Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752691AbYLBUPH (ORCPT ); Tue, 2 Dec 2008 15:15:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751138AbYLBUOz (ORCPT ); Tue, 2 Dec 2008 15:14:55 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:44332 "EHLO UNKNOWN" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751214AbYLBUOz (ORCPT ); Tue, 2 Dec 2008 15:14:55 -0500 Date: Tue, 2 Dec 2008 21:14:42 +0100 From: Pavel Machek To: Matthew Garrett Cc: Cristiano Prisciandaro , Dave Jones , cpufreq@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/1] cpufreq: eeepc 900 frequency scaling driver Message-ID: <20081202201442.GA1504@ucw.cz> References: <1227454026.7262.59.camel@localhost> <20081123180409.GB7731@ucw.cz> <20081202161520.GA18252@srcf.ucam.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081202161520.GA18252@srcf.ucam.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 966 Lines: 25 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....) Sorry for the noise. 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/