From: Mark Brown <broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
To: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org"
<alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org>,
"lrg-kDsPt+C1G03kYMGBc/C6ZA@public.gmane.org"
<lrg-kDsPt+C1G03kYMGBc/C6ZA@public.gmane.org>
Subject: Re: [alsa-devel] [PATCH 6/6] ASoC: Tegra: Harmony: Support both int and ext mics
Date: Wed, 9 Feb 2011 12:15:57 +0000 [thread overview]
Message-ID: <20110209121555.GA27669@sirena.org.uk> (raw)
In-Reply-To: <74CDBE0F657A3D45AFBB94109FB122FF0310F60084-C7FfzLzN0UxDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
On Tue, Feb 08, 2011 at 03:32:00PM -0800, Stephen Warren wrote:
> Well, one other option is to completely ignore (and disable) the internal
> mic, and just support the external mic (jack). Then, mic detection could
> be implemented. The advantage here is similarity to other boards without
> the mic bias sharing issue. Plus, the jack is probably far more useful
> than the internal mic on this board:
> I honestly don't know how many boards (if any) actually have anything
> plugged into the internal mic header on the board. Mine certainly
> didn't originally; I used a PC speaker I stole from somewhere else as
> the internal mic;-)
That's certainly a sensible option if we don't know that many systems
were shipped with the internal mic connected. We could do something
like what the AT91SAM9G20 platform does with ifdefed code for the mic
(in that case there's no mic support in the hardware but the CODEC is
in a low density package so it's relatively common for users to lift
pins to flying wire in a mic) I guess.
--
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next prev parent reply other threads:[~2011-02-09 12:15 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-03 20:56 [PATCH 1/6] ASoC: Tegra: Harmony: Add headphone jack detection Stephen Warren
2011-02-03 20:56 ` [PATCH 2/6] ASoC: Tegra: Harmony: Add switch control for speaker Stephen Warren
[not found] ` <1296766578-13988-2-git-send-email-swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2011-02-04 14:46 ` Mark Brown
2011-02-09 12:11 ` [alsa-devel] " Mark Brown
2011-02-03 20:56 ` [PATCH 3/6] ASoC: WM8903: Fix mic detection issues Stephen Warren
[not found] ` <1296766578-13988-3-git-send-email-swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2011-02-03 22:38 ` Mark Brown
2011-02-03 20:56 ` [PATCH 4/6] ASoC: Tegra: Harmony: Implement mic detection Stephen Warren
[not found] ` <1296766578-13988-4-git-send-email-swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2011-02-03 22:40 ` Mark Brown
2011-02-03 20:56 ` [PATCH 5/6] ASoC: Harmony: Call snd_soc_dapm_nc_pin Stephen Warren
[not found] ` <1296766578-13988-5-git-send-email-swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2011-02-04 14:46 ` Mark Brown
2011-02-03 20:56 ` [PATCH 6/6] ASoC: Tegra: Harmony: Support both int and ext mics Stephen Warren
2011-02-03 22:52 ` Mark Brown
[not found] ` <20110203225235.GD4586-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2011-02-04 17:20 ` Stephen Warren
[not found] ` <74CDBE0F657A3D45AFBB94109FB122FF0310C8EB68-C7FfzLzN0UxDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2011-02-07 11:13 ` [alsa-devel] " Mark Brown
[not found] ` <20110207111310.GA31475-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2011-02-08 20:34 ` Stephen Warren
[not found] ` <74CDBE0F657A3D45AFBB94109FB122FF0310F5FFAC-C7FfzLzN0UxDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2011-02-08 20:58 ` Mark Brown
[not found] ` <20110208205848.GA23844-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2011-02-08 23:32 ` Stephen Warren
[not found] ` <74CDBE0F657A3D45AFBB94109FB122FF0310F60084-C7FfzLzN0UxDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2011-02-09 12:15 ` Mark Brown [this message]
[not found] ` <1296766578-13988-1-git-send-email-swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2011-02-03 22:35 ` [PATCH 1/6] ASoC: Tegra: Harmony: Add headphone jack detection Mark Brown
[not found] ` <20110203223530.GA4586-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2011-02-03 23:25 ` Stephen Warren
2011-02-04 14:47 ` Mark Brown
[not found] ` <74CDBE0F657A3D45AFBB94109FB122FF0310C8EA93-C7FfzLzN0UxDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2011-02-04 20:32 ` Stephen Warren
[not found] ` <74CDBE0F657A3D45AFBB94109FB122FF0310F5FB00-C7FfzLzN0UxDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2011-02-08 20:28 ` [alsa-devel] " Stephen Warren
[not found] ` <74CDBE0F657A3D45AFBB94109FB122FF0310F5FFA5-C7FfzLzN0UxDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2011-02-08 20:59 ` Mark Brown
[not found] ` <20110208205917.GB23844-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2011-02-08 21:56 ` Liam Girdwood
2011-02-09 12:11 ` Mark Brown
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