From patchwork Mon Nov 3 18:07:40 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 40068 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-la0-f69.google.com (mail-la0-f69.google.com [209.85.215.69]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id 0EB6F20560 for ; Mon, 3 Nov 2014 18:08:26 +0000 (UTC) Received: by mail-la0-f69.google.com with SMTP id q1sf6619085lam.0 for ; Mon, 03 Nov 2014 10:08:25 -0800 (PST) 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=U5vRny2CZEvKpvx9B6IiNOvfjepla8kTo2NQD/v4SzE=; b=fQo7GxnHQpJouMSvSy6dkNkuUJSjaCpdZXsY/vnI+1i3koxI80JPvWXMSGo2fAoN4d gfD8bGMs+lzjN4nF3HsdnfyKOqCiRMIDMmd6EYWKVgJxfx7ybKtQNClrn/coRWJxOx7X SLbOkO+F7ZyvdirrdwXBZswDS+41BmBCV399p25AyDW9uuRpGFSxPnguDgjz5BVH9Fbq WC3sO5p0uwudY2IZAv62b9qOjKJksV3ujR6CWlwSEEjNDi59ux8YCjbPoOy5RvZ4ksF3 c0XZwtRZpdrzleiMBF4JYdDObXxGJ/JXxBYjL5IEIZRODaR+T+PdvNy36B0TTMATX7fg Rajw== X-Gm-Message-State: ALoCoQkUpi6hQX0w/gTwbKDnlcMowvvY+0yp3KdazcindKe9u7wSqQKlhAQuPP6AA2w9mvdjGV9T X-Received: by 10.112.16.35 with SMTP id c3mr746942lbd.13.1415038105939; Mon, 03 Nov 2014 10:08:25 -0800 (PST) MIME-Version: 1.0 X-BeenThere: patchwork-forward@linaro.org Received: by 10.152.197.100 with SMTP id it4ls790016lac.7.gmail; Mon, 03 Nov 2014 10:08:25 -0800 (PST) X-Received: by 10.153.7.107 with SMTP id db11mr53159047lad.35.1415038105798; Mon, 03 Nov 2014 10:08:25 -0800 (PST) Received: from mail-lb0-f182.google.com (mail-lb0-f182.google.com. [209.85.217.182]) by mx.google.com with ESMTPS id l8si33498391lbj.60.2014.11.03.10.08.25 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 03 Nov 2014 10:08:25 -0800 (PST) Received-SPF: pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.182 as permitted sender) client-ip=209.85.217.182; Received: by mail-lb0-f182.google.com with SMTP id f15so10878664lbj.27 for ; Mon, 03 Nov 2014 10:08:25 -0800 (PST) X-Received: by 10.152.29.8 with SMTP id f8mr52876247lah.56.1415038105704; Mon, 03 Nov 2014 10:08:25 -0800 (PST) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patches@linaro.org Received: by 10.112.184.201 with SMTP id ew9csp299lbc; Mon, 3 Nov 2014 10:08:24 -0800 (PST) X-Received: by 10.70.23.163 with SMTP id n3mr45348124pdf.0.1415038096236; Mon, 03 Nov 2014 10:08:16 -0800 (PST) Received: from mail-pd0-f182.google.com (mail-pd0-f182.google.com. [209.85.192.182]) by mx.google.com with ESMTPS id w6si15809286pdp.190.2014.11.03.10.08.15 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 03 Nov 2014 10:08:16 -0800 (PST) Received-SPF: pass (google.com: domain of mathieu.poirier@linaro.org designates 209.85.192.182 as permitted sender) client-ip=209.85.192.182; Received: by mail-pd0-f182.google.com with SMTP id fp1so12005443pdb.27 for ; Mon, 03 Nov 2014 10:08:15 -0800 (PST) X-Received: by 10.70.93.104 with SMTP id ct8mr44707057pdb.72.1415038095411; Mon, 03 Nov 2014 10:08:15 -0800 (PST) Received: from t430.cg.shawcable.net (S0106002369de4dac.cg.shawcable.net. [70.73.24.112]) by mx.google.com with ESMTPSA id ca1sm17825525pdb.13.2014.11.03.10.08.13 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 03 Nov 2014 10:08:14 -0800 (PST) From: mathieu.poirier@linaro.org To: gregkh@linuxfoundation.org Cc: linux@arm.linux.org.uk, 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 v9 06/12] coresight-replicator: add CoreSight Replicator driver Date: Mon, 3 Nov 2014 11:07:40 -0700 Message-Id: <1415038066-22423-7-git-send-email-mathieu.poirier@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1415038066-22423-1-git-send-email-mathieu.poirier@linaro.org> References: <1415038066-22423-1-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 209.85.217.182 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 05b8a1c..574d5fa 100644 --- a/drivers/coresight/Makefile +++ b/drivers/coresight/Makefile @@ -6,4 +6,5 @@ obj-$(CONFIG_OF) += of_coresight.o obj-$(CONFIG_CORESIGHT_LINK_AND_SINK_TMC) += coresight-tmc.o obj-$(CONFIG_CORESIGHT_SINK_TPIU) += coresight-tpiu.o obj-$(CONFIG_CORESIGHT_SINK_ETBV10) += coresight-etb10.o -obj-$(CONFIG_CORESIGHT_LINKS_AND_SINKS) += coresight-funnel.o +obj-$(CONFIG_CORESIGHT_LINKS_AND_SINKS) += 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");