cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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irps5401.c (1768B)

      1// SPDX-License-Identifier: GPL-2.0+
      2/*
      3 * Hardware monitoring driver for the Infineon IRPS5401M PMIC.
      4 *
      5 * Copyright (c) 2019 SED Systems, a division of Calian Ltd.
      6 *
      7 * The device supports VOUT_PEAK, IOUT_PEAK, and TEMPERATURE_PEAK, however
      8 * this driver does not currently support them.
      9 */
     10
     11#include <linux/err.h>
     12#include <linux/i2c.h>
     13#include <linux/init.h>
     14#include <linux/kernel.h>
     15#include <linux/module.h>
     16#include "pmbus.h"
     17
     18#define IRPS5401_SW_FUNC (PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | \
     19			  PMBUS_HAVE_STATUS_INPUT | \
     20			  PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | \
     21			  PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | \
     22			  PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | \
     23			  PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP)
     24
     25#define IRPS5401_LDO_FUNC (PMBUS_HAVE_VIN | \
     26			   PMBUS_HAVE_STATUS_INPUT | \
     27			   PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | \
     28			   PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | \
     29			   PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | \
     30			   PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP)
     31
     32static struct pmbus_driver_info irps5401_info = {
     33	.pages = 5,
     34	.func[0] = IRPS5401_SW_FUNC,
     35	.func[1] = IRPS5401_SW_FUNC,
     36	.func[2] = IRPS5401_SW_FUNC,
     37	.func[3] = IRPS5401_SW_FUNC,
     38	.func[4] = IRPS5401_LDO_FUNC,
     39};
     40
     41static int irps5401_probe(struct i2c_client *client)
     42{
     43	return pmbus_do_probe(client, &irps5401_info);
     44}
     45
     46static const struct i2c_device_id irps5401_id[] = {
     47	{"irps5401", 0},
     48	{}
     49};
     50
     51MODULE_DEVICE_TABLE(i2c, irps5401_id);
     52
     53static struct i2c_driver irps5401_driver = {
     54	.driver = {
     55		   .name = "irps5401",
     56		   },
     57	.probe_new = irps5401_probe,
     58	.id_table = irps5401_id,
     59};
     60
     61module_i2c_driver(irps5401_driver);
     62
     63MODULE_AUTHOR("Robert Hancock");
     64MODULE_DESCRIPTION("PMBus driver for Infineon IRPS5401");
     65MODULE_LICENSE("GPL");
     66MODULE_IMPORT_NS(PMBUS);