void setup_edma_loop(edma_loop_setup_t *loopSetup)
{
#if 0
#if (defined(__ICCARM__) || defined(__CC_ARM))
loopSetup->dmaChStcd = (edma_software_tcd_t *)mem_align(2 * sizeof(edma_software_tcd_t) * loopSetup->period, 32);
#elif defined(__GNUC__)
loopSetup->dmaChStcd = (edma_software_tcd_t *)memalign(32, 2 * sizeof(edma_software_tcd_t) * loopSetup->period);
#endif
#endif
loopSetup->dmaChStcd = (edma_software_tcd_t *)(((uint32_t)ptcd + 32)& 0xFFFFFFE0);
//printf(" eDMA TCD address is %x, them\r\n", (uint32_t)loopSetup->dmaChStcd);
memset(loopSetup->dmaChStcd, 0, sizeof(edma_software_tcd_t));
EDMA_DRV_RequestChannel(loopSetup->dmaChanNum, loopSetup->chSource, loopSetup->dmaCh);
EDMA_DRV_ConfigLoopTransfer(loopSetup->dmaCh, loopSetup->dmaChStcd, loopSetup->type,
loopSetup->srcAddr, loopSetup->destAddr, loopSetup->size,
loopSetup->watermark, loopSetup->length, loopSetup->period);
if(loopSetup->dmaCallBack != NULL)
{
EDMA_DRV_InstallCallback(loopSetup->dmaCh, loopSetup->dmaCallBack, loopSetup->dmaCh);
}
}
/*FUNCTION**********************************************************************
*
* Function Name : SND_RxConfigDataFormat
* Description : Configure the audio file format in rx soundcard.
* The soundcard includes a controller and a codec. The audio format includes
* sample rate, bit length and so on.
*END**************************************************************************/
snd_status_t SND_RxConfigDataFormat(sound_card_t *card, ctrl_data_format_t *format)
{
audio_controller_t *ctrl = &card->controller;
audio_codec_t *codec = &card->codec;
ctrl->ops->Ctrl_RxConfigDataFormat(ctrl->instance, format);
codec->ops->Codec_ConfigDataFormat(codec->handler, format->mclk, format->sample_rate,
format->bits);
/* Configure dma */
#if USEDMA
audio_buffer_t *buffer = &card->buffer;
uint8_t sample_size = format->bits/8;
uint32_t watermark = ctrl->ops->Ctrl_RxGetWatermark(ctrl->instance);
if((sample_size == 3) || (format->bits & 0x7))
{
sample_size = 4;
}
uint32_t * desAddr = ctrl->ops->Ctrl_RxGetFifoAddr(ctrl->instance,ctrl->fifo_channel);
EDMA_DRV_ConfigLoopTransfer(
&ctrl->dma_channel, ctrl->stcd, kEDMAPeripheralToMemory,
(uint32_t)desAddr, (uint32_t)buffer->buff, sample_size,
sample_size * watermark, AUDIO_BUFFER_SIZE, AUDIO_BUFFER_BLOCK);
EDMA_DRV_StartChannel(&ctrl->dma_channel);
#endif
return kStatus_SND_Success;
}
void setup_edma_loop(edma_loop_setup_t *loopSetup)
{
memset(loopSetup->dmaChStcd, 0, sizeof(edma_software_tcd_t));
EDMA_DRV_RequestChannel(loopSetup->dmaChanNum, loopSetup->chSource, loopSetup->dmaCh);
EDMA_DRV_ConfigLoopTransfer(loopSetup->dmaCh, loopSetup->dmaChStcd, loopSetup->type,
loopSetup->srcAddr, loopSetup->destAddr, loopSetup->size,
loopSetup->watermark, loopSetup->length, loopSetup->period);
if(loopSetup->dmaCallBack != NULL)
{
EDMA_DRV_InstallCallback(loopSetup->dmaCh, loopSetup->dmaCallBack, loopSetup->dmaCh);
}
}
