Commit e1c5cd7e authored by Howard.Chiu@quantatw.com's avatar Howard.Chiu@quantatw.com Committed by Guenter Roeck
Browse files

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: default avatarHoward 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: default avatarGuenter Roeck <linux@roeck-us.net>
parent 0710e2b9

Documentation/hwmon/index.rst

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Original line number Original line Diff line number Diff line
@@ -145,6 +145,7 @@ Hardware Monitoring Kernel Drivers 
   mlxreg-fan

   mlxreg-fan

   mp2888

   mp2888

   mp2975

   mp2975

   mp5023

   nct6683

   nct6683

   nct6775

   nct6775

   nct7802

   nct7802

Documentation/hwmon/mp5023.rst

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.. SPDX-License-Identifier: GPL-2.0



Kernel driver mp5023

====================



Supported chips:



  * MPS MP5023



    Prefix: 'mp5023'



  * Datasheet



    Publicly available at the MPS website : https://www.monolithicpower.com/en/mp5023.html



Author:



	Howard Chiu <howard.chiu@quantatw.com>



Description

-----------



This driver implements support for Monolithic Power Systems, Inc. (MPS)

MP5023 Hot-Swap Controller.



Device complaint with:



- PMBus rev 1.3 interface.



Device supports direct format for reading input voltage, output voltage,

output current, input power and temperature.



The driver exports the following attributes via the 'sysfs' files

for input voltage:



**in1_input**



**in1_label**



**in1_max**



**in1_max_alarm**



**in1_min**



**in1_min_alarm**



The driver provides the following attributes for output voltage:



**in2_input**



**in2_label**



**in2_alarm**



The driver provides the following attributes for output current:



**curr1_input**



**curr1_label**



**curr1_alarm**



**curr1_max**



The driver provides the following attributes for input power:



**power1_input**



**power1_label**



**power1_alarm**



The driver provides the following attributes for temperature:



**temp1_input**



**temp1_max**



**temp1_max_alarm**



**temp1_crit**



**temp1_crit_alarm**

drivers/hwmon/pmbus/Kconfig

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@@ -286,6 +286,15 @@ config SENSORS_MP2975 
	  This driver can also be built as a module. If so, the module will

	  This driver can also be built as a module. If so, the module will

	  be called mp2975.

	  be called mp2975.





config SENSORS_MP5023

	tristate "MPS MP5023"

	help

	  If you say yes here you get hardware monitoring support for MPS

	  MP5023.



	  This driver can also be built as a module. If so, the module will

	  be called mp5023.



config SENSORS_PIM4328

config SENSORS_PIM4328

	tristate "Flex PIM4328 and compatibles"

	tristate "Flex PIM4328 and compatibles"

	help

	help

drivers/hwmon/pmbus/Makefile

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@@ -32,6 +32,7 @@ obj-$(CONFIG_SENSORS_MAX34440) += max34440.o 
obj-$(CONFIG_SENSORS_MAX8688)	+= max8688.o

obj-$(CONFIG_SENSORS_MAX8688)	+= max8688.o

obj-$(CONFIG_SENSORS_MP2888)	+= mp2888.o

obj-$(CONFIG_SENSORS_MP2888)	+= mp2888.o

obj-$(CONFIG_SENSORS_MP2975)	+= mp2975.o

obj-$(CONFIG_SENSORS_MP2975)	+= mp2975.o

obj-$(CONFIG_SENSORS_MP5023)	+= mp5023.o

obj-$(CONFIG_SENSORS_PM6764TR)	+= pm6764tr.o

obj-$(CONFIG_SENSORS_PM6764TR)	+= pm6764tr.o

obj-$(CONFIG_SENSORS_PXE1610)	+= pxe1610.o

obj-$(CONFIG_SENSORS_PXE1610)	+= pxe1610.o

obj-$(CONFIG_SENSORS_Q54SJ108A2)	+= q54sj108a2.o

obj-$(CONFIG_SENSORS_Q54SJ108A2)	+= q54sj108a2.o

drivers/hwmon/pmbus/mp5023.c

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// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * Driver for MPS MP5023 Hot-Swap Controller

 */



#include <linux/i2c.h>

#include <linux/module.h>

#include <linux/of_device.h>

#include "pmbus.h"



static struct pmbus_driver_info mp5023_info = {

	.pages = 1,



	.format[PSC_VOLTAGE_IN] = direct,

	.format[PSC_VOLTAGE_OUT] = direct,

	.format[PSC_CURRENT_OUT] = direct,

	.format[PSC_POWER] = direct,

	.format[PSC_TEMPERATURE] = direct,



	.m[PSC_VOLTAGE_IN] = 32,

	.b[PSC_VOLTAGE_IN] = 0,

	.R[PSC_VOLTAGE_IN] = 0,

	.m[PSC_VOLTAGE_OUT] = 32,

	.b[PSC_VOLTAGE_OUT] = 0,

	.R[PSC_VOLTAGE_OUT] = 0,

	.m[PSC_CURRENT_OUT] = 16,

	.b[PSC_CURRENT_OUT] = 0,

	.R[PSC_CURRENT_OUT] = 0,

	.m[PSC_POWER] = 1,

	.b[PSC_POWER] = 0,

	.R[PSC_POWER] = 0,

	.m[PSC_TEMPERATURE] = 2,

	.b[PSC_TEMPERATURE] = 0,

	.R[PSC_TEMPERATURE] = 0,



	.func[0] =

		PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN |

		PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT |

		PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,

};



static int mp5023_probe(struct i2c_client *client)

{

	return pmbus_do_probe(client, &mp5023_info);

}



static const struct of_device_id __maybe_unused mp5023_of_match[] = {

	{ .compatible = "mps,mp5023", },

	{}

};



MODULE_DEVICE_TABLE(of, mp5023_of_match);



static struct i2c_driver mp5023_driver = {

	.driver = {

		   .name = "mp5023",

		   .of_match_table = of_match_ptr(mp5023_of_match),

	},

	.probe_new = mp5023_probe,

};



module_i2c_driver(mp5023_driver);



MODULE_AUTHOR("Howard Chiu <howard.chiu@quantatw.com>");

MODULE_DESCRIPTION("PMBus driver for MPS MP5023 HSC");

MODULE_LICENSE("GPL");

MODULE_IMPORT_NS(PMBUS);