[Bug 100023] [SKL] LSPCon and DisplayPort always output limited range RGB, even when it should output full range RGB

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100023

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #29 from Jani Nikula <jani.nikula at intel.com> ---
Thanks for testing. Let's keep all LSPCON related limited range discussion
here, and direct all native DP discussion to bug 107476.

Shashank's patch series [1] on top of drm-tip might fix the color range issue
on LSPCON. As I wrote in the commit message of the patch [2] that fixes bug
107476, I'm guessing the LSPCON fails to turn the CEA range MSA into proper AVI
infoframes. Turns out there's a way to manually override the infoframes the
LSPCON produces, and this is what Shashank's patches do, although originally
aimed at adding YCbCr support. Please test.

[1] https://patchwork.freedesktop.org/series/36068/
[2]
http://patchwork.freedesktop.org/patch/msgid/20180814060001.18224-1-jani.nikula@intel.com

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