From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sven Luther Subject: Re: [PATCH]: EDID parser Date: Thu, 3 Apr 2003 19:18:20 +0200 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <20030403171820.GE1092@iliana> References: <1049383273.11742.0.camel@dhcp22.swansea.linux.org.uk> <20030403171009.GC1092@iliana> <1049386531.11747.32.camel@dhcp22.swansea.linux.org.uk> Mime-Version: 1.0 Return-path: Received: from smtp4.wanadoo.fr ([193.252.22.28] helo=mwinf0301.wanadoo.fr) by sc8-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 1918MB-0002el-00 for ; Thu, 03 Apr 2003 09:18:31 -0800 Content-Disposition: inline In-Reply-To: <1049386531.11747.32.camel@dhcp22.swansea.linux.org.uk> Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Alan Cox Cc: Sven Luther , Geert Uytterhoeven , Petr Vandrovec , James Simmons , Linux Fbdev development list , Linux Kernel Mailing List On Thu, Apr 03, 2003 at 05:15:32PM +0100, Alan Cox wrote: > On Iau, 2003-04-03 at 18:10, Sven Luther wrote: > > It has two outputs, where i can hook either a DVI or a VGA monitor. Each > > of these video outputs correspond to a viewport, and there is hardware > > which will let you set the output timings and the dot clock. You also > > have to configure which part of the framebuffer you are reading, and > > eventually setup a scaller to scale the pixels you read to the correct > > output buffer. You also have for each head a DDC/I2C bus you can use to > > speak with the monitor. > > Very common except lower end stuff generally has a single frame buffer > that both show and cannot be split or scanned by multiple outputs at > different rates. So, using the terminology of Petr's graph, you have only one CRTC, with two possible outputs, or maybe you have two CRTC but which needs to be synchronized between them ? Friendly, Sven Luther ------------------------------------------------------- This SF.net email is sponsored by: ValueWeb: Dedicated Hosting for just $79/mo with 500 GB of bandwidth! No other company gives more support or power for your dedicated server http://click.atdmt.com/AFF/go/sdnxxaff00300020aff/direct/01/