1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Hardware monitoring driver for Infineon TDA38640 4 * 5 * Copyright (c) 2023 9elements GmbH 6 * 7 */ 8 9 #include <linux/err.h> 10 #include <linux/i2c.h> 11 #include <linux/init.h> 12 #include <linux/kernel.h> 13 #include <linux/module.h> 14 #include <linux/regulator/driver.h> 15 #include "pmbus.h" 16 17 static const struct regulator_desc __maybe_unused tda38640_reg_desc[] = { 18 PMBUS_REGULATOR("vout", 0), 19 }; 20 21 static struct pmbus_driver_info tda38640_info = { 22 .pages = 1, 23 .format[PSC_VOLTAGE_IN] = linear, 24 .format[PSC_VOLTAGE_OUT] = linear, 25 .format[PSC_CURRENT_OUT] = linear, 26 .format[PSC_CURRENT_IN] = linear, 27 .format[PSC_POWER] = linear, 28 .format[PSC_TEMPERATURE] = linear, 29 30 .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT 31 | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP 32 | PMBUS_HAVE_IIN 33 | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 34 | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT 35 | PMBUS_HAVE_POUT | PMBUS_HAVE_PIN, 36 #if IS_ENABLED(CONFIG_SENSORS_TDA38640_REGULATOR) 37 .num_regulators = 1, 38 .reg_desc = tda38640_reg_desc, 39 #endif 40 }; 41 42 static int tda38640_probe(struct i2c_client *client) 43 { 44 return pmbus_do_probe(client, &tda38640_info); 45 } 46 47 static const struct i2c_device_id tda38640_id[] = { 48 {"tda38640", 0}, 49 {} 50 }; 51 MODULE_DEVICE_TABLE(i2c, tda38640_id); 52 53 static const struct of_device_id __maybe_unused tda38640_of_match[] = { 54 { .compatible = "infineon,tda38640"}, 55 { }, 56 }; 57 MODULE_DEVICE_TABLE(of, tda38640_of_match); 58 59 /* This is the driver that will be inserted */ 60 static struct i2c_driver tda38640_driver = { 61 .driver = { 62 .name = "tda38640", 63 .of_match_table = of_match_ptr(tda38640_of_match), 64 }, 65 .probe_new = tda38640_probe, 66 .id_table = tda38640_id, 67 }; 68 69 module_i2c_driver(tda38640_driver); 70 71 MODULE_AUTHOR("Patrick Rudolph <patrick.rudolph@9elements.com>"); 72 MODULE_DESCRIPTION("PMBus driver for Infineon TDA38640"); 73 MODULE_LICENSE("GPL"); 74 MODULE_IMPORT_NS(PMBUS); 75