599 lines
22 KiB
C
599 lines
22 KiB
C
/*
|
|
* Copyright (c) 2016, Freescale Semiconductor, Inc.
|
|
* Copyright 2017-2020 NXP
|
|
* All rights reserved.
|
|
*
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include "fsl_spdif_edma.h"
|
|
|
|
/* Component ID definition, used by tools. */
|
|
#ifndef FSL_COMPONENT_ID
|
|
#define FSL_COMPONENT_ID "platform.drivers.spdif_edma"
|
|
#endif
|
|
|
|
/*******************************************************************************
|
|
* Definitations
|
|
******************************************************************************/
|
|
/* Used for 32byte aligned */
|
|
#define STCD_ADDR(address) (edma_tcd_t *)(((uint32_t)(address) + 32U) & ~0x1FU)
|
|
|
|
/*<! Structure definition for uart_edma_private_handle_t. The structure is private. */
|
|
typedef struct _spdif_edma_private_handle
|
|
{
|
|
SPDIF_Type *base;
|
|
spdif_edma_handle_t *handle;
|
|
} spdif_edma_private_handle_t;
|
|
|
|
/*!
|
|
* @brief Used for conversion between `void*` and `uint32_t`.
|
|
*/
|
|
typedef union pvoid_to_u32
|
|
{
|
|
void *pvoid;
|
|
uint32_t u32;
|
|
} pvoid_to_u32_t;
|
|
|
|
/*! @brief spdif edma transfer state. */
|
|
enum
|
|
{
|
|
kSPDIF_Busy = 0x0U, /*!< SPDIF is busy */
|
|
kSPDIF_Idle, /*!< Transfer is done. */
|
|
};
|
|
|
|
/*<! Private handle only used for internally. */
|
|
static spdif_edma_private_handle_t s_edmaPrivateHandle[FSL_FEATURE_SOC_SPDIF_COUNT][2];
|
|
static uint8_t s_spdif_tx_watermark[4] = {16, 12, 8, 4};
|
|
static uint8_t s_spdif_rx_watermark[4] = {1, 4, 8, 16};
|
|
|
|
/*******************************************************************************
|
|
* Prototypes
|
|
******************************************************************************/
|
|
/*!
|
|
* @brief Submit SPDIF tcds to EDMA.
|
|
*
|
|
* @param base SPDIF base pointer.
|
|
*/
|
|
static status_t SPDIF_SubmitTransfer(edma_handle_t *handle,
|
|
const edma_transfer_config_t *config,
|
|
uint32_t rightChannel);
|
|
|
|
/*!
|
|
* @brief SPDIF EDMA callback for send.
|
|
*
|
|
* @param handle pointer to spdif_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 SPDIF_TxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds);
|
|
|
|
/*!
|
|
* @brief SPDIF EDMA callback for receive.
|
|
*
|
|
* @param handle pointer to spdif_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 SPDIF_RxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds);
|
|
|
|
/*******************************************************************************
|
|
* Code
|
|
******************************************************************************/
|
|
static void SPDIF_TxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds)
|
|
{
|
|
spdif_edma_private_handle_t *privHandle = (spdif_edma_private_handle_t *)userData;
|
|
spdif_edma_handle_t *spdifHandle = privHandle->handle;
|
|
|
|
/* If finished a block, call the callback function */
|
|
(void)memset(&spdifHandle->spdifQueue[spdifHandle->queueDriver], 0, sizeof(spdif_edma_transfer_t));
|
|
spdifHandle->queueDriver = (spdifHandle->queueDriver + 0x01U) % SPDIF_XFER_QUEUE_SIZE;
|
|
if (spdifHandle->callback != NULL)
|
|
{
|
|
(spdifHandle->callback)(privHandle->base, spdifHandle, kStatus_SPDIF_TxIdle, spdifHandle->userData);
|
|
}
|
|
|
|
/* If all data finished, just stop the transfer */
|
|
if (spdifHandle->spdifQueue[spdifHandle->queueDriver].rightData == NULL)
|
|
{
|
|
SPDIF_TransferAbortSendEDMA(privHandle->base, spdifHandle);
|
|
}
|
|
}
|
|
|
|
static void SPDIF_RxEDMACallback(edma_handle_t *handle, void *userData, bool done, uint32_t tcds)
|
|
{
|
|
spdif_edma_private_handle_t *privHandle = (spdif_edma_private_handle_t *)userData;
|
|
spdif_edma_handle_t *spdifHandle = privHandle->handle;
|
|
|
|
/* If finished a block, call the callback function */
|
|
(void)memset(&spdifHandle->spdifQueue[spdifHandle->queueDriver], 0, sizeof(spdif_edma_transfer_t));
|
|
spdifHandle->queueDriver = (spdifHandle->queueDriver + 0x01U) % SPDIF_XFER_QUEUE_SIZE;
|
|
if (spdifHandle->callback != NULL)
|
|
{
|
|
(spdifHandle->callback)(privHandle->base, spdifHandle, kStatus_SPDIF_RxIdle, spdifHandle->userData);
|
|
}
|
|
|
|
/* If all data finished, just stop the transfer */
|
|
if (spdifHandle->spdifQueue[spdifHandle->queueDriver].rightData == NULL)
|
|
{
|
|
SPDIF_TransferAbortReceiveEDMA(privHandle->base, spdifHandle);
|
|
}
|
|
}
|
|
|
|
static status_t SPDIF_SubmitTransfer(edma_handle_t *handle, const edma_transfer_config_t *config, uint32_t rightChannel)
|
|
{
|
|
edma_tcd_t *tcdRegs = (edma_tcd_t *)(uint32_t)&handle->base->TCD[handle->channel];
|
|
uint32_t primask;
|
|
uint16_t csr;
|
|
int8_t currentTcd;
|
|
int8_t previousTcd;
|
|
int8_t nextTcd;
|
|
int8_t tcdUsed = handle->tcdUsed;
|
|
int8_t tcdSize = handle->tcdSize;
|
|
|
|
/* Check if tcd pool is full. */
|
|
primask = DisableGlobalIRQ();
|
|
if (tcdUsed >= tcdSize)
|
|
{
|
|
EnableGlobalIRQ(primask);
|
|
|
|
return kStatus_EDMA_QueueFull;
|
|
}
|
|
currentTcd = handle->tail;
|
|
handle->tcdUsed++;
|
|
/* Calculate index of next TCD */
|
|
nextTcd = currentTcd + 0x01;
|
|
if (nextTcd == handle->tcdSize)
|
|
{
|
|
nextTcd = 0x00;
|
|
}
|
|
/* Advance queue tail index */
|
|
handle->tail = nextTcd;
|
|
EnableGlobalIRQ(primask);
|
|
/* Calculate index of previous TCD */
|
|
previousTcd = (currentTcd != 0x00) ? (currentTcd - 0x01) : (handle->tcdSize - 0x01);
|
|
/* Configure current TCD block. */
|
|
EDMA_TcdReset(&handle->tcdPool[currentTcd]);
|
|
EDMA_TcdSetTransferConfig(&handle->tcdPool[currentTcd], config, NULL);
|
|
/* Set channel link */
|
|
EDMA_TcdSetChannelLink(&handle->tcdPool[currentTcd], kEDMA_MinorLink, rightChannel);
|
|
EDMA_TcdSetChannelLink(&handle->tcdPool[currentTcd], kEDMA_MajorLink, rightChannel);
|
|
/* Enable major interrupt */
|
|
handle->tcdPool[currentTcd].CSR |= DMA_CSR_INTMAJOR_MASK;
|
|
/* Link current TCD with next TCD for identification of current TCD */
|
|
handle->tcdPool[currentTcd].DLAST_SGA = (uint32_t)&handle->tcdPool[nextTcd];
|
|
/* Chain from previous descriptor unless tcd pool size is 1(this descriptor is its own predecessor). */
|
|
if (currentTcd != previousTcd)
|
|
{
|
|
/* Enable scatter/gather feature in the previous TCD block. */
|
|
csr = (handle->tcdPool[previousTcd].CSR | (uint16_t)DMA_CSR_ESG_MASK) & ~(uint16_t)DMA_CSR_DREQ_MASK;
|
|
handle->tcdPool[previousTcd].CSR = csr;
|
|
/*
|
|
Check if the TCD block in the registers is the previous one (points to current TCD block). It
|
|
is used to check if the previous TCD linked has been loaded in TCD register. If so, it need to
|
|
link the TCD register in case link the current TCD with the dead chain when TCD loading occurs
|
|
before link the previous TCD block.
|
|
*/
|
|
if (tcdRegs->DLAST_SGA == (uint32_t)&handle->tcdPool[currentTcd])
|
|
{
|
|
/* Enable scatter/gather also in the TCD registers. */
|
|
csr = (tcdRegs->CSR | (uint16_t)DMA_CSR_ESG_MASK) & ~(uint16_t)DMA_CSR_DREQ_MASK;
|
|
/* Must write the CSR register one-time, because the transfer maybe finished anytime. */
|
|
tcdRegs->CSR = csr;
|
|
/*
|
|
It is very important to check the ESG bit!
|
|
Because this hardware design: if DONE bit is set, the ESG bit can not be set. So it can
|
|
be used to check if the dynamic TCD link operation is successful. If ESG bit is not set
|
|
and the DLAST_SGA is not the next TCD address(it means the dynamic TCD link succeed and
|
|
the current TCD block has been loaded into TCD registers), it means transfer finished
|
|
and TCD link operation fail, so must install TCD content into TCD registers and enable
|
|
transfer again. And if ESG is set, it means transfer has notfinished, so TCD dynamic
|
|
link succeed.
|
|
*/
|
|
if ((tcdRegs->CSR & DMA_CSR_ESG_MASK) != 0x00U)
|
|
{
|
|
return kStatus_Success;
|
|
}
|
|
/*
|
|
Check whether the current TCD block is already loaded in the TCD registers. It is another
|
|
condition when ESG bit is not set: it means the dynamic TCD link succeed and the current
|
|
TCD block has been loaded into TCD registers.
|
|
*/
|
|
if (tcdRegs->DLAST_SGA == (uint32_t)&handle->tcdPool[nextTcd])
|
|
{
|
|
return kStatus_Success;
|
|
}
|
|
/*
|
|
If go to this, means the previous transfer finished, and the DONE bit is set.
|
|
So shall configure TCD registers.
|
|
*/
|
|
}
|
|
else if (tcdRegs->DLAST_SGA != 0x00U)
|
|
{
|
|
/* The current TCD block has been linked successfully. */
|
|
return kStatus_Success;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
DLAST_SGA is 0 and it means the first submit transfer, so shall configure
|
|
TCD registers.
|
|
*/
|
|
}
|
|
}
|
|
/* There is no live chain, TCD block need to be installed in TCD registers. */
|
|
EDMA_InstallTCD(handle->base, handle->channel, &handle->tcdPool[currentTcd]);
|
|
/* Enable channel request again. */
|
|
if ((handle->flags & 0x80U) != 0x00U)
|
|
{
|
|
handle->base->SERQ = DMA_SERQ_SERQ(handle->channel);
|
|
}
|
|
else
|
|
{
|
|
; /* Intentional empty */
|
|
}
|
|
|
|
return kStatus_Success;
|
|
}
|
|
|
|
/*!
|
|
* brief Initializes the SPDIF eDMA handle.
|
|
*
|
|
* This function initializes the SPDIF master DMA handle, which can be used for other SPDIF master transactional APIs.
|
|
* Usually, for a specified SPDIF instance, call this API once to get the initialized handle.
|
|
*
|
|
* param base SPDIF base pointer.
|
|
* param handle SPDIF eDMA handle pointer.
|
|
* param base SPDIF peripheral base address.
|
|
* param callback Pointer to user callback function.
|
|
* param userData User parameter passed to the callback function.
|
|
* param dmaLeftHandle eDMA handle pointer for left channel, this handle shall be static allocated by users.
|
|
* param dmaRightHandle eDMA handle pointer for right channel, this handle shall be static allocated by users.
|
|
*/
|
|
void SPDIF_TransferTxCreateHandleEDMA(SPDIF_Type *base,
|
|
spdif_edma_handle_t *handle,
|
|
spdif_edma_callback_t callback,
|
|
void *userData,
|
|
edma_handle_t *dmaLeftHandle,
|
|
edma_handle_t *dmaRightHandle)
|
|
{
|
|
assert(handle != NULL);
|
|
assert(dmaLeftHandle != NULL);
|
|
assert(dmaRightHandle != NULL);
|
|
|
|
uint32_t instance = SPDIF_GetInstance(base);
|
|
|
|
/* Zero the handle */
|
|
(void)memset(handle, 0, sizeof(*handle));
|
|
|
|
/* Set spdif base to handle */
|
|
handle->dmaLeftHandle = dmaLeftHandle;
|
|
handle->dmaRightHandle = dmaRightHandle;
|
|
handle->callback = callback;
|
|
handle->userData = userData;
|
|
handle->count =
|
|
s_spdif_tx_watermark[(base->SCR & SPDIF_SCR_TXFIFOEMPTY_SEL_MASK) >> SPDIF_SCR_TXFIFOEMPTY_SEL_SHIFT];
|
|
|
|
/* Set SPDIF state to idle */
|
|
handle->state = kSPDIF_Idle;
|
|
|
|
s_edmaPrivateHandle[instance][0].base = base;
|
|
s_edmaPrivateHandle[instance][0].handle = handle;
|
|
|
|
/* Need to use scatter gather */
|
|
EDMA_InstallTCDMemory(dmaLeftHandle, STCD_ADDR(handle->leftTcd), SPDIF_XFER_QUEUE_SIZE);
|
|
EDMA_InstallTCDMemory(dmaRightHandle, STCD_ADDR(handle->rightTcd), SPDIF_XFER_QUEUE_SIZE);
|
|
|
|
/* Install callback for Tx dma channel, only right channel finished, a transfer finished */
|
|
EDMA_SetCallback(dmaRightHandle, SPDIF_TxEDMACallback, &s_edmaPrivateHandle[instance][0]);
|
|
}
|
|
|
|
/*!
|
|
* brief Initializes the SPDIF Rx eDMA handle.
|
|
*
|
|
* This function initializes the SPDIF slave DMA handle, which can be used for other SPDIF master transactional APIs.
|
|
* Usually, for a specified SPDIF instance, call this API once to get the initialized handle.
|
|
*
|
|
* param base SPDIF base pointer.
|
|
* param handle SPDIF eDMA handle pointer.
|
|
* param base SPDIF peripheral base address.
|
|
* param callback Pointer to user callback function.
|
|
* param userData User parameter passed to the callback function.
|
|
* param dmaLeftHandle eDMA handle pointer for left channel, this handle shall be static allocated by users.
|
|
* param dmaRightHandle eDMA handle pointer for right channel, this handle shall be static allocated by users.
|
|
*/
|
|
void SPDIF_TransferRxCreateHandleEDMA(SPDIF_Type *base,
|
|
spdif_edma_handle_t *handle,
|
|
spdif_edma_callback_t callback,
|
|
void *userData,
|
|
edma_handle_t *dmaLeftHandle,
|
|
edma_handle_t *dmaRightHandle)
|
|
{
|
|
assert(handle != NULL);
|
|
assert(dmaLeftHandle != NULL);
|
|
assert(dmaRightHandle != NULL);
|
|
|
|
uint32_t instance = SPDIF_GetInstance(base);
|
|
|
|
/* Zero the handle */
|
|
(void)memset(handle, 0, sizeof(*handle));
|
|
|
|
/* Set spdif base to handle */
|
|
handle->dmaLeftHandle = dmaLeftHandle;
|
|
handle->dmaRightHandle = dmaRightHandle;
|
|
handle->callback = callback;
|
|
handle->userData = userData;
|
|
handle->count = s_spdif_rx_watermark[(base->SCR & SPDIF_SCR_RXFIFOFULL_SEL_MASK) >> SPDIF_SCR_RXFIFOFULL_SEL_SHIFT];
|
|
|
|
/* Set SPDIF state to idle */
|
|
handle->state = kSPDIF_Idle;
|
|
|
|
s_edmaPrivateHandle[instance][1].base = base;
|
|
s_edmaPrivateHandle[instance][1].handle = handle;
|
|
|
|
/* Need to use scatter gather */
|
|
EDMA_InstallTCDMemory(dmaLeftHandle, STCD_ADDR(handle->leftTcd), SPDIF_XFER_QUEUE_SIZE);
|
|
EDMA_InstallTCDMemory(dmaRightHandle, STCD_ADDR(handle->rightTcd), SPDIF_XFER_QUEUE_SIZE);
|
|
|
|
/* Install callback for Tx dma channel */
|
|
EDMA_SetCallback(dmaRightHandle, SPDIF_RxEDMACallback, &s_edmaPrivateHandle[instance][1]);
|
|
}
|
|
|
|
/*!
|
|
* brief Performs a non-blocking SPDIF transfer using DMA.
|
|
*
|
|
* note This interface returns immediately after the transfer initiates. Call
|
|
* SPDIF_GetTransferStatus to poll the transfer status and check whether the SPDIF transfer is finished.
|
|
*
|
|
* param base SPDIF base pointer.
|
|
* param handle SPDIF eDMA handle pointer.
|
|
* param xfer Pointer to the DMA transfer structure.
|
|
* retval kStatus_Success Start a SPDIF eDMA send successfully.
|
|
* retval kStatus_InvalidArgument The input argument is invalid.
|
|
* retval kStatus_TxBusy SPDIF is busy sending data.
|
|
*/
|
|
status_t SPDIF_TransferSendEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle, spdif_edma_transfer_t *xfer)
|
|
{
|
|
assert(handle != NULL);
|
|
assert(xfer != NULL);
|
|
|
|
pvoid_to_u32_t destAddr;
|
|
edma_transfer_config_t config = {0};
|
|
destAddr.u32 = SPDIF_TxGetLeftDataRegisterAddress(base);
|
|
|
|
/* Check if input parameter invalid */
|
|
if ((xfer->leftData == NULL) || (xfer->dataSize == 0U) || (xfer->rightData == NULL))
|
|
{
|
|
return kStatus_InvalidArgument;
|
|
}
|
|
|
|
if ((handle->spdifQueue[handle->queueUser].leftData != NULL) ||
|
|
(handle->spdifQueue[handle->queueUser].rightData != NULL))
|
|
{
|
|
return kStatus_SPDIF_QueueFull;
|
|
}
|
|
|
|
/* Change the state of handle */
|
|
handle->state = kSPDIF_Busy;
|
|
|
|
/* Update the queue state */
|
|
handle->transferSize[handle->queueUser] = xfer->dataSize;
|
|
handle->spdifQueue[handle->queueUser].leftData = xfer->leftData;
|
|
handle->spdifQueue[handle->queueUser].dataSize = xfer->dataSize;
|
|
handle->spdifQueue[handle->queueUser].rightData = xfer->rightData;
|
|
handle->queueUser = (handle->queueUser + 0x01U) % SPDIF_XFER_QUEUE_SIZE;
|
|
|
|
/* Store the initially configured eDMA minor byte transfer count into the SPDIF handle */
|
|
handle->nbytes = handle->count * 8U;
|
|
|
|
/* Prepare edma configure */
|
|
EDMA_PrepareTransfer(&config, xfer->leftData, 4U, destAddr.pvoid, 4U, (uint32_t)handle->count * 4U, xfer->dataSize,
|
|
kEDMA_MemoryToPeripheral);
|
|
(void)SPDIF_SubmitTransfer(handle->dmaLeftHandle, &config, handle->dmaRightHandle->channel);
|
|
|
|
/* Prepare right channel */
|
|
destAddr.u32 = SPDIF_TxGetRightDataRegisterAddress(base);
|
|
EDMA_PrepareTransfer(&config, xfer->rightData, 4U, destAddr.pvoid, 4U, (uint32_t)handle->count * 4U, xfer->dataSize,
|
|
kEDMA_MemoryToPeripheral);
|
|
(void)EDMA_SubmitTransfer(handle->dmaRightHandle, &config);
|
|
|
|
/* Start DMA transfer */
|
|
EDMA_StartTransfer(handle->dmaLeftHandle);
|
|
EDMA_StartTransfer(handle->dmaRightHandle);
|
|
|
|
/* Enable DMA enable bit */
|
|
SPDIF_EnableDMA(base, kSPDIF_TxDMAEnable, true);
|
|
|
|
/* Enable SPDIF Tx clock */
|
|
SPDIF_TxEnable(base, true);
|
|
|
|
return kStatus_Success;
|
|
}
|
|
|
|
/*!
|
|
* brief Performs a non-blocking SPDIF receive using eDMA.
|
|
*
|
|
* note This interface returns immediately after the transfer initiates. Call
|
|
* the SPDIF_GetReceiveRemainingBytes to poll the transfer status and check whether the SPDIF transfer is finished.
|
|
*
|
|
* param base SPDIF base pointer
|
|
* param handle SPDIF eDMA handle pointer.
|
|
* param xfer Pointer to DMA transfer structure.
|
|
* retval kStatus_Success Start a SPDIF eDMA receive successfully.
|
|
* retval kStatus_InvalidArgument The input argument is invalid.
|
|
* retval kStatus_RxBusy SPDIF is busy receiving data.
|
|
*/
|
|
status_t SPDIF_TransferReceiveEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle, spdif_edma_transfer_t *xfer)
|
|
{
|
|
assert(handle != NULL);
|
|
assert(xfer != NULL);
|
|
|
|
pvoid_to_u32_t srcAddr;
|
|
edma_transfer_config_t config = {0};
|
|
srcAddr.u32 = SPDIF_RxGetLeftDataRegisterAddress(base);
|
|
|
|
/* Check if input parameter invalid */
|
|
if ((xfer->leftData == NULL) || (xfer->dataSize == 0U) || (xfer->rightData == NULL))
|
|
{
|
|
return kStatus_InvalidArgument;
|
|
}
|
|
|
|
if ((handle->spdifQueue[handle->queueUser].leftData != NULL) ||
|
|
(handle->spdifQueue[handle->queueUser].rightData != NULL))
|
|
{
|
|
return kStatus_SPDIF_QueueFull;
|
|
}
|
|
|
|
/* Change the state of handle */
|
|
handle->state = kSPDIF_Busy;
|
|
|
|
/* Update the queue state */
|
|
handle->transferSize[handle->queueUser] = xfer->dataSize;
|
|
handle->spdifQueue[handle->queueUser].leftData = xfer->leftData;
|
|
handle->spdifQueue[handle->queueUser].dataSize = xfer->dataSize;
|
|
handle->spdifQueue[handle->queueUser].rightData = xfer->rightData;
|
|
handle->queueUser = (handle->queueUser + 0x01U) % SPDIF_XFER_QUEUE_SIZE;
|
|
|
|
/* Store the initially configured eDMA minor byte transfer count into the SPDIF handle */
|
|
handle->nbytes = handle->count * 8U;
|
|
|
|
/* Prepare edma configure */
|
|
EDMA_PrepareTransfer(&config, srcAddr.pvoid, 4U, xfer->leftData, 4U, (uint32_t)handle->count * 4U, xfer->dataSize,
|
|
kEDMA_PeripheralToMemory);
|
|
/* Use specific submit function to enable channel link */
|
|
(void)SPDIF_SubmitTransfer(handle->dmaLeftHandle, &config, handle->dmaRightHandle->channel);
|
|
|
|
/* Prepare right channel */
|
|
srcAddr.u32 = SPDIF_RxGetRightDataRegisterAddress(base);
|
|
EDMA_PrepareTransfer(&config, srcAddr.pvoid, 4U, xfer->rightData, 4U, (uint32_t)handle->count * 4U, xfer->dataSize,
|
|
kEDMA_PeripheralToMemory);
|
|
(void)EDMA_SubmitTransfer(handle->dmaRightHandle, &config);
|
|
|
|
/* Start DMA transfer */
|
|
EDMA_StartTransfer(handle->dmaLeftHandle);
|
|
EDMA_StartTransfer(handle->dmaRightHandle);
|
|
|
|
/* Enable DMA enable bit */
|
|
SPDIF_EnableDMA(base, kSPDIF_RxDMAEnable, true);
|
|
|
|
/* Enable SPDIF Rx clock */
|
|
SPDIF_RxEnable(base, true);
|
|
|
|
return kStatus_Success;
|
|
}
|
|
|
|
/*!
|
|
* brief Aborts a SPDIF transfer using eDMA.
|
|
*
|
|
* param base SPDIF base pointer.
|
|
* param handle SPDIF eDMA handle pointer.
|
|
*/
|
|
void SPDIF_TransferAbortSendEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle)
|
|
{
|
|
assert(handle != NULL);
|
|
|
|
/* Disable dma */
|
|
EDMA_AbortTransfer(handle->dmaLeftHandle);
|
|
EDMA_AbortTransfer(handle->dmaRightHandle);
|
|
|
|
/* Disable DMA enable bit */
|
|
SPDIF_EnableDMA(base, kSPDIF_TxDMAEnable, false);
|
|
|
|
/* Set internal state */
|
|
(void)memset(handle->spdifQueue, 0, sizeof(handle->spdifQueue));
|
|
(void)memset(handle->transferSize, 0, sizeof(handle->transferSize));
|
|
handle->queueUser = 0U;
|
|
handle->queueDriver = 0U;
|
|
|
|
/* Set the handle state */
|
|
handle->state = kSPDIF_Idle;
|
|
}
|
|
|
|
/*!
|
|
* brief Aborts a SPDIF receive using eDMA.
|
|
*
|
|
* param base SPDIF base pointer
|
|
* param handle SPDIF eDMA handle pointer.
|
|
*/
|
|
void SPDIF_TransferAbortReceiveEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle)
|
|
{
|
|
assert(handle != NULL);
|
|
|
|
/* Disable dma */
|
|
EDMA_AbortTransfer(handle->dmaLeftHandle);
|
|
EDMA_AbortTransfer(handle->dmaRightHandle);
|
|
|
|
/* Disable DMA enable bit */
|
|
SPDIF_EnableDMA(base, kSPDIF_RxDMAEnable, false);
|
|
|
|
/* Set internal state */
|
|
(void)memset(handle->spdifQueue, 0, sizeof(handle->spdifQueue));
|
|
(void)memset(handle->transferSize, 0, sizeof(handle->transferSize));
|
|
handle->queueUser = 0U;
|
|
handle->queueDriver = 0U;
|
|
|
|
/* Set the handle state */
|
|
handle->state = kSPDIF_Idle;
|
|
}
|
|
|
|
/*!
|
|
* brief Gets byte count sent by SPDIF.
|
|
*
|
|
* param base SPDIF base pointer.
|
|
* param handle SPDIF eDMA handle pointer.
|
|
* param count Bytes count sent by SPDIF.
|
|
* retval kStatus_Success Succeed get the transfer count.
|
|
* retval kStatus_NoTransferInProgress There is no non-blocking transaction in progress.
|
|
*/
|
|
status_t SPDIF_TransferGetSendCountEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle, size_t *count)
|
|
{
|
|
assert(handle != NULL);
|
|
|
|
status_t status = kStatus_Success;
|
|
|
|
if (handle->state != (uint32_t)kSPDIF_Busy)
|
|
{
|
|
status = kStatus_NoTransferInProgress;
|
|
}
|
|
else
|
|
{
|
|
*count = (handle->transferSize[handle->queueDriver] -
|
|
(uint32_t)handle->nbytes *
|
|
EDMA_GetRemainingMajorLoopCount(handle->dmaRightHandle->base, handle->dmaRightHandle->channel));
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/*!
|
|
* brief Gets byte count received by SPDIF.
|
|
*
|
|
* param base SPDIF base pointer
|
|
* param handle SPDIF eDMA handle pointer.
|
|
* param count Bytes count received by SPDIF.
|
|
* retval kStatus_Success Succeed get the transfer count.
|
|
* retval kStatus_NoTransferInProgress There is no non-blocking transaction in progress.
|
|
*/
|
|
status_t SPDIF_TransferGetReceiveCountEDMA(SPDIF_Type *base, spdif_edma_handle_t *handle, size_t *count)
|
|
{
|
|
assert(handle != NULL);
|
|
|
|
status_t status = kStatus_Success;
|
|
|
|
if (handle->state != (uint32_t)kSPDIF_Busy)
|
|
{
|
|
status = kStatus_NoTransferInProgress;
|
|
}
|
|
else
|
|
{
|
|
*count = (handle->transferSize[handle->queueDriver] -
|
|
(uint32_t)handle->nbytes *
|
|
EDMA_GetRemainingMajorLoopCount(handle->dmaRightHandle->base, handle->dmaRightHandle->channel));
|
|
}
|
|
|
|
return status;
|
|
}
|