svn commit: r270516 - head/sys/dev/drm2/i915

Adrian Chadd adrian at
Mon Aug 25 16:08:56 UTC 2014

On 25 August 2014 07:26, John Baldwin <jhb at> wrote:
> 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:
>> Log:
>>   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.
> We should also look at enabling the opregion notification stuff.  Presumably
> that is part of ACPI-CA itself so it shouldn't be hard to make the equivalent
> calls for FreeBSD.

I agree. Like this was - patches gratefully accepted. :)

> Also, is leaving around the #if 0'd Linux version something the drm2 code does
> in general or was that unique to this patch?  If the latter, we should remove
> the duplicate #if 0 code (list_for_each, etc.)

Sometimes it is, sometimes it isn't.


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