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From: Charles Keepax <ckeepax@opensource.cirrus.com>
To: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: patches@opensource.cirrus.com,
	Charles Keepax <ckeepax@opensource.wolfsonmicro.com>,
	Mark Brown <broonie@kernel.org>,
	alsa-devel@alsa-project.org
Subject: Re: [alsa-devel] wm9713 regression on pxa platforms
Date: Mon, 28 Oct 2019 22:49:33 +0000	[thread overview]
Message-ID: <20191028224933.GF31391@ediswmail.ad.cirrus.com> (raw)
In-Reply-To: <87a79nqnkd.fsf@belgarion.home>

On Sat, Oct 26, 2019 at 10:06:10PM +0200, Robert Jarzmik wrote:
> Hi Wolfson maintainers, hi Mark,
> 
> Recently, the wm9713 support broke on my platforms. I'm pretty sure that a
> previous harmless warning became an error preventing the probe of my driver
> (sound/soc/pxa/mioa701_wm9713.c) : the error is shown in [1] ("Control not
> supported").
> 
> The warning "ASoC: no dapm match for Mic B Source" has be there as far as I'm
> aware for ages, and it never prevented the probe before.
> 
> Now, if I apply the ugly patch in [2], everything works as expected ... but
> that's definitely not the right fix.
> 
> Would any of you be able to figure out a fix please ?
> 

I suspect the patch that turned this into a fatal error was this
one:

daa480bde6b3 ("ASoC: soc-core: tidyup for snd_soc_dapm_add_routes()")

That said the error is clearly valid and the driver should be
fixed. The routes make no sense and are clearly wrong. I strongly
suspect the routes should look like this:

{"Mic B Pre Amp", NULL, "Mic B Source"},
{"Mic B Source", "MPB", "MIC2B"},

I am travelling this week, and would need to do a bit more
datasheet diving to be sure. But be worth checking if that fixes
it and I can fire out a real patch start of next week.

Thanks,
Charles

> [2] Ugly test
> diff --git a/sound/soc/codecs/wm9713.c b/sound/soc/codecs/wm9713.c
> index 6497c1ea6228..ec140ccbab0b 100644
> --- a/sound/soc/codecs/wm9713.c
> +++ b/sound/soc/codecs/wm9713.c
> @@ -630,8 +630,8 @@ static const struct snd_soc_dapm_route wm9713_audio_map[] = {
>         {"Mic A Source", "Mic 1", "MIC1"},
>         {"Mic A Source", "Mic 2 A", "MIC2A"},
>         {"Mic A Source", "Mic 2 B", "Mic B Source"},
> -       {"Mic B Pre Amp", "MPB", "Mic B Source"},
> -       {"Mic B Source", NULL, "MIC2B"},
> +       /* {"Mic B Pre Amp", "MPB", "Mic B Source"}, */
> +       /* {"Mic B Source", NULL, "MIC2B"}, */
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  reply	other threads:[~2019-10-28 22:50 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-26 20:06 [alsa-devel] wm9713 regression on pxa platforms Robert Jarzmik
2019-10-28 22:49 ` Charles Keepax [this message]
2019-10-30 21:50   ` Robert Jarzmik

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