Some gadget drivers might benefit from having
separate ->disconnect and ->reset notifications.
For those gadget drivers which don't care, they
can implement only ->disconnect and UDC driver
is required to call ->disconnect case ->reset
isn't valid.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
include/linux/usb/gadget.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 9517466..57de0e8 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -781,6 +781,10 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
* when the host is disconnected. May be called in_interrupt; this
* may not sleep. Some devices can't detect disconnect, so this might
* not be called except as part of controller shutdown.
+ * @reset: Invoked from reset interrupt handler. This call may not sleep.
+ * Some gadget drivers might benefit from having a different @reset
+ * and @disconnect methods. For those which don't provide @reset,
+ * UDC driver is expected to call @disconnect.
* @unbind: Invoked when the driver is unbound from a gadget,
* usually from rmmod (after a disconnect is reported).
* Called in a context that permits sleeping.
@@ -839,6 +843,7 @@ struct usb_gadget_driver {
int (*setup)(struct usb_gadget *,
const struct usb_ctrlrequest *);
void (*disconnect)(struct usb_gadget *);
+ void (*reset)(struct usb_gadget *);
void (*suspend)(struct usb_gadget *);
void (*resume)(struct usb_gadget *);
--
1.7.12.rc2
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