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#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 <linux/input.h>
#include <linux/types.h>
#include <linux/hid.h>
enum uhid_event_type {
UHID_CREATE,
UHID_DESTROY,
UHID_START,
UHID_STOP,
UHID_OPEN,
UHID_CLOSE,
UHID_OUTPUT,
UHID_OUTPUT_EV, /* obsolete! */
UHID_INPUT,
UHID_FEATURE, /* obsolete! use UHID_GET_REPORT */
UHID_GET_REPORT = UHID_FEATURE,
UHID_FEATURE_ANSWER, /* obsolete! use UHID_GET_REPORT_REPLY */
UHID_GET_REPORT_REPLY = UHID_FEATURE_ANSWER,
UHID_CREATE2,
UHID_INPUT2,
};
struct uhid_create_req {
__u8 name[128];
__u8 phys[64];
__u8 uniq[64];
__u8 __user *rd_data;
__u16 rd_size;
__u16 bus;
__u32 vendor;
__u32 product;
__u32 version;
__u32 country;
} __attribute__((__packed__));
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__));
#define UHID_DATA_MAX 4096
enum uhid_report_type {
UHID_FEATURE_REPORT,
UHID_OUTPUT_REPORT,
UHID_INPUT_REPORT,
};
struct uhid_input_req {
__u8 data[UHID_DATA_MAX];
__u16 size;
} __attribute__((__packed__));
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__));
/* Obsolete! Newer kernels will no longer send these events but instead convert
* it into raw output reports via UHID_OUTPUT. */
struct uhid_output_ev_req {
__u16 type;
__u16 code;
__s32 value;
} __attribute__((__packed__));
/* Obsolete! Kernel uses ABI compatible UHID_GET_REPORT. */
struct uhid_feature_req {
__u32 id;
__u8 rnum;
__u8 rtype;
} __attribute__((__packed__));
struct uhid_get_report_req {
__u32 id;
__u8 rnum;
__u8 rtype;
} __attribute__((__packed__));
/* Obsolete! Use ABI compatible UHID_GET_REPORT_REPLY. */
struct uhid_feature_answer_req {
__u32 id;
__u16 err;
__u16 size;
__u8 data[UHID_DATA_MAX];
} __attribute__((__packed__));
struct uhid_get_report_reply_req {
__u32 id;
__u16 err;
__u16 size;
__u8 data[UHID_DATA_MAX];
} __attribute__((__packed__));
struct uhid_event {
__u32 type;
union {
struct uhid_create_req create;
struct uhid_input_req input;
struct uhid_output_req output;
struct uhid_output_ev_req output_ev;
struct uhid_feature_req feature;
struct uhid_get_report_req get_report;
struct uhid_feature_answer_req feature_answer;
struct uhid_get_report_reply_req get_report_reply;
struct uhid_create2_req create2;
struct uhid_input2_req input2;
} u;
} __attribute__((__packed__));
#endif /* __UHID_H_ */
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