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UPSTREAM: dwc3: gadget: Implement the suspend entry event handler

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It had changed to be suspend event for BIT6 in DEVT register from
version 2.30a and above. Thus this patch introduces one suspend
event handler to handle the suspend event.

Change-Id: I62751ee39a2ff13c1359350a8f6c43c14aa4ea12
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Wu Liang feng <wulf@rock-chips.com>
(cherry picked from commit 72704f876f)
This commit is contained in:
Baolin Wang
2016-05-16 16:43:53 +08:00
committed by Huang, Tao
parent 32bfb1dd89
commit 396fda68c3
1 changed files with 25 additions and 1 deletions
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26
drivers/usb/dwc3/gadget.c
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@@ -2692,6 +2692,17 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc,
dwc->link_state = next;
}
static void dwc3_gadget_suspend_interrupt(struct dwc3 *dwc,
unsigned int evtinfo)
{
enum dwc3_link_state next = evtinfo & DWC3_LINK_STATE_MASK;
if (dwc->link_state != next && next == DWC3_LINK_STATE_U3)
dwc3_suspend_gadget(dwc);
dwc->link_state = next;
}
static void dwc3_gadget_hibernation_interrupt(struct dwc3 *dwc,
unsigned int evtinfo)
{
@@ -2743,7 +2754,20 @@ static void dwc3_gadget_interrupt(struct dwc3 *dwc,
dwc3_gadget_linksts_change_interrupt(dwc, event->event_info);
break;
case DWC3_DEVICE_EVENT_EOPF:
dwc3_trace(trace_dwc3_gadget, "End of Periodic Frame");
/* It changed to be suspend event for version 2.30a and above */
if (dwc->revision < DWC3_REVISION_230A) {
dwc3_trace(trace_dwc3_gadget, "End of Periodic Frame");
} else {
dwc3_trace(trace_dwc3_gadget, "U3/L1-L2 Suspend Event");
/*
* Ignore suspend event until the gadget enters into
* USB_STATE_CONFIGURED state.
*/
if (dwc->gadget.state >= USB_STATE_CONFIGURED)
dwc3_gadget_suspend_interrupt(dwc,
event->event_info);
}
break;
case DWC3_DEVICE_EVENT_SOF:
dwc3_trace(trace_dwc3_gadget, "Start of Periodic Frame");