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Commit 689efb26 authored by Razmik Karapetyan's avatar Razmik Karapetyan Committed by Felipe Balbi
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usb: dwc2: Update dwc2_handle_incomplete_isoc_out() function 



In 'for' loop skipped masked and non-ISOC EPs. Also breaked 'for' loop
after setting SGOUTNAK in DCTL,when one enabled EP was detected.

This will allow to minimize incomplete ISOC OUT interrupt handling.

Acked-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarRazmik Karapetyan <razmik@synopsys.com>
Signed-off-by: default avatarMinas Harutyunyan <hminas@synopsys.com>
Signed-off-by: default avatarGrigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 1b4977c7

drivers/usb/dwc2/gadget.c

+12 −2
Original line number Diff line number Diff line
@@ -3455,16 +3455,24 @@ static void dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg) 
{

	u32 gintsts;

	u32 gintmsk;

	u32 daintmsk;

	u32 epctrl;

	struct dwc2_hsotg_ep *hs_ep;

	int idx;



	dev_dbg(hsotg->dev, "%s: GINTSTS_INCOMPL_SOOUT\n", __func__);



	daintmsk = dwc2_readl(hsotg->regs + DAINTMSK);

	daintmsk >>= DAINT_OUTEP_SHIFT;



	for (idx = 1; idx <= hsotg->num_of_eps; idx++) {

		hs_ep = hsotg->eps_out[idx];

		/* Proceed only unmasked ISOC EPs */

		if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk))

			continue;



		epctrl = dwc2_readl(hsotg->regs + DOEPCTL(idx));

		if ((epctrl & DXEPCTL_EPENA) && hs_ep->isochronous &&

		if ((epctrl & DXEPCTL_EPENA) &&

		    dwc2_gadget_target_frame_elapsed(hs_ep)) {

			/* Unmask GOUTNAKEFF interrupt */

			gintmsk = dwc2_readl(hsotg->regs + GINTMSK);
@@ -3472,8 +3480,10 @@ static void dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg) 
			dwc2_writel(gintmsk, hsotg->regs + GINTMSK);



			gintsts = dwc2_readl(hsotg->regs + GINTSTS);

			if (!(gintsts & GINTSTS_GOUTNAKEFF))

			if (!(gintsts & GINTSTS_GOUTNAKEFF)) {

				__orr32(hsotg->regs + DCTL, DCTL_SGOUTNAK);

				break;

			}

		}

	}