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 35bool SensorBase::PROCESS_VERBOSE = false; 36bool SensorBase::EXTRA_VERBOSE = false; 37bool SensorBase::SYSFS_VERBOSE = false; 38 39bool SensorBase::FUNC_ENTRY = false; 40bool SensorBase::HANDLER_ENTRY = false; 41bool SensorBase::ENG_VERBOSE = false; 42bool SensorBase::INPUT_DATA = false; 43bool SensorBase::HANDLER_DATA = false; 44bool SensorBase::DEBUG_BATCHING = false; 45 46SensorBase::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 96SensorBase::~SensorBase() 97{ 98 if (data_fd >= 0) { 99 close(data_fd); 100 } 101 if (dev_fd >= 0) { 102 close(dev_fd); 103 } 104} 105 106int 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 115int SensorBase::close_device() 116{ 117 if (dev_fd >= 0) { 118 close(dev_fd); 119 dev_fd = -1; 120 } 121 return 0; 122} 123 124int SensorBase::getFd() const 125{ 126 if (!data_name) { 127 return dev_fd; 128 } 129 return data_fd; 130} 131 132int SensorBase::setDelay(int32_t handle, int64_t ns) 133{ 134 return 0; 135} 136 137bool SensorBase::hasPendingEvents() const 138{ 139 return false; 140} 141 142int64_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 150int 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 193int SensorBase::enable(int32_t handle, int enabled) 194{ 195 return 0; 196} 197 198int SensorBase::query(int what, int* value) 199{ 200 return 0; 201} 202 203int SensorBase::batch(int handle, int flags, int64_t period_ns, int64_t timeout) 204{ 205 return 0; 206} 207 208int SensorBase::flush(int handle) 209{ 210 return 0; 211} 212