Shamu: add Hardware Properties HAL
Add getCpuTemperatures, getGpuTemperatures, getBatteryTemperatures
and getCpuUsages implementations.
Bug: 22407109
Change-Id: I23a2d15030ef25922bdb81687d471dd5949f9766
diff --git a/device.mk b/device.mk
index 3b0d0cc..d98457d 100644
--- a/device.mk
+++ b/device.mk
@@ -352,7 +352,8 @@
ro.qualcomm.perf.cores_online=2
PRODUCT_PACKAGES += \
- power.shamu
+ power.shamu \
+ hardware_properties.shamu
# For android_filesystem_config.h
PRODUCT_PACKAGES += \
diff --git a/hardware_properties/Android.mk b/hardware_properties/Android.mk
new file mode 100644
index 0000000..2e4605c
--- /dev/null
+++ b/hardware_properties/Android.mk
@@ -0,0 +1,26 @@
+#
+# Copyright 2015 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.
+#
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_CFLAGS := -Wno-unused-parameter
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SRC_FILES := hardware_properties.c
+LOCAL_SHARED_LIBRARIES := liblog libcutils
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE := hardware_properties.shamu
+include $(BUILD_SHARED_LIBRARY)
diff --git a/hardware_properties/hardware_properties.c b/hardware_properties/hardware_properties.c
new file mode 100644
index 0000000..9ea2d79
--- /dev/null
+++ b/hardware_properties/hardware_properties.c
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LOG_TAG "HardwarePropertiesHAL"
+#include <utils/Log.h>
+
+#include <hardware/hardware.h>
+#include <hardware/hardware_properties.h>
+
+#define MAX_LENGTH 50
+
+#define CPU_USAGE_FILE "/proc/stat"
+#define CPU_NUM 4
+#define TEMP_FILE "/sys/class/thermal/thermal_zone%d/temp"
+#define CPU0_TEMP_NUM 6
+#define CPU_LABEL "CPU %d"
+#define BATTERY_TEMP_NUM 17
+#define BATTERY_LABEL "BATTERY"
+#define GPU_TEMP_NUM 11
+#define GPU_LABEL "GPU"
+
+static ssize_t get_cpu_temperatures(struct hardware_properties_module *module,
+ float **temps) {
+ FILE *file;
+ char file_name[MAX_LENGTH];
+ int cpu;
+ float temp;
+ size_t size = 0;
+
+ *temps = malloc(CPU_NUM * sizeof(float));
+
+ for (cpu = 0; cpu < CPU_NUM; cpu++) {
+ sprintf(file_name, TEMP_FILE, cpu + CPU0_TEMP_NUM);
+ file = fopen(file_name, "r");
+ if (file == NULL) {
+ ALOGE("%s: failed to open: %s", __func__, strerror(errno));
+ free(*temps);
+ *temps = NULL;
+ return -1;
+ }
+ if (1 != fscanf(file, "%f", &temp)) {
+ fclose(file);
+ free(*temps);
+ *temps = NULL;
+ ALOGE("%s: failed to read a float: %s", __func__, strerror(errno));
+ return -1;
+ }
+ // tsens_tz_sensor[5-8]: temperature in Celsius.
+ (*temps)[size] = temp;
+ size++;
+ fclose(file);
+ }
+ return size;
+}
+
+static ssize_t get_battery_temperatures(
+ struct hardware_properties_module *module, float **temps) {
+ FILE *file;
+ char file_name[MAX_LENGTH];
+ float temp;
+
+ *temps = malloc(sizeof(float));
+
+ sprintf(file_name, TEMP_FILE, BATTERY_TEMP_NUM);
+ file = fopen(file_name, "r");
+
+ if (file == NULL) {
+ ALOGE("%s: failed to open: %s", __func__, strerror(errno));
+ free(*temps);
+ *temps = NULL;
+ return -1;
+ }
+
+ if (1 != fscanf(file, "%f", &temp)) {
+ fclose(file);
+ free(*temps);
+ *temps = NULL;
+ ALOGE("%s: failed to read a float: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ // hwmon sensor: battery: temperature in millidegrees Celsius.
+ (*temps)[0] = temp / 1000;
+ fclose(file);
+ return 1;
+}
+
+static ssize_t get_gpu_temperatures(struct hardware_properties_module *module,
+ float **temps) {
+ FILE *file;
+ char file_name[MAX_LENGTH];
+ float temp;
+
+ *temps = malloc(sizeof(float));
+
+ sprintf(file_name, TEMP_FILE, GPU_TEMP_NUM);
+ file = fopen(file_name, "r");
+
+ if (file == NULL) {
+ ALOGE("%s: failed to open: %s", __func__, strerror(errno));
+ free(*temps);
+ *temps = NULL;
+ return -1;
+ }
+
+ if (1 != fscanf(file, "%f", &temp)) {
+ fclose(file);
+ free(*temps);
+ *temps = NULL;
+ ALOGE("%s: failed to read a float: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ // tsens_tz_sensor11: temperature in Celsius.
+ (*temps)[0] = temp;
+ fclose(file);
+ return 1;
+}
+
+static ssize_t get_cpu_usages(struct hardware_properties_module *module,
+ int64_t **active_times,
+ int64_t **total_times) {
+ int vals, cpu_num;
+ ssize_t read;
+ uint64_t user, nice, system, idle, active, total;
+ char *line = NULL;
+ size_t len = 0;
+ size_t size = 0;
+ FILE *file = fopen(CPU_USAGE_FILE, "r");
+
+ if (file == NULL) {
+ ALOGE("%s: failed to open: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ *active_times = malloc(CPU_NUM * sizeof(int64_t));
+ *total_times = malloc(CPU_NUM * sizeof(int64_t));
+
+ 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);
+
+ if (vals != 5 || size == CPU_NUM) {
+ if (vals != 5) {
+ ALOGE("%s: failed to read CPU information from file: %s",
+ __func__, strerror(errno));
+ } else {
+ ALOGE("/proc/stat file has incorrect format.");
+ }
+ fclose(file);
+ free(line);
+ free(*active_times);
+ free(*total_times);
+ *active_times = NULL;
+ *total_times = NULL;
+ line = NULL;
+ len = 0;
+ return -1;
+ }
+
+ active = user + nice + system;
+ total = active + idle;
+ (*active_times)[size] = active;
+ (*total_times)[size] = total;
+
+ size++;
+
+ free(line);
+ line = NULL;
+ len = 0;
+ }
+
+ if (size != CPU_NUM) {
+ ALOGE("/proc/stat file has incorrect format.");
+ fclose(file);
+ free(*active_times);
+ *active_times = NULL;
+ free(*total_times);
+ *total_times = NULL;
+ return -1;
+ }
+
+ fclose(file);
+ return size;
+}
+
+static struct hw_module_methods_t hardware_properties_module_methods = {
+ .open = NULL,
+};
+
+struct hardware_properties_module HAL_MODULE_INFO_SYM = {
+ .common = {
+ .tag = HARDWARE_MODULE_TAG,
+ .module_api_version
+ = HARDWARE_PROPERTIES_HARDWARE_MODULE_API_VERSION_0_1,
+ .hal_api_version = HARDWARE_HAL_API_VERSION,
+ .id = HARDWARE_PROPERTIES_HARDWARE_MODULE_ID,
+ .name = "Shamu Hardware Properties HAL",
+ .author = "The Android Open Source Project",
+ .methods = &hardware_properties_module_methods,
+ },
+ .getCpuTemperatures = get_cpu_temperatures,
+ .getGpuTemperatures = get_gpu_temperatures,
+ .getBatteryTemperatures = get_battery_temperatures,
+ .getCpuUsages = get_cpu_usages,
+};
