From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Behlert Subject: Re: ACPI C4 support Date: Mon, 1 Mar 2004 19:09:58 +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20040301180958.GI2624@suse.de> References: <20040228161011.GA10448@elf.ucw.cz> <20040301152810.GT2869@poupinou.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20040301152810.GT2869-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Bruno Ducrot Cc: Pavel Machek , ACPI mailing list , trenn-l3A5Bk7waGM@public.gmane.org, len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org List-Id: linux-acpi@vger.kernel.org Moin, On Mar 01, 04 16:28:10 +0100, Bruno Ducrot wrote: > On Sat, Feb 28, 2004 at 05:10:11PM +0100, Pavel Machek wrote: > > Hi! > > Thomas told me: > > >what about C4 - Cn states in the kernel implementation? > > >A short look into the /proc/acpi/processor/.../power file let me think > > >that only C0-C3 is supported by the kernel, even specification talks > > >about Cn states? > > As a first step, it would be nice if kernel at least used C0..C3 if > > the machine supports them... This should do the trick. Does it look > > okay? > > No. pblk_length is 0 or 6. Not 5 nor 7 ;) Sorry, I don't understand: We've a Laptop with a DSDT with Processor (\_PR.CPU0, 0x01, 0x00001010, 0x07) in it. Comment from the responsible BIOS-team: "Our processor block object is 7 bytes in length because we also support C4 (P_LVL4) which is at +6. Therefore, the size/length must be reported as 7 and not 6." Is the '7' the BIOS-developer mentioned the same '7' as mentioned by you? > > Look at http://bugzilla.kernel.org/show_bug.cgi?id=1958 > > Note that I don't have time to work on it by now. When the acpi video > extension will be OK, I will rework on that one unless someone else do > the work. Thanks. > > -- > Bruno Ducrot caio, Stefan -- Stefan Behlert, SUSE LINUX AG, Mobile Devices Maxfeldstr. 5, D-90409 Nuernberg, Germany Phone +49-(0)911-74053-173 ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. Build and deploy apps & Web services for Linux with a free DVD software kit from IBM. Click Now! http://ads.osdn.com/?ad_id=1356&alloc_id=3438&op=click