From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laxman Dewangan Subject: Re: [PATCH V5 2/2] dma: tegra: add dmaengine based dma driver Date: Wed, 6 Jun 2012 23:22:27 +0530 Message-ID: <4FCF98DB.5050000@nvidia.com> References: <1338960327-31453-1-git-send-email-ldewangan@nvidia.com> <1338960327-31453-2-git-send-email-ldewangan@nvidia.com> <4FCF97A5.5040008@wwwdotorg.org> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4FCF97A5.5040008-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Stephen Warren Cc: "vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org" , "dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org" , "grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org" , "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-tegra@vger.kernel.org On Wednesday 06 June 2012 11:17 PM, Stephen Warren wrote: > On 06/05/2012 11:25 PM, Laxman Dewangan wrote: >> Add dmaengine based NVIDIA's Tegra APB DMA driver. >> This driver support the slave mode of data transfer from >> peripheral to memory and vice versa. >> The driver supports for the cyclic and non-cyclic mode >> of data transfer. > Acked-by: Stephen Warren > > Laxman, what are you plans for enabling this and replacing the existing > non-dmaengine APB DMA driver? We will need to convert: > > * The fuse WAR stuff in arch/arm/mach-tegra > * The ASoC driver in sound/soc/tegra > > This will require some thought and dependency management between the > various subsystems. Currently following drive using the non-dmanegine apb dma driver: fuse SPI ASoc. I want to first have this dma driver in the tree and then I will have the series of patches to use this dmaengine dma driver and delete the old apb dma driver. So just waiting for this driver to be in. > Vinod, > > It may be best to apply this series along in a topic branch that you > merge into the dmaengine branch, and I can pull into Tegra if/when I > need. Or, if you ack it, I can take it all through the Tegra tree if you > want. That wouldn't allow patch 1 to be use by others though. > I like this series to be taken by Vinod. And then pull the change in to Tegra tree for further dependency change. Reason is: - If there is any dmaengine driver change/enhancement, then tegra dma driver will also be inline. - Taking on tegra tree help to implement the clock framework which is going on. - Also fuse related changes will be in tegra tree. - Asoc and SPI can be also taken in the tegra tree or may be their corresponding tree based on how much other changes are there, -Deletion of old driver is in Tegra tree. > Thanks.