http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/sysdev.h

/** * 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> #include <linux/pm.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 *, pm_message_t 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 *, pm_message_t 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_ */