Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751874Ab1C2E7q (ORCPT ); Tue, 29 Mar 2011 00:59:46 -0400 Received: from mga14.intel.com ([143.182.124.37]:56562 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750775Ab1C2E7o (ORCPT ); Tue, 29 Mar 2011 00:59:44 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.63,259,1299484800"; d="scan'208";a="410152971" Subject: Re: [RFC] mmc: msm_sdcc: Use SPS BAM as DMA engine From: "Koul, Vinod" To: David Brown Cc: Subhash Jadavani , "'Daniel Walker'" , cjb@laptop.org, linux-mmc@vger.kernel.org, linux-arm-msm@vger.kernel.org, bryanh@codeaurora.org, linux-kernel@vger.kernel.org In-Reply-To: <8yak4fo16jp.fsf@huya.qualcomm.com> References: <1300454644-11361-1-git-send-email-subhashj@codeaurora.org> <1300454644-11361-2-git-send-email-subhashj@codeaurora.org> <1300885535.6117.15.camel@m0nster> <005601cbe9f5$a5088750$ef1995f0$@org> <8yak4fo16jp.fsf@huya.qualcomm.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 29 Mar 2011 10:00:05 +0530 Message-ID: <1301373005.1695.25.camel@vkoul-udesk3> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 767 Lines: 19 On Thu, 2011-03-24 at 15:45 -0700, David Brown wrote: > > Currently none of the MSM DMA hardware uses the DMA engine API, and I > think we need to figure out if we want to move to that at some point. I > realize that the hardware (especially SPS BAM) does a lot more than > regular DMA, this may involve extending DMA engine, which may or may not > be appropriate. If its looks sane extension, I am okay with it :) Can you point out _exactly_ why the MSM DMA H/W can't use DMA engine at this point of time? -- ~Vinod -- 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/