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 * Copyright (c) 2018 - 2021, Nordic Semiconductor ASA
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 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
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 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
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 * 4. This software, with or without modification, must only be used with a
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#include "sdk_common.h"
#if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG)

#include "nrf.h"
#include "nrf_crypto_init.h"
#include "nrf_crypto_rng.h"


static ret_code_t nrf_hw_backend_init(void)
{
#if defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 1)

    uint32_t ret_val;
    ret_val = nrf_crypto_rng_init(NULL, NULL);
    return ret_val;

#elif defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 0)

    return NRF_SUCCESS;

#else

    #warning NRF_CRYPTO_RNG_AUTO_INIT_ENABLED define not found in sdk_config.h (Is the sdk_config.h valid?).

#endif // NRF_CRYPTO_RNG_AUTO_INIT_ENABLED
}


static ret_code_t nrf_hw_backend_uninit(void)
{
#if defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 1)

    uint32_t ret_val;
    ret_val = nrf_crypto_rng_uninit();
    return ret_val;

#elif defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 0)

    return NRF_SUCCESS;

#else

    #warning NRF_CRYPTO_RNG_AUTO_INIT_ENABLED define not found in sdk_config.h (Is the sdk_config.h valid?).

#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_RNG_AUTO_INIT)
}


CRYPTO_BACKEND_REGISTER(nrf_crypto_backend_info_t const nrf_hw_backend) =
{
    .init_fn    = nrf_hw_backend_init,
    .uninit_fn  = nrf_hw_backend_uninit
};

#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_NRF_HW_RNG)
