320 lines
14 KiB
C
320 lines
14 KiB
C
/*
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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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 the copyright holder 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_LPSPI_EDMA_H_
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#define _FSL_LPSPI_EDMA_H_
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#include "fsl_lpspi.h"
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#include "fsl_edma.h"
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/*!
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* @addtogroup lpspi_edma_driver
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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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/*!
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* @brief Forward declaration of the _lpspi_master_edma_handle typedefs.
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*/
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typedef struct _lpspi_master_edma_handle lpspi_master_edma_handle_t;
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/*!
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* @brief Forward declaration of the _lpspi_slave_edma_handle typedefs.
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*/
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typedef struct _lpspi_slave_edma_handle lpspi_slave_edma_handle_t;
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/*!
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* @brief Completion callback function pointer type.
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*
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* @param base LPSPI peripheral base address.
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* @param handle Pointer to the handle for the LPSPI master.
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* @param status Success or error code describing whether the transfer completed.
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* @param userData Arbitrary pointer-dataSized value passed from the application.
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*/
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typedef void (*lpspi_master_edma_transfer_callback_t)(LPSPI_Type *base,
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lpspi_master_edma_handle_t *handle,
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status_t status,
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void *userData);
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/*!
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* @brief Completion callback function pointer type.
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*
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* @param base LPSPI peripheral base address.
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* @param handle Pointer to the handle for the LPSPI slave.
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* @param status Success or error code describing whether the transfer completed.
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* @param userData Arbitrary pointer-dataSized value passed from the application.
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*/
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typedef void (*lpspi_slave_edma_transfer_callback_t)(LPSPI_Type *base,
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lpspi_slave_edma_handle_t *handle,
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status_t status,
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void *userData);
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/*! @brief LPSPI master eDMA transfer handle structure used for transactional API. */
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struct _lpspi_master_edma_handle
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{
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volatile bool isPcsContinuous; /*!< Is PCS continuous in transfer. */
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volatile bool isByteSwap; /*!< A flag that whether should byte swap. */
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volatile uint8_t fifoSize; /*!< FIFO dataSize. */
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volatile uint8_t rxWatermark; /*!< Rx watermark. */
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volatile uint8_t bytesEachWrite; /*!< Bytes for each write TDR . */
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volatile uint8_t bytesEachRead; /*!< Bytes for each read RDR . */
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volatile uint8_t bytesLastRead; /*!< Bytes for last read RDR . */
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volatile uint8_t isThereExtraRxBytes; /*!< Is there extra RX byte. */
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uint8_t *volatile txData; /*!< Send buffer. */
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uint8_t *volatile rxData; /*!< Receive buffer. */
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volatile size_t txRemainingByteCount; /*!< Number of bytes remaining to send.*/
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volatile size_t rxRemainingByteCount; /*!< Number of bytes remaining to receive.*/
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volatile uint32_t writeRegRemainingTimes; /*!< Write TDR register remaining times. */
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volatile uint32_t readRegRemainingTimes; /*!< Read RDR register remaining times. */
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uint32_t totalByteCount; /*!< Number of transfer bytes*/
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uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/
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uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/
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uint32_t transmitCommand; /*!< Used to write TCR for DMA purpose.*/
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volatile uint8_t state; /*!< LPSPI transfer state , _lpspi_transfer_state.*/
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uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
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lpspi_master_edma_transfer_callback_t callback; /*!< Completion callback. */
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void *userData; /*!< Callback user data. */
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edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/
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edma_handle_t *edmaTxDataToTxRegHandle; /*!<edma_handle_t handle point used for TxData to TxReg buff*/
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edma_tcd_t lpspiSoftwareTCD[3]; /*!<SoftwareTCD , internal used*/
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};
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/*! @brief LPSPI slave eDMA transfer handle structure used for transactional API.*/
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struct _lpspi_slave_edma_handle
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{
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volatile bool isByteSwap; /*!< A flag that whether should byte swap. */
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volatile uint8_t fifoSize; /*!< FIFO dataSize. */
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volatile uint8_t rxWatermark; /*!< Rx watermark. */
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volatile uint8_t bytesEachWrite; /*!< Bytes for each write TDR . */
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volatile uint8_t bytesEachRead; /*!< Bytes for each read RDR . */
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volatile uint8_t bytesLastRead; /*!< Bytes for last read RDR . */
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volatile uint8_t isThereExtraRxBytes; /*!< Is there extra RX byte. */
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uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
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uint8_t *volatile txData; /*!< Send buffer. */
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uint8_t *volatile rxData; /*!< Receive buffer. */
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volatile size_t txRemainingByteCount; /*!< Number of bytes remaining to send.*/
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volatile size_t rxRemainingByteCount; /*!< Number of bytes remaining to receive.*/
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volatile uint32_t writeRegRemainingTimes; /*!< Write TDR register remaining times . */
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volatile uint32_t readRegRemainingTimes; /*!< Read RDR register remaining times . */
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uint32_t totalByteCount; /*!< Number of transfer bytes*/
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uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/
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uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/
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volatile uint8_t state; /*!< LPSPI transfer state.*/
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uint32_t errorCount; /*!< Error count for slave transfer.*/
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lpspi_slave_edma_transfer_callback_t callback; /*!< Completion callback. */
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void *userData; /*!< Callback user data. */
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edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/
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edma_handle_t *edmaTxDataToTxRegHandle; /*!<edma_handle_t handle point used for TxData to TxReg*/
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edma_tcd_t lpspiSoftwareTCD[2]; /*!<SoftwareTCD , internal used*/
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};
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/***********************************************************************************************************************
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* API
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**********************************************************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif /*_cplusplus*/
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/*Transactional APIs*/
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/*!
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* @brief Initializes the LPSPI master eDMA handle.
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*
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* This function initializes the LPSPI eDMA handle which can be used for other LPSPI transactional APIs. Usually, for a
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* specified LPSPI instance, call this API once to get the initialized handle.
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*
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* Note that the LPSPI eDMA has a separated (Rx and Rx as two sources) or shared (Rx and Tx are the same source) DMA
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* request source.
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* (1) For a separated DMA request source, enable and set the Rx DMAMUX source for edmaRxRegToRxDataHandle and
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* Tx DMAMUX source for edmaIntermediaryToTxRegHandle.
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* (2) For a shared DMA request source, enable and set the Rx/Rx DMAMUX source for edmaRxRegToRxDataHandle.
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*
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* @param base LPSPI peripheral base address.
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* @param handle LPSPI handle pointer to lpspi_master_edma_handle_t.
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* @param callback LPSPI callback.
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* @param userData callback function parameter.
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* @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t.
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* @param edmaTxDataToTxRegHandle edmaTxDataToTxRegHandle pointer to edma_handle_t.
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*/
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void LPSPI_MasterTransferCreateHandleEDMA(LPSPI_Type *base,
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lpspi_master_edma_handle_t *handle,
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lpspi_master_edma_transfer_callback_t callback,
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void *userData,
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edma_handle_t *edmaRxRegToRxDataHandle,
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edma_handle_t *edmaTxDataToTxRegHandle);
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/*!
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* @brief LPSPI master transfer data using eDMA.
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*
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* This function transfers data using eDMA. This is a non-blocking function, which returns right away. When all data
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* is transferred, the callback function is called.
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*
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* Note:
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* The transfer data size should be an integer multiple of bytesPerFrame if bytesPerFrame is less than or equal to 4.
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* For bytesPerFrame greater than 4:
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* The transfer data size should be equal to bytesPerFrame if the bytesPerFrame is not an integer multiple of 4.
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* Otherwise, the transfer data size can be an integer multiple of bytesPerFrame.
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*
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* @param base LPSPI peripheral base address.
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* @param handle pointer to lpspi_master_edma_handle_t structure which stores the transfer state.
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* @param transfer pointer to lpspi_transfer_t structure.
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* @return status of status_t.
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*/
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status_t LPSPI_MasterTransferEDMA(LPSPI_Type *base, lpspi_master_edma_handle_t *handle, lpspi_transfer_t *transfer);
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/*!
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* @brief LPSPI master aborts a transfer which is using eDMA.
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*
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* This function aborts a transfer which is using eDMA.
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*
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* @param base LPSPI peripheral base address.
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* @param handle pointer to lpspi_master_edma_handle_t structure which stores the transfer state.
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*/
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void LPSPI_MasterTransferAbortEDMA(LPSPI_Type *base, lpspi_master_edma_handle_t *handle);
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/*!
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* @brief Gets the master eDMA transfer remaining bytes.
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*
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* This function gets the master eDMA transfer remaining bytes.
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*
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* @param base LPSPI peripheral base address.
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* @param handle pointer to lpspi_master_edma_handle_t structure which stores the transfer state.
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* @param count Number of bytes transferred so far by the EDMA transaction.
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* @return status of status_t.
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*/
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status_t LPSPI_MasterTransferGetCountEDMA(LPSPI_Type *base, lpspi_master_edma_handle_t *handle, size_t *count);
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/*!
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* @brief Initializes the LPSPI slave eDMA handle.
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*
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* This function initializes the LPSPI eDMA handle which can be used for other LPSPI transactional APIs. Usually, for a
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* specified LPSPI instance, call this API once to get the initialized handle.
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*
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* Note that LPSPI eDMA has a separated (Rx and Tx as two sources) or shared (Rx and Tx as the same source) DMA request
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* source.
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*
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* (1) For a separated DMA request source, enable and set the Rx DMAMUX source for edmaRxRegToRxDataHandle and
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* Tx DMAMUX source for edmaTxDataToTxRegHandle.
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* (2) For a shared DMA request source, enable and set the Rx/Rx DMAMUX source for edmaRxRegToRxDataHandle .
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*
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* @param base LPSPI peripheral base address.
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* @param handle LPSPI handle pointer to lpspi_slave_edma_handle_t.
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* @param callback LPSPI callback.
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* @param userData callback function parameter.
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* @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t.
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* @param edmaTxDataToTxRegHandle edmaTxDataToTxRegHandle pointer to edma_handle_t.
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*/
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void LPSPI_SlaveTransferCreateHandleEDMA(LPSPI_Type *base,
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lpspi_slave_edma_handle_t *handle,
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lpspi_slave_edma_transfer_callback_t callback,
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void *userData,
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edma_handle_t *edmaRxRegToRxDataHandle,
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edma_handle_t *edmaTxDataToTxRegHandle);
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/*!
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* @brief LPSPI slave transfers data using eDMA.
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*
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* This function transfers data using eDMA. This is a non-blocking function, which return right away. When all data
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* is transferred, the callback function is called.
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*
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* Note:
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* The transfer data size should be an integer multiple of bytesPerFrame if bytesPerFrame is less than or equal to 4.
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* For bytesPerFrame greater than 4:
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* The transfer data size should be equal to bytesPerFrame if the bytesPerFrame is not an integer multiple of 4.
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* Otherwise, the transfer data size can be an integer multiple of bytesPerFrame.
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*
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* @param base LPSPI peripheral base address.
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* @param handle pointer to lpspi_slave_edma_handle_t structure which stores the transfer state.
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* @param transfer pointer to lpspi_transfer_t structure.
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* @return status of status_t.
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*/
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status_t LPSPI_SlaveTransferEDMA(LPSPI_Type *base, lpspi_slave_edma_handle_t *handle, lpspi_transfer_t *transfer);
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/*!
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* @brief LPSPI slave aborts a transfer which is using eDMA.
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*
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* This function aborts a transfer which is using eDMA.
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*
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* @param base LPSPI peripheral base address.
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* @param handle pointer to lpspi_slave_edma_handle_t structure which stores the transfer state.
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*/
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void LPSPI_SlaveTransferAbortEDMA(LPSPI_Type *base, lpspi_slave_edma_handle_t *handle);
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/*!
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* @brief Gets the slave eDMA transfer remaining bytes.
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*
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* This function gets the slave eDMA transfer remaining bytes.
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*
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* @param base LPSPI peripheral base address.
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* @param handle pointer to lpspi_slave_edma_handle_t structure which stores the transfer state.
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* @param count Number of bytes transferred so far by the eDMA transaction.
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* @return status of status_t.
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*/
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status_t LPSPI_SlaveTransferGetCountEDMA(LPSPI_Type *base, lpspi_slave_edma_handle_t *handle, size_t *count);
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#if defined(__cplusplus)
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}
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#endif /*_cplusplus*/
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/*!
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*@}
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*/
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#endif /*_FSL_LPSPI_EDMA_H_*/
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