USB: usb-hub: Add a weak function for resetting devices

Add a __weak function that can be overridden to reset devices
attached to an ehci devices after the FEAT_POWER has been submitted

Signed-off-by: Dan Murphy <dmurphy@ti.com>

diff --git a/common/usb_hub.c b/common/usb_hub.c
index a11b401..fd2b4ed 100644 (file)
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -44,6 +44,10 @@
 static struct usb_hub_device hub_dev[USB_MAX_HUB];
 static int usb_hub_index;
 
+__weak void usb_hub_reset_devices(int port)
+{
+       return;
+}
 
 static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
 {
@@ -426,6 +430,14 @@ static int usb_hub_configure(struct usb_device *dev)
              "" : "no ");
        usb_hub_power_on(hub);
 
+       /*
+        * Reset any devices that may be in a bad state when applying
+        * the power.  This is a __weak function.  Resetting of the devices
+        * should occur in the board file of the device.
+        */
+       for (i = 0; i < dev->maxchild; i++)
+               usb_hub_reset_devices(i + 1);
+
        for (i = 0; i < dev->maxchild; i++) {
                ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
                unsigned short portstatus, portchange;