Changeset ff14aede in mainline for uspace/lib/usbhost/src/hcd.c

Timestamp:

2017-11-20T12:24:05Z (6 years ago)

Author:

Aearsis <Hlavaty.Ondrej@…>

Branches:

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

Children:

888238e9

Parents:

306a36d

Message:

usbhost: move TT management to library

File:

• uspace/lib/usbhost/src/hcd.c (modified) (1 diff)

uspace/lib/usbhost/src/hcd.c

@@ -107 +107 @@
 }
 
+/**
+ * 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.
+ */
+void hcd_setup_device_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.address = dev->hub->address;
+                dev->tt.port = dev->port;
+        }
+        else {
+                /* Inherit hub's TT */
+                dev->tt = dev->hub->tt;
+        }
+}
 
 /** Prepare generic usb_transfer_batch and schedule it.