At Wed, 16 Jul 2008 10:11:27 -0500,
Timur Tabi wrote:
>
> Takashi Iwai wrote:
>
> > In a simple case, you don't need hw_constraint functions. Just
> > override the corresponding fields of runtime->hw in open callback.
> >
> > For example, pci/via82xx.c sets the current rate value to
> > runtime->hw.rate_min/max if there is another stream.
>
> Are you talking about this code:
>
> } else {
> /* a fixed rate */
> runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
> runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
> }
>
> Last I heard, ASoC doesn't work with SNDRV_PCM_RATE_KNOT. But I think I can
> still use this method. I'll just need to use a real SNDRV_PCM_RATE_xxx value.
KNOT is set there just because it can be any rate (and easy to
handle). If the rate is a normal one, e.g. 48kHz, then you can set
the appropriate bitflag in hw.rates.
Takashi
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