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/*
* Copyright (C) 2003,2004 Rene Rebe <rene@rocklinux.org>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Based upon the acpi version:
* Copyright (C) 2002,2003,2004 Mattia Dongili<dongili@supereva.it>
* George Staikos <staikos@0wned.org>
*/
#include "libsys.h"
int tokenize (FILE *fp, char *t, char *v);
char info_file[255];
char bat_file[255];
char tag[255];
char val[255];
char version[101];
int bat_num = 0;
static int err = 0;
int tokenize (FILE *fp, char *t, char *v) {
char str[255];
char *s1, *s2;
t[0] = v[0] = 0;
if (fgets(str, 255, fp) == NULL)
return EOF;
if ((s1 = strtok(str, ":")) == NULL)
return 0;
s2 = s1 + strlen (s1) - 1;
/* remove trailing spaces */
for ( ; s1 != s2 ; --s2)
if ( *s2 != ' ')
break;
else
*s2 = 0;
strncpy (t, s1, 255);
t[254] = 0;
if ((s1 = strtok(NULL, ":")) == NULL)
return 0;
for ( ; *s1 != 0 ; ++s1)
if ( *s1 != ' ')
break;
strncpy (v, s1, 255);
v[254] = 0;
return 1;
}
/* void libsys_init(void)
*
* Initialize local variables.
*/
int libsys_init(void) {
FILE *fp;
snprintf(info_file, 255, "%s/info", PMU_PROC_DIR);
snprintf(bat_file, 255, "%s/battery_0", PMU_PROC_DIR);
fp = fopen(info_file, "r");
if (!fp) {
cp_log(LOG_ERR, "libsys_init(): %s: %s\n", info_file, strerror(errno));
err++;
return -1;
}
while (tokenize(fp, tag, val) != EOF) {
if (strcmp (tag, "PMU driver version") == 0) {
sprintf (version, "%s - ", val);
}
else if (strcmp (tag, "PMU firmware version") == 0) {
strncat (version, val, 100-strlen(version));
}
}
fclose(fp);
cp_log(LOG_NOTICE, "libsys_init(): PMU driver/firmware version %s\n", version);
return 0;
}
/* void libsys_fini (void)
*
* Free allocated structures.
*/
void libsys_fini (void) {}
/* int scan_system_info(sys_info *s)
*
* Reads PMU info and fills the input sys_info struct.
* Implements the prototype needed by cpufreqd to get
* info from the PM layer.
*
* Returns 0 on success, -1 otherwise
*
*/
int scan_system_info(sys_info *s) {
FILE *fp;
float bat_charge = .0;
float bat_max_charge = .0;
/* check if _init was successful */
if (err>0)
return -1;
/* set version information */
strncpy(s->version, version, 101);
s->version[100] = 0;
/** /proc/pmu/info **/
fp = fopen(info_file, "r");
if (!fp) {
cp_log(LOG_ERR, "libsys_init(): %s: %s\n", info_file, strerror(errno));
err++;
return -1;
}
while (tokenize(fp, tag, val) != EOF) {
if (strcmp (tag, "AC Power") == 0) {
s->ac = atoi (val);
}
else if (strcmp (tag, "Battery count") == 0) {
s->has_battery = atoi (val);
}
}
fclose(fp);
/** /proc/pmu/battery_0 **/
fp = fopen(bat_file, "r");
if (!fp) {
cp_log(LOG_ERR, "scan_system_info(): %s: %s\n", bat_file, strerror(errno));
return -1;
}
while (tokenize(fp, tag, val) != EOF) {
if (strcmp (tag, "charge") == 0) {
bat_charge = atof (val);
}
else if (strcmp (tag, "max_charge") == 0) {
bat_max_charge = atof (val);
}
}
fclose(fp);
s->battery_percent = 100 * (bat_charge / bat_max_charge);
cp_log(LOG_INFO, "scan_system_info(): battery %s - %d - %s\n",
s->has_battery?"present":"absent",
s->battery_percent,
s->ac?"on-line":"off-line");
return 0;
}
#ifdef DEBUG_PMU
int main ()
{
sys_info info;
libsys_init();
scan_system_info (&info);
return 0;
}
#endif
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