From patchwork Wed Oct 22 15:43:41 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 5134801 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 D637C9F349 for ; Wed, 22 Oct 2014 16:04:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E446720121 for ; Wed, 22 Oct 2014 16:04:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5A139201F5 for ; Wed, 22 Oct 2014 16:04:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752970AbaJVQEF (ORCPT ); Wed, 22 Oct 2014 12:04:05 -0400 Received: from down.free-electrons.com ([37.187.137.238]:54089 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754659AbaJVPph (ORCPT ); Wed, 22 Oct 2014 11:45:37 -0400 Received: by mail.free-electrons.com (Postfix, from userid 106) id 60AEA5010; Wed, 22 Oct 2014 17:45:36 +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 371DA5012; Wed, 22 Oct 2014 17:45:35 +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 27/59] dmaengine: mmp-pdma: Split device_control Date: Wed, 22 Oct 2014 17:43:41 +0200 Message-Id: <1413992653-21963-28-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 Marvell MMP PDMA 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/mmp_pdma.c | 109 +++++++++++++++++++++++++------------------------ 1 file changed, 56 insertions(+), 53 deletions(-) diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index a1a4db5721b8..75787b5009b5 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -683,68 +683,70 @@ fail: return NULL; } -static int mmp_pdma_control(struct dma_chan *dchan, enum dma_ctrl_cmd cmd, - unsigned long arg) +static int mmp_pdma_config(struct dma_chan *dchan, + struct dma_slave_config *cfg) { struct mmp_pdma_chan *chan = to_mmp_pdma_chan(dchan); - struct dma_slave_config *cfg = (void *)arg; - unsigned long flags; u32 maxburst = 0, addr = 0; enum dma_slave_buswidth width = DMA_SLAVE_BUSWIDTH_UNDEFINED; if (!dchan) return -EINVAL; - switch (cmd) { - case DMA_TERMINATE_ALL: - disable_chan(chan->phy); - mmp_pdma_free_phy(chan); - spin_lock_irqsave(&chan->desc_lock, flags); - mmp_pdma_free_desc_list(chan, &chan->chain_pending); - mmp_pdma_free_desc_list(chan, &chan->chain_running); - spin_unlock_irqrestore(&chan->desc_lock, flags); - chan->idle = true; - break; - case DMA_SLAVE_CONFIG: - if (cfg->direction == DMA_DEV_TO_MEM) { - chan->dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC; - maxburst = cfg->src_maxburst; - width = cfg->src_addr_width; - addr = cfg->src_addr; - } else if (cfg->direction == DMA_MEM_TO_DEV) { - chan->dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG; - maxburst = cfg->dst_maxburst; - width = cfg->dst_addr_width; - addr = cfg->dst_addr; - } - - if (width == DMA_SLAVE_BUSWIDTH_1_BYTE) - chan->dcmd |= DCMD_WIDTH1; - else if (width == DMA_SLAVE_BUSWIDTH_2_BYTES) - chan->dcmd |= DCMD_WIDTH2; - else if (width == DMA_SLAVE_BUSWIDTH_4_BYTES) - chan->dcmd |= DCMD_WIDTH4; - - if (maxburst == 8) - chan->dcmd |= DCMD_BURST8; - else if (maxburst == 16) - chan->dcmd |= DCMD_BURST16; - else if (maxburst == 32) - chan->dcmd |= DCMD_BURST32; - - chan->dir = cfg->direction; - chan->dev_addr = addr; - /* FIXME: drivers should be ported over to use the filter - * function. Once that's done, the following two lines can - * be removed. - */ - if (cfg->slave_id) - chan->drcmr = cfg->slave_id; - break; - default: - return -ENOSYS; + if (cfg->direction == DMA_DEV_TO_MEM) { + chan->dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC; + maxburst = cfg->src_maxburst; + width = cfg->src_addr_width; + addr = cfg->src_addr; + } else if (cfg->direction == DMA_MEM_TO_DEV) { + chan->dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG; + maxburst = cfg->dst_maxburst; + width = cfg->dst_addr_width; + addr = cfg->dst_addr; } + if (width == DMA_SLAVE_BUSWIDTH_1_BYTE) + chan->dcmd |= DCMD_WIDTH1; + else if (width == DMA_SLAVE_BUSWIDTH_2_BYTES) + chan->dcmd |= DCMD_WIDTH2; + else if (width == DMA_SLAVE_BUSWIDTH_4_BYTES) + chan->dcmd |= DCMD_WIDTH4; + + if (maxburst == 8) + chan->dcmd |= DCMD_BURST8; + else if (maxburst == 16) + chan->dcmd |= DCMD_BURST16; + else if (maxburst == 32) + chan->dcmd |= DCMD_BURST32; + + chan->dir = cfg->direction; + chan->dev_addr = addr; + /* FIXME: drivers should be ported over to use the filter + * function. Once that's done, the following two lines can + * be removed. + */ + if (cfg->slave_id) + chan->drcmr = cfg->slave_id; + + return 0; +} + +static int mmp_pdma_terminate_all(struct dma_chan *dchan) +{ + struct mmp_pdma_chan *chan = to_mmp_pdma_chan(dchan); + unsigned long flags; + + if (!dchan) + return -EINVAL; + + disable_chan(chan->phy); + mmp_pdma_free_phy(chan); + spin_lock_irqsave(&chan->desc_lock, flags); + mmp_pdma_free_desc_list(chan, &chan->chain_pending); + mmp_pdma_free_desc_list(chan, &chan->chain_running); + spin_unlock_irqrestore(&chan->desc_lock, flags); + chan->idle = true; + return 0; } @@ -1061,7 +1063,8 @@ static int mmp_pdma_probe(struct platform_device *op) pdev->device.device_prep_slave_sg = mmp_pdma_prep_slave_sg; pdev->device.device_prep_dma_cyclic = mmp_pdma_prep_dma_cyclic; pdev->device.device_issue_pending = mmp_pdma_issue_pending; - pdev->device.device_control = mmp_pdma_control; + pdev->device.device_config = mmp_pdma_config; + pdev->device.device_terminate_all = mmp_pdma_terminate_all; pdev->device.copy_align = PDMA_ALIGNMENT; if (pdev->dev->coherent_dma_mask)