2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller Signed-off-by: Roland Stigge <stigge@xxxxxxxxx> diff --git a/Documentation/hwmon/max6639 b/Documentation/hwmon/max6639 new file mode 100644 index 0000000..debb3f0 --- /dev/null +++ b/Documentation/hwmon/max6639 @@ -0,0 +1,37 @@ +Kernel driver max6639 +===================== + +Supported chips: + * Maxim MAX6639 + Prefix: 'max6639' + Addresses scanned: I2C 0x2c, 0x2e, 0x2f + Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6639.pdf + +Authors: + He Changqing <hechangqing@xxxxxxxxxxxx> + Roland Stigge <stigge@xxxxxxxxx> + +Description +----------- + +This driver implements support for the Maxim MAX6639. This chip is a 2-channel +temperature monitor with dual PWM fan speed controller. It can monitor its own +temperature and one external diode-connected transistor or two external +diode-connected transistors. + +The following device attributes are implemented via sysfs: + +Attribute R/W Contents +---------------------------------------------------------------------------- +temp1_input R Temperature channel 1 input (0..150 C) +temp2_input R Temperature channel 2 input (0..150 C) +temp1_max RW Set THERM temperature for input 1 (in C, see datasheet) +temp2_max RW Set THERM temperature for input 2 (in C, see datasheet) +temp1_crit RW Set ALERM temperature for input 1 (in C, see datasheet) +temp2_crit RW Set ALARM temperature for input 2 (in C, see datasheet) +temp1_emergency RW Set OT temperature for input 1 (in C, see datasheet) +temp2_emergency RW Set OT temperature for input 2 (in C, see datasheet) +pwm1 RW Fan 1 target duty cycle (0..255) +pwm2 RW Fan 2 target duty cycle (0..255) +fan1_input R TACH1 fan tachometer input (in RPM) +fan2_input R TACH2 fan tachometer input (in RPM) diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index a56f6ad..8eb116c 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -674,6 +674,16 @@ config SENSORS_MAX1619 This driver can also be built as a module. If so, the module will be called max1619. +config SENSORS_MAX6639 + tristate "Maxim MAX6639 sensor chip" + depends on I2C && EXPERIMENTAL + help + If you say yes here you get support for the MAX6639 + sensor chips. + + This driver can also be built as a module. If so, the module + will be called max6639. + config SENSORS_MAX6650 tristate "Maxim MAX6650 sensor chip" depends on I2C && EXPERIMENTAL diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 2479b3d..a85fa3f 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -83,6 +83,7 @@ obj-$(CONFIG_SENSORS_LTC4245) += ltc4245.o obj-$(CONFIG_SENSORS_LTC4261) += ltc4261.o obj-$(CONFIG_SENSORS_MAX1111) += max1111.o obj-$(CONFIG_SENSORS_MAX1619) += max1619.o +obj-$(CONFIG_SENSORS_MAX6639) += max6639.o obj-$(CONFIG_SENSORS_MAX6650) += max6650.o obj-$(CONFIG_SENSORS_MC13783_ADC)+= mc13783-adc.o obj-$(CONFIG_SENSORS_PC87360) += pc87360.o diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c new file mode 100644 index 0000000..64e77f9 --- /dev/null +++ b/drivers/hwmon/max6639.c @@ -0,0 +1,567 @@ +/* + * max6639.c - Support for Maxim MAX6639 + * + * 2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller + * + * Copyright (C) 2010, 2011 Roland Stigge <stigge@xxxxxxxxx> + * + * based on the initial MAX6639 support from septian.net + * by He Changqing <hechangqing@xxxxxxxxxxxx> + * + * 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/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/jiffies.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/err.h> +#include <linux/mutex.h> +#include <linux/i2c/max6639.h> + +/* Addresses to scan */ +static unsigned short normal_i2c[] = { 0x2c, 0x2e, 0x2f, I2C_CLIENT_END }; + +/* The MAX6639 registers, valid channel numbers: 0, 1 */ +#define MAX6639_REG_TEMP(ch) (0x00 + ch) +#define MAX6639_REG_STATUS 0x02 +#define MAX6639_REG_OUTPUT_MASK 0x03 +#define MAX6639_REG_GCONFIG 0x04 +#define MAX6639_REG_TEMP_EXT(ch) (0x05 + ch) +#define MAX6639_REG_ALERT_LIMIT(ch) (0x08 + ch) +#define MAX6639_REG_OT_LIMIT(ch) (0x0A + ch) +#define MAX6639_REG_THERM_LIMIT(ch) (0x0C + ch) +#define MAX6639_REG_FAN_CONFIG1(ch) (0x10 + ch * 4) +#define MAX6639_REG_FAN_CONFIG2a(ch) (0x11 + ch * 4) +#define MAX6639_REG_FAN_CONFIG2b(ch) (0x12 + ch * 4) +#define MAX6639_REG_FAN_CONFIG3(ch) (0x13 + ch * 4) +#define MAX6639_REG_FAN_CNT(ch) (0x20 + ch) +#define MAX6639_REG_TARGET_CNT(ch) (0x22 + ch) +#define MAX6639_REG_FAN_PPR(ch) (0x24 + ch) +#define MAX6639_REG_TARGTDUTY(ch) (0x26 + ch) +#define MAX6639_REG_FAN_START_TEMP(ch) (0x28 + ch) +#define MAX6639_REG_DEVID 0x3D +#define MAX6639_REG_MANUID 0x3E +#define MAX6639_REG_DEVREV 0x3F + +/* Register bits */ +#define MAX6639_GCONFIG_STANDBY 0x80 +#define MAX6639_GCONFIG_POR 0x40 +#define MAX6639_GCONFIG_DISABLE_TIMEOUT 0x20 +#define MAX6639_GCONFIG_CH2_LOCAL 0x10 + +#define MAX6639_FAN_CONFIG1_PWM 0x80 + +static int rpm_ranges[] = { 2000, 4000, 8000, 16000 }; + +#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : \ + (val) == 255 ? 0 : (4000 * 30) / ((div + 1) * (val))) +#define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT((val) / 1000, 0, 255) + +/* + * Client data (each client gets its own) + */ +struct max6639_data { + struct device *hwmon_dev; + struct mutex update_lock; + char valid; /* !=0 if following fields are valid */ + unsigned long last_updated; /* In jiffies */ + + /* Register values sampled regularly */ + u16 temp[2]; /* Temperature, in 1/8 C, 0..255 C */ + u8 fan[2]; /* Register value: TACH count for fans >=30 */ + + /* Register values only written to */ + u8 pwm[2]; /* Register value: Duty cycle 0..120 */ + u8 temp_therm[2]; /* THERM Temperature, 0..255 C (->_max) */ + u8 temp_alert[2]; /* ALERT Temperature, 0..255 C (->_crit) */ + u8 temp_ot[2]; /* OT Temperature, 0..255 C (->_emergency) */ + + /* Register values initialized only once */ + u8 ppr[2]; /* Pulses per rotation 0..3 for 1..4 ppr */ +}; + +static int max6639_read_value(struct i2c_client *client, u8 reg) +{ + return i2c_smbus_read_byte_data(client, reg); +} + +static int max6639_write_value(struct i2c_client *client, u8 reg, u8 value) +{ + return i2c_smbus_write_byte_data(client, reg, value); +} + +static struct max6639_data *max6639_update_device(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct max6639_data *ret = data; + int i; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { + int res; + + dev_dbg(&client->dev, "Starting max6639 update\n"); + + for (i = 0; i < 2; i++) { + res = max6639_read_value(client, + MAX6639_REG_FAN_CNT(i)); + if (res < 0) { + ret = ERR_PTR(res); + goto abort; + } + data->fan[i] = res; + + res = (max6639_read_value(client, + MAX6639_REG_TEMP_EXT(i)) >> 5) + | (max6639_read_value(client, + MAX6639_REG_TEMP(i)) << 3); + if (res < 0) { + ret = ERR_PTR(res); + goto abort; + } + data->temp[i] = res; + } + + data->last_updated = jiffies; + data->valid = 1; + } +abort: + mutex_unlock(&data->update_lock); + + return ret; +} + +static ssize_t show_temp_input(struct device *dev, + struct device_attribute *dev_attr, char *buf) +{ + long temp; + struct max6639_data *data = max6639_update_device(dev); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + + temp = data->temp[attr->index] * 125; + return sprintf(buf, "%ld\n", temp); +} + +static ssize_t show_temp_max(struct device *dev, + struct device_attribute *dev_attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + + return sprintf(buf, "%d\n", (data->temp_therm[attr->index] * 1000)); +} + +static ssize_t set_temp_max(struct device *dev, + struct device_attribute *dev_attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + unsigned long val; + int res; + + res = strict_strtoul(buf, 10, &val); + if (res) + return res; + + mutex_lock(&data->update_lock); + data->temp_therm[attr->index] = TEMP_LIMIT_TO_REG(val); + max6639_write_value(client, MAX6639_REG_THERM_LIMIT(attr->index), + data->temp_therm[attr->index]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t show_temp_crit(struct device *dev, + struct device_attribute *dev_attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + + return sprintf(buf, "%d\n", (data->temp_alert[attr->index] * 1000)); +} + +static ssize_t set_temp_crit(struct device *dev, + struct device_attribute *dev_attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + unsigned long val; + int res; + + res = strict_strtoul(buf, 10, &val); + if (res) + return res; + + mutex_lock(&data->update_lock); + data->temp_alert[attr->index] = TEMP_LIMIT_TO_REG(val); + max6639_write_value(client, MAX6639_REG_THERM_LIMIT(attr->index), + data->temp_alert[attr->index]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t show_temp_emergency(struct device *dev, + struct device_attribute *dev_attr, + char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + + return sprintf(buf, "%d\n", (data->temp_ot[attr->index] * 1000)); +} + +static ssize_t set_temp_emergency(struct device *dev, + struct device_attribute *dev_attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + unsigned long val; + int res; + + res = strict_strtoul(buf, 10, &val); + if (res) + return res; + + mutex_lock(&data->update_lock); + data->temp_ot[attr->index] = TEMP_LIMIT_TO_REG(val); + max6639_write_value(client, MAX6639_REG_THERM_LIMIT(attr->index), + data->temp_ot[attr->index]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t show_pwm(struct device *dev, + struct device_attribute *dev_attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + + return sprintf(buf, "%d\n", data->pwm[attr->index] * 255 / 120); +} + +static ssize_t set_pwm(struct device *dev, + struct device_attribute *dev_attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct max6639_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + long val; + int res; + + res = strict_strtoul(buf, 10, &val); + if (res) + return res; + + mutex_lock(&data->update_lock); + data->pwm[attr->index] = (u8)(val * 120 / 255); + max6639_write_value(client, MAX6639_REG_TARGTDUTY(attr->index), + data->pwm[attr->index]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t show_fan_input(struct device *dev, + struct device_attribute *dev_attr, char *buf) +{ + struct max6639_data *data = max6639_update_device(dev); + struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr); + + return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index], + data->ppr[attr->index])); +} + +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0); +static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1); +static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, + set_temp_max, 0); +static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max, + set_temp_max, 1); +static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_crit, + set_temp_crit, 0); +static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit, + set_temp_crit, 1); +static SENSOR_DEVICE_ATTR(temp1_emergency, S_IWUSR | S_IRUGO, + show_temp_emergency, set_temp_emergency, 0); +static SENSOR_DEVICE_ATTR(temp2_emergency, S_IWUSR | S_IRUGO, + show_temp_emergency, set_temp_emergency, 1); +static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0); +static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1); +static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0); +static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1); + +static struct attribute *max6639_attributes[] = { + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp1_crit.dev_attr.attr, + &sensor_dev_attr_temp2_crit.dev_attr.attr, + &sensor_dev_attr_temp1_emergency.dev_attr.attr, + &sensor_dev_attr_temp2_emergency.dev_attr.attr, + &sensor_dev_attr_pwm1.dev_attr.attr, + &sensor_dev_attr_pwm2.dev_attr.attr, + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + NULL +}; + +static const struct attribute_group max6639_group = { + .attrs = max6639_attributes, +}; + +/* returns respective index in rpm_ranges table, -1 on invalid range */ +static int rpm_range_to_reg(int range) +{ + int i; + int result = -1; + + for (i = 0; i < ARRAY_SIZE(rpm_ranges); i++) { + if (rpm_ranges[i] == range) + result = i; + } + + return result; +} + +static int max6639_init_client(struct i2c_client *client) +{ + struct max6639_data *data = i2c_get_clientdata(client); + struct max6639_platform_data *max6639_info = + client->dev.platform_data; + int i; + int rpm_range = -1; + int err = 0; + + /* Reset chip to default values */ + err = max6639_write_value(client, MAX6639_REG_GCONFIG, + MAX6639_GCONFIG_POR); + if (err) + goto exit; + + /* RPM range, 4000 by default */ + if (max6639_info) + rpm_range = rpm_range_to_reg(max6639_info->rpm_range); + if (rpm_range < 0) + rpm_range = 1; + + for (i = 0; i < 2; i++) { + + /* Fans config PWM, RPM */ + err = max6639_write_value(client, MAX6639_REG_FAN_CONFIG1(i), + MAX6639_FAN_CONFIG1_PWM | rpm_range); + if (err) + goto exit; + + /* Fans pulse per revolution is 2 by default */ + if (max6639_info) + data->ppr[i] = max6639_info->ppr; + else + data->ppr[i] = 2; + data->ppr[i] -= 1; + err = max6639_write_value(client, MAX6639_REG_FAN_PPR(i), + (data->ppr[i]) << 5); + if (err) + goto exit; + + /* Fans PWM polarity high by default */ + if (max6639_info && max6639_info->pwm_polarity == 0) + err = max6639_write_value(client, + MAX6639_REG_FAN_CONFIG2a(i), 0x00); + else + err = max6639_write_value(client, + MAX6639_REG_FAN_CONFIG2a(i), 0x02); + if (err) + goto exit; + + /* Max. temp. 80C/90C/100C */ + data->temp_therm[i] = 80; + data->temp_alert[i] = 90; + data->temp_ot[i] = 100; + err = max6639_write_value(client, MAX6639_REG_THERM_LIMIT(i), + data->temp_therm[i]); + if (err) + goto exit; + err = max6639_write_value(client, MAX6639_REG_ALERT_LIMIT(i), + data->temp_alert[i]); + if (err) + goto exit; + err = max6639_write_value(client, MAX6639_REG_OT_LIMIT(i), + data->temp_ot[i]); + if (err) + goto exit; + + /* PWM 120/120 (i.e. 100%) */ + data->pwm[i] = 120; + err = max6639_write_value(client, MAX6639_REG_TARGTDUTY(i), + data->pwm[i]); + if (err) + goto exit; + } + /* Start monitoring */ + err = max6639_write_value(client, MAX6639_REG_GCONFIG, + MAX6639_GCONFIG_DISABLE_TIMEOUT | MAX6639_GCONFIG_CH2_LOCAL); +exit: + return err; +} + +/* Return 0 if detection is successful, -ENODEV otherwise */ +static int max6639_detect(struct i2c_client *client, + struct i2c_board_info *info) +{ + struct i2c_adapter *adapter = client->adapter; + int dev_id, manu_id; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + /* Actual detection via device and manufacturer ID */ + dev_id = max6639_read_value(client, MAX6639_REG_DEVID); + manu_id = max6639_read_value(client, MAX6639_REG_MANUID); + if (dev_id != 0x58 || manu_id != 0x4D) + return -ENODEV; + + strlcpy(info->type, "max6639", I2C_NAME_SIZE); + + return 0; +} + +static int max6639_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct max6639_data *data; + int err; + + data = kzalloc(sizeof(struct max6639_data), GFP_KERNEL); + if (!data) { + err = -ENOMEM; + goto exit; + } + + i2c_set_clientdata(client, data); + mutex_init(&data->update_lock); + + /* Initialize the max6639 chip */ + err = max6639_init_client(client); + if (err < 0) + goto error_free; + + /* Register sysfs hooks */ + err = sysfs_create_group(&client->dev.kobj, &max6639_group); + if (err) + goto error_free; + + data->hwmon_dev = hwmon_device_register(&client->dev); + if (IS_ERR(data->hwmon_dev)) { + err = PTR_ERR(data->hwmon_dev); + goto error_remove; + } + + dev_info(&client->dev, "temperature sensor and fan control found\n"); + + return 0; + +error_remove: + sysfs_remove_group(&client->dev.kobj, &max6639_group); +error_free: + kfree(data); +exit: + return err; +} + +static int max6639_remove(struct i2c_client *client) +{ + struct max6639_data *data = i2c_get_clientdata(client); + + hwmon_device_unregister(data->hwmon_dev); + sysfs_remove_group(&client->dev.kobj, &max6639_group); + + kfree(data); + return 0; +} + +static int max6639_suspend(struct i2c_client *client, pm_message_t mesg) +{ + int data = max6639_read_value(client, MAX6639_REG_GCONFIG); + if (data < 0) + return data; + + return max6639_write_value(client, + MAX6639_REG_GCONFIG, data | MAX6639_GCONFIG_STANDBY); +} + +static int max6639_resume(struct i2c_client *client) +{ + int data = max6639_read_value(client, MAX6639_REG_GCONFIG); + if (data < 0) + return data; + + return max6639_write_value(client, + MAX6639_REG_GCONFIG, data & ~MAX6639_GCONFIG_STANDBY); +} + +static const struct i2c_device_id max6639_id[] = { + {"max6639", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, max6639_id); + +static struct i2c_driver max6639_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "max6639", + }, + .probe = max6639_probe, + .remove = max6639_remove, + .suspend = max6639_suspend, + .resume = max6639_resume, + .id_table = max6639_id, + .detect = max6639_detect, + .address_list = normal_i2c, +}; + +static int __init max6639_init(void) +{ + return i2c_add_driver(&max6639_driver); +} + +static void __exit max6639_exit(void) +{ + i2c_del_driver(&max6639_driver); +} + +MODULE_AUTHOR("Roland Stigge <stigge@xxxxxxxxx>"); +MODULE_DESCRIPTION("max6639 driver"); +MODULE_LICENSE("GPL"); + +module_init(max6639_init); +module_exit(max6639_exit); diff --git a/include/linux/i2c/max6639.h b/include/linux/i2c/max6639.h new file mode 100644 index 0000000..f7323c5 --- /dev/null +++ b/include/linux/i2c/max6639.h @@ -0,0 +1,15 @@ +#ifndef _LINUX_MAX6639_H +#define _LINUX_MAX6639_H + +#include <linux/types.h> +#include <linux/i2c.h> + +/* platform data for the MAX6639 temperature sensor and fan control */ + +struct max6639_platform_data { + bool pwm_polarity; /* Polarity low (0) or high (1, default) */ + int ppr; /* Pulses per rotation 1..4 (default == 1) */ + int rpm_range; /* 2000, 4000 (default), 8000 or 16000 */ +}; + +#endif /* _LINUX_MAX6639_H */ _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
