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Commit f3af3651 authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: gadget: always enable IOC on bulk/interrupt transfers 



by setting IOC always, we can recycle TRBs a
lot sooner at the expense of some increased
CPU load.

The extra load seems to be quite minimal on
OMAP5 devices (instead of 1 IRQ for one MSC
transfer, we get
CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS).

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 0e06bcac

drivers/usb/dwc3/gadget.c

+3 −6
Original line number Original line Diff line number Diff line
@@ -771,9 +771,6 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, 
			trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;

			trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;

		else

		else

			trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS;

			trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS;



		if (!req->request.no_interrupt && !chain)

			trb->ctrl |= DWC3_TRB_CTRL_IOC;

		break;

		break;





	case USB_ENDPOINT_XFER_BULK:

	case USB_ENDPOINT_XFER_BULK:
@@ -788,6 +785,9 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, 
		BUG();

		BUG();

	}

	}





	if (!req->request.no_interrupt && !chain)

		trb->ctrl |= DWC3_TRB_CTRL_IOC;



	if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {

	if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {

		trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;

		trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;

		trb->ctrl |= DWC3_TRB_CTRL_CSP;

		trb->ctrl |= DWC3_TRB_CTRL_CSP;
@@ -1855,9 +1855,6 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, 
		return 1;

		return 1;

	}

	}





	if ((event->status & DEPEVT_STATUS_IOC) &&

			(trb->ctrl & DWC3_TRB_CTRL_IOC))

		return 0;

	return 1;

	return 1;

}

}