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 (at) 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 #endif 213
