| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "chre/platform/slpi/system_time_util.h" |
| |
| #include "chre/util/time.h" |
| |
| extern "C" { |
| |
| #include "uTimetick.h" |
| |
| } // extern "C" |
| |
| namespace chre { |
| |
| namespace { |
| |
| const uint64_t kClockFreq = uTimetick_CvtToTicks(1, T_SEC); |
| |
| } // anonymous namespace |
| |
| uint64_t getNanosecondsFromQTimerTicks(uint64_t ticks) { |
| uint64_t nsec = 0; |
| if (ticks >= kClockFreq) { |
| uint64_t seconds = (ticks / kClockFreq); |
| ticks %= kClockFreq; |
| |
| nsec = (seconds * kOneSecondInNanoseconds); |
| } |
| nsec += (ticks * kOneSecondInNanoseconds) / kClockFreq; |
| return nsec; |
| } |
| |
| } // namespace chre |