// 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 = 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);