hwmon: Add driver for FTS BMC chip "Teutates"
authorThilo Cestonaro <thilo@cestona.ro>
Mon, 18 Jul 2016 11:51:29 +0000 (13:51 +0200)
committerGuenter Roeck <linux@roeck-us.net>
Wed, 20 Jul 2016 13:29:54 +0000 (06:29 -0700)
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>
Documentation/hwmon/ftsteutates [new file with mode: 0644]
drivers/hwmon/Kconfig
drivers/hwmon/Makefile
drivers/hwmon/ftsteutates.c [new file with mode: 0644]

diff --git a/Documentation/hwmon/ftsteutates b/Documentation/hwmon/ftsteutates
new file mode 100644 (file)
index 0000000..2a1bf69
--- /dev/null
@@ -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
index e72cd3d33d4e70e72e40b9ddc45785277de70685..eaf2f916d48c52c0315baef4f6784b90f59d7df2 100644 (file)
@@ -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
index 446a4e74c7cfdfdc80a4e128ede6235e02f765f1..fe87d2895a97a058838286d1b73d46b0b57940a2 100644 (file)
@@ -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
diff --git a/drivers/hwmon/ftsteutates.c b/drivers/hwmon/ftsteutates.c
new file mode 100644 (file)
index 0000000..aaef5b5
--- /dev/null
@@ -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");