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>
83 /* usually defined in <linux/kd.h> */
84 #define KDKBDREP 0x4B52 /* set keyboard delay/repeat rate;
85 * actually used values are returned */
87 int delay; /* in msec; <= 0: don't change */
88 int period; /* in msec; <= 0: don't change */
97 static int valid_rates[] = { 300, 267, 240, 218, 200, 185, 171, 160, 150,
98 133, 120, 109, 100, 92, 86, 80, 75, 67,
99 60, 55, 50, 46, 43, 40, 37, 33, 30, 27,
101 #define RATE_COUNT (sizeof( valid_rates ) / sizeof( int ))
103 static int valid_delays[] = { 250, 500, 750, 1000 };
104 #define DELAY_COUNT (sizeof( valid_delays ) / sizeof( int ))
107 KDKBDREP_ioctl_ok(double rate, int delay, int silent) {
108 #if defined(KDKBDREP) && !defined(__sparc__)
109 /* This ioctl is defined in <linux/kd.h> but is not
110 implemented anywhere - must be in some m68k patches.
111 We cannot blindly try unimplemented ioctls on sparc64 -
112 the 32<->64bit transition layer does not like it. */
113 struct kbd_repeat kbdrep_s;
115 /* don't change, just test */
116 kbdrep_s.period = -1;
118 if (ioctl( 0, KDKBDREP, &kbdrep_s )) {
121 perror( "ioctl(KDKBDREP)" );
126 printf("old delay %d, period %d\n",
127 kbdrep_s.delay, kbdrep_s.period);
131 if (rate == 0) /* switch repeat off */
134 kbdrep_s.period = 1000.0 / rate; /* convert cps to msec */
135 if (kbdrep_s.period < 1)
137 kbdrep_s.delay = delay;
138 if (kbdrep_s.delay < 1)
141 if (ioctl(0, KDKBDREP, &kbdrep_s)) {
142 perror("ioctl(KDKBDREP)");
147 if (kbdrep_s.period == 0)
150 rate = 1000.0 / (double) kbdrep_s.period;
153 printf( _("Typematic Rate set to %.1f cps (delay = %d ms)\n"),
154 rate, kbdrep_s.delay );
156 return 1; /* success! */
157 #else /* no KDKBDREP or __sparc__ */
159 #endif /* KDKBDREP */
163 KIOCSRATE_ioctl_ok(double rate, int delay, int silent) {
165 struct kbd_rate kbdrate_s;
168 fd = open("/dev/kbd", O_RDONLY);
170 perror( "open(/dev/kbd)" );
174 kbdrate_s.period = (int) (rate + 0.5); /* round up */
175 kbdrate_s.delay = delay * HZ / 1000; /* convert ms to Hz */
176 if (kbdrate_s.period > 50)
177 kbdrate_s.period = 50;
179 if (ioctl( fd, KIOCSRATE, &kbdrate_s )) {
180 perror( "ioctl(KIOCSRATE)" );
186 printf( "Typematic Rate set to %d cps (delay = %d ms)\n",
187 kbdrate_s.period, kbdrate_s.delay * 1000 / HZ );
190 #else /* no KIOCSRATE */
192 #endif /* KIOCSRATE */
196 sigalrmhandler( int sig ) {
197 fprintf( stderr, "kbdrate: Failed waiting for kbd controller!\n" );
202 main( int argc, char **argv ) {
204 double rate = 20.0; /* Default rate */
205 int delay = 200; /* Default delay */
207 double rate = 10.9; /* Default rate */
208 int delay = 250; /* Default delay */
210 int value = 0x7f; /* Maximum delay with slowest rate */
211 /* DO NOT CHANGE this value */
219 set_progname(argv[0]);
221 setlocale(LC_ALL, "");
222 bindtextdomain(PACKAGE, LOCALEDIR);
226 (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version")))
227 print_version_and_exit();
229 while ( (c = getopt( argc, argv, "r:d:sv" )) != EOF ) {
232 rate = atof( optarg );
235 delay = atoi( optarg );
242 _("Usage: kbdrate [-V] [-s] [-r rate] [-d delay]\n"));
247 if(KDKBDREP_ioctl_ok(rate, delay, silent)) /* m68k? */
250 if(KIOCSRATE_ioctl_ok(rate, delay, silent)) /* sparc? */
254 /* The ioport way - will crash on sparc */
257 for (i = 0; i < RATE_COUNT; i++)
258 if (rate * 10 >= valid_rates[i]) {
265 for (i = 0; i < DELAY_COUNT; i++)
266 if (delay <= valid_delays[i]) {
272 if ( (fd = open( "/dev/port", O_RDWR )) < 0) {
273 perror( _("Cannot open /dev/port") );
277 signal( SIGALRM, sigalrmhandler );
281 lseek( fd, 0x64, 0 );
282 read( fd, &data, 1 );
283 } while ((data & 2) == 2 ); /* wait */
285 lseek( fd, 0x60, 0 );
286 data = 0xf3; /* set typematic rate */
287 write( fd, &data, 1 );
290 lseek( fd, 0x64, 0 );
291 read( fd, &data, 1 );
292 } while ((data & 2) == 2 ); /* wait */
296 lseek( fd, 0x60, 0 );
298 write( fd, &value, 1 );
303 printf( _("Typematic Rate set to %.1f cps (delay = %d ms)\n"),
304 valid_rates[value & 0x1f] / 10.0,
305 valid_delays[ (value & 0x60) >> 5 ] );