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/* This file is part of cputemp2maxfreq.
Copyright (C) 2023-2024 pa4wdh
cputemp2maxfreq 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 3 of the License , or
(at your option) any later version.
cputemp2maxfreq 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 cputemp2maxfreq; see the file COPYING. If not, see
<http://www.gnu.org/licenses>.
*/
#include <fcntl.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <dirent.h>
#include <sys/types.h>
#include "debug.h"
#include "sysfs.h"
#include "cputemp2maxfreq.h"
extern struct s_cpudata cpudata;
// Set a cpufreq parameter to a value
int cpufreq_set_str(char *parameter,char *value,long int checkdelay)
{
int cpu;
char sysfs_file[128];
int done=0;
DEBUG1_CPUFREQ("Set %s to %s\n",parameter,value)
if (cpudata.cpulist==NULL)
{
DEBUG1_CPUFREQ("No CPU list\n");
return -1;
}
for(cpu=0;cpu<cpudata.cpulist_len;cpu++)
{
DEBUG2_CPUFREQ("Set CPU %s\n",cpudata.cpulist[cpu]);
snprintf(sysfs_file,128,"/sys/devices/system/cpu/%s/cpufreq/%s",cpudata.cpulist[cpu],parameter);
if (sysfs_write_str(sysfs_file,value,checkdelay)!=0)
{
DEBUG1_CPUFREQ("Failed to set %s\n",cpudata.cpulist[cpu]);
return -1;
}
done++;
}
return done;
}
// This is just a wrapper around cpufreq_set_str with long int to string
// conversion
int cpufreq_set_long_int(char *parameter,long int value,long int checkdelay)
{
char buf[255];
snprintf(buf,255,"%ld",value);
return cpufreq_set_str(parameter,buf,checkdelay);
}
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