linux-imx

// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * sysfs.c sysfs ABI access functions for TMON program

 *

 * Copyright (C) 2013 Intel Corporation. All rights reserved.

 *

 * Author: Jacob Pan <jacob.jun.pan@linux.intel.com>

 */

#include <unistd.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdint.h>

#include <dirent.h>

#include <libintl.h>

#include <ctype.h>

#include <time.h>

#include <syslog.h>

#include <sys/time.h>

#include <errno.h>

​

#include "tmon.h"

​

struct tmon_platform_data ptdata;

const char *trip_type_name[] = {

    "critical",

    "hot",

    "passive",

    "active",

};

​

int sysfs_set_ulong(char *path, char *filename, unsigned long val)

{

    FILE *fd;

    int ret = -1;

    char filepath[256];

​

    snprintf(filepath, 256, "%s/%s", path, filename);

​

    fd = fopen(filepath, "w");

    if (!fd) {

        syslog(LOG_ERR, "Err: open %s: %s\n", __func__, filepath);

        return ret;

    }

    ret = fprintf(fd, "%lu", val);

    fclose(fd);

​

    return 0;

}

​

/* history of thermal data, used for control algo */

#define NR_THERMAL_RECORDS 3

struct thermal_data_record trec[NR_THERMAL_RECORDS];

int cur_thermal_record; /* index to the trec array */

​

static int sysfs_get_ulong(char *path, char *filename, unsigned long *p_ulong)

{

    FILE *fd;

    int ret = -1;

    char filepath[256];

​

    snprintf(filepath, 256, "%s/%s", path, filename);

​