Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762900AbZCQIbK (ORCPT ); Tue, 17 Mar 2009 04:31:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1762979AbZCQIax (ORCPT ); Tue, 17 Mar 2009 04:30:53 -0400 Received: from fg-out-1718.google.com ([72.14.220.157]:31615 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763030AbZCQIaw convert rfc822-to-8bit (ORCPT ); Tue, 17 Mar 2009 04:30:52 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=wla5Z1jLnCosAFRq6sYUPEPPKPok7/bD7pyqNHCeGc5JEePDo2Ik1Xc6tbqJ4FSXXE vjS5BC1BxHbjx642T7RA+gbDT7PyHLNFnUnkbyKlsmKJKnYrHpZMLD3l0FJzENojwoLW KgM1knMVuFTD8lDZQwEG4Fy7F5bDyBwiB9GKE= MIME-Version: 1.0 In-Reply-To: <20090316082952.GA1963@elf.ucw.cz> References: <1227454026.7262.59.camel@localhost> <20081123180409.GB7731@ucw.cz> <20081202161520.GA18252@srcf.ucam.org> <20081202201442.GA1504@ucw.cz> <20090316082952.GA1963@elf.ucw.cz> Date: Tue, 17 Mar 2009 09:30:48 +0100 Message-ID: Subject: Re: [PATCH 1/1] cpufreq: eeepc 900 frequency scaling driver From: Fabio Comolli To: Pavel Machek Cc: Len Brown , Matthew Garrett , Cristiano Prisciandaro , Dave Jones , cpufreq@vger.kernel.org, linux-kernel@vger.kernel.org, tom@compton.nu Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2253 Lines: 56 Well, I see that this thread has resumed after three months of being idle. Is there a chance that either Cristiano's or Tom's version can be included? By the way, I currently run my eeepc 900 with cpufreq disabled. Looking at the patch, with Tom's mods to eeepc_laptop I could do the same, am I right? I see only an include for cpufreq.h and nothing else. Thanks, Fabio On Mon, Mar 16, 2009 at 9:29 AM, Pavel Machek wrote: > On Mon 2009-03-16 00:24:18, Len Brown wrote: >> >> On Tue, 2 Dec 2008, Pavel Machek wrote: >> >> > On Tue 2008-12-02 16:15:21, Matthew Garrett wrote: >> > > On Sun, Nov 23, 2008 at 07:04:09PM +0100, Pavel Machek wrote: >> > > >> > > > Is this really needed? Could we simply talk to the cpu directly, >> > > > without help of ACPI? >> > > >> > > No. The ACPI write ends up talking to the embedded controller and some >> > > io ports. >> > >> > Oops... I always knew that eee-s are broken by design (reporting >> > battery percent as mWh, etc...) but I did not realize how bad it >> > is. (ACPI has perfectly standard cpu frequency scaling interface, even >> > if it is not used too often these days....) >> >> Huh? >> >> What cpufreq driver is deployed more broadly than acpi-cpufreq? >> AFAIK, Linux uses it on nearly every ACPI compliant Intel-based >> system that has frequency scaling. > > Problem seems to be that eee uses custom ACPI methods > (switch_to_fast_clock(0/1)-like), not anything acpi-cpufreq could > drive... Broken by design :-(. >                                                                        Pavel > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html > -- > 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/ > -- 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/