Subversion Repositories hf-risc

#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>

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,

        UHID_FEATURE_ANSWER,

};

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__));

#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_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__));

struct uhid_feature_req {

        __u32 id;

        __u8 rnum;

        __u8 rtype;

} __attribute__((__packed__));

struct uhid_feature_answer_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_feature_answer_req feature_answer;

        } u;

} __attribute__((__packed__));

#endif /* __UHID_H_ */