linux-kernel - Re: [PATCH] drm: edid revision 0 is valid

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Date:	Tue, 10 Mar 2009 20:10:26 -0700
From:	Eric Anholt <eric@...olt.net>
To:	Jamie Lokier <jamie@...reable.org>
Cc:	Kyle McMartin <kyle@...radead.org>, airlied@...hat.com,
	linux-kernel@...r.kernel.org, dri-devel@...ts.sourceforge.net,
	jbarnes@...tuousgeek.org, marko.ristola@...umbus.fi
Subject: Re: [PATCH] drm: edid revision 0 is valid

On Wed, 2009-03-11 at 02:56 +0000, Jamie Lokier wrote:
> Kyle McMartin wrote:
> > -	if (edid->revision <= 0 || edid->revision > 3) {
> > +	if (edid->revision > 3) {
> >  		DRM_ERROR("EDID has minor version %d, which is not between 0-3\n", edid->revision);
> >  		goto bad;
> 
> Ahem.  EDID version 1.4 exists too, in fact it's the current version.
> EDID 1.5+ doesn't exist, but it should be backward compatible when it does.
> 
> I'm doing a lot of work on another EDID parser, including full DMT and
> CEA-861 mode tables, monitor hotplug, all quirks from Xorg and the
> kernel, EDID 1.4 support w/ CVT calculation, etc. right now for an
> embedded Linux video project.  Would there be any interest
> incorporating parts of that work?

There's work going on for CEA-861 and syncing KMS against UMS.  But
certainly we love fixes when we don't even have to write them ourselves.

-- 
Eric Anholt
eric@...olt.net                         eric.anholt@...el.com



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