forked from Minki/linux
hwmon: (pmbus) Add support for Maxim MAX34440/MAX34441
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
This commit is contained in:
Guenter Roeck
parent
dcb7d0668b
commit
a3eeb45353
@ -789,6 +789,16 @@ config SENSORS_MAX16064
|
||||
This driver can also be built as a module. If so, the module will
|
||||
be called max16064.
|
||||
|
||||
config SENSORS_MAX34440
|
||||
tristate "Maxim MAX34440/MAX34441"
|
||||
default n
|
||||
help
|
||||
If you say yes here you get hardware monitoring support for Maxim
|
||||
MAX34440 and MAX34441.
|
||||
|
||||
This driver can also be built as a module. If so, the module will
|
||||
be called max34440.
|
||||
|
||||
config SENSORS_MAX8688
|
||||
tristate "Maxim MAX8688"
|
||||
default n
|
||||
|
||||
@ -118,6 +118,7 @@ obj-$(CONFIG_SENSORS_WM8350) += wm8350-hwmon.o
|
||||
obj-$(CONFIG_PMBUS) += pmbus_core.o
|
||||
obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
|
||||
obj-$(CONFIG_SENSORS_MAX16064) += max16064.o
|
||||
obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
|
||||
obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
|
||||
|
||||
ifeq ($(CONFIG_HWMON_DEBUG_CHIP),y)
|
||||
|
||||
199
drivers/hwmon/max34440.c
Normal file
199
drivers/hwmon/max34440.c
Normal file
@ -0,0 +1,199 @@
|
||||
/*
|
||||
* Hardware monitoring driver for Maxim MAX34440/MAX34441
|
||||
*
|
||||
* Copyright (c) 2011 Ericsson AB.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#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 };
|
||||
|
||||
#define MAX34440_STATUS_OC_WARN (1 << 0)
|
||||
#define MAX34440_STATUS_OC_FAULT (1 << 1)
|
||||
#define MAX34440_STATUS_OT_FAULT (1 << 5)
|
||||
#define MAX34440_STATUS_OT_WARN (1 << 6)
|
||||
|
||||
static int max34440_get_status(struct i2c_client *client, int page, int reg)
|
||||
{
|
||||
int ret;
|
||||
int mfg_status;
|
||||
|
||||
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 struct pmbus_driver_info max34440_info[] = {
|
||||
[max34440] = {
|
||||
.pages = 14,
|
||||
.direct[PSC_VOLTAGE_IN] = true,
|
||||
.direct[PSC_VOLTAGE_OUT] = true,
|
||||
.direct[PSC_TEMPERATURE] = true,
|
||||
.direct[PSC_CURRENT_OUT] = true,
|
||||
.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,
|
||||
.get_status = max34440_get_status,
|
||||
},
|
||||
[max34441] = {
|
||||
.pages = 12,
|
||||
.direct[PSC_VOLTAGE_IN] = true,
|
||||
.direct[PSC_VOLTAGE_OUT] = true,
|
||||
.direct[PSC_TEMPERATURE] = true,
|
||||
.direct[PSC_CURRENT_OUT] = true,
|
||||
.direct[PSC_FAN] = true,
|
||||
.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,
|
||||
.get_status = max34440_get_status,
|
||||
},
|
||||
};
|
||||
|
||||
static int max34440_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
return pmbus_do_probe(client, id, &max34440_info[id->driver_data]);
|
||||
}
|
||||
|
||||
static int max34440_remove(struct i2c_client *client)
|
||||
{
|
||||
return pmbus_do_remove(client);
|
||||
}
|
||||
|
||||
static const struct i2c_device_id max34440_id[] = {
|
||||
{"max34440", max34440},
|
||||
{"max34441", max34441},
|
||||
{}
|
||||
};
|
||||
|
||||
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 = max34440_remove,
|
||||
.id_table = max34440_id,
|
||||
};
|
||||
|
||||
static int __init max34440_init(void)
|
||||
{
|
||||
return i2c_add_driver(&max34440_driver);
|
||||
}
|
||||
|
||||
static void __exit max34440_exit(void)
|
||||
{
|
||||
i2c_del_driver(&max34440_driver);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Guenter Roeck");
|
||||
MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441");
|
||||
MODULE_LICENSE("GPL");
|
||||
module_init(max34440_init);
|
||||
module_exit(max34440_exit);
|
||||
Loading…
Reference in New Issue
Block a user