Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762935AbZCQI7b (ORCPT ); Tue, 17 Mar 2009 04:59:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752049AbZCQI7V (ORCPT ); Tue, 17 Mar 2009 04:59:21 -0400 Received: from mail-ew0-f177.google.com ([209.85.219.177]:39790 "EHLO mail-ew0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751911AbZCQI7U convert rfc822-to-8bit (ORCPT ); Tue, 17 Mar 2009 04:59:20 -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=Ix8NZKbXYZsulPT/8HOUVtUUX/w+OBgYDRuvnv9UVkCipwUrgGsSYKQP88yBRZlid8 tf5Cy2HZ/1ixlG2WrkEsmwgQXBIVMBi5ZOyxtf9B97gHzj6ltRtWeArZuk7i6FGmXrvY 1y1BO19MmD4SqKNQRt+AyKJrlymWa8+heHjQk= MIME-Version: 1.0 In-Reply-To: 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 09:59:17 +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: 2469 Lines: 60 Well, replying to myself: it doesn't even compile with CONFIG_CPU_FREQ=n On Tue, Mar 17, 2009 at 9:30 AM, Fabio Comolli wrote: > 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/