Skip to content
Unverified Commit 706e2c88 authored by Shengjiu Wang's avatar Shengjiu Wang Committed by Mark Brown
Browse files

ASoC: fsl_asrc_dma: Reuse the dma channel if available in Back-End



The dma channel has been requested by Back-End cpu dai driver already.
If fsl_asrc_dma requests dma chan with same dma:tx symlink, then
there will be below warning with SDMA.

[   48.174236] fsl-esai-dai 2024000.esai: Cannot create DMA dma:tx symlink

So if we can reuse the dma channel of Back-End, then the issue can be
fixed.

In order to get the dma channel which is already requested in Back-End.
we use the exported two functions (snd_soc_lookup_component_nolocked
and soc_component_to_pcm). If we can get the dma channel, then reuse it,
if can't, then request a new one.

Signed-off-by: default avatarShengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: default avatarNicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/3a79f0442cb4930c633cf72145cfe95a45b9c78e.1591947428.git.shengjiu.wang@nxp.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent a9a21e1e
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment