David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 1999-2000 Vojtech Pavlik |
| 3 | * |
| 4 | * Sponsored by SuSE |
| 5 | */ |
| 6 | /* |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | * |
| 21 | * Should you need to contact me, the author, you can do so either by |
| 22 | * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail: |
| 23 | * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic |
| 24 | */ |
| 25 | #ifndef _UAPI_HIDDEV_H |
| 26 | #define _UAPI_HIDDEV_H |
| 27 | |
| 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 /* _UAPI_HIDDEV_H */ |