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hwmon: Add driver for FTS BMC chip "Teutates"

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This driver implements hardware monitoring and watchdog support
for the FTS BMC Chip "Teutates".

Signed-off-by: Thilo Cestonaro <thilo@cestona.ro>
[groeck: Updated subject and description; fixed dependencies]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Thilo Cestonaro 2016-07-18 13:51:29 +02:00 committed by Guenter Roeck
parent 50c22cd154
commit 08426eda58
4 changed files with 856 additions and 0 deletions
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23
Documentation/hwmon/ftsteutates Normal file
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@ -0,0 +1,23 @@
Kernel driver ftsteutates
=====================
Supported chips:
* FTS Teutates
Prefix: 'ftsteutates'
Addresses scanned: I2C 0x73 (7-Bit)
Author: Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com>
Description
-----------
The BMC Teutates is the Eleventh generation of Superior System
monitoring and thermal management solution. It is builds on the basic
functionality of the BMC Theseus and contains several new features and
enhancements. It can monitor up to 4 voltages, 16 temperatures and
8 fans. It also contains an integrated watchdog which is currently
implemented in this driver.
Specification of the chip can be found here:
ftp:///pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
ftp:///pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf

12
drivers/hwmon/Kconfig
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@ -486,6 +486,18 @@ config SENSORS_FSCHMD
This driver can also be built as a module. If so, the module
will be called fschmd.
config SENSORS_FTSTEUTATES
tristate "Fujitsu Technology Solutions sensor chip Teutates"
depends on I2C && WATCHDOG
select WATCHDOG_CORE
help
If you say yes here you get support for the Fujitsu Technology
Solutions (FTS) sensor chip "Teutates" including support for
the integrated watchdog.
This driver can also be built as a module. If so, the module
will be called ftsteutates.
config SENSORS_GL518SM
tristate "Genesys Logic GL518SM"
depends on I2C

1
drivers/hwmon/Makefile
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@ -62,6 +62,7 @@ obj-$(CONFIG_SENSORS_F71882FG) += f71882fg.o
obj-$(CONFIG_SENSORS_F75375S) += f75375s.o
obj-$(CONFIG_SENSORS_FAM15H_POWER) += fam15h_power.o
obj-$(CONFIG_SENSORS_FSCHMD) += fschmd.o
obj-$(CONFIG_SENSORS_FTSTEUTATES) += ftsteutates.o
obj-$(CONFIG_SENSORS_G760A) += g760a.o
obj-$(CONFIG_SENSORS_G762) += g762.o
obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o

820
drivers/hwmon/ftsteutates.c Normal file
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@ -0,0 +1,820 @@
/*
* Support for the FTS Systemmonitoring Chip "Teutates"
*
* Copyright (C) 2016 Fujitsu Technology Solutions GmbH,
* Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com>
*
* 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/err.h>
#include <linux/fs.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/uaccess.h>
#include <linux/version.h>
#include <linux/watchdog.h>
#define FTS_DEVICE_ID_REG 0x0000
#define FTS_DEVICE_REVISION_REG 0x0001
#define FTS_DEVICE_STATUS_REG 0x0004
#define FTS_SATELLITE_STATUS_REG 0x0005
#define FTS_EVENT_STATUS_REG 0x0006
#define FTS_GLOBAL_CONTROL_REG 0x0007
#define FTS_SENSOR_EVENT_REG 0x0010
#define FTS_FAN_EVENT_REG 0x0014
#define FTS_FAN_PRESENT_REG 0x0015
#define FTS_POWER_ON_TIME_COUNTER_A 0x007A
#define FTS_POWER_ON_TIME_COUNTER_B 0x007B
#define FTS_POWER_ON_TIME_COUNTER_C 0x007C
#define FTS_PAGE_SELECT_REG 0x007F
#define FTS_WATCHDOG_TIME_PRESET 0x000B
#define FTS_WATCHDOG_CONTROL 0x5081
#define FTS_NO_FAN_SENSORS 0x08
#define FTS_NO_TEMP_SENSORS 0x10
#define FTS_NO_VOLT_SENSORS 0x04
static struct i2c_device_id fts_id[] = {
{ "ftsteutates", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, fts_id);
enum WATCHDOG_RESOLUTION {
seconds = 1,
minutes = 60
};
struct fts_data {
struct i2c_client *client;
/* update sensor data lock */
struct mutex update_lock;
/* read/write register lock */
struct mutex access_lock;
unsigned long last_updated; /* in jiffies */
struct watchdog_device wdd;
enum WATCHDOG_RESOLUTION resolution;
bool valid; /* false until following fields are valid */
u8 volt[FTS_NO_VOLT_SENSORS];
u8 temp_input[FTS_NO_TEMP_SENSORS];
u8 temp_alarm;
u8 fan_present;
u8 fan_input[FTS_NO_FAN_SENSORS]; /* in rps */
u8 fan_source[FTS_NO_FAN_SENSORS];
u8 fan_alarm;
};
#define FTS_REG_FAN_INPUT(idx) ((idx) + 0x20)
#define FTS_REG_FAN_SOURCE(idx) ((idx) + 0x30)
#define FTS_REG_FAN_CONTROL(idx) (((idx) << 16) + 0x4881)
#define FTS_REG_TEMP_INPUT(idx) ((idx) + 0x40)
#define FTS_REG_TEMP_CONTROL(idx) (((idx) << 16) + 0x0681)
#define FTS_REG_VOLT(idx) ((idx) + 0x18)
/*****************************************************************************/
/* I2C Helper functions */
/*****************************************************************************/
static int fts_read_byte(struct i2c_client *client, unsigned short reg)
{
int ret;
unsigned char page = reg >> 8;
struct fts_data *data = dev_get_drvdata(&client->dev);
mutex_lock(&data->access_lock);
dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page);
ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page);
if (ret < 0)
goto error;
reg &= 0xFF;
ret = i2c_smbus_read_byte_data(client, reg);
dev_dbg(&client->dev, "read - reg: 0x%.02x: val: 0x%.02x\n", reg, ret);
error:
mutex_unlock(&data->access_lock);
return ret;
}
static int fts_write_byte(struct i2c_client *client, unsigned short reg,
unsigned char value)
{
int ret;
unsigned char page = reg >> 8;
struct fts_data *data = dev_get_drvdata(&client->dev);
mutex_lock(&data->access_lock);
dev_dbg(&client->dev, "page select - page: 0x%.02x\n", page);
ret = i2c_smbus_write_byte_data(client, FTS_PAGE_SELECT_REG, page);
if (ret < 0)
goto error;
reg &= 0xFF;
dev_dbg(&client->dev,
"write - reg: 0x%.02x: val: 0x%.02x\n", reg, value);
ret = i2c_smbus_write_byte_data(client, reg, value);
error:
mutex_unlock(&data->access_lock);
return ret;
}
/*****************************************************************************/
/* Data Updater Helper function */
/*****************************************************************************/
static int fts_update_device(struct fts_data *data)
{
int i;
int err = 0;
mutex_lock(&data->update_lock);
if (!time_after(jiffies, data->last_updated + 2 * HZ) && data->valid)
goto exit;
err = fts_read_byte(data->client, FTS_DEVICE_STATUS_REG);
if (err < 0)
goto exit;
data->valid = !!(err & 0x02); /* Data not ready yet */
if (unlikely(!data->valid)) {
err = -EAGAIN;
goto exit;
}
err = fts_read_byte(data->client, FTS_FAN_PRESENT_REG);
if (err < 0)
goto exit;
data->fan_present = err;
err = fts_read_byte(data->client, FTS_FAN_EVENT_REG);
if (err < 0)
goto exit;
data->fan_alarm = err;
for (i = 0; i < FTS_NO_FAN_SENSORS; i++) {
if (data->fan_present & BIT(i)) {
err = fts_read_byte(data->client, FTS_REG_FAN_INPUT(i));
if (err < 0)
goto exit;
data->fan_input[i] = err;
err = fts_read_byte(data->client,
FTS_REG_FAN_SOURCE(i));
if (err < 0)
goto exit;
data->fan_source[i] = err;
} else {
data->fan_input[i] = 0;
data->fan_source[i] = 0;
}
}
err = fts_read_byte(data->client, FTS_SENSOR_EVENT_REG);
if (err < 0)
goto exit;
data->temp_alarm = err;
for (i = 0; i < FTS_NO_TEMP_SENSORS; i++) {
err = fts_read_byte(data->client, FTS_REG_TEMP_INPUT(i));
if (err < 0)
goto exit;
data->temp_input[i] = err;
}
for (i = 0; i < FTS_NO_VOLT_SENSORS; i++) {
err = fts_read_byte(data->client, FTS_REG_VOLT(i));
if (err < 0)
goto exit;
data->volt[i] = err;
}
data->last_updated = jiffies;
err = 0;
exit:
mutex_unlock(&data->update_lock);
return err;
}
/*****************************************************************************/
/* Watchdog functions */
/*****************************************************************************/
static int fts_wd_set_resolution(struct fts_data *data,
enum WATCHDOG_RESOLUTION resolution)
{
int ret;
if (data->resolution == resolution)
return 0;
ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL);
if (ret < 0)
return ret;
if ((resolution == seconds && ret & BIT(1)) ||
(resolution == minutes && (ret & BIT(1)) == 0)) {
data->resolution = resolution;
return 0;
}
if (resolution == seconds)
set_bit(1, (unsigned long *)&ret);
else
ret &= ~BIT(1);
ret = fts_write_byte(data->client, FTS_WATCHDOG_CONTROL, ret);
if (ret < 0)
return ret;
data->resolution = resolution;
return ret;
}
static int fts_wd_set_timeout(struct watchdog_device *wdd, unsigned int timeout)
{
struct fts_data *data;
enum WATCHDOG_RESOLUTION resolution = seconds;
int ret;
data = watchdog_get_drvdata(wdd);
/* switch watchdog resolution to minutes if timeout does not fit
* into a byte
*/
if (timeout > 0xFF) {
timeout = DIV_ROUND_UP(timeout, 60) * 60;
resolution = minutes;
}
ret = fts_wd_set_resolution(data, resolution);
if (ret < 0)
return ret;
wdd->timeout = timeout;
return 0;
}
static int fts_wd_start(struct watchdog_device *wdd)
{
struct fts_data *data = watchdog_get_drvdata(wdd);
return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET,
wdd->timeout / (u8)data->resolution);
}
static int fts_wd_stop(struct watchdog_device *wdd)
{
struct fts_data *data;
data = watchdog_get_drvdata(wdd);
return fts_write_byte(data->client, FTS_WATCHDOG_TIME_PRESET, 0);
}
static const struct watchdog_info fts_wd_info = {
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
.identity = "FTS Teutates Hardware Watchdog",
};
static const struct watchdog_ops fts_wd_ops = {
.owner = THIS_MODULE,
.start = fts_wd_start,
.stop = fts_wd_stop,
.set_timeout = fts_wd_set_timeout,
};
static int fts_watchdog_init(struct fts_data *data)
{
int timeout, ret;
watchdog_set_drvdata(&data->wdd, data);
timeout = fts_read_byte(data->client, FTS_WATCHDOG_TIME_PRESET);
if (timeout < 0)
return timeout;
/* watchdog not running, set timeout to a default of 60 sec. */
if (timeout == 0) {
ret = fts_wd_set_resolution(data, seconds);
if (ret < 0)
return ret;
data->wdd.timeout = 60;
} else {
ret = fts_read_byte(data->client, FTS_WATCHDOG_CONTROL);
if (ret < 0)
return ret;
data->resolution = ret & BIT(1) ? seconds : minutes;
data->wdd.timeout = timeout * (u8)data->resolution;
set_bit(WDOG_HW_RUNNING, &data->wdd.status);
}
/* Register our watchdog part */
data->wdd.info = &fts_wd_info;
data->wdd.ops = &fts_wd_ops;
data->wdd.parent = &data->client->dev;
data->wdd.min_timeout = 1;
/* max timeout 255 minutes. */
data->wdd.max_hw_heartbeat_ms = 0xFF * 60 * MSEC_PER_SEC;
return watchdog_register_device(&data->wdd);
}
/*****************************************************************************/
/* SysFS handler functions */
/*****************************************************************************/
static ssize_t show_in_value(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
int err;
err = fts_update_device(data);
if (err < 0)
return err;
return sprintf(buf, "%u\n", data->volt[index]);
}
static ssize_t show_temp_value(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
int err;
err = fts_update_device(data);
if (err < 0)
return err;
return sprintf(buf, "%u\n", data->temp_input[index]);
}
static ssize_t show_temp_fault(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
int err;
err = fts_update_device(data);
if (err < 0)
return err;
/* 00h Temperature = Sensor Error */
return sprintf(buf, "%d\n", data->temp_input[index] == 0);
}
static ssize_t show_temp_alarm(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
int err;
err = fts_update_device(data);
if (err < 0)
return err;
return sprintf(buf, "%u\n", !!(data->temp_alarm & BIT(index)));
}
static ssize_t
clear_temp_alarm(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
long ret;
ret = fts_update_device(data);
if (ret < 0)
return ret;
if (kstrtoul(buf, 10, &ret) || ret != 0)
return -EINVAL;
mutex_lock(&data->update_lock);
ret = fts_read_byte(data->client, FTS_REG_TEMP_CONTROL(index));
if (ret < 0)
goto error;
ret = fts_write_byte(data->client, FTS_REG_TEMP_CONTROL(index),
ret | 0x1);
if (ret < 0)
goto error;
data->valid = false;
error:
mutex_unlock(&data->update_lock);
return ret;
}
static ssize_t show_fan_value(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
int err;
err = fts_update_device(data);
if (err < 0)
return err;
return sprintf(buf, "%u\n", data->fan_input[index]);
}
static ssize_t show_fan_source(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
int err;
err = fts_update_device(data);
if (err < 0)
return err;
return sprintf(buf, "%u\n", data->fan_source[index]);
}
static ssize_t show_fan_alarm(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
int err;
err = fts_update_device(data);
if (err < 0)
return err;
return sprintf(buf, "%d\n", !!(data->fan_alarm & BIT(index)));
}
static ssize_t
clear_fan_alarm(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
struct fts_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(devattr)->index;
long ret;
ret = fts_update_device(data);
if (ret < 0)
return ret;
if (kstrtoul(buf, 10, &ret) || ret != 0)
return -EINVAL;
mutex_lock(&data->update_lock);
ret = fts_read_byte(data->client, FTS_REG_FAN_CONTROL(index));
if (ret < 0)
goto error;
ret = fts_write_byte(data->client, FTS_REG_FAN_CONTROL(index),
ret | 0x1);
if (ret < 0)
goto error;
data->valid = false;
error:
mutex_unlock(&data->update_lock);
return ret;
}
/*****************************************************************************/
/* SysFS structs */
/*****************************************************************************/
/* Temprature sensors */
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_value, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_value, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_value, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_value, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp_value, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp_value, NULL, 5);
static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp_value, NULL, 6);
static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp_value, NULL, 7);
static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp_value, NULL, 8);
static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp_value, NULL, 9);
static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO, show_temp_value, NULL, 10);
static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO, show_temp_value, NULL, 11);
static SENSOR_DEVICE_ATTR(temp13_input, S_IRUGO, show_temp_value, NULL, 12);
static SENSOR_DEVICE_ATTR(temp14_input, S_IRUGO, show_temp_value, NULL, 13);
static SENSOR_DEVICE_ATTR(temp15_input, S_IRUGO, show_temp_value, NULL, 14);
static SENSOR_DEVICE_ATTR(temp16_input, S_IRUGO, show_temp_value, NULL, 15);
static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5);
static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6);
static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7);
static SENSOR_DEVICE_ATTR(temp9_fault, S_IRUGO, show_temp_fault, NULL, 8);
static SENSOR_DEVICE_ATTR(temp10_fault, S_IRUGO, show_temp_fault, NULL, 9);
static SENSOR_DEVICE_ATTR(temp11_fault, S_IRUGO, show_temp_fault, NULL, 10);
static SENSOR_DEVICE_ATTR(temp12_fault, S_IRUGO, show_temp_fault, NULL, 11);
static SENSOR_DEVICE_ATTR(temp13_fault, S_IRUGO, show_temp_fault, NULL, 12);
static SENSOR_DEVICE_ATTR(temp14_fault, S_IRUGO, show_temp_fault, NULL, 13);
static SENSOR_DEVICE_ATTR(temp15_fault, S_IRUGO, show_temp_fault, NULL, 14);
static SENSOR_DEVICE_ATTR(temp16_fault, S_IRUGO, show_temp_fault, NULL, 15);
static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 0);
static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 1);
static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 2);
static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 3);
static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 4);
static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 5);
static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 6);
static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 7);
static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 8);
static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 9);
static SENSOR_DEVICE_ATTR(temp11_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 10);
static SENSOR_DEVICE_ATTR(temp12_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 11);
static SENSOR_DEVICE_ATTR(temp13_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 12);
static SENSOR_DEVICE_ATTR(temp14_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 13);
static SENSOR_DEVICE_ATTR(temp15_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 14);
static SENSOR_DEVICE_ATTR(temp16_alarm, S_IRUGO | S_IWUSR, show_temp_alarm,
clear_temp_alarm, 15);
static struct attribute *fts_temp_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp4_input.dev_attr.attr,
&sensor_dev_attr_temp5_input.dev_attr.attr,
&sensor_dev_attr_temp6_input.dev_attr.attr,
&sensor_dev_attr_temp7_input.dev_attr.attr,
&sensor_dev_attr_temp8_input.dev_attr.attr,
&sensor_dev_attr_temp9_input.dev_attr.attr,
&sensor_dev_attr_temp10_input.dev_attr.attr,
&sensor_dev_attr_temp11_input.dev_attr.attr,
&sensor_dev_attr_temp12_input.dev_attr.attr,
&sensor_dev_attr_temp13_input.dev_attr.attr,
&sensor_dev_attr_temp14_input.dev_attr.attr,
&sensor_dev_attr_temp15_input.dev_attr.attr,
&sensor_dev_attr_temp16_input.dev_attr.attr,
&sensor_dev_attr_temp1_fault.dev_attr.attr,
&sensor_dev_attr_temp2_fault.dev_attr.attr,
&sensor_dev_attr_temp3_fault.dev_attr.attr,
&sensor_dev_attr_temp4_fault.dev_attr.attr,
&sensor_dev_attr_temp5_fault.dev_attr.attr,
&sensor_dev_attr_temp6_fault.dev_attr.attr,
&sensor_dev_attr_temp7_fault.dev_attr.attr,
&sensor_dev_attr_temp8_fault.dev_attr.attr,
&sensor_dev_attr_temp9_fault.dev_attr.attr,
&sensor_dev_attr_temp10_fault.dev_attr.attr,
&sensor_dev_attr_temp11_fault.dev_attr.attr,
&sensor_dev_attr_temp12_fault.dev_attr.attr,
&sensor_dev_attr_temp13_fault.dev_attr.attr,
&sensor_dev_attr_temp14_fault.dev_attr.attr,
&sensor_dev_attr_temp15_fault.dev_attr.attr,
&sensor_dev_attr_temp16_fault.dev_attr.attr,
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
&sensor_dev_attr_temp4_alarm.dev_attr.attr,
&sensor_dev_attr_temp5_alarm.dev_attr.attr,
&sensor_dev_attr_temp6_alarm.dev_attr.attr,
&sensor_dev_attr_temp7_alarm.dev_attr.attr,
&sensor_dev_attr_temp8_alarm.dev_attr.attr,
&sensor_dev_attr_temp9_alarm.dev_attr.attr,
&sensor_dev_attr_temp10_alarm.dev_attr.attr,
&sensor_dev_attr_temp11_alarm.dev_attr.attr,
&sensor_dev_attr_temp12_alarm.dev_attr.attr,
&sensor_dev_attr_temp13_alarm.dev_attr.attr,
&sensor_dev_attr_temp14_alarm.dev_attr.attr,
&sensor_dev_attr_temp15_alarm.dev_attr.attr,
&sensor_dev_attr_temp16_alarm.dev_attr.attr,
NULL
};
/* Fans */
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_value, NULL, 0);
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_value, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan_value, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan_value, NULL, 3);
static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan_value, NULL, 4);
static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan_value, NULL, 5);
static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan_value, NULL, 6);
static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan_value, NULL, 7);
static SENSOR_DEVICE_ATTR(fan1_source, S_IRUGO, show_fan_source, NULL, 0);
static SENSOR_DEVICE_ATTR(fan2_source, S_IRUGO, show_fan_source, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_source, S_IRUGO, show_fan_source, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_source, S_IRUGO, show_fan_source, NULL, 3);
static SENSOR_DEVICE_ATTR(fan5_source, S_IRUGO, show_fan_source, NULL, 4);
static SENSOR_DEVICE_ATTR(fan6_source, S_IRUGO, show_fan_source, NULL, 5);
static SENSOR_DEVICE_ATTR(fan7_source, S_IRUGO, show_fan_source, NULL, 6);
static SENSOR_DEVICE_ATTR(fan8_source, S_IRUGO, show_fan_source, NULL, 7);
static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO | S_IWUSR,
show_fan_alarm, clear_fan_alarm, 0);
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO | S_IWUSR,
show_fan_alarm, clear_fan_alarm, 1);
static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO | S_IWUSR,
show_fan_alarm, clear_fan_alarm, 2);
static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO | S_IWUSR,
show_fan_alarm, clear_fan_alarm, 3);
static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO | S_IWUSR,
show_fan_alarm, clear_fan_alarm, 4);
static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO | S_IWUSR,
show_fan_alarm, clear_fan_alarm, 5);
static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO | S_IWUSR,
show_fan_alarm, clear_fan_alarm, 6);
static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO | S_IWUSR,
show_fan_alarm, clear_fan_alarm, 7);
static struct attribute *fts_fan_attrs[] = {
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_fan2_input.dev_attr.attr,
&sensor_dev_attr_fan3_input.dev_attr.attr,
&sensor_dev_attr_fan4_input.dev_attr.attr,
&sensor_dev_attr_fan5_input.dev_attr.attr,
&sensor_dev_attr_fan6_input.dev_attr.attr,
&sensor_dev_attr_fan7_input.dev_attr.attr,
&sensor_dev_attr_fan8_input.dev_attr.attr,
&sensor_dev_attr_fan1_source.dev_attr.attr,
&sensor_dev_attr_fan2_source.dev_attr.attr,
&sensor_dev_attr_fan3_source.dev_attr.attr,
&sensor_dev_attr_fan4_source.dev_attr.attr,
&sensor_dev_attr_fan5_source.dev_attr.attr,
&sensor_dev_attr_fan6_source.dev_attr.attr,
&sensor_dev_attr_fan7_source.dev_attr.attr,
&sensor_dev_attr_fan8_source.dev_attr.attr,
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
&sensor_dev_attr_fan4_alarm.dev_attr.attr,
&sensor_dev_attr_fan5_alarm.dev_attr.attr,
&sensor_dev_attr_fan6_alarm.dev_attr.attr,
&sensor_dev_attr_fan7_alarm.dev_attr.attr,
&sensor_dev_attr_fan8_alarm.dev_attr.attr,
NULL
};
/* Voltages */
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in_value, NULL, 0);
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in_value, NULL, 1);
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in_value, NULL, 2);
static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in_value, NULL, 3);
static struct attribute *fts_voltage_attrs[] = {
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in2_input.dev_attr.attr,
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in4_input.dev_attr.attr,
NULL
};
static const struct attribute_group fts_voltage_attr_group = {
.attrs = fts_voltage_attrs
};
static const struct attribute_group fts_temp_attr_group = {
.attrs = fts_temp_attrs
};
static const struct attribute_group fts_fan_attr_group = {
.attrs = fts_fan_attrs
};
static const struct attribute_group *fts_attr_groups[] = {
&fts_voltage_attr_group,
&fts_temp_attr_group,
&fts_fan_attr_group,
NULL
};
/*****************************************************************************/
/* Module initialization / remove functions */
/*****************************************************************************/
static int fts_remove(struct i2c_client *client)
{
struct fts_data *data = dev_get_drvdata(&client->dev);
watchdog_unregister_device(&data->wdd);
return 0;
}
static int fts_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
u8 revision;
struct fts_data *data;
int err;
s8 deviceid;
struct device *hwmon_dev;
if (client->addr != 0x73)
return -ENODEV;
/* Baseboard Management Controller check */
deviceid = i2c_smbus_read_byte_data(client, FTS_DEVICE_ID_REG);
if (deviceid > 0 && (deviceid & 0xF0) == 0x10) {
switch (deviceid & 0x0F) {
case 0x01:
break;
default:
dev_dbg(&client->dev,
"No Baseboard Management Controller\n");
return -ENODEV;
}
} else {
dev_dbg(&client->dev, "No fujitsu board\n");
return -ENODEV;
}
data = devm_kzalloc(&client->dev, sizeof(struct fts_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
mutex_init(&data->update_lock);
mutex_init(&data->access_lock);
data->client = client;
dev_set_drvdata(&client->dev, data);
err = i2c_smbus_read_byte_data(client, FTS_DEVICE_REVISION_REG);
if (err < 0)
return err;
revision = err;
hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
"ftsteutates",
data,
fts_attr_groups);
if (IS_ERR(hwmon_dev))
return PTR_ERR(hwmon_dev);
err = fts_watchdog_init(data);
if (err)
return err;
dev_info(&client->dev, "Detected FTS Teutates chip, revision: %d.%d\n",
(revision & 0xF0) >> 4, revision & 0x0F);
return 0;
}
/*****************************************************************************/
/* Module Details */
/*****************************************************************************/
static struct i2c_driver fts_driver = {
.driver = {
.name = "ftsteutates",
},
.id_table = fts_id,
.probe = fts_probe,
.remove = fts_remove,
};
module_i2c_driver(fts_driver);
MODULE_AUTHOR("Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com>");
MODULE_DESCRIPTION("FTS Teutates driver");
MODULE_LICENSE("GPL");