Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754224AbcKRQxb (ORCPT ); Fri, 18 Nov 2016 11:53:31 -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 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: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 883 Lines: 28 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 --- 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; -- 2.5.5