Hi Sameer
snd_soc_runtime_set_dai_fmt() { ...
if (cpu_dai->component->driver->non_legacy_dai_naming) fmt = inv_dai_fmt; ...}
Above flips polarity for 'cpu_dai' if 'non_legacy_dai_naming' flag is set.
- Hence example mentioned in the commit message does not work if my 'cpu_dai'
driver does not have this flag set.
? Do you want fo flip it ? or don't flip? It is for Codec <-> Codec connection.
- While it is true that we consider reference of 'Codec' mode for simple CPU<->
Codec DAI links, for DPCM this does not seem flexible. For DPCM links CPU and Codec are not directly connected (CPU<->Dummy or Dummy<->Codec). Please consider, for example, if the DAI link has multiple CPU/Codecs. Which 'Codec' reference needs to be considered? Isn't it better if we explicitly mention which DAI we want to operate as 'Master'?
I think Lars-Peter has (had ?) plan for this SND_SOC_DAIFMT_CBx_CFx flag flexibility ? Yes maybe it is needed for multi CPU/Codec system.
Thank you for your help !!
Best regards --- Kuninori Morimoto