USB: notify phy when root hub port connect change

Phy may need to change settings when port connect change.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Tested-by: Subodh Nijsure <snijsure@grid-net.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 3febe54883bd..540f20bf9e22 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -20,6 +20,7 @@
 #include <linux/usb.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
 #include <linux/usb/quirks.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
@@ -4101,6 +4102,13 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
                 }
         }
 
+        if (hcd->phy && !hdev->parent) {
+                if (portstatus & USB_PORT_STAT_CONNECTION)
+                        usb_phy_notify_connect(hcd->phy, port1);
+                else
+                        usb_phy_notify_disconnect(hcd->phy, port1);
+        }
+
         /* Return now if debouncing failed or nothing is connected or
          * the device was "removed".
          */