Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030366AbWJKG73 (ORCPT ); Wed, 11 Oct 2006 02:59:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932447AbWJKG73 (ORCPT ); Wed, 11 Oct 2006 02:59:29 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:48552 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S932445AbWJKG72 (ORCPT ); Wed, 11 Oct 2006 02:59:28 -0400 Subject: Re: [PATCH 2.6.18-mm2] acpi: add backlight support to the sony_acpi driver From: Arjan van de Ven To: Matthew Garrett Cc: Yu Luming , Matt Domsch , 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 In-Reply-To: <20061010212615.GB31972@srcf.ucam.org> 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> Content-Type: text/plain Organization: Intel International BV Date: Wed, 11 Oct 2006 08:59:04 +0200 Message-Id: <1160549944.3000.347.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1005 Lines: 29 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/