[RFC]ASoC: SOF: topology: add support for smart amp component

[xiulipan]

Add enumerations to support smart amp and smart amp demux processing
component.

Signed-off-by: Pan Xiuli xiuli.pan@linux.intel.com

[singalsu]

Could the smart amp demux be called just demux or make existing demux capable enough to support smart amp needs? Is there something that makes it special for smart amps only?

[juimonen]

@xiulipan I guess you should add the token parsing also, @bkokoszx same thing topology changes for fw side should be visible...

[juimonen]

but yeah if there are not tokens, then no parsing needed :)

[plbossart]

agree with @singalsu what is so special about the demux here?

[bkokoszx]

@plbossart@singalsu
I've decided to create separate component type for smart amp demux, because it could have some specific algorithm splitting captured stream (from DAI) into feedback stream (stream going back to smart amp component) and host stream (as it is illustrated in thesofproject/sof#1896 (comment)). As I understand, simple DEMUX just copies input to outputs - it does not have any additional processing.

[plbossart]

@plbossart@singalsu
I've decided to create separate component type for smart amp demux, because it could have some specific algorithm splitting captured stream (from DAI) into feedback stream (stream going back to smart amp component) and host stream (as it is illustrated in thesofproject/sof#1896 (comment)). As I understand, simple DEMUX just copies input to outputs - it does not have any additional processing.

what algorithms? if there are algorithms to combine multiple channels, they should be in the smart amp component, I don't get how you would require the processing to be split in two components, with potentially the risk of channel combination being misaligned with what the smart amp processing assumes or does.

[xiulipan]

@plbossart@bkokoszx@singalsu Sorry to forget the [RFC] tag.

@bkokoszx said we will need no other tokens. So no new parse is needed.
I am working on the tplg patch too. Need to clarify if we need two components.

@plbossart Do we need a ABI for change like this?

[plbossart]

moving this PR to the 'Unclear' bucket since I just don't understand the directions

@lbetlej you may want to chime in on why we need a different demux?

[plbossart]

closing since there's been no activity in 27 days.