Commit d89d6c09 authored by Lakshmi Yadlapati's avatar Lakshmi Yadlapati Committed by Guenter Roeck
Browse files

hwmon: (pmbus/acbel-fsg032) Add Acbel power supply 



Add the driver to support ACBEL FSG032 power supply.

Signed-off-by: default avatarLakshmi Yadlapati <lakshmiy@us.ibm.com>
Link: https://lore.kernel.org/r/20230413132627.3444119-4-lakshmiy@us.ibm.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent b0cda2cc

drivers/hwmon/pmbus/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -27,6 +27,15 @@ config SENSORS_PMBUS 
	  This driver can also be built as a module. If so, the module will

	  be called pmbus.



config SENSORS_ACBEL_FSG032

	tristate "ACBEL FSG032 Power Supply"

	help

	  If you say yes here you get hardware monitoring support for the ACBEL

	  FSG032 Power Supply.



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

	  be called acbel-fsg032.



config SENSORS_ADM1266

	tristate "Analog Devices ADM1266 Sequencer"

	select CRC8

drivers/hwmon/pmbus/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 


obj-$(CONFIG_PMBUS)		+= pmbus_core.o

obj-$(CONFIG_SENSORS_PMBUS)	+= pmbus.o

obj-$(CONFIG_SENSORS_ACBEL_FSG032) += acbel-fsg032.o

obj-$(CONFIG_SENSORS_ADM1266)	+= adm1266.o

obj-$(CONFIG_SENSORS_ADM1275)	+= adm1275.o

obj-$(CONFIG_SENSORS_BEL_PFE)	+= bel-pfe.o

drivers/hwmon/pmbus/acbel-fsg032.c

0 → 100644
+85 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-or-later

/*

 * Copyright 2023 IBM Corp.

 */



#include <linux/device.h>

#include <linux/fs.h>

#include <linux/i2c.h>

#include <linux/module.h>

#include <linux/pmbus.h>

#include <linux/hwmon-sysfs.h>

#include "pmbus.h"



static const struct i2c_device_id acbel_fsg032_id[] = {

	{ "acbel_fsg032" },

	{}

};



static struct pmbus_driver_info acbel_fsg032_info = {

	.pages = 1,

	.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN |

		   PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT |

		   PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 |

		   PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_VOUT |

		   PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_TEMP |

		   PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_FAN12,

};



static int acbel_fsg032_probe(struct i2c_client *client)

{

	u8 buf[I2C_SMBUS_BLOCK_MAX + 1];

	struct device *dev = &client->dev;

	int rc;



	rc = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf);

	if (rc < 0) {

		dev_err(dev, "Failed to read PMBUS_MFR_ID\n");

		return rc;

	}

	if (strncmp(buf, "ACBEL", 5)) {

		buf[rc] = '\0';

		dev_err(dev, "Manufacturer '%s' not supported\n", buf);

		return -ENODEV;

	}



	rc = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);

	if (rc < 0) {

		dev_err(dev, "Failed to read PMBUS_MFR_MODEL\n");

		return rc;

	}



	if (strncmp(buf, "FSG032", 6)) {

		buf[rc] = '\0';

		dev_err(dev, "Model '%s' not supported\n", buf);

		return -ENODEV;

	}



	rc = pmbus_do_probe(client, &acbel_fsg032_info);

	if (rc)

		return rc;



	return 0;

}



static const struct of_device_id acbel_fsg032_of_match[] = {

	{ .compatible = "acbel,fsg032" },

	{}

};

MODULE_DEVICE_TABLE(of, acbel_fsg032_of_match);



static struct i2c_driver acbel_fsg032_driver = {

	.driver = {

		.name = "acbel-fsg032",

		.of_match_table = acbel_fsg032_of_match,

	},

	.probe_new = acbel_fsg032_probe,

	.id_table = acbel_fsg032_id,

};



module_i2c_driver(acbel_fsg032_driver);



MODULE_AUTHOR("Lakshmi Yadlapati");

MODULE_DESCRIPTION("PMBus driver for AcBel Power System power supplies");

MODULE_LICENSE("GPL");

MODULE_IMPORT_NS(PMBUS);