[alsa-devel] [PATCH v4 1/7] ASoC: hda - add ASoC HDA codec match function

[Mark Brown]

On Tue, May 26, 2015 at 07:24:03AM +0200, Takashi Iwai wrote:
> Mark Brown wrote:
> > On Mon, May 25, 2015 at 01:55:59PM +0200, Takashi Iwai wrote:

> > > Once when we get the common criteria for matching (both for asoc and
> > > legacy), we can move to the unified match method.

> > I really don't understand this idea that we need to work out what the
> > common criteria for matching are, HDA is an enumerable bus isn't it?

> The common match method *does* exist.  It's just shifted to two parts,
> one for ASoC and one for legacy, because of two different objects.

What are these objects supposed to be then and why does the bus for HDA
CODECs know about the differences between them?  They're both called HDA
CODECs which might lead one to think that they are supposed to represent
the same thing.

> > I'm also wondering how this interacts with the Tegra HDA device by the
> > way...

> It's a part of HDA legacy.  No difference from any other HDA devices.
> What's the problem with Tegra?

People keep talking about PCI as being a differentator here, though
apparently the Intel systems are all PCI so perhaps not.
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