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Howard.Chiu@quantatw.comgroeck
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hwmon: (pmbus) Add support for MPS Multi-phase mp5023
Add support for mp5023 device from Monolithic Power Systems, Inc. (MPS) vendor. This is a Hot-Swap Controller. Signed-off-by: Howard Chiu <howard.chiu@quantatw.com> Link: https://lore.kernel.org/r/HKAPR04MB400349AA406694FB976D78D096709@HKAPR04MB4003.apcprd04.prod.outlook.com [groeck: Added MODULE_IMPORT_NS, entry in index.rst] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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‎Documentation/hwmon/index.rst‎

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@@ -145,6 +145,7 @@ Hardware Monitoring Kernel Drivers
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mlxreg-fan
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mp2888
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mp2975
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mp5023
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nct6683
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nct6775
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nct7802

‎Documentation/hwmon/mp5023.rst‎

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.. SPDX-License-Identifier: GPL-2.0
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Kernel driver mp5023
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====================
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Supported chips:
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* MPS MP5023
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Prefix: 'mp5023'
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* Datasheet
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Publicly available at the MPS website : https://www.monolithicpower.com/en/mp5023.html
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Author:
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Howard Chiu <howard.chiu@quantatw.com>
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Description
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-----------
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This driver implements support for Monolithic Power Systems, Inc. (MPS)
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MP5023 Hot-Swap Controller.
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Device complaint with:
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- PMBus rev 1.3 interface.
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Device supports direct format for reading input voltage, output voltage,
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output current, input power and temperature.
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The driver exports the following attributes via the 'sysfs' files
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for input voltage:
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**in1_input**
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**in1_label**
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**in1_max**
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**in1_max_alarm**
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**in1_min**
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**in1_min_alarm**
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The driver provides the following attributes for output voltage:
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**in2_input**
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**in2_label**
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**in2_alarm**
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The driver provides the following attributes for output current:
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**curr1_input**
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**curr1_label**
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**curr1_alarm**
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**curr1_max**
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The driver provides the following attributes for input power:
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**power1_input**
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**power1_label**
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**power1_alarm**
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The driver provides the following attributes for temperature:
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**temp1_input**
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**temp1_max**
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**temp1_max_alarm**
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**temp1_crit**
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**temp1_crit_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 mp2975.
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config SENSORS_MP5023
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tristate "MPS MP5023"
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help
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If you say yes here you get hardware monitoring support for MPS
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MP5023.
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This driver can also be built as a module. If so, the module will
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be called mp5023.
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config SENSORS_PIM4328
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tristate "Flex PIM4328 and compatibles"
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help

‎drivers/hwmon/pmbus/Makefile‎

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@@ -32,6 +32,7 @@ obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
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obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
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obj-$(CONFIG_SENSORS_MP2888) += mp2888.o
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obj-$(CONFIG_SENSORS_MP2975) += mp2975.o
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obj-$(CONFIG_SENSORS_MP5023) += mp5023.o
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obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o
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obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o
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obj-$(CONFIG_SENSORS_Q54SJ108A2) += q54sj108a2.o

‎drivers/hwmon/pmbus/mp5023.c‎

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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for MPS MP5023 Hot-Swap Controller
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*/
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include "pmbus.h"
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static struct pmbus_driver_info mp5023_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_CURRENT_OUT] = direct,
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.format[PSC_POWER] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.m[PSC_VOLTAGE_IN] = 32,
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.b[PSC_VOLTAGE_IN] = 0,
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.R[PSC_VOLTAGE_IN] = 0,
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.m[PSC_VOLTAGE_OUT] = 32,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = 0,
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.m[PSC_CURRENT_OUT] = 16,
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.b[PSC_CURRENT_OUT] = 0,
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.R[PSC_CURRENT_OUT] = 0,
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.m[PSC_POWER] = 1,
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.b[PSC_POWER] = 0,
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.R[PSC_POWER] = 0,
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.m[PSC_TEMPERATURE] = 2,
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.b[PSC_TEMPERATURE] = 0,
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.R[PSC_TEMPERATURE] = 0,
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.func[0] =
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PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT |
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PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
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};
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static int mp5023_probe(struct i2c_client *client)
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{
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return pmbus_do_probe(client, &mp5023_info);
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}
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static const struct of_device_id __maybe_unused mp5023_of_match[] = {
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{ .compatible = "mps,mp5023", },
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{}
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};
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MODULE_DEVICE_TABLE(of, mp5023_of_match);
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static struct i2c_driver mp5023_driver = {
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.driver = {
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.name = "mp5023",
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.of_match_table = of_match_ptr(mp5023_of_match),
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},
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.probe_new = mp5023_probe,
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};
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module_i2c_driver(mp5023_driver);
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MODULE_AUTHOR("Howard Chiu <howard.chiu@quantatw.com>");
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MODULE_DESCRIPTION("PMBus driver for MPS MP5023 HSC");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(PMBUS);

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