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iƞ ( I/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
#ifndef __UHID_H_
#define __UHID_H_
/*
* User-space I/O driver support for HID subsystem
* Copyright (c) 2012 David Herrmann
*/
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
/*
* Public header for user-space communication. We try to keep every structure
* aligned but to be safe we also use __attribute__((__packed__)). Therefore,
* the communication should be ABI compatible even between architectures.
*/
#include
#include
#include
enum uhid_event_type {
__UHID_LEGACY_CREATE,
UHID_DESTROY,
UHID_START,
UHID_STOP,
UHID_OPEN,
UHID_CLOSE,
UHID_OUTPUT,
__UHID_LEGACY_OUTPUT_EV,
__UHID_LEGACY_INPUT,
UHID_GET_REPORT,
UHID_GET_REPORT_REPLY,
UHID_CREATE2,
UHID_INPUT2,
UHID_SET_REPORT,
UHID_SET_REPORT_REPLY,
};
struct uhid_create2_req {
__u8 name[128];
__u8 phys[64];
__u8 uniq[64];
__u16 rd_size;
__u16 bus;
__u32 vendor;
__u32 product;
__u32 version;
__u32 country;
__u8 rd_data[HID_MAX_DESCRIPTOR_SIZE];
} __attribute__((__packed__));
enum uhid_dev_flag {
UHID_DEV_NUMBERED_FEATURE_REPORTS = (1ULL << 0),
UHID_DEV_NUMBERED_OUTPUT_REPORTS = (1ULL << 1),
UHID_DEV_NUMBERED_INPUT_REPORTS = (1ULL << 2),
};
struct uhid_start_req {
__u64 dev_flags;
};
#define UHID_DATA_MAX 4096
enum uhid_report_type {
UHID_FEATURE_REPORT,
UHID_OUTPUT_REPORT,
UHID_INPUT_REPORT,
};
struct uhid_input2_req {
__u16 size;
__u8 data[UHID_DATA_MAX];
} __attribute__((__packed__));
struct uhid_output_req {
__u8 data[UHID_DATA_MAX];
__u16 size;
__u8 rtype;
} __attribute__((__packed__));
struct uhid_get_report_req {
__u32 id;
__u8 rnum;
__u8 rtype;
} __attribute__((__packed__));
struct uhid_get_report_reply_req {
__u32 id;
__u16 err;
__u16 size;
__u8 data[UHID_DATA_MAX];
} __attribute__((__packed__));
struct uhid_set_report_req {
__u32 id;
__u8 rnum;
__u8 rtype;
__u16 size;
__u8 data[UHID_DATA_MAX];
} __attribute__((__packed__));
struct uhid_set_report_reply_req {
__u32 id;
__u16 err;
} __attribute__((__packed__));
/*
* Compat Layer
* All these commands and requests are obsolete. You should avoid using them in
* new code. We support them for backwards-compatibility, but you might not get
* access to new feature in case you use them.
*/
enum uhid_legacy_event_type {
UHID_CREATE = __UHID_LEGACY_CREATE,
UHID_OUTPUT_EV = __UHID_LEGACY_OUTPUT_EV,
UHID_INPUT = __UHID_LEGACY_INPUT,
UHID_FEATURE = UHID_GET_REPORT,
UHID_FEATURE_ANSWER = UHID_GET_REPORT_REPLY,
};
/* Obsolete! Use UHID_CREATE2. */
struct uhid_create_req {
__u8 name[128];
__u8 phys[64];
__u8 uniq[64];
__u8 *rd_data;
__u16 rd_size;
__u16 bus;
__u32 vendor;
__u32 product;
__u32 version;
__u32 country;
} __attribute__((__packed__));
/* Obsolete! Use UHID_INPUT2. */
struct uhid_input_req {
__u8 data[UHID_DATA_MAX];
__u16 size;
} __attribute__((__packed__));
/* Obsolete! Kernel uses UHID_OUTPUT exclusively now. */
struct uhid_output_ev_req {
__u16 type;
__u16 code;
__s32 value;
} __attribute__((__pack