From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lucas Correia Villa Real Subject: Re: Re: Fbdev magics Date: Tue, 11 May 2004 00:40:29 -0300 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <200405110040.29985.lucasvr@gobolinux.org> References: <200405050027.58630.lucasvr@terra.com.br> <200405070026.54372.lucasvr@gobolinux.org> <200405072133.37300.adaplas@hotpop.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1BNO8A-0004ru-4i for linux-fbdev-devel@lists.sourceforge.net; Mon, 10 May 2004 20:40:34 -0700 Received: from chiapa.terra.com.br ([200.154.55.224]) by sc8-sf-mx2.sourceforge.net with esmtp (Exim 4.30) id 1BNO89-0004N3-Mb for linux-fbdev-devel@lists.sourceforge.net; Mon, 10 May 2004 20:40:33 -0700 Received: from tucuman.terra.com.br (tucuman.terra.com.br [200.154.55.139]) by chiapa.terra.com.br (Postfix) with ESMTP id A19D3EC434 for ; Tue, 11 May 2004 00:40:28 -0300 (BRT) Received: from ummagumma.ozzmosis.net (200-203-051-117.nhoce7002.dsl.brasiltelecom.net.br [200.203.51.117]) (authenticated user lucasvr) by tucuman.terra.com.br (Postfix) with ESMTP id 7C2683C002 for ; Tue, 11 May 2004 00:40:28 -0300 (BRT) In-Reply-To: <200405072133.37300.adaplas@hotpop.com> Content-Disposition: inline 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: linux-fbdev-devel@lists.sourceforge.net On Friday 07 May 2004 10:33, Antonino A. Daplas wrote: > On Friday 07 May 2004 11:26, Lucas Correia Villa Real wrote: > > On Thursday 06 May 2004 06:17, Geert Uytterhoeven wrote: > > ... > > > > > > I've seen some LCD display drivers for embedded devices that handled it > > directly with request_irq() on 2.4. As I could see from the bottom layers > > of fbdev, an interrupt handler in a driver doesn't seem to hurt anyone > > there.. or am I wrong? > > Within the console, you probably can't use interrupts, at least in 2.4.x. > However, there are patches around that uses an interrupt service especially > with waiting for vrefresh. I've done it with the i810fb (around 2.4.18), > and I think matroxfb has one too. Hi Tony, I took a read into drivers/char/console.c, but it isn't clear to me why it's not possible (or better yet, advised) to install interrupt handlers within the console. Is it because tty devices are already called from interrupts? Cheers, Lucas ------------------------------------------------------- This SF.Net email is sponsored by Sleepycat Software Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver higher performing products faster, at low TCO. http://www.sleepycat.com/telcomwpreg.php?From=osdnemail3