/*
 * Copyright (c) 2021 Samsung Electronics Co., Ltd All Rights Reserved
 *
 * 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 <hal/hal-common.h>

#include "common.h"
#include "hal-thermal-interface.h"

static hal_backend_thermal_funcs *hal_thermal_funcs = NULL;

int hal_device_thermal_get_backend(void)
{
	int ret;

	if (hal_thermal_funcs)
		return 0;

	ret = hal_common_get_backend(HAL_MODULE_DEVICE_THERMAL, (void **)&hal_thermal_funcs);
	if (ret < 0) {
		 _E("Failed to get thermal backend");
		return -EINVAL;
	}

	return 0;
}

int hal_device_thermal_put_backend(void)
{
	if (!hal_thermal_funcs)
		return 0;

	hal_common_put_backend(HAL_MODULE_DEVICE_THERMAL, (void *)hal_thermal_funcs);
	hal_thermal_funcs = NULL;

	return 0;
}

int hal_device_thermal_get_info(hal_device_thermal_e type, struct thermal_info *info)
{
	int ret;

	if (!hal_thermal_funcs) {
		if ((ret = hal_device_thermal_get_backend()) < 0)
			return ret;
	}

	if (!hal_thermal_funcs ||
	    !hal_thermal_funcs->get_info)
		return -ENODEV;

	return hal_thermal_funcs->get_info(type, info);
}

int hal_device_thermal_register_changed_event(ThermalUpdated updated_cb, void *data)
{
	int ret;

	if (!hal_thermal_funcs) {
		if ((ret = hal_device_thermal_get_backend()) < 0)
			return ret;
	}

	if (!hal_thermal_funcs ||
	    !hal_thermal_funcs->register_changed_event)
		return -ENODEV;

	return hal_thermal_funcs->register_changed_event(updated_cb, data);
}

int hal_device_thermal_unregister_changed_event(ThermalUpdated updated_cb)
{
	int ret;

	if (!hal_thermal_funcs) {
		if ((ret = hal_device_thermal_get_backend()) < 0)
			return ret;
	}

	if (!hal_thermal_funcs ||
	    !hal_thermal_funcs->unregister_changed_event)
		return -ENODEV;

	return hal_thermal_funcs->unregister_changed_event(updated_cb);
}