1 /**
2  * Copyright 2017 Google 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 "build_utils.hpp"
18 
19 namespace pid_control
20 {
21 
22 static constexpr auto external_sensor =
23     "/xyz/openbmc_project/extsensors/";                         // type/
24 static constexpr auto openbmc_sensor = "/xyz/openbmc_project/"; // type/
25 static constexpr auto sysfs = "/sys/";
26 
27 IOInterfaceType getWriteInterfaceType(const std::string& path)
28 {
29     if (path.empty() || "None" == path)
30     {
31         return IOInterfaceType::NONE;
32     }
33 
34     if (path.find(sysfs) != std::string::npos)
35     {
36         // A sysfs read sensor.
37         return IOInterfaceType::SYSFS;
38     }
39 
40     if (path.find(openbmc_sensor) != std::string::npos)
41     {
42         return IOInterfaceType::DBUSACTIVE;
43     }
44 
45     return IOInterfaceType::UNKNOWN;
46 }
47 
48 IOInterfaceType getReadInterfaceType(const std::string& path)
49 {
50     if (path.empty() || "None" == path)
51     {
52         return IOInterfaceType::NONE;
53     }
54 
55     if (path.find(external_sensor) != std::string::npos)
56     {
57         return IOInterfaceType::EXTERNAL;
58     }
59 
60     if (path.find(openbmc_sensor) != std::string::npos)
61     {
62         return IOInterfaceType::DBUSPASSIVE;
63     }
64 
65     if (path.find(sysfs) != std::string::npos)
66     {
67         return IOInterfaceType::SYSFS;
68     }
69 
70     return IOInterfaceType::UNKNOWN;
71 }
72 
73 } // namespace pid_control
74