hwmon: (pmbus) Add support for MAX20751 (1f61cab8) · Commits · 戴 / test

Documentation/hwmon/max20751

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		Kernel driver max20751
		======================

		Supported chips:
		* maxim MAX20751
		Prefix: 'max20751'
		Addresses scanned: -
		Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX20751.pdf
		Application note: http://pdfserv.maximintegrated.com/en/an/AN5941.pdf

		Author: Guenter Roeck <linux@roeck-us.net>


		Description
		-----------

		This driver supports MAX20751 Multiphase Master with PMBus Interface
		and Internal Buck Converter.

		The driver is a client driver to the core PMBus driver.
		Please see Documentation/hwmon/pmbus for details on PMBus client drivers.


		Usage Notes
		-----------

		This driver does not auto-detect devices. You will have to instantiate the
		devices explicitly. Please see Documentation/i2c/instantiating-devices for
		details.


		Platform data support
		---------------------

		The driver supports standard PMBus driver platform data.


		Sysfs entries
		-------------

		The following attributes are supported.

		in1_label "vin1"
		in1_input Measured voltage.
		in1_min Minimum input voltage.
		in1_max Maximum input voltage.
		in1_lcrit Critical minimum input voltage.
		in1_crit Critical maximum input voltage.
		in1_min_alarm Input voltage low alarm.
		in1_lcrit_alarm Input voltage critical low alarm.
		in1_min_alarm Input voltage low alarm.
		in1_max_alarm Input voltage high alarm.

		in2_label "vout1"
		in2_input Measured voltage.
		in2_min Minimum output voltage.
		in2_max Maximum output voltage.
		in2_lcrit Critical minimum output voltage.
		in2_crit Critical maximum output voltage.
		in2_min_alarm Output voltage low alarm.
		in2_lcrit_alarm Output voltage critical low alarm.
		in2_min_alarm Output voltage low alarm.
		in2_max_alarm Output voltage high alarm.

		curr1_input Measured output current.
		curr1_label "iout1"
		curr1_max Maximum output current.
		curr1_alarm Current high alarm.

		temp1_input Measured temperature.
		temp1_max Maximum temperature.
		temp1_crit Critical high temperature.
		temp1_max_alarm Chip temperature high alarm.
		temp1_crit_alarm Chip temperature critical high alarm.

		power1_input Output power.
		power1_label "pout1"

MAINTAINERS

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		@@ -6539,6 +6539,13 @@ S: Maintained
		F: Documentation/hwmon/max16065
		F: drivers/hwmon/max16065.c

		MAX20751 HARDWARE MONITOR DRIVER
		M: Guenter Roeck <linux@roeck-us.net>
		L: lm-sensors@lm-sensors.org
		S: Maintained
		F: Documentation/hwmon/max20751
		F: drivers/hwmon/max20751.c

		MAX6650 HARDWARE MONITOR AND FAN CONTROLLER DRIVER
		M: "Hans J. Koch" <hjk@hansjkoch.de>
		L: lm-sensors@lm-sensors.org

drivers/hwmon/pmbus/Kconfig

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		@@ -73,6 +73,16 @@ config SENSORS_MAX16064
		This driver can also be built as a module. If so, the module will
		be called max16064.

		config SENSORS_MAX20751
		tristate "Maxim MAX20751"
		default n
		help
		If you say yes here you get hardware monitoring support for Maxim
		MAX20751.

		This driver can also be built as a module. If so, the module will
		be called max20751.

		config SENSORS_MAX34440
		tristate "Maxim MAX34440 and compatibles"
		default n

drivers/hwmon/pmbus/Makefile

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		@@ -8,6 +8,7 @@ obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
		obj-$(CONFIG_SENSORS_LM25066) += lm25066.o
		obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o
		obj-$(CONFIG_SENSORS_MAX16064) += max16064.o
		obj-$(CONFIG_SENSORS_MAX20751) += max20751.o
		obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
		obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
		obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o

drivers/hwmon/pmbus/max20751.c

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		/*
		* Hardware monitoring driver for Maxim MAX20751
		*
		* Copyright (c) 2015 Guenter Roeck
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/err.h>
		#include <linux/i2c.h>
		#include "pmbus.h"

		static struct pmbus_driver_info max20751_info = {
		.pages = 1,
		.format[PSC_VOLTAGE_IN] = linear,
		.format[PSC_VOLTAGE_OUT] = vid,
		.vrm_version = vr12,
		.format[PSC_TEMPERATURE] = linear,
		.format[PSC_CURRENT_OUT] = linear,
		.format[PSC_POWER] = linear,
		.func[0] = PMBUS_HAVE_VIN \| PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT \|
		PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT \|
		PMBUS_HAVE_TEMP \| PMBUS_HAVE_STATUS_TEMP \|
		PMBUS_HAVE_POUT,
		};

		static int max20751_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		return pmbus_do_probe(client, id, &max20751_info);
		}

		static const struct i2c_device_id max20751_id[] = {
		{"max20751", 0},
		{}
		};

		MODULE_DEVICE_TABLE(i2c, max20751_id);

		static struct i2c_driver max20751_driver = {
		.driver = {
		.name = "max20751",
		},
		.probe = max20751_probe,
		.remove = pmbus_do_remove,
		.id_table = max20751_id,
		};

		module_i2c_driver(max20751_driver);

		MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
		MODULE_DESCRIPTION("PMBus driver for Maxim MAX20751");
		MODULE_LICENSE("GPL");

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