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Diffstat (limited to 'drivers/hwmon/ds1621.c')
-rw-r--r--drivers/hwmon/ds1621.c93
1 files changed, 45 insertions, 48 deletions
diff --git a/drivers/hwmon/ds1621.c b/drivers/hwmon/ds1621.c
index ef1ac996752e..f647a3307ebc 100644
--- a/drivers/hwmon/ds1621.c
+++ b/drivers/hwmon/ds1621.c
@@ -1,25 +1,25 @@
/*
- ds1621.c - Part of lm_sensors, Linux kernel modules for hardware
- monitoring
- Christian W. Zuckschwerdt <zany@triq.net> 2000-11-23
- based on lm75.c by Frodo Looijaard <frodol@dds.nl>
- Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with
- the help of Jean Delvare <khali@linux-fr.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.
-*/
+ * ds1621.c - Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ * Christian W. Zuckschwerdt <zany@triq.net> 2000-11-23
+ * based on lm75.c by Frodo Looijaard <frodol@dds.nl>
+ * Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with
+ * the help of Jean Delvare <khali@linux-fr.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>
@@ -67,7 +67,7 @@ static const u8 DS1621_REG_TEMP[3] = {
/* Conversions */
#define ALARMS_FROM_REG(val) ((val) & \
- (DS1621_ALARM_TEMP_HIGH | DS1621_ALARM_TEMP_LOW))
+ (DS1621_ALARM_TEMP_HIGH | DS1621_ALARM_TEMP_LOW))
/* Each client has this additional data */
struct ds1621_data {
@@ -93,10 +93,10 @@ static void ds1621_init_client(struct i2c_client *client)
new_conf &= ~DS1621_REG_CONFIG_POLARITY;
else if (polarity == 1)
new_conf |= DS1621_REG_CONFIG_POLARITY;
-
+
if (conf != new_conf)
i2c_smbus_write_byte_data(client, DS1621_REG_CONF, new_conf);
-
+
/* start conversion */
i2c_smbus_write_byte(client, DS1621_COM_START);
}
@@ -155,10 +155,15 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct i2c_client *client = to_i2c_client(dev);
struct ds1621_data *data = i2c_get_clientdata(client);
- u16 val = LM75_TEMP_TO_REG(simple_strtol(buf, NULL, 10));
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
mutex_lock(&data->update_lock);
- data->temp[attr->index] = val;
+ data->temp[attr->index] = LM75_TEMP_TO_REG(val);
i2c_smbus_write_word_swapped(client, DS1621_REG_TEMP[attr->index],
data->temp[attr->index]);
mutex_unlock(&data->update_lock);
@@ -212,14 +217,17 @@ static int ds1621_detect(struct i2c_client *client,
int conf, temp;
int i;
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA
- | I2C_FUNC_SMBUS_WORD_DATA
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA
+ | I2C_FUNC_SMBUS_WORD_DATA
| I2C_FUNC_SMBUS_WRITE_BYTE))
return -ENODEV;
- /* Now, we do the remaining detection. It is lousy. */
- /* The NVB bit should be low if no EEPROM write has been requested
- during the latest 10ms, which is highly improbable in our case. */
+ /*
+ * Now, we do the remaining detection. It is lousy.
+ *
+ * The NVB bit should be low if no EEPROM write has been requested
+ * during the latest 10ms, which is highly improbable in our case.
+ */
conf = i2c_smbus_read_byte_data(client, DS1621_REG_CONF);
if (conf < 0 || conf & DS1621_REG_CONFIG_NVB)
return -ENODEV;
@@ -254,7 +262,8 @@ static int ds1621_probe(struct i2c_client *client,
ds1621_init_client(client);
/* Register sysfs hooks */
- if ((err = sysfs_create_group(&client->dev.kobj, &ds1621_group)))
+ err = sysfs_create_group(&client->dev.kobj, &ds1621_group);
+ if (err)
goto exit_free;
data->hwmon_dev = hwmon_device_register(&client->dev);
@@ -265,11 +274,11 @@ static int ds1621_probe(struct i2c_client *client,
return 0;
- exit_remove_files:
+ exit_remove_files:
sysfs_remove_group(&client->dev.kobj, &ds1621_group);
- exit_free:
+ exit_free:
kfree(data);
- exit:
+ exit:
return err;
}
@@ -305,20 +314,8 @@ static struct i2c_driver ds1621_driver = {
.address_list = normal_i2c,
};
-static int __init ds1621_init(void)
-{
- return i2c_add_driver(&ds1621_driver);
-}
-
-static void __exit ds1621_exit(void)
-{
- i2c_del_driver(&ds1621_driver);
-}
-
+module_i2c_driver(ds1621_driver);
MODULE_AUTHOR("Christian W. Zuckschwerdt <zany@triq.net>");
MODULE_DESCRIPTION("DS1621 driver");
MODULE_LICENSE("GPL");
-
-module_init(ds1621_init);
-module_exit(ds1621_exit);