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| author | Razmik Karapetyan <razmik@synopsys.com> | 2018-01-19 14:41:16 +0400 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2018-03-13 10:47:41 +0200 |
| commit | 689efb2619b58fa21da6c9b96b74f5d1fb8d2b46 (patch) | |
| tree | 0b0bc07697f9783a3b2b8583768b42799c7f0ac4 /drivers/usb/dwc2/gadget.c | |
| parent | 1b4977c793d3d9818ff04df1a09f3c60166626fa (diff) | |
| download | lwn-689efb2619b58fa21da6c9b96b74f5d1fb8d2b46.tar.gz lwn-689efb2619b58fa21da6c9b96b74f5d1fb8d2b46.zip | |
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: 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>
Diffstat (limited to 'drivers/usb/dwc2/gadget.c')
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 8e42537847d4..2ffc380ddb62 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -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; + } } } |