From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Subject: Re: [PATCH v2] pass ELD to HDMI/DP audio driver Date: Fri, 29 Jul 2011 13:07:59 -0700 Message-ID: <20110729130759.37aca083@jbarnes-desktop> References: <20110629062013.GA17296@localhost> <20110629131013.GA10900@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from oproxy3-pub.bluehost.com (oproxy3-pub.bluehost.com [69.89.21.8]) by gabe.freedesktop.org (Postfix) with SMTP id CBCEC9E822 for ; Fri, 29 Jul 2011 13:08:08 -0700 (PDT) In-Reply-To: <20110629131013.GA10900@localhost> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Wu Fengguang Cc: alsa-devel@alsa-project.org, Wang Zhenyu , "intel-gfx@lists.freedesktop..." , dri-devel@lists.freedesktop.org, Ben Skeggs , Christopher White , Jeremy Bush , "Bossart, Pierre-louis" List-Id: dri-devel@lists.freedesktop.org On Wed, 29 Jun 2011 21:10:13 +0800 Wu Fengguang wrote: > Update: according to the spec, limit max a/v latencies to 500ms and > avoid overflowing the ELD field Aud_Synch_Delay[7:0]. > > Thanks to Pierre for pointing this out! > > btw, the drm_edid_to_eld() function reuses some code from Ben Skeggs. > Ben, please add your Signed-off-by if the patch looks OK to you :) Looks like this needs to be refreshed against Keith's drm-intel-next tree (some trivial conflicts). I tested this on a Sandy Bridge laptop I have but wasn't able to get audio through my DP->HDMI dongle to my HDMI TV. Does the HDMI HDA codec need any special parameters to work? Thanks, -- Jesse Barnes, Intel Open Source Technology Center