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hwmon: (pmbus) Add support for Infineon Digital Multi-phase xdp152 family controllers
Add support for devices XDPE152C4, XDPE12584. Signed-off-by: Greg Schwendimann <Greg.Schwendimann@infineon.com> Link: https://lore.kernel.org/r/5e6d50e9b28140158f339b0de343eea4@infineon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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‎Documentation/hwmon/index.rst‎

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@@ -223,6 +223,7 @@ Hardware Monitoring Kernel Drivers
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wm8350
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xgene-hwmon
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xdpe12284
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xdpe152c4
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zl6100
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.. only:: subproject and html

‎Documentation/hwmon/xdpe152c4.rst‎

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.. SPDX-License-Identifier: GPL-2.0
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Kernel driver xdpe152
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=====================
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Supported chips:
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* Infineon XDPE152C4
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Prefix: 'xdpe152c4'
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* Infineon XDPE15284
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Prefix: 'xdpe15284'
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Authors:
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Greg Schwendimann <greg.schwendimann@infineon.com>
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Description
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-----------
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This driver implements support for Infineon Digital Multi-phase Controller
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XDPE152C4 and XDPE15284 dual loop voltage regulators.
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The devices are compliant with:
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- Intel VR13, VR13HC and VR14 rev 1.86
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converter specification.
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- Intel SVID rev 1.93. protocol.
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- PMBus rev 1.3.1 interface.
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Devices support linear format for reading input and output voltage, input
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and output current, input and output power and temperature.
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Devices support two pages for telemetry.
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The driver provides for current: input, maximum and critical thresholds
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and maximum and critical alarms. Low Critical thresholds and Low critical alarm are
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supported only for current output.
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The driver exports the following attributes for via the sysfs files, where
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indexes 1, 2 are for "iin" and 3, 4 for "iout":
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**curr[1-4]_crit**
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**curr[1-4]_crit_alarm**
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**curr[1-4]_input**
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**curr[1-4]_label**
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**curr[1-4]_max**
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**curr[1-4]_max_alarm**
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**curr[3-4]_lcrit**
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**curr[3-4]_lcrit_alarm**
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**curr[3-4]_rated_max**
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The driver provides for voltage: input, critical and low critical thresholds
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and critical and low critical alarms.
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The driver exports the following attributes for via the sysfs files, where
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indexes 1, 2 are for "vin" and 3, 4 for "vout":
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**in[1-4]_min**
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**in[1-4]_crit**
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**in[1-4_crit_alarm**
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**in[1-4]_input**
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**in[1-4]_label**
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**in[1-4]_max**
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**in[1-4]_max_alarm**
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**in[1-4]_min**
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**in[1-4]_min_alarm**
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**in[3-4]_lcrit**
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**in[3-4]_lcrit_alarm**
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**in[3-4]_rated_max**
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**in[3-4]_rated_min**
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The driver provides for power: input and alarms.
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The driver exports the following attributes for via the sysfs files, where
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indexes 1, 2 are for "pin" and 3, 4 for "pout":
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**power[1-2]_alarm**
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**power[1-4]_input**
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**power[1-4]_label**
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**power[1-4]_max**
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**power[1-4]_rated_max**
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The driver provides for temperature: input, maximum and critical thresholds
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and maximum and critical alarms.
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The driver exports the following attributes for via the sysfs files:
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**temp[1-2]_crit**
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**temp[1-2]_crit_alarm**
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**temp[1-2]_input**
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**temp[1-2]_max**
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**temp[1-2]_max_alarm**

‎drivers/hwmon/pmbus/Kconfig‎

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This driver can also be built as a module. If so, the module will
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be called ucd9200.
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config SENSORS_XDPE152
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tristate "Infineon XDPE152 family"
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help
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If you say yes here you get hardware monitoring support for Infineon
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XDPE15284, XDPE152C4, device.
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This driver can also be built as a module. If so, the module will
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be called xdpe152c4.
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config SENSORS_XDPE122
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tristate "Infineon XDPE122 family"
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help

‎drivers/hwmon/pmbus/Makefile‎

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obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o
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obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o
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obj-$(CONFIG_SENSORS_XDPE122) += xdpe12284.o
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obj-$(CONFIG_SENSORS_XDPE152) += xdpe152c4.o
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obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o
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obj-$(CONFIG_SENSORS_PIM4328) += pim4328.o

‎drivers/hwmon/pmbus/xdpe152c4.c‎

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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Hardware monitoring driver for Infineon Multi-phase Digital VR Controllers
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*
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* Copyright (c) 2022 Infineon Technologies. All rights reserved.
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include "pmbus.h"
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#define XDPE152_PAGE_NUM 2
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static struct pmbus_driver_info xdpe152_info = {
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.pages = XDPE152_PAGE_NUM,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.format[PSC_CURRENT_IN] = linear,
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.format[PSC_CURRENT_OUT] = linear,
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.format[PSC_POWER] = linear,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
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PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP |
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PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
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.func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
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PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
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PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
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};
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static int xdpe152_probe(struct i2c_client *client)
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{
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struct pmbus_driver_info *info;
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info = devm_kmemdup(&client->dev, &xdpe152_info, sizeof(*info),
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GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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return pmbus_do_probe(client, info);
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}
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static const struct i2c_device_id xdpe152_id[] = {
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{"xdpe152c4", 0},
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{"xdpe15284", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, xdpe152_id);
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static const struct of_device_id __maybe_unused xdpe152_of_match[] = {
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{.compatible = "infineon,xdpe152c4"},
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{.compatible = "infineon,xdpe15284"},
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{}
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};
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MODULE_DEVICE_TABLE(of, xdpe152_of_match);
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static struct i2c_driver xdpe152_driver = {
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.driver = {
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.name = "xdpe152c4",
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.of_match_table = of_match_ptr(xdpe152_of_match),
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},
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.probe_new = xdpe152_probe,
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.id_table = xdpe152_id,
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};
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module_i2c_driver(xdpe152_driver);
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MODULE_AUTHOR("Greg Schwendimann <greg.schwendimann@infineon.com>");
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MODULE_DESCRIPTION("PMBus driver for Infineon XDPE152 family");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(PMBUS);

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