Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933394Ab1FBKPD (ORCPT ); Thu, 2 Jun 2011 06:15:03 -0400 Received: from adelie.canonical.com ([91.189.90.139]:37522 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933310Ab1FBKPA (ORCPT ); Thu, 2 Jun 2011 06:15:00 -0400 Message-ID: <4DE7629D.80205@canonical.com> Date: Thu, 02 Jun 2011 18:14:53 +0800 From: Ike Panhc User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110424 Thunderbird/3.1.10 MIME-Version: 1.0 To: Corentin Chary CC: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Matthew Garrett , Randy Dunlap Subject: Re: [PATCH 2/3] ideapad: Add nodes in sysfs References: <1307006553-12667-1-git-send-email-ike.pan@canonical.com> <1307006645-12702-1-git-send-email-ike.pan@canonical.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 744 Lines: 18 On 06/02/2011 05:48 PM, Corentin Chary wrote: > Hi Ike, > Why do you want to add /sys/devices/platform/ideapad/brightness and > /sys/devices/platform/ideapad/backlight ? > Both of these files should be handled by the generic backlight class > (using brightness and bl_power). This is within VPC2004. In DSDT they are different device from generic backlight. and I try bl_power but can not turning off power of whole LCD. No idea how screensaver do it, looks like just cut off video signal. -- 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/