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comp: use comp_sample_bytes() to set DMA transfer size. 

Use comp_sample_bytes() to set DMA transfer size in DAI component and
comment why host always copies using word size transfers.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
This commit is contained in:
Liam Girdwood 2017-11-17 15:49:26 +00:00
parent 094153aece
commit c3a01f209b
2 changed files with 6 additions and 5 deletions
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8
src/audio/dai.c
View File

@ -264,8 +264,8 @@ static int dai_playback_params(struct comp_dev *dev)
/* set up DMA configuration */
config->direction = DMA_DIR_MEM_TO_DEV;
config->src_width = sizeof(uint32_t);
config->dest_width = sizeof(uint32_t);
config->src_width = comp_sample_bytes(dev);
config->dest_width = comp_sample_bytes(dev);
config->cyclic = 1;
config->dest_dev = dd->dai->plat_data.fifo[0].handshake;
@ -331,8 +331,8 @@ static int dai_capture_params(struct comp_dev *dev)
/* set up DMA configuration */
config->direction = DMA_DIR_DEV_TO_MEM;
config->src_width = sizeof(uint32_t);
config->dest_width = sizeof(uint32_t);
config->src_width = comp_sample_bytes(dev);
config->dest_width = comp_sample_bytes(dev);
config->cyclic = 1;
config->src_dev = dd->dai->plat_data.fifo[1].handshake;

3
src/audio/host.c
View File

@ -441,7 +441,8 @@ static int host_params(struct comp_dev *dev)
if (err < 0)
return err;
/* set up DMA configuration */
/* set up DMA configuration - copy in words for all formats as
this is most optimal for memory <-> memory copies. */
config->src_width = sizeof(uint32_t);
config->dest_width = sizeof(uint32_t);
config->cyclic = 0;