From patchwork Fri Nov 18 16:53:08 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugeniy Paltsev X-Patchwork-Id: 9437085 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AF4AC60755 for ; Fri, 18 Nov 2016 16:53:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A20ED298AC for ; Fri, 18 Nov 2016 16:53:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 94BF82940F; Fri, 18 Nov 2016 16:53:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EB296284E6 for ; Fri, 18 Nov 2016 16:53:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754159AbcKRQx2 (ORCPT ); Fri, 18 Nov 2016 11:53:28 -0500 Received: from smtprelay.synopsys.com ([198.182.47.9]:43600 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754050AbcKRQxY (ORCPT ); Fri, 18 Nov 2016 11:53:24 -0500 Received: from mailhost.synopsys.com (mailhost2.synopsys.com [10.13.184.66]) by smtprelay.synopsys.com (Postfix) with ESMTP id 1372424E1EC6; Fri, 18 Nov 2016 08:53:23 -0800 (PST) Received: from mailhost.synopsys.com (localhost [127.0.0.1]) by mailhost.synopsys.com (Postfix) with ESMTP id F08EF2B6; Fri, 18 Nov 2016 08:53:22 -0800 (PST) Received: from paltsev-8460-lab.internal.synopsys.com (paltsev-8460-lab.internal.synopsys.com [10.121.14.113]) by mailhost.synopsys.com (Postfix) with ESMTP id CE91C2A9; Fri, 18 Nov 2016 08:53:20 -0800 (PST) From: Eugeniy Paltsev To: devicetree@vger.kernel.org Cc: robh+dt@kernel.org, mark.rutland@arm.com, linux-kernel@vger.kernel.org, andriy.shevchenko@linux.intel.com, vinod.koul@intel.com, dmaengine@vger.kernel.org, linux-snps-arc@lists.infradead.org, Eugeniy Paltsev Subject: [PATCH v2 1/2] DW DMAC: enable memory-to-memory transfers support Date: Fri, 18 Nov 2016 19:53:08 +0300 Message-Id: <1479487989-24543-2-git-send-email-Eugeniy.Paltsev@synopsys.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1479487989-24543-1-git-send-email-Eugeniy.Paltsev@synopsys.com> References: <1479487989-24543-1-git-send-email-Eugeniy.Paltsev@synopsys.com> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP All known devices, which use DT for configuration, support memory-to-memory transfers. So enable it by default, if we read configuration from DT. Signed-off-by: Eugeniy Paltsev Acked-by: Andy Shevchenko --- drivers/dma/dw/platform.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c index 5bda0eb..aa7a5c1 100644 --- a/drivers/dma/dw/platform.c +++ b/drivers/dma/dw/platform.c @@ -129,6 +129,12 @@ dw_dma_parse_dt(struct platform_device *pdev) if (of_property_read_bool(np, "is_private")) pdata->is_private = true; + /* + * All known devices, which use DT for configuration, support + * memory-to-memory transfers. So enable it by default. + */ + pdata->is_memcpy = true; + if (!of_property_read_u32(np, "chan_allocation_order", &tmp)) pdata->chan_allocation_order = (unsigned char)tmp;