380 lines
13 KiB
C
380 lines
13 KiB
C
/*
|
|
* Copyright (c) 2015, Freescale Semiconductor, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* 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 Freescale Semiconductor, Inc. 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.
|
|
*/
|
|
|
|
#include "fsl_sai_edma.h"
|
|
|
|
/*******************************************************************************
|
|
* Definitations
|
|
******************************************************************************/
|
|
/* Used for 32byte aligned */
|
|
#define STCD_ADDR(address) (edma_tcd_t *)(((uint32_t)address + 32) & ~0x1FU)
|
|
|
|
/*<! Structure definition for uart_edma_private_handle_t. The structure is private. */
|
|
typedef struct _sai_edma_private_handle
|
|
{
|
|
I2S_Type *base;
|
|
sai_edma_handle_t *handle;
|
|
} sai_edma_private_handle_t;
|
|
|
|
enum _sai_edma_transfer_state
|
|
{
|
|
kSAI_Busy = 0x0U, /*!< SAI is busy */
|
|
kSAI_Idle, /*!< Transfer is done. */
|
|
};
|
|
|
|
/*<! Private handle only used for internally. */
|
|
static sai_edma_private_handle_t s_edmaPrivateHandle[FSL_FEATURE_SOC_I2S_COUNT][2];
|
|
|
|
/*******************************************************************************
|
|
* Prototypes
|
|
******************************************************************************/
|
|
/*!
|
|
* @brief Get the instance number for SAI.
|
|
*
|
|
* @param base SAI base pointer.
|
|
*/
|
|
extern uint32_t SAI_GetInstance(I2S_Type *base);
|
|
|
|
/*!
|
|
* @brief SAI EDMA callback for send.
|
|
*
|
|
* @param handle pointer to sai_edma_handle_t structure which stores the transfer state.
|
|
* @param userData Parameter for user callback.
|
|
* @param done If the DMA transfer finished.
|
|
* @param tcds The TCD index.
|
|
*/
|
|
static void SAI_TxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds);
|
|
|
|
/*!
|
|
* @brief SAI EDMA callback for receive.
|
|
*
|
|
* @param handle pointer to sai_edma_handle_t structure which stores the transfer state.
|
|
* @param userData Parameter for user callback.
|
|
* @param done If the DMA transfer finished.
|
|
* @param tcds The TCD index.
|
|
*/
|
|
static void SAI_RxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds);
|
|
|
|
/*******************************************************************************
|
|
* Code
|
|
******************************************************************************/
|
|
static void SAI_TxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds)
|
|
{
|
|
sai_edma_private_handle_t *privHandle = (sai_edma_private_handle_t *)userData;
|
|
sai_edma_handle_t *saiHandle = privHandle->handle;
|
|
|
|
/* If finished a blcok, call the callback function */
|
|
memset(&saiHandle->saiQueue[saiHandle->queueDriver], 0, sizeof(sai_transfer_t));
|
|
saiHandle->queueDriver = (saiHandle->queueDriver + 1) % SAI_XFER_QUEUE_SIZE;
|
|
if (saiHandle->callback)
|
|
{
|
|
(saiHandle->callback)(privHandle->base, saiHandle, kStatus_SAI_TxIdle, saiHandle->userData);
|
|
}
|
|
|
|
/* If all data finished, just stop the transfer */
|
|
if (saiHandle->saiQueue[saiHandle->queueDriver].data == NULL)
|
|
{
|
|
SAI_TransferAbortSendEDMA(privHandle->base, saiHandle);
|
|
}
|
|
}
|
|
|
|
static void SAI_RxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds)
|
|
{
|
|
sai_edma_private_handle_t *privHandle = (sai_edma_private_handle_t *)userData;
|
|
sai_edma_handle_t *saiHandle = privHandle->handle;
|
|
|
|
/* If finished a blcok, call the callback function */
|
|
memset(&saiHandle->saiQueue[saiHandle->queueDriver], 0, sizeof(sai_transfer_t));
|
|
saiHandle->queueDriver = (saiHandle->queueDriver + 1) % SAI_XFER_QUEUE_SIZE;
|
|
if (saiHandle->callback)
|
|
{
|
|
(saiHandle->callback)(privHandle->base, saiHandle, kStatus_SAI_RxIdle, saiHandle->userData);
|
|
}
|
|
|
|
/* If all data finished, just stop the transfer */
|
|
if (saiHandle->saiQueue[saiHandle->queueDriver].data == NULL)
|
|
{
|
|
SAI_TransferAbortReceiveEDMA(privHandle->base, saiHandle);
|
|
}
|
|
}
|
|
|
|
void SAI_TransferTxCreateHandleEDMA(
|
|
I2S_Type *base, sai_edma_handle_t *handle, sai_edma_callback_t callback, void *userData, edma_handle_t *dmaHandle)
|
|
{
|
|
assert(handle && dmaHandle);
|
|
|
|
uint32_t instance = SAI_GetInstance(base);
|
|
|
|
/* Set sai base to handle */
|
|
handle->dmaHandle = dmaHandle;
|
|
handle->callback = callback;
|
|
handle->userData = userData;
|
|
|
|
/* Set SAI state to idle */
|
|
handle->state = kSAI_Idle;
|
|
|
|
s_edmaPrivateHandle[instance][0].base = base;
|
|
s_edmaPrivateHandle[instance][0].handle = handle;
|
|
|
|
/* Need to use scatter gather */
|
|
EDMA_InstallTCDMemory(dmaHandle, STCD_ADDR(handle->tcd), SAI_XFER_QUEUE_SIZE);
|
|
|
|
/* Install callback for Tx dma channel */
|
|
EDMA_SetCallback(dmaHandle, SAI_TxEDMACallback, &s_edmaPrivateHandle[instance][0]);
|
|
}
|
|
|
|
void SAI_TransferRxCreateHandleEDMA(
|
|
I2S_Type *base, sai_edma_handle_t *handle, sai_edma_callback_t callback, void *userData, edma_handle_t *dmaHandle)
|
|
{
|
|
assert(handle && dmaHandle);
|
|
|
|
uint32_t instance = SAI_GetInstance(base);
|
|
|
|
/* Set sai base to handle */
|
|
handle->dmaHandle = dmaHandle;
|
|
handle->callback = callback;
|
|
handle->userData = userData;
|
|
|
|
/* Set SAI state to idle */
|
|
handle->state = kSAI_Idle;
|
|
|
|
s_edmaPrivateHandle[instance][1].base = base;
|
|
s_edmaPrivateHandle[instance][1].handle = handle;
|
|
|
|
/* Need to use scatter gather */
|
|
EDMA_InstallTCDMemory(dmaHandle, STCD_ADDR(handle->tcd), SAI_XFER_QUEUE_SIZE);
|
|
|
|
/* Install callback for Tx dma channel */
|
|
EDMA_SetCallback(dmaHandle, SAI_RxEDMACallback, &s_edmaPrivateHandle[instance][1]);
|
|
}
|
|
|
|
void SAI_TransferTxSetFormatEDMA(I2S_Type *base,
|
|
sai_edma_handle_t *handle,
|
|
sai_transfer_format_t *format,
|
|
uint32_t mclkSourceClockHz,
|
|
uint32_t bclkSourceClockHz)
|
|
{
|
|
assert(handle && format);
|
|
|
|
/* Configure the audio format to SAI registers */
|
|
SAI_TxSetFormat(base, format, mclkSourceClockHz, bclkSourceClockHz);
|
|
|
|
/* Get the tranfer size from format, this should be used in EDMA configuration */
|
|
handle->bytesPerFrame = format->bitWidth / 8U;
|
|
|
|
/* Update the data channel SAI used */
|
|
handle->channel = format->channel;
|
|
#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1)
|
|
handle->count = FSL_FEATURE_SAI_FIFO_COUNT - format->watermark;
|
|
#else
|
|
handle->count = 1U;
|
|
#endif /* FSL_FEATURE_SAI_FIFO_COUNT */
|
|
}
|
|
|
|
void SAI_TransferRxSetFormatEDMA(I2S_Type *base,
|
|
sai_edma_handle_t *handle,
|
|
sai_transfer_format_t *format,
|
|
uint32_t mclkSourceClockHz,
|
|
uint32_t bclkSourceClockHz)
|
|
{
|
|
assert(handle && format);
|
|
|
|
/* Configure the audio format to SAI registers */
|
|
SAI_RxSetFormat(base, format, mclkSourceClockHz, bclkSourceClockHz);
|
|
|
|
/* Get the tranfer size from format, this should be used in EDMA configuration */
|
|
handle->bytesPerFrame = format->bitWidth / 8U;
|
|
|
|
/* Update the data channel SAI used */
|
|
handle->channel = format->channel;
|
|
|
|
#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1)
|
|
handle->count = format->watermark;
|
|
#else
|
|
handle->count = 1U;
|
|
#endif /* FSL_FEATURE_SAI_FIFO_COUNT */
|
|
}
|
|
|
|
status_t SAI_TransferSendEDMA(I2S_Type *base, sai_edma_handle_t *handle, sai_transfer_t *xfer)
|
|
{
|
|
assert(handle && xfer);
|
|
|
|
edma_transfer_config_t config = {0};
|
|
uint32_t destAddr = SAI_TxGetDataRegisterAddress(base, handle->channel);
|
|
|
|
/* Check if input parameter invalid */
|
|
if ((xfer->data == NULL) || (xfer->dataSize == 0U))
|
|
{
|
|
return kStatus_InvalidArgument;
|
|
}
|
|
|
|
if (handle->saiQueue[handle->queueUser].data)
|
|
{
|
|
return kStatus_SAI_QueueFull;
|
|
}
|
|
|
|
/* Change the state of handle */
|
|
handle->state = kSAI_Busy;
|
|
|
|
/* Update the queue state */
|
|
handle->transferSize[handle->queueUser] = xfer->dataSize;
|
|
handle->saiQueue[handle->queueUser].data = xfer->data;
|
|
handle->saiQueue[handle->queueUser].dataSize = xfer->dataSize;
|
|
handle->queueUser = (handle->queueUser + 1) % SAI_XFER_QUEUE_SIZE;
|
|
|
|
/* Prepare edma configure */
|
|
EDMA_PrepareTransfer(&config, xfer->data, handle->bytesPerFrame, (void *)destAddr, handle->bytesPerFrame,
|
|
handle->count * handle->bytesPerFrame, xfer->dataSize, kEDMA_MemoryToPeripheral);
|
|
|
|
EDMA_SubmitTransfer(handle->dmaHandle, &config);
|
|
|
|
/* Start DMA transfer */
|
|
EDMA_StartTransfer(handle->dmaHandle);
|
|
|
|
/* Enable DMA enable bit */
|
|
SAI_TxEnableDMA(base, kSAI_FIFORequestDMAEnable, true);
|
|
|
|
/* Enable SAI Tx clock */
|
|
SAI_TxEnable(base, true);
|
|
|
|
return kStatus_Success;
|
|
}
|
|
|
|
status_t SAI_TransferReceiveEDMA(I2S_Type *base, sai_edma_handle_t *handle, sai_transfer_t *xfer)
|
|
{
|
|
assert(handle && xfer);
|
|
|
|
edma_transfer_config_t config = {0};
|
|
uint32_t srcAddr = SAI_RxGetDataRegisterAddress(base, handle->channel);
|
|
|
|
/* Check if input parameter invalid */
|
|
if ((xfer->data == NULL) || (xfer->dataSize == 0U))
|
|
{
|
|
return kStatus_InvalidArgument;
|
|
}
|
|
|
|
if (handle->saiQueue[handle->queueUser].data)
|
|
{
|
|
return kStatus_SAI_QueueFull;
|
|
}
|
|
|
|
/* Change the state of handle */
|
|
handle->state = kSAI_Busy;
|
|
|
|
/* Update queue state */
|
|
handle->transferSize[handle->queueUser] = xfer->dataSize;
|
|
handle->saiQueue[handle->queueUser].data = xfer->data;
|
|
handle->saiQueue[handle->queueUser].dataSize = xfer->dataSize;
|
|
handle->queueUser = (handle->queueUser + 1) % SAI_XFER_QUEUE_SIZE;
|
|
|
|
/* Prepare edma configure */
|
|
EDMA_PrepareTransfer(&config, (void *)srcAddr, handle->bytesPerFrame, xfer->data, handle->bytesPerFrame,
|
|
handle->count * handle->bytesPerFrame, xfer->dataSize, kEDMA_PeripheralToMemory);
|
|
|
|
EDMA_SubmitTransfer(handle->dmaHandle, &config);
|
|
|
|
/* Start DMA transfer */
|
|
EDMA_StartTransfer(handle->dmaHandle);
|
|
|
|
/* Enable DMA enable bit */
|
|
SAI_RxEnableDMA(base, kSAI_FIFORequestDMAEnable, true);
|
|
|
|
/* Enable SAI Rx clock */
|
|
SAI_RxEnable(base, true);
|
|
|
|
return kStatus_Success;
|
|
}
|
|
|
|
void SAI_TransferAbortSendEDMA(I2S_Type *base, sai_edma_handle_t *handle)
|
|
{
|
|
assert(handle);
|
|
|
|
/* Disable dma */
|
|
EDMA_AbortTransfer(handle->dmaHandle);
|
|
|
|
/* Disable DMA enable bit */
|
|
SAI_TxEnableDMA(base, kSAI_FIFORequestDMAEnable, false);
|
|
|
|
/* Set the handle state */
|
|
handle->state = kSAI_Idle;
|
|
}
|
|
|
|
void SAI_TransferAbortReceiveEDMA(I2S_Type *base, sai_edma_handle_t *handle)
|
|
{
|
|
assert(handle);
|
|
|
|
/* Disable dma */
|
|
EDMA_AbortTransfer(handle->dmaHandle);
|
|
|
|
/* Disable DMA enable bit */
|
|
SAI_RxEnableDMA(base, kSAI_FIFORequestDMAEnable, false);
|
|
|
|
/* Set the handle state */
|
|
handle->state = kSAI_Idle;
|
|
}
|
|
|
|
status_t SAI_TransferGetSendCountEDMA(I2S_Type *base, sai_edma_handle_t *handle, size_t *count)
|
|
{
|
|
assert(handle);
|
|
|
|
status_t status = kStatus_Success;
|
|
|
|
if (handle->state != kSAI_Busy)
|
|
{
|
|
status = kStatus_NoTransferInProgress;
|
|
}
|
|
else
|
|
{
|
|
*count = (handle->transferSize[handle->queueDriver] -
|
|
EDMA_GetRemainingBytes(handle->dmaHandle->base, handle->dmaHandle->channel));
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
status_t SAI_TransferGetReceiveCountEDMA(I2S_Type *base, sai_edma_handle_t *handle, size_t *count)
|
|
{
|
|
assert(handle);
|
|
|
|
status_t status = kStatus_Success;
|
|
|
|
if (handle->state != kSAI_Busy)
|
|
{
|
|
status = kStatus_NoTransferInProgress;
|
|
}
|
|
else
|
|
{
|
|
*count = (handle->transferSize[handle->queueDriver] -
|
|
EDMA_GetRemainingBytes(handle->dmaHandle->base, handle->dmaHandle->channel));
|
|
}
|
|
|
|
return status;
|
|
}
|