From: Takashi Iwai <tiwai@suse.de>
To: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: Declaring HDMI channel allocation to kernel
Date: Tue, 24 Jul 2012 14:33:13 +0200 [thread overview]
Message-ID: <s5hipdds5iu.wl%tiwai@suse.de> (raw)
In-Reply-To: <500DA87A.8080901@linux.intel.com>
At Mon, 23 Jul 2012 14:39:38 -0500,
Pierre-Louis Bossart wrote:
>
> On 7/23/2012 9:18 AM, Gabriel M. Beddingfield wrote:
> >
> > Is there an established way for me (from userspace) to pass the HDMI
> > Channel Allocation (1 byte) to the driver? If not, can you recommend
> > an approach?
> >
> > In most of the drivers that I've inspected, the drivers seem to assume
> > that there's a 1:1 mapping of Number-of-Channels to
> > Channel-Allocation. However, the HDMI sink declares which speakers it
> > has attached in the EDID. If I can match this in userspace... I need
> > a way to communicate it to the driver.
> I believe this is one of the topics that will be presented by Takashi at
> LPC, we need the ability to specify a arbitrary sink-specific channel
> mapping.
Ah, sorry, this topic was canceled due to the time slot limitation.
But I can bring up the topic if we get another time slot, at BoF or
whatever.
Takashi
next prev parent reply other threads:[~2012-07-24 12:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-23 14:18 Declaring HDMI channel allocation to kernel Gabriel M. Beddingfield
2012-07-23 19:39 ` Pierre-Louis Bossart
2012-07-24 12:30 ` Gabriel M. Beddingfield
2012-07-24 17:43 ` Ricardo Neri
2012-07-24 18:55 ` Gabriel Beddingfield
2012-07-25 3:10 ` Ricardo Neri
2012-07-24 12:33 ` Takashi Iwai [this message]
2012-07-24 12:36 ` Mark Brown
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