From patchwork Wed Oct 22 15:43:47 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 5134601 Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id F38E49F349 for ; Wed, 22 Oct 2014 16:01:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 11AEB20158 for ; Wed, 22 Oct 2014 16:01:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0514720121 for ; Wed, 22 Oct 2014 16:01:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752988AbaJVQBp (ORCPT ); Wed, 22 Oct 2014 12:01:45 -0400 Received: from down.free-electrons.com ([37.187.137.238]:54095 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754750AbaJVPpo (ORCPT ); Wed, 22 Oct 2014 11:45:44 -0400 Received: by mail.free-electrons.com (Postfix, from userid 106) id 3C7635016; Wed, 22 Oct 2014 17:45:43 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost (col31-4-88-188-83-94.fbx.proxad.net [88.188.83.94]) by mail.free-electrons.com (Postfix) with ESMTPSA id 9FCA2500A; Wed, 22 Oct 2014 17:45:42 +0200 (CEST) From: Maxime Ripard To: dmaengine@vger.kernel.org, Vinod Koul Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Laurent Pinchart , =?UTF-8?q?Antoine=20T=C3=A9nart?= , lars@metafoo.de, Russell King , Maxime Ripard , Dan Williams Subject: [PATCH v3 33/59] dmaengine: nbpfaxi: Split device_control Date: Wed, 22 Oct 2014 17:43:47 +0200 Message-Id: <1413992653-21963-34-git-send-email-maxime.ripard@free-electrons.com> X-Mailer: git-send-email 2.1.1 In-Reply-To: <1413992653-21963-1-git-send-email-maxime.ripard@free-electrons.com> References: <1413992653-21963-1-git-send-email-maxime.ripard@free-electrons.com> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Split the device_control callback of the NBPF AXI DMA driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard --- drivers/dma/nbpfaxi.c | 93 +++++++++++++++++++++++++-------------------------- 1 file changed, 46 insertions(+), 47 deletions(-) diff --git a/drivers/dma/nbpfaxi.c b/drivers/dma/nbpfaxi.c index b4a61ccbb443..a07698fc798f 100644 --- a/drivers/dma/nbpfaxi.c +++ b/drivers/dma/nbpfaxi.c @@ -565,13 +565,6 @@ static void nbpf_configure(struct nbpf_device *nbpf) nbpf_write(nbpf, NBPF_CTRL, NBPF_CTRL_LVINT); } -static void nbpf_pause(struct nbpf_channel *chan) -{ - nbpf_chan_write(chan, NBPF_CHAN_CTRL, NBPF_CHAN_CTRL_SETSUS); - /* See comment in nbpf_prep_one() */ - nbpf_chan_write(chan, NBPF_CHAN_CTRL, NBPF_CHAN_CTRL_CLREN); -} - /* Generic part */ /* DMA ENGINE functions */ @@ -837,54 +830,58 @@ static void nbpf_chan_idle(struct nbpf_channel *chan) } } -static int nbpf_control(struct dma_chan *dchan, enum dma_ctrl_cmd cmd, - unsigned long arg) +static int nbpf_pause(struct dma_chan *dchan) { struct nbpf_channel *chan = nbpf_to_chan(dchan); - struct dma_slave_config *config; - dev_dbg(dchan->device->dev, "Entry %s(%d)\n", __func__, cmd); + dev_dbg(dchan->device->dev, "Entry %s\n", __func__); - switch (cmd) { - case DMA_TERMINATE_ALL: - dev_dbg(dchan->device->dev, "Terminating\n"); - nbpf_chan_halt(chan); - nbpf_chan_idle(chan); - break; + chan->paused = true; + nbpf_chan_write(chan, NBPF_CHAN_CTRL, NBPF_CHAN_CTRL_SETSUS); + /* See comment in nbpf_prep_one() */ + nbpf_chan_write(chan, NBPF_CHAN_CTRL, NBPF_CHAN_CTRL_CLREN); - case DMA_SLAVE_CONFIG: - if (!arg) - return -EINVAL; - config = (struct dma_slave_config *)arg; + return 0; +} - /* - * We could check config->slave_id to match chan->terminal here, - * but with DT they would be coming from the same source, so - * such a check would be superflous - */ +static int nbpf_terminate_all(struct dma_chan *dchan) +{ + struct nbpf_channel *chan = nbpf_to_chan(dchan); - chan->slave_dst_addr = config->dst_addr; - chan->slave_dst_width = nbpf_xfer_size(chan->nbpf, - config->dst_addr_width, 1); - chan->slave_dst_burst = nbpf_xfer_size(chan->nbpf, - config->dst_addr_width, - config->dst_maxburst); - chan->slave_src_addr = config->src_addr; - chan->slave_src_width = nbpf_xfer_size(chan->nbpf, - config->src_addr_width, 1); - chan->slave_src_burst = nbpf_xfer_size(chan->nbpf, - config->src_addr_width, - config->src_maxburst); - break; + dev_dbg(dchan->device->dev, "Entry %s\n", __func__); + dev_dbg(dchan->device->dev, "Terminating\n"); - case DMA_PAUSE: - chan->paused = true; - nbpf_pause(chan); - break; + nbpf_chan_halt(chan); + nbpf_chan_idle(chan); - default: - return -ENXIO; - } + return 0; +} + +static int nbpf_config(struct dma_chan *dchan, + struct dma_slave_config *config) +{ + struct nbpf_channel *chan = nbpf_to_chan(dchan); + + dev_dbg(dchan->device->dev, "Entry %s\n", __func__); + + /* + * We could check config->slave_id to match chan->terminal here, + * but with DT they would be coming from the same source, so + * such a check would be superflous + */ + + chan->slave_dst_addr = config->dst_addr; + chan->slave_dst_width = nbpf_xfer_size(chan->nbpf, + config->dst_addr_width, 1); + chan->slave_dst_burst = nbpf_xfer_size(chan->nbpf, + config->dst_addr_width, + config->dst_maxburst); + chan->slave_src_addr = config->src_addr; + chan->slave_src_width = nbpf_xfer_size(chan->nbpf, + config->src_addr_width, 1); + chan->slave_src_burst = nbpf_xfer_size(chan->nbpf, + config->src_addr_width, + config->src_maxburst); return 0; } @@ -1426,7 +1423,9 @@ static int nbpf_probe(struct platform_device *pdev) /* Compulsory for DMA_SLAVE fields */ dma_dev->device_prep_slave_sg = nbpf_prep_slave_sg; - dma_dev->device_control = nbpf_control; + dma_dev->device_config = nbpf_config; + dma_dev->device_pause = nbpf_pause; + dma_dev->device_terminate_all = nbpf_terminate_all; platform_set_drvdata(pdev, nbpf);