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/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* Copyright 2016-2020 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _FSL_FLEXIO_SPI_EDMA_H_
#define _FSL_FLEXIO_SPI_EDMA_H_
#include "fsl_flexio_spi.h"
#include "fsl_edma.h"
/*!
* @addtogroup flexio_edma_spi
* @{
*/
/*******************************************************************************
* Definitions
******************************************************************************/
/*! @name Driver version */
/*@{*/
/*! @brief FlexIO SPI EDMA driver version 2.2.0. */
#define FSL_FLEXIO_SPI_EDMA_DRIVER_VERSION (MAKE_VERSION(2, 2, 0))
/*@}*/
/*! @brief typedef for flexio_spi_master_edma_handle_t in advance. */
typedef struct _flexio_spi_master_edma_handle flexio_spi_master_edma_handle_t;
/*! @brief Slave handle is the same with master handle. */
typedef flexio_spi_master_edma_handle_t flexio_spi_slave_edma_handle_t;
/*! @brief FlexIO SPI master callback for finished transmit */
typedef void (*flexio_spi_master_edma_transfer_callback_t)(FLEXIO_SPI_Type *base,
flexio_spi_master_edma_handle_t *handle,
status_t status,
void *userData);
/*! @brief FlexIO SPI slave callback for finished transmit */
typedef void (*flexio_spi_slave_edma_transfer_callback_t)(FLEXIO_SPI_Type *base,
flexio_spi_slave_edma_handle_t *handle,
status_t status,
void *userData);
/*! @brief FlexIO SPI eDMA transfer handle, users should not touch the content of the handle.*/
struct _flexio_spi_master_edma_handle
{
size_t transferSize; /*!< Total bytes to be transferred. */
uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
bool txInProgress; /*!< Send transfer in progress */
bool rxInProgress; /*!< Receive transfer in progress */
edma_handle_t *txHandle; /*!< DMA handler for SPI send */
edma_handle_t *rxHandle; /*!< DMA handler for SPI receive */
flexio_spi_master_edma_transfer_callback_t callback; /*!< Callback for SPI DMA transfer */
void *userData; /*!< User Data for SPI DMA callback */
};
/*******************************************************************************
* APIs
******************************************************************************/
#if defined(__cplusplus)
extern "C" {
#endif
/*!
* @name eDMA Transactional
* @{
*/
/*!
* @brief Initializes the FlexIO SPI master eDMA handle.
*
* This function initializes the FlexIO SPI master eDMA handle which can be used for other FlexIO SPI master
* transactional
* APIs.
* For a specified FlexIO SPI instance, call this API once to get the initialized handle.
*
* @param base Pointer to FLEXIO_SPI_Type structure.
* @param handle Pointer to flexio_spi_master_edma_handle_t structure to store the transfer state.
* @param callback SPI callback, NULL means no callback.
* @param userData callback function parameter.
* @param txHandle User requested eDMA handle for FlexIO SPI RX eDMA transfer.
* @param rxHandle User requested eDMA handle for FlexIO SPI TX eDMA transfer.
* @retval kStatus_Success Successfully create the handle.
* @retval kStatus_OutOfRange The FlexIO SPI eDMA type/handle table out of range.
*/
status_t FLEXIO_SPI_MasterTransferCreateHandleEDMA(FLEXIO_SPI_Type *base,
flexio_spi_master_edma_handle_t *handle,
flexio_spi_master_edma_transfer_callback_t callback,
void *userData,
edma_handle_t *txHandle,
edma_handle_t *rxHandle);
/*!
* @brief Performs a non-blocking FlexIO SPI transfer using eDMA.
*
* @note This interface returns immediately after transfer initiates. Call
* FLEXIO_SPI_MasterGetTransferCountEDMA to poll the transfer status and check
* whether the FlexIO SPI transfer is finished.
*
* @param base Pointer to FLEXIO_SPI_Type structure.
* @param handle Pointer to flexio_spi_master_edma_handle_t structure to store the transfer state.
* @param xfer Pointer to FlexIO SPI transfer structure.
* @retval kStatus_Success Successfully start a transfer.
* @retval kStatus_InvalidArgument Input argument is invalid.
* @retval kStatus_FLEXIO_SPI_Busy FlexIO SPI is not idle, is running another transfer.
*/
status_t FLEXIO_SPI_MasterTransferEDMA(FLEXIO_SPI_Type *base,
flexio_spi_master_edma_handle_t *handle,
flexio_spi_transfer_t *xfer);
/*!
* @brief Aborts a FlexIO SPI transfer using eDMA.
*
* @param base Pointer to FLEXIO_SPI_Type structure.
* @param handle FlexIO SPI eDMA handle pointer.
*/
void FLEXIO_SPI_MasterTransferAbortEDMA(FLEXIO_SPI_Type *base, flexio_spi_master_edma_handle_t *handle);
/*!
* @brief Gets the remaining bytes for FlexIO SPI eDMA transfer.
*
* @param base Pointer to FLEXIO_SPI_Type structure.
* @param handle FlexIO SPI eDMA handle pointer.
* @param count Number of bytes transferred so far by the non-blocking transaction.
*/
status_t FLEXIO_SPI_MasterTransferGetCountEDMA(FLEXIO_SPI_Type *base,
flexio_spi_master_edma_handle_t *handle,
size_t *count);
/*!
* @brief Initializes the FlexIO SPI slave eDMA handle.
*
* This function initializes the FlexIO SPI slave eDMA handle.
*
* @param base Pointer to FLEXIO_SPI_Type structure.
* @param handle Pointer to flexio_spi_slave_edma_handle_t structure to store the transfer state.
* @param callback SPI callback, NULL means no callback.
* @param userData callback function parameter.
* @param txHandle User requested eDMA handle for FlexIO SPI TX eDMA transfer.
* @param rxHandle User requested eDMA handle for FlexIO SPI RX eDMA transfer.
*/
static inline void FLEXIO_SPI_SlaveTransferCreateHandleEDMA(FLEXIO_SPI_Type *base,
flexio_spi_slave_edma_handle_t *handle,
flexio_spi_slave_edma_transfer_callback_t callback,
void *userData,
edma_handle_t *txHandle,
edma_handle_t *rxHandle)
{
(void)FLEXIO_SPI_MasterTransferCreateHandleEDMA(base, handle, callback, userData, txHandle, rxHandle);
}
/*!
* @brief Performs a non-blocking FlexIO SPI transfer using eDMA.
*
* @note This interface returns immediately after transfer initiates. Call
* FLEXIO_SPI_SlaveGetTransferCountEDMA to poll the transfer status and
* check whether the FlexIO SPI transfer is finished.
*
* @param base Pointer to FLEXIO_SPI_Type structure.
* @param handle Pointer to flexio_spi_slave_edma_handle_t structure to store the transfer state.
* @param xfer Pointer to FlexIO SPI transfer structure.
* @retval kStatus_Success Successfully start a transfer.
* @retval kStatus_InvalidArgument Input argument is invalid.
* @retval kStatus_FLEXIO_SPI_Busy FlexIO SPI is not idle, is running another transfer.
*/
status_t FLEXIO_SPI_SlaveTransferEDMA(FLEXIO_SPI_Type *base,
flexio_spi_slave_edma_handle_t *handle,
flexio_spi_transfer_t *xfer);
/*!
* @brief Aborts a FlexIO SPI transfer using eDMA.
*
* @param base Pointer to FLEXIO_SPI_Type structure.
* @param handle Pointer to flexio_spi_slave_edma_handle_t structure to store the transfer state.
*/
static inline void FLEXIO_SPI_SlaveTransferAbortEDMA(FLEXIO_SPI_Type *base, flexio_spi_slave_edma_handle_t *handle)
{
FLEXIO_SPI_MasterTransferAbortEDMA(base, handle);
}
/*!
* @brief Gets the remaining bytes to be transferred for FlexIO SPI eDMA.
*
* @param base Pointer to FLEXIO_SPI_Type structure.
* @param handle FlexIO SPI eDMA handle pointer.
* @param count Number of bytes transferred so far by the non-blocking transaction.
*/
static inline status_t FLEXIO_SPI_SlaveTransferGetCountEDMA(FLEXIO_SPI_Type *base,
flexio_spi_slave_edma_handle_t *handle,
size_t *count)
{
return FLEXIO_SPI_MasterTransferGetCountEDMA(base, handle, count);
}
/*! @} */
#if defined(__cplusplus)
}
#endif
/*!
* @}
*/
#endif
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