2 From: faith@cs.unc.edu (Rik Faith)
3 Subject: User mode keyboard rate changer
4 Date: 27 Apr 92 13:44:26 GMT
6 I put together this program, called kbdrate.c, which will reset the keyboard
7 repeat rate and delay in user mode. The program must have read/write
8 access to /dev/port, so if /dev/port is only read/writeable by group port,
9 then kbdrate must run setgid to group port (for example).
11 The "rate" is the rate in characters per second
13 The "delay" is the amount of time the key must remain depressed before it
18 kbdrate set rate to IBM default (10.9 cps, 250ms delay)
19 kbdrate -r 30.0 set rate to 30 cps and delay to 250ms
20 kbdrate -r 20.0 -s set rate to 20 cps (delay 250ms) -- don't print message
21 kbdrate -r 0 -d 0 set rate to 2.0 cps and delay to 250 ms
23 I find it useful to put kbdrate in my /etc/rc file so that the keyboard
24 rate is set to something that I find comfortable at boot time. This sure
25 beats rebuilding the kernel!
28 kbdrate.c -- Set keyboard typematic rate (and delay)
29 Created: Thu Apr 23 12:24:30 1992
30 Author: Rickard E. Faith, faith@cs.unc.edu
32 Copyright 1992 Rickard E. Faith. Distributed under the GPL.
33 This program comes with ABSOLUTELY NO WARRANTY.
34 Usage: kbdrate [-r rate] [-d delay] [-s]
35 Rate can range from 2.0 to 30.0 (units are characters per second)
36 Delay can range from 250 to 1000 (units are milliseconds)
38 Compiles under gcc 2.1 for Linux (tested with the pre-0.96 kernel)
40 Wed Jun 22 21:35:43 1994, faith@cs.unc.edu:
41 Changed valid_rates per suggestion by Andries.Brouwer@cwi.nl.
42 Wed Jun 22 22:18:29 1994, faith@cs.unc.edu:
43 Added patch for AUSTIN notebooks from John Bowman
44 (bowman@hagar.ph.utexas.edu)
46 Linux/68k modifications by Roman Hodek
47 (Roman.Hodek@informatik.uni-erlangen.de):
49 Reading/writing the Intel I/O ports via /dev/port is not the
50 English way... Such hardware dependent stuff can never work on
53 Linux/68k has an new ioctl for setting the keyboard repeat rate
54 and delay. Both values are counted in msecs, the kernel will do
55 any rounding to values possible with the underlying hardware.
57 kbdrate now first tries if the KDKBDREP ioctl is available. If it
58 is, it is used, else the old method is applied.
60 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
61 - added Native Language Support
64 Linux/SPARC modifications by Jeffrey Connell <ankh@canuck.gen.nz>:
65 It seems that the KDKBDREP ioctl is not available on this platform.
66 However, Linux/SPARC has its own ioctl for this, with yet another
67 different measurement system. Thus, try for KIOCSRATE, too.
76 #include <sys/ioctl.h>
79 #include <asm/param.h>
84 /* usually defined in <linux/kd.h> */
85 #define KDKBDREP 0x4B52 /* set keyboard delay/repeat rate;
86 * actually used values are returned */
88 int delay; /* in msec; <= 0: don't change */
89 int period; /* in msec; <= 0: don't change */
96 static int valid_rates[] = { 300, 267, 240, 218, 200, 185, 171, 160, 150,
97 133, 120, 109, 100, 92, 86, 80, 75, 67,
98 60, 55, 50, 46, 43, 40, 37, 33, 30, 27,
100 #define RATE_COUNT (sizeof( valid_rates ) / sizeof( int ))
102 static int valid_delays[] = { 250, 500, 750, 1000 };
103 #define DELAY_COUNT (sizeof( valid_delays ) / sizeof( int ))
106 KDKBDREP_ioctl_ok(double rate, int delay, int silent) {
107 /* This ioctl is defined in <linux/kd.h> but is not
108 implemented anywhere - must be in some m68k patches. */
109 struct kbd_repeat kbdrep_s;
111 /* don't change, just test */
112 kbdrep_s.period = -1;
114 if (ioctl( 0, KDKBDREP, &kbdrep_s )) {
117 perror( "ioctl(KDKBDREP)" );
122 printf("old delay %d, period %d\n",
123 kbdrep_s.delay, kbdrep_s.period);
127 if (rate == 0) /* switch repeat off */
130 kbdrep_s.period = 1000.0 / rate; /* convert cps to msec */
131 if (kbdrep_s.period < 1)
133 kbdrep_s.delay = delay;
134 if (kbdrep_s.delay < 1)
137 if (ioctl(0, KDKBDREP, &kbdrep_s)) {
138 perror("ioctl(KDKBDREP)");
143 if (kbdrep_s.period == 0)
146 rate = 1000.0 / (double) kbdrep_s.period;
149 printf( _("Typematic Rate set to %.1f cps (delay = %d ms)\n"),
150 rate, kbdrep_s.delay );
152 return 1; /* success! */
156 KIOCSRATE_ioctl_ok(double rate, int delay, int silent) {
158 struct kbd_rate kbdrate_s;
161 fd = open("/dev/kbd", O_RDONLY);
163 perror( "open(/dev/kbd)" );
167 kbdrate_s.period = (int) (rate + 0.5); /* round up */
168 kbdrate_s.delay = delay * HZ / 1000; /* convert ms to Hz */
169 if (kbdrate_s.period > 50)
170 kbdrate_s.period = 50;
172 if (ioctl( fd, KIOCSRATE, &kbdrate_s )) {
173 perror( "ioctl(KIOCSRATE)" );
179 printf( "Typematic Rate set to %d cps (delay = %d ms)\n",
180 kbdrate_s.period, kbdrate_s.delay * 1000 / HZ );
183 #else /* no KIOCSRATE */
185 #endif /* KIOCSRATE */
189 main( int argc, char **argv ) {
191 double rate = 5.0; /* Default rate */
192 int delay = 200; /* Default delay */
194 double rate = 10.9; /* Default rate */
195 int delay = 250; /* Default delay */
197 int value = 0x7f; /* Maximum delay with slowest rate */
198 /* DO NOT CHANGE this value */
206 set_progname(argv[0]);
208 setlocale(LC_ALL, "");
209 bindtextdomain(PACKAGE, LOCALEDIR);
213 (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version")))
214 print_version_and_exit();
216 while ( (c = getopt( argc, argv, "r:d:sv" )) != EOF ) {
219 rate = atof( optarg );
222 delay = atoi( optarg );
229 _("Usage: kbdrate [-V] [-s] [-r rate] [-d delay]\n"));
234 if(KDKBDREP_ioctl_ok(rate, delay, silent)) /* m68k? */
237 if(KIOCSRATE_ioctl_ok(rate, delay, silent)) /* sparc? */
243 for (i = 0; i < RATE_COUNT; i++)
244 if (rate * 10 >= valid_rates[i]) {
251 for (i = 0; i < DELAY_COUNT; i++)
252 if (delay <= valid_delays[i]) {
258 if ( (fd = open( "/dev/port", O_RDWR )) < 0) {
259 perror( _("Cannot open /dev/port") );
264 lseek( fd, 0x64, 0 );
265 read( fd, &data, 1 );
266 } while ((data & 2) == 2 ); /* wait */
268 lseek( fd, 0x60, 0 );
269 data = 0xf3; /* set typematic rate */
270 write( fd, &data, 1 );
273 lseek( fd, 0x64, 0 );
274 read( fd, &data, 1 );
275 } while ((data & 2) == 2 ); /* wait */
277 lseek( fd, 0x60, 0 );
279 write( fd, &value, 1 );
284 printf( _("Typematic Rate set to %.1f cps (delay = %d ms)\n"),
285 valid_rates[value & 0x1f] / 10.0,
286 valid_delays[ (value & 0x60) >> 5 ] );