[PATCH] drm: parse color format support for digital displays
ajax at redhat.com
Fri Apr 15 12:36:22 PDT 2011
On 4/15/11 3:19 PM, Jesse Barnes wrote:
> Or is there a CEA block extension that allows for more granularity?
CEA has bits for the two YCbCr formats too, which we should also parse
since there's plenty of 1.3+CEA blocks in the world thanks to HDMI. For
CEA blocks version 2 and up (version number in byte 2 of the CEA block,
zero-based indexing), (1 << 5) of byte 3 is 4:4:4 and (1 << 4) is 4:2:2.
Same byte as what we already check for EDID_BASIC_AUDIO, if that's any
clearer. CEA spec contains the same language about always supporting
I don't have a good answer for what to do if you have a 1.4+CEA block
and the two bitfields are inconsistent, besides violence against the
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