diff options
Diffstat (limited to 'sound/soc/davinci/davinci-mcasp.c')
| -rw-r--r-- | sound/soc/davinci/davinci-mcasp.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 9454d123f4bb..196158f2d1c4 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -529,8 +529,19 @@ static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream, /* AFIFO is not in use */ if (!numevt) { /* Configure the burst size for platform drivers */ - dma_params->fifo_level = 0; - dma_data->maxburst = 0; + if (active_serializers > 1) { + /* + * If more than one serializers are in use we have one + * DMA request to provide data for all serializers. + * For example if three serializers are enabled the DMA + * need to transfer three words per DMA request. + */ + dma_params->fifo_level = active_serializers; + dma_data->maxburst = active_serializers; + } else { + dma_params->fifo_level = 0; + dma_data->maxburst = 0; + } return 0; } @@ -558,6 +569,8 @@ static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream, mcasp_mod_bits(mcasp, reg, NUMEVT(numevt), NUMEVT_MASK); /* Configure the burst size for platform drivers */ + if (numevt == 1) + numevt = 0; dma_params->fifo_level = numevt; dma_data->maxburst = numevt; |