lkml.org 
[lkml]   [2017]   [Apr]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 3/3] usb: dwc2: Update GINTSTS_GOUTNAKEFF interrupt handling
Disabled only unmasked endpoints based on DAINTMSK register.
This will allow to minimize GINTSTS_GOUTNAKEFF interrupt handling.

Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
---
drivers/usb/dwc2/gadget.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 52f7db9..3c4eff6 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3662,8 +3662,11 @@ static irqreturn_t dwc2_hsotg_irq(int irq, void *pw)
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;
@@ -3672,9 +3675,13 @@ static irqreturn_t dwc2_hsotg_irq(int irq, void *pw)
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));
--
2.7.4
\
 
 \ /
  Last update: 2017-04-19 13:08    [W:0.036 / U:0.272 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site