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

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Message-ID: <ZOs5exw+95zzzawK@finisterre.sirena.org.uk>
Date:   Sun, 27 Aug 2023 12:54:35 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Adam Ford <aford173@...il.com>
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 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
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.

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