[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>

1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/hwmon/atxp1.c b/drivers/hwmon/atxp1.c
index fca3fc1cef72..5f79f07a4ab8 100644
--- a/drivers/hwmon/atxp1.c
+++ b/drivers/hwmon/atxp1.c
@@ -25,6 +25,8 @@
 #include <linux/i2c.h>
 #include <linux/i2c-sensor.h>
 #include <linux/i2c-vid.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("System voltages control via Attansic ATXP1");
@@ -59,6 +61,7 @@ static struct i2c_driver atxp1_driver = {
 
 struct atxp1_data {
         struct i2c_client client;
+        struct class_device *class_dev;
         struct semaphore update_lock;
         unsigned long last_updated;
         u8 valid;
@@ -317,6 +320,12 @@ static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind)
                 goto exit_free;
         }
 
+        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_gpio1);
         device_create_file(&new_client->dev, &dev_attr_gpio2);
         device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
@@ -326,6 +335,8 @@ static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind)
 
         return 0;
 
+exit_detach:
+        i2c_detach_client(new_client);
 exit_free:
         kfree(data);
 exit:
@@ -334,14 +345,17 @@ exit:
 
 static int atxp1_detach_client(struct i2c_client * client)
 {
+        struct atxp1_data * data = i2c_get_clientdata(client);
         int err;
 
+        hwmon_device_unregister(data->class_dev);
+
         err = i2c_detach_client(client);
 
         if (err)
                 dev_err(&client->dev, "Failed to detach client.\n");
         else
-                kfree(i2c_get_clientdata(client));
+                kfree(data);
 
         return err;
 };