hwmon: (pmbus) Add support for ADM1266 (9514a228) · Commits · 戴 / test

Documentation/hwmon/adm1266.rst

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		.. SPDX-License-Identifier: GPL-2.0

		Kernel driver adm1266
		=====================

		Supported chips:
		* Analog Devices ADM1266
		Prefix: 'adm1266'
		Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1266.pdf

		Author: Alexandru Tachici <alexandru.tachici@analog.com>


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

		This driver supports hardware monitoring for Analog Devices ADM1266 sequencer.

		ADM1266 is a sequencer that features voltage readback from 17 channels via an
		integrated 12 bit SAR ADC, accessed using a PMBus interface.

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


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

		The following attributes are supported. Limits are read-write, history reset
		attributes are write-only, all other attributes are read-only.

		inX_label "voutx"
		inX_input Measured voltage.
		inX_min Minimum Voltage.
		inX_max Maximum voltage.
		inX_min_alarm Voltage low alarm.
		inX_max_alarm Voltage high alarm.

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		@@ -30,6 +30,7 @@ Hardware Monitoring Kernel Drivers
		adm1026
		adm1031
		adm1177
		adm1266
		adm1275
		adm9240
		ads7828

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		@@ -26,6 +26,15 @@ config SENSORS_PMBUS
		This driver can also be built as a module. If so, the module will
		be called pmbus.

		config SENSORS_ADM1266
		tristate "Analog Devices ADM1266 Sequencer"
		help
		If you say yes here you get hardware monitoring support for Analog
		Devices ADM1266 Cascadable Super Sequencer.

		This driver can also be built as a module. If so, the module will
		be called adm1266.

		config SENSORS_ADM1275
		tristate "Analog Devices ADM1275 and compatibles"
		help

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		@@ -5,6 +5,7 @@

		obj-$(CONFIG_PMBUS) += pmbus_core.o
		obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
		obj-$(CONFIG_SENSORS_ADM1266) += adm1266.o
		obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
		obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o
		obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o

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		// SPDX-License-Identifier: GPL-2.0
		/*
		* ADM1266 - Cascadable Super Sequencer with Margin
		* Control and Fault Recording
		*
		* Copyright 2020 Analog Devices Inc.
		*/

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

		struct adm1266_data {
		struct pmbus_driver_info info;
		struct i2c_client *client;
		};

		static int adm1266_probe(struct i2c_client *client)
		{
		struct adm1266_data *data;
		int i;

		data = devm_kzalloc(&client->dev, sizeof(struct adm1266_data), GFP_KERNEL);
		if (!data)
		return -ENOMEM;

		data->client = client;
		data->info.pages = 17;
		data->info.format[PSC_VOLTAGE_OUT] = linear;
		for (i = 0; i < data->info.pages; i++)
		data->info.func[i] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT;

		return pmbus_do_probe(client, &data->info);
		}

		static const struct of_device_id adm1266_of_match[] = {
		{ .compatible = "adi,adm1266" },
		{ }
		};
		MODULE_DEVICE_TABLE(of, adm1266_of_match);

		static const struct i2c_device_id adm1266_id[] = {
		{ "adm1266", 0 },
		{ }
		};
		MODULE_DEVICE_TABLE(i2c, adm1266_id);

		static struct i2c_driver adm1266_driver = {
		.driver = {
		.name = "adm1266",
		.of_match_table = adm1266_of_match,
		},
		.probe_new = adm1266_probe,
		.remove = pmbus_do_remove,
		.id_table = adm1266_id,
		};

		module_i2c_driver(adm1266_driver);

		MODULE_AUTHOR("Alexandru Tachici <alexandru.tachici@analog.com>");
		MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1266");
		MODULE_LICENSE("GPL v2");