Hi JiadaYes, this patch is only one of a serial patch set to enable TDM (Ex) Split mode,
Thank you for your feedback
I understand your situation
We have enabled TDM Split and Ex-Split mode in our kernel,First of all, "TDM (Ex) Split mode" is not yet supported.
and SSI(U)'s dma address diffs based on the BUSIF it is using,
so have a single dma data struct per rsnd_ssi will cause issue when
SSI isn't working with BUSIF0.
And unfortunately, your patch is not enough for it.
I guess you enabled it with many local patches,
and posted one of them ?
It is very advanced feature, we need to consider about
channel/sampling rate/data width/settings/address etc etc etc...
Lots of things we need to solve/care !
DMA pointer is one of them.
If we focus only to DMA, your patch is still wrong I think.
"Playback/Capture direction" is not related to this topic.
1 DMA on 1 DAI is enough ?
And we need to update rsnd_gen2_dma_addr() too for DMA address.
Do you have any suggestion to address this issue?I have no idea at this point.
Missing part for TDM (Ex) Split mode is not only DMA pointer.
Why do you want to use it ?
If you want to do is only "use 2 DAIs for playback",
how about to use MIXer ? It is already supported on upstream.