From patchwork Tue Sep 30 16:58:50 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 38171 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-lb0-f197.google.com (mail-lb0-f197.google.com [209.85.217.197]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id 5DCAB2032C for ; Tue, 30 Sep 2014 16:59:19 +0000 (UTC) Received: by mail-lb0-f197.google.com with SMTP id p9sf1284190lbv.0 for ; Tue, 30 Sep 2014 09:59:17 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:delivered-to:from:to:cc:subject :date:message-id:in-reply-to:references:x-original-sender :x-original-authentication-results:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-unsubscribe; bh=RqJn4L9v57BPeeCvXTKdeYLGF1TyX+RyxUR/itS28dk=; b=WTdNQnOoLyLMfOuWbTPx9/8RKTW70R2QW5SBCJjQ0FwUwZG5ek6btyZbfc5FF2Sjb+ RJUG+SsbhDpH23i038K3YcOBjJdc9KmjxttNhvLlIrI+44hl6sUR56IHfylTV5sIYAXe QhrRoYUZO6G1hXfE0Z7BLeZQf7NVZE3BoV86F9eaHLalnxwsVyxGir3gCtvVIdi03kCz Y1zFhTj013VPF4Vxw93RXnh26neQ6QcTzA4CUB8YzVBrNH37UGf2yWOQGCAydKYYikX9 8bS9Sfbpz/h2O8p283DOcY8Q/s3Rk+CVernKISq1EtWYGcyviKd4NkijOT4EDEB/PaQM yTRA== X-Gm-Message-State: ALoCoQn0KWBVCuVC57dpsNGcwFtscZHYKUOuHsMCswORsynBd9AFJ3RcB/0Az5OKFGcYqIbXVPpY X-Received: by 10.180.160.169 with SMTP id xl9mr1088530wib.7.1412096357884; Tue, 30 Sep 2014 09:59:17 -0700 (PDT) MIME-Version: 1.0 X-BeenThere: patchwork-forward@linaro.org Received: by 10.152.7.169 with SMTP id k9ls69424laa.91.gmail; Tue, 30 Sep 2014 09:59:17 -0700 (PDT) X-Received: by 10.112.54.130 with SMTP id j2mr16113223lbp.41.1412096357720; Tue, 30 Sep 2014 09:59:17 -0700 (PDT) Received: from mail-la0-f45.google.com (mail-la0-f45.google.com [209.85.215.45]) by mx.google.com with ESMTPS id q5si23612504laq.60.2014.09.30.09.59.17 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 30 Sep 2014 09:59:17 -0700 (PDT) Received-SPF: pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.215.45 as permitted sender) client-ip=209.85.215.45; Received: by mail-la0-f45.google.com with SMTP id q1so9040534lam.18 for ; Tue, 30 Sep 2014 09:59:17 -0700 (PDT) X-Received: by 10.112.163.103 with SMTP id yh7mr46026318lbb.73.1412096357639; Tue, 30 Sep 2014 09:59:17 -0700 (PDT) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patches@linaro.org Received: by 10.112.130.169 with SMTP id of9csp384947lbb; Tue, 30 Sep 2014 09:59:16 -0700 (PDT) X-Received: by 10.68.221.166 with SMTP id qf6mr72356682pbc.12.1412096356080; Tue, 30 Sep 2014 09:59:16 -0700 (PDT) Received: from mail-pd0-f175.google.com (mail-pd0-f175.google.com [209.85.192.175]) by mx.google.com with ESMTPS id d2si27669871pdi.18.2014.09.30.09.59.15 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 30 Sep 2014 09:59:16 -0700 (PDT) Received-SPF: pass (google.com: domain of mathieu.poirier@linaro.org designates 209.85.192.175 as permitted sender) client-ip=209.85.192.175; Received: by mail-pd0-f175.google.com with SMTP id v10so1110130pde.20 for ; Tue, 30 Sep 2014 09:59:15 -0700 (PDT) X-Received: by 10.68.114.129 with SMTP id jg1mr8267720pbb.38.1412096355358; Tue, 30 Sep 2014 09:59:15 -0700 (PDT) Received: from t430.cg.shawcable.net (S0106002369de4dac.cg.shawcable.net. [70.73.24.112]) by mx.google.com with ESMTPSA id fo4sm15649083pbb.12.2014.09.30.09.59.13 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 30 Sep 2014 09:59:14 -0700 (PDT) From: mathieu.poirier@linaro.org To: linux@arm.linux.org.uk, gregkh@linuxfoundation.org Cc: pratikp@codeaurora.org, varshney@ti.com, Al.Grant@arm.com, jonas.svennebring@avagotech.com, james.king@linaro.org, kaixu.xia@linaro.org, marcin.jabrzyk@gmail.com, r.sengupta@samsung.com, robbelibobban@gmail.com, patches@linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mathieu.poirier@linaro.org Subject: [PATCH v7 06/11] coresight-replicator: add CoreSight Replicator driver Date: Tue, 30 Sep 2014 10:58:50 -0600 Message-Id: <1412096335-18672-7-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1412096335-18672-1-git-send-email-mathieu.poirier@linaro.org> References: <1412096335-18672-1-git-send-email-mathieu.poirier@linaro.org> X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: mathieu.poirier@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.215.45 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Precedence: list Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org List-ID: X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , From: Pratik Patel This driver manages non-configurable CoreSight Replicator that takes a single input trace data stream and replicates it to produce two identical trace data output streams. Replicators are typically used to route single interleaved trace data stream to two or more sinks. Signed-off-by: Pratik Patel Signed-off-by: Mathieu Poirier --- drivers/coresight/Makefile | 3 +- drivers/coresight/coresight-replicator.c | 138 +++++++++++++++++++++++++++++++ 2 files changed, 140 insertions(+), 1 deletion(-) create mode 100644 drivers/coresight/coresight-replicator.c diff --git a/drivers/coresight/Makefile b/drivers/coresight/Makefile index 26a07e1..3a32c06 100644 --- a/drivers/coresight/Makefile +++ b/drivers/coresight/Makefile @@ -4,4 +4,5 @@ obj-$(CONFIG_CORESIGHT) += coresight.o obj-$(CONFIG_OF) += of_coresight.o obj-$(CONFIG_CORESIGHT_LINKS_AND_SINKS) += coresight-tmc.o coresight-tpiu.o \ - coresight-etb10.o coresight-funnel.o + coresight-etb10.o coresight-funnel.o \ + coresight-replicator.o diff --git a/drivers/coresight/coresight-replicator.c b/drivers/coresight/coresight-replicator.c new file mode 100644 index 0000000..c879039 --- /dev/null +++ b/drivers/coresight/coresight-replicator.c @@ -0,0 +1,138 @@ +/* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "coresight-priv.h" + +/** + * struct replicator_drvdata - specifics associated to a replicator component + * @dev: the device entity associated with this component + * @csdev: component vitals needed by the framework + */ +struct replicator_drvdata { + struct device *dev; + struct coresight_device *csdev; +}; + +static int replicator_enable(struct coresight_device *csdev, int inport, + int outport) +{ + struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + + dev_info(drvdata->dev, "REPLICATOR enabled\n"); + return 0; +} + +static void replicator_disable(struct coresight_device *csdev, int inport, + int outport) +{ + struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + + dev_info(drvdata->dev, "REPLICATOR disabled\n"); +} + +static const struct coresight_ops_link replicator_link_ops = { + .enable = replicator_enable, + .disable = replicator_disable, +}; + +static const struct coresight_ops replicator_cs_ops = { + .link_ops = &replicator_link_ops, +}; + +static int replicator_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct coresight_platform_data *pdata = NULL; + struct replicator_drvdata *drvdata; + struct coresight_desc *desc; + struct device_node *np = pdev->dev.of_node; + + if (np) { + pdata = of_get_coresight_platform_data(dev, np); + if (IS_ERR(pdata)) + return PTR_ERR(pdata); + pdev->dev.platform_data = pdata; + } + + drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + drvdata->dev = &pdev->dev; + platform_set_drvdata(pdev, drvdata); + + desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); + if (!desc) + return -ENOMEM; + + desc->type = CORESIGHT_DEV_TYPE_LINK; + desc->subtype.sink_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT; + desc->ops = &replicator_cs_ops; + desc->pdata = pdev->dev.platform_data; + desc->dev = &pdev->dev; + drvdata->csdev = coresight_register(desc); + if (IS_ERR(drvdata->csdev)) + return PTR_ERR(drvdata->csdev); + + dev_info(dev, "REPLICATOR initialized\n"); + return 0; +} + +static int replicator_remove(struct platform_device *pdev) +{ + struct replicator_drvdata *drvdata = platform_get_drvdata(pdev); + + coresight_unregister(drvdata->csdev); + return 0; +} + +static struct of_device_id replicator_match[] = { + {.compatible = "arm,coresight-replicator"}, + {} +}; + +static struct platform_driver replicator_driver = { + .probe = replicator_probe, + .remove = replicator_remove, + .driver = { + .name = "coresight-replicator", + .owner = THIS_MODULE, + .of_match_table = replicator_match, + }, +}; + +static int __init replicator_init(void) +{ + return platform_driver_register(&replicator_driver); +} +module_init(replicator_init); + +static void __exit replicator_exit(void) +{ + platform_driver_unregister(&replicator_driver); +} +module_exit(replicator_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("CoreSight Replicator driver");