linux-kernel - Re: [PATCH v2] platform/x86: Add driver for Apple gmux device

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Message-ID: <CACxGe6uc+LZjuMLS5DZELzAsHsnhObL6mdPzdMnNVbfriTfNwg@mail.gmail.com>
Date:	Wed, 29 Feb 2012 12:43:23 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Grant Likely <grant.likely@...retlab.ca>,
	Matthew Garrett <mjg@...hat.com>,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] platform/x86: Add driver for Apple gmux device

On Wed, Feb 29, 2012 at 11:53 AM, Seth Forshee
<seth.forshee@...onical.com> wrote:
> On Wed, Feb 29, 2012 at 11:46:39AM -0600, Grant Likely wrote:
>> On Wed, Feb 22, 2012 at 8:37 AM, Seth Forshee
>> <seth.forshee@...onical.com> wrote:
>> > Apple laptops with hybrid graphics have a device named gmux that
>> > controls the muxing of the LVDS panel between the GPUs as well as screen
>> > brightness. This driver adds support for the gmux device. Only backlight
>> > control is supported initially.
>> >
>> > Signed-off-by: Seth Forshee <seth.forshee@...onical.com>
>>
>> Works for me.
>>
>> Tested-by: Grant Likely <grant.likely@...retlab.ca>
>>
>> Now I just need to figure out how to get the desktop backlight widget
>> to use gmux_backlight instead of acpi_video0...
>
> The easy way is to pass acpi_backlight=vendor to the kernel, then you
> won't have acpi_vidoe0.

That did it, thanks.  I'm assume something is in the works to set it
up automatically?

g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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