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[PATCH] I2C hwmon: add hwmon sysfs class to drivers

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This patch modifies sensors chip drivers to make use of the new
sysfs class "hwmon".

Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Mark M. Hoffman
2005-07-15 21:39:18 -04:00
committed by Greg Kroah-Hartman
parent 1236441f38
commit 943b0830ce
33 changed files with 522 additions and 53 deletions
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16
drivers/hwmon/ds1621.c
View File

@@ -27,6 +27,8 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/hwmon.h>
#include <linux/err.h>
#include "lm75.h"
/* Addresses to scan */
@@ -71,6 +73,7 @@ MODULE_PARM_DESC(polarity, "Output's polarity: 0 = active high, 1 = active low")
/* Each client has this additional data */
struct ds1621_data {
struct i2c_client client;
struct class_device *class_dev;
struct semaphore update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
@@ -250,6 +253,12 @@ int ds1621_detect(struct i2c_adapter *adapter, int address,
ds1621_init_client(new_client);
/* Register sysfs hooks */
data->class_dev = hwmon_device_register(&new_client->dev);
if (IS_ERR(data->class_dev)) {
err = PTR_ERR(data->class_dev);
goto exit_detach;
}
device_create_file(&new_client->dev, &dev_attr_alarms);
device_create_file(&new_client->dev, &dev_attr_temp1_input);
device_create_file(&new_client->dev, &dev_attr_temp1_min);
@@ -259,6 +268,8 @@ int ds1621_detect(struct i2c_adapter *adapter, int address,
/* OK, this is not exactly good programming practice, usually. But it is
very code-efficient in this case. */
exit_detach:
i2c_detach_client(new_client);
exit_free:
kfree(data);
exit:
@@ -267,15 +278,18 @@ int ds1621_detect(struct i2c_adapter *adapter, int address,
static int ds1621_detach_client(struct i2c_client *client)
{
struct ds1621_data *data = i2c_get_clientdata(client);
int err;
hwmon_device_unregister(data->class_dev);
if ((err = i2c_detach_client(client))) {
dev_err(&client->dev, "Client deregistration failed, "
"client not detached.\n");
return err;
}
kfree(i2c_get_clientdata(client));
kfree(data);
return 0;
}