Changeset c2343cc in mainline

Timestamp:

2011-03-14T22:22:16Z (13 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

7ffe82f

Parents:

206f71a

Message:

Add function for getting USB address of a device

Location:

uspace/lib/usb

Files:

• include/usb/pipes.h (modified) (1 diff)
• src/pipes.c (modified) (2 diffs)

uspace/lib/usb/include/usb/pipes.h

@@ -123 +123 @@
 
 int usb_device_get_assigned_interface(ddf_dev_t *);
+usb_address_t usb_device_get_assigned_address(devman_handle_t);
 
 int usb_endpoint_pipe_initialize(usb_endpoint_pipe_t *,

uspace/lib/usb/src/pipes.c

@@ -52 +52 @@
         sysarg_t address;
 
-
         /*
          * We are sending special value as a handle - zero - to get
@@ -94 +93 @@
 
         return (int) iface_no;
+}
+
+/** Tell USB address assigned to given device.
+ *
+ * @param dev_handle Devman handle of the USB device in question.
+ * @return USB address or negative error code.
+ */
+usb_address_t usb_device_get_assigned_address(devman_handle_t dev_handle)
+{
+        int parent_phone = devman_parent_device_connect(dev_handle,
+            IPC_FLAG_BLOCKING);
+        if (parent_phone < 0) {
+                return parent_phone;
+        }
+
+        sysarg_t address;
+
+        int rc = async_req_2_1(parent_phone, DEV_IFACE_ID(USB_DEV_IFACE),
+            IPC_M_USB_GET_ADDRESS,
+            dev_handle, &address);
+
+        if (rc != EOK) {
+                return rc;
+        }
+
+        async_hangup(parent_phone);
+
+        return (usb_address_t) address;
 }