[alsa-devel] [PATCH v2] ASoC: rsnd: enable SRC setting via DT

[Mark Brown]

On Thu, Jul 24, 2014 at 07:08:19PM -0700, Kuninori Morimoto wrote:

> > > >   48kHz   --->      48kHz
> > > >   44.1kHz ---> [SRC] ---> [codec]
> > > >   96kHz   --->

> > > This is something which really should be implemented using the
> > > frameworks (DPCM mainly in this case as previously discussed for this
> > > and other bits of the hardware) rather than with something custom to the
> > > driver - we already have a way of forcing a DAI link into a single
> > > configuration, we should be using it.

> If my understand is correct,
> current upstream code doesn't have above feature at this point,
> and, I can update DPCM feature for it ?

> If yes, and if I want to exchange rate from 96kHz -> 48kHz,
> I can use be->dai_link->be_hw_params_fixup() for 48kHz settings ?

That's the idea, yes.

> Then, FE side want to know this result (= BE want to use 48kHz).
> I can add something new method for it ?

Let's have a look at the code - it might be easier to do it within the
driver but a framework feature is also OK.

> Or does current upstream code already have something this feature ?

No, just the fixup functions.
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