3bce071a30
The only action currently performed in pmbus_do_remove() is removing the debugfs hierarchy. We can schedule a devm action at probe time and remove pmbus_do_remove() entirely from all pmbus drivers. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Link: https://lore.kernel.org/r/20201026105352.20359-1-brgl@bgdev.pl [groeck: Removed references to pmbus_do_remove from documentation] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Hardware monitoring driver for Maxim MAX16064
|
|
*
|
|
* Copyright (c) 2011 Ericsson AB.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/err.h>
|
|
#include <linux/i2c.h>
|
|
#include "pmbus.h"
|
|
|
|
#define MAX16064_MFR_VOUT_PEAK 0xd4
|
|
#define MAX16064_MFR_TEMPERATURE_PEAK 0xd6
|
|
|
|
static int max16064_read_word_data(struct i2c_client *client, int page,
|
|
int phase, int reg)
|
|
{
|
|
int ret;
|
|
|
|
switch (reg) {
|
|
case PMBUS_VIRT_READ_VOUT_MAX:
|
|
ret = pmbus_read_word_data(client, page, phase,
|
|
MAX16064_MFR_VOUT_PEAK);
|
|
break;
|
|
case PMBUS_VIRT_READ_TEMP_MAX:
|
|
ret = pmbus_read_word_data(client, page, phase,
|
|
MAX16064_MFR_TEMPERATURE_PEAK);
|
|
break;
|
|
case PMBUS_VIRT_RESET_VOUT_HISTORY:
|
|
case PMBUS_VIRT_RESET_TEMP_HISTORY:
|
|
ret = 0;
|
|
break;
|
|
default:
|
|
ret = -ENODATA;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int max16064_write_word_data(struct i2c_client *client, int page,
|
|
int reg, u16 word)
|
|
{
|
|
int ret;
|
|
|
|
switch (reg) {
|
|
case PMBUS_VIRT_RESET_VOUT_HISTORY:
|
|
ret = pmbus_write_word_data(client, page,
|
|
MAX16064_MFR_VOUT_PEAK, 0);
|
|
break;
|
|
case PMBUS_VIRT_RESET_TEMP_HISTORY:
|
|
ret = pmbus_write_word_data(client, page,
|
|
MAX16064_MFR_TEMPERATURE_PEAK,
|
|
0xffff);
|
|
break;
|
|
default:
|
|
ret = -ENODATA;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static struct pmbus_driver_info max16064_info = {
|
|
.pages = 4,
|
|
.format[PSC_VOLTAGE_IN] = direct,
|
|
.format[PSC_VOLTAGE_OUT] = direct,
|
|
.format[PSC_TEMPERATURE] = direct,
|
|
.m[PSC_VOLTAGE_IN] = 19995,
|
|
.b[PSC_VOLTAGE_IN] = 0,
|
|
.R[PSC_VOLTAGE_IN] = -1,
|
|
.m[PSC_VOLTAGE_OUT] = 19995,
|
|
.b[PSC_VOLTAGE_OUT] = 0,
|
|
.R[PSC_VOLTAGE_OUT] = -1,
|
|
.m[PSC_TEMPERATURE] = -7612,
|
|
.b[PSC_TEMPERATURE] = 335,
|
|
.R[PSC_TEMPERATURE] = -3,
|
|
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
|
|
| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
|
|
.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,
|
|
.read_word_data = max16064_read_word_data,
|
|
.write_word_data = max16064_write_word_data,
|
|
};
|
|
|
|
static int max16064_probe(struct i2c_client *client)
|
|
{
|
|
return pmbus_do_probe(client, &max16064_info);
|
|
}
|
|
|
|
static const struct i2c_device_id max16064_id[] = {
|
|
{"max16064", 0},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, max16064_id);
|
|
|
|
/* This is the driver that will be inserted */
|
|
static struct i2c_driver max16064_driver = {
|
|
.driver = {
|
|
.name = "max16064",
|
|
},
|
|
.probe_new = max16064_probe,
|
|
.id_table = max16064_id,
|
|
};
|
|
|
|
module_i2c_driver(max16064_driver);
|
|
|
|
MODULE_AUTHOR("Guenter Roeck");
|
|
MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
|
|
MODULE_LICENSE("GPL");
|