From mboxrd@z Thu Jan 1 00:00:00 1970 From: sshtylyov@mvista.com (Sergei Shtylyov) Date: Tue, 28 Sep 2010 14:13:19 +0400 Subject: [PATCH v5 1/3] ARM: add CPPI 4.1 DMA support In-Reply-To: References: <201005152214.53993.sshtylyov@ru.mvista.com> Message-ID: <4CA1BFBF.2090102@mvista.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello. On 28-09-2010 13:13, Linus Walleij wrote: >> Add support for Texas Instuments Communication Port Programming Interface 4.1 >> (CPPI 4.1) used on OMAP-L1x/DA8xx and AM35x. > Sorry for late feedback ... >> +++ linux-davinci/arch/arm/common/cppi41.c > Can you migrate this driver to drivers/dma/cppi41.c and use the > DMAengine interface like so many DMA drivers we have created > recently, or is there some very special characteristics about this > DMA controller meriting it to be placed in arch/arm/*? I have once studied the possibility of doing this driver under drivers/dma/, and found that hardly achievable. Maybe I should try again though... > Yours, > Linus Walleij WBR, Sergei From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760219Ab0I1KPI (ORCPT ); Tue, 28 Sep 2010 06:15:08 -0400 Received: from mail-ew0-f46.google.com ([209.85.215.46]:39594 "EHLO mail-ew0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759682Ab0I1KPD (ORCPT ); Tue, 28 Sep 2010 06:15:03 -0400 Message-ID: <4CA1BFBF.2090102@mvista.com> Date: Tue, 28 Sep 2010 14:13:19 +0400 From: Sergei Shtylyov User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4 MIME-Version: 1.0 To: Linus Walleij CC: Sergei Shtylyov , linux-arm-kernel@lists.infradead.org, davinci-linux-open-source@linux.davincidsp.com, khilman@deeprootsystems.com, linux@arm.linux.org.uk, linux kernel , Dan Williams Subject: Re: [PATCH v5 1/3] ARM: add CPPI 4.1 DMA support References: <201005152214.53993.sshtylyov@ru.mvista.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello. On 28-09-2010 13:13, Linus Walleij wrote: >> Add support for Texas Instuments Communication Port Programming Interface 4.1 >> (CPPI 4.1) used on OMAP-L1x/DA8xx and AM35x. > Sorry for late feedback ... >> +++ linux-davinci/arch/arm/common/cppi41.c > Can you migrate this driver to drivers/dma/cppi41.c and use the > DMAengine interface like so many DMA drivers we have created > recently, or is there some very special characteristics about this > DMA controller meriting it to be placed in arch/arm/*? I have once studied the possibility of doing this driver under drivers/dma/, and found that hardly achievable. Maybe I should try again though... > Yours, > Linus Walleij WBR, Sergei