN] = 0;
62  cfsetispeed(&term, 9600);
63  cfsetospeed(&term, 9600);
64  tcsetattr(0, TCSANOW | TCSAFLUSH, &term);
65
66  switch (mode) {
67  case VGL_RAWKEYS:
68    ioctl(0, KDSKBMODE, K_RAW);
69    break;
70  case VGL_CODEKEYS:
71    ioctl(0, KDSKBMODE, K_CODE);
72    break;
73  case VGL_XLATEKEYS:
74    ioctl(0, KDSKBMODE, K_XLATE);
75    break;
76  }
77  return 0;
78}
79
80void
81VGLKeyboardEnd()
82{
83  if (VGLKeyboardMode != -1) {
84    ioctl(0, KDSKBMODE, VGLKeyboardMode);
85    tcsetattr(0, TCSANOW | TCSAFLUSH, &VGLKeyboardTty);
86  }
87}
88
89int
90VGLKeyboardGetCh()
91{
92  unsigned char ch = 0;
93
94  read (0, &ch, 1);
95  return (int)ch;
96}
97