1/* 2 * Copyright (C) 2011 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#define LOG_TAG "common_time" 18#include <utils/Log.h> 19 20#include <assert.h> 21#include <stdint.h> 22 23#include <common_time/local_clock.h> 24#include <hardware/hardware.h> 25#include <hardware/local_time_hal.h> 26#include <utils/Errors.h> 27#include <utils/threads.h> 28 29namespace android { 30 31Mutex LocalClock::dev_lock_; 32local_time_hw_device_t* LocalClock::dev_ = NULL; 33 34LocalClock::LocalClock() { 35 int res; 36 const hw_module_t* mod; 37 38 AutoMutex lock(&dev_lock_); 39 40 if (dev_ != NULL) 41 return; 42 43 res = hw_get_module_by_class(LOCAL_TIME_HARDWARE_MODULE_ID, NULL, &mod); 44 if (res) { 45 ALOGE("Failed to open local time HAL module (res = %d)", res); 46 } else { 47 res = local_time_hw_device_open(mod, &dev_); 48 if (res) { 49 ALOGE("Failed to open local time HAL device (res = %d)", res); 50 dev_ = NULL; 51 } 52 } 53} 54 55bool LocalClock::initCheck() { 56 return (NULL != dev_); 57} 58 59int64_t LocalClock::getLocalTime() { 60 assert(NULL != dev_); 61 assert(NULL != dev_->get_local_time); 62 63 return dev_->get_local_time(dev_); 64} 65 66uint64_t LocalClock::getLocalFreq() { 67 assert(NULL != dev_); 68 assert(NULL != dev_->get_local_freq); 69 70 return dev_->get_local_freq(dev_); 71} 72 73status_t LocalClock::setLocalSlew(int16_t rate) { 74 assert(NULL != dev_); 75 76 if (!dev_->set_local_slew) 77 return INVALID_OPERATION; 78 79 return static_cast<status_t>(dev_->set_local_slew(dev_, rate)); 80} 81 82int32_t LocalClock::getDebugLog(struct local_time_debug_event* records, 83 int max_records) { 84 assert(NULL != dev_); 85 86 if (!dev_->get_debug_log) 87 return INVALID_OPERATION; 88 89 return dev_->get_debug_log(dev_, records, max_records); 90} 91 92} // namespace android 93