1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Driver for MPS MP5023 Hot-Swap Controller 4 */ 5 6 #include <linux/i2c.h> 7 #include <linux/module.h> 8 #include <linux/of.h> 9 #include "pmbus.h" 10 11 static struct pmbus_driver_info mp5023_info = { 12 .pages = 1, 13 14 .format[PSC_VOLTAGE_IN] = direct, 15 .format[PSC_VOLTAGE_OUT] = direct, 16 .format[PSC_CURRENT_OUT] = direct, 17 .format[PSC_POWER] = direct, 18 .format[PSC_TEMPERATURE] = direct, 19 20 .m[PSC_VOLTAGE_IN] = 32, 21 .b[PSC_VOLTAGE_IN] = 0, 22 .R[PSC_VOLTAGE_IN] = 0, 23 .m[PSC_VOLTAGE_OUT] = 32, 24 .b[PSC_VOLTAGE_OUT] = 0, 25 .R[PSC_VOLTAGE_OUT] = 0, 26 .m[PSC_CURRENT_OUT] = 16, 27 .b[PSC_CURRENT_OUT] = 0, 28 .R[PSC_CURRENT_OUT] = 0, 29 .m[PSC_POWER] = 1, 30 .b[PSC_POWER] = 0, 31 .R[PSC_POWER] = 0, 32 .m[PSC_TEMPERATURE] = 2, 33 .b[PSC_TEMPERATURE] = 0, 34 .R[PSC_TEMPERATURE] = 0, 35 36 .func[0] = 37 PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN | 38 PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT | 39 PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP, 40 }; 41 42 static int mp5023_probe(struct i2c_client *client) 43 { 44 return pmbus_do_probe(client, &mp5023_info); 45 } 46 47 static const struct of_device_id __maybe_unused mp5023_of_match[] = { 48 { .compatible = "mps,mp5023", }, 49 {} 50 }; 51 52 MODULE_DEVICE_TABLE(of, mp5023_of_match); 53 54 static struct i2c_driver mp5023_driver = { 55 .driver = { 56 .name = "mp5023", 57 .of_match_table = of_match_ptr(mp5023_of_match), 58 }, 59 .probe = mp5023_probe, 60 }; 61 62 module_i2c_driver(mp5023_driver); 63 64 MODULE_AUTHOR("Howard Chiu <howard.chiu@quantatw.com>"); 65 MODULE_DESCRIPTION("PMBus driver for MPS MP5023 HSC"); 66 MODULE_LICENSE("GPL"); 67 MODULE_IMPORT_NS(PMBUS); 68