From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Boichat Subject: Re: [PATCH 9/10] i810fb: Add i2c/DDC support Date: Sun, 04 Sep 2005 15:51:31 +0200 Message-ID: <1125841891.7590.52.camel@tom> References: <43177635.8020005@gmail.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1EBuuN-0000zt-9q for linux-fbdev-devel@lists.sourceforge.net; Sun, 04 Sep 2005 06:51:43 -0700 Received: from 26.mail-out.ovh.net ([213.186.42.179]) by mail.sourceforge.net with esmtps (TLSv1:DES-CBC3-SHA:168) (Exim 4.44) id 1EBuuK-0006bk-Tp for linux-fbdev-devel@lists.sourceforge.net; Sun, 04 Sep 2005 06:51:43 -0700 In-Reply-To: <43177635.8020005@gmail.com> Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: "Antonino A. Daplas" Cc: linux-fbdev-devel@lists.sourceforge.net Hello Antonino, I have an information that may interest you: On i865G, you can connect an AGP daughter card to add a DVI connector. The I2C bus of this connector is accessed using the register that I called GPIO"C", and its offset is 0x0501C (it is not documented in Intel datasheets). It works exactly like the busses on GPIOA (0x05010) and GPIOB (0x05014), i.e. you can reuse the same functions. BTW, you could merge i810i2c_* and i810ddc_* functions, as they are the same excepting the register address (you did this in rivafb). Also note that your code to read/write to the I2C busses has been reported to work on i915G (I don't know about the real framebuffer support). Best regards, Nicolas On Fri, 2005-09-02 at 05:44 +0800, Antonino A. Daplas wrote: > Add ddc/i2c support for i810fb. This will allow the driver to > get display information, especially for monitors with fickle timings. > The i2c support depends on CONFIG_FB_I810_GTF. > > Changed __init* to __devinit* > > Signed-off-by: Antonino Daplas > [snip] ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf