As per databook, AcceptU1/U2Ena bit should be set after receiving
SetConfiguration Command.
Signed-off-by: Pratyush Anand <pratyush.anand@xxxxxx>
---
drivers/usb/dwc3/ep0.c | 9 +++++++++
drivers/usb/dwc3/gadget.c | 1 -
2 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 5ce6904..ac4cd07 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -480,6 +480,7 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
{
u32 cfg;
int ret;
+ u32 reg;
dwc->start_config_issued = false;
cfg = le16_to_cpu(ctrl->wValue);
@@ -494,6 +495,14 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
/* if the cfg matches and the cfg is non zero */
if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) {
dwc->dev_state = DWC3_CONFIGURED_STATE;
+ /*
+ * Enable transition to U1/U2 state when
+ * nothing is pending from application.
+ */
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg |= (DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA);
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
dwc->resize_fifos = true;
dev_dbg(dwc->dev, "resize fifos flag SET\n");
}
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index a474c20..5c0a68a 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2055,7 +2055,6 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_TSTCTRL_MASK;
- reg |= (DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA);
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
dwc->test_mode = false;
--
1.7.5.4
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