summaryrefslogtreecommitdiff
Diffstat
-rw-r--r--Android.mk31
-rwxr-xr-xKconfig28
-rwxr-xr-xMakefile30
-rw-r--r--amlogic_thermal.h114
-rw-r--r--amlogic_thermal.o_shipped166
-rw-r--r--amlogic_thermal_module.c1108
-rw-r--r--thermal.cpp280
7 files changed, 311 insertions, 1446 deletions
diff --git a/thermal.cpp b/thermal.cpp
new file mode 100644
index 0000000..a138165
--- a/dev/null
+++ b/thermal.cpp
@@ -0,0 +1,280 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * 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.
+ * @author Tellen Yu
+ * @version 1.0
+ * @date 2017/7/19
+ * @par function description:
+ * - 1 thermal HAL
+ */
+
+#include <errno.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+#include <vector>
+
+#define LOG_TAG "ThermalHAL"
+#include <utils/Log.h>
+
+#include <hardware/hardware.h>
+#include <hardware/thermal.h>
+
+#define TEMPERATURE_TYPE_CPU "CPU"
+#define TEMPERATURE_TYPE_GPU "GPU"
+
+#define CPU_LABEL_0 "CPU0"
+#define CPU_LABEL_1 "CPU1"
+#define CPU_LABEL_2 "CPU2"
+#define CPU_LABEL_3 "CPU3"
+#define MAX_LENGTH 100
+#define VALUE_LENGTH 64
+
+#define CPU_USAGE_FILE "/proc/stat"
+#define TEMPERATURE_DIR "/sys/class/thermal"
+#define THERMAL_DIR "thermal_zone"
+#define CPU_ONLINE_FILE_FORMAT "/sys/devices/system/cpu/cpu%d/online"
+#define UNKNOWN_LABEL "UNKNOWN"
+
+namespace android {
+namespace amlogic {
+
+/*---------------------------------------------------------------
+* FUNCTION NAME: readSysValue
+* DESCRIPTION:
+* read value from sysfs
+* ARGUMENTS:
+* const char *path:sysfs patch
+* Return:
+* -1:fail, >=0: success
+* Note:
+*
+*---------------------------------------------------------------*/
+static int readSysValue(const char *path) {
+ int fd, len;
+ char* end;
+ char value[VALUE_LENGTH] = {0};
+
+ if ((fd = open(path, O_RDONLY)) < 0) {
+ ALOGE("readSysValue, open %s fail.", path);
+ return -1;
+ }
+
+ len = read(fd, value, VALUE_LENGTH);
+ if (len < 0) {
+ ALOGE("read error: %s, %s\n", path, strerror(errno));
+ }
+
+ close(fd);
+
+ if ((0x0A == value[len-1]) || (0x0D == value[len-1])) {
+ value[len-1] = '\0';
+ }
+
+ //ALOGI("readSysValue, path: %s, value: %s\n", path, value);
+ int val = (int) strtol(value, &end, 0);
+ if (end == value || *end != '\0' || val == INT_MAX || val == INT_MIN) {
+ //ALOGI("readSysValue, end: %p, value: %p\n", end, value);
+ return -1;
+ }
+
+ return val;
+}
+
+static ssize_t getTemperatures(thermal_module_t *module, temperature_t *list, size_t size) {
+ char path[MAX_LENGTH];
+ float temp;
+ float throttlingThreshold;
+ float shutdownThreshold;
+ size_t idx = 0;
+ DIR *dir;
+ struct dirent *de;
+
+ /** Read all available temperatures from
+ * /sys/class/thermal/thermal_zone[0-9]+/temp files.
+ * Don't guarantee that all temperatures are in Celsius. */
+ dir = opendir(TEMPERATURE_DIR);
+ if (dir == 0) {
+ ALOGE("%s: failed to open directory %s: %s", __func__, TEMPERATURE_DIR, strerror(-errno));
+ return -errno;
+ }
+
+ while ((de = readdir(dir))) {
+ if (!strncmp(de->d_name, THERMAL_DIR, strlen(THERMAL_DIR))) {
+ int val;
+
+ snprintf(path, MAX_LENGTH, "%s/%s/temp", TEMPERATURE_DIR, de->d_name);
+ val = readSysValue(path);
+ if (val < 0) {
+ continue;
+ }
+
+ temp = (float)val/1000;
+ if (list != NULL && idx < size) {
+ snprintf(path, MAX_LENGTH, "%s/%s/trip_point_1_temp", TEMPERATURE_DIR, de->d_name);
+ val = readSysValue(path);
+ if (val >= 0) {
+ throttlingThreshold = (float)val/1000;
+ }
+
+ snprintf(path, MAX_LENGTH, "%s/%s/trip_point_3_temp", TEMPERATURE_DIR, de->d_name);
+ val = readSysValue(path);
+ if (val >= 0) {
+ shutdownThreshold = (float)val/1000;
+ }
+
+ list[idx] = (temperature_t) {
+ .name = TEMPERATURE_TYPE_CPU,
+ .type = DEVICE_TEMPERATURE_CPU,
+ .current_value = temp,
+ .throttling_threshold = throttlingThreshold,
+ .shutdown_threshold = shutdownThreshold,
+ .vr_throttling_threshold = UNKNOWN_TEMPERATURE,
+ };
+ }
+
+ idx++;
+ }
+ }
+ closedir(dir);
+
+ ALOGI("current temperature:%f, throttling_threshold:%f, shutdown_threshold:%f", temp, throttlingThreshold, shutdownThreshold);
+ return idx;
+}
+
+static ssize_t getCpuUsages(thermal_module_t *module, cpu_usage_t *list) {
+ int vals, cpu_num, online;
+ ssize_t read;
+ uint64_t user, nice, system, idle, active, total;
+ char *line = NULL;
+ size_t len = 0;
+ size_t size = 0;
+ char file_name[MAX_LENGTH];
+ FILE *cpu_file;
+ FILE *file = fopen(CPU_USAGE_FILE, "r");
+
+ if (file == NULL) {
+ ALOGE("%s: failed to open: %s", __func__, strerror(errno));
+ return -errno;
+ }
+
+ /* sample:
+ cpu 6604 1513 6140 156891 1251 0 9 0 0 0
+ cpu0 1399 423 1667 38709 346 0 5 0 0 0
+ cpu1 1521 325 1211 39586 157 0 3 0 0 0
+ cpu2 1980 399 1931 38470 381 0 0 0 0 0
+ cpu3 1704 366 1331 40126 367 0 1 0 0 0
+ */
+ while ((read = getline(&line, &len, file)) != -1) {
+ // Skip non "cpu[0-9]" lines.
+ if (strnlen(line, read) < 4 || strncmp(line, "cpu", 3) != 0 || !isdigit(line[3])) {
+ free(line);
+ line = NULL;
+ len = 0;
+ continue;
+ }
+ vals = sscanf(line, "cpu%d %" SCNu64 " %" SCNu64 " %" SCNu64 " %" SCNu64, &cpu_num, &user,
+ &nice, &system, &idle);
+
+ free(line);
+ line = NULL;
+ len = 0;
+
+ if (vals != 5) {
+ ALOGE("%s: failed to read CPU information from file: %s", __func__, strerror(errno));
+ fclose(file);
+ return errno ? -errno : -EIO;
+ }
+
+ active = user + nice + system;
+ total = active + idle;
+
+ // Read online CPU information.
+ snprintf(file_name, MAX_LENGTH, CPU_ONLINE_FILE_FORMAT, cpu_num);
+ cpu_file = fopen(file_name, "r");
+ online = 0;
+ if (cpu_file == NULL) {
+ ALOGE("%s: failed to open file: %s (%s)", __func__, file_name, strerror(errno));
+ // /sys/devices/system/cpu/cpu0/online is missing on some systems, because cpu0 can't
+ // be offline.
+ online = cpu_num == 0;
+ } else if (1 != fscanf(cpu_file, "%d", &online)) {
+ ALOGE("%s: failed to read CPU online information from file: %s (%s)", __func__,
+ file_name, strerror(errno));
+ fclose(file);
+ fclose(cpu_file);
+ return errno ? -errno : -EIO;
+ } else {
+ fclose(cpu_file);
+ }
+
+ if (list != NULL) {
+ const char *cpuName = CPU_LABEL_0;
+ if (0 == cpu_num)
+ cpuName = CPU_LABEL_0;
+ else if (1 == cpu_num)
+ cpuName = CPU_LABEL_1;
+ else if (2 == cpu_num)
+ cpuName = CPU_LABEL_2;
+ else if (3 == cpu_num)
+ cpuName = CPU_LABEL_3;
+ list[size] = (cpu_usage_t) {
+ .name = cpuName,
+ .active = active,
+ .total = total,
+ .is_online = (1 == online)?true:false
+ };
+ }
+
+ size++;
+ }
+
+ //if (list != NULL) {
+ // for (size_t i = 0; i < size; ++i)
+ // ALOGI("index:%d: cpu name:%s", i, list[i].name);
+ //}
+
+ fclose(file);
+ return size;
+}
+
+static ssize_t getCoolingDevices(thermal_module_t *module, cooling_device_t *list, size_t size) {
+ return 0;
+}
+
+} // namespace amlogic
+} // namespace android
+
+
+static struct hw_module_methods_t thermal_module_methods = {
+ .open = NULL,
+};
+
+thermal_module_t HAL_MODULE_INFO_SYM = {
+ .common = {
+ .tag = HARDWARE_MODULE_TAG,
+ .module_api_version = THERMAL_HARDWARE_MODULE_API_VERSION_0_1,
+ .hal_api_version = HARDWARE_HAL_API_VERSION,
+ .id = THERMAL_HARDWARE_MODULE_ID,
+ .name = "AML Thermal HAL",
+ .author = "aml",
+ .methods = &thermal_module_methods,
+ },
+
+ .getTemperatures = android::amlogic::getTemperatures,
+ .getCpuUsages = android::amlogic::getCpuUsages,
+ .getCoolingDevices = android::amlogic::getCoolingDevices,
+};
generated by cgit at 2024-05-09 20:53:56 (GMT)