linux-kernel - Re: [PATCH 1/4] ASoC: wm9713: add binding for WM9713 codec

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Message-ID: <20160220195925.GF18327@sirena.org.uk>
Date:	Sun, 21 Feb 2016 04:59:25 +0900
From:	Mark Brown <broonie@...nel.org>
To:	Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, alsa-devel@...a-project.org,
	patches@...nsource.wolfsonmicro.com
Subject: Re: [PATCH 1/4] ASoC: wm9713: add binding for WM9713 codec

On Sat, Feb 20, 2016 at 07:22:04PM +0100, Robert Jarzmik wrote:
> Mark Brown <broonie@...nel.org> writes:

> > Instead we should be probing at runtime (as the non-ASoC AC'97 code does) or
> > something similar.

> When you say "non-ASoC AC'97 code", which file are you referring to ? Is it
> sound/pci/ac97/ac97_codec.c ?

Yes.

> If so is there already a table of tuples (AC97_VENDOR_ID1, AC97_VENDOR_ID2) ->
> (platform device, platform device data) and a matching mechanism already
> available to the ASoC drivers ?

ASoC doesn't really support the enumeration very well, you can use
ac97.c as the CODEC but that's about it.  There is a generic AC'97 PXA
driver in sound/arm, if your system can use that that'd be a better
route to DT integration for it I think.  Did you try that, if there are
problems with that perhaps we can improve that driver, it should  be
simpler.

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