From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0CBEC282CE for ; Fri, 12 Apr 2019 20:38:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A48AE2082E for ; Fri, 12 Apr 2019 20:38:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="OtVAHK2Y" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726963AbfDLUiD (ORCPT ); Fri, 12 Apr 2019 16:38:03 -0400 Received: from mail-vk1-f201.google.com ([209.85.221.201]:54254 "EHLO mail-vk1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726771AbfDLUiC (ORCPT ); Fri, 12 Apr 2019 16:38:02 -0400 Received: by mail-vk1-f201.google.com with SMTP id q204so4476943vkf.20 for ; Fri, 12 Apr 2019 13:38:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=VKjDrHZEkQu2DTPlAKa1rGuu6IGa4ghwL+vjd5mFttY=; b=OtVAHK2YXP6VYiHkJTtnUxQMcpoJbqq7sTP4y6efIiXU4PpPCNoEUasr8VpS8MsW/C L+VItvRTi+O+YGBABZyXVMmy6PP2+FdV7hAuMFLD1E+yhEWpBRvE0C1hJfCMEFlyBzi1 Iyc9CsxQNQIfaWLK0KhvxChoXQwidpQSw9PdRQsJZuzDy2a2FzGV+2YpqXbcz2F6PpyK btbQUwRq8kd/oNh8IU2UuOyLOpEzXwvzJ/S7oRAPvB98YPv+8r9K2dpYlP9FlriCQEdW JSxRvStG8shoLKyI1Qpq616sFlawJlSlKmiAM7U/uwdHa3L342feqgtOUBXAv6XoV9qk HVBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=VKjDrHZEkQu2DTPlAKa1rGuu6IGa4ghwL+vjd5mFttY=; b=Ju3m+K+VPPMWqCCEncw4675TRVnt9t0IHyKxbrytk5wRQqXUxpFNEh0Twrc2OqO01P mGunuWeNE0QR80qae3ky9XCAl9SNrFlvxx8HJOVPYax96n499xT4T1qumE2o/1Dj3I0s hv5emN2t/aLoy48pX//ZQLuSFfAfnectNI9quGsIv9hILZrfad0QdyXJDxlvLGwQYy4R qEt+1zc2qGU9YiwmTuuzvz2ZHLye60bgjaHf4Q24NOQteCR3nKPaZRVxa4mbPAEgzkA7 9WWnWaP4o6XVdFvlXzYW2vHzox9TIsVeY/b98wwU90V1kNJyumO10lXoRycUuYpiSIN/ yehQ== X-Gm-Message-State: APjAAAW0m1xKqQt/Ezg0PqDhGfC9u9tIKJ3+IgFpNvToWmYOOk3VBOQl iNCvCtqLsv0AxRdZuSaiaxaBKMOR4nRm X-Google-Smtp-Source: APXvYqzJHMrloPprZM49F4YlSowtoDXU2/QLGWc8sqpdwGsaP7ihnddV0HKvrf0T0sMNdGU6cn4tdEEs1oUn X-Received: by 2002:ab0:3410:: with SMTP id z16mr79254uap.12.1555101481354; Fri, 12 Apr 2019 13:38:01 -0700 (PDT) Date: Fri, 12 Apr 2019 13:37:56 -0700 Message-Id: <20190412203756.67329-1-venture@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.21.0.392.gf8f6787159e-goog Subject: [PATCH v3] hwmon: (pmbus/ir38064): Add driver for Infineon IR38064 Voltage Regulator From: Patrick Venture To: venture@google.com, jdelvare@suse.com, linux@roeck-us.net, corbet@lwn.net Cc: Maxim Sloyko , linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Maxim Sloyko Add the pmbus driver for the Infineon ir38064 voltage regulator. VOUT_MODE is not supported by the device. The driver fakes linear16 mode with exponent value -8. The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however this driver does not enable them. Signed-off-by: Maxim Sloyko Signed-off-by: Patrick Venture --- v3: - Updated commit message to indicate behaviors. v2: - Cleaned up weird tabbing behavior in doc. v1: - Initial patchset. --- Documentation/hwmon/ir38064 | 64 +++++++++++++++++++++++++++++++++++ drivers/hwmon/pmbus/Kconfig | 9 +++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/ir38064.c | 60 ++++++++++++++++++++++++++++++++ 4 files changed, 134 insertions(+) create mode 100644 Documentation/hwmon/ir38064 create mode 100644 drivers/hwmon/pmbus/ir38064.c diff --git a/Documentation/hwmon/ir38064 b/Documentation/hwmon/ir38064 new file mode 100644 index 0000000000000..618779a329da0 --- /dev/null +++ b/Documentation/hwmon/ir38064 @@ -0,0 +1,64 @@ +Kernel driver ir38064 +===================== + +Supported chips: + * Infineon IR38064 + Prefix: 'ir38064' + Addresses scanned: - + Datasheet: Publicly available at the Infineon webiste + https://www.infineon.com/dgdl/Infineon-IR38064MTRPBF-DS-v03_07-EN.pdf?fileId=5546d462584d1d4a0158db0d9efb67ca + +Datasheet is not publicly available. + + +Authors: + Maxim Sloyko + Patrick Venture + +Description +----------- + +IR38064 is a Single-input Voltage, Synchronous Buck Regulator, DC-DC Converter. + +Usage Notes +----------- + +This driver does not probe for PMBus devices. You will have to instantiate +devices explicitly. + +Sysfs attributes +---------------- + +curr1_label "iout1" +curr1_input Measured output current +curr1_crit Critical maximum current +curr1_crit_alarm Current critical high alarm +curr1_max Maximum current +curr1_max_alarm Current high alarm + +in1_label "vin" +in1_input Measured input voltage +in1_crit Critical maximum input voltage +in1_crit_alarm Input voltage critical high alarm +in1_min Minimum input voltage +in1_min_alarm Input voltage low alarm + +in2_label "vout1" +in2_input Measured output voltage +in2_lcrit Critical minimum output voltage +in2_lcrit_alarm Output voltage critical low alarm +in2_crit Critical maximum output voltage +in2_crit_alarm Output voltage critical high alarm +in2_max Maximum output voltage +in2_max_alarm Output voltage high alarm +in2_min Minimum output voltage +in2_min_alarm Output voltage low alarm + +power1_label "pout1" +power1_input Measured output power + +temp1_input Measured temperature +temp1_crit Critical high temperature +temp1_crit_alarm Chip temperature critical high alarm +temp1_max Maximum temperature +temp1_max_alarm Chip temperature high alarm diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 629cb45f8557a..de87abab990e5 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -54,6 +54,15 @@ config SENSORS_IR35221 This driver can also be built as a module. If so, the module will be called ir35521. +config SENSORS_IR38064 + tristate "Infineon IR38064" + help + If you say yes here you get hardware monitoring support for Infineon + IR38064. + + This driver can also be built as a module. If so, the module will + be called ir38064. + config SENSORS_LM25066 tristate "National Semiconductor LM25066 and compatibles" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index ea0e39518c216..7d1fa6b3c8c93 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o obj-$(CONFIG_SENSORS_IR35221) += ir35221.o +obj-$(CONFIG_SENSORS_IR38064) += ir38064.o obj-$(CONFIG_SENSORS_LM25066) += lm25066.o obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o obj-$(CONFIG_SENSORS_LTC3815) += ltc3815.o diff --git a/drivers/hwmon/pmbus/ir38064.c b/drivers/hwmon/pmbus/ir38064.c new file mode 100644 index 0000000000000..4b957ebb6fa71 --- /dev/null +++ b/drivers/hwmon/pmbus/ir38064.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for Infineon IR38064 + * + * Copyright (c) 2017 Google Inc + * + */ + +#include +#include +#include +#include +#include +#include "pmbus.h" + +static struct pmbus_driver_info ir38064_info = { + .pages = 1, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = direct, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .format[PSC_TEMPERATURE] = linear, + .m[PSC_VOLTAGE_OUT] = 256, + .b[PSC_VOLTAGE_OUT] = 0, + .R[PSC_VOLTAGE_OUT] = 0, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT + | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP + | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_POUT, +}; + +static int ir38064_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + return pmbus_do_probe(client, id, &ir38064_info); +} + +static const struct i2c_device_id ir38064_id[] = { + {"ir38064", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, ir38064_id); + +/* This is the driver that will be inserted */ +static struct i2c_driver ir38064_driver = { + .driver = { + .name = "ir38064", + }, + .probe = ir38064_probe, + .remove = pmbus_do_remove, + .id_table = ir38064_id, +}; + +module_i2c_driver(ir38064_driver); + +MODULE_AUTHOR("Maxim Sloyko "); +MODULE_DESCRIPTION("PMBus driver for Infineon IR38064"); +MODULE_LICENSE("GPL"); -- 2.21.0.392.gf8f6787159e-goog