From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763339AbXGKMmp (ORCPT ); Wed, 11 Jul 2007 08:42:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758298AbXGKMmh (ORCPT ); Wed, 11 Jul 2007 08:42:37 -0400 Received: from mail.gmx.net ([213.165.64.20]:42994 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1757013AbXGKMmg (ORCPT ); Wed, 11 Jul 2007 08:42:36 -0400 X-Authenticated: #27760234 X-Provags-ID: V01U2FsdGVkX193c6M64fh3g+2TtzdemWEXlcWunC9ZUTUJEm6+38 K2ZcXcQCadVGSU Date: Wed, 11 Jul 2007 14:42:33 +0200 From: Richard Mittendorfer To: linux-kernel Subject: PCI devices power management, w/o sysfs? [Was: Re: Liunx power consumption on laptops ...] Message-Id: <20070711144233.92a584fd.delist@gmx.net> In-Reply-To: <468D4D82.8030009@linux.intel.com> References: <468D4D82.8030009@linux.intel.com> X-Mailer: Sylpheed version 2.3.0beta5 (GTK+ 2.8.20; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Greetings *! I'm looking for a way to disable (PM low power mode) some devices I rarely/never use on my laptop to save some more power. With 2.6.17, IIRC, I was able to echo -n 2 > /sys/bus/pci/../power to put things into low power mode. (I don't know if it ever worked, but at least it looked like it did.) ..-2.6.22(-ck1) w/ CONFIG_PM_SYSFS_DEPRECATED doesn't let me change this state. evident :) -----------------^^^^^^^^^^ Is there a proper way to do this (setpci, if I'd know the registers)? Is it gone/going inside drivers (like USB_SUSPEND) and I don't have to worry? I currently don't load the modules in question - but I'm not sure if it helps, as they might already be powered on by PCI initialization/BIOS (/sys/bus/pci/../state cats "0"). THX, ritch