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 (since 2.1.30),
67 with yet another 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 */
98 static int valid_rates[] = { 300, 267, 240, 218, 200, 185, 171, 160, 150,
99 133, 120, 109, 100, 92, 86, 80, 75, 67,
100 60, 55, 50, 46, 43, 40, 37, 33, 30, 27,
102 #define RATE_COUNT (sizeof( valid_rates ) / sizeof( int ))
104 static int valid_delays[] = { 250, 500, 750, 1000 };
105 #define DELAY_COUNT (sizeof( valid_delays ) / sizeof( int ))
108 KDKBDREP_ioctl_ok(double rate, int delay, int silent) {
109 /* This ioctl is defined in <linux/kd.h> but is not
110 implemented anywhere - must be in some m68k patches. */
111 struct kbd_repeat kbdrep_s;
113 /* don't change, just test */
114 kbdrep_s.period = -1;
116 if (ioctl( 0, KDKBDREP, &kbdrep_s )) {
117 if (errno == EINVAL || errno == ENOTTY)
119 perror( "ioctl(KDKBDREP)" );
124 printf("old delay %d, period %d\n",
125 kbdrep_s.delay, kbdrep_s.period);
129 if (rate == 0) /* switch repeat off */
132 kbdrep_s.period = 1000.0 / rate; /* convert cps to msec */
133 if (kbdrep_s.period < 1)
135 kbdrep_s.delay = delay;
136 if (kbdrep_s.delay < 1)
139 if (ioctl(0, KDKBDREP, &kbdrep_s)) {
140 perror("ioctl(KDKBDREP)");
145 if (kbdrep_s.period == 0)
148 rate = 1000.0 / (double) kbdrep_s.period;
151 printf( _("Typematic Rate set to %.1f cps (delay = %d ms)\n"),
152 rate, kbdrep_s.delay );
154 return 1; /* success! */
158 KIOCSRATE_ioctl_ok(double rate, int delay, int silent) {
160 struct kbd_rate kbdrate_s;
163 fd = open("/dev/kbd", O_RDONLY);
165 perror( "open(/dev/kbd)" );
169 kbdrate_s.period = (int) (rate + 0.5); /* round up */
170 kbdrate_s.delay = delay * HZ / 1000; /* convert ms to Hz */
171 if (kbdrate_s.period > 50)
172 kbdrate_s.period = 50;
174 if (ioctl( fd, KIOCSRATE, &kbdrate_s )) {
175 perror( "ioctl(KIOCSRATE)" );
181 printf( "Typematic Rate set to %d cps (delay = %d ms)\n",
182 kbdrate_s.period, kbdrate_s.delay * 1000 / HZ );
185 #else /* no KIOCSRATE */
187 #endif /* KIOCSRATE */
191 sigalrmhandler( int sig ) {
192 fprintf( stderr, "kbdrate: Failed waiting for kbd controller!\n" );
197 main( int argc, char **argv ) {
199 double rate = 5.0; /* Default rate */
200 int delay = 200; /* Default delay */
202 double rate = 10.9; /* Default rate */
203 int delay = 250; /* Default delay */
205 int value = 0x7f; /* Maximum delay with slowest rate */
206 /* DO NOT CHANGE this value */
214 set_progname(argv[0]);
216 setlocale(LC_ALL, "");
217 bindtextdomain(PACKAGE, LOCALEDIR);
221 (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version")))
222 print_version_and_exit();
224 while ( (c = getopt( argc, argv, "r:d:sv" )) != EOF ) {
227 rate = atof( optarg );
230 delay = atoi( optarg );
237 _("Usage: kbdrate [-V] [-s] [-r rate] [-d delay]\n"));
242 if(KDKBDREP_ioctl_ok(rate, delay, silent)) /* m68k? */
245 if(KIOCSRATE_ioctl_ok(rate, delay, silent)) /* sparc? */
251 for (i = 0; i < RATE_COUNT; i++)
252 if (rate * 10 >= valid_rates[i]) {
259 for (i = 0; i < DELAY_COUNT; i++)
260 if (delay <= valid_delays[i]) {
266 if ( (fd = open( "/dev/port", O_RDWR )) < 0) {
267 perror( _("Cannot open /dev/port") );
271 signal( SIGALRM, sigalrmhandler );
275 lseek( fd, 0x64, 0 );
276 if (read( fd, &data, 1 ) == -1) {
280 } while ((data & 2) == 2 ); /* wait */
282 lseek( fd, 0x60, 0 );
283 data = 0xf3; /* set typematic rate */
284 if (write( fd, &data, 1 ) == -1) {
290 lseek( fd, 0x64, 0 );
291 if (read( fd, &data, 1 ) == -1) {
295 } while ((data & 2) == 2 ); /* wait */
299 lseek( fd, 0x60, 0 );
301 if (write( fd, &value, 1 ) == -1) {
309 printf( _("Typematic Rate set to %.1f cps (delay = %d ms)\n"),
310 valid_rates[value & 0x1f] / 10.0,
311 valid_delays[ (value & 0x60) >> 5 ] );