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linux_dsm_epyc7002/drivers/hwmon/pmbus/max34440.c
Thomas Gleixner 74ba9207e1 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  675 mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:45 +02:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Hardware monitoring driver for Maxim MAX34440/MAX34441
*
* Copyright (c) 2011 Ericsson AB.
* Copyright (c) 2012 Guenter Roeck
*/
#include <linux/bitops.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include "pmbus.h"
enum chips { max34440, max34441, max34446, max34451, max34460, max34461 };
#define MAX34440_MFR_VOUT_PEAK 0xd4
#define MAX34440_MFR_IOUT_PEAK 0xd5
#define MAX34440_MFR_TEMPERATURE_PEAK 0xd6
#define MAX34440_MFR_VOUT_MIN 0xd7
#define MAX34446_MFR_POUT_PEAK 0xe0
#define MAX34446_MFR_POUT_AVG 0xe1
#define MAX34446_MFR_IOUT_AVG 0xe2
#define MAX34446_MFR_TEMPERATURE_AVG 0xe3
#define MAX34440_STATUS_OC_WARN BIT(0)
#define MAX34440_STATUS_OC_FAULT BIT(1)
#define MAX34440_STATUS_OT_FAULT BIT(5)
#define MAX34440_STATUS_OT_WARN BIT(6)
#define MAX34451_MFR_CHANNEL_CONFIG 0xe4
#define MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK 0x3f
struct max34440_data {
int id;
struct pmbus_driver_info info;
};
#define to_max34440_data(x) container_of(x, struct max34440_data, info)
static int max34440_read_word_data(struct i2c_client *client, int page, int reg)
{
int ret;
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
const struct max34440_data *data = to_max34440_data(info);
switch (reg) {
case PMBUS_VIRT_READ_VOUT_MIN:
ret = pmbus_read_word_data(client, page,
MAX34440_MFR_VOUT_MIN);
break;
case PMBUS_VIRT_READ_VOUT_MAX:
ret = pmbus_read_word_data(client, page,
MAX34440_MFR_VOUT_PEAK);
break;
case PMBUS_VIRT_READ_IOUT_AVG:
if (data->id != max34446 && data->id != max34451)
return -ENXIO;
ret = pmbus_read_word_data(client, page,
MAX34446_MFR_IOUT_AVG);
break;
case PMBUS_VIRT_READ_IOUT_MAX:
ret = pmbus_read_word_data(client, page,
MAX34440_MFR_IOUT_PEAK);
break;
case PMBUS_VIRT_READ_POUT_AVG:
if (data->id != max34446)
return -ENXIO;
ret = pmbus_read_word_data(client, page,
MAX34446_MFR_POUT_AVG);
break;
case PMBUS_VIRT_READ_POUT_MAX:
if (data->id != max34446)
return -ENXIO;
ret = pmbus_read_word_data(client, page,
MAX34446_MFR_POUT_PEAK);
break;
case PMBUS_VIRT_READ_TEMP_AVG:
if (data->id != max34446 && data->id != max34460 &&
data->id != max34461)
return -ENXIO;
ret = pmbus_read_word_data(client, page,
MAX34446_MFR_TEMPERATURE_AVG);
break;
case PMBUS_VIRT_READ_TEMP_MAX:
ret = pmbus_read_word_data(client, page,
MAX34440_MFR_TEMPERATURE_PEAK);
break;
case PMBUS_VIRT_RESET_POUT_HISTORY:
if (data->id != max34446)
return -ENXIO;
ret = 0;
break;
case PMBUS_VIRT_RESET_VOUT_HISTORY:
case PMBUS_VIRT_RESET_IOUT_HISTORY:
case PMBUS_VIRT_RESET_TEMP_HISTORY:
ret = 0;
break;
default:
ret = -ENODATA;
break;
}
return ret;
}
static int max34440_write_word_data(struct i2c_client *client, int page,
int reg, u16 word)
{
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
const struct max34440_data *data = to_max34440_data(info);
int ret;
switch (reg) {
case PMBUS_VIRT_RESET_POUT_HISTORY:
ret = pmbus_write_word_data(client, page,
MAX34446_MFR_POUT_PEAK, 0);
if (ret)
break;
ret = pmbus_write_word_data(client, page,
MAX34446_MFR_POUT_AVG, 0);
break;
case PMBUS_VIRT_RESET_VOUT_HISTORY:
ret = pmbus_write_word_data(client, page,
MAX34440_MFR_VOUT_MIN, 0x7fff);
if (ret)
break;
ret = pmbus_write_word_data(client, page,
MAX34440_MFR_VOUT_PEAK, 0);
break;
case PMBUS_VIRT_RESET_IOUT_HISTORY:
ret = pmbus_write_word_data(client, page,
MAX34440_MFR_IOUT_PEAK, 0);
if (!ret && (data->id == max34446 || data->id == max34451))
ret = pmbus_write_word_data(client, page,
MAX34446_MFR_IOUT_AVG, 0);
break;
case PMBUS_VIRT_RESET_TEMP_HISTORY:
ret = pmbus_write_word_data(client, page,
MAX34440_MFR_TEMPERATURE_PEAK,
0x8000);
if (!ret && data->id == max34446)
ret = pmbus_write_word_data(client, page,
MAX34446_MFR_TEMPERATURE_AVG, 0);
break;
default:
ret = -ENODATA;
break;
}
return ret;
}
static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
{
int ret = 0;
int mfg_status;
if (page >= 0) {
ret = pmbus_set_page(client, page);
if (ret < 0)
return ret;
}
switch (reg) {
case PMBUS_STATUS_IOUT:
mfg_status = pmbus_read_word_data(client, 0,
PMBUS_STATUS_MFR_SPECIFIC);
if (mfg_status < 0)
return mfg_status;
if (mfg_status & MAX34440_STATUS_OC_WARN)
ret |= PB_IOUT_OC_WARNING;
if (mfg_status & MAX34440_STATUS_OC_FAULT)
ret |= PB_IOUT_OC_FAULT;
break;
case PMBUS_STATUS_TEMPERATURE:
mfg_status = pmbus_read_word_data(client, 0,
PMBUS_STATUS_MFR_SPECIFIC);
if (mfg_status < 0)
return mfg_status;
if (mfg_status & MAX34440_STATUS_OT_WARN)
ret |= PB_TEMP_OT_WARNING;
if (mfg_status & MAX34440_STATUS_OT_FAULT)
ret |= PB_TEMP_OT_FAULT;
break;
default:
ret = -ENODATA;
break;
}
return ret;
}
static int max34451_set_supported_funcs(struct i2c_client *client,
struct max34440_data *data)
{
/*
* Each of the channel 0-15 can be configured to monitor the following
* functions based on MFR_CHANNEL_CONFIG[5:0]
* 0x10: Sequencing + voltage monitoring (only valid for PAGES 0–11)
* 0x20: Voltage monitoring (no sequencing)
* 0x21: Voltage read only
* 0x22: Current monitoring
* 0x23: Current read only
* 0x30: General-purpose input active low
* 0x34: General-purpose input active high
* 0x00: Disabled
*/
int page, rv;
for (page = 0; page < 16; page++) {
rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page);
if (rv < 0)
return rv;
rv = i2c_smbus_read_word_data(client,
MAX34451_MFR_CHANNEL_CONFIG);
if (rv < 0)
return rv;
switch (rv & MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK) {
case 0x10:
case 0x20:
data->info.func[page] = PMBUS_HAVE_VOUT |
PMBUS_HAVE_STATUS_VOUT;
break;
case 0x21:
data->info.func[page] = PMBUS_HAVE_VOUT;
break;
case 0x22:
data->info.func[page] = PMBUS_HAVE_IOUT |
PMBUS_HAVE_STATUS_IOUT;
break;
case 0x23:
data->info.func[page] = PMBUS_HAVE_IOUT;
break;
default:
break;
}
}
return 0;
}
static struct pmbus_driver_info max34440_info[] = {
[max34440] = {
.pages = 14,
.format[PSC_VOLTAGE_IN] = direct,
.format[PSC_VOLTAGE_OUT] = direct,
.format[PSC_TEMPERATURE] = direct,
.format[PSC_CURRENT_OUT] = direct,
.m[PSC_VOLTAGE_IN] = 1,
.b[PSC_VOLTAGE_IN] = 0,
.R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */
.m[PSC_VOLTAGE_OUT] = 1,
.b[PSC_VOLTAGE_OUT] = 0,
.R[PSC_VOLTAGE_OUT] = 3, /* R = 0 in datasheet reflects mV */
.m[PSC_CURRENT_OUT] = 1,
.b[PSC_CURRENT_OUT] = 0,
.R[PSC_CURRENT_OUT] = 3, /* R = 0 in datasheet reflects mA */
.m[PSC_TEMPERATURE] = 1,
.b[PSC_TEMPERATURE] = 0,
.R[PSC_TEMPERATURE] = 2,
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.read_byte_data = max34440_read_byte_data,
.read_word_data = max34440_read_word_data,
.write_word_data = max34440_write_word_data,
},
[max34441] = {
.pages = 12,
.format[PSC_VOLTAGE_IN] = direct,
.format[PSC_VOLTAGE_OUT] = direct,
.format[PSC_TEMPERATURE] = direct,
.format[PSC_CURRENT_OUT] = direct,
.format[PSC_FAN] = direct,
.m[PSC_VOLTAGE_IN] = 1,
.b[PSC_VOLTAGE_IN] = 0,
.R[PSC_VOLTAGE_IN] = 3,
.m[PSC_VOLTAGE_OUT] = 1,
.b[PSC_VOLTAGE_OUT] = 0,
.R[PSC_VOLTAGE_OUT] = 3,
.m[PSC_CURRENT_OUT] = 1,
.b[PSC_CURRENT_OUT] = 0,
.R[PSC_CURRENT_OUT] = 3,
.m[PSC_TEMPERATURE] = 1,
.b[PSC_TEMPERATURE] = 0,
.R[PSC_TEMPERATURE] = 2,
.m[PSC_FAN] = 1,
.b[PSC_FAN] = 0,
.R[PSC_FAN] = 0,
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.read_byte_data = max34440_read_byte_data,
.read_word_data = max34440_read_word_data,
.write_word_data = max34440_write_word_data,
},
[max34446] = {
.pages = 7,
.format[PSC_VOLTAGE_IN] = direct,
.format[PSC_VOLTAGE_OUT] = direct,
.format[PSC_TEMPERATURE] = direct,
.format[PSC_CURRENT_OUT] = direct,
.format[PSC_POWER] = direct,
.m[PSC_VOLTAGE_IN] = 1,
.b[PSC_VOLTAGE_IN] = 0,
.R[PSC_VOLTAGE_IN] = 3,
.m[PSC_VOLTAGE_OUT] = 1,
.b[PSC_VOLTAGE_OUT] = 0,
.R[PSC_VOLTAGE_OUT] = 3,
.m[PSC_CURRENT_OUT] = 1,
.b[PSC_CURRENT_OUT] = 0,
.R[PSC_CURRENT_OUT] = 3,
.m[PSC_POWER] = 1,
.b[PSC_POWER] = 0,
.R[PSC_POWER] = 3,
.m[PSC_TEMPERATURE] = 1,
.b[PSC_TEMPERATURE] = 0,
.R[PSC_TEMPERATURE] = 2,
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[4] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[5] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.read_byte_data = max34440_read_byte_data,
.read_word_data = max34440_read_word_data,
.write_word_data = max34440_write_word_data,
},
[max34451] = {
.pages = 21,
.format[PSC_VOLTAGE_OUT] = direct,
.format[PSC_TEMPERATURE] = direct,
.format[PSC_CURRENT_OUT] = direct,
.m[PSC_VOLTAGE_OUT] = 1,
.b[PSC_VOLTAGE_OUT] = 0,
.R[PSC_VOLTAGE_OUT] = 3,
.m[PSC_CURRENT_OUT] = 1,
.b[PSC_CURRENT_OUT] = 0,
.R[PSC_CURRENT_OUT] = 2,
.m[PSC_TEMPERATURE] = 1,
.b[PSC_TEMPERATURE] = 0,
.R[PSC_TEMPERATURE] = 2,
/* func 0-15 is set dynamically before probing */
.func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.read_byte_data = max34440_read_byte_data,
.read_word_data = max34440_read_word_data,
.write_word_data = max34440_write_word_data,
},
[max34460] = {
.pages = 18,
.format[PSC_VOLTAGE_OUT] = direct,
.format[PSC_TEMPERATURE] = direct,
.m[PSC_VOLTAGE_OUT] = 1,
.b[PSC_VOLTAGE_OUT] = 0,
.R[PSC_VOLTAGE_OUT] = 3,
.m[PSC_TEMPERATURE] = 1,
.b[PSC_TEMPERATURE] = 0,
.R[PSC_TEMPERATURE] = 2,
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[14] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[15] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.read_byte_data = max34440_read_byte_data,
.read_word_data = max34440_read_word_data,
.write_word_data = max34440_write_word_data,
},
[max34461] = {
.pages = 23,
.format[PSC_VOLTAGE_OUT] = direct,
.format[PSC_TEMPERATURE] = direct,
.m[PSC_VOLTAGE_OUT] = 1,
.b[PSC_VOLTAGE_OUT] = 0,
.R[PSC_VOLTAGE_OUT] = 3,
.m[PSC_TEMPERATURE] = 1,
.b[PSC_TEMPERATURE] = 0,
.R[PSC_TEMPERATURE] = 2,
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[12] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[13] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[14] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
.func[15] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
/* page 16 is reserved */
.func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.func[21] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.read_byte_data = max34440_read_byte_data,
.read_word_data = max34440_read_word_data,
.write_word_data = max34440_write_word_data,
},
};
static int max34440_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct max34440_data *data;
int rv;
data = devm_kzalloc(&client->dev, sizeof(struct max34440_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
data->id = id->driver_data;
data->info = max34440_info[id->driver_data];
if (data->id == max34451) {
rv = max34451_set_supported_funcs(client, data);
if (rv)
return rv;
}
return pmbus_do_probe(client, id, &data->info);
}
static const struct i2c_device_id max34440_id[] = {
{"max34440", max34440},
{"max34441", max34441},
{"max34446", max34446},
{"max34451", max34451},
{"max34460", max34460},
{"max34461", max34461},
{}
};
MODULE_DEVICE_TABLE(i2c, max34440_id);
/* This is the driver that will be inserted */
static struct i2c_driver max34440_driver = {
.driver = {
.name = "max34440",
},
.probe = max34440_probe,
.remove = pmbus_do_remove,
.id_table = max34440_id,
};
module_i2c_driver(max34440_driver);
MODULE_AUTHOR("Guenter Roeck");
MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441");
MODULE_LICENSE("GPL");
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