From patchwork Mon Apr 24 10:13:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Delphine CC Chiu X-Patchwork-Id: 13221986 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 AE70BC7618E for ; Mon, 24 Apr 2023 10:14:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231601AbjDXKO0 (ORCPT ); Mon, 24 Apr 2023 06:14:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231240AbjDXKOX (ORCPT ); Mon, 24 Apr 2023 06:14:23 -0400 Received: from APC01-TYZ-obe.outbound.protection.outlook.com (mail-tyzapc01on2049.outbound.protection.outlook.com [40.107.117.49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 519D740C5; Mon, 24 Apr 2023 03:14:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=JFGqq6AwlDyo5uSHLmSPNBl0k3aGyOIrZf69Ra7NLKLk8Hpgy9NO7YAz2rmeVCGQqBFSQMLcVAf4k8MTEJqHs9J+8iZ5yGN9vGQOR2yEWiLtUYyRQHvloCUjaW6lzQCuzzPyym9br6uH0vF5pHTj4rKIvKw2rc6c5evfkl6cLvCgMUTr6lRilA/U4LUVJtPgHvGxc7xeFCFAxBGLMYEGIdxL6kDb7bUOoUvDmGEorSnG01Ho6fdBg8IGKQAP3SYDZh5AN/EHDLGnel88S69tcQiS2dFBTCzdxUf/J2RtNeIgcuSPCDFke85ooR6owVIHuyg6ni0oLzb87RgFBTK/GQ== 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=Lf7AFk93plJGjm+CcW1hU/4HpFIClbcuMRZi1phwoh8=; b=DQqiSL58ZpCatPxlmrVXwnH9uV6I868bxIJbbBZ7qJWwuf0oxbX3T29JUZ3NwOY7uinjPm+aGtpZ6vn3mDOsfJzJt/iLCH0Dh0GrFhNudjgA1cOhRmi9NkvxWVmzs2i1GQarL6uBQAa9+nTSyld9t/+utPNv19DhYxLy2Xf2BfHZQm2OD8qHCD1LXMsHDMHILzKwhyx3zKZdxXllbah03fIzrOCDz/H8D9Thmph1f7LavZyADwQbuTYZ5eIS/oBvjBXvazzF1miWQtHi3mrmDWxtJncN45+nPQcqqMTMFATOrGpucFTBmMmbqT+JY4yt4sMp7LWSY5ajz7GuG7lNhQ== 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=Lf7AFk93plJGjm+CcW1hU/4HpFIClbcuMRZi1phwoh8=; b=pfHZb8TIA+HwvP49jQVxb6GeKf0VVZqRKkBx63pHovEi3LTLDPLDvSipRoCH51xFjyIcDMHrAOnY67hngK0WdzWg2OTL1/nUQ+v1du0VF/qbcjQSj/ncWqQ+u6JKR9fRKae4t/lWcy8SeGGvStTOp6RdSThOVBR6gp0wWz6Lo9xr0yDKwYCcAoB/Fec0nBuzErZwGPfSvEDzoC2HgR11x4S6hVPKdwb0OU4NoTeJTqfmDhvvx24SnzRznSk3qTmEk3DmaiQPDO+NkgKiuHeq5I7LHG3jybG+AMW0weT5iMicYUyl3Z9riwr+pTUYyz1qrTdsQjgCB+0GZcHtoZTArA== Received: from PS2PR01CA0016.apcprd01.prod.exchangelabs.com (2603:1096:300:2d::28) by KL1PR04MB6781.apcprd04.prod.outlook.com (2603:1096:820:d2::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6319.33; Mon, 24 Apr 2023 10:14:09 +0000 Received: from PSAAPC01FT059.eop-APC01.prod.protection.outlook.com (2603:1096:300:2d:cafe::ea) by PS2PR01CA0016.outlook.office365.com (2603:1096:300:2d::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6319.33 via Frontend Transport; Mon, 24 Apr 2023 10:14:09 +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 PSAAPC01FT059.mail.protection.outlook.com (10.13.38.139) with Microsoft SMTP Server id 15.20.6340.19 via Frontend Transport; Mon, 24 Apr 2023 10:14:08 +0000 From: Delphine CC Chiu To: patrick@stwcx.xyz, Delphine CC Chiu , Guenter Roeck , Jean Delvare Cc: Rob Herring , Krzysztof Kozlowski , linux-i2c@vger.kernel.org, linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 2/2] hwmon: pmbus: Add ltc4286 driver Date: Mon, 24 Apr 2023 18:13:50 +0800 Message-Id: <20230424101352.28117-3-Delphine_CC_Chiu@Wiwynn.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230424101352.28117-1-Delphine_CC_Chiu@Wiwynn.com> References: <20230424101352.28117-1-Delphine_CC_Chiu@Wiwynn.com> X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PSAAPC01FT059:EE_|KL1PR04MB6781:EE_ MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: d07d1931-df8e-4df9-8684-08db44aca4d1 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:(13230028)(6069001)(4636009)(136003)(39860400002)(346002)(396003)(376002)(451199021)(36840700001)(46966006)(81166007)(356005)(82740400003)(336012)(6506007)(6512007)(1076003)(26005)(2616005)(956004)(40480700001)(186003)(83380400001)(66574015)(47076005)(36860700001)(2906002)(8676002)(8936002)(5660300002)(9316004)(36756003)(54906003)(478600001)(6486002)(6666004)(110136005)(316002)(36736006)(4326008)(41300700001)(70206006)(70586007)(86362001)(82310400005);DIR:OUT;SFP:1101; X-OriginatorOrg: wiwynn.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2023 10:14:08.7222 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d07d1931-df8e-4df9-8684-08db44aca4d1 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: PSAAPC01FT059.eop-APC01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: KL1PR04MB6781 Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Add support for ltc4286 driver Signed-off-by: Delphine CC Chiu --- drivers/hwmon/pmbus/Kconfig | 9 +++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/ltc4286.c | 142 ++++++++++++++++++++++++++++++++++ 3 files changed, 152 insertions(+) create mode 100644 drivers/hwmon/pmbus/ltc4286.c diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 59d9a7430499..1230d910d681 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -218,6 +218,15 @@ config SENSORS_LTC3815 This driver can also be built as a module. If so, the module will be called ltc3815. +config SENSORS_LTC4286 + bool "Linear Technologies LTC4286" + help + If you say yes here you get hardware monitoring support for Linear + Technology LTC4286. + + This driver can also be built as a module. If so, the module will + be called ltc4286. + config SENSORS_MAX15301 tristate "Maxim MAX15301" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 3ae019916267..540265539580 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -23,6 +23,7 @@ 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..474f4ec9107c --- /dev/null +++ b/drivers/hwmon/pmbus/ltc4286.c @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Hardware monitoring driver for LTC4286 Hot-Swap Controller + * + * Copyright (c) 2023 Linear Technology + */ + +#include +#include +#include +#include +#include +#include +#include "pmbus.h" + +// LTC4286 register +#define LTC4286_MFR_CONFIG1 (0xF2) + +// LTC4286 configuration +#define VRANGE_SELECT (1 << 1) + +#define LTC4286_MFR_ID_SIZE 3 + +enum chips { ltc4286, ltc4287 }; + +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, + .R[PSC_CURRENT_OUT] = 3 - 6, + .m[PSC_POWER] = 1, + .b[PSC_POWER] = 0, + .R[PSC_POWER] = 4 - 6, + .m[PSC_TEMPERATURE] = 1, + .b[PSC_TEMPERATURE] = 273.15, + .R[PSC_TEMPERATURE] = 0, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | + PMBUS_HAVE_PIN | PMBUS_HAVE_TEMP, +}; + +static int ltc4286_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int ret; + u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1]; + struct device *dev = &client->dev; + 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 default manufacturer id is LTC + */ + if (ret != LTC4286_MFR_ID_SIZE || + strncmp(block_buffer, "LTC", LTC4286_MFR_ID_SIZE)) { + dev_err(&client->dev, "unsupported manufacturer id\n"); + return -ENODEV; + } + + 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; + } + + ret = of_property_read_u32(client->dev.of_node, "rsense-micro-ohms", + &rsense); + if (ret < 0) + return ret; + + if (rsense == 0) + return -EINVAL; + + info = <c4286_info; + + /* Default of VRANGE_SELECT = 1 */ + if (device_property_read_bool(dev, "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; /* VRANGE_SELECT = 0, 25.6V */ + i2c_smbus_write_word_data(client, LTC4286_MFR_CONFIG1, 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 i2c_device_id ltc4286_id[] = { { "ltc4286", ltc4286 }, + { "ltc4287", ltc4287 }, + {} }; +MODULE_DEVICE_TABLE(i2c, ltc4286_id); + +static const struct of_device_id ltc4286_of_match[] = { + { .compatible = "lltc,ltc4286" }, + { .compatible = "lltc,ltc4287" }, + {} +}; + +/* This is the driver that will be inserted */ +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");