linux-kernel - Re: [PATCH 2.6.18-mm2] acpi: add backlight support to the sony

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Message-Id: <1160549944.3000.347.camel@laptopd505.fenrus.org>
Date:	Wed, 11 Oct 2006 08:59:04 +0200
From:	Arjan van de Ven <arjan@...radead.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Yu Luming <luming.yu@...il.com>,
	Matt Domsch <Matt_Domsch@...l.com>,
	Pavel Machek <pavel@....cz>, Andrew Morton <akpm@...l.org>,
	Alessandro Guido <alessandro.guido@...il.com>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	len.brown@...el.com, jengelh@...ux01.gwdg.de, gelma@...ma.net,
	ismail@...dus.org.tr
Subject: Re: [PATCH 2.6.18-mm2] acpi: add backlight support to the
	sony_acpi driver

On Tue, 2006-10-10 at 22:26 +0100, Matthew Garrett wrote:
> On Tue, Oct 10, 2006 at 10:32:46PM +0800, Yu Luming wrote:
> 
> > >From my understanding, a cute userspace App shouldn't have this kind
> > of logic:
> 
> (snip switching on hardware type)
> 
> > It should be:
> > 	just write/read  file in  /sys/class/backlight ,....
> 
> Yup, but to do that on Dell hardware is basically impossible. It'd be 
> nice if they implemented the ACPI video extension properly for future 
> hardware.

it'd also be nice if the linux-ready firmware developer kit had a test
for this, so that we can offer 1) a way to test this to the bios guys
and 2) encourage adding/note the lack easily


> 
-- 
if you want to mail me at work (you don't), use arjan (at) linux.intel.com

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