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1 | #ifndef _HIDDEV_H |
2 | #define _HIDDEV_H |
3 | |
4 | /* |
5 | * Copyright (c) 1999-2000 Vojtech Pavlik |
6 | * |
7 | * Sponsored by SuSE |
8 | */ |
9 | |
10 | /* |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License as published by |
13 | * the Free Software Foundation; either version 2 of the License, or |
14 | * (at your option) any later version. |
15 | * |
16 | * This program is distributed in the hope that it will be useful, |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
19 | * GNU General Public License for more details. |
20 | * |
21 | * You should have received a copy of the GNU General Public License |
22 | * along with this program; if not, write to the Free Software |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
24 | * |
25 | * Should you need to contact me, the author, you can do so either by |
26 | * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail: |
27 | * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic |
28 | */ |
29 | |
30 | #include <linux/types.h> |
31 | |
32 | /* |
33 | * The event structure itself |
34 | */ |
35 | |
36 | struct hiddev_event { |
37 | unsigned hid; |
38 | signed int value; |
39 | }; |
40 | |
41 | struct hiddev_devinfo { |
42 | __u32 bustype; |
43 | __u32 busnum; |
44 | __u32 devnum; |
45 | __u32 ifnum; |
46 | __s16 vendor; |
47 | __s16 product; |
48 | __s16 version; |
49 | __u32 num_applications; |
50 | }; |
51 | |
52 | struct hiddev_collection_info { |
53 | __u32 index; |
54 | __u32 type; |
55 | __u32 usage; |
56 | __u32 level; |
57 | }; |
58 | |
59 | #define HID_STRING_SIZE 256 |
60 | struct hiddev_string_descriptor { |
61 | __s32 index; |
62 | char value[HID_STRING_SIZE]; |
63 | }; |
64 | |
65 | struct hiddev_report_info { |
66 | __u32 report_type; |
67 | __u32 report_id; |
68 | __u32 num_fields; |
69 | }; |
70 | |
71 | /* To do a GUSAGE/SUSAGE, fill in at least usage_code, report_type and |
72 | * report_id. Set report_id to REPORT_ID_UNKNOWN if the rest of the fields |
73 | * are unknown. Otherwise use a usage_ref struct filled in from a previous |
74 | * successful GUSAGE call to save time. To actually send a value to the |
75 | * device, perform a SUSAGE first, followed by a SREPORT. An INITREPORT or a |
76 | * GREPORT isn't necessary for a GUSAGE to return valid data. |
77 | */ |
78 | #define HID_REPORT_ID_UNKNOWN 0xffffffff |
79 | #define HID_REPORT_ID_FIRST 0x00000100 |
80 | #define HID_REPORT_ID_NEXT 0x00000200 |
81 | #define HID_REPORT_ID_MASK 0x000000ff |
82 | #define HID_REPORT_ID_MAX 0x000000ff |
83 | |
84 | #define HID_REPORT_TYPE_INPUT 1 |
85 | #define HID_REPORT_TYPE_OUTPUT 2 |
86 | #define HID_REPORT_TYPE_FEATURE 3 |
87 | #define HID_REPORT_TYPE_MIN 1 |
88 | #define HID_REPORT_TYPE_MAX 3 |
89 | |
90 | struct hiddev_field_info { |
91 | __u32 report_type; |
92 | __u32 report_id; |
93 | __u32 field_index; |
94 | __u32 maxusage; |
95 | __u32 flags; |
96 | __u32 physical; /* physical usage for this field */ |
97 | __u32 logical; /* logical usage for this field */ |
98 | __u32 application; /* application usage for this field */ |
99 | __s32 logical_minimum; |
100 | __s32 logical_maximum; |
101 | __s32 physical_minimum; |
102 | __s32 physical_maximum; |
103 | __u32 unit_exponent; |
104 | __u32 unit; |
105 | }; |
106 | |
107 | /* Fill in report_type, report_id and field_index to get the information on a |
108 | * field. |
109 | */ |
110 | #define HID_FIELD_CONSTANT 0x001 |
111 | #define HID_FIELD_VARIABLE 0x002 |
112 | #define HID_FIELD_RELATIVE 0x004 |
113 | #define HID_FIELD_WRAP 0x008 |
114 | #define HID_FIELD_NONLINEAR 0x010 |
115 | #define HID_FIELD_NO_PREFERRED 0x020 |
116 | #define HID_FIELD_NULL_STATE 0x040 |
117 | #define HID_FIELD_VOLATILE 0x080 |
118 | #define HID_FIELD_BUFFERED_BYTE 0x100 |
119 | |
120 | struct hiddev_usage_ref { |
121 | __u32 report_type; |
122 | __u32 report_id; |
123 | __u32 field_index; |
124 | __u32 usage_index; |
125 | __u32 usage_code; |
126 | __s32 value; |
127 | }; |
128 | |
129 | /* hiddev_usage_ref_multi is used for sending multiple bytes to a control. |
130 | * It really manifests itself as setting the value of consecutive usages */ |
131 | #define HID_MAX_MULTI_USAGES 1024 |
132 | struct hiddev_usage_ref_multi { |
133 | struct hiddev_usage_ref uref; |
134 | __u32 num_values; |
135 | __s32 values[HID_MAX_MULTI_USAGES]; |
136 | }; |
137 | |
138 | /* FIELD_INDEX_NONE is returned in read() data from the kernel when flags |
139 | * is set to (HIDDEV_FLAG_UREF | HIDDEV_FLAG_REPORT) and a new report has |
140 | * been sent by the device |
141 | */ |
142 | #define HID_FIELD_INDEX_NONE 0xffffffff |
143 | |
144 | /* |
145 | * Protocol version. |
146 | */ |
147 | |
148 | #define HID_VERSION 0x010004 |
149 | |
150 | /* |
151 | * IOCTLs (0x00 - 0x7f) |
152 | */ |
153 | |
154 | #define HIDIOCGVERSION _IOR('H', 0x01, int) |
155 | #define HIDIOCAPPLICATION _IO('H', 0x02) |
156 | #define HIDIOCGDEVINFO _IOR('H', 0x03, struct hiddev_devinfo) |
157 | #define HIDIOCGSTRING _IOR('H', 0x04, struct hiddev_string_descriptor) |
158 | #define HIDIOCINITREPORT _IO('H', 0x05) |
159 | #define HIDIOCGNAME(len) _IOC(_IOC_READ, 'H', 0x06, len) |
160 | #define HIDIOCGREPORT _IOW('H', 0x07, struct hiddev_report_info) |
161 | #define HIDIOCSREPORT _IOW('H', 0x08, struct hiddev_report_info) |
162 | #define HIDIOCGREPORTINFO _IOWR('H', 0x09, struct hiddev_report_info) |
163 | #define HIDIOCGFIELDINFO _IOWR('H', 0x0A, struct hiddev_field_info) |
164 | #define HIDIOCGUSAGE _IOWR('H', 0x0B, struct hiddev_usage_ref) |
165 | #define HIDIOCSUSAGE _IOW('H', 0x0C, struct hiddev_usage_ref) |
166 | #define HIDIOCGUCODE _IOWR('H', 0x0D, struct hiddev_usage_ref) |
167 | #define HIDIOCGFLAG _IOR('H', 0x0E, int) |
168 | #define HIDIOCSFLAG _IOW('H', 0x0F, int) |
169 | #define HIDIOCGCOLLECTIONINDEX _IOW('H', 0x10, struct hiddev_usage_ref) |
170 | #define HIDIOCGCOLLECTIONINFO _IOWR('H', 0x11, struct hiddev_collection_info) |
171 | #define HIDIOCGPHYS(len) _IOC(_IOC_READ, 'H', 0x12, len) |
172 | |
173 | /* For writing/reading to multiple/consecutive usages */ |
174 | #define HIDIOCGUSAGES _IOWR('H', 0x13, struct hiddev_usage_ref_multi) |
175 | #define HIDIOCSUSAGES _IOW('H', 0x14, struct hiddev_usage_ref_multi) |
176 | |
177 | /* |
178 | * Flags to be used in HIDIOCSFLAG |
179 | */ |
180 | #define HIDDEV_FLAG_UREF 0x1 |
181 | #define HIDDEV_FLAG_REPORT 0x2 |
182 | #define HIDDEV_FLAGS 0x3 |
183 | |
184 | /* To traverse the input report descriptor info for a HID device, perform the |
185 | * following: |
186 | * |
187 | * rinfo.report_type = HID_REPORT_TYPE_INPUT; |
188 | * rinfo.report_id = HID_REPORT_ID_FIRST; |
189 | * ret = ioctl(fd, HIDIOCGREPORTINFO, &rinfo); |
190 | * |
191 | * while (ret >= 0) { |
192 | * for (i = 0; i < rinfo.num_fields; i++) { |
193 | * finfo.report_type = rinfo.report_type; |
194 | * finfo.report_id = rinfo.report_id; |
195 | * finfo.field_index = i; |
196 | * ioctl(fd, HIDIOCGFIELDINFO, &finfo); |
197 | * for (j = 0; j < finfo.maxusage; j++) { |
198 | * uref.report_type = rinfo.report_type; |
199 | * uref.report_id = rinfo.report_id; |
200 | * uref.field_index = i; |
201 | * uref.usage_index = j; |
202 | * ioctl(fd, HIDIOCGUCODE, &uref); |
203 | * ioctl(fd, HIDIOCGUSAGE, &uref); |
204 | * } |
205 | * } |
206 | * rinfo.report_id |= HID_REPORT_ID_NEXT; |
207 | * ret = ioctl(fd, HIDIOCGREPORTINFO, &rinfo); |
208 | * } |
209 | */ |
210 | |
211 | |
212 | #ifdef __KERNEL__ |
213 | |
214 | /* |
215 | * In-kernel definitions. |
216 | */ |
217 | |
218 | struct hid_device; |
219 | struct hid_usage; |
220 | struct hid_field; |
221 | struct hid_report; |
222 | |
223 | #ifdef CONFIG_USB_HIDDEV |
224 | int hiddev_connect(struct hid_device *hid, unsigned int force); |
225 | void hiddev_disconnect(struct hid_device *); |
226 | void hiddev_hid_event(struct hid_device *hid, struct hid_field *field, |
227 | struct hid_usage *usage, __s32 value); |
228 | void hiddev_report_event(struct hid_device *hid, struct hid_report *report); |
229 | #else |
230 | static inline int hiddev_connect(struct hid_device *hid, |
231 | unsigned int force) |
232 | { return -1; } |
233 | static inline void hiddev_disconnect(struct hid_device *hid) { } |
234 | static inline void hiddev_hid_event(struct hid_device *hid, struct hid_field *field, |
235 | struct hid_usage *usage, __s32 value) { } |
236 | static inline void hiddev_report_event(struct hid_device *hid, struct hid_report *report) { } |
237 | #endif |
238 | |
239 | #endif |
240 | #endif |
241 |
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