| /* |
| * Copyright (c) 2015, Freescale Semiconductor, Inc. |
| * Copyright 2016-2017 NXP |
| * |
| * Redistribution and use in source and binary forms, with or without modification, |
| * are permitted provided that the following conditions are met: |
| * |
| * o Redistributions of source code must retain the above copyright notice, this list |
| * of conditions and the following disclaimer. |
| * |
| * o Redistributions in binary form must reproduce the above copyright notice, this |
| * list of conditions and the following disclaimer in the documentation and/or |
| * other materials provided with the distribution. |
| * |
| * o Neither the name of the copyright holder nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR |
| * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #ifndef _FSL_LPSPI_EDMA_H_ |
| #define _FSL_LPSPI_EDMA_H_ |
| |
| #include "fsl_lpspi.h" |
| #include "fsl_edma.h" |
| |
| /*! |
| * @addtogroup lpspi_edma_driver |
| * @{ |
| */ |
| |
| /*********************************************************************************************************************** |
| * Definitions |
| **********************************************************************************************************************/ |
| |
| /*! |
| * @brief Forward declaration of the _lpspi_master_edma_handle typedefs. |
| */ |
| typedef struct _lpspi_master_edma_handle lpspi_master_edma_handle_t; |
| |
| /*! |
| * @brief Forward declaration of the _lpspi_slave_edma_handle typedefs. |
| */ |
| typedef struct _lpspi_slave_edma_handle lpspi_slave_edma_handle_t; |
| |
| /*! |
| * @brief Completion callback function pointer type. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle Pointer to the handle for the LPSPI master. |
| * @param status Success or error code describing whether the transfer completed. |
| * @param userData Arbitrary pointer-dataSized value passed from the application. |
| */ |
| typedef void (*lpspi_master_edma_transfer_callback_t)(LPSPI_Type *base, |
| lpspi_master_edma_handle_t *handle, |
| status_t status, |
| void *userData); |
| /*! |
| * @brief Completion callback function pointer type. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle Pointer to the handle for the LPSPI slave. |
| * @param status Success or error code describing whether the transfer completed. |
| * @param userData Arbitrary pointer-dataSized value passed from the application. |
| */ |
| typedef void (*lpspi_slave_edma_transfer_callback_t)(LPSPI_Type *base, |
| lpspi_slave_edma_handle_t *handle, |
| status_t status, |
| void *userData); |
| |
| /*! @brief LPSPI master eDMA transfer handle structure used for transactional API. */ |
| struct _lpspi_master_edma_handle |
| { |
| volatile bool isPcsContinuous; /*!< Is PCS continuous in transfer. */ |
| |
| volatile bool isByteSwap; /*!< A flag that whether should byte swap. */ |
| |
| volatile uint8_t fifoSize; /*!< FIFO dataSize. */ |
| |
| volatile uint8_t rxWatermark; /*!< Rx watermark. */ |
| |
| volatile uint8_t bytesEachWrite; /*!< Bytes for each write TDR . */ |
| volatile uint8_t bytesEachRead; /*!< Bytes for each read RDR . */ |
| |
| volatile uint8_t bytesLastRead; /*!< Bytes for last read RDR . */ |
| volatile uint8_t isThereExtraRxBytes; /*!< Is there extra RX byte. */ |
| |
| uint8_t *volatile txData; /*!< Send buffer. */ |
| uint8_t *volatile rxData; /*!< Receive buffer. */ |
| volatile size_t txRemainingByteCount; /*!< Number of bytes remaining to send.*/ |
| volatile size_t rxRemainingByteCount; /*!< Number of bytes remaining to receive.*/ |
| |
| volatile uint32_t writeRegRemainingTimes; /*!< Write TDR register remaining times. */ |
| volatile uint32_t readRegRemainingTimes; /*!< Read RDR register remaining times. */ |
| |
| uint32_t totalByteCount; /*!< Number of transfer bytes*/ |
| |
| uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/ |
| uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/ |
| |
| uint32_t transmitCommand; /*!< Used to write TCR for DMA purpose.*/ |
| |
| volatile uint8_t state; /*!< LPSPI transfer state , _lpspi_transfer_state.*/ |
| |
| uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */ |
| |
| lpspi_master_edma_transfer_callback_t callback; /*!< Completion callback. */ |
| void *userData; /*!< Callback user data. */ |
| |
| edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/ |
| edma_handle_t *edmaTxDataToTxRegHandle; /*!<edma_handle_t handle point used for TxData to TxReg buff*/ |
| |
| edma_tcd_t lpspiSoftwareTCD[3]; /*!<SoftwareTCD , internal used*/ |
| }; |
| |
| /*! @brief LPSPI slave eDMA transfer handle structure used for transactional API.*/ |
| struct _lpspi_slave_edma_handle |
| { |
| volatile bool isByteSwap; /*!< A flag that whether should byte swap. */ |
| |
| volatile uint8_t fifoSize; /*!< FIFO dataSize. */ |
| |
| volatile uint8_t rxWatermark; /*!< Rx watermark. */ |
| |
| volatile uint8_t bytesEachWrite; /*!< Bytes for each write TDR . */ |
| volatile uint8_t bytesEachRead; /*!< Bytes for each read RDR . */ |
| |
| volatile uint8_t bytesLastRead; /*!< Bytes for last read RDR . */ |
| volatile uint8_t isThereExtraRxBytes; /*!< Is there extra RX byte. */ |
| |
| uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */ |
| |
| uint8_t *volatile txData; /*!< Send buffer. */ |
| uint8_t *volatile rxData; /*!< Receive buffer. */ |
| volatile size_t txRemainingByteCount; /*!< Number of bytes remaining to send.*/ |
| volatile size_t rxRemainingByteCount; /*!< Number of bytes remaining to receive.*/ |
| |
| volatile uint32_t writeRegRemainingTimes; /*!< Write TDR register remaining times . */ |
| volatile uint32_t readRegRemainingTimes; /*!< Read RDR register remaining times . */ |
| |
| uint32_t totalByteCount; /*!< Number of transfer bytes*/ |
| |
| uint32_t txBuffIfNull; /*!< Used if there is not txData for DMA purpose.*/ |
| uint32_t rxBuffIfNull; /*!< Used if there is not rxData for DMA purpose.*/ |
| |
| volatile uint8_t state; /*!< LPSPI transfer state.*/ |
| |
| uint32_t errorCount; /*!< Error count for slave transfer.*/ |
| |
| lpspi_slave_edma_transfer_callback_t callback; /*!< Completion callback. */ |
| void *userData; /*!< Callback user data. */ |
| |
| edma_handle_t *edmaRxRegToRxDataHandle; /*!<edma_handle_t handle point used for RxReg to RxData buff*/ |
| edma_handle_t *edmaTxDataToTxRegHandle; /*!<edma_handle_t handle point used for TxData to TxReg*/ |
| |
| edma_tcd_t lpspiSoftwareTCD[2]; /*!<SoftwareTCD , internal used*/ |
| }; |
| |
| /*********************************************************************************************************************** |
| * API |
| **********************************************************************************************************************/ |
| #if defined(__cplusplus) |
| extern "C" { |
| #endif /*_cplusplus*/ |
| |
| /*Transactional APIs*/ |
| |
| /*! |
| * @brief Initializes the LPSPI master eDMA handle. |
| * |
| * This function initializes the LPSPI eDMA handle which can be used for other LPSPI transactional APIs. Usually, for a |
| * specified LPSPI instance, call this API once to get the initialized handle. |
| * |
| * Note that the LPSPI eDMA has a separated (Rx and Rx as two sources) or shared (Rx and Tx are the same source) DMA |
| * request source. |
| * (1) For a separated DMA request source, enable and set the Rx DMAMUX source for edmaRxRegToRxDataHandle and |
| * Tx DMAMUX source for edmaIntermediaryToTxRegHandle. |
| * (2) For a shared DMA request source, enable and set the Rx/Rx DMAMUX source for edmaRxRegToRxDataHandle. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle LPSPI handle pointer to lpspi_master_edma_handle_t. |
| * @param callback LPSPI callback. |
| * @param userData callback function parameter. |
| * @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t. |
| * @param edmaTxDataToTxRegHandle edmaTxDataToTxRegHandle pointer to edma_handle_t. |
| */ |
| void LPSPI_MasterTransferCreateHandleEDMA(LPSPI_Type *base, |
| lpspi_master_edma_handle_t *handle, |
| lpspi_master_edma_transfer_callback_t callback, |
| void *userData, |
| edma_handle_t *edmaRxRegToRxDataHandle, |
| edma_handle_t *edmaTxDataToTxRegHandle); |
| |
| /*! |
| * @brief LPSPI master transfer data using eDMA. |
| * |
| * This function transfers data using eDMA. This is a non-blocking function, which returns right away. When all data |
| * is transferred, the callback function is called. |
| * |
| * Note: |
| * The transfer data size should be an integer multiple of bytesPerFrame if bytesPerFrame is less than or equal to 4. |
| * For bytesPerFrame greater than 4: |
| * The transfer data size should be equal to bytesPerFrame if the bytesPerFrame is not an integer multiple of 4. |
| * Otherwise, the transfer data size can be an integer multiple of bytesPerFrame. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle pointer to lpspi_master_edma_handle_t structure which stores the transfer state. |
| * @param transfer pointer to lpspi_transfer_t structure. |
| * @return status of status_t. |
| */ |
| status_t LPSPI_MasterTransferEDMA(LPSPI_Type *base, lpspi_master_edma_handle_t *handle, lpspi_transfer_t *transfer); |
| |
| /*! |
| * @brief LPSPI master aborts a transfer which is using eDMA. |
| * |
| * This function aborts a transfer which is using eDMA. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle pointer to lpspi_master_edma_handle_t structure which stores the transfer state. |
| */ |
| void LPSPI_MasterTransferAbortEDMA(LPSPI_Type *base, lpspi_master_edma_handle_t *handle); |
| |
| /*! |
| * @brief Gets the master eDMA transfer remaining bytes. |
| * |
| * This function gets the master eDMA transfer remaining bytes. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle pointer to lpspi_master_edma_handle_t structure which stores the transfer state. |
| * @param count Number of bytes transferred so far by the EDMA transaction. |
| * @return status of status_t. |
| */ |
| status_t LPSPI_MasterTransferGetCountEDMA(LPSPI_Type *base, lpspi_master_edma_handle_t *handle, size_t *count); |
| |
| /*! |
| * @brief Initializes the LPSPI slave eDMA handle. |
| * |
| * This function initializes the LPSPI eDMA handle which can be used for other LPSPI transactional APIs. Usually, for a |
| * specified LPSPI instance, call this API once to get the initialized handle. |
| * |
| * Note that LPSPI eDMA has a separated (Rx and Tx as two sources) or shared (Rx and Tx as the same source) DMA request |
| * source. |
| * |
| * (1) For a separated DMA request source, enable and set the Rx DMAMUX source for edmaRxRegToRxDataHandle and |
| * Tx DMAMUX source for edmaTxDataToTxRegHandle. |
| * (2) For a shared DMA request source, enable and set the Rx/Rx DMAMUX source for edmaRxRegToRxDataHandle . |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle LPSPI handle pointer to lpspi_slave_edma_handle_t. |
| * @param callback LPSPI callback. |
| * @param userData callback function parameter. |
| * @param edmaRxRegToRxDataHandle edmaRxRegToRxDataHandle pointer to edma_handle_t. |
| * @param edmaTxDataToTxRegHandle edmaTxDataToTxRegHandle pointer to edma_handle_t. |
| */ |
| void LPSPI_SlaveTransferCreateHandleEDMA(LPSPI_Type *base, |
| lpspi_slave_edma_handle_t *handle, |
| lpspi_slave_edma_transfer_callback_t callback, |
| void *userData, |
| edma_handle_t *edmaRxRegToRxDataHandle, |
| edma_handle_t *edmaTxDataToTxRegHandle); |
| |
| /*! |
| * @brief LPSPI slave transfers data using eDMA. |
| * |
| * This function transfers data using eDMA. This is a non-blocking function, which return right away. When all data |
| * is transferred, the callback function is called. |
| * |
| * Note: |
| * The transfer data size should be an integer multiple of bytesPerFrame if bytesPerFrame is less than or equal to 4. |
| * For bytesPerFrame greater than 4: |
| * The transfer data size should be equal to bytesPerFrame if the bytesPerFrame is not an integer multiple of 4. |
| * Otherwise, the transfer data size can be an integer multiple of bytesPerFrame. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle pointer to lpspi_slave_edma_handle_t structure which stores the transfer state. |
| * @param transfer pointer to lpspi_transfer_t structure. |
| * @return status of status_t. |
| */ |
| status_t LPSPI_SlaveTransferEDMA(LPSPI_Type *base, lpspi_slave_edma_handle_t *handle, lpspi_transfer_t *transfer); |
| |
| /*! |
| * @brief LPSPI slave aborts a transfer which is using eDMA. |
| * |
| * This function aborts a transfer which is using eDMA. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle pointer to lpspi_slave_edma_handle_t structure which stores the transfer state. |
| */ |
| void LPSPI_SlaveTransferAbortEDMA(LPSPI_Type *base, lpspi_slave_edma_handle_t *handle); |
| |
| /*! |
| * @brief Gets the slave eDMA transfer remaining bytes. |
| * |
| * This function gets the slave eDMA transfer remaining bytes. |
| * |
| * @param base LPSPI peripheral base address. |
| * @param handle pointer to lpspi_slave_edma_handle_t structure which stores the transfer state. |
| * @param count Number of bytes transferred so far by the eDMA transaction. |
| * @return status of status_t. |
| */ |
| status_t LPSPI_SlaveTransferGetCountEDMA(LPSPI_Type *base, lpspi_slave_edma_handle_t *handle, size_t *count); |
| |
| #if defined(__cplusplus) |
| } |
| #endif /*_cplusplus*/ |
| /*! |
| *@} |
| */ |
| |
| #endif /*_FSL_LPSPI_EDMA_H_*/ |