linux/drivers/hwmon/pmbus/tps40422.c
Zhu, Richard \(NSN - CN/Beijing\) a8bfeceb0c hwmon: (pmbus) Add tps40422 front-end driver
For TI power management chip TPS40422, READ_TEMPERATURE_2 command is supported on
page 1 of the chip, but the original driver(pmbus.c) only tried to detect this command
on page 0, this will lead to a result that the temperature sensor in page 1 couldn't
be detected. This change is to isolate the tps40422 driver from pmbus.c into a solo
front-end driver.

Signed-off-by: Zhu Laiwen <richard.zhu@nsn.com>
[Guenter Roeck: Dropped unnecessary license text (fixes checkpatch warning)]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-04 07:01:38 -07:00

65 lines
1.8 KiB
C

/*
* Hardware monitoring driver for TI TPS40422
*
* Copyright (c) 2014 Nokia Solutions and Networks.
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include "pmbus.h"
static struct pmbus_driver_info tps40422_info = {
.pages = 2,
.format[PSC_VOLTAGE_IN] = linear,
.format[PSC_VOLTAGE_OUT] = linear,
.format[PSC_TEMPERATURE] = linear,
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP2
| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP2
| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
};
static int tps40422_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
return pmbus_do_probe(client, id, &tps40422_info);
}
static const struct i2c_device_id tps40422_id[] = {
{"tps40422", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, tps40422_id);
/* This is the driver that will be inserted */
static struct i2c_driver tps40422_driver = {
.driver = {
.name = "tps40422",
},
.probe = tps40422_probe,
.remove = pmbus_do_remove,
.id_table = tps40422_id,
};
module_i2c_driver(tps40422_driver);
MODULE_AUTHOR("Zhu Laiwen <richard.zhu@nsn.com>");
MODULE_DESCRIPTION("PMBus driver for TI TPS40422");
MODULE_LICENSE("GPL");