From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vinod Koul <vinod.koul@intel.com>
Subject: Re: HDMI codec, way forward?
Date: Tue, 20 Oct 2015 19:31:48 +0530
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To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Jean-Francois Moine <moinejf@free.fr>, alsa-devel@alsa-project.org, Lars-Peter Clausen <lars@metafoo.de>, Takashi Iwai <tiwai@suse.de>, tomi.valkeinen@ti.com, Arnaud Pouliquen <arnaud.pouliquen@st.com>, lgirdwood@gmail.com, dri-devel@lists.freedesktop.org, peter.ujfalusi@ti.com, David Airlie <airlied@linux.ie>, broonie@kernel.org, Jyri Sarha <jsarha@ti.com>
List-Id: alsa-devel@alsa-project.org

On Tue, Oct 20, 2015 at 09:08:00AM +0100, Russell King - ARM Linux wrote:
> > > Currently i915/audio component works as you described.  The audio is
> > > optional and HDMI graphics works without audio, while HDMI HD-audio
> > > mandates i915 graphics.
> > 
> > Right, but we also add additional interface on top of this to allow
> > things like ensuring display is on when audio wants to run and now
> > notification for events.
> > 
> > I don't see a reason why this can be used as single interface to bind as
> > well as talk to display from various components, unless I missed obvious
> > which prevent us from doing this in non i915 cases...
> 
> Maybe I can comment more specifically if I saw the code.  Right now all
> I'm aware of is this idea without any code, and I don't like it.

Ok, i will be post my patches tomorrow. FWIW uses interface in
sound/hda/hdac_i915.c for display power up/down

-- 
~Vinod