From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laxman Dewangan Subject: Re: [PATCH V1] dmaengine: tegra: add dma driver Date: Wed, 25 Apr 2012 15:12:33 +0530 Message-ID: <4F97C709.2060807@nvidia.com> References: <1334912896-4614-1-git-send-email-ldewangan@nvidia.com> <1334920487.31825.98.camel@vkoul-udesk3> <4F9153AF.7020901@nvidia.com> <1335170491.31825.104.camel@vkoul-udesk3> <4F95483F.5020005@nvidia.com> <20120423130659.GA22186@n2100.arm.linux.org.uk> <4F95567E.3090605@nvidia.com> <4F97BD67.1050300@nvidia.com> <1335346425.31825.118.camel@vkoul-udesk3> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1335346425.31825.118.camel@vkoul-udesk3> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Vinod Koul Cc: Russell King - ARM Linux , "dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org" , "grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org" , "rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org" , Stephen Warren , "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-tegra@vger.kernel.org On Wednesday 25 April 2012 03:03 PM, Vinod Koul wrote: > On Wed, 2012-04-25 at 14:31 +0530, Laxman Dewangan wrote: >> I had a communication with Russell on another change thread and >> understand that some more work need to be done in virt_chan to support >> cyclic one. >> >> I want to have the cyclic dma support in my driver so I want to go on >> following steps: >> 1. I will post the patch for tegra dma which will not use the virt_dma >> so that my driver will be independent of Russel's change. > which driver? A new driver for cyclic support only or on top of > Russell's changes? I am referring the Nvidia Tegra's APB dma driver. This will be completely new driver based on dmaengine. We have old dma driver under mach-tegra/dma.c which has tegra specific apis. Want to move this driver to generic dmaengine based api. Russell is working on Omap's dma driver. These are completely independent driver. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757502Ab2DYJoA (ORCPT ); Wed, 25 Apr 2012 05:44:00 -0400 Received: from hqemgate03.nvidia.com ([216.228.121.140]:14112 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755406Ab2DYJn6 (ORCPT ); Wed, 25 Apr 2012 05:43:58 -0400 X-PGP-Universal: processed; by hqnvupgp05.nvidia.com on Wed, 25 Apr 2012 02:43:58 -0700 Message-ID: <4F97C709.2060807@nvidia.com> Date: Wed, 25 Apr 2012 15:12:33 +0530 From: Laxman Dewangan User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101208 Thunderbird/3.1.7 MIME-Version: 1.0 To: Vinod Koul CC: Russell King - ARM Linux , "dan.j.williams@intel.com" , "grant.likely@secretlab.ca" , "rob.herring@calxeda.com" , "linux-kernel@vger.kernel.org" , "devicetree-discuss@lists.ozlabs.org" , Stephen Warren , "linux-tegra@vger.kernel.org" Subject: Re: [PATCH V1] dmaengine: tegra: add dma driver References: <1334912896-4614-1-git-send-email-ldewangan@nvidia.com> <1334920487.31825.98.camel@vkoul-udesk3> <4F9153AF.7020901@nvidia.com> <1335170491.31825.104.camel@vkoul-udesk3> <4F95483F.5020005@nvidia.com> <20120423130659.GA22186@n2100.arm.linux.org.uk> <4F95567E.3090605@nvidia.com> <4F97BD67.1050300@nvidia.com> <1335346425.31825.118.camel@vkoul-udesk3> In-Reply-To: <1335346425.31825.118.camel@vkoul-udesk3> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 25 April 2012 03:03 PM, Vinod Koul wrote: > On Wed, 2012-04-25 at 14:31 +0530, Laxman Dewangan wrote: >> I had a communication with Russell on another change thread and >> understand that some more work need to be done in virt_chan to support >> cyclic one. >> >> I want to have the cyclic dma support in my driver so I want to go on >> following steps: >> 1. I will post the patch for tegra dma which will not use the virt_dma >> so that my driver will be independent of Russel's change. > which driver? A new driver for cyclic support only or on top of > Russell's changes? I am referring the Nvidia Tegra's APB dma driver. This will be completely new driver based on dmaengine. We have old dma driver under mach-tegra/dma.c which has tegra specific apis. Want to move this driver to generic dmaengine based api. Russell is working on Omap's dma driver. These are completely independent driver.