[PATCH v3 03/16] drm/edid: Allow the querying/working with the panel ID from the EDID

Sam Ravnborg sam at ravnborg.org
Sun Sep 5 18:17:16 UTC 2021


Hi Douglas,

On Wed, Sep 01, 2021 at 01:19:21PM -0700, Douglas Anderson wrote:
> EDIDs have 32-bits worth of data which is intended to be used to
> uniquely identify the make/model of a panel. This has historically
> been used only internally in the EDID processing code to identify
> quirks with panels.
> 
> We'd like to use this panel ID in panel-simple to identify which panel
> is hooked up and from that information figure out power sequence
> timings. Let's expose this information from the EDID code and also
> allow it to be accessed early, before a connector has been created.
> 
> To make matching in the panel-simple code easier, we'll return the
> panel ID as a 32-bit value. We'll provide some functions for
> converting this value back and forth to something more human readable.
> 
> Signed-off-by: Douglas Anderson <dianders at chromium.org>
nit - two patches down this is no longer panel-simple.


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