zircon/system/banjo/ddk.protocol.usb.composite/usb-composite.banjo

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

library ddk.protocol.usb.composite;

using zircon.hw.usb;
using zx;

[Layout = "ddk-protocol"]
protocol UsbComposite {
    /// Returns the length of the additional descriptor list.
    GetAdditionalDescriptorLength() -> (usize length);
    /// Returns the USB descriptors following the interface's existing descriptors.
    GetAdditionalDescriptorList() -> (zx.status s, vector<uint8> desc);
    /// Marks the interface as claimed and appends the interface descriptor to the
    /// interface's existing descriptors.
    ClaimInterface(zircon.hw.usb.UsbInterfaceDescriptor desc, uint32 length) -> (zx.status s);
};