hwmon: (pmbus) add driver for BEL PFE1100 and PFE3000 (626bb2f3) · Commits · 戴 / test

drivers/hwmon/pmbus/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -36,6 +36,15 @@ config SENSORS_ADM1275
		This driver can also be built as a module. If so, the module will
		be called adm1275.

		config SENSORS_BEL_PFE
		tristate "Bel PFE Compatible Power Supplies"
		help
		If you say yes here you get hardware monitoring support for BEL
		PFE1100 and PFE3000 Power Supplies.

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

		config SENSORS_IBM_CFFPS
		tristate "IBM Common Form Factor Power Supply"
		depends on LEDS_CLASS

drivers/hwmon/pmbus/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -6,6 +6,7 @@
		obj-$(CONFIG_PMBUS) += pmbus_core.o
		obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
		obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
		obj-$(CONFIG_SENSORS_BEL_PFE) += bel-pfe.o
		obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o
		obj-$(CONFIG_SENSORS_INSPUR_IPSPS) += inspur-ipsps.o
		obj-$(CONFIG_SENSORS_IR35221) += ir35221.o

drivers/hwmon/pmbus/bel-pfe.c

0 → 100644

+131 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0+
		/*
		* Hardware monitoring driver for BEL PFE family power supplies.
		*
		* Copyright (c) 2019 Facebook Inc.
		*/

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

		#include "pmbus.h"

		enum chips {pfe1100, pfe3000};

		/*
		* Disable status check for pfe3000 devices, because some devices report
		* communication error (invalid command) for VOUT_MODE command (0x20)
		* although correct VOUT_MODE (0x16) is returned: it leads to incorrect
		* exponent in linear mode.
		*/
		static struct pmbus_platform_data pfe3000_plat_data = {
		.flags = PMBUS_SKIP_STATUS_CHECK,
		};

		static struct pmbus_driver_info pfe_driver_info[] = {
		[pfe1100] = {
		.pages = 1,
		.format[PSC_VOLTAGE_IN] = linear,
		.format[PSC_VOLTAGE_OUT] = linear,
		.format[PSC_CURRENT_IN] = linear,
		.format[PSC_CURRENT_OUT] = linear,
		.format[PSC_POWER] = linear,
		.format[PSC_TEMPERATURE] = linear,
		.format[PSC_FAN] = linear,

		.func[0] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT \|
		PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT \|
		PMBUS_HAVE_POUT \|
		PMBUS_HAVE_VIN \| PMBUS_HAVE_IIN \|
		PMBUS_HAVE_PIN \| PMBUS_HAVE_STATUS_INPUT \|
		PMBUS_HAVE_TEMP \| PMBUS_HAVE_TEMP2 \|
		PMBUS_HAVE_STATUS_TEMP \|
		PMBUS_HAVE_FAN12,
		},

		[pfe3000] = {
		.pages = 7,
		.format[PSC_VOLTAGE_IN] = linear,
		.format[PSC_VOLTAGE_OUT] = linear,
		.format[PSC_CURRENT_IN] = linear,
		.format[PSC_CURRENT_OUT] = linear,
		.format[PSC_POWER] = linear,
		.format[PSC_TEMPERATURE] = linear,
		.format[PSC_FAN] = linear,

		/* Page 0: V1. */
		.func[0] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT \|
		PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT \|
		PMBUS_HAVE_POUT \| PMBUS_HAVE_FAN12 \|
		PMBUS_HAVE_VIN \| PMBUS_HAVE_IIN \|
		PMBUS_HAVE_PIN \| PMBUS_HAVE_STATUS_INPUT \|
		PMBUS_HAVE_TEMP \| PMBUS_HAVE_TEMP2 \|
		PMBUS_HAVE_TEMP3 \| PMBUS_HAVE_STATUS_TEMP \|
		PMBUS_HAVE_VCAP,

		/* Page 1: Vsb. */
		.func[1] = PMBUS_HAVE_VOUT \| PMBUS_HAVE_STATUS_VOUT \|
		PMBUS_HAVE_IOUT \| PMBUS_HAVE_STATUS_IOUT \|
		PMBUS_HAVE_PIN \| PMBUS_HAVE_STATUS_INPUT \|
		PMBUS_HAVE_POUT,

		/*
		* Page 2: V1 Ishare.
		* Page 3: Reserved.
		* Page 4: V1 Cathode.
		* Page 5: Vsb Cathode.
		* Page 6: V1 Sense.
		*/
		.func[2] = PMBUS_HAVE_VOUT,
		.func[4] = PMBUS_HAVE_VOUT,
		.func[5] = PMBUS_HAVE_VOUT,
		.func[6] = PMBUS_HAVE_VOUT,
		},
		};

		static int pfe_pmbus_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		int model;

		model = (int)id->driver_data;

		/*
		* PFE3000-12-069RA devices may not stay in page 0 during device
		* probe which leads to probe failure (read status word failed).
		* So let's set the device to page 0 at the beginning.
		*/
		if (model == pfe3000) {
		client->dev.platform_data = &pfe3000_plat_data;
		i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
		}

		return pmbus_do_probe(client, id, &pfe_driver_info[model]);
		}

		static const struct i2c_device_id pfe_device_id[] = {
		{"pfe1100", pfe1100},
		{"pfe3000", pfe3000},
		{}
		};

		MODULE_DEVICE_TABLE(i2c, pfe_device_id);

		static struct i2c_driver pfe_pmbus_driver = {
		.driver = {
		.name = "bel-pfe",
		},
		.probe = pfe_pmbus_probe,
		.remove = pmbus_do_remove,
		.id_table = pfe_device_id,
		};

		module_i2c_driver(pfe_pmbus_driver);

		MODULE_AUTHOR("Tao Ren <rentao.bupt@gmail.com>");
		MODULE_DESCRIPTION("PMBus driver for BEL PFE Family Power Supplies");
		MODULE_LICENSE("GPL");

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