91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Hardware monitoring driver for Infineon IR38064
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*
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* Copyright (c) 2017 Google Inc
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*
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* VOUT_MODE is not supported by the device. The driver fakes VOUT linear16
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* mode with exponent value -8 as direct mode with m=256/b=0/R=0.
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*
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* The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however
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* this driver does not currently support them.
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/regulator/driver.h>
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#include "pmbus.h"
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#if IS_ENABLED(CONFIG_SENSORS_IR38064_REGULATOR)
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static const struct regulator_desc ir38064_reg_desc[] = {
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PMBUS_REGULATOR("vout", 0),
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};
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#endif /* CONFIG_SENSORS_IR38064_REGULATOR */
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static struct pmbus_driver_info ir38064_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_CURRENT_OUT] = linear,
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.format[PSC_POWER] = linear,
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.format[PSC_TEMPERATURE] = linear,
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.m[PSC_VOLTAGE_OUT] = 256,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = 0,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT
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| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
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| PMBUS_HAVE_POUT,
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#if IS_ENABLED(CONFIG_SENSORS_IR38064_REGULATOR)
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.num_regulators = 1,
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.reg_desc = ir38064_reg_desc,
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#endif
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};
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static int ir38064_probe(struct i2c_client *client)
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{
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return pmbus_do_probe(client, &ir38064_info);
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}
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static const struct i2c_device_id ir38064_id[] = {
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{"ir38060", 0},
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{"ir38064", 0},
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{"ir38164", 0},
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{"ir38263", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, ir38064_id);
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static const struct of_device_id __maybe_unused ir38064_of_match[] = {
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{ .compatible = "infineon,ir38060" },
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{ .compatible = "infineon,ir38064" },
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{ .compatible = "infineon,ir38164" },
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{ .compatible = "infineon,ir38263" },
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{}
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};
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MODULE_DEVICE_TABLE(of, ir38064_of_match);
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/* This is the driver that will be inserted */
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static struct i2c_driver ir38064_driver = {
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.driver = {
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.name = "ir38064",
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.of_match_table = of_match_ptr(ir38064_of_match),
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},
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.probe = ir38064_probe,
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.id_table = ir38064_id,
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};
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module_i2c_driver(ir38064_driver);
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MODULE_AUTHOR("Maxim Sloyko <maxims@google.com>");
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MODULE_DESCRIPTION("PMBus driver for Infineon IR38064 and compatible chips");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(PMBUS);
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