Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422793AbXBGX5f (ORCPT ); Wed, 7 Feb 2007 18:57:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422821AbXBGX5f (ORCPT ); Wed, 7 Feb 2007 18:57:35 -0500 Received: from jack.tiscali.it ([213.205.33.53]:33282 "EHLO jack.tiscali.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422793AbXBGX5e (ORCPT ); Wed, 7 Feb 2007 18:57:34 -0500 Date: Thu, 8 Feb 2007 00:57:28 +0100 From: Luca Tettamanti To: linux-fbdev-devel@lists.sourceforge.net Cc: Andrew Morton , Dave Airlie , linux-kernel@vger.kernel.org Subject: Re: [Linux-fbdev-devel] [PATCH] nvidiafb: allow ignoring EDID info Message-ID: <20070207235728.GA28695@dreamland.darkstar.lan> References: <20070128160831.fb51347f.akpm@osdl.org> <21d7e9970701281612q56b694edp6efd1a5556dea3fe@mail.gmail.com> <20070128162907.370f5476.akpm@osdl.org> <21d7e9970701281639w57edc2efw4ba620d4c1bdcee7@mail.gmail.com> <20070130203301.GA15067@dreamland.darkstar.lan> <20070204201713.GA12867@dreamland.darkstar.lan> <20070205201824.GA13431@dreamland.darkstar.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1228 Lines: 34 Il Mon, Feb 05, 2007 at 10:28:36PM +0100, Giuseppe Bilotta ha scritto: > On 2/5/07, Luca Tettamanti wrote: > > get-edid uses the BIOS, while the other two talk directly over the I2C > > bus. > > > > Try loading i2c-dev (I2C_CHARDEV); With i2cdump[1] you can read the EDID > > block, which resides at address 0x50: > > > > i2cdump N 0x50 (where N is the bus number) > > > > If you are unshure about bus number try with all the available > > /dev/i2c-* devices (you may want to unload HW monitor drivers first, so > > you don't poke at random stuff). [...] > There is no such thing as /dev/i2c* UNLESS I load nvidiafb. Of course :) > When I > load that, I get three busses (i2c-0, -1, and -2), but i2cdump N 0x50 > gives me a nice tableau of X's all around, for all values of N. There may be a bug in the serial clock line control, at least the code looks strange. I'll check and come back with a patch ASAP. Luca -- "Sei l'unica donna della mia vita". (Adamo) - 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/