thermal-engine: Add thermal client library header

This header can be used to query and change thermal config.

Bug: 30262969
Change-Id: If1dadfd37b52b2892fb8d543069ac06143fd5623

thermal-engine/Android.mk

@@ -0,0 +1,8 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_COPY_HEADERS_TO := thermal-engine
+LOCAL_COPY_HEADERS := ./thermal_client.h
+
+include $(BUILD_COPY_HEADERS)

thermal-engine/thermal_client.h

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2016 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 <cutils/properties.h>
+#ifndef __THERMAL_CLIENT_H__
+#define __THERMAL_CLIENT_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MAX_ACTIONS  (32)
+
+/* Enum for supported fields */
+enum supported_fields {
+	UNKNOWN_FIELD = 0x0,
+	DISABLE_FIELD = 0x1,
+	SAMPLING_FIELD = 0x2,
+	THRESHOLDS_FIELD = 0x4,
+	SET_POINT_FIELD = THRESHOLDS_FIELD,
+	THRESHOLDS_CLR_FIELD = 0x8,
+	SET_POINT_CLR_FIELD = THRESHOLDS_CLR_FIELD,
+	ACTION_INFO_FIELD = 0x10,
+	SUPPORTED_FIELD_MAX = 0x20,
+};
+
+enum field_data_type {
+	FIELD_INT = 0,
+	FIELD_STR,
+	FIELD_INT_ARR,
+	FIELD_ARR_STR,
+	FIELD_ARR_INT_ARR,
+	FIELD_MAX
+};
+
+struct action_info_data {
+	int info[MAX_ACTIONS];
+	uint32_t num_actions;
+};
+
+struct field_data {
+	char *field_name;
+	enum field_data_type data_type;
+	uint32_t num_data;
+	void *data;
+};
+
+struct config_instance {
+	char *cfg_desc;
+	char *algo_type;
+	unsigned int fields_mask;  /* mask set by client to request to adjust supported fields */
+	uint32_t num_fields;
+	struct field_data *fields;
+};
+
+int thermal_client_config_query(char *algo_type, struct config_instance **configs);
+void thermal_client_config_cleanup(struct config_instance *configs, unsigned int config_size);
+int thermal_client_config_set(struct config_instance *configs, unsigned int config_size);
+
+int thermal_client_register_callback(char *client_name, int (*callback)(int , void *, void *), void *data);
+int thermal_client_request(char *client_name, int req_data);
+void thermal_client_unregister_callback(int client_cb_handle);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __THERMAL_CLIENT_H__ */