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
SensorBase(const char * dev_name,const char * data_name)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
~SensorBase()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
open_device()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
close_device()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
getFd() const124 int SensorBase::getFd() const
125 {
126 if (!data_name) {
127 return dev_fd;
128 }
129 return data_fd;
130 }
131
setDelay(int32_t handle,int64_t ns)132 int SensorBase::setDelay(int32_t handle, int64_t ns)
133 {
134 return 0;
135 }
136
hasPendingEvents() const137 bool SensorBase::hasPendingEvents() const
138 {
139 return false;
140 }
141
getTimestamp()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
openInput(const char * inputName)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
enable(int32_t handle,int enabled)193 int SensorBase::enable(int32_t handle, int enabled)
194 {
195 return 0;
196 }
197
query(int what,int * value)198 int SensorBase::query(int what, int* value)
199 {
200 return 0;
201 }
202
batch(int handle,int flags,int64_t period_ns,int64_t timeout)203 int SensorBase::batch(int handle, int flags, int64_t period_ns, int64_t timeout)
204 {
205 return 0;
206 }
207
flush(int handle)208 int SensorBase::flush(int handle)
209 {
210 return 0;
211 }
212