diff options
Diffstat (limited to 'drivers/hwmon/lm80.c')
-rw-r--r-- | drivers/hwmon/lm80.c | 619 |
1 files changed, 619 insertions, 0 deletions
diff --git a/drivers/hwmon/lm80.c b/drivers/hwmon/lm80.c new file mode 100644 index 0000000..bcffc18 --- /dev/null +++ b/drivers/hwmon/lm80.c @@ -0,0 +1,619 @@ +/* + * lm80.c - From lm_sensors, Linux kernel modules for hardware + * monitoring + * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> + * and Philip Edelbrock <phil@netroedge.com> + * + * Ported to Linux 2.6 by Tiago Sousa <mirage@kaotik.org> + * + * 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> + +/* Addresses to scan */ +static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, + 0x2e, 0x2f, I2C_CLIENT_END }; + +/* Insmod parameters */ +I2C_CLIENT_INSMOD_1(lm80); + +/* Many LM80 constants specified below */ + +/* The LM80 registers */ +#define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2) +#define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2) +#define LM80_REG_IN(nr) (0x20 + (nr)) + +#define LM80_REG_FAN1 0x28 +#define LM80_REG_FAN2 0x29 +#define LM80_REG_FAN_MIN(nr) (0x3b + (nr)) + +#define LM80_REG_TEMP 0x27 +#define LM80_REG_TEMP_HOT_MAX 0x38 +#define LM80_REG_TEMP_HOT_HYST 0x39 +#define LM80_REG_TEMP_OS_MAX 0x3a +#define LM80_REG_TEMP_OS_HYST 0x3b + +#define LM80_REG_CONFIG 0x00 +#define LM80_REG_ALARM1 0x01 +#define LM80_REG_ALARM2 0x02 +#define LM80_REG_MASK1 0x03 +#define LM80_REG_MASK2 0x04 +#define LM80_REG_FANDIV 0x05 +#define LM80_REG_RES 0x06 + + +/* Conversions. Rounding and limit checking is only done on the TO_REG + variants. Note that you should be a bit careful with which arguments + these macros are called: arguments may be evaluated more than once. + Fixing this is just not worth it. */ + +#define IN_TO_REG(val) (SENSORS_LIMIT(((val)+5)/10,0,255)) +#define IN_FROM_REG(val) ((val)*10) + +static inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div) +{ + if (rpm == 0) + return 255; + rpm = SENSORS_LIMIT(rpm, 1, 1000000); + return SENSORS_LIMIT((1350000 + rpm*div / 2) / (rpm*div), 1, 254); +} + +#define FAN_FROM_REG(val,div) ((val)==0?-1:\ + (val)==255?0:1350000/((div)*(val))) + +static inline long TEMP_FROM_REG(u16 temp) +{ + long res; + + temp >>= 4; + if (temp < 0x0800) + res = 625 * (long) temp; + else + res = ((long) temp - 0x01000) * 625; + + return res / 10; +} + +#define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000) + +#define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT((val)<0?\ + ((val)-500)/1000:((val)+500)/1000,0,255) + +#define DIV_FROM_REG(val) (1 << (val)) + +/* + * Client data (each client gets its own) + */ + +struct lm80_data { + struct device *hwmon_dev; + struct mutex update_lock; + char valid; /* !=0 if following fields are valid */ + unsigned long last_updated; /* In jiffies */ + + u8 in[7]; /* Register value */ + u8 in_max[7]; /* Register value */ + u8 in_min[7]; /* Register value */ + u8 fan[2]; /* Register value */ + u8 fan_min[2]; /* Register value */ + u8 fan_div[2]; /* Register encoding, shifted right */ + u16 temp; /* Register values, shifted right */ + u8 temp_hot_max; /* Register value */ + u8 temp_hot_hyst; /* Register value */ + u8 temp_os_max; /* Register value */ + u8 temp_os_hyst; /* Register value */ + u16 alarms; /* Register encoding, combined */ +}; + +/* + * Functions declaration + */ + +static int lm80_probe(struct i2c_client *client, + const struct i2c_device_id *id); +static int lm80_detect(struct i2c_client *client, int kind, + struct i2c_board_info *info); +static void lm80_init_client(struct i2c_client *client); +static int lm80_remove(struct i2c_client *client); +static struct lm80_data *lm80_update_device(struct device *dev); +static int lm80_read_value(struct i2c_client *client, u8 reg); +static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value); + +/* + * Driver data (common to all clients) + */ + +static const struct i2c_device_id lm80_id[] = { + { "lm80", lm80 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, lm80_id); + +static struct i2c_driver lm80_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "lm80", + }, + .probe = lm80_probe, + .remove = lm80_remove, + .id_table = lm80_id, + .detect = lm80_detect, + .address_data = &addr_data, +}; + +/* + * Sysfs stuff + */ + +#define show_in(suffix, value) \ +static ssize_t show_in_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ +{ \ + int nr = to_sensor_dev_attr(attr)->index; \ + struct lm80_data *data = lm80_update_device(dev); \ + return sprintf(buf, "%d\n", IN_FROM_REG(data->value[nr])); \ +} +show_in(min, in_min) +show_in(max, in_max) +show_in(input, in) + +#define set_in(suffix, value, reg) \ +static ssize_t set_in_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ + size_t count) \ +{ \ + int nr = to_sensor_dev_attr(attr)->index; \ + struct i2c_client *client = to_i2c_client(dev); \ + struct lm80_data *data = i2c_get_clientdata(client); \ + long val = simple_strtol(buf, NULL, 10); \ + \ + mutex_lock(&data->update_lock);\ + data->value[nr] = IN_TO_REG(val); \ + lm80_write_value(client, reg(nr), data->value[nr]); \ + mutex_unlock(&data->update_lock);\ + return count; \ +} +set_in(min, in_min, LM80_REG_IN_MIN) +set_in(max, in_max, LM80_REG_IN_MAX) + +#define show_fan(suffix, value) \ +static ssize_t show_fan_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ +{ \ + int nr = to_sensor_dev_attr(attr)->index; \ + struct lm80_data *data = lm80_update_device(dev); \ + return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[nr], \ + DIV_FROM_REG(data->fan_div[nr]))); \ +} +show_fan(min, fan_min) +show_fan(input, fan) + +static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct lm80_data *data = lm80_update_device(dev); + return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); +} + +static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct lm80_data *data = i2c_get_clientdata(client); + long val = simple_strtoul(buf, NULL, 10); + + mutex_lock(&data->update_lock); + data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); + lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), data->fan_min[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +/* Note: we save and restore the fan minimum here, because its value is + determined in part by the fan divisor. This follows the principle of + least surprise; the user doesn't expect the fan minimum to change just + because the divisor changed. */ +static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct lm80_data *data = i2c_get_clientdata(client); + unsigned long min, val = simple_strtoul(buf, NULL, 10); + u8 reg; + + /* Save fan_min */ + mutex_lock(&data->update_lock); + min = FAN_FROM_REG(data->fan_min[nr], + DIV_FROM_REG(data->fan_div[nr])); + + switch (val) { + case 1: data->fan_div[nr] = 0; break; + case 2: data->fan_div[nr] = 1; break; + case 4: data->fan_div[nr] = 2; break; + case 8: data->fan_div[nr] = 3; break; + default: + dev_err(&client->dev, "fan_div value %ld not " + "supported. Choose one of 1, 2, 4 or 8!\n", val); + mutex_unlock(&data->update_lock); + return -EINVAL; + } + + reg = (lm80_read_value(client, LM80_REG_FANDIV) & ~(3 << (2 * (nr + 1)))) + | (data->fan_div[nr] << (2 * (nr + 1))); + lm80_write_value(client, LM80_REG_FANDIV, reg); + + /* Restore fan_min */ + data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); + lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), data->fan_min[nr]); + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t show_temp_input1(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct lm80_data *data = lm80_update_device(dev); + return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp)); +} + +#define show_temp(suffix, value) \ +static ssize_t show_temp_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ +{ \ + struct lm80_data *data = lm80_update_device(dev); \ + return sprintf(buf, "%d\n", TEMP_LIMIT_FROM_REG(data->value)); \ +} +show_temp(hot_max, temp_hot_max); +show_temp(hot_hyst, temp_hot_hyst); +show_temp(os_max, temp_os_max); +show_temp(os_hyst, temp_os_hyst); + +#define set_temp(suffix, value, reg) \ +static ssize_t set_temp_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ + size_t count) \ +{ \ + struct i2c_client *client = to_i2c_client(dev); \ + struct lm80_data *data = i2c_get_clientdata(client); \ + long val = simple_strtoul(buf, NULL, 10); \ + \ + mutex_lock(&data->update_lock); \ + data->value = TEMP_LIMIT_TO_REG(val); \ + lm80_write_value(client, reg, data->value); \ + mutex_unlock(&data->update_lock); \ + return count; \ +} +set_temp(hot_max, temp_hot_max, LM80_REG_TEMP_HOT_MAX); +set_temp(hot_hyst, temp_hot_hyst, LM80_REG_TEMP_HOT_HYST); +set_temp(os_max, temp_os_max, LM80_REG_TEMP_OS_MAX); +set_temp(os_hyst, temp_os_hyst, LM80_REG_TEMP_OS_HYST); + +static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct lm80_data *data = lm80_update_device(dev); + return sprintf(buf, "%u\n", data->alarms); +} + +static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int bitnr = to_sensor_dev_attr(attr)->index; + struct lm80_data *data = lm80_update_device(dev); + return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); +} + +static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO, + show_in_min, set_in_min, 0); +static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO, + show_in_min, set_in_min, 1); +static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO, + show_in_min, set_in_min, 2); +static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO, + show_in_min, set_in_min, 3); +static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO, + show_in_min, set_in_min, 4); +static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO, + show_in_min, set_in_min, 5); +static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO, + show_in_min, set_in_min, 6); +static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO, + show_in_max, set_in_max, 0); +static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO, + show_in_max, set_in_max, 1); +static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO, + show_in_max, set_in_max, 2); +static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO, + show_in_max, set_in_max, 3); +static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO, + show_in_max, set_in_max, 4); +static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO, + show_in_max, set_in_max, 5); +static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO, + show_in_max, set_in_max, 6); +static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0); +static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1); +static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2); +static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3); +static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4); +static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5); +static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6); +static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, + show_fan_min, set_fan_min, 0); +static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, + show_fan_min, set_fan_min, 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 SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO, + show_fan_div, set_fan_div, 0); +static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO, + show_fan_div, set_fan_div, 1); +static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); +static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_hot_max, + set_temp_hot_max); +static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, show_temp_hot_hyst, + set_temp_hot_hyst); +static DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_os_max, + set_temp_os_max); +static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_os_hyst, + set_temp_os_hyst); +static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); +static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); +static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); +static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); +static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); +static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 4); +static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 5); +static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); +static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10); +static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11); +static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 8); +static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 13); + +/* + * Real code + */ + +static struct attribute *lm80_attributes[] = { + &sensor_dev_attr_in0_min.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + &sensor_dev_attr_in4_min.dev_attr.attr, + &sensor_dev_attr_in5_min.dev_attr.attr, + &sensor_dev_attr_in6_min.dev_attr.attr, + &sensor_dev_attr_in0_max.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, + &sensor_dev_attr_in4_max.dev_attr.attr, + &sensor_dev_attr_in5_max.dev_attr.attr, + &sensor_dev_attr_in6_max.dev_attr.attr, + &sensor_dev_attr_in0_input.dev_attr.attr, + &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, + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in6_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, + &sensor_dev_attr_fan2_min.dev_attr.attr, + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan1_div.dev_attr.attr, + &sensor_dev_attr_fan2_div.dev_attr.attr, + &dev_attr_temp1_input.attr, + &dev_attr_temp1_max.attr, + &dev_attr_temp1_max_hyst.attr, + &dev_attr_temp1_crit.attr, + &dev_attr_temp1_crit_hyst.attr, + &dev_attr_alarms.attr, + &sensor_dev_attr_in0_alarm.dev_attr.attr, + &sensor_dev_attr_in1_alarm.dev_attr.attr, + &sensor_dev_attr_in2_alarm.dev_attr.attr, + &sensor_dev_attr_in3_alarm.dev_attr.attr, + &sensor_dev_attr_in4_alarm.dev_attr.attr, + &sensor_dev_attr_in5_alarm.dev_attr.attr, + &sensor_dev_attr_in6_alarm.dev_attr.attr, + &sensor_dev_attr_fan1_alarm.dev_attr.attr, + &sensor_dev_attr_fan2_alarm.dev_attr.attr, + &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, + &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, + NULL +}; + +static const struct attribute_group lm80_group = { + .attrs = lm80_attributes, +}; + +/* Return 0 if detection is successful, -ENODEV otherwise */ +static int lm80_detect(struct i2c_client *client, int kind, + struct i2c_board_info *info) +{ + struct i2c_adapter *adapter = client->adapter; + int i, cur; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + /* Now, we do the remaining detection. It is lousy. */ + if (lm80_read_value(client, LM80_REG_ALARM2) & 0xc0) + return -ENODEV; + for (i = 0x2a; i <= 0x3d; i++) { + cur = i2c_smbus_read_byte_data(client, i); + if ((i2c_smbus_read_byte_data(client, i + 0x40) != cur) + || (i2c_smbus_read_byte_data(client, i + 0x80) != cur) + || (i2c_smbus_read_byte_data(client, i + 0xc0) != cur)) + return -ENODEV; + } + + strlcpy(info->type, "lm80", I2C_NAME_SIZE); + + return 0; +} + +static int lm80_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct lm80_data *data; + int err; + + data = kzalloc(sizeof(struct lm80_data), GFP_KERNEL); + if (!data) { + err = -ENOMEM; + goto exit; + } + + i2c_set_clientdata(client, data); + mutex_init(&data->update_lock); + + /* Initialize the LM80 chip */ + lm80_init_client(client); + + /* A few vars need to be filled upon startup */ + data->fan_min[0] = lm80_read_value(client, LM80_REG_FAN_MIN(1)); + data->fan_min[1] = lm80_read_value(client, LM80_REG_FAN_MIN(2)); + + /* Register sysfs hooks */ + if ((err = sysfs_create_group(&client->dev.kobj, &lm80_group))) + 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; + } + + return 0; + +error_remove: + sysfs_remove_group(&client->dev.kobj, &lm80_group); +error_free: + kfree(data); +exit: + return err; +} + +static int lm80_remove(struct i2c_client *client) +{ + struct lm80_data *data = i2c_get_clientdata(client); + + hwmon_device_unregister(data->hwmon_dev); + sysfs_remove_group(&client->dev.kobj, &lm80_group); + + kfree(data); + return 0; +} + +static int lm80_read_value(struct i2c_client *client, u8 reg) +{ + return i2c_smbus_read_byte_data(client, reg); +} + +static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value) +{ + return i2c_smbus_write_byte_data(client, reg, value); +} + +/* Called when we have found a new LM80. */ +static void lm80_init_client(struct i2c_client *client) +{ + /* Reset all except Watchdog values and last conversion values + This sets fan-divs to 2, among others. This makes most other + initializations unnecessary */ + lm80_write_value(client, LM80_REG_CONFIG, 0x80); + /* Set 11-bit temperature resolution */ + lm80_write_value(client, LM80_REG_RES, 0x08); + + /* Start monitoring */ + lm80_write_value(client, LM80_REG_CONFIG, 0x01); +} + +static struct lm80_data *lm80_update_device(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct lm80_data *data = i2c_get_clientdata(client); + int i; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { + dev_dbg(&client->dev, "Starting lm80 update\n"); + for (i = 0; i <= 6; i++) { + data->in[i] = + lm80_read_value(client, LM80_REG_IN(i)); + data->in_min[i] = + lm80_read_value(client, LM80_REG_IN_MIN(i)); + data->in_max[i] = + lm80_read_value(client, LM80_REG_IN_MAX(i)); + } + data->fan[0] = lm80_read_value(client, LM80_REG_FAN1); + data->fan_min[0] = + lm80_read_value(client, LM80_REG_FAN_MIN(1)); + data->fan[1] = lm80_read_value(client, LM80_REG_FAN2); + data->fan_min[1] = + lm80_read_value(client, LM80_REG_FAN_MIN(2)); + + data->temp = + (lm80_read_value(client, LM80_REG_TEMP) << 8) | + (lm80_read_value(client, LM80_REG_RES) & 0xf0); + data->temp_os_max = + lm80_read_value(client, LM80_REG_TEMP_OS_MAX); + data->temp_os_hyst = + lm80_read_value(client, LM80_REG_TEMP_OS_HYST); + data->temp_hot_max = + lm80_read_value(client, LM80_REG_TEMP_HOT_MAX); + data->temp_hot_hyst = + lm80_read_value(client, LM80_REG_TEMP_HOT_HYST); + + i = lm80_read_value(client, LM80_REG_FANDIV); + data->fan_div[0] = (i >> 2) & 0x03; + data->fan_div[1] = (i >> 4) & 0x03; + data->alarms = lm80_read_value(client, LM80_REG_ALARM1) + + (lm80_read_value(client, LM80_REG_ALARM2) << 8); + data->last_updated = jiffies; + data->valid = 1; + } + + mutex_unlock(&data->update_lock); + + return data; +} + +static int __init sensors_lm80_init(void) +{ + return i2c_add_driver(&lm80_driver); +} + +static void __exit sensors_lm80_exit(void) +{ + i2c_del_driver(&lm80_driver); +} + +MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and " + "Philip Edelbrock <phil@netroedge.com>"); +MODULE_DESCRIPTION("LM80 driver"); +MODULE_LICENSE("GPL"); + +module_init(sensors_lm80_init); +module_exit(sensors_lm80_exit); |