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/*
* @copyright Copyright (c) 2017-2020 TOYOTA MOTOR CORPORATION.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "soc_temperature_hal.h"
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "soc_temperature_hal_soctemperaturehallog.h"
#define MAX_TEMPERATURE_FROM_DRIVER_LENGTH (9) // 9bytes can content -999999\n\0 - 9999999\n\0 (unit:millicelsius)
#define DECIMAL (10)
#define THERMAL_ZONE0_TEMPERATURE_PATH "/sys/class/thermal/thermal_zone0/temp"
#define THERMAL_ZONE1_TEMPERATURE_PATH "/sys/class/thermal/thermal_zone1/temp"
#define THERMAL_ZONE2_TEMPERATURE_PATH "/sys/class/thermal/thermal_zone2/temp"
EFrameworkunifiedStatus GetCoreTemperature(int64_t* temperature, const char* node_path) {
if ((NULL == temperature) || (NULL == node_path)) {
return eFrameworkunifiedStatusNullPointer;
}
char sz_temperature[MAX_TEMPERATURE_FROM_DRIVER_LENGTH] = { 0 };
// read temperature
int fd = open(node_path, O_RDONLY);
if (0 > fd) {
FRAMEWORKUNIFIEDLOG(ZONE_ERR, __FUNCTION__, "open error(%d,%s)", errno, strerror(errno));
return eFrameworkunifiedStatusFail;
}
ssize_t ret = read(fd, sz_temperature, MAX_TEMPERATURE_FROM_DRIVER_LENGTH - 1);
int read_error = errno;
close(fd);
if (-1 == ret) {
FRAMEWORKUNIFIEDLOG(ZONE_ERR, __FUNCTION__, "read error(%d,%s)", read_error, strerror(read_error));
return eFrameworkunifiedStatusFail;
}
errno = 0;
int64_t temp = strtol(sz_temperature, NULL, DECIMAL);
if (errno) {
FRAMEWORKUNIFIEDLOG(ZONE_ERR, __FUNCTION__, "strtol error(%d,%s)", errno, strerror(errno));
return eFrameworkunifiedStatusFail;
}
*temperature = temp;
return eFrameworkunifiedStatusOK;
}
// Get SoC temperature value.
EFrameworkunifiedStatus GetSoCTemperature(float *temperature) {
if (NULL == temperature) {
FRAMEWORKUNIFIEDLOG(ZONE_ERR, __FUNCTION__, "parameter *temperature is null");
return eFrameworkunifiedStatusNullPointer;
}
// Get temperature from thermal_zone0
int64_t temperature0 = 0;
EFrameworkunifiedStatus e_status = GetCoreTemperature(&temperature0, THERMAL_ZONE0_TEMPERATURE_PATH);
if (eFrameworkunifiedStatusOK != e_status) {
FRAMEWORKUNIFIEDLOG(ZONE_ERR, __FUNCTION__, "get temperature0 failed");
return eFrameworkunifiedStatusFail;
}
// Get temperature from thermal_zone1
int64_t temperature1 = 0;
e_status = GetCoreTemperature(&temperature1, THERMAL_ZONE1_TEMPERATURE_PATH);
if (eFrameworkunifiedStatusOK != e_status) {
FRAMEWORKUNIFIEDLOG(ZONE_ERR, __FUNCTION__, "get temperature1 failed");
return eFrameworkunifiedStatusFail;
}
// Get temperature from thermal_zone2
int64_t temperature2 = 0;
e_status = GetCoreTemperature(&temperature2, THERMAL_ZONE2_TEMPERATURE_PATH);
if (eFrameworkunifiedStatusOK != e_status) {
FRAMEWORKUNIFIEDLOG(ZONE_ERR, __FUNCTION__, "get temperature2 failed");
return eFrameworkunifiedStatusFail;
}
// get max temperature
int64_t max_temperature = temperature0;
if (max_temperature < temperature1) {
max_temperature = temperature1;
}
if (max_temperature < temperature2) {
max_temperature = temperature2;
}
*temperature = max_temperature / 1000.0f;
return eFrameworkunifiedStatusOK;
}
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