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/*
superio: Handle special I/O operations needed by most Super-I/O chips
Copyright (C) 2005-2008 Jean Delvare <jdelvare@suse.de>
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301 USA.
*/
#include <stdlib.h>
#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ >= 0
#include <sys/io.h>
#else
#include <asm/io.h>
#endif
#include "superio.h"
int superio_parse_key(unsigned char *key, const char *s)
{
char *end;
int tmp;
key[0] = 0;
while (*s != '\0') {
tmp = strtol(s, &end, 0);
if ((*end != '\0' && *end != ',')
|| (tmp < 0x00 || tmp > 0xff))
return -1;
/* Byte is valid, store it */
key[++key[0]] = tmp;
/* Last byte? */
if (key[0] == SUPERIO_MAX_KEY
|| *end == '\0')
return 0;
/* Skip comma */
s = end + 1;
}
/* Unexpected end of string */
return -1;
}
void superio_write_key(int addrreg, unsigned char *key)
{
int i;
for (i = 1; i <= key[0]; i++)
outb(key[i], addrreg);
}
void superio_reset(int addrreg, int datareg)
{
/* Some chips (SMSC, Winbond) want this */
outb(0xaa, addrreg);
/* Return to "Wait For Key" state (PNP-ISA spec) */
outb(0x02, addrreg);
outb(0x02, datareg);
}
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