From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: Re: HDMI codec, way forward? Date: Sun, 18 Oct 2015 21:43:29 +0530 Message-ID: <20151018161329.GV27370@localhost> References: <5620E482.6050507@ti.com> <5620EE2F.8070504@metafoo.de> <20151016133717.GI32532@n2100.arm.linux.org.uk> <20151018150834.GP27370@localhost> <20151018152048.GT32532@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by alsa0.perex.cz (Postfix) with ESMTP id AD741264EE5 for ; Sun, 18 Oct 2015 18:10:37 +0200 (CEST) Content-Disposition: inline In-Reply-To: <20151018152048.GT32532@n2100.arm.linux.org.uk> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Russell King - ARM Linux Cc: Jean-Francois Moine , alsa-devel@alsa-project.org, Lars-Peter Clausen , David Airlie , broonie@kernel.org, Arnaud Pouliquen , lgirdwood@gmail.com, dri-devel@lists.freedesktop.org, peter.ujfalusi@ti.com, tomi.valkeinen@ti.com, Jyri Sarha List-Id: alsa-devel@alsa-project.org On Sun, Oct 18, 2015 at 04:20:48PM +0100, Russell King - ARM Linux wrote: > On Sun, Oct 18, 2015 at 08:38:34PM +0530, Vinod Koul wrote: > > On Fri, Oct 16, 2015 at 02:37:17PM +0100, Russell King - ARM Linux wrote: > > > I've sent one proposal which uses a notifier to inform audio and CEC > > > drivers about state changes in the HDMI video side, and had precisely > > > zero replies to it - people seemed to prefer discussing stuff rather > > > than reviewing code and coming up with actual solutions. > > > > Do you mind sending me a pointer to this series, I would like to read this > > up > > It isn't a series. It's a prototype patch that I posted in one of the > previous threads earlier this month: > > Date: Tue, 6 Oct 2015 19:51:57 +0100 > Subject: Re: [alsa-devel] [PATCH RFC V2 0/5] another generic audio hdmi codec > proposal > Message-ID: <20151006185157.GT21513@n2100.arm.linux.org.uk> > > As I've said there, audio is not the only issue here, CEC also needs to > have access to much the same information that audio needs. > > CEC needs to know two things: when the HDMI sink is disconnected, and > when the HDMI sink's EDID is available (specifically, CEC needs to know > the HDMI physical address for itself, which is passed as a number via > the EDID HDMI vendor block.) Right but can I ask why you didn't try making video as component and then CEC, audio and others receive the notification over this. I don't know if there are any limitations to this since you wrote component bits you are the best person to comment... -- ~Vinod