driver model: convert devices to use kobjects and sysfs.

- Define a device subsystem and register it on startup. 
- Fill it in with fields converted from driverfs-style fields.
- Convert device_{create,remove}_file() to create files in sysfs. 
- Add default device attributes to device subsystem.
- Make sure devices get proper kobject familial pointers and that the kobjects
  are registered. 
 

4 files changed, 12 insertions, 13 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 2e0948e96d68..ca7bf83886ed 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -29,6 +29,7 @@
 #include <linux/list.h>
 #include <linux/sched.h>
 #include <linux/driverfs_fs.h>
+#include <linux/kobject.h>
 
 #define DEVICE_NAME_SIZE	80
 #define DEVICE_ID_SIZE		32
@@ -275,6 +276,7 @@ struct device {
 	struct list_head intf_list;
 	struct device 	* parent;
 
+	struct kobject kobj;
 	char	name[DEVICE_NAME_SIZE];	/* descriptive ascii string */
 	char	bus_id[BUS_ID_SIZE];	/* position on parent bus */
 
diff --git a/include/linux/driverfs_fs.h b/include/linux/driverfs_fs.h
index b4270e947a1e..af7dc715855d 100644
--- a/include/linux/driverfs_fs.h
+++ b/include/linux/driverfs_fs.h
@@ -26,6 +26,8 @@
 #ifndef _DRIVER_FS_H_
 #define _DRIVER_FS_H_
 
+#include <linux/sysfs.h>
+
 struct driver_dir_entry;
 struct attribute;
 
@@ -43,11 +45,6 @@ struct driver_dir_entry {
 	struct driverfs_ops	* ops;
 };
 
-struct attribute {
-	char			* name;
-	mode_t			mode;
-};
-
 extern int
 driverfs_create_dir(struct driver_dir_entry *, struct driver_dir_entry *);
 
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index d2f0629a6189..40de16d0a227 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -12,8 +12,10 @@
 #include <linux/rwsem.h>
 #include <asm/atomic.h>
 
+#define KOBJ_NAME_LEN	16
+
 struct kobject {
-	char			name[16];
+	char			name[KOBJ_NAME_LEN];
 	atomic_t		refcount;
 	struct list_head	entry;
 	struct kobject		* parent;
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 7a46c9f0c308..29c3eb8d2c9e 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -9,20 +9,18 @@
 #ifndef _SYSFS_H_
 #define _SYSFS_H_
 
-struct driver_dir_entry;
-struct attribute;
 struct kobject;
 
-struct sysfs_ops {
-	ssize_t	(*show)(struct kobject *, struct attribute *,char *, size_t, loff_t);
-	ssize_t	(*store)(struct kobject *,struct attribute *,const char *, size_t, loff_t);
-};
-
 struct attribute {
 	char			* name;
 	mode_t			mode;
 };
 
+struct sysfs_ops {
+	ssize_t	(*show)(struct kobject *, struct attribute *,char *, size_t, loff_t);
+	ssize_t	(*store)(struct kobject *,struct attribute *,const char *, size_t, loff_t);
+};
+
 extern int
 sysfs_create_dir(struct kobject *);