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00669d196c
Add the pmbus driver for the Infineon ir38064 voltage regulator. VOUT_MODE is not supported by the device. The driver fakes linear16 mode with exponent value -8. The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however this driver does not enable them. Signed-off-by: Maxim Sloyko <maxims@google.com> Signed-off-by: Patrick Venture <venture@google.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
66 lines
1.7 KiB
C
66 lines
1.7 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 "pmbus.h"
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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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};
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static int ir38064_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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return pmbus_do_probe(client, id, &ir38064_info);
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}
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static const struct i2c_device_id ir38064_id[] = {
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{"ir38064", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, ir38064_id);
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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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},
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.probe = ir38064_probe,
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.remove = pmbus_do_remove,
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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");
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MODULE_LICENSE("GPL");
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