209 lines
9.0 KiB
C
209 lines
9.0 KiB
C
/*
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* Copyright (c) 2016, Freescale Semiconductor, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _FSL_SPDIF_EDMA_H_
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#define _FSL_SPDIF_EDMA_H_
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#include "fsl_spdif.h"
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#include "fsl_edma.h"
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/*!
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* @addtogroup spdif_edma
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* @{
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*/
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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typedef struct _spdif_edma_handle spdif_edma_handle_t;
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/*! @brief SPDIF eDMA transfer callback function for finish and error */
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typedef void (*spdif_edma_callback_t)(SPDIF_Type *base, spdif_edma_handle_t *handle, status_t status, void *userData);
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/*! @brief SPDIF transfer structure */
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typedef struct _spdif_edma_transfer
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{
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uint8_t *leftData; /*!< Data start address to transfer. */
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uint8_t *rightData; /*!< Data start address to transfer. */
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size_t dataSize; /*!< Transfer size. */
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} spdif_edma_transfer_t;
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/*! @brief SPDIF DMA transfer handle, users should not touch the content of the handle.*/
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struct _spdif_edma_handle
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{
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edma_handle_t *dmaLeftHandle; /*!< DMA handler for SPDIF left channel */
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edma_handle_t *dmaRightHandle; /*!< DMA handler for SPDIF right channel */
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uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
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uint8_t count; /*!< The transfer data count in a DMA request */
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uint32_t state; /*!< Internal state for SPDIF eDMA transfer */
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spdif_edma_callback_t callback; /*!< Callback for users while transfer finish or error occurs */
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void *userData; /*!< User callback parameter */
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edma_tcd_t leftTcd[SPDIF_XFER_QUEUE_SIZE + 1U]; /*!< TCD pool for eDMA transfer. */
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edma_tcd_t rightTcd[SPDIF_XFER_QUEUE_SIZE + 1U]; /*!< TCD pool for eDMA transfer. */
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spdif_edma_transfer_t spdifQueue[SPDIF_XFER_QUEUE_SIZE]; /*!< Transfer queue storing queued transfer. */
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size_t transferSize[SPDIF_XFER_QUEUE_SIZE]; /*!< Data bytes need to transfer, left and right are the same, so use
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one */
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volatile uint8_t queueUser; /*!< Index for user to queue transfer. */
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volatile uint8_t queueDriver; /*!< Index for driver to get the transfer data and size */
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};
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/*******************************************************************************
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* APIs
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******************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/*!
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* @name eDMA Transactional
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* @{
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*/
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/*!
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* @brief Initializes the SPDIF eDMA handle.
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*
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* This function initializes the SPDIF master DMA handle, which can be used for other SPDIF master transactional APIs.
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* Usually, for a specified SPDIF instance, call this API once to get the initialized handle.
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*
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* @param base SPDIF base pointer.
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* @param handle SPDIF eDMA handle pointer.
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* @param base SPDIF peripheral base address.
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* @param callback Pointer to user callback function.
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* @param userData User parameter passed to the callback function.
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* @param dmaLeftHandle eDMA handle pointer for left channel, this handle shall be static allocated by users.
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* @param dmaRightHandle eDMA handle pointer for right channel, this handle shall be static allocated by users.
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*/
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void SPDIF_TransferTxCreateHandleEDMA(SPDIF_Type *base,
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spdif_edma_handle_t *handle,
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spdif_edma_callback_t callback,
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void *userData,
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edma_handle_t *dmaLeftHandle,
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edma_handle_t *dmaRightHandle);
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/*!
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* @brief Initializes the SPDIF Rx eDMA handle.
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*
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* This function initializes the SPDIF slave DMA handle, which can be used for other SPDIF master transactional APIs.
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* Usually, for a specified SPDIF instance, call this API once to get the initialized handle.
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*
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* @param base SPDIF base pointer.
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* @param handle SPDIF eDMA handle pointer.
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* @param base SPDIF peripheral base address.
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* @param callback Pointer to user callback function.
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* @param userData User parameter passed to the callback function.
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* @param dmaLeftHandle eDMA handle pointer for left channel, this handle shall be static allocated by users.
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* @param dmaRightHandle eDMA handle pointer for right channel, this handle shall be static allocated by users.
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*/
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void SPDIF_TransferRxCreateHandleEDMA(SPDIF_Type *base,
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spdif_edma_handle_t *handle,
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spdif_edma_callback_t callback,
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void *userData,
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edma_handle_t *dmaLeftHandle,
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edma_handle_t *dmaRightHandle);
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/*!
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* @brief Performs a non-blocking SPDIF transfer using DMA.
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*
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* @note This interface returns immediately after the transfer initiates. Call
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* SPDIF_GetTransferStatus to poll the transfer status and check whether the SPDIF transfer is finished.
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*
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* @param base SPDIF base pointer.
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* @param handle SPDIF eDMA handle pointer.
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* @param xfer Pointer to the DMA transfer structure.
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* @retval kStatus_Success Start a SPDIF eDMA send successfully.
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* @retval kStatus_InvalidArgument The input argument is invalid.
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* @retval kStatus_TxBusy SPDIF is busy sending data.
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*/
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status_t SPDIF_TransferSendEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle, spdif_edma_transfer_t *xfer);
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/*!
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* @brief Performs a non-blocking SPDIF receive using eDMA.
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*
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* @note This interface returns immediately after the transfer initiates. Call
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* the SPDIF_GetReceiveRemainingBytes to poll the transfer status and check whether the SPDIF transfer is finished.
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*
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* @param base SPDIF base pointer
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* @param handle SPDIF eDMA handle pointer.
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* @param xfer Pointer to DMA transfer structure.
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* @retval kStatus_Success Start a SPDIF eDMA receive successfully.
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* @retval kStatus_InvalidArgument The input argument is invalid.
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* @retval kStatus_RxBusy SPDIF is busy receiving data.
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*/
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status_t SPDIF_TransferReceiveEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle, spdif_edma_transfer_t *xfer);
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/*!
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* @brief Aborts a SPDIF transfer using eDMA.
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*
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* @param base SPDIF base pointer.
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* @param handle SPDIF eDMA handle pointer.
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*/
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void SPDIF_TransferAbortSendEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle);
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/*!
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* @brief Aborts a SPDIF receive using eDMA.
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*
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* @param base SPDIF base pointer
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* @param handle SPDIF eDMA handle pointer.
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*/
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void SPDIF_TransferAbortReceiveEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle);
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/*!
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* @brief Gets byte count sent by SPDIF.
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*
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* @param base SPDIF base pointer.
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* @param handle SPDIF eDMA handle pointer.
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* @param count Bytes count sent by SPDIF.
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* @retval kStatus_Success Succeed get the transfer count.
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* @retval kStatus_NoTransferInProgress There is no non-blocking transaction in progress.
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*/
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status_t SPDIF_TransferGetSendCountEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle, size_t *count);
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/*!
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* @brief Gets byte count received by SPDIF.
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*
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* @param base SPDIF base pointer
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* @param handle SPDIF eDMA handle pointer.
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* @param count Bytes count received by SPDIF.
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* @retval kStatus_Success Succeed get the transfer count.
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* @retval kStatus_NoTransferInProgress There is no non-blocking transaction in progress.
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*/
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status_t SPDIF_TransferGetReceiveCountEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle, size_t *count);
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/*! @} */
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#if defined(__cplusplus)
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}
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#endif
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/*!
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* @}
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*/
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#endif
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