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usb: dwc3: gadget: Refactor TRB completion handler 

To prepare for handling of XferComplete event, let's refactor and split
up dwc3_gadget_endpoint_transfer_in_progress() to handle TRBs completion
for different events. The handling of TRBs completion will be the same,
but the status of XferComplete event is different than XferInProgress.
No functional change in this commit.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Thinh Nguyen 2020-05-05 19:46:39 -07:00 committed by Felipe Balbi
parent b6842d4938
commit 2e6e9e4b2e
1 changed files with 26 additions and 19 deletions
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45
drivers/usb/dwc3/gadget.c
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@ -2654,34 +2654,22 @@ static void dwc3_gadget_endpoint_frame_from_event(struct dwc3_ep *dep,
dep->frame_number = event->parameters;
}
static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,
const struct dwc3_event_depevt *event)
static bool dwc3_gadget_endpoint_trbs_complete(struct dwc3_ep *dep,
const struct dwc3_event_depevt *event, int status)
{
struct dwc3 *dwc = dep->dwc;
unsigned status = 0;
bool stop = false;
dwc3_gadget_endpoint_frame_from_event(dep, event);
if (event->status & DEPEVT_STATUS_BUSERR)
status = -ECONNRESET;
if (event->status & DEPEVT_STATUS_MISSED_ISOC) {
status = -EXDEV;
if (list_empty(&dep->started_list))
stop = true;
}
bool no_started_trb = true;
dwc3_gadget_ep_cleanup_completed_requests(dep, event, status);
if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)
goto out;
if (stop)
if (status == -EXDEV && list_empty(&dep->started_list))
dwc3_stop_active_transfer(dep, true, true);
else if (dwc3_gadget_ep_should_continue(dep))
__dwc3_gadget_kick_transfer(dep);
if (__dwc3_gadget_kick_transfer(dep) == 0)
no_started_trb = false;
out:
/*
@ -2699,7 +2687,7 @@ static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,
continue;
if (!list_empty(&dep->started_list))
return;
return no_started_trb;
}
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
@ -2708,6 +2696,25 @@ static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,
dwc->u1u2 = 0;
}
return no_started_trb;
}
static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,
const struct dwc3_event_depevt *event)
{
int status = 0;
if (usb_endpoint_xfer_isoc(dep->endpoint.desc))
dwc3_gadget_endpoint_frame_from_event(dep, event);
if (event->status & DEPEVT_STATUS_BUSERR)
status = -ECONNRESET;
if (event->status & DEPEVT_STATUS_MISSED_ISOC)
status = -EXDEV;
dwc3_gadget_endpoint_trbs_complete(dep, event, status);
}
static void dwc3_gadget_endpoint_transfer_not_ready(struct dwc3_ep *dep,