From e20a7198a20fcd406809ccf25e6331331d352718 Mon Sep 17 00:00:00 2001 From: Chris Packham Date: Mon, 1 Mar 2021 16:59:54 +1300 Subject: hwmon: (pmbus) Add driver for Infineon IR36021 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The IR36021 is a dual‐loop digital multi‐phase buck controller. Signed-off-by: Chris Packham Link: https://lore.kernel.org/r/20210301035954.16713-3-chris.packham@alliedtelesis.co.nz Signed-off-by: Guenter Roeck --- drivers/hwmon/pmbus/Kconfig | 9 +++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/ir36021.c | 79 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 89 insertions(+) create mode 100644 drivers/hwmon/pmbus/ir36021.c (limited to 'drivers/hwmon') diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 32d2fc850621..ee8c27b3b83d 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -84,6 +84,15 @@ config SENSORS_IR35221 This driver can also be built as a module. If so, the module will be called ir35221. +config SENSORS_IR36021 + tristate "Infineon IR36021" + help + If you say yes here you get hardware monitoring support for Infineon + IR36021. + + This driver can also be built as a module. If so, the module will + be called ir36021. + config SENSORS_IR38064 tristate "Infineon IR38064" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 6a4ba0fdc1db..685a6bc2b15f 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o obj-$(CONFIG_SENSORS_INSPUR_IPSPS) += inspur-ipsps.o obj-$(CONFIG_SENSORS_IR35221) += ir35221.o +obj-$(CONFIG_SENSORS_IR36021) += ir36021.o obj-$(CONFIG_SENSORS_IR38064) += ir38064.o obj-$(CONFIG_SENSORS_IRPS5401) += irps5401.o obj-$(CONFIG_SENSORS_ISL68137) += isl68137.o diff --git a/drivers/hwmon/pmbus/ir36021.c b/drivers/hwmon/pmbus/ir36021.c new file mode 100644 index 000000000000..4767e39cc965 --- /dev/null +++ b/drivers/hwmon/pmbus/ir36021.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for Infineon IR36021 + * + * Copyright (c) 2021 Allied Telesis + */ +#include +#include +#include +#include +#include +#include "pmbus.h" + +static struct pmbus_driver_info ir36021_info = { + .pages = 1, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = linear, + .format[PSC_CURRENT_IN] = linear, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .format[PSC_TEMPERATURE] = linear, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT + | PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT + | PMBUS_HAVE_PIN | PMBUS_HAVE_POUT + | PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 + | PMBUS_HAVE_STATUS_TEMP, +}; + +static int ir36021_probe(struct i2c_client *client) +{ + u8 buf[I2C_SMBUS_BLOCK_MAX]; + int ret; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_BYTE_DATA + | I2C_FUNC_SMBUS_READ_WORD_DATA + | I2C_FUNC_SMBUS_READ_BLOCK_DATA)) + return -ENODEV; + + ret = i2c_smbus_read_i2c_block_data(client, PMBUS_MFR_MODEL, 2, buf); + if (ret < 0) { + dev_err(&client->dev, "Failed to read PMBUS_MFR_MODEL\n"); + return ret; + } + if (ret != 2 || buf[0] != 0x01 || buf[1] != 0x2d) { + dev_err(&client->dev, "MFR_MODEL unrecognised\n"); + return -ENODEV; + } + + return pmbus_do_probe(client, &ir36021_info); +} + +static const struct i2c_device_id ir36021_id[] = { + { "ir36021", 0 }, + {}, +}; +MODULE_DEVICE_TABLE(i2c, ir36021_id); + +static const struct of_device_id __maybe_unused ir36021_of_id[] = { + { .compatible = "infineon,ir36021" }, + {}, +}; +MODULE_DEVICE_TABLE(of, ir36021_of_id); + +static struct i2c_driver ir36021_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "ir36021", + .of_match_table = of_match_ptr(ir36021_of_id), + }, + .probe_new = ir36021_probe, + .id_table = ir36021_id, +}; + +module_i2c_driver(ir36021_driver); + +MODULE_AUTHOR("Chris Packham "); +MODULE_DESCRIPTION("PMBus driver for Infineon IR36021"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3