1 /*
2  * Copyright (C) 2012 The Android Open Source Project
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 #include <errno.h>
17 #include <string.h>
18 #include <sys/types.h>
19 #include <sys/stat.h>
20 #include <fcntl.h>
21 
22 #define LOG_TAG "Legacy PowerHAL"
23 #include <utils/Log.h>
24 
25 #include <hardware/hardware.h>
26 #include <hardware/power.h>
27 
28 // We only support clang and g++.
29 #define UNUSED_ARGUMENT __attribute((unused))
30 
31 static void power_init(struct power_module *module UNUSED_ARGUMENT)
32 {
33 }
34 
35 static void power_set_interactive(struct power_module *module UNUSED_ARGUMENT,
36                                   int on UNUSED_ARGUMENT)
37 {
38 }
39 
40 static void power_hint(struct power_module *module UNUSED_ARGUMENT,
41                        power_hint_t hint,
42                        void *data UNUSED_ARGUMENT) {
43     switch (hint) {
44     default:
45         break;
46     }
47 }
48 
49 static struct hw_module_methods_t power_module_methods = {
50     .open = NULL,
51 };
52 
53 struct power_module HAL_MODULE_INFO_SYM = {
54     .common = {
55         .tag = HARDWARE_MODULE_TAG,
56         .module_api_version = POWER_MODULE_API_VERSION_0_2,
57         .hal_api_version = HARDWARE_HAL_API_VERSION,
58         .id = POWER_HARDWARE_MODULE_ID,
59         .name = "Default Power HAL",
60         .author = "The Android Open Source Project",
61         .methods = &power_module_methods,
62     },
63 
64     .init = power_init,
65     .setInteractive = power_set_interactive,
66     .powerHint = power_hint,
67 };
68