1*00669d19SMaxim Sloyko // SPDX-License-Identifier: GPL-2.0+ 2*00669d19SMaxim Sloyko /* 3*00669d19SMaxim Sloyko * Hardware monitoring driver for Infineon IR38064 4*00669d19SMaxim Sloyko * 5*00669d19SMaxim Sloyko * Copyright (c) 2017 Google Inc 6*00669d19SMaxim Sloyko * 7*00669d19SMaxim Sloyko * VOUT_MODE is not supported by the device. The driver fakes VOUT linear16 8*00669d19SMaxim Sloyko * mode with exponent value -8 as direct mode with m=256/b=0/R=0. 9*00669d19SMaxim Sloyko * 10*00669d19SMaxim Sloyko * The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however 11*00669d19SMaxim Sloyko * this driver does not currently support them. 12*00669d19SMaxim Sloyko */ 13*00669d19SMaxim Sloyko 14*00669d19SMaxim Sloyko #include <linux/err.h> 15*00669d19SMaxim Sloyko #include <linux/i2c.h> 16*00669d19SMaxim Sloyko #include <linux/init.h> 17*00669d19SMaxim Sloyko #include <linux/kernel.h> 18*00669d19SMaxim Sloyko #include <linux/module.h> 19*00669d19SMaxim Sloyko #include "pmbus.h" 20*00669d19SMaxim Sloyko 21*00669d19SMaxim Sloyko static struct pmbus_driver_info ir38064_info = { 22*00669d19SMaxim Sloyko .pages = 1, 23*00669d19SMaxim Sloyko .format[PSC_VOLTAGE_IN] = linear, 24*00669d19SMaxim Sloyko .format[PSC_VOLTAGE_OUT] = direct, 25*00669d19SMaxim Sloyko .format[PSC_CURRENT_OUT] = linear, 26*00669d19SMaxim Sloyko .format[PSC_POWER] = linear, 27*00669d19SMaxim Sloyko .format[PSC_TEMPERATURE] = linear, 28*00669d19SMaxim Sloyko .m[PSC_VOLTAGE_OUT] = 256, 29*00669d19SMaxim Sloyko .b[PSC_VOLTAGE_OUT] = 0, 30*00669d19SMaxim Sloyko .R[PSC_VOLTAGE_OUT] = 0, 31*00669d19SMaxim Sloyko .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT 32*00669d19SMaxim Sloyko | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP 33*00669d19SMaxim Sloyko | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT 34*00669d19SMaxim Sloyko | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT 35*00669d19SMaxim Sloyko | PMBUS_HAVE_POUT, 36*00669d19SMaxim Sloyko }; 37*00669d19SMaxim Sloyko 38*00669d19SMaxim Sloyko static int ir38064_probe(struct i2c_client *client, 39*00669d19SMaxim Sloyko const struct i2c_device_id *id) 40*00669d19SMaxim Sloyko { 41*00669d19SMaxim Sloyko return pmbus_do_probe(client, id, &ir38064_info); 42*00669d19SMaxim Sloyko } 43*00669d19SMaxim Sloyko 44*00669d19SMaxim Sloyko static const struct i2c_device_id ir38064_id[] = { 45*00669d19SMaxim Sloyko {"ir38064", 0}, 46*00669d19SMaxim Sloyko {} 47*00669d19SMaxim Sloyko }; 48*00669d19SMaxim Sloyko 49*00669d19SMaxim Sloyko MODULE_DEVICE_TABLE(i2c, ir38064_id); 50*00669d19SMaxim Sloyko 51*00669d19SMaxim Sloyko /* This is the driver that will be inserted */ 52*00669d19SMaxim Sloyko static struct i2c_driver ir38064_driver = { 53*00669d19SMaxim Sloyko .driver = { 54*00669d19SMaxim Sloyko .name = "ir38064", 55*00669d19SMaxim Sloyko }, 56*00669d19SMaxim Sloyko .probe = ir38064_probe, 57*00669d19SMaxim Sloyko .remove = pmbus_do_remove, 58*00669d19SMaxim Sloyko .id_table = ir38064_id, 59*00669d19SMaxim Sloyko }; 60*00669d19SMaxim Sloyko 61*00669d19SMaxim Sloyko module_i2c_driver(ir38064_driver); 62*00669d19SMaxim Sloyko 63*00669d19SMaxim Sloyko MODULE_AUTHOR("Maxim Sloyko <maxims@google.com>"); 64*00669d19SMaxim Sloyko MODULE_DESCRIPTION("PMBus driver for Infineon IR38064"); 65*00669d19SMaxim Sloyko MODULE_LICENSE("GPL"); 66