1 /*
2 // Copyright (c) 2018 Intel Corporation
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 "power_button.hpp"
18 
19 // add the button iface class to registry
20 static ButtonIFRegister<PowerButton> buttonRegister;
21 
22 void PowerButton::simPress()
23 {
24     pressed();
25 }
26 
27 void PowerButton::simLongPress()
28 {
29     pressedLong();
30 }
31 
32 void PowerButton::updatePressedTime()
33 {
34     pressedTime = std::chrono::steady_clock::now();
35 }
36 
37 auto PowerButton::getPressTime() const
38 {
39     return pressedTime;
40 }
41 
42 void PowerButton::handleEvent(sd_event_source* es, int fd, uint32_t revents)
43 {
44 
45     int n = -1;
46     char buf = '0';
47 
48     n = ::lseek(fd, 0, SEEK_SET);
49 
50     if (n < 0)
51     {
52         phosphor::logging::log<phosphor::logging::level::ERR>(
53             "POWER_BUTTON: lseek error!");
54         return;
55     }
56 
57     n = ::read(fd, &buf, sizeof(buf));
58     if (n < 0)
59     {
60         phosphor::logging::log<phosphor::logging::level::ERR>(
61             "POWER_BUTTON: read error!");
62         return;
63     }
64 
65     if (buf == '0')
66     {
67         phosphor::logging::log<phosphor::logging::level::DEBUG>(
68             "POWER_BUTTON: pressed");
69 
70         updatePressedTime();
71         // emit pressed signal
72         pressed();
73     }
74     else
75     {
76         phosphor::logging::log<phosphor::logging::level::DEBUG>(
77             "POWER_BUTTON: released");
78 
79         auto now = std::chrono::steady_clock::now();
80         auto d = std::chrono::duration_cast<std::chrono::milliseconds>(
81             now - getPressTime());
82 
83         if (d > std::chrono::milliseconds(LONG_PRESS_TIME_MS))
84         {
85             pressedLong();
86         }
87         else
88         {
89             // released
90             released();
91         }
92     }
93 }
94