Thanks for your answer. See my comments inline
On Thu, Oct 10, 2019 at 2:37 AM Kuninori Morimoto kuninori.morimoto.gx@renesas.com wrote:
Hi Daniel
Do you mean CPU-dummy + dummy-Codec ? But anyway, simple-card/audio-graph DPCM support is very limited. Unfortunately it doesn't have flexibility...
Yes, exactly. I need 1 DAI link with 1 FE + 1 BE for DSP / SOF usecase.
simple-card support it if it needs convert-rate or convert-channels.
Yes, but this is needed for ASRC-like components. I don't think I can abuse this usage for my usecase.
Please check below
static simple_for_each_link(xxx) { ... for_each_child_of_node(node, np) { /* * It is DPCM * if it has many CPUs, * or has convert-xxx property */(1) if (dpcm_selectable && (2) (num > 2 || (3) adata.convert_rate || adata.convert_channels)) ret = func_dpcm(priv, np, codec, li, is_top); ...
(1) : using simple-scu-audio-card (2) : 2 nodes or more (3) : has convert-xxx property
In fact I just need 1 BE DAI link. My use case is with SOF where the FE will be added by topology.
I think I can modify simple-card to do this. Just let me know if you see something obviously wrong on making the simple-card / simple-scu-card handling this case with creating just 1 BE DAI link.
Maybe add a property like "dpcm".