dwc3: gadget: Add support for transfer complete events counting
Add counting of USB transfers completion events/interrupts
so that it can be used to determine USB transfers or BUS usage.
This is a simple approach which gives reasonable accuracy to
avoid counting actual bytes that got transferred over USB.
CRs-fixed: 687220
Change-Id: Ib06e916ef1b3a7dbf0b3c720d306e922043a7f33
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 4be032a..0f86879 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2113,6 +2113,8 @@
break;
} while (1);
+ dwc->gadget.xfer_isr_count++;
+
if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
list_empty(&dep->req_queued)) {
if (list_empty(&dep->request_list))
@@ -2276,6 +2278,7 @@
dwc->gadget_driver->disconnect(&dwc->gadget);
spin_lock(&dwc->lock);
}
+ dwc->gadget.xfer_isr_count = 0;
}
static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum)