linux-kernel - Re: Question about simple-audio-card with dummy CODEC

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Message-ID: <CAHCN7x+jkU-UoR9DAPorC_i8Z-6sf4Qg2qRW444mzU1DcKiwnA@mail.gmail.com>
Date:   Sun, 27 Aug 2023 07:16:01 -0500
From:   Adam Ford <aford173@...il.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Shengjiu Wang <shengjiu.wang@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>
Subject: Re: Question about simple-audio-card with dummy CODEC

On Sun, Aug 27, 2023 at 6:54 AM Mark Brown <broonie@...nel.org> wrote:
>
> On Sat, Aug 26, 2023 at 11:15:30PM -0500, Adam Ford wrote:
>
> > I am asking what is the best way to let simple-audio-card  use a dummy
> > codec?  If the dummy codec is the better option, what compatible name
> > should I use?
>
> We have a driver for DMICs, dmic.c - you should use that.  In general

Thank you. This looks like exactly what I need.  I just didn't know
what it was called.

> you should never use the dummy CODEC, you should use a driver for the
> specific thing on the board which will at least describe the
> capabilities of the hardware even if it doesn't have any ops that do
> anything.

I thought the dummy codec was a bad idea based on my searching.  I
appreciate the quick response.

adam