Hardware Properties HAL: header file and default implementation
Added methods on Hardware Properties HAL:
getCpuTemperatures, getGpuTemperatures, getBatteryTemperautres,
getCpuUsages, getFanSpeeds and default/legacy empty implementations
(return empty lists by default).
Bug: 22407109
Change-Id: I3e0e74527cf759cc717ab03ea8e7184da5bea1e6
diff --git a/modules/hardware_properties/Android.mk b/modules/hardware_properties/Android.mk
new file mode 100644
index 0000000..41c02ea
--- /dev/null
+++ b/modules/hardware_properties/Android.mk
@@ -0,0 +1,25 @@
+# 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.
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := hardware_properties.default
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SRC_FILES := hardware_properties.c
+LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/modules/hardware_properties/hardware_properties.c b/modules/hardware_properties/hardware_properties.c
new file mode 100644
index 0000000..d8bf037
--- /dev/null
+++ b/modules/hardware_properties/hardware_properties.c
@@ -0,0 +1,65 @@
+/*
+ * 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 <hardware/hardware.h>
+#include <hardware/hardware_properties.h>
+
+static ssize_t get_device_temperatures(
+ struct hardware_properties_module *module, float **temps) {
+ *temps = NULL;
+ errno = ENOSYS;
+ ALOGE("getDeviceTemperatures: %s", strerror(errno));
+ return -1;
+}
+
+static ssize_t get_cpu_usages(struct hardware_properties_module *module,
+ int64_t **active_times, int64_t **total_times) {
+ *active_times = NULL;
+ *total_times = NULL;
+ errno = ENOSYS;
+ ALOGE("getCpuUsages: %s", strerror(errno));
+ return -1;
+}
+
+static ssize_t get_fan_speeds(struct hardware_properties_module *module,
+ float **fan_speeds) {
+ *fan_speeds = NULL;
+ errno = ENOSYS;
+ ALOGE("getFanSpeeds: %s", strerror(errno));
+ return -1;
+}
+
+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 = "Default Hardware Properties HAL",
+ .author = "The Android Open Source Project",
+ .methods = &hardware_properties_module_methods,
+ },
+
+ .getCpuTemperatures = get_device_temperatures,
+ .getGpuTemperatures = get_device_temperatures,
+ .getBatteryTemperatures = get_device_temperatures,
+ .getCpuUsages = get_cpu_usages,
+ .getFanSpeeds = get_fan_speeds,
+};