1 #ifndef __UHID_H_ 2 #define __UHID_H_ 3 4 /* 5 * User-space I/O driver support for HID subsystem 6 * Copyright (c) 2012 David Herrmann 7 */ 8 9 /* 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the Free 12 * Software Foundation; either version 2 of the License, or (at your option) 13 * any later version. 14 */ 15 16 /* 17 * Public header for user-space communication. We try to keep every structure 18 * aligned but to be safe we also use __attribute__((__packed__)). Therefore, 19 * the communication should be ABI compatible even between architectures. 20 */ 21 22 #include <linux/input.h> 23 #include <linux/types.h> 24 #include <linux/hid.h> 25 26 enum uhid_event_type { 27 UHID_CREATE, 28 UHID_DESTROY, 29 UHID_START, 30 UHID_STOP, 31 UHID_OPEN, 32 UHID_CLOSE, 33 UHID_OUTPUT, 34 UHID_OUTPUT_EV, /* obsolete! */ 35 UHID_INPUT, 36 UHID_FEATURE, 37 UHID_FEATURE_ANSWER, 38 UHID_CREATE2, 39 UHID_INPUT2, 40 }; 41 42 struct uhid_create_req { 43 __u8 name[128]; 44 __u8 phys[64]; 45 __u8 uniq[64]; 46 __u8 __user *rd_data; 47 __u16 rd_size; 48 49 __u16 bus; 50 __u32 vendor; 51 __u32 product; 52 __u32 version; 53 __u32 country; 54 } __attribute__((__packed__)); 55 56 struct uhid_create2_req { 57 __u8 name[128]; 58 __u8 phys[64]; 59 __u8 uniq[64]; 60 __u16 rd_size; 61 __u16 bus; 62 __u32 vendor; 63 __u32 product; 64 __u32 version; 65 __u32 country; 66 __u8 rd_data[HID_MAX_DESCRIPTOR_SIZE]; 67 } __attribute__((__packed__)); 68 69 #define UHID_DATA_MAX 4096 70 71 enum uhid_report_type { 72 UHID_FEATURE_REPORT, 73 UHID_OUTPUT_REPORT, 74 UHID_INPUT_REPORT, 75 }; 76 77 struct uhid_input_req { 78 __u8 data[UHID_DATA_MAX]; 79 __u16 size; 80 } __attribute__((__packed__)); 81 82 struct uhid_input2_req { 83 __u16 size; 84 __u8 data[UHID_DATA_MAX]; 85 } __attribute__((__packed__)); 86 87 struct uhid_output_req { 88 __u8 data[UHID_DATA_MAX]; 89 __u16 size; 90 __u8 rtype; 91 } __attribute__((__packed__)); 92 93 /* Obsolete! Newer kernels will no longer send these events but instead convert 94 * it into raw output reports via UHID_OUTPUT. */ 95 struct uhid_output_ev_req { 96 __u16 type; 97 __u16 code; 98 __s32 value; 99 } __attribute__((__packed__)); 100 101 struct uhid_feature_req { 102 __u32 id; 103 __u8 rnum; 104 __u8 rtype; 105 } __attribute__((__packed__)); 106 107 struct uhid_feature_answer_req { 108 __u32 id; 109 __u16 err; 110 __u16 size; 111 __u8 data[UHID_DATA_MAX]; 112 } __attribute__((__packed__)); 113 114 struct uhid_event { 115 __u32 type; 116 117 union { 118 struct uhid_create_req create; 119 struct uhid_input_req input; 120 struct uhid_output_req output; 121 struct uhid_output_ev_req output_ev; 122 struct uhid_feature_req feature; 123 struct uhid_feature_answer_req feature_answer; 124 struct uhid_create2_req create2; 125 struct uhid_input2_req input2; 126 } u; 127 } __attribute__((__packed__)); 128 129 #endif /* __UHID_H_ */ 130