2d040ffbd0
This adds a new event type UHID_INPUT which allows user-space to feed raw HID reports into the HID subsystem. We copy the data into kernel memory and directly feed it into the HID core. There is no error handling of the events couldn't be parsed so user-space should consider all events successfull unless read() returns an error. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
#ifndef __UHID_H_
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#define __UHID_H_
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/*
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* User-space I/O driver support for HID subsystem
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* Copyright (c) 2012 David Herrmann
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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/*
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* Public header for user-space communication. We try to keep every structure
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* aligned but to be safe we also use __attribute__((__packed__)). Therefore,
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* the communication should be ABI compatible even between architectures.
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*/
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#include <linux/input.h>
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#include <linux/types.h>
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enum uhid_event_type {
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UHID_CREATE,
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UHID_DESTROY,
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UHID_INPUT,
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};
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struct uhid_create_req {
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__u8 name[128];
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__u8 phys[64];
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__u8 uniq[64];
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__u8 __user *rd_data;
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__u16 rd_size;
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__u16 bus;
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__u32 vendor;
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__u32 product;
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__u32 version;
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__u32 country;
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} __attribute__((__packed__));
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#define UHID_DATA_MAX 4096
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struct uhid_input_req {
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__u8 data[UHID_DATA_MAX];
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__u16 size;
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} __attribute__((__packed__));
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struct uhid_event {
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__u32 type;
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union {
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struct uhid_create_req create;
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struct uhid_input_req input;
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} u;
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} __attribute__((__packed__));
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#endif /* __UHID_H_ */
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