From patchwork Sat Oct 11 15:46:44 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Koul X-Patchwork-Id: 5069611 Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 43B1CC11AC for ; Sat, 11 Oct 2014 16:22:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 898A620179 for ; Sat, 11 Oct 2014 16:22:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A9D962018E for ; Sat, 11 Oct 2014 16:22:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752584AbaJKQW0 (ORCPT ); Sat, 11 Oct 2014 12:22:26 -0400 Received: from mga11.intel.com ([192.55.52.93]:29315 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751009AbaJKQUw (ORCPT ); Sat, 11 Oct 2014 12:20:52 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 11 Oct 2014 09:20:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,699,1406617200"; d="scan'208";a="603887835" Received: from vkoul-udesk3.iind.intel.com (HELO localhost.localdomain) ([10.223.96.11]) by fmsmga001.fm.intel.com with ESMTP; 11 Oct 2014 09:20:49 -0700 From: Vinod Koul To: dmaengine@vger.kernel.org Cc: Li Yang , Zhang Wei , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Vinod Koul Subject: [PATCH 2/6] dmaengine: freescale: add and export fsl_dma_external_start() Date: Sat, 11 Oct 2014 21:16:44 +0530 Message-Id: <1413042408-28491-3-git-send-email-vinod.koul@intel.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1413042408-28491-1-git-send-email-vinod.koul@intel.com> References: <1413042408-28491-1-git-send-email-vinod.koul@intel.com> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The freescale driver uses custom device control FSLDMA_EXTERNAL_START to put the controller in external start mode. Since we are planning to deprecate the device control, move this to exported API. Subsequent patches will remove the FSLDMA_EXTERNAL_START Signed-off-by: Vinod Koul --- drivers/dma/fsldma.c | 16 +++++++++++++++- include/linux/fsldma.h | 13 +++++++++++++ 2 files changed, 28 insertions(+), 1 deletions(-) create mode 100644 include/linux/fsldma.h diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index d5d6885..0cded86 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -36,7 +36,7 @@ #include #include #include - +#include #include "dmaengine.h" #include "fsldma.h" @@ -367,6 +367,20 @@ static void fsl_chan_toggle_ext_start(struct fsldma_chan *chan, int enable) chan->feature &= ~FSL_DMA_CHAN_START_EXT; } +int fsl_dma_external_start(struct dma_chan *dchan, int enable) +{ + struct fsldma_chan *chan; + + if (!dchan) + return -EINVAL; + + chan = to_fsl_chan(dchan); + + fsl_chan_toggle_ext_start(chan, enable); + return 0; +} +EXPORT_SYMBOL_GPL(fsl_dma_external_start); + static void append_ld_queue(struct fsldma_chan *chan, struct fsl_desc_sw *desc) { struct fsl_desc_sw *tail = to_fsl_desc(chan->ld_pending.prev); diff --git a/include/linux/fsldma.h b/include/linux/fsldma.h new file mode 100644 index 0000000..b213c02 --- /dev/null +++ b/include/linux/fsldma.h @@ -0,0 +1,13 @@ +/* + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef FSL_DMA_H +#define FSL_DMA_H +/* fsl dma API for enxternal start */ +int fsl_dma_external_start(struct dma_chan *dchan, int enable); + +#endif