From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marek.vasut@gmail.com>
Subject: Re: ALSA patch Nvidia 8 channel hdmi audio
Date: Wed, 3 Jun 2009 00:22:07 +0200
Message-ID: <200906030022.07693.marek.vasut@gmail.com>
References: <410e92830906021458x3d47a1d6jebba8bbe1150e76d@mail.gmail.com>
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To: Alan Alan <alanwww1@gmail.com>
Cc: alsa-devel@alsa-project.org, Wei Ni <wni@nvidia.com>
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I'm not the author of the patch, CCing alsa-devel and the original author.

On Tuesday 02 of June 2009 23:58:26 Alan Alan wrote:
> Hi Marek !
>
> I just read your emailing with nvidia devs about alsa supporting 8 channel
> lpcm over hdmi.
>
> I checked it out an i have to tell it is working awsome, except for a few
> bugs:
>
> The channels are wrong mapped. Running a speakertest -Dhdmi -c6 gives the
> following result (first where it should sound)
> FL - FL
> C - RL
> FR - FR
> RR - LFE
> RL - C
>
> The other thing i realized that playback is limited to 16 bits 48 khz. I
> think the minimum which is supported by nvidia hardware is 24bits 96 (or
> 192) khz.
> Why not ?
>
> Could you contact the devs as i don't know how to reach them.
>
> ps.: Mybe my build methot was not 100% ok ? I used 1.020 Alsa with the
> oatched nvidia.c file. Anyway the amplifier shows multichannel LPCM and
> that's great news.