From d84845522d93f92e2278c082f195f83ebd7dfe26 Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:41:42 +0400 Subject: 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 Signed-off-by: Razmik Karapetyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers/usb/dwc2') diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2ffc380ddb62..4509b2eb3eca 100644 --- 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)); -- cgit v1.2.3