1 /*
2  * Copyright (C) 2017 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 
17 #ifndef CHRE_PLATFORM_SLPI_SEE_POWER_CONTROL_MANAGER_BASE_H_
18 #define CHRE_PLATFORM_SLPI_SEE_POWER_CONTROL_MANAGER_BASE_H_
19 
20 #include "chre/platform/atomic.h"
21 
22 #ifdef CHRE_THREAD_UTIL_ENABLED
23 extern "C" {
24 #include "sns_client_thread_util.h"
25 }  // extern "C"
26 #endif  // CHRE_THREAD_UTIL_ENABLED
27 
28 namespace chre {
29 
30 class PowerControlManagerBase {
31  public:
32   PowerControlManagerBase();
33   ~PowerControlManagerBase();
34 
35   /**
36    * Makes a power mode request. An actual vote to the SLPI power manager may
37    * not be cast depending on current power mode and mBigImageRefCount.
38    *
39    * @param bigImage Whether to request bigImage or not.
40    *
41    * @return true if the vote returned success.
42    */
43   bool voteBigImage(bool bigImage);
44 
45   /**
46    * Sets the AP awake/suspended state and posts an event to interested
47    * nanoapps. This method should only be invoked by the SEE helper as a
48    * result of an event from the remote_proc_state sensor.
49    *
50    * @param awake true if the AP is awake, false otherwise
51    */
52   void onHostWakeSuspendEvent(bool awake);
53 
54  protected:
55   //! Set to true if the host is awake, false if suspended.
56   AtomicBool mHostIsAwake;
57 
58 #ifdef CHRE_THREAD_UTIL_ENABLED
59   //! Set to true if the thread is currently idle (no pending events),
60   //! false otherwise.
61   bool mIsThreadIdle = true;
62 
63   //! A pointer to the client to compute thread utilization
64   sns_thread_util_client *mThreadUtilClient = nullptr;
65 #endif  // CHRE_THREAD_UTIL_ENABLED
66 };
67 
68 }  // namespace chre
69 
70 #endif  // CHRE_PLATFORM_SLPI_SEE_POWER_CONTROL_MANAGER_BASE_H_
71