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[mirror_ubuntu-bionic-kernel.git] / include / linux / uinput.h
CommitLineData
1da177e4
LT
1/*
2 * User level driver support for input subsystem
3 *
4 * Heavily based on evdev.c by Vojtech Pavlik
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * Author: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
221979aa 21 *
1da177e4 22 * Changes/Revisions:
ff462551
AH
23 * 0.3 24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>)
24 * - update ff support for the changes in kernel interface
25 * - add UINPUT_VERSION
1da177e4
LT
26 * 0.2 16/10/2004 (Micah Dowty <micah@navi.cx>)
27 * - added force feedback support
28 * - added UI_SET_PHYS
29 * 0.1 20/06/2002
30 * - first public version
31 */
607ca46e
DH
32#ifndef __UINPUT_H_
33#define __UINPUT_H_
ff462551 34
607ca46e 35#include <uapi/linux/uinput.h>
ff462551 36
1da177e4
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37#define UINPUT_NAME "uinput"
38#define UINPUT_BUFFER_SIZE 16
39#define UINPUT_NUM_REQUESTS 16
40
29506415 41enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };
1da177e4
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42
43struct uinput_request {
c5b3533a
DT
44 unsigned int id;
45 unsigned int code; /* UI_FF_UPLOAD, UI_FF_ERASE */
1da177e4
LT
46
47 int retval;
0048e603 48 struct completion done;
1da177e4
LT
49
50 union {
c5b3533a 51 unsigned int effect_id;
ff462551
AH
52 struct {
53 struct ff_effect *effect;
54 struct ff_effect *old;
55 } upload;
1da177e4
LT
56 } u;
57};
58
59struct uinput_device {
60 struct input_dev *dev;
221979aa 61 struct mutex mutex;
29506415 62 enum uinput_state state;
1da177e4 63 wait_queue_head_t waitq;
29506415
DT
64 unsigned char ready;
65 unsigned char head;
66 unsigned char tail;
1da177e4 67 struct input_event buff[UINPUT_BUFFER_SIZE];
05be8b81 68 unsigned int ff_effects_max;
1da177e4
LT
69
70 struct uinput_request *requests[UINPUT_NUM_REQUESTS];
71 wait_queue_head_t requests_waitq;
0048e603 72 spinlock_t requests_lock;
1da177e4 73};
1da177e4 74#endif /* __UINPUT_H_ */