Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/linux/sysdev.h b/include/linux/sysdev.h
new file mode 100644
index 0000000..635db1d
--- /dev/null
+++ b/include/linux/sysdev.h
@@ -0,0 +1,94 @@
+/**
+ * System devices follow a slightly different driver model.
+ * They don't need to do dynammic driver binding, can't be probed,
+ * and don't reside on any type of peripheral bus.
+ * So, we represent and treat them a little differently.
+ *
+ * We still have a notion of a driver for a system device, because we still
+ * want to perform basic operations on these devices.
+ *
+ * We also support auxillary drivers binding to devices of a certain class.
+ *
+ * This allows configurable drivers to register themselves for devices of
+ * a certain type. And, it allows class definitions to reside in generic
+ * code while arch-specific code can register specific drivers.
+ *
+ * Auxillary drivers registered with a NULL cls are registered as drivers
+ * for all system devices, and get notification calls for each device.
+ */
+
+
+#ifndef _SYSDEV_H_
+#define _SYSDEV_H_
+
+#include <linux/kobject.h>
+
+
+struct sys_device;
+
+struct sysdev_class {
+ struct list_head drivers;
+
+ /* Default operations for these types of devices */
+ int (*shutdown)(struct sys_device *);
+ int (*suspend)(struct sys_device *, u32 state);
+ int (*resume)(struct sys_device *);
+ struct kset kset;
+};
+
+
+extern int sysdev_class_register(struct sysdev_class *);
+extern void sysdev_class_unregister(struct sysdev_class *);
+
+
+/**
+ * Auxillary system device drivers.
+ */
+
+struct sysdev_driver {
+ struct list_head entry;
+ int (*add)(struct sys_device *);
+ int (*remove)(struct sys_device *);
+ int (*shutdown)(struct sys_device *);
+ int (*suspend)(struct sys_device *, u32 state);
+ int (*resume)(struct sys_device *);
+};
+
+
+extern int sysdev_driver_register(struct sysdev_class *, struct sysdev_driver *);
+extern void sysdev_driver_unregister(struct sysdev_class *, struct sysdev_driver *);
+
+
+/**
+ * sys_devices can be simplified a lot from regular devices, because they're
+ * simply not as versatile.
+ */
+
+struct sys_device {
+ u32 id;
+ struct sysdev_class * cls;
+ struct kobject kobj;
+};
+
+extern int sysdev_register(struct sys_device *);
+extern void sysdev_unregister(struct sys_device *);
+
+
+struct sysdev_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct sys_device *, char *);
+ ssize_t (*store)(struct sys_device *, const char *, size_t);
+};
+
+
+#define SYSDEV_ATTR(_name,_mode,_show,_store) \
+struct sysdev_attribute attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .show = _show, \
+ .store = _store, \
+};
+
+extern int sysdev_create_file(struct sys_device *, struct sysdev_attribute *);
+extern void sysdev_remove_file(struct sys_device *, struct sysdev_attribute *);
+
+#endif /* _SYSDEV_H_ */