From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Justin P. Mattock" <justinmattock@gmail.com>
Subject: Re: mic on macbook air
Date: Mon, 27 Sep 2010 09:36:46 -0700
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References: <1285540323.2205.11.camel@vino> <s5hvd5rxncg.wl%tiwai@suse.de>
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To: Takashi Iwai <tiwai@suse.de>
Cc: Reimundo <rheluani@gmail.com>, alsa-devel@alsa-project.org
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On 09/27/2010 07:39 AM, Takashi Iwai wrote:
> At Mon, 27 Sep 2010 00:32:03 +0200,
> Reimundo wrote:
>>
>> Hello list, from time to time I spend some time trying to get the mic
>> working on a Macbook air 2,1. I tried looking at the relevant info from
>> the corresponding kernel extensions on mac os X. The codec has  "Vendor
>> Id: 0x10ec0885" so the relevant part of the info.plist on mac os X reads
>>
>> <dict>
>> <key>MicAttributes</key>
>> <integer>28</integer>
>> <key>MicInfo</key>
>> <string>Sampled on rising edge</string>
>> <key>NodeID</key>
>> <integer>39</integer>
>> <key>PinConfigDefault</key>
>> <integer>2426405136</integer>
>> </dict>
>>
>> Which tells me nothing. In particular I don't have a node 0x27=39 (at
>> least not that hda-analyzer sees) so it's not surprising that if I send
>> the corresponding verbs to set_config_default I don't get anything.
>> Also, I don't see how setting the pinconfigdefault could affect my not
>> having the mic working (anyway I tried setting those pinconfigdefaults
>> that put the node as a fixed mic on all nids 0x19-0x1c to no avail)
>>
>> As for the sampled on rising edge, I don't know how to use this info.
>> any ideas?
>
> Justin Mattock made once some patches for MacBookAir, but they are
> pending because no one tested yet.
>
> Justin, could you repost the patches (rebase if needed) for testing
> again?
>
>
> thanks,
>
> Takashi
>


Sure I can rebase them... but there's no guarantee that they work...
from what I remember the mic on the macbookAir is not shown with the 
codec file so you might have to change the pins around.

Justin P. Mattock