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usb: dwc3: debug: decode control endpoint phase too

Browse source 
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: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2016-09-26 12:54:04 +03:00
parent 799e9dc829
commit 45a2af2f2b
2 changed files with 14 additions and 0 deletions
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1
drivers/usb/dwc3/core.h
View file

@ -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

13
drivers/usb/dwc3/debug.h
View file

@ -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");