--- /dev/null
+/*
+ * 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");
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