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Commit 9cf81a8f authored by Jean Delvare's avatar Jean Delvare Committed by Deepak Saxena
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[PATCH] I2C: New chip driver ported: lm80 

Here is a port for the lm80 driver, which supports LM80 chips by
National Semiconductor. The port is mostly the work of Tiago Sousa,
which I reviewed and polished as necessary.
parent c219ebf0
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drivers/i2c/chips/Kconfig
View file @ 9cf81a8f
......@@ -102,6 +102,17 @@ config SENSORS_LM78
This driver can also be built as a module. If so, the module
will be called lm78.
config SENSORS_LM80
tristate "National Semiconductor LM80"
depends on I2C && EXPERIMENTAL
select I2C_SENSOR
help
If you say yes here you get support for National Semiconductor
LM80 sensor chips.
This driver can also be built as a module. If so, the module
will be called lm80.
config SENSORS_LM83
tristate "National Semiconductor LM83"
depends on I2C && EXPERIMENTAL
......
drivers/i2c/chips/Makefile
View file @ 9cf81a8f
......@@ -13,6 +13,7 @@ obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o
obj-$(CONFIG_SENSORS_IT87) += it87.o
obj-$(CONFIG_SENSORS_LM75) += lm75.o
obj-$(CONFIG_SENSORS_LM78) += lm78.o
obj-$(CONFIG_SENSORS_LM80) += lm80.o
obj-$(CONFIG_SENSORS_LM83) += lm83.o
obj-$(CONFIG_SENSORS_LM85) += lm85.o
obj-$(CONFIG_SENSORS_LM90) += lm90.o
......
drivers/i2c/chips/lm80.c 0 → 100644
View file @ 9cf81a8f
/*
* 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/config.h>
#ifdef CONFIG_I2C_DEBUG_CHIP
#define DEBUG 1
#endif
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = { I2C_CLIENT_END };
static unsigned short normal_i2c_range[] = { 0x28, 0x2f, I2C_CLIENT_END };
static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
static unsigned int normal_isa_range[] = { I2C_CLIENT_ISA_END };
/* Insmod parameters */
SENSORS_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_MIN 0x3c
#define LM80_REG_FAN2_MIN 0x3d
#define LM80_REG_FAN1 0x28
#define LM80_REG_FAN2 0x29
#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)/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 ALARMS_FROM_REG(val) (val)
#define DIV_FROM_REG(val) (1 << (val))
#define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
/*
* Client data (each client gets its own)
*/
struct lm80_data {
struct semaphore 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_attach_adapter(struct i2c_adapter *adapter);
static int lm80_detect(struct i2c_adapter *adapter, int address, int kind);
static void lm80_init_client(struct i2c_client *client);
static int lm80_detach_client(struct i2c_client *client);
static void lm80_update_client(struct i2c_client *client);
static int lm80_read_value(struct i2c_client *client, u8 reg);
static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value);
/*
* Internal variables
*/
static int lm80_id = 0;
/*
* Driver data (common to all clients)
*/
static struct i2c_driver lm80_driver = {
.owner = THIS_MODULE,
.name = "lm80",
.id = I2C_DRIVERID_LM80,
.flags = I2C_DF_NOTIFY,
.attach_adapter = lm80_attach_adapter,
.detach_client = lm80_detach_client,
};
/*
* Sysfs stuff
*/
#define show_in(suffix, value) \
static ssize_t show_in_##suffix(struct device *dev, char *buf) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm80_data *data = i2c_get_clientdata(client); \
lm80_update_client(client); \
return sprintf(buf, "%d\n", IN_FROM_REG(data->value)); \
}
show_in(min0, in_min[0]);
show_in(min1, in_min[1]);
show_in(min2, in_min[2]);
show_in(min3, in_min[3]);
show_in(min4, in_min[4]);
show_in(min5, in_min[5]);
show_in(min6, in_min[6]);
show_in(max0, in_max[0]);
show_in(max1, in_max[1]);
show_in(max2, in_max[2]);
show_in(max3, in_max[3]);
show_in(max4, in_max[4]);
show_in(max5, in_max[5]);
show_in(max6, in_max[6]);
show_in(input0, in[0]);
show_in(input1, in[1]);
show_in(input2, in[2]);
show_in(input3, in[3]);
show_in(input4, in[4]);
show_in(input5, in[5]);
show_in(input6, in[6]);
#define set_in(suffix, value, reg) \
static ssize_t set_in_##suffix(struct device *dev, 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_strtol(buf, NULL, 10); \
data->value = IN_TO_REG(val); \
lm80_write_value(client, reg, data->value); \
return count; \
}
set_in(min0, in_min[0], LM80_REG_IN_MIN(0));
set_in(min1, in_min[1], LM80_REG_IN_MIN(1));
set_in(min2, in_min[2], LM80_REG_IN_MIN(2));
set_in(min3, in_min[3], LM80_REG_IN_MIN(3));
set_in(min4, in_min[4], LM80_REG_IN_MIN(4));
set_in(min5, in_min[5], LM80_REG_IN_MIN(5));
set_in(min6, in_min[6], LM80_REG_IN_MIN(6));
set_in(max0, in_max[0], LM80_REG_IN_MAX(0));
set_in(max1, in_max[1], LM80_REG_IN_MAX(1));
set_in(max2, in_max[2], LM80_REG_IN_MAX(2));
set_in(max3, in_max[3], LM80_REG_IN_MAX(3));
set_in(max4, in_max[4], LM80_REG_IN_MAX(4));
set_in(max5, in_max[5], LM80_REG_IN_MAX(5));
set_in(max6, in_max[6], LM80_REG_IN_MAX(6));
#define show_fan(suffix, value, div) \
static ssize_t show_fan_##suffix(struct device *dev, char *buf) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm80_data *data = i2c_get_clientdata(client); \
lm80_update_client(client); \
return sprintf(buf, "%d\n", FAN_FROM_REG(data->value, \
DIV_FROM_REG(data->div))); \
}
show_fan(min1, fan_min[0], fan_div[0]);
show_fan(min2, fan_min[1], fan_div[1]);
show_fan(input1, fan[0], fan_div[0]);
show_fan(input2, fan[1], fan_div[1]);
#define show_fan_div(suffix, value) \
static ssize_t show_fan_div##suffix(struct device *dev, char *buf) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm80_data *data = i2c_get_clientdata(client); \
lm80_update_client(client); \
return sprintf(buf, "%d\n", DIV_FROM_REG(data->value)); \
}
show_fan_div(1, fan_div[0]);
show_fan_div(2, fan_div[1]);
#define set_fan(suffix, value, reg, div) \
static ssize_t set_fan_##suffix(struct device *dev, 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); \
data->value = FAN_TO_REG(val, DIV_FROM_REG(data->div)); \
lm80_write_value(client, reg, data->value); \
return count; \
}
set_fan(min1, fan_min[0], LM80_REG_FAN1_MIN, fan_div[0]);
set_fan(min2, fan_min[1], LM80_REG_FAN2_MIN, fan_div[1]);
static ssize_t show_temp_input1(struct device *dev, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm80_data *data = i2c_get_clientdata(client);
lm80_update_client(client);
return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp));
}
#define show_temp(suffix, value) \
static ssize_t show_temp_##suffix(struct device *dev, char *buf) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm80_data *data = i2c_get_clientdata(client); \
lm80_update_client(client); \
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, 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); \
data->value = TEMP_LIMIT_TO_REG(val); \
lm80_write_value(client, reg, data->value); \
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, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm80_data *data = i2c_get_clientdata(client);
lm80_update_client(client);
return sprintf(buf, "%d\n", ALARMS_FROM_REG(data->alarms));
}
static DEVICE_ATTR(in_min0, S_IWUSR | S_IRUGO, show_in_min0, set_in_min0);
static DEVICE_ATTR(in_min1, S_IWUSR | S_IRUGO, show_in_min1, set_in_min1);
static DEVICE_ATTR(in_min2, S_IWUSR | S_IRUGO, show_in_min2, set_in_min2);
static DEVICE_ATTR(in_min3, S_IWUSR | S_IRUGO, show_in_min3, set_in_min3);
static DEVICE_ATTR(in_min4, S_IWUSR | S_IRUGO, show_in_min4, set_in_min4);
static DEVICE_ATTR(in_min5, S_IWUSR | S_IRUGO, show_in_min5, set_in_min5);
static DEVICE_ATTR(in_min6, S_IWUSR | S_IRUGO, show_in_min6, set_in_min6);
static DEVICE_ATTR(in_max0, S_IWUSR | S_IRUGO, show_in_max0, set_in_max0);
static DEVICE_ATTR(in_max1, S_IWUSR | S_IRUGO, show_in_max1, set_in_max1);
static DEVICE_ATTR(in_max2, S_IWUSR | S_IRUGO, show_in_max2, set_in_max2);
static DEVICE_ATTR(in_max3, S_IWUSR | S_IRUGO, show_in_max3, set_in_max3);
static DEVICE_ATTR(in_max4, S_IWUSR | S_IRUGO, show_in_max4, set_in_max4);
static DEVICE_ATTR(in_max5, S_IWUSR | S_IRUGO, show_in_max5, set_in_max5);
static DEVICE_ATTR(in_max6, S_IWUSR | S_IRUGO, show_in_max6, set_in_max6);
static DEVICE_ATTR(in_input0, S_IRUGO, show_in_input0, NULL);
static DEVICE_ATTR(in_input1, S_IRUGO, show_in_input1, NULL);
static DEVICE_ATTR(in_input2, S_IRUGO, show_in_input2, NULL);
static DEVICE_ATTR(in_input3, S_IRUGO, show_in_input3, NULL);
static DEVICE_ATTR(in_input4, S_IRUGO, show_in_input4, NULL);
static DEVICE_ATTR(in_input5, S_IRUGO, show_in_input5, NULL);
static DEVICE_ATTR(in_input6, S_IRUGO, show_in_input6, NULL);
static DEVICE_ATTR(fan_min1, S_IWUSR | S_IRUGO, show_fan_min1,
set_fan_min1);
static DEVICE_ATTR(fan_min2, S_IWUSR | S_IRUGO, show_fan_min2,
set_fan_min2);
static DEVICE_ATTR(fan_input1, S_IRUGO, show_fan_input1, NULL);
static DEVICE_ATTR(fan_input2, S_IRUGO, show_fan_input2, NULL);
static DEVICE_ATTR(fan_div1, S_IRUGO, show_fan_div1, NULL);
static DEVICE_ATTR(fan_div2, S_IRUGO, show_fan_div2, NULL);
static DEVICE_ATTR(temp_input1, S_IRUGO, show_temp_input1, NULL);
static DEVICE_ATTR(temp_max1, S_IWUSR | S_IRUGO, show_temp_hot_max,
set_temp_hot_max);
static DEVICE_ATTR(temp_max1_hyst, S_IWUSR | S_IRUGO, show_temp_hot_hyst,
set_temp_hot_hyst);
static DEVICE_ATTR(temp_crit1, S_IWUSR | S_IRUGO, show_temp_os_max,
set_temp_os_max);
static DEVICE_ATTR(temp_crit1_hyst, S_IWUSR | S_IRUGO, show_temp_os_hyst,
set_temp_os_hyst);
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
/*
* Real code
*/
static int lm80_attach_adapter(struct i2c_adapter *adapter)
{
if (!(adapter->class & I2C_ADAP_CLASS_SMBUS))
return 0;
return i2c_detect(adapter, &addr_data, lm80_detect);
}
int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
{
int i, cur;
struct i2c_client *new_client;
struct lm80_data *data;
int err = 0;
const char *name;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
goto exit;
/* OK. For now, we presume we have a valid client. We now create the
client structure, even though we cannot fill it completely yet.
But it allows us to access lm80_{read,write}_value. */
if (!(new_client = kmalloc(sizeof(struct i2c_client) +
sizeof(struct lm80_data), GFP_KERNEL))) {
err = -ENOMEM;
goto exit;
}
memset(new_client, 0x00, sizeof(struct i2c_client) +
sizeof(struct lm80_data));
data = (struct lm80_data *) (new_client + 1);
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
new_client->driver = &lm80_driver;
new_client->flags = 0;
/* Now, we do the remaining detection. It is lousy. */
if (lm80_read_value(new_client, LM80_REG_ALARM2) & 0xc0)
goto error_free;
for (i = 0x2a; i <= 0x3d; i++) {
cur = i2c_smbus_read_byte_data(new_client, i);
if ((i2c_smbus_read_byte_data(new_client, i + 0x40) != cur)
|| (i2c_smbus_read_byte_data(new_client, i + 0x80) != cur)
|| (i2c_smbus_read_byte_data(new_client, i + 0xc0) != cur))
goto error_free;
}
/* Determine the chip type - only one kind supported! */
kind = lm80;
name = "lm80";
/* Fill in the remaining client fields and put it into the global list */
strlcpy(new_client->name, name, I2C_NAME_SIZE);
new_client->id = lm80_id++;
data->valid = 0;
init_MUTEX(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
goto error_free;
/* Initialize the LM80 chip */
lm80_init_client(new_client);
/* Register sysfs hooks */
device_create_file(&new_client->dev, &dev_attr_in_min0);
device_create_file(&new_client->dev, &dev_attr_in_min1);
device_create_file(&new_client->dev, &dev_attr_in_min2);
device_create_file(&new_client->dev, &dev_attr_in_min3);
device_create_file(&new_client->dev, &dev_attr_in_min4);
device_create_file(&new_client->dev, &dev_attr_in_min5);
device_create_file(&new_client->dev, &dev_attr_in_min6);
device_create_file(&new_client->dev, &dev_attr_in_max0);
device_create_file(&new_client->dev, &dev_attr_in_max1);
device_create_file(&new_client->dev, &dev_attr_in_max2);
device_create_file(&new_client->dev, &dev_attr_in_max3);
device_create_file(&new_client->dev, &dev_attr_in_max4);
device_create_file(&new_client->dev, &dev_attr_in_max5);
device_create_file(&new_client->dev, &dev_attr_in_max6);
device_create_file(&new_client->dev, &dev_attr_in_input0);
device_create_file(&new_client->dev, &dev_attr_in_input1);
device_create_file(&new_client->dev, &dev_attr_in_input2);
device_create_file(&new_client->dev, &dev_attr_in_input3);
device_create_file(&new_client->dev, &dev_attr_in_input4);
device_create_file(&new_client->dev, &dev_attr_in_input5);
device_create_file(&new_client->dev, &dev_attr_in_input6);
device_create_file(&new_client->dev, &dev_attr_fan_min1);
device_create_file(&new_client->dev, &dev_attr_fan_min2);
device_create_file(&new_client->dev, &dev_attr_fan_input1);
device_create_file(&new_client->dev, &dev_attr_fan_input2);
device_create_file(&new_client->dev, &dev_attr_fan_div1);
device_create_file(&new_client->dev, &dev_attr_fan_div2);
device_create_file(&new_client->dev, &dev_attr_temp_input1);
device_create_file(&new_client->dev, &dev_attr_temp_max1);
device_create_file(&new_client->dev, &dev_attr_temp_max1_hyst);
device_create_file(&new_client->dev, &dev_attr_temp_crit1);
device_create_file(&new_client->dev, &dev_attr_temp_crit1_hyst);
device_create_file(&new_client->dev, &dev_attr_alarms);
return 0;
error_free:
kfree(new_client);
exit:
return err;
}
static int lm80_detach_client(struct i2c_client *client)
{
int err;
if ((err = i2c_detach_client(client))) {
dev_err(&client->dev, "Client deregistration failed, "
"client not detached.\n");
return err;
}
kfree(client);
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 void lm80_update_client(struct i2c_client *client)
{
struct lm80_data *data = i2c_get_clientdata(client);
int i;
down(&data->update_lock);
if ((jiffies - data->last_updated > 2 * HZ) ||
(jiffies < data->last_updated) || !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_FAN1_MIN);
data->fan[1] = lm80_read_value(client, LM80_REG_FAN2);
data->fan_min[1] =
lm80_read_value(client, LM80_REG_FAN2_MIN);
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;
}
up(&data->update_lock);
}
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);
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