From patchwork Thu Oct 26 08:15:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Delphine_CC_Chiu/WYHQ/Wiwynn X-Patchwork-Id: 13437338 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25166C25B6B for ; Thu, 26 Oct 2023 08:15:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229567AbjJZIPf (ORCPT ); Thu, 26 Oct 2023 04:15:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344490AbjJZIPd (ORCPT ); Thu, 26 Oct 2023 04:15:33 -0400 Received: from APC01-PSA-obe.outbound.protection.outlook.com (mail-psaapc01on2074.outbound.protection.outlook.com [40.107.255.74]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 14E8DDE; Thu, 26 Oct 2023 01:15:31 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=QAzpJo4rxYM8smCh+h4575R7r2pAye8XMzewLyNeVTfloU7Gc4ihC/b8flNXrwLKhVGX733VyuhIKRTvndF/LaGN2FiExQwb4cRP8CmEslgArsM4GJ//bO3YgxmOa03yPfCjFtmWLKE0iXlnurEWqeOwNGgV5dSnLOQlEB4qFrfjQ4QSzBg2oy0qOKJKrcGW1QAveeZ0AbpoFD8laR8CpqMSEohJ/DZ9GidKaSGBJa+i5eka0k5cbvVNh1usZhq+QEyIvw60QC4zCbSbda2bthSBn+fncfdbmzv0E7v+p/DEsz9h3xr9412RljjTqj+S3QSOWd0gybrr9lFPorYZRA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=Pu1kH+s04gH8m5YD7GMUEKbURDMiPBqqqxutgBogaIE=; b=MtkYlWDzfuyayC73nqj26yWoeIvGkeCuGt0soLwsf+nKXvon67vGXrNzV243l4wq6BfYDuIsfncwgL1iujhVcbFCyHKehy6+54veQay1zScXb87yP8WRXx3+KpP6+Oa+wY0gxO+cFlavFajAdC0nt4P5umXbxLJo6VFkrf8c+XdqfOUJ9u6za0qM3DGig7wts+pSxmKgzCJLJteCnGJM35EdeTtGBs5QHGczVAbKvA4r/ZExJeEpkTZoGq9CCofcqrn5TatANIXIc76jikaWF4DxEAn6h9Rcm1gZ+opaKNgOPVMp3c2G+p/w9+LKdsVtCAe8DVM7FzLmIh5O0ym+Yg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=fail (sender ip is 211.20.1.79) smtp.rcpttodomain=stwcx.xyz smtp.mailfrom=wiwynn.com; dmarc=fail (p=quarantine sp=quarantine pct=100) action=quarantine header.from=wiwynn.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wiwynn.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Pu1kH+s04gH8m5YD7GMUEKbURDMiPBqqqxutgBogaIE=; b=Jl3RDHHnd02qcDxzoeMH8PzgeQr42CV8zXuzbHlnqpuqFcoErsQtwUDvDgEI7fIr9AkzqxfyzfVIWK13Rk7X62R0ohAiwFyG7o5GFNZwZ5jKgIgnMlxuHUehNHMX5BG9qf4FGpfdLEAvgK/ZQ2r2XYBMvyHdD2yqBX5xskADUk/WBHMMNKQwbf2UJ+G79vw63MOd/yCved5YmuEEwvZThm+7ZR/V9bG0bsOlcDsiDpE1dr27r8iC7qB0JgFXFqQoJjp+gKpz9DLLFHZcbLPxXTbq94OtU9siC2lTtcEHwWH89aLzODgPxyGUfVoQj+ZJl+jclqNAoz3BnF31kd3Khw== Received: from KL1PR0401CA0019.apcprd04.prod.outlook.com (2603:1096:820:e::6) by JH0PR04MB7310.apcprd04.prod.outlook.com (2603:1096:990:39::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6907.31; Thu, 26 Oct 2023 08:15:27 +0000 Received: from HK2PEPF00006FB0.apcprd02.prod.outlook.com (2603:1096:820:e:cafe::8f) by KL1PR0401CA0019.outlook.office365.com (2603:1096:820:e::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6933.22 via Frontend Transport; Thu, 26 Oct 2023 08:15:27 +0000 X-MS-Exchange-Authentication-Results: spf=fail (sender IP is 211.20.1.79) smtp.mailfrom=Wiwynn.com; dkim=none (message not signed) header.d=none;dmarc=fail action=quarantine header.from=Wiwynn.com; Received-SPF: Fail (protection.outlook.com: domain of Wiwynn.com does not designate 211.20.1.79 as permitted sender) receiver=protection.outlook.com; client-ip=211.20.1.79; helo=localhost.localdomain; Received: from localhost.localdomain (211.20.1.79) by HK2PEPF00006FB0.mail.protection.outlook.com (10.167.8.6) with Microsoft SMTP Server id 15.20.6838.22 via Frontend Transport; Thu, 26 Oct 2023 08:15:26 +0000 From: Delphine CC Chiu To: patrick@stwcx.xyz, Delphine CC Chiu , Jean Delvare , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Jonathan Corbet , linux-i2c@vger.kernel.org, linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Subject: [PATCH v2 1/2] dt-bindings: hwmon: Add lltc ltc4286 driver bindings Date: Thu, 26 Oct 2023 16:15:11 +0800 Message-Id: <20231026081514.3610343-2-Delphine_CC_Chiu@Wiwynn.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231026081514.3610343-1-Delphine_CC_Chiu@Wiwynn.com> References: <20231026081514.3610343-1-Delphine_CC_Chiu@Wiwynn.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: HK2PEPF00006FB0:EE_|JH0PR04MB7310:EE_ X-MS-Office365-Filtering-Correlation-Id: ee681f8f-6081-409a-28bc-08dbd5fbb61e X-MS-Exchange-AtpMessageProperties: SA X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:211.20.1.79;CTRY:TW;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:localhost.localdomain;PTR:211-20-1-79.hinet-ip.hinet.net;CAT:NONE;SFS:(13230031)(6069001)(4636009)(396003)(136003)(39860400002)(376002)(346002)(64100799003)(1800799009)(451199024)(82310400011)(186009)(46966006)(36840700001)(2906002)(82740400003)(6506007)(5660300002)(316002)(356005)(70586007)(110136005)(81166007)(478600001)(6666004)(1076003)(41300700001)(36736006)(70206006)(6486002)(47076005)(6512007)(966005)(40480700001)(2616005)(86362001)(336012)(36860700001)(36756003)(7416002)(4326008)(956004)(8676002)(8936002)(26005)(9316004);DIR:OUT;SFP:1101; X-OriginatorOrg: wiwynn.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Oct 2023 08:15:26.9338 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ee681f8f-6081-409a-28bc-08dbd5fbb61e X-MS-Exchange-CrossTenant-Id: da6e0628-fc83-4caf-9dd2-73061cbab167 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=da6e0628-fc83-4caf-9dd2-73061cbab167;Ip=[211.20.1.79];Helo=[localhost.localdomain] X-MS-Exchange-CrossTenant-AuthSource: HK2PEPF00006FB0.apcprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: JH0PR04MB7310 Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Add a device tree bindings for ltc4286 driver. Signed-off-by: Delphine CC Chiu Changelog: v2 - Revise vrange_select_25p6 to adi,vrange-select-25p6 - Add type for adi,vrange-select-25p6 - Revise rsense-micro-ohms to shunt-resistor-micro-ohms --- .../bindings/hwmon/lltc,ltc4286.yaml | 50 +++++++++++++++++++ MAINTAINERS | 10 ++++ 2 files changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml diff --git a/Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml b/Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml new file mode 100644 index 000000000000..17022de657bb --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/lltc,ltc4286.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: LTC4286 power monitors + +maintainers: + - Delphine CC Chiu + +properties: + compatible: + enum: + - lltc,ltc4286 + - lltc,ltc4287 + + reg: + maxItems: 1 + + adi,vrange-select-25p6: + description: + This property is a bool parameter to represent the + voltage range is 25.6 or not for this chip. + type: boolean + + shunt-resistor-micro-ohms: + description: + Resistor value in micro-Ohm + +required: + - compatible + - reg + - shunt-resistor-micro-ohms + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + power-sensor@40 { + compatible = "lltc,ltc4286"; + reg = <0x40>; + adi,vrange-select-25p6; + shunt-resistor-micro-ohms = <300>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 668d1e24452d..89e5fff4bba9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12466,6 +12466,16 @@ S: Maintained F: Documentation/hwmon/ltc4261.rst F: drivers/hwmon/ltc4261.c +LTC4286 HARDWARE MONITOR DRIVER +M: Delphine CC Chiu +L: linux-i2c@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml +F: Documentation/devicetree/bindings/hwmon/ltc4286.rst +F: drivers/hwmon/pmbus/Kconfig +F: drivers/hwmon/pmbus/Makefile +F: drivers/hwmon/pmbus/ltc4286.c + LTC4306 I2C MULTIPLEXER DRIVER M: Michael Hennerich L: linux-i2c@vger.kernel.org From patchwork Thu Oct 26 08:15:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Delphine_CC_Chiu/WYHQ/Wiwynn X-Patchwork-Id: 13437339 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CA5FDC25B70 for ; Thu, 26 Oct 2023 08:15:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344611AbjJZIPv (ORCPT ); Thu, 26 Oct 2023 04:15:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54200 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344565AbjJZIPt (ORCPT ); Thu, 26 Oct 2023 04:15:49 -0400 Received: from APC01-SG2-obe.outbound.protection.outlook.com (mail-sgaapc01on2066.outbound.protection.outlook.com [40.107.215.66]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B44CD1AD; Thu, 26 Oct 2023 01:15:40 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=hPuSGPo/D3COBjathZDYigeciDctLLJxzCSBhJuA7hRK3bjSz88XCO/j+EmMftl3ilVRmSdoirn8RYuKmws9jcn4Q8j+BIHc6BjMs/E+tO5bAIUdODRp4M9ZWsbm6c7LlCPKyM5JuOGjVxOhpCZhEzB+NbxX8loD71gg4/3QQzF+sp6r9pYPl4D0a8awJUVGcQk1rBNp+lffWPAXY7+9TjgHrgN9vyaTUXv590ThpCrjQPOSUPl3trPNV2/pfFP6+bsjviR6zrFTqd/Dj/v5H7M8eHxhd16fPfdkVGLTBLglr70jErJmqCpilq7fs6e1hPYd9rpA0Kf7Wz9sotgT2Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=bBhCActUbsHpPlHX8Tjd8bX/IAC3leV3emLJHxMRWNU=; b=RfcVApdPpIlCCT7fBK3rWJ6HUYHSJFZ4Ns+KO7B7HGR2aBYZ0wq1TQ9o3Vl3rL0j2r2jX2SsQw/urcQVFZsUOgYC/wtJObtWwWfDWU63CFyAijWALLQxaZj9gZ155LbLCeTus/UCekDHWuB8jdeezIGZdtxr1ob7N2hoqm2+bY0A2Fqogj6QuIorp1u7DQ0dvVAmI7CqD7hPNtqPsnzkDcM/HJ/8+odWqC14U8E5RY8azDECuFREjSCiM/A/A+VKLxkawDWVBU1x5i/fCrWb5GfyLGmT7Kq2J2IhaxTMuF49TWEr1n0n3s1N8WLfTNuqsd7YQnwtnor3wXLqkUQDGA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=fail (sender ip is 211.20.1.79) smtp.rcpttodomain=stwcx.xyz smtp.mailfrom=wiwynn.com; dmarc=fail (p=quarantine sp=quarantine pct=100) action=quarantine header.from=wiwynn.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wiwynn.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=bBhCActUbsHpPlHX8Tjd8bX/IAC3leV3emLJHxMRWNU=; b=ikgTZQwZ2ar7yG3xQTef4EcrQ2WHGrHQ907z8zMD+6yeYMA9GkoJx6cFFLgW5lt+pvmGwZbHUyHYcfY/E0Vs5Q/WgbiVpIHBPQyzXckJWYfAjX0Zv5Nb30NniY7uI7AUK/VYxqeyzmnxFLUIJ5AL1qzVZnmV4o+In0fzwTPs6nBedvJrLhiUiVQYF7jsc6ITWQwhbsVJUUaeDgnyM1D+aU9AKJcoumjiwMsAQsgXR83u398Jey5oDNK+2mOltwADZppFsvR1HCFpHI+sr6nSCkbf8J0H/GQOrVsTrsh9bQvbWQskGynNpX5CVLxO7UaJlxekCKn8vMmOOekILbgj+g== Received: from KL1PR0401CA0026.apcprd04.prod.outlook.com (2603:1096:820:e::13) by PUZPR04MB6916.apcprd04.prod.outlook.com (2603:1096:301:11e::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6933.19; Thu, 26 Oct 2023 08:15:35 +0000 Received: from HK2PEPF00006FB0.apcprd02.prod.outlook.com (2603:1096:820:e:cafe::6a) by KL1PR0401CA0026.outlook.office365.com (2603:1096:820:e::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6907.34 via Frontend Transport; Thu, 26 Oct 2023 08:15:34 +0000 X-MS-Exchange-Authentication-Results: spf=fail (sender IP is 211.20.1.79) smtp.mailfrom=Wiwynn.com; dkim=none (message not signed) header.d=none;dmarc=fail action=quarantine header.from=Wiwynn.com; Received-SPF: Fail (protection.outlook.com: domain of Wiwynn.com does not designate 211.20.1.79 as permitted sender) receiver=protection.outlook.com; client-ip=211.20.1.79; helo=localhost.localdomain; Received: from localhost.localdomain (211.20.1.79) by HK2PEPF00006FB0.mail.protection.outlook.com (10.167.8.6) with Microsoft SMTP Server id 15.20.6838.22 via Frontend Transport; Thu, 26 Oct 2023 08:15:34 +0000 From: Delphine CC Chiu To: patrick@stwcx.xyz, Jean Delvare , Guenter Roeck , Jonathan Corbet , Delphine CC Chiu Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-i2c@vger.kernel.org, linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Subject: [PATCH v2 2/2] hwmon: pmbus: Add ltc4286 driver Date: Thu, 26 Oct 2023 16:15:12 +0800 Message-Id: <20231026081514.3610343-3-Delphine_CC_Chiu@Wiwynn.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231026081514.3610343-1-Delphine_CC_Chiu@Wiwynn.com> References: <20231026081514.3610343-1-Delphine_CC_Chiu@Wiwynn.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: HK2PEPF00006FB0:EE_|PUZPR04MB6916:EE_ X-MS-Office365-Filtering-Correlation-Id: 9a2b1238-939d-443d-96a8-08dbd5fbba58 X-MS-Exchange-AtpMessageProperties: SA X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:211.20.1.79;CTRY:TW;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:localhost.localdomain;PTR:211-20-1-79.hinet-ip.hinet.net;CAT:NONE;SFS:(13230031)(6069001)(4636009)(376002)(346002)(396003)(39860400002)(136003)(1800799009)(64100799003)(451199024)(186009)(82310400011)(36840700001)(46966006)(41300700001)(2906002)(7416002)(5660300002)(8936002)(316002)(36736006)(70206006)(70586007)(54906003)(4326008)(8676002)(110136005)(478600001)(966005)(6486002)(6666004)(6506007)(6512007)(7049001)(2616005)(336012)(956004)(1076003)(26005)(66574015)(40480700001)(83380400001)(86362001)(82740400003)(356005)(47076005)(81166007)(9316004)(36860700001)(36756003);DIR:OUT;SFP:1101; X-OriginatorOrg: wiwynn.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Oct 2023 08:15:34.0276 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9a2b1238-939d-443d-96a8-08dbd5fbba58 X-MS-Exchange-CrossTenant-Id: da6e0628-fc83-4caf-9dd2-73061cbab167 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=da6e0628-fc83-4caf-9dd2-73061cbab167;Ip=[211.20.1.79];Helo=[localhost.localdomain] X-MS-Exchange-CrossTenant-AuthSource: HK2PEPF00006FB0.apcprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PUZPR04MB6916 Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Add a driver to support ltc4286 chip Signed-off-by: Delphine CC Chiu Changelog: v2 - Revise Linear Technologies LTC4286 to Analog Devices LTC4286 in Kconfig - Add more description for this driver in Kconfig - Add some comments for MBR setting in ltc4286.c - Add ltc4286.rst --- Documentation/hwmon/ltc4286.rst | 79 ++++++++++++++++ drivers/hwmon/pmbus/Kconfig | 9 ++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/ltc4286.c | 160 ++++++++++++++++++++++++++++++++ 4 files changed, 249 insertions(+) create mode 100644 Documentation/hwmon/ltc4286.rst create mode 100644 drivers/hwmon/pmbus/ltc4286.c diff --git a/Documentation/hwmon/ltc4286.rst b/Documentation/hwmon/ltc4286.rst new file mode 100644 index 000000000000..9cae50b7478d --- /dev/null +++ b/Documentation/hwmon/ltc4286.rst @@ -0,0 +1,79 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +Kernel driver ltc4286 +===================== + +Supported chips: + + * Analog Devices LTC4286 + + Prefix: 'ltc4286' + + Addresses scanned: - + + Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4286.pdf + + * Analog Devices LTC4287 + + Prefix: 'ltc4287' + + Addresses scanned: - + + Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4287.pdf + +Author: Delphine CC Chiu + + +Description +----------- + +This driver supports hardware monitoring for Analog Devices LTC4286 +and LTC4287 Hot-Swap Controller and Digital Power Monitors. + +LTC4286 and LTC4287 are hot-swap controllers that allow a circuit board +to be removed from or inserted into a live backplane. They also feature +current and voltage readback via an integrated 12 bit analog-to-digital +converter (ADC), accessed using a PMBus interface. + +The driver is a client driver to the core PMBus driver. Please see +Documentation/hwmon/pmbus.rst for details on PMBus client drivers. + + +Usage Notes +----------- + +This driver does not auto-detect devices. You will have to instantiate the +devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for +details. + +The shunt value in micro-ohms can be set via device tree at compile-time. Please +refer to the Documentation/devicetree/bindings/hwmon/lltc,ltc4286.yaml for bindings +if the device tree is used. + + +Platform data support +--------------------- + +The driver supports standard PMBus driver platform data. Please see +Documentation/hwmon/pmbus.rst for details. + + +Sysfs entries +------------- + +The following attributes are supported. Limits are read-write, history reset +attributes are write-only, all other attributes are read-only. + +======================= ======================================================= +inX_label "vin1" or "vout1" depending on chip variant and + configuration. +inX_input Measured voltage. + +curr1_label "iout1" +curr1_input Measured current. + +power1_label "pin1" +power1_input Input power. + +temp1_input Chip temperature. +======================= ======================================================= diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index b4e93bd5835e..f2b53e8abc3c 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -226,6 +226,15 @@ config SENSORS_LTC3815 This driver can also be built as a module. If so, the module will be called ltc3815. +config SENSORS_LTC4286 + bool "Analog Devices LTC4286" + help + LTC4286 is an integrated solution for hot swap applications that + allows a board to be safely inserted and removed from a live + backplane. + This chip could be used to monitor voltage, current, ...etc. + If you say yes here you get hardware monitoring support for Analog + Devices LTC4286. config SENSORS_MAX15301 tristate "Maxim MAX15301" diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 84ee960a6c2d..94e28f6d6a61 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_SENSORS_LM25066) += lm25066.o obj-$(CONFIG_SENSORS_LT7182S) += lt7182s.o obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o obj-$(CONFIG_SENSORS_LTC3815) += ltc3815.o +obj-$(CONFIG_SENSORS_LTC4286) += ltc4286.o obj-$(CONFIG_SENSORS_MAX15301) += max15301.o obj-$(CONFIG_SENSORS_MAX16064) += max16064.o obj-$(CONFIG_SENSORS_MAX16601) += max16601.o diff --git a/drivers/hwmon/pmbus/ltc4286.c b/drivers/hwmon/pmbus/ltc4286.c new file mode 100644 index 000000000000..e1d72fe9587c --- /dev/null +++ b/drivers/hwmon/pmbus/ltc4286.c @@ -0,0 +1,160 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include +#include +#include +#include +#include +#include +#include "pmbus.h" + +/* LTC4286 register */ +#define LTC4286_MFR_CONFIG1 0xF2 + +/* LTC4286 configuration */ +#define VRANGE_SELECT_BIT BIT(1) + +#define LTC4286_MFR_ID_SIZE 3 + +enum chips { ltc4286, ltc4287 }; + +/* + * Initialize the MBR as default settings which is referred to LTC4286 datasheet + * (March 22, 2022 version) table 3 page 16 + */ +static struct pmbus_driver_info ltc4286_info = { + .pages = 1, + .format[PSC_VOLTAGE_IN] = direct, + .format[PSC_VOLTAGE_OUT] = direct, + .format[PSC_CURRENT_OUT] = direct, + .format[PSC_POWER] = direct, + .format[PSC_TEMPERATURE] = direct, + .m[PSC_VOLTAGE_IN] = 32, + .b[PSC_VOLTAGE_IN] = 0, + .R[PSC_VOLTAGE_IN] = 1, + .m[PSC_VOLTAGE_OUT] = 32, + .b[PSC_VOLTAGE_OUT] = 0, + .R[PSC_VOLTAGE_OUT] = 1, + .m[PSC_CURRENT_OUT] = 1024, + .b[PSC_CURRENT_OUT] = 0, + /* + * The rsense value used in MBR formula in LTC4286 datasheet should be ohm unit. + * However, the rsense value that user input is mirco ohm. + * Thus, the MBR setting which involves rsense should be shifted by 6 digits. + */ + .R[PSC_CURRENT_OUT] = 3 - 6, + .m[PSC_POWER] = 1, + .b[PSC_POWER] = 0, + /* + * The rsense value used in MBR formula in LTC4286 datasheet should be ohm unit. + * However, the rsense value that user input is mirco ohm. + * Thus, the MBR setting which involves rsense should be shifted by 6 digits. + */ + .R[PSC_POWER] = 4 - 6, + .m[PSC_TEMPERATURE] = 1, + .b[PSC_TEMPERATURE] = 273, + .R[PSC_TEMPERATURE] = 0, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | + PMBUS_HAVE_PIN | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_TEMP, +}; + +static const struct i2c_device_id ltc4286_id[] = { { "ltc4286", ltc4286 }, + { "ltc4287", ltc4287 }, + {} }; +MODULE_DEVICE_TABLE(i2c, ltc4286_id); + +static int ltc4286_probe(struct i2c_client *client) +{ + int ret; + const struct i2c_device_id *mid; + u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1]; + struct pmbus_driver_info *info; + u32 rsense; + + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer); + if (ret < 0) { + dev_err(&client->dev, "failed to read manufacturer id\n"); + return ret; + } + + /* + * Refer to ltc4286 datasheet page 20 + * the manufacturer id is LTC + */ + if (ret != LTC4286_MFR_ID_SIZE || + strncmp(block_buffer, "LTC", LTC4286_MFR_ID_SIZE)) { + return dev_err_probe(&client->dev, ret, + "failed to read manufacturer id\n"); + } + + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); + if (ret < 0) { + dev_err(&client->dev, "failed to read manufacturer model\n"); + return ret; + } + + for (mid = ltc4286_id; mid->name[0]; mid++) { + if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) + break; + } + + ret = of_property_read_u32(client->dev.of_node, + "shunt-resistor-micro-ohms", &rsense); + if (ret < 0) + return ret; + + if (rsense == 0) + return -EINVAL; + + info = <c4286_info; + + /* Default of VRANGE_SELECT = 1, 102.4V */ + if (device_property_read_bool(&client->dev, "adi,vrange-select-25p6")) { + /* Setup MFR1 CONFIG register bit 1 VRANGE_SELECT */ + ret = i2c_smbus_read_word_data(client, LTC4286_MFR_CONFIG1); + if (ret < 0) { + dev_err(&client->dev, + "failed to read manufacturer configuration one\n"); + return ret; + } + + ret &= ~VRANGE_SELECT_BIT; /* VRANGE_SELECT = 0, 25.6V */ + ret = i2c_smbus_write_word_data(client, LTC4286_MFR_CONFIG1, + ret); + if (ret < 0) { + dev_err(&client->dev, "failed to set vrange\n"); + return ret; + } + + info->m[PSC_VOLTAGE_IN] = 128; + info->m[PSC_VOLTAGE_OUT] = 128; + info->m[PSC_POWER] = 4 * rsense; + } else + info->m[PSC_POWER] = rsense; + + info->m[PSC_CURRENT_OUT] = 1024 * rsense; + + return pmbus_do_probe(client, info); +} + +static const struct of_device_id ltc4286_of_match[] = { + { .compatible = "lltc,ltc4286" }, + { .compatible = "lltc,ltc4287" }, + {} +}; + +static struct i2c_driver ltc4286_driver = { + .driver = { + .name = "ltc4286", + .of_match_table = ltc4286_of_match, + }, + .probe = ltc4286_probe, + .id_table = ltc4286_id, +}; + +module_i2c_driver(ltc4286_driver); + +MODULE_AUTHOR("Delphine CC Chiu "); +MODULE_DESCRIPTION("PMBUS driver for LTC4286 and compatibles"); +MODULE_LICENSE("GPL");