/**
 * @file
 * @brief   Trust Protection Unit driver.
 */

/******************************************************************************
 *
 * Copyright (C) 2022-2023 Maxim Integrated Products, Inc. (now owned by 
 * Analog Devices, Inc.),
 * Copyright (C) 2023-2024 Analog Devices, Inc.
 *
 * 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 "mxc_device.h"
#include "mxc_errors.h"
#include "mxc_assert.h"
#include "mxc_sys.h"
#include "trng_revb.h"
#include "trng.h"

/* ************************************************************************* */
/* Global Control/Configuration functions                                    */
/* ************************************************************************* */

/********************************************************/

int MXC_TRNG_Init(void)
{
#ifndef MSDK_NO_GPIO_CLK_INIT
    MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_TRNG);
#endif

    MXC_TRNG_RevB_Init();

    return E_NO_ERROR;
}

void MXC_TRNG_EnableInt(void)
{
    MXC_TRNG_RevB_EnableInt((mxc_trng_revb_regs_t *)MXC_TRNG);
}

void MXC_TRNG_DisableInt(void)
{
    MXC_TRNG_RevB_DisableInt((mxc_trng_revb_regs_t *)MXC_TRNG);
}

int MXC_TRNG_Shutdown(void)
{
    int error = MXC_TRNG_RevB_Shutdown();

    MXC_SYS_ClockDisable(MXC_SYS_PERIPH_CLOCK_TRNG);

    return error;
}

void MXC_TRNG_Handler(void)
{
    MXC_TRNG_RevB_Handler((mxc_trng_revb_regs_t *)MXC_TRNG);
}

/* ************************************************************************* */
/* True Random Number Generator (TRNG) functions                             */
/* ************************************************************************* */

int MXC_TRNG_RandomInt(void)
{
    return MXC_TRNG_RevB_RandomInt((mxc_trng_revb_regs_t *)MXC_TRNG);
}

int MXC_TRNG_Random(uint8_t *data, uint32_t len)
{
    return MXC_TRNG_RevB_Random(data, len);
}

void MXC_TRNG_RandomAsync(uint8_t *data, uint32_t len, mxc_trng_complete_t callback)
{
    MXC_TRNG_RevB_RandomAsync((mxc_trng_revb_regs_t *)MXC_TRNG, data, len, callback);
}

int MXC_TRNG_HealthTest(void)
{
    if ((MXC_SYS_GetRevision() & 0xF0) == 0xA0) { // ME17 Rev. A does not support health tests.
        return E_NOT_SUPPORTED;
    }

    return MXC_TRNG_RevB_HealthTest((mxc_trng_revb_regs_t *)MXC_TRNG);
}