[U-Boot] [PATCH v4 6/7] USB: usb-hub: Add a weak function for resetting devices

[Dan Murphy]

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 at ti.com>
---

v3 - Modified location of the weak function - http://patchwork.ozlabs.org/patch/258229/
v4 - No code changes - http://patchwork.ozlabs.org/patch/259751/

 common/usb_hub.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/common/usb_hub.c b/common/usb_hub.c
index 754d436..da667e8 100644
--- 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.  Resettig 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;
-- 
1.7.9.5