Re: [PATCH 1/3] ALSA: pcm: add support for 128kHz sample rate

[Jerome Brunet <jbrunet@baylibre.com>]

>> 
>> Apart from the problem reported in sound/usb/caiaq/audio.c, is there
>> another clean up expected ?
>
> The change for caiaq/audio.c is rather a "fix" :)
> As a cleanup, I meant, whether this extension can be applied to the
> other existing drivers that already use 128kHz with RATE_KNOT and an
> extra list.

Grepping in sound/ for 128000, I've found only 3 files which could
benefit from solely adding 128kHz to the defined rates:

* sound/pci/cmipci.c
* sound/pci/rme9652/hdsp.c
* sound/pci/rme9652/hdspm.c

The rest are unsing other rates which require the use of RATE_KNOT.
The most regular rates being 12kHz and 24kHz. Adding those as well could
help in:

* sound/soc/codecs/adau1977.c
* sound/soc/fsl/fsl_asrc.c
* sound/soc/fsl/fsl_easrc.c
* sound/soc/intel/avs/pcm.c

I admit that's a fairly low number of drivers, maybe it is not worth it
at this stage.

Takashi, Mark, what is your preference ? Should I:
 * tweak the spdif codec to use RATE_KNOT ?
 * add just 128kHz, fixing the 3 file above ?
 * add 12 and 24kHz as well ?

I don't really mind one way or the other.

>
>
> thanks,
>
> Takashi

-- 
Jerome