From patchwork Thu Nov 9 04:48:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: PeterYin X-Patchwork-Id: 13450606 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 9A9ADC4332F for ; Thu, 9 Nov 2023 04:51:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232312AbjKIEvL (ORCPT ); Wed, 8 Nov 2023 23:51:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55410 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232338AbjKIEvI (ORCPT ); Wed, 8 Nov 2023 23:51:08 -0500 Received: from mail-oa1-x2a.google.com (mail-oa1-x2a.google.com [IPv6:2001:4860:4864:20::2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 051BF26AE; Wed, 8 Nov 2023 20:51:05 -0800 (PST) Received: by mail-oa1-x2a.google.com with SMTP id 586e51a60fabf-1eb7a8e9dd0so241687fac.3; Wed, 08 Nov 2023 20:51:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1699505462; x=1700110262; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=mGGNBzEmDwLCmCeF+BF2lSFyKjl0VHCNvq4NKl4HYq0=; b=lnamVj+qoYTo4ToZOzTROLOOWOScCgRBoM0gwajTXMBy5hrHU11W5jTGtvBPz1t3eK uv+QxOrOkzmEKttyVm2aX0AQEiqC8Lf0oY/VRrpMGnyy/fNTBZGRpbw8B3fiSGnse4iy bbqyBkVpK2sCyheEMHGrYF2ccw//LVcD6LGtPD+VwEtrIzvs/2gy1c8SV69qBC+FcSsk Vd2EqmMt81UyAEMcIfthL9ExW1/O9qYamPNAR/Sl4iUpHdobbHi9oMq/ZHZEOMdbB95p Y7k3GOq0YrgAB5YGAGSN/c0c1ITzzCcksPOovgv1C6118rFf1yOXXPyUAXO+xLIO99Gq LN5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699505462; x=1700110262; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=mGGNBzEmDwLCmCeF+BF2lSFyKjl0VHCNvq4NKl4HYq0=; b=KZy+sJOWSKaCxUT2lsvI/eC2Llo1IBwNCCGsdX2alnlbTfkmEwufXba9AR7ipw3d5l dIdDy/GgE7MPO7E6aHPhO1PxWNw+IMm9PK1O2jS6WlrP+zIRmp/lewe7rpMzda3+IYMI K4UqIQEMmIz6sosHsPRyrra2pX4QYvOV0sTmN2wMu1owq5awpW9jQqWSb0BUA87kpWwS wGs17w6Ln7e6m62PVjEoqkGoitoxDqTYGttStv5Seg/jYYtB105HFvz9yjMAflnQDdu5 nfpXpaZpVF20ucIGabIxs6Z5EGYm635j3J+TGRXSx47otCD5yJcqNThCOopIlQS54CXg iN1Q== X-Gm-Message-State: AOJu0YwsR0m5AARD4jxWnyEo+5D3tvw/GeSgVh2A9ElSZHuqCzyaNo7l B5DEZ1SrgNwirrkfkrT0GZg= X-Google-Smtp-Source: AGHT+IHYTKeZvifAhG7xLuzZDBu6daMdLBcSru8velNUH89o+9nGIFmqmDSsHfW5mkgiSyLAlboosg== X-Received: by 2002:a05:6870:de15:b0:1bf:6ec:dd4d with SMTP id qg21-20020a056870de1500b001bf06ecdd4dmr4211085oab.28.1699505462465; Wed, 08 Nov 2023 20:51:02 -0800 (PST) Received: from peter-bmc.dhcpserver.bu9bmc.local (1-34-21-66.hinet-ip.hinet.net. [1.34.21.66]) by smtp.gmail.com with ESMTPSA id q189-20020a6343c6000000b005bcebc93d7asm3869035pga.47.2023.11.08.20.51.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Nov 2023 20:51:02 -0800 (PST) From: Peter Yin To: patrick@stwcx.xyz, Jean Delvare , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , Peter Yin , 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 support for MPS Multi-phase mp5990 Date: Thu, 9 Nov 2023 12:48:43 +0800 Message-Id: <20231109044844.614007-3-peteryin.openbmc@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231109044844.614007-1-peteryin.openbmc@gmail.com> References: <20231109044844.614007-1-peteryin.openbmc@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Add support for mp5990 device from Monolithic Power Systems, Inc. (MPS) vendor. This is a Hot-Swap Controller. Signed-off-by: Peter Yin --- Documentation/hwmon/index.rst | 1 + Documentation/hwmon/mp5990.rst | 84 +++++++++++++++++++++++++++++++++ drivers/hwmon/pmbus/Kconfig | 9 ++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/mp5990.c | 86 ++++++++++++++++++++++++++++++++++ 5 files changed, 181 insertions(+) create mode 100644 Documentation/hwmon/mp5990.rst create mode 100644 drivers/hwmon/pmbus/mp5990.c diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index 042e1cf9501b..8c70e10fc795 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -157,6 +157,7 @@ Hardware Monitoring Kernel Drivers mp2888 mp2975 mp5023 + mp5990 nct6683 nct6775 nct7802 diff --git a/Documentation/hwmon/mp5990.rst b/Documentation/hwmon/mp5990.rst new file mode 100644 index 000000000000..d2da0f767530 --- /dev/null +++ b/Documentation/hwmon/mp5990.rst @@ -0,0 +1,84 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Kernel driver mp5990 +==================== + +Supported chips: + + * MPS MP5990 + + Prefix: 'mp5990' + + * Datasheet + + Publicly available at the MPS website : https://www.monolithicpower.com/en/mp5990.html + +Author: + + Peter Yin + +Description +----------- + +This driver implements support for Monolithic Power Systems, Inc. (MPS) +MP5990 Hot-Swap Controller. + +Device compliant with: + +- PMBus rev 1.3 interface. + +Device supports direct format for reading input voltage, output voltage, +output current, input power and temperature. + +The driver exports the following attributes via the 'sysfs' files +for input voltage: + +**in1_input** + +**in1_label** + +**in1_max** + +**in1_max_alarm** + +**in1_min** + +**in1_min_alarm** + +The driver provides the following attributes for output voltage: + +**in2_input** + +**in2_label** + +**in2_alarm** + +The driver provides the following attributes for output current: + +**curr1_input** + +**curr1_label** + +**curr1_alarm** + +**curr1_max** + +The driver provides the following attributes for input power: + +**power1_input** + +**power1_label** + +**power1_alarm** + +The driver provides the following attributes for temperature: + +**temp1_input** + +**temp1_max** + +**temp1_max_alarm** + +**temp1_crit** + +**temp1_crit_alarm** diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 270b6336b76d..65a116f7744d 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -326,6 +326,15 @@ config SENSORS_MP5023 This driver can also be built as a module. If so, the module will be called mp5023. +config SENSORS_MP5990 + tristate "MPS MP5990" + help + If you say yes here you get hardware monitoring support for MPS + MP5990. + + This driver can also be built as a module. If so, the module will + be called mp5990. + config SENSORS_MPQ7932_REGULATOR bool "Regulator support for MPQ7932" depends on SENSORS_MPQ7932 && REGULATOR diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 84ee960a6c2d..212d9ca0acc9 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -35,6 +35,7 @@ obj-$(CONFIG_SENSORS_MAX8688) += max8688.o obj-$(CONFIG_SENSORS_MP2888) += mp2888.o obj-$(CONFIG_SENSORS_MP2975) += mp2975.o obj-$(CONFIG_SENSORS_MP5023) += mp5023.o +obj-$(CONFIG_SENSORS_MP5990) += mp5990.o obj-$(CONFIG_SENSORS_MPQ7932) += mpq7932.o obj-$(CONFIG_SENSORS_PLI1209BC) += pli1209bc.o obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o diff --git a/drivers/hwmon/pmbus/mp5990.c b/drivers/hwmon/pmbus/mp5990.c new file mode 100644 index 000000000000..fb3ac9c5d44e --- /dev/null +++ b/drivers/hwmon/pmbus/mp5990.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for MPS MP5990 Hot-Swap Controller + */ + +#include +#include +#include +#include +#include "pmbus.h" + +static int mp5990_read_byte_data(struct i2c_client *client, int page, int reg) +{ + switch (reg) { + case PMBUS_VOUT_MODE: + /* The datasheet does not support the VOUT command, + * but the device responds with a default value of 0x17. + * In the standard, 0x17 represents linear mode. However, + * for the MP5990, the VOUT linear mode is linear11, not linear16. + * Therefore, we should enforce the VOUT in the direct format. + */ + return PB_VOUT_MODE_DIRECT; + default: + return -ENODATA; + } +} + +static struct pmbus_driver_info mp5990_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] = 0, + .m[PSC_VOLTAGE_OUT] = 32, + .b[PSC_VOLTAGE_OUT] = 0, + .R[PSC_VOLTAGE_OUT] = 0, + .m[PSC_CURRENT_OUT] = 16, + .b[PSC_CURRENT_OUT] = 0, + .R[PSC_CURRENT_OUT] = 0, + .m[PSC_POWER] = 1, + .b[PSC_POWER] = 0, + .R[PSC_POWER] = 0, + .m[PSC_TEMPERATURE] = 1, + .b[PSC_TEMPERATURE] = 0, + .R[PSC_TEMPERATURE] = 0, + .func[0] = + PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN | + PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT | + PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP, + .read_byte_data = mp5990_read_byte_data, +}; + +static int mp5990_probe(struct i2c_client *client) +{ + return pmbus_do_probe(client, &mp5990_info); +} + +static const struct of_device_id mp5990_of_match[] = { + { .compatible = "mps,mp5990" }, + {} +}; + +static const struct i2c_device_id mp5990_id[] = { + {"mp5990", 0}, + { } +}; +MODULE_DEVICE_TABLE(i2c, mp5990_id); + +static struct i2c_driver mp5990_driver = { + .driver = { + .name = "mp5990", + .of_match_table = mp5990_of_match, + }, + .probe = mp5990_probe, + .id_table = mp5990_id, +}; +module_i2c_driver(mp5990_driver); + +MODULE_AUTHOR("Peter Yin "); +MODULE_DESCRIPTION("PMBus driver for MP5990 HSC"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(PMBUS);