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Commit bc5ba2e0 authored by Felipe Balbi's avatar Felipe Balbi
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usb: dwc3: gadget: call gadget driver's ->suspend/->resume 



When going into bus suspend/resume we _must_
call gadget driver's ->suspend/->resume callbacks
accordingly. This patch implements that very feature
which has been missing forever.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent b992e681

drivers/usb/dwc3/gadget.c

+35 −0
Original line number Diff line number Diff line
@@ -2028,6 +2028,24 @@ static void dwc3_disconnect_gadget(struct dwc3 *dwc) 
	}

}



static void dwc3_suspend_gadget(struct dwc3 *dwc)

{

	if (dwc->gadget_driver && dwc->gadget_driver->disconnect) {

		spin_unlock(&dwc->lock);

		dwc->gadget_driver->suspend(&dwc->gadget);

		spin_lock(&dwc->lock);

	}

}



static void dwc3_resume_gadget(struct dwc3 *dwc)

{

	if (dwc->gadget_driver && dwc->gadget_driver->disconnect) {

		spin_unlock(&dwc->lock);

		dwc->gadget_driver->resume(&dwc->gadget);

		spin_lock(&dwc->lock);

	}

}



static void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum, bool force)

{

	struct dwc3_ep *dep;
@@ -2414,6 +2432,23 @@ static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, 


	dwc->link_state = next;



	switch (next) {

	case DWC3_LINK_STATE_U1:

		if (dwc->speed == USB_SPEED_SUPER)

			dwc3_suspend_gadget(dwc);

		break;

	case DWC3_LINK_STATE_U2:

	case DWC3_LINK_STATE_U3:

		dwc3_suspend_gadget(dwc);

		break;

	case DWC3_LINK_STATE_RESUME:

		dwc3_resume_gadget(dwc);

		break;

	default:

		/* do nothing */

		break;

	}



	dev_vdbg(dwc->dev, "%s link %d\n", __func__, dwc->link_state);

}