From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eugeniy Paltsev Subject: [PATCH v3 1/2] DW DMAC: enable memory-to-memory transfers support Date: Fri, 18 Nov 2016 22:12:35 +0300 Message-ID: <1479496356-27834-2-git-send-email-Eugeniy.Paltsev@synopsys.com> References: <1479496356-27834-1-git-send-email-Eugeniy.Paltsev@synopsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1479496356-27834-1-git-send-email-Eugeniy.Paltsev@synopsys.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+gla-linux-snps-arc=m.gmane.org@lists.infradead.org To: devicetree@vger.kernel.org Cc: mark.rutland@arm.com, linux-snps-arc@lists.infradead.org, vinod.koul@intel.com, linux-kernel@vger.kernel.org, robh+dt@kernel.org, dmaengine@vger.kernel.org, andriy.shevchenko@linux.intel.com, Eugeniy Paltsev List-Id: devicetree@vger.kernel.org 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