From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Domsch Subject: Re: [PATCH 2.6.18-mm2] acpi: add backlight support to the sony_acpi driver Date: Tue, 10 Oct 2006 22:02:32 -0500 Message-ID: <20061011030232.GA27693@lists.us.dell.com> References: <20060930190810.30b8737f.alessandro.guido@gmail.com> <20061005103657.GA4474@ucw.cz> <20061006211751.GA31887@lists.us.dell.com> <200610102232.46627.luming.yu@gmail.com> <20061010212615.GB31972@srcf.ucam.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from ausc60ps301.us.dell.com ([143.166.148.206]:58541 "EHLO ausc60ps301.us.dell.com") by vger.kernel.org with ESMTP id S1030532AbWJKDCa (ORCPT ); Tue, 10 Oct 2006 23:02:30 -0400 Content-Disposition: inline In-Reply-To: <20061010212615.GB31972@srcf.ucam.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Matthew Garrett Cc: Yu Luming , Pavel Machek , Andrew Morton , Alessandro Guido , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, len.brown@intel.com, jengelh@linux01.gwdg.de, gelma@gelma.net, ismail@pardus.org.tr On Tue, Oct 10, 2006 at 10:26:15PM +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. Yes, our BIOS teams are looking to do exactly that. I wouldn't expect such a change to be propogated back to earlier released systems though. -- Matt Domsch Software Architect Dell Linux Solutions linux.dell.com & www.dell.com/linux Linux on Dell mailing lists @ http://lists.us.dell.com