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dai: dma: add dma buffer alignment in dai_params() 

Add dw dma buffer alignment in order to provide the
same buffer alignment as in the host side. Without
alignment it may appear mismatch between host and
dai buffer in simple pass-through pipeline (host->dai).

Signed-off-by: Bartosz Kokoszko <bartoszx.kokoszko@linux.intel.com>
This commit is contained in:
Bartosz Kokoszko 2019-07-21 12:12:10 +02:00 committed by Tomasz Lauda
parent 5449dc2a30
commit e36f584d0c
1 changed files with 11 additions and 1 deletions
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12
src/audio/dai.c
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@ -350,6 +350,8 @@ static int dai_params(struct comp_dev *dev)
struct dai_data *dd = comp_get_drvdata(dev);
struct sof_ipc_comp_config *dconfig = COMP_GET_CONFIG(dev);
uint32_t period_bytes;
uint32_t align;
int err;
trace_dai_with_ids(dev, "dai_params()");
@ -378,7 +380,15 @@ static int dai_params(struct comp_dev *dev)
return -EINVAL;
}
period_bytes = dev->frames * dd->frame_bytes;
err = dma_get_attribute(dd->dma, DMA_ATTR_BUFFER_ALIGNMENT, &align);
if (err < 0) {
trace_dai_error("dai_params(): could not get dma buffer "
"alignment");
return err;
}
period_bytes = ALIGN_UP(dev->frames * dd->frame_bytes, align);
if (!period_bytes) {
trace_dai_error_with_ids(dev, "dai_params() error: device has "
"no bytes (no frames to copy to sink).");