linux-kernel - Re: [Intel-gfx] [PATCH] i915: Register ACPI video even when not modesetting

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Message-ID: <20090417004413.GA869@srcf.ucam.org>
Date:	Fri, 17 Apr 2009 01:44:13 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [Intel-gfx] [PATCH] i915: Register ACPI video even when not modesetting

On Thu, Apr 16, 2009 at 09:44:11AM +0200, Tino Keitel wrote:
> On Wed, Apr 15, 2009 at 21:46:36 +0100, Matthew Garrett wrote:
> > The ACPI video driver defers registration to the i915 driver if the 
> > system supports opregion-mediated backlight control. This registration 
> > was only being performed in the KMS case. Ensure it's done even if we 
> > don't have modesetting enabled.
> 
> Does this provide backlight control even without DRI enabled, or just
> without KMS enabled?

Just without KMS being enabled. If your backlight control doesn't work 
without dri, that's because your backlight control requires a 
kernel-level component to change the backlight registers in response to 
an IRQ (ie, DRI)

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