Re: Function keys without fn (was: TiBook Keyboard Question)
I made this work on my iBook2s (600MHz and 700MHz) with a small fudge to
fnset.c
The attached version should work on these machines, but it probably won't
work, or may even damage, other models. YMMV.
Will
On Tue, Jul 16, 2002 at 10:21:35AM +0200, Jesus Climent wrote:
>On Mon, Jul 15, 2002 at 05:46:28PM -0700, Wilhelm *Rafial* Fitzpatrick wrote:
>> At 2:24 AM +0200 7/16/02, Vincent Lefevre wrote:
>> >How can one do that? I'd like to be able to access the function keys
>> >directly, and use fn-F1 and fn-F2 to change the brightness.
>>
>> There is a program called fnset that lets you poke the pmu to change
>> that setting. I'm not if it has been rolled into any of the util
>> packages for powerpc yet, I got mine by finding it attached to an
>> email on this list and compiling it. I'm not sure if I even have the
>> source anymore.
>>
>> Note: I also had to set my pmud script to reset the fn keys the way I
>> wanted after waking up from sleep.
>
>The code found on pmud does not work here (or I am too dumb to make it
>work).
>
>Hardware: iBook2 700MHz.
>
>If anyone can reproduce the failure, I will report a bug and send
>hardware description.
>
>J
>
>--
>Jesus Climent | Unix System Admin | Helsinki, Finland.
>http://www.HispaLinux.es/~data/ | data.pandacrew.org
>------------------------------------------------------
>Please, encrypt mail address to me: GnuPG ID: 86946D69
>FP: BB64 2339 1CAA 7064 E429 7E18 66FC 1D7F 8694 6D69
>------------------------------------------------------
>Registered Linux user #66350 Debian 3.0 & Linux 2.4.19
>
>It's a soldier's duty. You wouldn't understand.
> --The Colonel (Akira)
_________________________________________________________________________
William R Sowerbutts will@sowerbutts.com
Coder / Guru / Nrrrd http://sowerbutts.com
main(){char*s=">#=0> ^#X@#@^7=",c=0,m;for(;c<15;c++)for
(m=-1;m<7;putchar(m++/6&c%3/2?10:s[c]-31&1<<m?42:32));}
/*
* fnset.c
* Copyright 2001 Jimi Xenidis
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Wouldn't have been able to figure out how to do this without trackpad.c
* thanks to benh
*/
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#define PMU_GET_VERSION 0xea /* get pmu firmware version # */
#define PMU_VERSION_LOMBARD 11
#define PMU_VERSION_KEYLARGO 12 /* another guess */
#define PMU_VERSION_IBOOK PMU_VERSION_KEYLARGO
const char *prog;
int debug = 0;
void
usage()
{
fprintf(stderr,
"Usage: %s [-hdfusb] [0|1]\n"
" -h Help, this message.\n"
" -d Turn debugging on.\n"
" -f Force search and setting of bits for an unknown PMU.\n"
" WARNING: may damage hardware.\n"
" -s Set, function keys require <fn> modifier.\n"
" Same as checking the box in MacOS.\n"
" -u Unset, hot keys require <fn> modifier.\n"
" Same as unchecking the box in MacOS.\n"
" -v Verbose output.\n"
" -b Brief, output adb register bit value only.\n"
" 0 Set adb register bit to 0.\n"
" May not be the same as the -u option.\n"
" 1 Set adb register bit to 1.\n"
" May not be the same as the -s option.\n"
"No arguments displays the <fn> mode as if -v was used.\n",
prog);
}
int
put(int fd, unsigned char data[], size_t sz)
{
int n;
if (debug) {
int i;
fprintf(stderr, "writing %ld bytes: {", (long)sz);
for (i = 0; i < sz; i++) {
fprintf(stderr, " 0x%02x", data[i]);
}
fputs(" }\n", stderr);
}
n = write(fd, data, sz);
if (n != sz) {
if (n == -1) {
fprintf(stderr, "%s: write(): %s\n",
prog, strerror(errno));
} else {
fprintf(stderr, "%s: write(): expected %ld got %ld\n",
prog, (long)sz, (long)n);
}
return -1;
}
return n;
}
int
get(int fd, unsigned char data[], size_t sz)
{
int n;
n = read(fd, data, sz);
if (n == -1) {
fprintf(stderr, "%s: read(): %s\n",
prog, strerror(errno));
return -1;
}
if (debug) {
int i;
fprintf(stderr, "read %d bytes", n);
if (n > 0) {
fputs(": {", stderr);
for (i = 0; i < n; i++) {
fprintf(stderr, " 0x%02x", data[i]);
}
fputs(" }", stderr);
}
fputc('\n', stderr);
}
return n;
}
int
pmu_version(int fd)
{
unsigned char data[32];
int n;
data[0] = PMU_PACKET;
data[1] = PMU_GET_VERSION;
n = put(fd, data, 2);
if (n == -1) {
return -1;
}
n = get(fd, data, sizeof (data));
if (n == -1) {
return -1;
}
if (n != 2) {
fprintf(stderr, "%s: read(): expected 2 got %d\n",
prog, n);
return -1;
}
return data[1];
}
int
show_regs(int fd, int id)
{
unsigned char data[16];
int i;
fprintf(stderr, "=== reading all registers for device %d. ===\n", id);
for (i = 0; i < 4; i++) {
data[0] = ADB_PACKET;
data[1] = ADB_READREG(id, i);
put(fd, data, 2);
get(fd, data, sizeof(data));
}
fprintf(stderr, "=== done reading all registers for device %d. ===\n", id);
return 1;
}
int
find_device(int fd, int type, int bitpos, int *bit)
{
int i;
int n;
int ret = -1;
unsigned char data[16];
for (i = 1; i < 16; i++) {
if (debug) {
fprintf(stderr, "probe adb device %d.\n", i);
}
data[0] = ADB_PACKET;
data[1] = ADB_READREG(i, 1);
n = put(fd, data, 2);
if (n == -1) {
return -1;
}
n = get(fd, data, sizeof (data));
if (n == -1) {
return -1;
}
if ((n > 0) && (data[1] == type)) {
if (ret > 0) {
fprintf(stderr, "Ignoring other keyboard at %d\n", i);
} else {
if (debug) {
fprintf(stderr, "Found keyboard at ADB id %d.\n", i);
}
ret = i;
*bit = (data[2] & (1<<bitpos)) >> bitpos;
if (debug) {
show_regs(fd, ret);
}
}
}
}
return ret;
}
int
fnset(int fd, int id, int bitpos, int bit)
{
unsigned char data[4];
int n;
/* get current state */
data[0] = ADB_PACKET;
data[1] = ADB_READREG(id, 1);
n = put(fd, data, 2);
if (n == -1) {
return 0;
}
n = get(fd, &data[1], sizeof (data) - 1);
if (n == -1) {
return 0;
}
/* write new state */
data[0] = ADB_PACKET;
data[1] = ADB_WRITEREG(id, 1);
/* keep data[2] the same */
data[3] = (data[3] & (~(1<<bitpos))) | (bit<<bitpos);
n = put(fd, data, 1 + n);
if (n == -1) {
return 0;
}
n = get(fd, data, sizeof (data));
if (n == -1) {
return 0;
}
/* read in new state */
data[0] = ADB_PACKET;
data[1] = ADB_READREG(id, 1);
n = put(fd, data, 2);
if (n == -1) {
return 0;
}
n = get(fd, data, sizeof (data));
if (n == -1) {
return 0;
}
if ((data[2] & (1<<bitpos)) != (bit<<bitpos)) {
fprintf(stderr, "bit 0x%x did not get written.\n", (bit<<bitpos));
return 0;
}
return 1;
}
int
main(int argc, char *argv[], char *envp[])
{
const char *adb = "/dev/adb";
const char *optlet = "dvhsubvP:";
extern char *optarg;
extern int optind;
int c;
unsigned int bitpos = 0;
int bit = -1;
int force = 0;
int val;
int pmu;
int fd;
int id;
int type;
int brief = 0;
int verbose = 0;
prog = argv[0];
if (argc == 1) {
/* if no arguments theb be verbose */
verbose = 1;
} else {
while((c = getopt(argc, argv, optlet)) != EOF) {
switch (c) {
case 'P':
bitpos = strtol(optarg, (char **)NULL, 0);
if (bitpos > 7) {
fprintf(stderr, "%s: bit position must be 0-8.\n", prog);
return 1;
}
break;
case 'd':
debug = 1;
break;
case 'f':
force = 1;
break;
case 'h':
usage();
return 0;
break;
case 's':
if (bit != -1) {
fprintf(stderr, "%s: conflicting arguments\n", prog);
usage();
return 1;
}
bit = 0;
break;
case 'u':
if (bit != -1) {
fprintf(stderr, "%s: conflicting arguments\n", prog);
usage();
return 1;
}
bit = 1;
break;
case 'b':
if (verbose) {
fprintf(stderr, "%s: conflicting arguments\n", prog);
usage();
return 1;
}
brief = 1 ;
break;
case 'v':
if (brief) {
fprintf(stderr, "%s: conflicting arguments\n", prog);
usage();
return 1;
}
verbose = 1 ;
break;
case '?':
default:
usage();
return 1;
break;
}
}
if (optind < argc) {
if (bit != -1) {
fprintf(stderr, "%s: conflicting arguments\n", prog);
usage();
return 1;
}
if (argv[optind][0] == '1' && argv[optind][1] == '\0') {
bit = 1;
} else if (argv[optind][0] == '0' && argv[optind][1] == '\0') {
bit = 0;
}
if (debug) {
fprintf(stderr, "set bit to: optarg: %u\n", bit);
}
++optind;
}
if (optind != argc) {
fprintf(stderr,"%s: too many arguements\n", prog);
return 1;
}
}
if (bitpos && !force) {
fprintf(stderr,
"%s: WARNING: use of bit offset other than 0 (-P option)"
"requires force (-f option) since it may damage hardware!\n",
prog);
}
fd = open(adb, O_RDWR);
if (fd < 0) {
fprintf(stderr, "%s: open(%s): %s\n",
prog, adb, strerror(errno));
return 1;
}
pmu = pmu_version(fd);
switch (pmu) {
case PMU_VERSION_IBOOK:
case PMU_VERSION_LOMBARD:
type = 0x05; /* btg: patched from 0x04 */
break;
default:
fprintf(stderr, "unknown PMU version %d\n", pmu);
if (force) {
type = 0x04;
fprintf(stderr, "forcing look up of type 0x%02x.\n", type);
} else {
close(fd);
return 1;
}
break;
case -1:
close(fd);
return 1;
break;
}
id = find_device(fd, type, bitpos, &val);
if (id == -1) {
fprintf(stderr, "Failed to find device\n");
close(fd);
return 1;
}
if (bit != -1) {
if (bit != val) {
if (debug) {
fprintf(stderr, "Changing value from %d to %d.\n", val, bit);
}
if (!fnset(fd, id, bitpos, bit)) {
if (debug) {
fprintf(stderr, "Failed to set value to %d.\n", bit);
}
close(fd);
return 1;
}
val = bit;
} else {
if (debug) {
fputs("Value already correct, nothing to do.\n", stderr);
}
}
}
if (brief) {
printf("%u\n", val);
} else if (verbose) {
if (val == 0) {
printf("Set: Function keys require <fn> modifier.\n");
} else {
printf("Unset: Hot keys require <fn> modifier.\n");
}
}
close(fd);
return 0;
}
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