From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754855AbbHXOWY (ORCPT ); Mon, 24 Aug 2015 10:22:24 -0400 Received: from mga11.intel.com ([192.55.52.93]:2754 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754831AbbHXOWQ (ORCPT ); Mon, 24 Aug 2015 10:22:16 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,738,1432623600"; d="scan'208";a="789902672" Date: Mon, 24 Aug 2015 19:54:25 +0530 From: Vinod Koul To: Maxime Ripard Cc: Nicolas Ferre , Alexandre Belloni , Ludovic Desroches , Thomas Petazzoni , Boris Brezillon , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v3] dmaengine: hdmac: Add memset capabilities Message-ID: <20150824142425.GL13546@localhost> References: <1440408075-26438-1-git-send-email-maxime.ripard@free-electrons.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1440408075-26438-1-git-send-email-maxime.ripard@free-electrons.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 24, 2015 at 11:21:15AM +0200, Maxime Ripard wrote: > Just like for the XDMAC, the SoCs that embed the HDMAC don't have any kind > of GPU, and need to accelerate a few framebuffer-related operations through > their DMA controller. > > However, unlike the XDMAC, the HDMAC doesn't have the memset capability > built-in. That can be easily emulated though, by doing a transfer with a > fixed address on the variable that holds the value we want to set. Applied, thanks -- ~Vinod