Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753499AbYA1JWE (ORCPT ); Mon, 28 Jan 2008 04:22:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753802AbYA1JVz (ORCPT ); Mon, 28 Jan 2008 04:21:55 -0500 Received: from nat-132.atmel.no ([80.232.32.132]:65168 "EHLO relay.atmel.no" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752792AbYA1JVy (ORCPT ); Mon, 28 Jan 2008 04:21:54 -0500 Date: Mon, 28 Jan 2008 10:21:49 +0100 From: Haavard Skinnemoen To: "Francis Moreau" Cc: "Jiri Slaby" , linux-kernel@vger.kernel.org Subject: Re: Question about DMA Message-ID: <20080128102149.545c0619@dhcp-252-066.norway.atmel.com> In-Reply-To: <38b2ab8a0801280055j6d1d235boe79e6aea058f8f96@mail.gmail.com> References: <38b2ab8a0801271251v1a9ea256w8fa4b9fcc620f742@mail.gmail.com> <479D06E0.3090601@gmail.com> <38b2ab8a0801280055j6d1d235boe79e6aea058f8f96@mail.gmail.com> Organization: Atmel Norway X-Mailer: Claws Mail 3.2.0 (GTK+ 2.12.1; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1008 Lines: 25 On Mon, 28 Jan 2008 09:55:58 +0100 "Francis Moreau" wrote: > My DMA controller has very little in common with ISA DMA one. But I'd like to > use it in a driver. This driver can do DMA but with the help of an external DMA > controller. It's only implement the "slave" side. So basically this driver needs > to configure one of the DMAC channels before transfering data. Have a look at this thread: http://lkml.org/lkml/2007/11/23/79 I'm planning to post an updated patch set this week that addresses the comments by Dan Williams, and that applies on top of the other DMA Engine patches that have been posted since then. Please let me know if you think this will work for your hardware. What platform are you working on, btw? Haavard -- 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/