diff options
Diffstat (limited to 'sound/soc/fsl/fsl_asrc_dma.c')
| -rw-r--r-- | sound/soc/fsl/fsl_asrc_dma.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c index d6146de9acd2..ece130f59d15 100644 --- a/sound/soc/fsl/fsl_asrc_dma.c +++ b/sound/soc/fsl/fsl_asrc_dma.c @@ -197,21 +197,34 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component, dma_cap_set(DMA_SLAVE, mask); dma_cap_set(DMA_CYCLIC, mask); - /* Get DMA request of Back-End */ - tmp_chan = dma_request_slave_channel(dev_be, tx ? "tx" : "rx"); - tmp_data = tmp_chan->private; - pair->dma_data.dma_request = tmp_data->dma_request; - dma_release_channel(tmp_chan); - - /* Get DMA request of Front-End */ - tmp_chan = fsl_asrc_get_dma_channel(pair, dir); - tmp_data = tmp_chan->private; - pair->dma_data.dma_request2 = tmp_data->dma_request; - pair->dma_data.peripheral_type = tmp_data->peripheral_type; - pair->dma_data.priority = tmp_data->priority; - dma_release_channel(tmp_chan); + /* + * An EDMA DEV_TO_DEV channel is fixed and bound with DMA event of each + * peripheral, unlike SDMA channel that is allocated dynamically. So no + * need to configure dma_request and dma_request2, but get dma_chan via + * dma_request_slave_channel directly with dma name of Front-End device + */ + if (!asrc_priv->soc->use_edma) { + /* Get DMA request of Back-End */ + tmp_chan = dma_request_slave_channel(dev_be, tx ? "tx" : "rx"); + tmp_data = tmp_chan->private; + pair->dma_data.dma_request = tmp_data->dma_request; + dma_release_channel(tmp_chan); + + /* Get DMA request of Front-End */ + tmp_chan = fsl_asrc_get_dma_channel(pair, dir); + tmp_data = tmp_chan->private; + pair->dma_data.dma_request2 = tmp_data->dma_request; + pair->dma_data.peripheral_type = tmp_data->peripheral_type; + pair->dma_data.priority = tmp_data->priority; + dma_release_channel(tmp_chan); + + pair->dma_chan[dir] = + dma_request_channel(mask, filter, &pair->dma_data); + } else { + pair->dma_chan[dir] = + fsl_asrc_get_dma_channel(pair, dir); + } - pair->dma_chan[dir] = dma_request_channel(mask, filter, &pair->dma_data); if (!pair->dma_chan[dir]) { dev_err(dev, "failed to request DMA channel for Back-End\n"); return -EINVAL; @@ -428,7 +441,6 @@ static void fsl_asrc_dma_pcm_free(struct snd_soc_component *component, struct snd_soc_component_driver fsl_asrc_component = { .name = DRV_NAME, - .ioctl = snd_soc_pcm_lib_ioctl, .hw_params = fsl_asrc_dma_hw_params, .hw_free = fsl_asrc_dma_hw_free, .trigger = fsl_asrc_dma_trigger, |