From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756901AbZHNRhX (ORCPT ); Fri, 14 Aug 2009 13:37:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756691AbZHNRhW (ORCPT ); Fri, 14 Aug 2009 13:37:22 -0400 Received: from outbound-mail-127.bluehost.com ([67.222.38.27]:51530 "HELO outbound-mail-127.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756328AbZHNRhV (ORCPT ); Fri, 14 Aug 2009 13:37:21 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=OiPa6UQjaumQN7/W636yQYXtdYQ7rSA7eR8iNILDYeGWmcUf1TYSBdmSG6EYkfGHF3+OD+DGg/vCIehJrQ3+hyk+Oeg6HQizMmsRpf+RZ3c7LjHbPdnmWt9/14QxEABB; Date: Fri, 14 Aug 2009 10:37:19 -0700 From: Jesse Barnes To: Matthew Garrett Cc: "Rafael J. Wysocki" , Alan Stern , Greg KH , LKML , Linux-pm mailing list , linux-pci@vger.kernel.org, linux-usb@vger.kernel.org Subject: Re: [RFC] PCI: Runtime power management Message-ID: <20090814103719.79e99d91@jbarnes-g45> In-Reply-To: <20090813002925.GA2532@srcf.ucam.org> References: <200908081625.57333.rjw@sisk.pl> <200908092313.05541.rjw@sisk.pl> <20090813002925.GA2532@srcf.ucam.org> X-Mailer: Claws Mail 3.7.2 (GTK+ 2.17.5; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 75.111.28.251 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 13 Aug 2009 01:29:25 +0100 Matthew Garrett wrote: > I got a fixed BIOS from Dell and have been able to get this working > now. It seems entirely happy with USB, but I'd like some sanity > checks on whether I'm doing this correctly. There's certainly a > couple of quirks related to setting the ACPI GPE type that would need > a little bit of work in the ACPI layer, and it breaks ACPI-mediated > PCI hotplug though that's easy enough to fix by just calling into the > hotplug code from the core notifier. > > This patch builds on top of Rafael's work on systemwide runtime power > management. It supports suspending and resuming PCI devices at > runtime, enabling platform wakeup events that allow the devices to > automatically resume when appropriate. It currently requires platform > support, but PCIe setups could be supported natively once native PCIe > PME code has been added to the kernel. PCI bits look pretty good to me, though Rafael should take a look too. Card readers and firewire could benefit from similar treatment, maybe that would get us to .5W territory on some machines. -- Jesse Barnes, Intel Open Source Technology Center