linux-kernel - Re: Sound record on Devkit8000 with DT boot issue

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Date:	Mon, 11 Feb 2013 19:14:05 +0100
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Anil Kumar <anilk4.v@...il.com>
CC:	<linux-kernel@...r.kernel.org>,
	<devicetree-discuss@...ts.ozlabs.org>,
	<alsa-devel@...a-project.org>, <tony@...mide.com>,
	<thomas@...weber.eu>, <perex@...ex.cz>, <tiwai@...e.de>,
	Liam Girdwood <liam.r.girdwood@...ux.intel.com>
Subject: Re: Sound record on Devkit8000 with DT boot issue

Hi,

On 02/11/2013 06:58 PM, Anil Kumar wrote:
>> Here you should have something like:
>> ti,audio-routing =
>>         "Ext Spk", "PREDRIVEL",
>>         "Ext Spk", "PREDRIVER",
>>         "MAINMIC", "Main Mic",
>>         "Main Mic", "Mic Bias 1";
>>
>> So you connect the MicBias1 to Main Mic. When you start playback MicBias1 will
>> be turned on for you.
> 
> I tried with this routing (next-20130211 tag kernel). But it is not
> working for me.
> So i have gone through other board and found snd_soc_dapm_route for
> 
> 1) zoom2.c
>        {"MAINMIC", NULL, "Mic Bias 1"},
>        {"Mic Bias 1", NULL, "Ext Mic"},
> 
> 2) omap3pandora.c
>         {"MAINMIC", NULL, "Mic Bias 1"},
>         {"Mic Bias 1", NULL, "Mic (internal)"},
> 
> But for omap-twl4030.c it is
>         {"MAINMIC", NULL, "Main Mic"},
>         {"Main Mic", NULL, "Mic Bias 1"},
> 
>  It Should will be as ?
>         {"MAINMIC", NULL, "Mic Bias 1"},
>         {"Mic Bias 1", NULL, "Main Mic"},
> 
> Because with this i am able to get audio on Devkit8000 as
>              ti,audio-routing =
>                         "Ext Spk", "PREDRIVEL",
>                         "Ext Spk", "PREDRIVER",
>                         "MAINMIC", "Mic Bias 1",
>                         "Mic Bias 1", "Main Mic";

In 3.9 this should not work...

linux-next should not have zoom2 at least and I converted the machine drivers
as well in regards to micbias handling:
e04d6e5 ASoC: twl4030: Convert MICBIAS to SUPPLY widget
57d61b9 ASoC: OMAP: Remove obsolete machine drivers for Zoom2 and SDP3430

-- 
Péter
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