ec4b7dea45
We send UHID_START and UHID_STOP events to user-space when the HID core starts/stops the device. This notifies user-space about driver readiness and data-I/O can start now. This directly forwards the callbacks from hid-core to user-space. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
64 lines
1.3 KiB
C
64 lines
1.3 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_START,
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UHID_STOP,
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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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