1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
#ifndef _HIDDEV_H
#define _HIDDEV_H
/*
* $Id: hiddev.h,v 1.1.1.4 2003/10/14 08:09:25 sparq Exp $
*
* Copyright (c) 1999-2000 Vojtech Pavlik
*
* Sponsored by SuSE
*/
/*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*/
/*
* The event structure itself
*/
struct hiddev_event {
unsigned hid;
signed int value;
};
struct hiddev_devinfo {
unsigned int bustype;
unsigned int busnum;
unsigned int devnum;
unsigned int ifnum;
short vendor;
short product;
short version;
unsigned num_applications;
};
#define HID_STRING_SIZE 256
struct hiddev_string_descriptor {
int index;
char value[HID_STRING_SIZE];
};
struct hiddev_report_info {
unsigned report_type;
unsigned report_id;
unsigned num_fields;
};
/* To do a GUSAGE/SUSAGE, fill in at least usage_code, report_type and
* report_id. Set report_id to REPORT_ID_UNKNOWN if the rest of the fields
* are unknown. Otherwise use a usage_ref struct filled in from a previous
* successful GUSAGE/SUSAGE call to save time. To actually send a value
* to the device, perform a SUSAGE first, followed by a SREPORT. If an
* INITREPORT is done, a GREPORT isn't necessary before a GUSAGE.
*/
#define HID_REPORT_ID_UNKNOWN 0xffffffff
#define HID_REPORT_ID_FIRST 0x00000100
#define HID_REPORT_ID_NEXT 0x00000200
#define HID_REPORT_ID_MASK 0x000000ff
#define HID_REPORT_ID_MAX 0x000000ff
#define HID_REPORT_TYPE_INPUT 1
#define HID_REPORT_TYPE_OUTPUT 2
#define HID_REPORT_TYPE_FEATURE 3
#define HID_REPORT_TYPE_MIN 1
#define HID_REPORT_TYPE_MAX 3
struct hiddev_field_info {
unsigned report_type;
unsigned report_id;
unsigned field_index;
unsigned maxusage;
unsigned flags;
unsigned physical; /* physical usage for this field */
unsigned logical; /* logical usage for this field */
unsigned application; /* application usage for this field */
__s32 logical_minimum;
__s32 logical_maximum;
__s32 physical_minimum;
__s32 physical_maximum;
unsigned unit_exponent;
unsigned unit;
};
/* Fill in report_type, report_id and field_index to get the information on a
* field.
*/
#define HID_FIELD_CONSTANT 0x001
#define HID_FIELD_VARIABLE 0x002
#define HID_FIELD_RELATIVE 0x004
#define HID_FIELD_WRAP 0x008
#define HID_FIELD_NONLINEAR 0x010
#define HID_FIELD_NO_PREFERRED 0x020
#define HID_FIELD_NULL_STATE 0x040
#define HID_FIELD_VOLATILE 0x080
#define HID_FIELD_BUFFERED_BYTE 0x100
struct hiddev_usage_ref {
unsigned report_type;
unsigned report_id;
unsigned field_index;
unsigned usage_index;
unsigned usage_code;
__s32 value;
};
/*
* Protocol version.
*/
#define HID_VERSION 0x010002
/*
* IOCTLs (0x00 - 0x7f)
*/
#define HIDIOCGVERSION _IOR('H', 0x01, int)
#define HIDIOCAPPLICATION _IO('H', 0x02)
#define HIDIOCGDEVINFO _IOR('H', 0x03, struct hiddev_devinfo)
#define HIDIOCGSTRING _IOR('H', 0x04, struct hiddev_string_descriptor)
#define HIDIOCINITREPORT _IO('H', 0x05)
#define HIDIOCGNAME(len) _IOC(_IOC_READ, 'H', 0x06, len)
#define HIDIOCGREPORT _IOW('H', 0x07, struct hiddev_report_info)
#define HIDIOCSREPORT _IOW('H', 0x08, struct hiddev_report_info)
#define HIDIOCGREPORTINFO _IOWR('H', 0x09, struct hiddev_report_info)
#define HIDIOCGFIELDINFO _IOWR('H', 0x0A, struct hiddev_field_info)
#define HIDIOCGUSAGE _IOWR('H', 0x0B, struct hiddev_usage_ref)
#define HIDIOCSUSAGE _IOW('H', 0x0C, struct hiddev_usage_ref)
#define HIDIOCGUCODE _IOWR('H', 0x0D, struct hiddev_usage_ref)
/* To traverse the input report descriptor info for a HID device, perform the
* following:
*
* rinfo.report_type = HID_REPORT_TYPE_INPUT;
* rinfo.report_id = HID_REPORT_ID_FIRST;
* ret = ioctl(fd, HIDIOCGREPORTINFO, &rinfo);
*
* while (ret >= 0) {
* for (i = 0; i < rinfo.num_fields; i++) {
* finfo.report_type = rinfo.report_type;
* finfo.report_id = rinfo.report_id;
* finfo.field_index = i;
* ioctl(fd, HIDIOCGFIELDINFO, &finfo);
* for (j = 0; j < finfo.maxusage; j++) {
* uref.field_index = i;
* uref.usage_index = j;
* ioctl(fd, HIDIOCGUCODE, &uref);
* ioctl(fd, HIDIOCGUSAGE, &uref);
* }
* }
* uref.report_id |= HID_REPORT_ID_NEXT;
* ret = ioctl(fd, HIDIOCGREPORTINFO, &uref);
* }
*/
#ifdef __KERNEL__
/*
* In-kernel definitions.
*/
#ifdef CONFIG_USB_HIDDEV
int hiddev_connect(struct hid_device *);
void hiddev_disconnect(struct hid_device *);
void hiddev_hid_event(struct hid_device *, unsigned int usage, int value);
int __init hiddev_init(void);
void __exit hiddev_exit(void);
#else
static inline int hiddev_connect(struct hid_device *hid) { return -1; }
static inline void hiddev_disconnect(struct hid_device *hid) { }
static inline void hiddev_hid_event(struct hid_device *hid, unsigned int usage, int value) { }
static inline int hiddev_init(void) { return 0; }
static inline void hiddev_exit(void) { }
#endif
#endif
#endif
|
