From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758147Ab2CMRHR (ORCPT ); Tue, 13 Mar 2012 13:07:17 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:55160 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755546Ab2CMRHP (ORCPT ); Tue, 13 Mar 2012 13:07:15 -0400 Date: Tue, 13 Mar 2012 17:07:10 +0000 From: Matthew Garrett To: Akio Idehara Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, Charles@schwieters.org, corentin.chary@gmail.com, seth.forshee@canonical.com Subject: Re: [PATCH] toshiba_acpi: Add support for transflective LCD Message-ID: <20120313170710.GB17110@srcf.ucam.org> References: <4F3ECEED.9000206@gmail.com> <20120312141118.GB11375@srcf.ucam.org> <4F5F7E2F.30305@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4F5F7E2F.30305@gmail.com> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 14, 2012 at 02:04:47AM +0900, Akio Idehara wrote: > BTW, I have one question about disabling backlight interface. > My toshiba laptop has three sysfs backlight interfaces, > "acpi_video0", "intel_backlight" and "toshiba". > Fedora16 is always using "acpi_video0" interface. > If I add acpi_backlight=vendor in boot param, > then Fedora16 uses "intel_backlight". > # "toshiba" is lowest priority. > So I want to know how to disable "intel_backlight" interface. > Or enable "toshiba" interface only. There's no general way to - the acpi interface, if present, should always be the preferred one. Hooking the transflective control into that is going to be more difficult. -- Matthew Garrett | mjg59@srcf.ucam.org