From patchwork Wed Aug 19 07:16:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 11723115 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4A592618 for ; Wed, 19 Aug 2020 07:16:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3D26F207DA for ; Wed, 19 Aug 2020 07:16:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726778AbgHSHQH (ORCPT ); Wed, 19 Aug 2020 03:16:07 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:26770 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726711AbgHSHQG (ORCPT ); Wed, 19 Aug 2020 03:16:06 -0400 Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 07J7Dafl023237; Wed, 19 Aug 2020 03:15:53 -0400 Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com with ESMTP id 3304kcmfu0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Aug 2020 03:15:53 -0400 Received: from SCSQMBX10.ad.analog.com (scsqmbx10.ad.analog.com [10.77.17.5]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 07J7Fpsf031729 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Wed, 19 Aug 2020 03:15:51 -0400 Received: from SCSQMBX10.ad.analog.com (10.77.17.5) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Wed, 19 Aug 2020 00:15:50 -0700 Received: from zeus.spd.analog.com (10.66.68.11) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server id 15.1.1779.2 via Frontend Transport; Wed, 19 Aug 2020 00:15:49 -0700 Received: from localhost.localdomain ([10.48.65.12]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 07J7Fg8w020449; Wed, 19 Aug 2020 03:15:47 -0400 From: Alexandru Ardelean To: , CC: , , , , Alexandru Ardelean Subject: [PATCH 3/5] dmaengine: axi-dmac: wrap entire dt parse in a function Date: Wed, 19 Aug 2020 10:16:31 +0300 Message-ID: <20200819071633.76494-3-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200819071633.76494-1-alexandru.ardelean@analog.com> References: <20200819071633.76494-1-alexandru.ardelean@analog.com> MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-08-19_04:2020-08-18,2020-08-19 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 adultscore=0 clxscore=1015 suspectscore=8 phishscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 mlxlogscore=999 mlxscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008190060 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org All these attributes will be read from registers in newer core versions, so just wrap the logic into a function. Signed-off-by: Alexandru Ardelean --- drivers/dma/dma-axi-dmac.c | 39 ++++++++++++++++++++++++-------------- 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index 07665c60c21b..473c4a159c89 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -774,6 +774,28 @@ static int axi_dmac_parse_chan_dt(struct device_node *of_chan, return 0; } +static int axi_dmac_parse_dt(struct device *dev, struct axi_dmac *dmac) +{ + struct device_node *of_channels, *of_chan; + int ret; + + of_channels = of_get_child_by_name(dev->of_node, "adi,channels"); + if (of_channels == NULL) + return -ENODEV; + + for_each_child_of_node(of_channels, of_chan) { + ret = axi_dmac_parse_chan_dt(of_chan, &dmac->chan); + if (ret) { + of_node_put(of_chan); + of_node_put(of_channels); + return -EINVAL; + } + } + of_node_put(of_channels); + + return 0; +} + static int axi_dmac_detect_caps(struct axi_dmac *dmac, unsigned int version) { struct axi_dmac_chan *chan = &dmac->chan; @@ -823,7 +845,6 @@ static int axi_dmac_detect_caps(struct axi_dmac *dmac, unsigned int version) static int axi_dmac_probe(struct platform_device *pdev) { - struct device_node *of_channels, *of_chan; struct dma_device *dma_dev; struct axi_dmac *dmac; struct resource *res; @@ -856,19 +877,9 @@ static int axi_dmac_probe(struct platform_device *pdev) INIT_LIST_HEAD(&dmac->chan.active_descs); - of_channels = of_get_child_by_name(pdev->dev.of_node, "adi,channels"); - if (of_channels == NULL) - return -ENODEV; - - for_each_child_of_node(of_channels, of_chan) { - ret = axi_dmac_parse_chan_dt(of_chan, &dmac->chan); - if (ret) { - of_node_put(of_chan); - of_node_put(of_channels); - return -EINVAL; - } - } - of_node_put(of_channels); + ret = axi_dmac_parse_dt(&pdev->dev, dmac); + if (ret < 0) + return ret; pdev->dev.dma_parms = &dmac->dma_parms; dma_set_max_seg_size(&pdev->dev, UINT_MAX);