From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754648AbbIHLYi (ORCPT ); Tue, 8 Sep 2015 07:24:38 -0400 Received: from galahad.ideasonboard.com ([185.26.127.97]:47277 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753950AbbIHLYg (ORCPT ); Tue, 8 Sep 2015 07:24:36 -0400 From: Laurent Pinchart To: Peter Ujfalusi Cc: vinod.koul@intel.com, linux@arm.linux.org.uk, tony@atomide.com, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dan.j.williams@intel.com Subject: Re: [PATCH] dmaengine: omap-dma: Add support for memcpy Date: Tue, 08 Sep 2015 14:24:49 +0300 Message-ID: <3187470.tKXzQaPa1m@avalon> User-Agent: KMail/4.14.8 (Linux/4.0.5-gentoo; KDE/4.14.8; x86_64; ; ) In-Reply-To: <1429688069-31765-1-git-send-email-peter.ujfalusi@ti.com> References: <1429688069-31765-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Peter, Thank you for the patch. While trying to port the omap_vout driver to the DMA engine API I noticed that the driver makes use of double-indexed transfers, which are not supported by the omap-dma driver. I haven't checked in details what would be required, but the interleaved API might be a good candidate for this. Do you have any plan to add support for double-indexed transfers to the omap-dma driver ? On Wednesday 22 April 2015 10:34:29 Peter Ujfalusi wrote: > The sDMA controller is capable of performing memory copy operation. It need > to be configured to software triggered mode and without HW synchronization. > The sDMA can copy data which is aligned to 8, 16 or 32 bits. > > Signed-off-by: Peter Ujfalusi > --- > drivers/dma/omap-dma.c | 51 +++++++++++++++++++++++++++++++++++++++++++++-- > 1 file changed, 49 insertions(+), 2 deletions(-) -- Regards, Laurent Pinchart