Commit 45a2af2f authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: debug: decode control endpoint phase too 



DWC3 can tell us which phase of a setup transfer
we're getting into. Let's decode it from the event
to make it easier to debug.

Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 799e9dc8

drivers/usb/dwc3/core.h

+1 −0
Original line number Diff line number Diff line
@@ -1041,6 +1041,7 @@ struct dwc3_event_depevt { 
/* Control-only Status */

#define DEPEVT_STATUS_CONTROL_DATA	1

#define DEPEVT_STATUS_CONTROL_STATUS	2

#define DEPEVT_STATUS_CONTROL_PHASE(n)	((n) & 3)



/* In response to Start Transfer */

#define DEPEVT_TRANSFER_NO_RESOURCE	1

drivers/usb/dwc3/debug.h

+13 −0
Original line number Diff line number Diff line
@@ -207,6 +207,19 @@ dwc3_ep_event_string(const struct dwc3_event_depevt *event) 
		strcat(str, "Transfer Not Ready");

		status = event->status & DEPEVT_STATUS_TRANSFER_ACTIVE;

		strcat(str, status ? " (Active)" : " (Not Active)");



		/* Control Endpoints */

		if (epnum <= 1) {

			int phase = DEPEVT_STATUS_CONTROL_PHASE(event->status);



			switch (phase) {

			case DEPEVT_STATUS_CONTROL_DATA:

				strcat(str, " [Data Phase]");

				break;

			case DEPEVT_STATUS_CONTROL_STATUS:

				strcat(str, " [Status Phase]");

			}

		}

		break;

	case DWC3_DEPEVT_RXTXFIFOEVT:

		strcat(str, "FIFO");