svn commit: r270516 - head/sys/dev/drm2/i915
jhb at freebsd.org
Mon Aug 25 16:40:51 UTC 2014
On Monday, August 25, 2014 05:03:10 AM Adrian Chadd wrote:
> Author: adrian
> Date: Mon Aug 25 05:03:10 2014
> New Revision: 270516
> URL: http://svnweb.freebsd.org/changeset/base/270516
> i915 driver - enable opregion handle; program CADL.
> add opregion handling for drm2 - which exposes some ACPI video
> configuration pieces that some Lenovo laptop models use to flesh out which
> video device to speak to. This enables the brightness control in ACPI to
> work these models.
> The CADL bits are also important - it's used to figure out which ACPI
> events to hook the brightness buttons into. It doesn't yet seem to work
> for me, but it does for the OP.
FWIW, on my Lenovo X220, this completely fixes the brightness buttons both in
and out of X once i915kms is loaded.
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