LXR linux/drivers/hwmon/pmbus/ir38064.c

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