From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759611Ab2EKLGE (ORCPT ); Fri, 11 May 2012 07:06:04 -0400 Received: from hqemgate04.nvidia.com ([216.228.121.35]:7275 "EHLO hqemgate04.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759525Ab2EKLFV (ORCPT ); Fri, 11 May 2012 07:05:21 -0400 X-PGP-Universal: processed; by hqnvupgp06.nvidia.com on Fri, 11 May 2012 04:05:13 -0700 From: Laxman Dewangan To: , , , , , , CC: Laxman Dewangan Subject: [PATCH V3 1/2] dma: dmaengine: add slave req id in slave_config Date: Fri, 11 May 2012 16:30:43 +0530 Message-ID: <1336734044-14275-2-git-send-email-ldewangan@nvidia.com> X-Mailer: git-send-email 1.7.1.1 In-Reply-To: <1336734044-14275-1-git-send-email-ldewangan@nvidia.com> References: <1336734044-14275-1-git-send-email-ldewangan@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The DMA controller like Nvidia's Tegra Dma controller supports the different slave requestor id from different slave. This need to be configure in dma controller to handle the request properly. Adding the slave-id in the slave configuration so that information can be passed from client when configuring for slave. Signed-off-by: Laxman Dewangan --- Changes from V2: - Make slave_id as unsigned. include/linux/dmaengine.h | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 1082698..9732396 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -338,6 +338,9 @@ enum dma_slave_buswidth { * @device_fc: Flow Controller Settings. Only valid for slave channels. Fill * with 'true' if peripheral should be flow controller. Direction will be * selected at Runtime. + * @slave_id: Slave requester id. Only valid for slave channels. The dma + * slave peripheral will have unique id as dma requester which need to be + * pass as slave config. * * This struct is passed in as configuration data to a DMA engine * in order to set up a certain channel for DMA transport at runtime. @@ -365,6 +368,7 @@ struct dma_slave_config { u32 src_maxburst; u32 dst_maxburst; bool device_fc; + unsigned int slave_id; }; static inline const char *dma_chan_name(struct dma_chan *chan) -- 1.7.1.1