@@ -282,6 +282,9 @@ struct usb_ep *usb_ep_autoconfig(
return ep;
}
+ if (gadget->ops->match_ep)
+ ep = gadget->ops->match_ep(gadget, desc, NULL);
+
/* Second, look at endpoints until an unclaimed one looks usable */
list_for_each_entry(ep, &gadget->ep_list, ep_list) {
if (ep_matches(gadget, ep, desc))
@@ -129,11 +129,30 @@ struct usb_ep_ops {
void (*fifo_flush) (struct usb_ep *ep);
};
+/**
+ * struct usb_ep_caps - endpoint capabilities description
+ * @type_control:Endpoint supports control type (reserved for ep0).
+ * @type_iso:Endpoint supports isochronous transfers.
+ * @type_bulk:Endpoint supports bulk transfers.
+ * @type_int:Endpoint supports interrupt transfers.
+ * @dir_in:Endpoint supports IN direction.
+ * @dir_out:Endpoint supports OUT direction.
+ */
+struct usb_ep_caps {
+ unsigned type_control:1;
+ unsigned type_iso:1;
+ unsigned type_bulk:1;
+ unsigned type_int:1;
+ unsigned dir_in:1;
+ unsigned dir_out:1;
+};
+
/**
* struct usb_ep - device side representation of USB endpoint
* @name:identifier for the endpoint, such as "ep-a" or "ep9in-bulk"
* @ops: Function pointers used to access hardware-specific operations.
* @ep_list:the gadget's ep_list holds all of its endpoints
+ * @caps:The structure describing types and directions supported by endoint.
* @maxpacket:The maximum packet size used on this endpoint. The initial
* value can sometimes be reduced (hardware allowing), according to
* the endpoint descriptor used to configure the endpoint.
@@ -159,6 +178,7 @@ struct usb_ep {
const char *name;
const struct usb_ep_ops *ops;
struct list_head ep_list;
+ struct usb_ep_caps caps;
unsigned maxpacket:16;
unsigned maxpacket_limit:16;
unsigned max_streams:16;
@@ -447,6 +467,9 @@ struct usb_gadget_ops {
int (*udc_start)(struct usb_gadget *,
struct usb_gadget_driver *);
int (*udc_stop)(struct usb_gadget *);
+ struct usb_ep *(*match_ep)(struct usb_gadget *,
+ struct usb_endpoint_descriptor *,
+ struct usb_ss_ep_comp_descriptor *);
};
/**
Add match_ep() op to usb_gadget_ops similar to Linux kernel which is useful in finding a suitable ep match for the function driver. This will avoid adding more gadget_is_xxx() handling code to usb_ep_autoconfig(). Also sync usb_ep_caps struct thats is usually used in the match_ep() callback by the gadget controller driver Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> --- drivers/usb/gadget/epautoconf.c | 3 +++ include/linux/usb/gadget.h | 23 +++++++++++++++++++++++ 2 files changed, 26 insertions(+)