188 lines
6.5 KiB
C
188 lines
6.5 KiB
C
/*
|
|
* The Clear BSD License
|
|
* Copyright (c) 2016, Freescale Semiconductor, Inc.
|
|
* Copyright 2016-2017 NXP
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted (subject to the limitations in the disclaimer below) 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.
|
|
*
|
|
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
|
|
* 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_I2S_DMA_H_
|
|
#define _FSL_I2S_DMA_H_
|
|
|
|
#include "fsl_device_registers.h"
|
|
#include "fsl_common.h"
|
|
#include "fsl_flexcomm.h"
|
|
|
|
#include "fsl_dma.h"
|
|
#include "fsl_i2s.h"
|
|
|
|
/*******************************************************************************
|
|
* Definitions
|
|
******************************************************************************/
|
|
|
|
/*!
|
|
* @addtogroup i2s_dma_driver
|
|
* @{
|
|
*/
|
|
|
|
/*! @name Driver version */
|
|
/*@{*/
|
|
/*! @brief I2S DMA driver version 2.0.1. */
|
|
#define FSL_I2S_DMA_DRIVER_VERSION (MAKE_VERSION(2, 0, 1))
|
|
/*@}*/
|
|
|
|
/*! @brief Members not to be accessed / modified outside of the driver. */
|
|
typedef struct _i2s_dma_handle i2s_dma_handle_t;
|
|
|
|
/*!
|
|
* @brief Callback function invoked from DMA API on completion.
|
|
*
|
|
* @param base I2S base pointer.
|
|
* @param handle pointer to I2S transaction.
|
|
* @param completionStatus status of the transaction.
|
|
* @param userData optional pointer to user arguments data.
|
|
*/
|
|
typedef void (*i2s_dma_transfer_callback_t)(I2S_Type *base,
|
|
i2s_dma_handle_t *handle,
|
|
status_t completionStatus,
|
|
void *userData);
|
|
|
|
struct _i2s_dma_handle
|
|
{
|
|
uint32_t state; /*!< Internal state of I2S DMA transfer */
|
|
i2s_dma_transfer_callback_t completionCallback; /*!< Callback function pointer */
|
|
void *userData; /*!< Application data passed to callback */
|
|
dma_handle_t *dmaHandle; /*!< DMA handle */
|
|
volatile i2s_transfer_t i2sQueue[I2S_NUM_BUFFERS]; /*!< Transfer queue storing transfer buffers */
|
|
volatile uint8_t queueUser; /*!< Queue index where user's next transfer will be stored */
|
|
volatile uint8_t queueDriver; /*!< Queue index of buffer actually used by the driver */
|
|
};
|
|
|
|
/*******************************************************************************
|
|
* API
|
|
******************************************************************************/
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*!
|
|
* @name Initialization and deinitialization
|
|
* @{
|
|
*/
|
|
|
|
/*! @} */
|
|
|
|
/*!
|
|
* @name DMA API
|
|
* @{
|
|
*/
|
|
|
|
/*!
|
|
* @brief Initializes handle for transfer of audio data.
|
|
*
|
|
* @param base I2S base pointer.
|
|
* @param handle pointer to handle structure.
|
|
* @param dmaHandle pointer to dma handle structure.
|
|
* @param callback function to be called back when transfer is done or fails.
|
|
* @param userData pointer to data passed to callback.
|
|
*/
|
|
void I2S_TxTransferCreateHandleDMA(I2S_Type *base,
|
|
i2s_dma_handle_t *handle,
|
|
dma_handle_t *dmaHandle,
|
|
i2s_dma_transfer_callback_t callback,
|
|
void *userData);
|
|
|
|
/*!
|
|
* @brief Begins or queue sending of the given data.
|
|
*
|
|
* @param base I2S base pointer.
|
|
* @param handle pointer to handle structure.
|
|
* @param transfer data buffer.
|
|
*
|
|
* @retval kStatus_Success
|
|
* @retval kStatus_I2S_Busy if all queue slots are occupied with unsent buffers.
|
|
*/
|
|
status_t I2S_TxTransferSendDMA(I2S_Type *base, i2s_dma_handle_t *handle, i2s_transfer_t transfer);
|
|
|
|
/*!
|
|
* @brief Aborts transfer of data.
|
|
*
|
|
* @param base I2S base pointer.
|
|
* @param handle pointer to handle structure.
|
|
*/
|
|
void I2S_TransferAbortDMA(I2S_Type *base, i2s_dma_handle_t *handle);
|
|
|
|
/*!
|
|
* @brief Initializes handle for reception of audio data.
|
|
*
|
|
* @param base I2S base pointer.
|
|
* @param handle pointer to handle structure.
|
|
* @param dmaHandle pointer to dma handle structure.
|
|
* @param callback function to be called back when transfer is done or fails.
|
|
* @param userData pointer to data passed to callback.
|
|
*/
|
|
void I2S_RxTransferCreateHandleDMA(I2S_Type *base,
|
|
i2s_dma_handle_t *handle,
|
|
dma_handle_t *dmaHandle,
|
|
i2s_dma_transfer_callback_t callback,
|
|
void *userData);
|
|
|
|
/*!
|
|
* @brief Begins or queue reception of data into given buffer.
|
|
*
|
|
* @param base I2S base pointer.
|
|
* @param handle pointer to handle structure.
|
|
* @param transfer data buffer.
|
|
*
|
|
* @retval kStatus_Success
|
|
* @retval kStatus_I2S_Busy if all queue slots are occupied with buffers
|
|
* which are not full.
|
|
*/
|
|
status_t I2S_RxTransferReceiveDMA(I2S_Type *base, i2s_dma_handle_t *handle, i2s_transfer_t transfer);
|
|
|
|
/*!
|
|
* @brief Invoked from DMA interrupt handler.
|
|
*
|
|
* @param handle pointer to DMA handle structure.
|
|
* @param userData argument for user callback.
|
|
* @param transferDone if transfer was done.
|
|
* @param tcds
|
|
*/
|
|
void I2S_DMACallback(dma_handle_t *handle, void *userData, bool transferDone, uint32_t tcds);
|
|
|
|
/*! @} */
|
|
|
|
/*! @} */
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* _FSL_I2S_DMA_H_ */
|