Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754688Ab3CFTzl (ORCPT ); Wed, 6 Mar 2013 14:55:41 -0500 Received: from mail-ia0-f175.google.com ([209.85.210.175]:42800 "EHLO mail-ia0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754551Ab3CFTzj (ORCPT ); Wed, 6 Mar 2013 14:55:39 -0500 From: Matt Porter To: Vinod Koul , Chris Ball Cc: Dan Williams , Sekhar Nori , Grant Likely , Linux DaVinci Kernel List , Linux Kernel Mailing List , Linux MMC List Subject: [PATCH v4 0/3] dmaengine: add slave sg transfer limits api Date: Wed, 6 Mar 2013 14:56:04 -0500 Message-Id: <1362599767-11292-1-git-send-email-mporter@ti.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1699 Lines: 44 Changes since v3: - Change api name to dma_get_slave_sg_limits() to avoid confusion with h/w caps which are static. Changes since v2: - Change to a separate slave sg specific api. Drop the generic per-channel capabilities api that is not used. Changes since v1: - Use the existing dma_transaction_type enums instead of adding the mostly duplicated dmaengine_apis enums This series adds a new dmaengine api, dma_get_slave_sg_limits(), which may be used by a client driver to get slave SG transfer limits for a particular channel. At this time, these include the max number of segments and max length of a segment that a channel can handle for a SG transfer. Along with the API implementation, this series implements the backend device_slave_sg_limits() in the EDMA DMA Engine driver and converts the davinci_mmc driver to use dma_get_slave_sg_limits() to replace hardcoded limits. This is tested on the AM1808-EVM. Matt Porter (3): dmaengine: add dma_get_slave_sg_limits() dma: edma: add device_slave_sg_limits() support mmc: davinci: get SG segment limits with dma_get_slave_sg_limits() drivers/dma/edma.c | 17 +++++++++++++ drivers/mmc/host/davinci_mmc.c | 37 ++++++++------------------- include/linux/dmaengine.h | 39 +++++++++++++++++++++++++++++ include/linux/platform_data/mmc-davinci.h | 3 --- 4 files changed, 66 insertions(+), 30 deletions(-) -- 1.7.9.5 -- 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/