Index: uspace/lib/usb/include/usb/devdrv.h
===================================================================
--- uspace/lib/usb/include/usb/devdrv.h	(revision 159b91f4767c38fbab0288369a2ec23b232480a5)
+++ uspace/lib/usb/include/usb/devdrv.h	(revision 0b4e7ca5837665462dd121f3429fdf63fd6d33d7)
@@ -79,4 +79,6 @@
 	 */
 	usb_endpoint_mapping_t *pipes;
+	/** Number of other endpoint pipes. */
+	size_t pipes_count;
 	/** Current interface.
 	 * Usually, drivers operate on single interface only.
@@ -157,4 +159,7 @@
 int usb_driver_main(usb_driver_t *);
 
+int usb_device_select_interface(usb_device_t *, uint8_t,
+    usb_endpoint_description_t **);
+
 typedef bool (*usb_polling_callback_t)(usb_device_t *,
     uint8_t *, size_t, void *);
Index: uspace/lib/usb/src/devdrv.c
===================================================================
--- uspace/lib/usb/src/devdrv.c	(revision 159b91f4767c38fbab0288369a2ec23b232480a5)
+++ uspace/lib/usb/src/devdrv.c	(revision 0b4e7ca5837665462dd121f3429fdf63fd6d33d7)
@@ -87,12 +87,12 @@
  * @return Number of pipes (excluding default control pipe).
  */
-static size_t count_other_pipes(usb_driver_t *drv)
+static size_t count_other_pipes(usb_endpoint_description_t **endpoints)
 {
 	size_t count = 0;
-	if (drv->endpoints == NULL) {
+	if (endpoints == NULL) {
 		return 0;
 	}
 
-	while (drv->endpoints[count] != NULL) {
+	while (endpoints[count] != NULL) {
 		count++;
 	}
@@ -107,9 +107,14 @@
  * @return Error code.
  */
-static int initialize_other_pipes(usb_driver_t *drv, usb_device_t *dev)
+static int initialize_other_pipes(usb_endpoint_description_t **endpoints,
+    usb_device_t *dev)
 {
 	int rc;
 
-	size_t pipe_count = count_other_pipes(drv);
+	size_t pipe_count = count_other_pipes(endpoints);
+	if (pipe_count == 0) {
+		return EOK;
+	}
+
 	dev->pipes = malloc(sizeof(usb_endpoint_mapping_t) * pipe_count);
 	if (dev->pipes == NULL) {
@@ -133,5 +138,5 @@
 		}
 
-		dev->pipes[i].description = drv->endpoints[i];
+		dev->pipes[i].description = endpoints[i];
 		dev->pipes[i].interface_no = dev->interface_no;
 		dev->pipes[i].interface_setting = 0;
@@ -179,4 +184,6 @@
 	usb_hc_connection_close(&hc_conn);
 
+	dev->pipes_count = pipe_count;
+
 	return EOK;
 
@@ -261,5 +268,5 @@
 
 	if (driver->endpoints != NULL) {
-		rc = initialize_other_pipes(driver, dev);
+		rc = initialize_other_pipes(driver->endpoints, dev);
 	}
 
@@ -429,4 +436,7 @@
 	dev->descriptors.configuration = NULL;
 
+	dev->pipes_count = 0;
+	dev->pipes = NULL;
+
 	rc = initialize_pipes(dev);
 	if (rc != EOK) {
@@ -440,4 +450,93 @@
 }
 
+/** Destroy existing pipes of a USB device.
+ *
+ * @param dev Device where to destroy the pipes.
+ * @return Error code.
+ */
+static int destroy_current_pipes(usb_device_t *dev)
+{
+	size_t i;
+	int rc;
+
+	/* TODO: this shall be done under some device mutex. */
+
+	/* First check that no session is opened. */
+	for (i = 0; i < dev->pipes_count; i++) {
+		if (usb_pipe_is_session_started(dev->pipes[i].pipe)) {
+			return EBUSY;
+		}
+	}
+
+	/* Prepare connection to HC. */
+	usb_hc_connection_t hc_conn;
+	rc = usb_hc_connection_initialize_from_device(&hc_conn, dev->ddf_dev);
+	if (rc != EOK) {
+		return rc;
+	}
+	rc = usb_hc_connection_open(&hc_conn);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Destroy the pipes. */
+	for (i = 0; i < dev->pipes_count; i++) {
+		usb_pipe_unregister(dev->pipes[i].pipe, &hc_conn);
+		free(dev->pipes[i].pipe);
+	}
+
+	usb_hc_connection_close(&hc_conn);
+
+	free(dev->pipes);
+	dev->pipes = NULL;
+	dev->pipes_count = 0;
+
+	return EOK;
+}
+
+/** Change interface setting of a device.
+ * This function selects new alternate setting of an interface by issuing
+ * proper USB command to the device and also creates new USB pipes
+ * under @c dev->pipes.
+ *
+ * @warning This function is intended for drivers working at interface level.
+ * For drivers controlling the whole device, you need to change interface
+ * manually using usb_request_set_interface() and creating new pipes
+ * with usb_pipe_initialize_from_configuration().
+ *
+ * @param dev USB device.
+ * @param alternate_setting Alternate setting to choose.
+ * @param endpoints New endpoint descriptions.
+ * @return Error code.
+ */
+int usb_device_select_interface(usb_device_t *dev, uint8_t alternate_setting,
+    usb_endpoint_description_t **endpoints)
+{
+	if (dev->interface_no < 0) {
+		return EINVAL;
+	}
+
+	int rc;
+
+	/* TODO: more transactional behavior. */
+
+	/* Destroy existing pipes. */
+	rc = destroy_current_pipes(dev);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Change the interface itself. */
+	rc = usb_request_set_interface(&dev->ctrl_pipe, dev->interface_no,
+	    alternate_setting);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Create new pipes. */
+	rc = initialize_other_pipes(endpoints, dev);
+
+	return rc;
+}
 
 /**