From: Gregory Herrero <gregory.herrero@xxxxxxxxx>
Enable phy driver to report vbus session. This allows us to remove
D+ pullup when vbus is not present.
Signed-off-by: Gregory Herrero <gregory.herrero@xxxxxxxxx>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@xxxxxxxxx>
---
drivers/usb/dwc2/gadget.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 0440e1e..a02f3c2 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3005,11 +3005,35 @@ static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on)
return 0;
}
+static int s3c_hsotg_vbus_session(struct usb_gadget *gadget, int is_active)
+{
+ struct dwc2_hsotg *hsotg = to_hsotg(gadget);
+ unsigned long flags;
+
+ dev_dbg(hsotg->dev, "%s: is_active: %d\n", __func__, is_active);
+ spin_lock_irqsave(&hsotg->lock, flags);
+
+ if (is_active) {
+ /* Kill any ep0 requests as controller will be reinitialized */
+ kill_all_requests(hsotg, hsotg->eps_out[0], -ECONNRESET, true);
+ s3c_hsotg_core_init_disconnected(hsotg);
+ if (hsotg->enabled)
+ s3c_hsotg_core_connect(hsotg);
+ } else {
+ s3c_hsotg_core_disconnect(hsotg);
+ s3c_hsotg_disconnect(hsotg);
+ }
+
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+ return 0;
+}
+
static const struct usb_gadget_ops s3c_hsotg_gadget_ops = {
.get_frame = s3c_hsotg_gadget_getframe,
.udc_start = s3c_hsotg_udc_start,
.udc_stop = s3c_hsotg_udc_stop,
.pullup = s3c_hsotg_pullup,
+ .vbus_session = s3c_hsotg_vbus_session,
};
/**
--
2.1.0
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