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Message-ID: <4F69CB5F.70002@shealevy.com>
Date: Wed, 21 Mar 2012 08:36:47 -0400
From: Shea Levy <shea@...alevy.com>
To: Seth Forshee <seth.forshee@...onical.com>
CC: Matthew Garrett <mjg@...hat.com>,
platform-driver-x86@...r.kernel.org,
Richard Purdie <rpurdie@...ys.net>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 0/2] Add driver for Apple gmux device
Hi Seth,
On 03/16/2012 03:41 PM, Seth Forshee wrote:
> Apple laptops with hybrid graphics have a device named gmux that is used
> for switching between GPUs and backlight control. On many models this is
> the only reliable method for controlling the backlight.
>
> This series adds initial support for the gmux device, along with
> anciallary support for disabling apple_bl when the gmux device is
> detected. Initially only backlight control is supported.
>
>
I've done some basic testing on my MBP 5,3 (just setting a few
brightness levels, nothing fancy), and it all works, so feel free to add
my basic
Tested-by: Shea Levy <shea@...alevy.com>
if you wish. Please let me know if you need testing for future gmux
features.
A few questions:
* I'm using nouveau, and with the gmux I have both gmux_backlight
and nv_backlight (which never worked) in /sys/class/backlight, is this
expected?
* Is there anything I can do to test the backlight interface in
addition to setting brightness levels?
* Besides the sysfs backlight interface, are there any other
userspace-visible changes your driver makes that I should test?
Cheers,
Shea Levy
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