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/*
* Gadget Function Driver for Android USB accessories
*
* Copyright (C) 2011 Google, Inc.
* Author: Mike Lockwood <lockwood@android.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __LINUX_USB_F_ACCESSORY_H
#define __LINUX_USB_F_ACCESSORY_H
/* Use Google Vendor ID when in accessory mode */
#define USB_ACCESSORY_VENDOR_ID 0x18D1
/* Product ID to use when in accessory mode */
#define USB_ACCESSORY_PRODUCT_ID 0x2D00
/* Product ID to use when in accessory mode and adb is enabled */
#define USB_ACCESSORY_ADB_PRODUCT_ID 0x2D01
/* Indexes for strings sent by the host via ACCESSORY_SEND_STRING */
#define ACCESSORY_STRING_MANUFACTURER 0
#define ACCESSORY_STRING_MODEL 1
#define ACCESSORY_STRING_DESCRIPTION 2
#define ACCESSORY_STRING_VERSION 3
#define ACCESSORY_STRING_URI 4
#define 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 device to host audio support
*/
#define 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
*/
#define 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
*/
#define ACCESSORY_START 53
/* 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
*/
#define ACCESSORY_SET_AUDIO_MODE 58
/* ioctls for retrieving strings set by the host */
#define ACCESSORY_GET_STRING_MANUFACTURER _IOW('M', 1, char[256])
#define ACCESSORY_GET_STRING_MODEL _IOW('M', 2, char[256])
#define ACCESSORY_GET_STRING_DESCRIPTION _IOW('M', 3, char[256])
#define ACCESSORY_GET_STRING_VERSION _IOW('M', 4, char[256])
#define ACCESSORY_GET_STRING_URI _IOW('M', 5, char[256])
#define ACCESSORY_GET_STRING_SERIAL _IOW('M', 6, char[256])
/* returns 1 if there is a start request pending */
#define ACCESSORY_IS_START_REQUESTED _IO('M', 7)
/* returns audio mode (set via the ACCESSORY_SET_AUDIO_MODE control request) */
#define ACCESSORY_GET_AUDIO_MODE _IO('M', 8)
#endif /* __LINUX_USB_F_ACCESSORY_H */
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