// SPDX-License-Identifier: GPL-2.0+ /* * Hardware monitoring driver for TEXAS TPS546D24 buck converter */ #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" static struct pmbus_driver_info tps546d24_info = { .pages = 1, .format[PSC_VOLTAGE_IN] = linear, .format[PSC_VOLTAGE_OUT] = linear, .format[PSC_TEMPERATURE] = linear, .format[PSC_CURRENT_OUT] = linear, .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, }; static int tps546d24_probe(struct i2c_client *client) { int reg; reg = i2c_smbus_read_byte_data(client, PMBUS_VOUT_MODE); if (reg < 0) return reg; if (reg & 0x80) { int err; err = i2c_smbus_write_byte_data(client, PMBUS_VOUT_MODE, reg & 0x7f); if (err < 0) return err; } return pmbus_do_probe(client, &tps546d24_info); } static const struct i2c_device_id tps546d24_id[] = { {"tps546d24"}, {} }; MODULE_DEVICE_TABLE(i2c, tps546d24_id); static const struct of_device_id __maybe_unused tps546d24_of_match[] = { {.compatible = "ti,tps546d24"}, {} }; MODULE_DEVICE_TABLE(of, tps546d24_of_match); /* This is the driver that will be inserted */ static struct i2c_driver tps546d24_driver = { .driver = { .name = "tps546d24", .of_match_table = of_match_ptr(tps546d24_of_match), }, .probe = tps546d24_probe, .id_table = tps546d24_id, }; module_i2c_driver(tps546d24_driver); MODULE_AUTHOR("Duke Du <dukedu83@gmail.com>"); MODULE_DESCRIPTION("PMBus driver for TI tps546d24"); MODULE_LICENSE("GPL"); MODULE_IMPORT_NS(PMBUS);