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 "reset_button.hpp"
18 
19 #include "xyz/openbmc_project/Chassis/Buttons/Reset/server.hpp"
20 
21 // add the button iface class to registry
22 static ButtonIFRegister<ResetButton> buttonRegister;
23 
24 void ResetButton::simPress()
25 {
26     pressed();
27 }
28 
29 void ResetButton::handleEvent(sd_event_source* /* es */, int fd,
30                               uint32_t /* revents */)
31 {
32     int n = -1;
33     char buf = '0';
34 
35     n = ::lseek(fd, 0, SEEK_SET);
36 
37     if (n < 0)
38     {
39         phosphor::logging::log<phosphor::logging::level::ERR>(
40             "RESET_BUTTON: lseek error!");
41 
42         return;
43     }
44 
45     n = ::read(fd, &buf, sizeof(buf));
46     if (n < 0)
47     {
48         phosphor::logging::log<phosphor::logging::level::ERR>(
49             "RESET_BUTTON: read error!");
50         return;
51     }
52 
53     if (buf == '0')
54     {
55         phosphor::logging::log<phosphor::logging::level::DEBUG>(
56             "RESET_BUTTON: pressed");
57         // emit pressed signal
58         pressed();
59     }
60     else
61     {
62         phosphor::logging::log<phosphor::logging::level::DEBUG>(
63             "RESET_BUTTON: released");
64         // released
65         released();
66     }
67 
68     return;
69 }
70