Call for an EDID parsing library

[Pekka Paalanen]

On Thu, 08 Apr 2021 16:49:37 +0300
Jani Nikula <jani.nikula at linux.intel.com> wrote:

> Anyway, this is only tangentially related to the library. I just think
> we need to take DisplayID better into account also in the *users* of the
> library, as they shouldn't really even look at the EDID if the plain
> DisplayID is there, per E-DDC 1.3 section 3.1.

That makes me wonder what the kernel DRM uAPI for getting a DisplayID
block into userspace would be. A new read-only KMS connector property?

Which means userspace (e.g. Weston) needs to know to read the new
property. If it does that, then it already knows that it should favour
DisplayID over EDID, and there is little the library could do to help
with that.

Unless you think the library should be making DRM ioctls, which doesn't
sound good to me.


Thanks,
pq
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