From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthew Garrett <mjg59@srcf.ucam.org>
Subject: Re: [PATCH v3 2/2] drivers: i915: Default max backlight
 brightness value
Date: Tue, 8 Nov 2011 22:10:13 +0000
Message-ID: <20111108221013.GA19222@srcf.ucam.org>
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To: Simon Que <sque@chromium.org>
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On Tue, Nov 08, 2011 at 02:05:14PM -0800, Simon Que wrote:
> On Tue, Nov 8, 2011 at 1:42 PM, Matthew Garrett <mjg59@srcf.ucam.org> wrote:
> 
> > I feel like I'm missing something here. Where's the firmware getting its
> > initial value from?
> 
> 
> My understanding is that normally, the firmware's VBIOS can program the
> value of the PWM register.  But if the firmware doesn't have the VBIOS
> initialization code, it can still provide an initial value using this new
> param, as part of the kernel command line.  Either way, it's up to the
> person writing or selecting the firmware to decide what initial value to
> provide.

So the firmware doesn't set up graphics itself, it's entirely up to the 
kernel? What hardware is this for?

-- 
Matthew Garrett | mjg59@srcf.ucam.org