From patchwork Fri Apr 12 20:37:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Patrick Leis X-Patchwork-Id: 10899121 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 188C513B5 for ; Fri, 12 Apr 2019 20:38:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F283428CA9 for ; Fri, 12 Apr 2019 20:38:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E421628EA9; Fri, 12 Apr 2019 20:38:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, USER_IN_DEF_DKIM_WL autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4365628CA9 for ; Fri, 12 Apr 2019 20:38:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726905AbfDLUiD (ORCPT ); Fri, 12 Apr 2019 16:38:03 -0400 Received: from mail-ua1-f74.google.com ([209.85.222.74]:43753 "EHLO mail-ua1-f74.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726777AbfDLUiC (ORCPT ); Fri, 12 Apr 2019 16:38:02 -0400 Received: by mail-ua1-f74.google.com with SMTP id o12so1567160uaj.10 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=ejWjsUignT2+Paqb4vpqLBZkvznJ3ooPCTLzR2+kcduY70qtOjh3kiVR4upPcH/Z7m rMWXgCCQY7Ta3NXzXdup8HjtPMHN7/YtTSaDPhdVHEog7JxjhxwT0Lqg+ReGchF2fQJx IGIOxQWbtzI+X8K67NB7TXbJ8WsLYiGbdndNGyG56uuRsfMOFRaWrO2f5kLPhwXeHWsN f/zN35WsBTvv4JzbjIW2TwacF2+IDfPAyCh4JC9BQ0Rgmgre4S7t8Dz6wIE94IvnSFq9 Vq+gdUc/QENbRWIEwnG6uJv7KaPAenH4vfOOVRSk5oo7qDTSNjAO+fre2lJx6n5oosZM /qPA== X-Gm-Message-State: APjAAAWzceklvBsBrX0b2YGpz4YaNaabWRS1HImSrbCBiM2YVInu8QKZ cB93Y/Omo4w4CYel19K9uH1IAUu5YEll 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 Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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");