368 lines
13 KiB
C
368 lines
13 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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#include "fsl_flexio_i2s_edma.h"
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/*******************************************************************************
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* Definitations
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******************************************************************************/
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/* Used for 32byte aligned */
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#define STCD_ADDR(address) (edma_tcd_t *)(((uint32_t)address + 32) & ~0x1FU)
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/*<! Structure definition for flexio_i2s_edma_private_handle_t. The structure is private. */
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typedef struct _flexio_i2s_edma_private_handle
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{
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FLEXIO_I2S_Type *base;
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flexio_i2s_edma_handle_t *handle;
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} flexio_i2s_edma_private_handle_t;
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enum _flexio_i2s_edma_transfer_state
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{
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kFLEXIO_I2S_Busy = 0x0U, /*!< FLEXIO I2S is busy */
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kFLEXIO_I2S_Idle, /*!< Transfer is done. */
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};
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/*<! Private handle only used for internally. */
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static flexio_i2s_edma_private_handle_t s_edmaPrivateHandle[2];
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/*******************************************************************************
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* Prototypes
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******************************************************************************/
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/*!
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* @brief FLEXIO I2S EDMA callback for send.
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*
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* @param handle pointer to flexio_i2s_edma_handle_t structure which stores the transfer state.
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* @param userData Parameter for user callback.
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* @param done If the DMA transfer finished.
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* @param tcds The TCD index.
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*/
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static void FLEXIO_I2S_TxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds);
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/*!
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* @brief FLEXIO I2S EDMA callback for receive.
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*
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* @param handle pointer to flexio_i2s_edma_handle_t structure which stores the transfer state.
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* @param userData Parameter for user callback.
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* @param done If the DMA transfer finished.
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* @param tcds The TCD index.
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*/
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static void FLEXIO_I2S_RxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds);
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/*******************************************************************************
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* Code
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******************************************************************************/
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static void FLEXIO_I2S_TxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds)
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{
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flexio_i2s_edma_private_handle_t *privHandle = (flexio_i2s_edma_private_handle_t *)userData;
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flexio_i2s_edma_handle_t *flexio_i2sHandle = privHandle->handle;
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/* If finished a blcok, call the callback function */
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memset(&flexio_i2sHandle->queue[flexio_i2sHandle->queueDriver], 0, sizeof(flexio_i2s_transfer_t));
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flexio_i2sHandle->queueDriver = (flexio_i2sHandle->queueDriver + 1) % FLEXIO_I2S_XFER_QUEUE_SIZE;
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if (flexio_i2sHandle->callback)
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{
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(flexio_i2sHandle->callback)(privHandle->base, flexio_i2sHandle, kStatus_Success, flexio_i2sHandle->userData);
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}
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/* If all data finished, just stop the transfer */
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if (flexio_i2sHandle->queue[flexio_i2sHandle->queueDriver].data == NULL)
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{
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FLEXIO_I2S_TransferAbortSendEDMA(privHandle->base, flexio_i2sHandle);
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}
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}
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static void FLEXIO_I2S_RxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds)
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{
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flexio_i2s_edma_private_handle_t *privHandle = (flexio_i2s_edma_private_handle_t *)userData;
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flexio_i2s_edma_handle_t *flexio_i2sHandle = privHandle->handle;
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/* If finished a blcok, call the callback function */
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memset(&flexio_i2sHandle->queue[flexio_i2sHandle->queueDriver], 0, sizeof(flexio_i2s_transfer_t));
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flexio_i2sHandle->queueDriver = (flexio_i2sHandle->queueDriver + 1) % FLEXIO_I2S_XFER_QUEUE_SIZE;
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if (flexio_i2sHandle->callback)
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{
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(flexio_i2sHandle->callback)(privHandle->base, flexio_i2sHandle, kStatus_Success, flexio_i2sHandle->userData);
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}
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/* If all data finished, just stop the transfer */
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if (flexio_i2sHandle->queue[flexio_i2sHandle->queueDriver].data == NULL)
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{
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FLEXIO_I2S_TransferAbortReceiveEDMA(privHandle->base, flexio_i2sHandle);
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}
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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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assert(handle && dmaHandle);
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/* Zero the handle. */
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memset(handle, 0, sizeof(*handle));
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/* Set flexio_i2s base to handle */
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handle->dmaHandle = dmaHandle;
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handle->callback = callback;
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handle->userData = userData;
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/* Set FLEXIO I2S state to idle */
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handle->state = kFLEXIO_I2S_Idle;
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s_edmaPrivateHandle[0].base = base;
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s_edmaPrivateHandle[0].handle = handle;
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/* Need to use scatter gather */
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EDMA_InstallTCDMemory(dmaHandle, STCD_ADDR(handle->tcd), FLEXIO_I2S_XFER_QUEUE_SIZE);
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/* Install callback for Tx dma channel */
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EDMA_SetCallback(dmaHandle, FLEXIO_I2S_TxEDMACallback, &s_edmaPrivateHandle[0]);
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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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assert(handle && dmaHandle);
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/* Zero the handle. */
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memset(handle, 0, sizeof(*handle));
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/* Set flexio_i2s base to handle */
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handle->dmaHandle = dmaHandle;
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handle->callback = callback;
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handle->userData = userData;
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/* Set FLEXIO I2S state to idle */
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handle->state = kFLEXIO_I2S_Idle;
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s_edmaPrivateHandle[1].base = base;
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s_edmaPrivateHandle[1].handle = handle;
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/* Need to use scatter gather */
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EDMA_InstallTCDMemory(dmaHandle, STCD_ADDR(handle->tcd), FLEXIO_I2S_XFER_QUEUE_SIZE);
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/* Install callback for Tx dma channel */
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EDMA_SetCallback(dmaHandle, FLEXIO_I2S_RxEDMACallback, &s_edmaPrivateHandle[1]);
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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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assert(handle && format);
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/* Configure the audio format to FLEXIO I2S registers */
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if (srcClock_Hz != 0)
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{
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/* It is master */
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FLEXIO_I2S_MasterSetFormat(base, format, srcClock_Hz);
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}
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else
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{
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FLEXIO_I2S_SlaveSetFormat(base, format);
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}
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/* Get the tranfer size from format, this should be used in EDMA configuration */
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handle->bytesPerFrame = format->bitWidth / 8U;
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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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assert(handle && xfer);
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edma_transfer_config_t config = {0};
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uint32_t destAddr = FLEXIO_I2S_TxGetDataRegisterAddress(base) + (4U - handle->bytesPerFrame);
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/* Check if input parameter invalid */
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if ((xfer->data == NULL) || (xfer->dataSize == 0U))
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{
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return kStatus_InvalidArgument;
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}
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if (handle->queue[handle->queueUser].data)
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{
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return kStatus_FLEXIO_I2S_QueueFull;
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}
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/* Change the state of handle */
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handle->state = kFLEXIO_I2S_Busy;
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/* Update the queue state */
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handle->queue[handle->queueUser].data = xfer->data;
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handle->queue[handle->queueUser].dataSize = xfer->dataSize;
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handle->transferSize[handle->queueUser] = xfer->dataSize;
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handle->queueUser = (handle->queueUser + 1) % FLEXIO_I2S_XFER_QUEUE_SIZE;
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/* Prepare edma configure */
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EDMA_PrepareTransfer(&config, xfer->data, handle->bytesPerFrame, (void *)destAddr, handle->bytesPerFrame,
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handle->bytesPerFrame, xfer->dataSize, kEDMA_MemoryToPeripheral);
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/* Store the initially configured eDMA minor byte transfer count into the FLEXIO I2S handle */
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handle->nbytes = handle->bytesPerFrame;
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EDMA_SubmitTransfer(handle->dmaHandle, &config);
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/* Start DMA transfer */
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EDMA_StartTransfer(handle->dmaHandle);
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/* Enable DMA enable bit */
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FLEXIO_I2S_TxEnableDMA(base, true);
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/* Enable FLEXIO I2S Tx clock */
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FLEXIO_I2S_Enable(base, true);
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return kStatus_Success;
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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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assert(handle && xfer);
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edma_transfer_config_t config = {0};
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uint32_t srcAddr = FLEXIO_I2S_RxGetDataRegisterAddress(base) + (4U - handle->bytesPerFrame);
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/* Check if input parameter invalid */
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if ((xfer->data == NULL) || (xfer->dataSize == 0U))
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{
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return kStatus_InvalidArgument;
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}
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if (handle->queue[handle->queueUser].data)
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{
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return kStatus_FLEXIO_I2S_QueueFull;
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}
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/* Change the state of handle */
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handle->state = kFLEXIO_I2S_Busy;
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/* Update queue state */
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handle->queue[handle->queueUser].data = xfer->data;
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handle->queue[handle->queueUser].dataSize = xfer->dataSize;
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handle->transferSize[handle->queueUser] = xfer->dataSize;
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handle->queueUser = (handle->queueUser + 1) % FLEXIO_I2S_XFER_QUEUE_SIZE;
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/* Prepare edma configure */
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EDMA_PrepareTransfer(&config, (void *)srcAddr, handle->bytesPerFrame, xfer->data, handle->bytesPerFrame,
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handle->bytesPerFrame, xfer->dataSize, kEDMA_PeripheralToMemory);
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/* Store the initially configured eDMA minor byte transfer count into the FLEXIO I2S handle */
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handle->nbytes = handle->bytesPerFrame;
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EDMA_SubmitTransfer(handle->dmaHandle, &config);
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/* Start DMA transfer */
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EDMA_StartTransfer(handle->dmaHandle);
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/* Enable DMA enable bit */
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FLEXIO_I2S_RxEnableDMA(base, true);
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/* Enable FLEXIO I2S Rx clock */
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FLEXIO_I2S_Enable(base, true);
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return kStatus_Success;
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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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assert(handle);
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/* Disable dma */
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EDMA_AbortTransfer(handle->dmaHandle);
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/* Disable DMA enable bit */
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FLEXIO_I2S_TxEnableDMA(base, false);
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/* Set the handle state */
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handle->state = kFLEXIO_I2S_Idle;
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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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assert(handle);
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/* Disable dma */
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EDMA_AbortTransfer(handle->dmaHandle);
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/* Disable DMA enable bit */
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FLEXIO_I2S_RxEnableDMA(base, false);
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/* Set the handle state */
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handle->state = kFLEXIO_I2S_Idle;
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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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assert(handle);
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status_t status = kStatus_Success;
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if (handle->state != kFLEXIO_I2S_Busy)
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{
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status = kStatus_NoTransferInProgress;
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}
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else
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{
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*count = handle->transferSize[handle->queueDriver] -
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(uint32_t)handle->nbytes *
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EDMA_GetRemainingMajorLoopCount(handle->dmaHandle->base, handle->dmaHandle->channel);
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}
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return status;
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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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assert(handle);
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status_t status = kStatus_Success;
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if (handle->state != kFLEXIO_I2S_Busy)
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{
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status = kStatus_NoTransferInProgress;
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}
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else
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{
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*count = handle->transferSize[handle->queueDriver] -
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(uint32_t)handle->nbytes *
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EDMA_GetRemainingMajorLoopCount(handle->dmaHandle->base, handle->dmaHandle->channel);
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}
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return status;
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}
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