From patchwork Thu Oct 16 10:17:37 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 5090101 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 17CD9C11AC for ; Thu, 16 Oct 2014 10:22:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2DF3520166 for ; Thu, 16 Oct 2014 10:22:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3CA14200FF for ; Thu, 16 Oct 2014 10:22:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752618AbaJPKUX (ORCPT ); Thu, 16 Oct 2014 06:20:23 -0400 Received: from top.free-electrons.com ([176.31.233.9]:37383 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752583AbaJPKUU (ORCPT ); Thu, 16 Oct 2014 06:20:20 -0400 Received: by mail.free-electrons.com (Postfix, from userid 106) id 694142F29; Thu, 16 Oct 2014 12:20:16 +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=-6.1 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_WEB, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost (unknown [62.156.150.204]) by mail.free-electrons.com (Postfix) with ESMTPSA id AAFA83351; Thu, 16 Oct 2014 12:18:34 +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 , Linus Walleij , Dan Williams Subject: [PATCH v2 38/53] dmaengine: d40: Split device_control Date: Thu, 16 Oct 2014 12:17:37 +0200 Message-Id: <1413454672-27400-39-git-send-email-maxime.ripard@free-electrons.com> X-Mailer: git-send-email 2.1.1 In-Reply-To: <1413454672-27400-1-git-send-email-maxime.ripard@free-electrons.com> References: <1413454672-27400-1-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 ST-Ericsson DMA 40 driver to make use of the newly introduced callbacks, that will eventually be used to retrieve slave capabilities. Signed-off-by: Maxime Ripard Acked-by: Linus Walleij --- drivers/dma/ste_dma40.c | 60 +++++++++++++++++++++++-------------------------- 1 file changed, 28 insertions(+), 32 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 5fe59335e247..b781c988b592 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1429,11 +1429,17 @@ static bool d40_tx_is_linked(struct d40_chan *d40c) return is_link; } -static int d40_pause(struct d40_chan *d40c) +static int d40_pause(struct dma_chan *chan) { + struct d40_chan *d40c = container_of(chan, struct d40_chan, chan); int res = 0; unsigned long flags; + if (d40c->phy_chan == NULL) { + chan_err(d40c, "Channel is not allocated!\n"); + return -EINVAL; + } + if (!d40c->busy) return 0; @@ -1448,11 +1454,17 @@ static int d40_pause(struct d40_chan *d40c) return res; } -static int d40_resume(struct d40_chan *d40c) +static int d40_resume(struct dma_chan *chan) { + struct d40_chan *d40c = container_of(chan, struct d40_chan, chan); int res = 0; unsigned long flags; + if (d40c->phy_chan == NULL) { + chan_err(d40c, "Channel is not allocated!\n"); + return -EINVAL; + } + if (!d40c->busy) return 0; @@ -2610,6 +2622,11 @@ static void d40_terminate_all(struct dma_chan *chan) struct d40_chan *d40c = container_of(chan, struct d40_chan, chan); int ret; + if (d40c->phy_chan == NULL) { + chan_err(d40c, "Channel is not allocated!\n"); + return -EINVAL; + } + spin_lock_irqsave(&d40c->lock, flags); pm_runtime_get_sync(d40c->base->dev); @@ -2673,6 +2690,11 @@ static int d40_set_runtime_config(struct dma_chan *chan, u32 src_maxburst, dst_maxburst; int ret; + if (d40c->phy_chan == NULL) { + chan_err(d40c, "Channel is not allocated!\n"); + return -EINVAL; + } + src_addr_width = config->src_addr_width; src_maxburst = config->src_maxburst; dst_addr_width = config->dst_addr_width; @@ -2781,35 +2803,6 @@ static int d40_set_runtime_config(struct dma_chan *chan, return 0; } -static int d40_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, - unsigned long arg) -{ - struct d40_chan *d40c = container_of(chan, struct d40_chan, chan); - - if (d40c->phy_chan == NULL) { - chan_err(d40c, "Channel is not allocated!\n"); - return -EINVAL; - } - - switch (cmd) { - case DMA_TERMINATE_ALL: - d40_terminate_all(chan); - return 0; - case DMA_PAUSE: - return d40_pause(d40c); - case DMA_RESUME: - return d40_resume(d40c); - case DMA_SLAVE_CONFIG: - return d40_set_runtime_config(chan, - (struct dma_slave_config *) arg); - default: - break; - } - - /* Other commands are unimplemented */ - return -ENXIO; -} - /* Initialization functions */ static void __init d40_chan_init(struct d40_base *base, struct dma_device *dma, @@ -2870,7 +2863,10 @@ static void d40_ops_init(struct d40_base *base, struct dma_device *dev) dev->device_free_chan_resources = d40_free_chan_resources; dev->device_issue_pending = d40_issue_pending; dev->device_tx_status = d40_tx_status; - dev->device_control = d40_control; + dev->device_config = d40_set_runtime_config; + dev->device_pause = d40_pause; + dev->device_resume = d40_resume; + dev->device_terminate_all = d40_terminate_all; dev->dev = base->dev; }