system/fidl/ddk/protocols/usb-bus.fidl

// 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_bus;

using ddk.protocol.usb_hub;
using zircon.hw.usb;
using zircon.hw.usb_hub;
using zx;

// TODO: Not need this anymore.
[repr="C"]
struct ZxDevice {};

[Layout="ddk-protocol"]
interface UsbBus {
    /// Hub support.
    1: ConfigureHub(ZxDevice? hub_device, zircon.hw.usb.UsbSpeed speed,
                    zircon.hw.usb_hub.UsbHubDescriptor descriptor) -> (zx.status s);
    2: HubDeviceAdded(ZxDevice? hub_device, int64 port, zircon.hw.usb.UsbSpeed speed)
           -> (zx.status s);
    3: HubDeviceRemoved(ZxDevice? hub_device, int64 port) -> (zx.status s);
    4: SetHubInterface(ZxDevice? usb_device, ddk.protocol.usb_hub.UsbHub hub) -> (zx.status s);
};

/// Interface for use by the HCI controller to use to notify when devices are added and removed.
[Layout="ddk-interface"]
interface UsbBusInterface {
    1: AddDevice(uint32 device_id, uint32 hub_id, zircon.hw.usb.UsbSpeed speed) -> (zx.status s);
    2: RemoveDevice(uint32 device_id) -> ();
    3: ResetHubPort(uint32 hub_id, uint32 port) -> ();
};