1 /* Functions local to drivers/usb/core/ */ 2 3 extern int usb_create_sysfs_dev_files (struct usb_device *dev); 4 extern void usb_remove_sysfs_dev_files (struct usb_device *dev); 5 extern int usb_create_sysfs_intf_files (struct usb_interface *intf); 6 extern void usb_remove_sysfs_intf_files (struct usb_interface *intf); 7 extern int usb_create_ep_files(struct device *parent, struct usb_host_endpoint *endpoint, 8 struct usb_device *udev); 9 extern void usb_remove_ep_files(struct usb_host_endpoint *endpoint); 10 11 extern void usb_disable_endpoint (struct usb_device *dev, unsigned int epaddr); 12 extern void usb_disable_interface (struct usb_device *dev, 13 struct usb_interface *intf); 14 extern void usb_release_interface_cache(struct kref *ref); 15 extern void usb_disable_device (struct usb_device *dev, int skip_ep0); 16 extern void usb_detect_quirks(struct usb_device *udev); 17 18 extern int usb_get_device_descriptor(struct usb_device *dev, 19 unsigned int size); 20 extern char *usb_cache_string(struct usb_device *udev, int index); 21 extern int usb_set_configuration(struct usb_device *dev, int configuration); 22 23 extern void usb_kick_khubd(struct usb_device *dev); 24 extern void usb_resume_root_hub(struct usb_device *dev); 25 extern int usb_match_device(struct usb_device *dev, 26 const struct usb_device_id *id); 27 28 extern int usb_hub_init(void); 29 extern void usb_hub_cleanup(void); 30 extern int usb_major_init(void); 31 extern void usb_major_cleanup(void); 32 extern int usb_host_init(void); 33 extern void usb_host_cleanup(void); 34 35 #ifdef CONFIG_PM 36 37 extern int usb_suspend_both(struct usb_device *udev, pm_message_t msg); 38 extern int usb_resume_both(struct usb_device *udev); 39 extern int usb_port_suspend(struct usb_device *dev); 40 extern int usb_port_resume(struct usb_device *dev); 41 42 static inline void usb_pm_lock(struct usb_device *udev) 43 { 44 mutex_lock_nested(&udev->pm_mutex, udev->level); 45 } 46 47 static inline void usb_pm_unlock(struct usb_device *udev) 48 { 49 mutex_unlock(&udev->pm_mutex); 50 } 51 52 #else 53 54 #define usb_suspend_both(udev, msg) 0 55 static inline int usb_resume_both(struct usb_device *udev) 56 { 57 return 0; 58 } 59 #define usb_port_suspend(dev) 0 60 #define usb_port_resume(dev) 0 61 static inline void usb_pm_lock(struct usb_device *udev) {} 62 static inline void usb_pm_unlock(struct usb_device *udev) {} 63 64 #endif 65 66 #ifdef CONFIG_USB_SUSPEND 67 68 extern void usb_autosuspend_device(struct usb_device *udev); 69 extern void usb_try_autosuspend_device(struct usb_device *udev); 70 extern int usb_autoresume_device(struct usb_device *udev); 71 72 #else 73 74 #define usb_autosuspend_device(udev) do {} while (0) 75 #define usb_try_autosuspend_device(udev) do {} while (0) 76 static inline int usb_autoresume_device(struct usb_device *udev) 77 { 78 return 0; 79 } 80 81 #endif 82 83 extern struct workqueue_struct *ksuspend_usb_wq; 84 extern struct bus_type usb_bus_type; 85 extern struct usb_device_driver usb_generic_driver; 86 87 /* Here's how we tell apart devices and interfaces. Luckily there's 88 * no such thing as a platform USB device, so we can steal the use 89 * of the platform_data field. */ 90 91 static inline int is_usb_device(const struct device *dev) 92 { 93 return dev->platform_data == &usb_generic_driver; 94 } 95 96 /* Do the same for device drivers and interface drivers. */ 97 98 static inline int is_usb_device_driver(struct device_driver *drv) 99 { 100 return container_of(drv, struct usbdrv_wrap, driver)-> 101 for_devices; 102 } 103 104 /* Interfaces and their "power state" are owned by usbcore */ 105 106 static inline void mark_active(struct usb_interface *f) 107 { 108 f->is_active = 1; 109 } 110 111 static inline void mark_quiesced(struct usb_interface *f) 112 { 113 f->is_active = 0; 114 } 115 116 static inline int is_active(const struct usb_interface *f) 117 { 118 return f->is_active; 119 } 120 121 122 /* for labeling diagnostics */ 123 extern const char *usbcore_name; 124 125 /* usbfs stuff */ 126 extern struct mutex usbfs_mutex; 127 extern struct usb_driver usbfs_driver; 128 extern const struct file_operations usbfs_devices_fops; 129 extern const struct file_operations usbfs_device_file_operations; 130 extern void usbfs_conn_disc_event(void); 131 132 extern int usbdev_init(void); 133 extern void usbdev_cleanup(void); 134 135 struct dev_state { 136 struct list_head list; /* state list */ 137 struct usb_device *dev; 138 struct file *file; 139 spinlock_t lock; /* protects the async urb lists */ 140 struct list_head async_pending; 141 struct list_head async_completed; 142 wait_queue_head_t wait; /* wake up if a request completed */ 143 unsigned int discsignr; 144 struct pid *disc_pid; 145 uid_t disc_uid, disc_euid; 146 void __user *disccontext; 147 unsigned long ifclaimed; 148 u32 secid; 149 }; 150 151 /* internal notify stuff */ 152 extern void usb_notify_add_device(struct usb_device *udev); 153 extern void usb_notify_remove_device(struct usb_device *udev); 154 extern void usb_notify_add_bus(struct usb_bus *ubus); 155 extern void usb_notify_remove_bus(struct usb_bus *ubus); 156 157