From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: Re: [PATCH v5 1/3] ARM: add CPPI 4.1 DMA support Date: Mon, 3 Jan 2011 22:44:17 +0200 Message-ID: <20110103204416.GA2240@legolas.emea.dhcp.ti.com> References: <201005152214.53993.sshtylyov@ru.mvista.com> <4D21F3F2.6090302@mvista.com> <20110103163447.GB2911@n2100.arm.linux.org.uk> <19F8576C6E063C45BE387C64729E739404BD3F2C4D@dbde02.ent.ti.com> <4D220246.5020303@mvista.com> <19F8576C6E063C45BE387C64729E739404BD3F2C58@dbde02.ent.ti.com> Reply-To: balbi@ti.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Return-path: Received: from na3sys009aog102.obsmtp.com ([74.125.149.69]:45517 "EHLO na3sys009aog102.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751155Ab1ACUoW (ORCPT ); Mon, 3 Jan 2011 15:44:22 -0500 Received: by ewy23 with SMTP id 23so6093411ewy.11 for ; Mon, 03 Jan 2011 12:44:20 -0800 (PST) Content-Disposition: inline In-Reply-To: <19F8576C6E063C45BE387C64729E739404BD3F2C58@dbde02.ent.ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: "Gupta, Ajay Kumar" Cc: Sergei Shtylyov , Russell King - ARM Linux , "linux-omap@vger.kernel.org" , "davinci-linux-open-source@linux.davincidsp.com" , "linux-arm-kernel@lists.infradead.org" , "Balbi, Felipe" Hi, On Mon, Jan 03, 2011 at 10:45:35PM +0530, Gupta, Ajay Kumar wrote: >> > Moreover, even Felipe also seems to move other musb >> > DMAs (Inventra, CPPI3.0, TUSB) to drivers/dma. >> >> Frankly speaking, I doubt that drivers/dma/ will have place for the >> purely MUSB specific DMA engines such as the named ones (there's no TUSB >> DMA BTW it uses OMAP DMA). >I think we will get more clarity once we start on this activity. I agree, but I personally don't see that many limiting factors. dmaengine is just a generic API for doing DMA transfers. If it's not enough for us currently, we extend it. -- balbi