1 /* 2 * Copyright (C) 2014 Invensense, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <fcntl.h> 18 #include <errno.h> 19 #include <math.h> 20 #include <poll.h> 21 #include <unistd.h> 22 #include <stdlib.h> 23 #include <dirent.h> 24 #include <sys/select.h> 25 #include <cutils/log.h> 26 #include <linux/input.h> 27 28 #include <cutils/properties.h> 29 30 #include "SensorBase.h" 31 32 /*****************************************************************************/ 33 34 // static vars 35 bool SensorBase::PROCESS_VERBOSE = false; 36 bool SensorBase::EXTRA_VERBOSE = false; 37 bool SensorBase::SYSFS_VERBOSE = false; 38 39 bool SensorBase::FUNC_ENTRY = false; 40 bool SensorBase::HANDLER_ENTRY = false; 41 bool SensorBase::ENG_VERBOSE = false; 42 bool SensorBase::INPUT_DATA = false; 43 bool SensorBase::HANDLER_DATA = false; 44 bool SensorBase::DEBUG_BATCHING = false; 45 46 SensorBase::SensorBase(const char* dev_name, 47 const char* data_name) 48 : dev_name(dev_name), 49 data_name(data_name), 50 dev_fd(-1), 51 data_fd(-1) 52 { 53 if (data_name) { 54 data_fd = openInput(data_name); 55 } 56 57 char value[PROPERTY_VALUE_MAX]; 58 property_get("invn.hal.verbose.basic", value, "0"); 59 if (atoi(value)) { 60 PROCESS_VERBOSE = true; 61 } 62 property_get("invn.hal.verbose.extra", value, "0"); 63 if (atoi(value)) { 64 EXTRA_VERBOSE = true; 65 } 66 property_get("invn.hal.verbose.sysfs", value, "0"); 67 if (atoi(value)) { 68 SYSFS_VERBOSE = true; 69 } 70 property_get("invn.hal.verbose.engineering", value, "0"); 71 if (atoi(value)) { 72 ENG_VERBOSE = true; 73 } 74 property_get("invn.hal.entry.function", value, "0"); 75 if (atoi(value)) { 76 FUNC_ENTRY = true; 77 } 78 property_get("invn.hal.entry.handler", value, "0"); 79 if (atoi(value)) { 80 HANDLER_ENTRY = true; 81 } 82 property_get("invn.hal.data.input", value, "0"); 83 if (atoi(value)) { 84 INPUT_DATA = true; 85 } 86 property_get("invn.hal.data.handler", value, "0"); 87 if (atoi(value)) { 88 HANDLER_DATA = true; 89 } 90 property_get("invn.hal.debug.batching", value, "0"); 91 if (atoi(value)) { 92 DEBUG_BATCHING = true; 93 } 94 } 95 96 SensorBase::~SensorBase() 97 { 98 if (data_fd >= 0) { 99 close(data_fd); 100 } 101 if (dev_fd >= 0) { 102 close(dev_fd); 103 } 104 } 105 106 int SensorBase::open_device() 107 { 108 if (dev_fd<0 && dev_name) { 109 dev_fd = open(dev_name, O_RDONLY); 110 LOGE_IF(dev_fd<0, "Couldn't open %s (%s)", dev_name, strerror(errno)); 111 } 112 return 0; 113 } 114 115 int SensorBase::close_device() 116 { 117 if (dev_fd >= 0) { 118 close(dev_fd); 119 dev_fd = -1; 120 } 121 return 0; 122 } 123 124 int SensorBase::getFd() const 125 { 126 if (!data_name) { 127 return dev_fd; 128 } 129 return data_fd; 130 } 131 132 int SensorBase::setDelay(int32_t handle, int64_t ns) 133 { 134 return 0; 135 } 136 137 bool SensorBase::hasPendingEvents() const 138 { 139 return false; 140 } 141 142 int64_t SensorBase::getTimestamp() 143 { 144 struct timespec t; 145 t.tv_sec = t.tv_nsec = 0; 146 clock_gettime(CLOCK_MONOTONIC, &t); 147 return int64_t(t.tv_sec) * 1000000000LL + t.tv_nsec; 148 } 149 150 int SensorBase::openInput(const char *inputName) 151 { 152 int fd = -1; 153 const char *dirname = "/dev/input"; 154 char devname[PATH_MAX]; 155 char *filename; 156 DIR *dir; 157 struct dirent *de; 158 dir = opendir(dirname); 159 if(dir == NULL) 160 return -1; 161 strcpy(devname, dirname); 162 filename = devname + strlen(devname); 163 *filename++ = '/'; 164 while((de = readdir(dir))) { 165 if(de->d_name[0] == '.' && 166 (de->d_name[1] == '\0' || 167 (de->d_name[1] == '.' && de->d_name[2] == '\0'))) 168 continue; 169 strcpy(filename, de->d_name); 170 fd = open(devname, O_RDONLY); 171 LOGV_IF(EXTRA_VERBOSE, "path open %s", devname); 172 LOGI("path open %s", devname); 173 if (fd >= 0) { 174 char name[80]; 175 if (ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) < 1) { 176 name[0] = '\0'; 177 } 178 LOGV_IF(EXTRA_VERBOSE, "name read %s", name); 179 if (!strcmp(name, inputName)) { 180 strcpy(input_name, filename); 181 break; 182 } else { 183 close(fd); 184 fd = -1; 185 } 186 } 187 } 188 closedir(dir); 189 LOGE_IF(fd < 0, "couldn't find '%s' input device", inputName); 190 return fd; 191 } 192 193 int SensorBase::enable(int32_t handle, int enabled) 194 { 195 return 0; 196 } 197 198 int SensorBase::query(int what, int* value) 199 { 200 return 0; 201 } 202 203 int SensorBase::batch(int handle, int flags, int64_t period_ns, int64_t timeout) 204 { 205 return 0; 206 } 207 208 int SensorBase::flush(int handle) 209 { 210 return 0; 211 } 212
