From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: Re: newbie: fb specs and indirect VRAM access Date: Thu, 21 Aug 2008 15:21:15 +0200 (CEST) Message-ID: References: <47858.200.178.190.130.1219177894.squirrel@mail2.icmc.usp.br> <34825.200.178.190.130.1219322627.squirrel@mail2.icmc.usp.br> <45a44e480808210609h3dadb6bdo7512eb720f54f49f@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1KWA6K-0002ZZ-N5 for linux-fbdev-devel@lists.sourceforge.net; Thu, 21 Aug 2008 06:21:20 -0700 Received: from gerard.telenet-ops.be ([195.130.132.48]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1KWA6I-0006hd-U8 for linux-fbdev-devel@lists.sourceforge.net; Thu, 21 Aug 2008 06:21:20 -0700 In-Reply-To: <45a44e480808210609h3dadb6bdo7512eb720f54f49f@mail.gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: Jaya Kumar Cc: linux-fbdev-devel@lists.sourceforge.net On Thu, 21 Aug 2008, Jaya Kumar wrote: > On Thu, Aug 21, 2008 at 8:54 AM, Geert Uytterhoeven > wrote: > > On Thu, 21 Aug 2008, Jorge Marques Pelizzoni wrote: > >> Jorge Marques Pelizzoni escreveu: > >> > I am considering implementing a frame buffer device for a mobile platform > >> > (LPC2400 on uCLinux) that, as far as I can tell, seems to lack one. Well, > > linux/Documentation/fb/deferred_io.txt > > One note about this. If you're using LPC2400, I think that's an ARM7. > TDMI so no MMU which I think matches your mention of uclinux. > Unfortunately, defio has a dependency on MMU. There are other > possibilities to achieve the same effect but I'm not familiar with the > 2400 and I'm not sure if it can do it. Oops, sorry, didn't notice that part. Yes, it depends on the presence of a MMU. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/