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usb: dwc2: Update dwc2_handle_incomplete_isoc_out() function

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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: 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>
This commit is contained in:
Razmik Karapetyan 2018-01-19 14:41:16 +04:00 committed by Felipe Balbi
parent 1b4977c793
commit 689efb2619
1 changed files with 12 additions and 2 deletions
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14
drivers/usb/dwc2/gadget.c
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@ -3455,16 +3455,24 @@ static void dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg)
{ {
u32 gintsts; u32 gintsts;
u32 gintmsk; u32 gintmsk;
u32 daintmsk;
u32 epctrl; u32 epctrl;
struct dwc2_hsotg_ep *hs_ep; struct dwc2_hsotg_ep *hs_ep;
int idx; int idx;
dev_dbg(hsotg->dev, "%s: GINTSTS_INCOMPL_SOOUT\n", __func__); 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++) { for (idx = 1; idx <= hsotg->num_of_eps; idx++) {
hs_ep = hsotg->eps_out[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)); 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)) { dwc2_gadget_target_frame_elapsed(hs_ep)) {
/* Unmask GOUTNAKEFF interrupt */ /* Unmask GOUTNAKEFF interrupt */
gintmsk = dwc2_readl(hsotg->regs + GINTMSK); 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); dwc2_writel(gintmsk, hsotg->regs + GINTMSK);
gintsts = dwc2_readl(hsotg->regs + GINTSTS); gintsts = dwc2_readl(hsotg->regs + GINTSTS);
if (!(gintsts & GINTSTS_GOUTNAKEFF)) if (!(gintsts & GINTSTS_GOUTNAKEFF)) {
__orr32(hsotg->regs + DCTL, DCTL_SGOUTNAK); __orr32(hsotg->regs + DCTL, DCTL_SGOUTNAK);
break;
}
} }
} }