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mbed-os/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K82F/drivers/fsl_sai_edma.c
- Committer:
- kadonotakashi
- Date:
- 2018-10-10
- Revision:
- 0:8fdf9a60065b
File content as of revision 0:8fdf9a60065b:
/* * 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); /* Store the initially configured eDMA minor byte transfer count into the SAI handle */ handle->nbytes = handle->count * handle->bytesPerFrame; 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); /* Store the initially configured eDMA minor byte transfer count into the SAI handle */ handle->nbytes = handle->count * handle->bytesPerFrame; 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); /* Disable Tx */ SAI_TxEnable(base, 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); /* Disable Rx */ SAI_RxEnable(base, 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] - (uint32_t)handle->nbytes * EDMA_GetRemainingMajorLoopCount(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] - (uint32_t)handle->nbytes * EDMA_GetRemainingMajorLoopCount(handle->dmaHandle->base, handle->dmaHandle->channel)); } return status; }