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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>
21 *
22 * Changes/Revisions:
23 * 0.5 08/13/2015 (David Herrmann <dh.herrmann@gmail.com> &
24 * Benjamin Tissoires <benjamin.tissoires@redhat.com>)
25 * - add UI_DEV_SETUP ioctl
26 * - add UI_ABS_SETUP ioctl
27 * - add UI_GET_VERSION ioctl
28 * 0.4 01/09/2014 (Benjamin Tissoires <benjamin.tissoires@redhat.com>)
29 * - add UI_GET_SYSNAME ioctl
30 * 0.3 24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>)
31 * - update ff support for the changes in kernel interface
32 * - add UINPUT_VERSION
33 * 0.2 16/10/2004 (Micah Dowty <micah@navi.cx>)
34 * - added force feedback support
35 * - added UI_SET_PHYS
36 * 0.1 20/06/2002
37 * - first public version
38 */
39#ifndef __UINPUT_H_
40#define __UINPUT_H_
41
42#include <uapi/linux/uinput.h>
43
44#define UINPUT_NAME "uinput"
45#define UINPUT_BUFFER_SIZE 16
46#define UINPUT_NUM_REQUESTS 16
47
48enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };
49
50struct uinput_request {
51 unsigned int id;
52 unsigned int code; /* UI_FF_UPLOAD, UI_FF_ERASE */
53
54 int retval;
55 struct completion done;
56
57 union {
58 unsigned int effect_id;
59 struct {
60 struct ff_effect *effect;
61 struct ff_effect *old;
62 } upload;
63 } u;
64};
65
66struct uinput_device {
67 struct input_dev *dev;
68 struct mutex mutex;
69 enum uinput_state state;
70 wait_queue_head_t waitq;
71 unsigned char ready;
72 unsigned char head;
73 unsigned char tail;
74 struct input_event buff[UINPUT_BUFFER_SIZE];
75 unsigned int ff_effects_max;
76
77 struct uinput_request *requests[UINPUT_NUM_REQUESTS];
78 wait_queue_head_t requests_waitq;
79 spinlock_t requests_lock;
80};
81#endif /* __UINPUT_H_ */
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>
21 *
22 * Changes/Revisions:
23 * 0.4 01/09/2014 (Benjamin Tissoires <benjamin.tissoires@redhat.com>)
24 * - add UI_GET_SYSNAME ioctl
25 * 0.3 24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>)
26 * - update ff support for the changes in kernel interface
27 * - add UINPUT_VERSION
28 * 0.2 16/10/2004 (Micah Dowty <micah@navi.cx>)
29 * - added force feedback support
30 * - added UI_SET_PHYS
31 * 0.1 20/06/2002
32 * - first public version
33 */
34#ifndef __UINPUT_H_
35#define __UINPUT_H_
36
37#include <uapi/linux/uinput.h>
38
39#define UINPUT_NAME "uinput"
40#define UINPUT_BUFFER_SIZE 16
41#define UINPUT_NUM_REQUESTS 16
42
43enum uinput_state { UIST_NEW_DEVICE, UIST_SETUP_COMPLETE, UIST_CREATED };
44
45struct uinput_request {
46 unsigned int id;
47 unsigned int code; /* UI_FF_UPLOAD, UI_FF_ERASE */
48
49 int retval;
50 struct completion done;
51
52 union {
53 unsigned int effect_id;
54 struct {
55 struct ff_effect *effect;
56 struct ff_effect *old;
57 } upload;
58 } u;
59};
60
61struct uinput_device {
62 struct input_dev *dev;
63 struct mutex mutex;
64 enum uinput_state state;
65 wait_queue_head_t waitq;
66 unsigned char ready;
67 unsigned char head;
68 unsigned char tail;
69 struct input_event buff[UINPUT_BUFFER_SIZE];
70 unsigned int ff_effects_max;
71
72 struct uinput_request *requests[UINPUT_NUM_REQUESTS];
73 wait_queue_head_t requests_waitq;
74 spinlock_t requests_lock;
75};
76#endif /* __UINPUT_H_ */