[PATCH] I2C hwmon: add hwmon sysfs class to drivers
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>
diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c
index ce2a6eb..7ef6120 100644
--- a/drivers/hwmon/adm9240.c
+++ b/drivers/hwmon/adm9240.c
@@ -47,6 +47,8 @@
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/i2c-vid.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
@@ -150,6 +152,7 @@
struct adm9240_data {
enum chips type;
struct i2c_client client;
+ struct class_device *class_dev;
struct semaphore update_lock;
char valid;
unsigned long last_updated_measure;
@@ -582,6 +585,12 @@
adm9240_init_client(new_client);
/* populate sysfs filesystem */
+ 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_in0_input);
device_create_file(&new_client->dev, &dev_attr_in0_min);
device_create_file(&new_client->dev, &dev_attr_in0_max);
@@ -615,6 +624,9 @@
device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
return 0;
+
+exit_detach:
+ i2c_detach_client(new_client);
exit_free:
kfree(data);
exit:
@@ -630,15 +642,18 @@
static int adm9240_detach_client(struct i2c_client *client)
{
+ struct adm9240_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;
}