Re: [PATCH v3 2/3] ASoC: soc-pcm: Indicate warning if CPU / Codec availability mismatch

[Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>]

Hi Pierre-Louis, Mark

> We cannot change the Maxim amplifier driver, it's used in a variety of
> usages and platforms, and there's no reason to create a fake capture dai
> just to reflect the use of a capture stream on the CPU side on some
> Chromebooks.

Why cannot ??
There is no effect to user if Maxim driver has full channel setting same as
dammy DAI. It will be handled together with CPU, and system gets CPU
channels as-is.

> I don't disagree that the unconditional use of dpcm_capture isn't very
> elegant, but it is what it is. This platform has been around since 2019
> and still has about 6 or 7 years of support, so we can't break it with
> stricter criteria.

My opinion is that working without channels settings is wrong.
I can understand that it was working in long years, but it is working with
wrong settings. So justify a wrong-settings is not good idea for me.
And I don't think it is stricter criteria, it becomes *sane* criteria, IMO.

Because it was working with wrong-settings, we need to makes it sane.
This is the reason why it has grace time.

Thank you for your help !!

Best regards
---
Renesas Electronics
Ph.D. Kuninori Morimoto