Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755878Ab3JGP1J (ORCPT ); Mon, 7 Oct 2013 11:27:09 -0400 Received: from mga02.intel.com ([134.134.136.20]:6061 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753704Ab3JGP1G (ORCPT ); Mon, 7 Oct 2013 11:27:06 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.90,1050,1371106800"; d="scan'208";a="415224211" Date: Mon, 7 Oct 2013 20:03:51 +0530 From: Vinod Koul To: Heiko =?iso-8859-1?Q?St=FCbner?= Cc: kgene.kim@samsung.com, Dan Williams , linus.walleij@linaro.org, Tomasz Figa , Sylwester Nawrocki , linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org Subject: Re: [PATCH v5 2/4] dmaengine: add driver for Samsung s3c24xx SoCs Message-ID: <20131007143351.GK2954@intel.com> References: <201309182118.28391.heiko@sntech.de> <201309182119.54560.heiko@sntech.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <201309182119.54560.heiko@sntech.de> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1365 Lines: 30 On Wed, Sep 18, 2013 at 09:19:54PM +0200, Heiko St?bner wrote: > This adds a new driver to support the s3c24xx dma using the dmaengine > and makes the old one in mach-s3c24xx obsolete in the long run. > > Conceptually the s3c24xx-dma feels like a distant relative of the pl08x > with numerous virtual channels being mapped to a lot less physical ones. > The driver therefore borrows a lot from the amba-pl08x driver in this > regard. Functionality-wise the driver gains a memcpy ability in addition > to the slave_sg one. > > The driver supports both the method for requesting the peripheral used > by SoCs before the S3C2443 and the different method for S3C2443 and later. > > On earlier SoCs the hardware channels usable for specific peripherals is > constrainted while on later SoCs all channels can be used for any peripheral. > > Tested on a s3c2416-based board, memcpy using the dmatest module and > slave_sg partially using the spi-s3c64xx driver. > > Signed-off-by: Heiko Stuebner > Acked-by: Linus Walleij Acked-by: Vinod Koul -- ~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/