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Date:      Sat, 31 Jan 2015 00:13:28 -0600
From:      Elizabeth Myers <elizabeth@interlinked.me>
To:        Adrian Chadd <adrian@freebsd.org>, Konstantin Belousov <kib@freebsd.org>
Cc:        freebsd-current <freebsd-current@freebsd.org>, Justin Hibbits <jrh29@alumni.cwru.edu>
Subject:   Re: Questions on adding backlight support for the i915 driver
Message-ID:  <54CC7288.3040409@interlinked.me>
In-Reply-To: <CAJ-VmonuAC9YFXR8jai5%2BKdW5q2x%2BjVVEABP0zRXiwHyWAC8pA@mail.gmail.com>
References:  <54C883E7.4000300@interlinked.me>	<CAJ-Vmokw2FqLHMkc%2B0MDsDxChMC68KdkvO43qhFztTZf8F89Mg@mail.gmail.com>	<CAHSQbTCrU-8kYpNoL_UiNd1PHtSG8sPnt8jRfGvEOZEWa_G4FA@mail.gmail.com>	<54CC57CE.2080001@interlinked.me> <CAJ-VmonuAC9YFXR8jai5%2BKdW5q2x%2BjVVEABP0zRXiwHyWAC8pA@mail.gmail.com>

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On 01/30/15 23:20, Adrian Chadd wrote:
> Do you have brightness buttons anywhere? What happens when you set it
> through this API and then you use the backlight buttons?


I do, but FreeBSD doesn't have the needed WMI doodads to interact with
this, nor do I have the needed Dell laptop doodads in the kernel to test
otherwise.

To get /those/ working will require something else entirely. I have been
looking at the Linux drivers:

https://github.com/torvalds/linux/blob/master/drivers/platform/x86/dell-wmi.c
https://github.com/torvalds/linux/blob/master/drivers/platform/x86/dell-laptop.c

I'll save those for another day though, this is a bit off-topic. If
anyone else has laptop keys I'd like to see how they interact too.

--
Cheers,
Elizabeth



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