Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754346Ab2FFFdS (ORCPT ); Wed, 6 Jun 2012 01:33:18 -0400 Received: from hqemgate03.nvidia.com ([216.228.121.140]:8811 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750832Ab2FFFdR (ORCPT ); Wed, 6 Jun 2012 01:33:17 -0400 X-PGP-Universal: processed; by hqnvupgp06.nvidia.com on Tue, 05 Jun 2012 22:33:15 -0700 From: Laxman Dewangan To: , , , , , CC: , Laxman Dewangan Subject: [PATCH V5 1/2] dma: dmaengine: add slave req id in slave_config Date: Wed, 6 Jun 2012 10:55:26 +0530 Message-ID: <1338960327-31453-1-git-send-email-ldewangan@nvidia.com> X-Mailer: git-send-email 1.7.1.1 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 Content-Length: 1701 Lines: 48 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. No Changes from V3 and V4. 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 56377df..ccec62f 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/