From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Stephen Warren <swarren@nvidia.com>
Cc: linux-tegra@vger.kernel.org, alsa-devel@alsa-project.org,
lrg@slimlogic.co.uk
Subject: Re: [PATCH] ASoC: tegra: Add DAPM widgets/routes for Harmony
Date: Thu, 13 Jan 2011 22:38:35 +0000 [thread overview]
Message-ID: <20110113223834.GA13717@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1294957328-15869-1-git-send-email-swarren@nvidia.com>
On Thu, Jan 13, 2011 at 03:22:08PM -0700, Stephen Warren wrote:
> Question: Harmony has a mono mic attached to the left input channel.
> However, the I2S controller only supports stereo. Is it possible to
> duplicate the mic input to both channels in ALSA? I know the WM8903
> can do it via the WM8903_AUDIO_INTERFACE_0 register, but I'm not
> sure how to request that in ALSA-speak. It looks like this same setup
> applies to many other platforms, but I couldn't see how the issue was
> solved, if at all.
It needs implementing it in the CODEC driver, it's not currently
supported as the feature is very rarely used. I'll add it to the list
to look at, like I say I'm holding off until the merge window closes so
that the clock changes (and hopefully SD card support) get a chance to
merge into the tree and allow things to work out of the box as far as
possible.
next prev parent reply other threads:[~2011-01-13 22:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-13 22:22 [PATCH] ASoC: tegra: Add DAPM widgets/routes for Harmony Stephen Warren
2011-01-13 22:38 ` Mark Brown [this message]
2011-01-14 11:05 ` Liam Girdwood
2011-01-14 12:32 ` Mark Brown
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