drivers/base/base.h

   1
   2 /**
   3  * struct bus_type_private - structure to hold the private to the driver core portions of the bus_type structure.
   4  *
   5  * @subsys - the struct kset that defines this bus.  This is the main kobject
   6  * @drivers_kset - the list of drivers associated with this bus
   7  * @devices_kset - the list of devices associated with this bus
   8  * @klist_devices - the klist to iterate over the @devices_kset
   9  * @klist_drivers - the klist to iterate over the @drivers_kset
  10  * @bus_notifier - the bus notifier list for anything that cares about things
  11  * on this bus.
  12  * @bus - pointer back to the struct bus_type that this structure is associated
  13  * with.
  14  *
  15  * This structure is the one that is the actual kobject allowing struct
  16  * bus_type to be statically allocated safely.  Nothing outside of the driver
  17  * core should ever touch these fields.
  18  */
  19 struct bus_type_private {
  20         struct kset subsys;
  21         struct kset *drivers_kset;
  22         struct kset *devices_kset;
  23         struct klist klist_devices;
  24         struct klist klist_drivers;
  25         struct blocking_notifier_head bus_notifier;
  26         unsigned int drivers_autoprobe:1;
  27         struct bus_type *bus;
  28 };
  29
  30 struct driver_private {
  31         struct kobject kobj;
  32         struct klist klist_devices;
  33         struct klist_node knode_bus;
  34         struct module_kobject *mkobj;
  35         struct device_driver *driver;
  36 };
  37 #define to_driver(obj) container_of(obj, struct driver_private, kobj)
  38
  39 /* initialisation functions */
  40 extern int devices_init(void);
  41 extern int buses_init(void);
  42 extern int classes_init(void);
  43 extern int firmware_init(void);
  44 #ifdef CONFIG_SYS_HYPERVISOR
  45 extern int hypervisor_init(void);
  46 #else
  47 static inline int hypervisor_init(void) { return 0; }
  48 #endif
  49 extern int platform_bus_init(void);
  50 extern int system_bus_init(void);
  51 extern int cpu_dev_init(void);
  52
  53 extern int bus_add_device(struct device *dev);
  54 extern void bus_attach_device(struct device *dev);
  55 extern void bus_remove_device(struct device *dev);
  56
  57 extern int bus_add_driver(struct device_driver *drv);
  58 extern void bus_remove_driver(struct device_driver *drv);
  59
  60 extern void driver_detach(struct device_driver *drv);
  61 extern int driver_probe_device(struct device_driver *drv, struct device *dev);
  62
  63 extern void sysdev_shutdown(void);
  64 extern int sysdev_suspend(pm_message_t state);
  65 extern int sysdev_resume(void);
  66
  67 static inline struct class_device *to_class_dev(struct kobject *obj)
  68 {
  69         return container_of(obj, struct class_device, kobj);
  70 }
  71
  72 static inline
  73 struct class_device_attribute *to_class_dev_attr(struct attribute *_attr)
  74 {
  75         return container_of(_attr, struct class_device_attribute, attr);
  76 }
  77
  78 extern char *make_class_name(const char *name, struct kobject *kobj);
  79
  80 extern int devres_release_all(struct device *dev);
  81
  82 extern struct kset *devices_kset;
  83
  84 #if defined(CONFIG_MODULES) && defined(CONFIG_SYSFS)
  85 extern void module_add_driver(struct module *mod, struct device_driver *drv);
  86 extern void module_remove_driver(struct device_driver *drv);
  87 #else
  88 static inline void module_add_driver(struct module *mod,
  89                                      struct device_driver *drv) { }
  90 static inline void module_remove_driver(struct device_driver *drv) { }
  91 #endif