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
29 namespace android {
30
31 Mutex LocalClock::dev_lock_;
32 local_time_hw_device_t* LocalClock::dev_ = NULL;
33
LocalClock()34 LocalClock::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
initCheck()55 bool LocalClock::initCheck() {
56 return (NULL != dev_);
57 }
58
getLocalTime()59 int64_t LocalClock::getLocalTime() {
60 assert(NULL != dev_);
61 assert(NULL != dev_->get_local_time);
62
63 return dev_->get_local_time(dev_);
64 }
65
getLocalFreq()66 uint64_t LocalClock::getLocalFreq() {
67 assert(NULL != dev_);
68 assert(NULL != dev_->get_local_freq);
69
70 return dev_->get_local_freq(dev_);
71 }
72
setLocalSlew(int16_t rate)73 status_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
getDebugLog(struct local_time_debug_event * records,int max_records)82 int32_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