From: Mark Brown <broonie@sirena.org.uk>
To: ext-jukka.hynninen@vaisala.com
Cc: alsa-devel@alsa-project.org
Subject: Re: ASoC WM8510 Mic PGA problem
Date: Fri, 3 Oct 2008 14:39:37 +0100 [thread overview]
Message-ID: <20081003133936.GD26035@sirena.org.uk> (raw)
In-Reply-To: <B9D3C48C98930741A166756A50C44A610F17B555@helx1.corp.vaisala.com>
On Fri, Oct 03, 2008 at 04:20:20PM +0300, ext-jukka.hynninen@vaisala.com wrote:
> I'm facing trouble with programmable mic gain stage and WM8510 ASoC
> driver.
> First of all, the DAPM control "Mic PGA Switch" seems to be operating
> just the opposite way the codec datasheet suggests. I inverted the
> control with expected result, PGA now almost works.
Yes, that's right - good catch, thanks. I will post a patch for this
shortly.
> When I start capturing, the "Mic PGA" control is instantly turned off
> again. If I manually enable the control while the capture is running, it
> works just fine.
Could you expand on what you're seeing here - what exactly is the user
visible behaviour you observe? Are you looking at dapm_widgets in sysfs
or something else? Looking at the driver code the power management does
need some fixes but I'd like to confirm exactly what you're seeing
before looking at them.
It might help if you were able to provide your machine driver.
next prev parent reply other threads:[~2008-10-03 13:39 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-03 13:20 ASoC WM8510 Mic PGA problem ext-jukka.hynninen
2008-10-03 13:39 ` Mark Brown [this message]
2008-10-06 7:20 ` ext-jukka.hynninen
2008-10-06 10:05 ` Mark Brown
2008-10-06 10:53 ` ext-jukka.hynninen
2008-10-07 12:11 ` Mark Brown
2008-10-07 13:29 ` ext-jukka.hynninen
2008-10-07 13:43 ` Mark Brown
2008-10-07 14:21 ` ext-jukka.hynninen
2008-10-07 14:27 ` Mark Brown
2008-10-07 14:59 ` Mark Brown
2008-10-08 6:37 ` ext-jukka.hynninen
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