149 lines
5.9 KiB
C
149 lines
5.9 KiB
C
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/*
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* Copyright (c) 2016, Freescale Semiconductor, Inc.
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* Copyright 2016-2020 NXP
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef _FSL_FLEXSPI_EDMA_H_
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#define _FSL_FLEXSPI_EDMA_H_
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#include "fsl_flexspi.h"
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#include "fsl_dmamux.h"
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#include "fsl_edma.h"
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/*!
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* @addtogroup flexspi_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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/*! @name Driver version */
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/*@{*/
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/*! @brief FLEXSPI EDMA driver version 2.3.2. */
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#define FSL_FLEXSPI_EDMA_DRIVER_VERSION (MAKE_VERSION(2, 3, 2))
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/*@}*/
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typedef struct _flexspi_edma_handle flexspi_edma_handle_t;
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/*! @brief FLEXSPI eDMA transfer callback function for finish and error */
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typedef void (*flexspi_edma_callback_t)(FLEXSPI_Type *base,
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flexspi_edma_handle_t *handle,
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status_t status,
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void *userData);
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/*! @brief eDMA transfer configuration */
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typedef enum _flexspi_edma_ntransfer_size
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{
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kFLEXPSI_EDMAnSize1Bytes = 0x1U, /*!< Source/Destination data transfer size is 1 byte every time */
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kFLEXPSI_EDMAnSize2Bytes = 0x2U, /*!< Source/Destination data transfer size is 2 bytes every time */
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kFLEXPSI_EDMAnSize4Bytes = 0x4U, /*!< Source/Destination data transfer size is 4 bytes every time */
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kFLEXPSI_EDMAnSize8Bytes = 0x8U, /*!< Source/Destination data transfer size is 8 bytes every time */
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kFLEXPSI_EDMAnSize32Bytes = 0x20U, /*!< Source/Destination data transfer size is 32 bytes every time */
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} flexspi_edma_transfer_nsize_t;
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/*! @brief FLEXSPI DMA transfer handle, users should not touch the content of the handle.*/
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struct _flexspi_edma_handle
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{
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edma_handle_t *txDmaHandle; /*!< eDMA handler for FLEXSPI Tx. */
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edma_handle_t *rxDmaHandle; /*!< eDMA handler for FLEXSPI Rx. */
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size_t transferSize; /*!< Bytes need to transfer. */
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flexspi_edma_transfer_nsize_t nsize; /*!< eDMA SSIZE/DSIZE in each transfer. */
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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 FLEXSPI eDMA transfer. */
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flexspi_edma_callback_t completionCallback; /*!< A callback function called after the eDMA transfer is finished. */
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void *userData; /*!< User callback parameter */
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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 FLEXSPI eDMA Transactional
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* @{
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*/
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/*!
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* @brief Initializes the FLEXSPI handle for transfer which is used in transactional functions and set the callback.
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*
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* @param base FLEXSPI peripheral base address
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* @param handle Pointer to flexspi_edma_handle_t structure
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* @param callback FLEXSPI callback, NULL means no callback.
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* @param userData User callback function data.
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* @param txDmaHandle User requested DMA handle for TX DMA transfer.
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* @param rxDmaHandle User requested DMA handle for RX DMA transfer.
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*/
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void FLEXSPI_TransferCreateHandleEDMA(FLEXSPI_Type *base,
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flexspi_edma_handle_t *handle,
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flexspi_edma_callback_t callback,
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void *userData,
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edma_handle_t *txDmaHandle,
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edma_handle_t *rxDmaHandle);
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/*!
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* @brief Update FLEXSPI EDMA transfer source data transfer size(SSIZE) and destination data transfer size(DSIZE).
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*
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* @param base FLEXSPI peripheral base address
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* @param handle Pointer to flexspi_edma_handle_t structure
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* @param nsize FLEXSPI DMA transfer data transfer size(SSIZE/DSIZE), by default the size is
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* kFLEXPSI_EDMAnSize1Bytes(one byte).
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* @see flexspi_edma_transfer_nsize_t .
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*/
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void FLEXSPI_TransferUpdateSizeEDMA(FLEXSPI_Type *base,
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flexspi_edma_handle_t *handle,
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flexspi_edma_transfer_nsize_t nsize);
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/*!
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* @brief Transfers FLEXSPI data using an eDMA non-blocking method.
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*
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* This function writes/receives data to/from the FLEXSPI transmit/receive FIFO. This function is non-blocking.
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* @param base FLEXSPI peripheral base address.
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* @param handle Pointer to flexspi_edma_handle_t structure
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* @param xfer FLEXSPI transfer structure.
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* @retval kStatus_FLEXSPI_Busy FLEXSPI is busy transfer.
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* @retval kStatus_InvalidArgument The watermark configuration is invalid, the watermark should be power of
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2 to do successfully EDMA transfer.
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* @retval kStatus_Success FLEXSPI successfully start edma transfer.
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*/
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status_t FLEXSPI_TransferEDMA(FLEXSPI_Type *base, flexspi_edma_handle_t *handle, flexspi_transfer_t *xfer);
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/*!
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* @brief Aborts the transfer data using eDMA.
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*
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* This function aborts the transfer data using eDMA.
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*
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* @param base FLEXSPI peripheral base address.
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* @param handle Pointer to flexspi_edma_handle_t structure
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*/
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void FLEXSPI_TransferAbortEDMA(FLEXSPI_Type *base, flexspi_edma_handle_t *handle);
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/*!
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* @brief Gets the transferred counts of transfer.
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*
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* @param base FLEXSPI peripheral base address.
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* @param handle Pointer to flexspi_edma_handle_t structure.
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* @param count Bytes transfer.
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* @retval kStatus_Success Succeed get the transfer count.
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* @retval kStatus_NoTransferInProgress There is not a non-blocking transaction currently in progress.
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*/
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status_t FLEXSPI_TransferGetTransferCountEDMA(FLEXSPI_Type *base, flexspi_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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#endif /* _FSL_FLEXSPI_EDMA_H_ */
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