int usb_add_function(struct usb_configuration *, struct usb_function *);
+int usb_function_deactivate(struct usb_function *);
+int usb_function_activate(struct usb_function *);
+
int usb_interface_id(struct usb_configuration *, struct usb_function *);
/**
* value; it should return zero on successful initialization.
* @unbind: Reverses @bind(); called as a side effect of unregistering
* this driver.
+ * @suspend: Notifies when the host stops sending USB traffic,
+ * after function notifications
+ * @resume: Notifies configuration when the host restarts USB traffic,
+ * before function notifications
*
* Devices default to reporting self powered operation. Devices which rely
* on bus powered operation should report this in their @bind() method.
int (*bind)(struct usb_composite_dev *);
int (*unbind)(struct usb_composite_dev *);
+
+ /* global suspend hooks */
+ void (*suspend)(struct usb_composite_dev *);
+ void (*resume)(struct usb_composite_dev *);
};
extern int usb_composite_register(struct usb_composite_driver *);
struct usb_composite_driver *driver;
u8 next_string_id;
- spinlock_t lock;
+ /* the gadget driver won't enable the data pullup
+ * while the deactivation count is nonzero.
+ */
+ unsigned deactivations;
- /* REVISIT use and existence of lock ... */
+ /* protects at least deactivation count */
+ spinlock_t lock;
};
extern int usb_string_id(struct usb_composite_dev *c);