From patchwork Mon Dec 18 16:29:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nuno Sa X-Patchwork-Id: 755592 Received: from mx0b-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) (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 1D3BD495DE; Mon, 18 Dec 2023 16:27:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=analog.com Received: from pps.filterd (m0375855.ppops.net [127.0.0.1]) by mx0b-00128a01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 3BIDLdRE028673; Mon, 18 Dec 2023 11:27:01 -0500 Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0b-00128a01.pphosted.com (PPS) with ESMTPS id 3v2pw7gu8x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 18 Dec 2023 11:27:00 -0500 (EST) Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 3BIGQx4c043888 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 18 Dec 2023 11:26:59 -0500 Received: from ASHBCASHYB5.ad.analog.com (10.64.17.133) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Mon, 18 Dec 2023 11:26:58 -0500 Received: from ASHBMBX9.ad.analog.com (10.64.17.10) by ASHBCASHYB5.ad.analog.com (10.64.17.133) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Mon, 18 Dec 2023 11:26:58 -0500 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Mon, 18 Dec 2023 11:26:58 -0500 Received: from [127.0.0.1] ([10.44.3.56]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 3BIGQiuX024955; Mon, 18 Dec 2023 11:26:55 -0500 From: Nuno Sa Date: Mon, 18 Dec 2023 17:29:43 +0100 Subject: [PATCH v4 2/3] hwmon: add fault attribute for voltage channels Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20231218-b4-ltc4282-support-v4-2-4fc51f7d04f0@analog.com> References: <20231218-b4-ltc4282-support-v4-0-4fc51f7d04f0@analog.com> In-Reply-To: <20231218-b4-ltc4282-support-v4-0-4fc51f7d04f0@analog.com> To: , , CC: Jean Delvare , Guenter Roeck , "Rob Herring" , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1702916989; l=2053; i=nuno.sa@analog.com; s=20231116; h=from:subject:message-id; bh=r1o0pDMD6C9kApbT6XPyA7QM8Q2x8NXC4A0uxJhogfY=; b=Jsd2GE/7nN1EWkMdtFQoD3V0LW3LybRYybsAcnBY73snIKZp5gGgVmbhkyWIEts5NtKMJgKzJ ueetgRB2bJ4BEvLySgT58R53iBXGYZZyvWKR8UrqjOfe72l4RUtIzIz X-Developer-Key: i=nuno.sa@analog.com; a=ed25519; pk=3NQwYA013OUYZsmDFBf8rmyyr5iQlxV/9H4/Df83o1E= X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: aLN8waTAYJsOlsUOW5PDLb8Amsem67UI X-Proofpoint-ORIG-GUID: aLN8waTAYJsOlsUOW5PDLb8Amsem67UI 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=2023-12-02_01,2023-11-30_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxscore=0 suspectscore=0 priorityscore=1501 mlxlogscore=880 malwarescore=0 spamscore=0 bulkscore=0 clxscore=1015 impostorscore=0 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312180121 Sometimes a voltage channel might have an hard failure (eg: a shorted MOSFET). Hence, add a fault attribute to report such failures. Signed-off-by: Nuno Sa --- Documentation/ABI/testing/sysfs-class-hwmon | 9 +++++++++ drivers/hwmon/hwmon.c | 1 + include/linux/hwmon.h | 2 ++ 3 files changed, 12 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-class-hwmon b/Documentation/ABI/testing/sysfs-class-hwmon index 3dac923c9b0e..6c4e68ad4a83 100644 --- a/Documentation/ABI/testing/sysfs-class-hwmon +++ b/Documentation/ABI/testing/sysfs-class-hwmon @@ -149,6 +149,15 @@ Description: RW +What: /sys/class/hwmon/hwmonX/inY_fault +Description: + Reports a voltage hard failure (eg: shorted component) + + - 1: Failed + - 0: Ok + + RO + What: /sys/class/hwmon/hwmonX/cpuY_vid Description: CPU core reference voltage. diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index c7dd3f5b2bd5..18705049ad61 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -510,6 +510,7 @@ static const char * const hwmon_in_attr_templates[] = { [hwmon_in_rated_min] = "in%d_rated_min", [hwmon_in_rated_max] = "in%d_rated_max", [hwmon_in_beep] = "in%d_beep", + [hwmon_in_fault] = "in%d_fault", }; static const char * const hwmon_curr_attr_templates[] = { diff --git a/include/linux/hwmon.h b/include/linux/hwmon.h index 8cd6a6b33593..67038479b0d1 100644 --- a/include/linux/hwmon.h +++ b/include/linux/hwmon.h @@ -141,6 +141,7 @@ enum hwmon_in_attributes { hwmon_in_rated_min, hwmon_in_rated_max, hwmon_in_beep, + hwmon_in_fault, }; #define HWMON_I_ENABLE BIT(hwmon_in_enable) @@ -162,6 +163,7 @@ enum hwmon_in_attributes { #define HWMON_I_RATED_MIN BIT(hwmon_in_rated_min) #define HWMON_I_RATED_MAX BIT(hwmon_in_rated_max) #define HWMON_I_BEEP BIT(hwmon_in_beep) +#define HWMON_I_FAULT BIT(hwmon_in_fault) enum hwmon_curr_attributes { hwmon_curr_enable,