usb: dwc3: enable ACCEPT{U1,U2}ENA when SetConfiguration received
As per databook, ACCEPT{U1,U2}ENA bits should be set after receiving
SetConfiguration Command.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 1315e78..9b94886 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -474,6 +474,7 @@
{
u32 cfg;
int ret;
+ u32 reg;
dwc->start_config_issued = false;
cfg = le16_to_cpu(ctrl->wValue);
@@ -488,6 +489,14 @@
/* 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");
}