[Bug 97883] [i915] intel_backlight does not function - Lenovo X1 Yoga OLED

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97883

--- Comment #28 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Niklas Kielblock from comment #27)
> Have you tried to contact anyone about this? Is there anything you can say
> about our chances of having this hardware supported in intel_backlight?

Based on my current (and possibly flawed, mind you) understanding, the chances
are slim, I'm afraid.

If anyone can enable CONFIG_DRM_DP_AUX_CHARDEV=y and dump the DPCD using the
aux chardev (IIRC should pop up somewhere under /sys/class/drm/card0-eDP-1), it
might give some clues.

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