| /* |
| * Copyright (c) 2015, Freescale Semiconductor, Inc. |
| * Copyright 2016-2017 NXP |
| * |
| * 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 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. |
| * |
| * 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_flexio_i2s_edma.h" |
| |
| /******************************************************************************* |
| * Definitations |
| ******************************************************************************/ |
| /* Used for 32byte aligned */ |
| #define STCD_ADDR(address) (edma_tcd_t *)(((uint32_t)address + 32) & ~0x1FU) |
| |
| /*<! Structure definition for flexio_i2s_edma_private_handle_t. The structure is private. */ |
| typedef struct _flexio_i2s_edma_private_handle |
| { |
| FLEXIO_I2S_Type *base; |
| flexio_i2s_edma_handle_t *handle; |
| } flexio_i2s_edma_private_handle_t; |
| |
| enum _flexio_i2s_edma_transfer_state |
| { |
| kFLEXIO_I2S_Busy = 0x0U, /*!< FLEXIO I2S is busy */ |
| kFLEXIO_I2S_Idle, /*!< Transfer is done. */ |
| }; |
| |
| /*<! Private handle only used for internally. */ |
| static flexio_i2s_edma_private_handle_t s_edmaPrivateHandle[2]; |
| |
| /******************************************************************************* |
| * Prototypes |
| ******************************************************************************/ |
| /*! |
| * @brief FLEXIO I2S EDMA callback for send. |
| * |
| * @param handle pointer to flexio_i2s_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 FLEXIO_I2S_TxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds); |
| |
| /*! |
| * @brief FLEXIO I2S EDMA callback for receive. |
| * |
| * @param handle pointer to flexio_i2s_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 FLEXIO_I2S_RxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds); |
| |
| /******************************************************************************* |
| * Code |
| ******************************************************************************/ |
| static void FLEXIO_I2S_TxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds) |
| { |
| flexio_i2s_edma_private_handle_t *privHandle = (flexio_i2s_edma_private_handle_t *)userData; |
| flexio_i2s_edma_handle_t *flexio_i2sHandle = privHandle->handle; |
| |
| /* If finished a blcok, call the callback function */ |
| memset(&flexio_i2sHandle->queue[flexio_i2sHandle->queueDriver], 0, sizeof(flexio_i2s_transfer_t)); |
| flexio_i2sHandle->queueDriver = (flexio_i2sHandle->queueDriver + 1) % FLEXIO_I2S_XFER_QUEUE_SIZE; |
| if (flexio_i2sHandle->callback) |
| { |
| (flexio_i2sHandle->callback)(privHandle->base, flexio_i2sHandle, kStatus_Success, flexio_i2sHandle->userData); |
| } |
| |
| /* If all data finished, just stop the transfer */ |
| if (flexio_i2sHandle->queue[flexio_i2sHandle->queueDriver].data == NULL) |
| { |
| FLEXIO_I2S_TransferAbortSendEDMA(privHandle->base, flexio_i2sHandle); |
| } |
| } |
| |
| static void FLEXIO_I2S_RxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds) |
| { |
| flexio_i2s_edma_private_handle_t *privHandle = (flexio_i2s_edma_private_handle_t *)userData; |
| flexio_i2s_edma_handle_t *flexio_i2sHandle = privHandle->handle; |
| |
| /* If finished a blcok, call the callback function */ |
| memset(&flexio_i2sHandle->queue[flexio_i2sHandle->queueDriver], 0, sizeof(flexio_i2s_transfer_t)); |
| flexio_i2sHandle->queueDriver = (flexio_i2sHandle->queueDriver + 1) % FLEXIO_I2S_XFER_QUEUE_SIZE; |
| if (flexio_i2sHandle->callback) |
| { |
| (flexio_i2sHandle->callback)(privHandle->base, flexio_i2sHandle, kStatus_Success, flexio_i2sHandle->userData); |
| } |
| |
| /* If all data finished, just stop the transfer */ |
| if (flexio_i2sHandle->queue[flexio_i2sHandle->queueDriver].data == NULL) |
| { |
| FLEXIO_I2S_TransferAbortReceiveEDMA(privHandle->base, flexio_i2sHandle); |
| } |
| } |
| |
| void FLEXIO_I2S_TransferTxCreateHandleEDMA(FLEXIO_I2S_Type *base, |
| flexio_i2s_edma_handle_t *handle, |
| flexio_i2s_edma_callback_t callback, |
| void *userData, |
| edma_handle_t *dmaHandle) |
| { |
| assert(handle && dmaHandle); |
| |
| /* Zero the handle. */ |
| memset(handle, 0, sizeof(*handle)); |
| |
| /* Set flexio_i2s base to handle */ |
| handle->dmaHandle = dmaHandle; |
| handle->callback = callback; |
| handle->userData = userData; |
| |
| /* Set FLEXIO I2S state to idle */ |
| handle->state = kFLEXIO_I2S_Idle; |
| |
| s_edmaPrivateHandle[0].base = base; |
| s_edmaPrivateHandle[0].handle = handle; |
| |
| /* Need to use scatter gather */ |
| EDMA_InstallTCDMemory(dmaHandle, STCD_ADDR(handle->tcd), FLEXIO_I2S_XFER_QUEUE_SIZE); |
| |
| /* Install callback for Tx dma channel */ |
| EDMA_SetCallback(dmaHandle, FLEXIO_I2S_TxEDMACallback, &s_edmaPrivateHandle[0]); |
| } |
| |
| void FLEXIO_I2S_TransferRxCreateHandleEDMA(FLEXIO_I2S_Type *base, |
| flexio_i2s_edma_handle_t *handle, |
| flexio_i2s_edma_callback_t callback, |
| void *userData, |
| edma_handle_t *dmaHandle) |
| { |
| assert(handle && dmaHandle); |
| |
| /* Zero the handle. */ |
| memset(handle, 0, sizeof(*handle)); |
| |
| /* Set flexio_i2s base to handle */ |
| handle->dmaHandle = dmaHandle; |
| handle->callback = callback; |
| handle->userData = userData; |
| |
| /* Set FLEXIO I2S state to idle */ |
| handle->state = kFLEXIO_I2S_Idle; |
| |
| s_edmaPrivateHandle[1].base = base; |
| s_edmaPrivateHandle[1].handle = handle; |
| |
| /* Need to use scatter gather */ |
| EDMA_InstallTCDMemory(dmaHandle, STCD_ADDR(handle->tcd), FLEXIO_I2S_XFER_QUEUE_SIZE); |
| |
| /* Install callback for Tx dma channel */ |
| EDMA_SetCallback(dmaHandle, FLEXIO_I2S_RxEDMACallback, &s_edmaPrivateHandle[1]); |
| } |
| |
| void FLEXIO_I2S_TransferSetFormatEDMA(FLEXIO_I2S_Type *base, |
| flexio_i2s_edma_handle_t *handle, |
| flexio_i2s_format_t *format, |
| uint32_t srcClock_Hz) |
| { |
| assert(handle && format); |
| |
| /* Configure the audio format to FLEXIO I2S registers */ |
| if (srcClock_Hz != 0) |
| { |
| /* It is master */ |
| FLEXIO_I2S_MasterSetFormat(base, format, srcClock_Hz); |
| } |
| else |
| { |
| FLEXIO_I2S_SlaveSetFormat(base, format); |
| } |
| |
| /* Get the tranfer size from format, this should be used in EDMA configuration */ |
| handle->bytesPerFrame = format->bitWidth / 8U; |
| } |
| |
| status_t FLEXIO_I2S_TransferSendEDMA(FLEXIO_I2S_Type *base, |
| flexio_i2s_edma_handle_t *handle, |
| flexio_i2s_transfer_t *xfer) |
| { |
| assert(handle && xfer); |
| |
| edma_transfer_config_t config = {0}; |
| uint32_t destAddr = FLEXIO_I2S_TxGetDataRegisterAddress(base) + (4U - handle->bytesPerFrame); |
| |
| /* Check if input parameter invalid */ |
| if ((xfer->data == NULL) || (xfer->dataSize == 0U)) |
| { |
| return kStatus_InvalidArgument; |
| } |
| |
| if (handle->queue[handle->queueUser].data) |
| { |
| return kStatus_FLEXIO_I2S_QueueFull; |
| } |
| |
| /* Change the state of handle */ |
| handle->state = kFLEXIO_I2S_Busy; |
| |
| /* Update the queue state */ |
| handle->queue[handle->queueUser].data = xfer->data; |
| handle->queue[handle->queueUser].dataSize = xfer->dataSize; |
| handle->transferSize[handle->queueUser] = xfer->dataSize; |
| handle->queueUser = (handle->queueUser + 1) % FLEXIO_I2S_XFER_QUEUE_SIZE; |
| |
| /* Prepare edma configure */ |
| EDMA_PrepareTransfer(&config, xfer->data, handle->bytesPerFrame, (void *)destAddr, handle->bytesPerFrame, |
| handle->bytesPerFrame, xfer->dataSize, kEDMA_MemoryToPeripheral); |
| |
| /* Store the initially configured eDMA minor byte transfer count into the FLEXIO I2S handle */ |
| handle->nbytes = handle->bytesPerFrame; |
| |
| EDMA_SubmitTransfer(handle->dmaHandle, &config); |
| |
| /* Start DMA transfer */ |
| EDMA_StartTransfer(handle->dmaHandle); |
| |
| /* Enable DMA enable bit */ |
| FLEXIO_I2S_TxEnableDMA(base, true); |
| |
| /* Enable FLEXIO I2S Tx clock */ |
| FLEXIO_I2S_Enable(base, true); |
| |
| return kStatus_Success; |
| } |
| |
| status_t FLEXIO_I2S_TransferReceiveEDMA(FLEXIO_I2S_Type *base, |
| flexio_i2s_edma_handle_t *handle, |
| flexio_i2s_transfer_t *xfer) |
| { |
| assert(handle && xfer); |
| |
| edma_transfer_config_t config = {0}; |
| uint32_t srcAddr = FLEXIO_I2S_RxGetDataRegisterAddress(base) + (4U - handle->bytesPerFrame); |
| |
| /* Check if input parameter invalid */ |
| if ((xfer->data == NULL) || (xfer->dataSize == 0U)) |
| { |
| return kStatus_InvalidArgument; |
| } |
| |
| if (handle->queue[handle->queueUser].data) |
| { |
| return kStatus_FLEXIO_I2S_QueueFull; |
| } |
| |
| /* Change the state of handle */ |
| handle->state = kFLEXIO_I2S_Busy; |
| |
| /* Update queue state */ |
| handle->queue[handle->queueUser].data = xfer->data; |
| handle->queue[handle->queueUser].dataSize = xfer->dataSize; |
| handle->transferSize[handle->queueUser] = xfer->dataSize; |
| handle->queueUser = (handle->queueUser + 1) % FLEXIO_I2S_XFER_QUEUE_SIZE; |
| |
| /* Prepare edma configure */ |
| EDMA_PrepareTransfer(&config, (void *)srcAddr, handle->bytesPerFrame, xfer->data, handle->bytesPerFrame, |
| handle->bytesPerFrame, xfer->dataSize, kEDMA_PeripheralToMemory); |
| |
| /* Store the initially configured eDMA minor byte transfer count into the FLEXIO I2S handle */ |
| handle->nbytes = handle->bytesPerFrame; |
| |
| EDMA_SubmitTransfer(handle->dmaHandle, &config); |
| |
| /* Start DMA transfer */ |
| EDMA_StartTransfer(handle->dmaHandle); |
| |
| /* Enable DMA enable bit */ |
| FLEXIO_I2S_RxEnableDMA(base, true); |
| |
| /* Enable FLEXIO I2S Rx clock */ |
| FLEXIO_I2S_Enable(base, true); |
| |
| return kStatus_Success; |
| } |
| |
| void FLEXIO_I2S_TransferAbortSendEDMA(FLEXIO_I2S_Type *base, flexio_i2s_edma_handle_t *handle) |
| { |
| assert(handle); |
| |
| /* Disable dma */ |
| EDMA_AbortTransfer(handle->dmaHandle); |
| |
| /* Disable DMA enable bit */ |
| FLEXIO_I2S_TxEnableDMA(base, false); |
| |
| /* Set the handle state */ |
| handle->state = kFLEXIO_I2S_Idle; |
| } |
| |
| void FLEXIO_I2S_TransferAbortReceiveEDMA(FLEXIO_I2S_Type *base, flexio_i2s_edma_handle_t *handle) |
| { |
| assert(handle); |
| |
| /* Disable dma */ |
| EDMA_AbortTransfer(handle->dmaHandle); |
| |
| /* Disable DMA enable bit */ |
| FLEXIO_I2S_RxEnableDMA(base, false); |
| |
| /* Set the handle state */ |
| handle->state = kFLEXIO_I2S_Idle; |
| } |
| |
| status_t FLEXIO_I2S_TransferGetSendCountEDMA(FLEXIO_I2S_Type *base, flexio_i2s_edma_handle_t *handle, size_t *count) |
| { |
| assert(handle); |
| |
| status_t status = kStatus_Success; |
| |
| if (handle->state != kFLEXIO_I2S_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 FLEXIO_I2S_TransferGetReceiveCountEDMA(FLEXIO_I2S_Type *base, flexio_i2s_edma_handle_t *handle, size_t *count) |
| { |
| assert(handle); |
| |
| status_t status = kStatus_Success; |
| |
| if (handle->state != kFLEXIO_I2S_Busy) |
| { |
| status = kStatus_NoTransferInProgress; |
| } |
| else |
| { |
| *count = handle->transferSize[handle->queueDriver] - |
| (uint32_t)handle->nbytes * |
| EDMA_GetRemainingMajorLoopCount(handle->dmaHandle->base, handle->dmaHandle->channel); |
| } |
| |
| return status; |
| } |