From patchwork Thu Dec 28 09:33:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mao Jinlong X-Patchwork-Id: 759126 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C2AD363B6; Thu, 28 Dec 2023 09:34:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="eENMT9lE" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BS9XYdX005402; Thu, 28 Dec 2023 09:33:34 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding:content-type; s=qcppdkim1; bh=3V3kSOA OwccGH7vwGx91DHobrSy3nxlzWo29d0Rsq1w=; b=eENMT9lET+jKLILcfCbrDZu KjAQHhKWuy+KTuGsDuIcUScMPfv6DE4vtabpGEJtF7qCgWsh6RJLRy/snkBhOHYY ANgYwTHOrabuV+LEcsqG/mPPzROLrZmXjLwso0V9iED7+FdbqfIQ+Kk1q5IT3k5U iErHUtT7MpSVZqVTfQQDTBKLEfBBHQONtQtiDdsvuowQ/3LkM36hnHi4S9wiRX0R vJfKfM2/TTQKxoFE1tGqEJ6n7anr2JNMhacsREh3CtZ+H/z5dd9L2nklLNf/BtB3 iiE8peHWTAkB0fSZcpu7ya/QXfVEB5803Fl+hN6uVOFhVnDzPystF4As9QvPVQg= = Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3v8hbgaa5f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 28 Dec 2023 09:33:34 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3BS9XX1Z007595 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 28 Dec 2023 09:33:33 GMT Received: from hu-jinlmao-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Thu, 28 Dec 2023 01:33:33 -0800 From: Mao Jinlong To: Suzuki K Poulose , Mike Leach , James Clark , Leo Yan , Alexander Shishkin CC: Mao Jinlong , , , , , Tingwei Zhang , Yuanfang Zhang , Tao Zhang Subject: [PATCH] coresight: Add coresight name support Date: Thu, 28 Dec 2023 01:33:19 -0800 Message-ID: <20231228093321.5522-1-quic_jinlmao@quicinc.com> X-Mailer: git-send-email 2.41.0 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 1vrc7teFwwSHAcIFVZv_acjCvHve53-h X-Proofpoint-GUID: 1vrc7teFwwSHAcIFVZv_acjCvHve53-h X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxlogscore=999 mlxscore=0 suspectscore=0 spamscore=0 phishscore=0 adultscore=0 impostorscore=0 priorityscore=1501 malwarescore=0 bulkscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312280076 Add coresight name support for custom names which will be easy to identify the device by the name. Signed-off-by: Mao Jinlong --- .../hwtracing/coresight/coresight-cti-core.c | 20 ++++++++------ drivers/hwtracing/coresight/coresight-dummy.c | 10 ++++--- .../hwtracing/coresight/coresight-platform.c | 27 +++++++++++++++++++ drivers/hwtracing/coresight/coresight-tpdm.c | 10 ++++--- include/linux/coresight.h | 1 + 5 files changed, 53 insertions(+), 15 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c index 3999d0a2cb60..60a1e76064a9 100644 --- a/drivers/hwtracing/coresight/coresight-cti-core.c +++ b/drivers/hwtracing/coresight/coresight-cti-core.c @@ -902,14 +902,18 @@ static int cti_probe(struct amba_device *adev, const struct amba_id *id) /* default to powered - could change on PM notifications */ drvdata->config.hw_powered = true; - /* set up device name - will depend if cpu bound or otherwise */ - if (drvdata->ctidev.cpu >= 0) - cti_desc.name = devm_kasprintf(dev, GFP_KERNEL, "cti_cpu%d", - drvdata->ctidev.cpu); - else - cti_desc.name = coresight_alloc_device_name(&cti_sys_devs, dev); - if (!cti_desc.name) - return -ENOMEM; + cti_desc.name = coresight_get_device_name(dev); + if (!cti_desc.name) { + /* set up device name - will depend if cpu bound or otherwise */ + if (drvdata->ctidev.cpu >= 0) + cti_desc.name = devm_kasprintf(dev, GFP_KERNEL, "cti_cpu%d", + drvdata->ctidev.cpu); + else { + cti_desc.name = coresight_alloc_device_name(&cti_sys_devs, dev); + if (!cti_desc.name) + return -ENOMEM; + } + } /* setup CPU power management handling for CPU bound CTI devices. */ ret = cti_pm_setup(drvdata); diff --git a/drivers/hwtracing/coresight/coresight-dummy.c b/drivers/hwtracing/coresight/coresight-dummy.c index e4deafae7bc2..b19cd400df79 100644 --- a/drivers/hwtracing/coresight/coresight-dummy.c +++ b/drivers/hwtracing/coresight/coresight-dummy.c @@ -76,10 +76,12 @@ static int dummy_probe(struct platform_device *pdev) struct coresight_desc desc = { 0 }; if (of_device_is_compatible(node, "arm,coresight-dummy-source")) { - - desc.name = coresight_alloc_device_name(&source_devs, dev); - if (!desc.name) - return -ENOMEM; + desc.name = coresight_get_device_name(dev); + if (!desc.name) { + desc.name = coresight_alloc_device_name(&source_devs, dev); + if (!desc.name) + return -ENOMEM; + } desc.type = CORESIGHT_DEV_TYPE_SOURCE; desc.subtype.source_subtype = diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 9d550f5697fa..284aa22a06b7 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -183,6 +183,18 @@ static int of_coresight_get_cpu(struct device *dev) return cpu; } +static const char *of_coresight_get_device_name(struct device *dev) +{ + const char *name = NULL; + + if (!dev->of_node) + return NULL; + + of_property_read_string(dev->of_node, "coresight-name", &name); + + return name; +} + /* * of_coresight_parse_endpoint : Parse the given output endpoint @ep * and fill the connection information in @pdata->out_conns @@ -315,6 +327,12 @@ static inline int of_coresight_get_cpu(struct device *dev) { return -ENODEV; } + +static inline const char *of_coresight_get_device_name(struct device *dev) +{ + return NULL; +} + #endif #ifdef CONFIG_ACPI @@ -794,6 +812,15 @@ int coresight_get_cpu(struct device *dev) } EXPORT_SYMBOL_GPL(coresight_get_cpu); +const char *coresight_get_device_name(struct device *dev) +{ + if (is_of_node(dev->fwnode)) + return of_coresight_get_device_name(dev); + else + return NULL; +} +EXPORT_SYMBOL_GPL(coresight_get_device_name); + struct coresight_platform_data * coresight_get_platform_data(struct device *dev) { diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index f4854af0431e..7735ff18c48e 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -201,9 +201,13 @@ static int tpdm_probe(struct amba_device *adev, const struct amba_id *id) drvdata->base = base; /* Set up coresight component description */ - desc.name = coresight_alloc_device_name(&tpdm_devs, dev); - if (!desc.name) - return -ENOMEM; + desc.name = coresight_get_device_name(dev); + if (!desc.name) { + desc.name = coresight_alloc_device_name(&tpdm_devs, dev); + if (!desc.name) + return -ENOMEM; + } + desc.type = CORESIGHT_DEV_TYPE_SOURCE; desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_OTHERS; desc.ops = &tpdm_cs_ops; diff --git a/include/linux/coresight.h b/include/linux/coresight.h index a269fffaf991..caa17c8af865 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -675,6 +675,7 @@ static inline void coresight_write64(struct coresight_device *csdev, u64 val, u3 #endif /* IS_ENABLED(CONFIG_CORESIGHT) */ extern int coresight_get_cpu(struct device *dev); +extern const char *coresight_get_device_name(struct device *dev); struct coresight_platform_data *coresight_get_platform_data(struct device *dev); struct coresight_connection *