219 lines
9.7 KiB
C
219 lines
9.7 KiB
C
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/*
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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_FLEXIO_I2S_EDMA_H_
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#define _FSL_FLEXIO_I2S_EDMA_H_
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#include "fsl_flexio_i2s.h"
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#include "fsl_edma.h"
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/*!
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* @addtogroup flexio_edma_i2s
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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 _flexio_i2s_edma_handle flexio_i2s_edma_handle_t;
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/*! @brief FlexIO I2S eDMA transfer callback function for finish and error */
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typedef void (*flexio_i2s_edma_callback_t)(FLEXIO_I2S_Type *base,
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flexio_i2s_edma_handle_t *handle,
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status_t status,
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void *userData);
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/*! @brief FlexIO I2S DMA transfer handle, users should not touch the content of the handle.*/
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struct _flexio_i2s_edma_handle
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{
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edma_handle_t *dmaHandle; /*!< DMA handler for FlexIO I2S send */
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uint8_t bytesPerFrame; /*!< Bytes in a frame */
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uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */
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uint32_t state; /*!< Internal state for FlexIO I2S eDMA transfer */
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flexio_i2s_edma_callback_t callback; /*!< Callback for users while transfer finish or error occurred */
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void *userData; /*!< User callback parameter */
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edma_tcd_t tcd[FLEXIO_I2S_XFER_QUEUE_SIZE + 1U]; /*!< TCD pool for eDMA transfer. */
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flexio_i2s_transfer_t queue[FLEXIO_I2S_XFER_QUEUE_SIZE]; /*!< Transfer queue storing queued transfer. */
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size_t transferSize[FLEXIO_I2S_XFER_QUEUE_SIZE]; /*!< Data bytes need to transfer */
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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 FlexIO I2S eDMA handle.
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*
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* This function initializes the FlexIO I2S master DMA handle which can be used for other FlexIO I2S master
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* transactional APIs.
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* Usually, for a specified FlexIO I2S instance, call this API once to get the initialized handle.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S eDMA handle pointer.
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* @param callback FlexIO I2S eDMA callback function called while finished a block.
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* @param userData User parameter for callback.
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* @param dmaHandle eDMA handle for FlexIO I2S. This handle is a static value allocated by users.
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*/
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void FLEXIO_I2S_TransferTxCreateHandleEDMA(FLEXIO_I2S_Type *base,
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flexio_i2s_edma_handle_t *handle,
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flexio_i2s_edma_callback_t callback,
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void *userData,
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edma_handle_t *dmaHandle);
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/*!
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* @brief Initializes the FlexIO I2S Rx eDMA handle.
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*
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* This function initializes the FlexIO I2S slave DMA handle which can be used for other FlexIO I2S master transactional
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* APIs.
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* Usually, for a specified FlexIO I2S instance, call this API once to get the initialized handle.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S eDMA handle pointer.
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* @param callback FlexIO I2S eDMA callback function called while finished a block.
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* @param userData User parameter for callback.
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* @param dmaHandle eDMA handle for FlexIO I2S. This handle is a static value allocated by users.
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*/
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void FLEXIO_I2S_TransferRxCreateHandleEDMA(FLEXIO_I2S_Type *base,
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flexio_i2s_edma_handle_t *handle,
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flexio_i2s_edma_callback_t callback,
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void *userData,
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edma_handle_t *dmaHandle);
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/*!
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* @brief Configures the FlexIO I2S Tx audio format.
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*
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* Audio format can be changed in run-time of FlexIO I2S. This function configures the sample rate and audio data
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* format to be transferred. This function also sets the eDMA parameter according to format.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S eDMA handle pointer
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* @param format Pointer to FlexIO I2S audio data format structure.
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* @param srcClock_Hz FlexIO I2S clock source frequency in Hz, it should be 0 while in slave mode.
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* @retval kStatus_Success Audio format set successfully.
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* @retval kStatus_InvalidArgument The input arguments is invalid.
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*/
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void FLEXIO_I2S_TransferSetFormatEDMA(FLEXIO_I2S_Type *base,
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flexio_i2s_edma_handle_t *handle,
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flexio_i2s_format_t *format,
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uint32_t srcClock_Hz);
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/*!
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* @brief Performs a non-blocking FlexIO I2S transfer using DMA.
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*
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* @note This interface returned immediately after transfer initiates. Users should call
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* FLEXIO_I2S_GetTransferStatus to poll the transfer status and check whether the FlexIO I2S transfer is finished.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S DMA handle pointer.
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* @param xfer Pointer to DMA transfer structure.
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* @retval kStatus_Success Start a FlexIO I2S eDMA send successfully.
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* @retval kStatus_InvalidArgument The input arguments is invalid.
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* @retval kStatus_TxBusy FlexIO I2S is busy sending data.
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*/
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status_t FLEXIO_I2S_TransferSendEDMA(FLEXIO_I2S_Type *base,
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flexio_i2s_edma_handle_t *handle,
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flexio_i2s_transfer_t *xfer);
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/*!
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* @brief Performs a non-blocking FlexIO I2S receive using eDMA.
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*
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* @note This interface returned immediately after transfer initiates. Users should call
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* FLEXIO_I2S_GetReceiveRemainingBytes to poll the transfer status and check whether the FlexIO I2S transfer is finished.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S DMA handle pointer.
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* @param xfer Pointer to DMA transfer structure.
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* @retval kStatus_Success Start a FlexIO I2S eDMA receive successfully.
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* @retval kStatus_InvalidArgument The input arguments is invalid.
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* @retval kStatus_RxBusy FlexIO I2S is busy receiving data.
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*/
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status_t FLEXIO_I2S_TransferReceiveEDMA(FLEXIO_I2S_Type *base,
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flexio_i2s_edma_handle_t *handle,
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flexio_i2s_transfer_t *xfer);
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/*!
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* @brief Aborts a FlexIO I2S transfer using eDMA.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S DMA handle pointer.
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*/
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void FLEXIO_I2S_TransferAbortSendEDMA(FLEXIO_I2S_Type *base, flexio_i2s_edma_handle_t *handle);
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/*!
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* @brief Aborts a FlexIO I2S receive using eDMA.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S DMA handle pointer.
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*/
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void FLEXIO_I2S_TransferAbortReceiveEDMA(FLEXIO_I2S_Type *base, flexio_i2s_edma_handle_t *handle);
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/*!
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* @brief Gets the remaining bytes to be sent.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S DMA handle pointer.
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* @param count Bytes sent.
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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 FLEXIO_I2S_TransferGetSendCountEDMA(FLEXIO_I2S_Type *base, flexio_i2s_edma_handle_t *handle, size_t *count);
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/*!
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* @brief Get the remaining bytes to be received.
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*
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* @param base FlexIO I2S peripheral base address.
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* @param handle FlexIO I2S DMA handle pointer.
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* @param count Bytes received.
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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 FLEXIO_I2S_TransferGetReceiveCountEDMA(FLEXIO_I2S_Type *base, flexio_i2s_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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