[alsa-devel] [RFC 02/11] ASoC: Add dai_ops to set the stream tag.

[Subhransu S. Prusty]

On Tue, Jul 05, 2016 at 02:54:03PM +0200, Mark Brown wrote:
> On Thu, Jun 30, 2016 at 02:29:07PM +0530, Subhransu S. Prusty wrote:
> 
> > Each DMA channel can be mapped to a stream in HDA. Each stream is mapped
> > uniquely with a stream tag. The stream is programmed in both host and
> > codec. In host the DMA is programmed with this stream tag and based on this
> > DMA picks data from host buffer and puts it onto the link. Similarly the
> > codec converter is programmed with the same stream tag and codec receives
> > packet from the link associated with the stream tag.
> 
> Are these arbatrary tags?  If so why not just pick tags that look like
> normal TDM timeslots?

If I understand correctly, the tag will be programmed in the tx_mask and
all other arguments will not be used.

Regards,
Subhransu


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