Changeset 4c25c2fb in mainline for uspace/lib/usbhost/src/bus.c

Timestamp:

2018-01-15T15:02:57Z (7 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

745a3f1

Parents:

01d9707

Message:

usbhost: move managing TT to the library

File:

• uspace/lib/usbhost/src/bus.c (modified) (2 diffs)

uspace/lib/usbhost/src/bus.c

@@ -97 +97 @@
 
 /**
+ * Setup devices Transaction Translation.
+ *
+ * This applies for Low/Full speed devices under High speed hub only. Other
+ * devices just inherit TT from the hub.
+ *
+ * Roothub must be handled specially.
+ */
+static void device_setup_tt(device_t *dev)
+{
+        if (!dev->hub)
+                return;
+
+        if (dev->hub->speed == USB_SPEED_HIGH && usb_speed_is_11(dev->speed)) {
+                /* For LS devices under HS hub */
+                dev->tt.dev = dev->hub;
+                dev->tt.port = dev->port;
+        }
+        else {
+                /* Inherit hub's TT */
+                dev->tt = dev->hub->tt;
+        }
+}
+
+/**
  * Invoke the device_enumerate bus operation.
  *
@@ -111 +135 @@
         if (dev->online)
                 return EINVAL;
+
+        device_setup_tt(dev);
 
         const int r = ops->device_enumerate(dev);