| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.accessorydisplay.sink; |
| |
| // Constants from kernel include/linux/usb/f_accessory.h |
| final class UsbAccessoryConstants { |
| /* Use Google Vendor ID when in accessory mode */ |
| public static final int USB_ACCESSORY_VENDOR_ID = 0x18D1; |
| |
| /* Product ID to use when in accessory mode */ |
| public static final int USB_ACCESSORY_PRODUCT_ID = 0x2D00; |
| |
| /* Product ID to use when in accessory mode and adb is enabled */ |
| public static final int USB_ACCESSORY_ADB_PRODUCT_ID = 0x2D01; |
| |
| /* Indexes for strings sent by the host via ACCESSORY_SEND_STRING */ |
| public static final int ACCESSORY_STRING_MANUFACTURER = 0; |
| public static final int ACCESSORY_STRING_MODEL = 1; |
| public static final int ACCESSORY_STRING_DESCRIPTION = 2; |
| public static final int ACCESSORY_STRING_VERSION = 3; |
| public static final int ACCESSORY_STRING_URI = 4; |
| public static final int ACCESSORY_STRING_SERIAL = 5; |
| |
| /* Control request for retrieving device's protocol version |
| * |
| * requestType: USB_DIR_IN | USB_TYPE_VENDOR |
| * request: ACCESSORY_GET_PROTOCOL |
| * value: 0 |
| * index: 0 |
| * data version number (16 bits little endian) |
| * 1 for original accessory support |
| * 2 adds HID and device to host audio support |
| */ |
| public static final int ACCESSORY_GET_PROTOCOL = 51; |
| |
| /* Control request for host to send a string to the device |
| * |
| * requestType: USB_DIR_OUT | USB_TYPE_VENDOR |
| * request: ACCESSORY_SEND_STRING |
| * value: 0 |
| * index: string ID |
| * data zero terminated UTF8 string |
| * |
| * The device can later retrieve these strings via the |
| * ACCESSORY_GET_STRING_* ioctls |
| */ |
| public static final int ACCESSORY_SEND_STRING = 52; |
| |
| /* Control request for starting device in accessory mode. |
| * The host sends this after setting all its strings to the device. |
| * |
| * requestType: USB_DIR_OUT | USB_TYPE_VENDOR |
| * request: ACCESSORY_START |
| * value: 0 |
| * index: 0 |
| * data none |
| */ |
| public static final int ACCESSORY_START = 53; |
| |
| /* Control request for registering a HID device. |
| * Upon registering, a unique ID is sent by the accessory in the |
| * value parameter. This ID will be used for future commands for |
| * the device |
| * |
| * requestType: USB_DIR_OUT | USB_TYPE_VENDOR |
| * request: ACCESSORY_REGISTER_HID_DEVICE |
| * value: Accessory assigned ID for the HID device |
| * index: total length of the HID report descriptor |
| * data none |
| */ |
| public static final int ACCESSORY_REGISTER_HID = 54; |
| |
| /* Control request for unregistering a HID device. |
| * |
| * requestType: USB_DIR_OUT | USB_TYPE_VENDOR |
| * request: ACCESSORY_REGISTER_HID |
| * value: Accessory assigned ID for the HID device |
| * index: 0 |
| * data none |
| */ |
| public static final int ACCESSORY_UNREGISTER_HID = 55; |
| |
| /* Control request for sending the HID report descriptor. |
| * If the HID descriptor is longer than the endpoint zero max packet size, |
| * the descriptor will be sent in multiple ACCESSORY_SET_HID_REPORT_DESC |
| * commands. The data for the descriptor must be sent sequentially |
| * if multiple packets are needed. |
| * |
| * requestType: USB_DIR_OUT | USB_TYPE_VENDOR |
| * request: ACCESSORY_SET_HID_REPORT_DESC |
| * value: Accessory assigned ID for the HID device |
| * index: offset of data in descriptor |
| * (needed when HID descriptor is too big for one packet) |
| * data the HID report descriptor |
| */ |
| public static final int ACCESSORY_SET_HID_REPORT_DESC = 56; |
| |
| /* Control request for sending HID events. |
| * |
| * requestType: USB_DIR_OUT | USB_TYPE_VENDOR |
| * request: ACCESSORY_SEND_HID_EVENT |
| * value: Accessory assigned ID for the HID device |
| * index: 0 |
| * data the HID report for the event |
| */ |
| public static final int ACCESSORY_SEND_HID_EVENT = 57; |
| |
| /* Control request for setting the audio mode. |
| * |
| * requestType: USB_DIR_OUT | USB_TYPE_VENDOR |
| * request: ACCESSORY_SET_AUDIO_MODE |
| * value: 0 - no audio |
| * 1 - device to host, 44100 16-bit stereo PCM |
| * index: 0 |
| * data none |
| */ |
| public static final int ACCESSORY_SET_AUDIO_MODE = 58; |
| |
| private UsbAccessoryConstants() { |
| } |
| } |