usb: dwc2: Update GINTSTS_GOUTNAKEFF interrupt handling

Disabled only unmasked endpoints based on DAINTMSK register.
This will allow to minimize GINTSTS_GOUTNAKEFF interrupt handling.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 2ffc380..4509b2e 100644 (file)
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3628,8 +3628,11 @@ irq_retry:
                u8 idx;
                u32 epctrl;
                u32 gintmsk;
+               u32 daintmsk;
                struct dwc2_hsotg_ep *hs_ep;
 
+               daintmsk = dwc2_readl(hsotg->regs + DAINTMSK);
+               daintmsk >>= DAINT_OUTEP_SHIFT;
                /* Mask this interrupt */
                gintmsk = dwc2_readl(hsotg->regs + GINTMSK);
                gintmsk &= ~GINTSTS_GOUTNAKEFF;
@@ -3638,9 +3641,13 @@ irq_retry:
                dev_dbg(hsotg->dev, "GOUTNakEff triggered\n");
                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) {
                                epctrl |= DXEPCTL_SNAK;
                                epctrl |= DXEPCTL_EPDIS;
                                dwc2_writel(epctrl, hsotg->regs + DOEPCTL(idx));