1 files changed, 92 insertions, 0 deletions
diff --git a/libs/common_time/local_clock.cpp b/libs/common_time/local_clock.cpp
new file mode 100644
index 0000000..a7c61fc
--- /dev/null
+++ b/libs/common_time/local_clock.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+#define LOG_TAG "common_time"
+#include <utils/Log.h>
+
+#include <assert.h>
+#include <stdint.h>
+
+#include <common_time/local_clock.h>
+#include <hardware/hardware.h>
+#include <hardware/local_time_hal.h>
+#include <utils/Errors.h>
+#include <utils/threads.h>
+
+namespace android {
+
+Mutex LocalClock::dev_lock_;
+local_time_hw_device_t* LocalClock::dev_ = NULL;
+
+LocalClock::LocalClock() {
+    int res;
+    const hw_module_t* mod;
+
+    AutoMutex lock(&dev_lock_);
+
+    if (dev_ != NULL)
+        return;
+
+    res = hw_get_module_by_class(LOCAL_TIME_HARDWARE_MODULE_ID, NULL, &mod);
+    if (res) {
+        ALOGE("Failed to open local time HAL module (res = %d)", res);
+    } else {
+        res = local_time_hw_device_open(mod, &dev_);
+        if (res) {
+            ALOGE("Failed to open local time HAL device (res = %d)", res);
+            dev_ = NULL;
+        }
+    }
+}
+
+bool LocalClock::initCheck() {
+    return (NULL != dev_);
+}
+
+int64_t LocalClock::getLocalTime() {
+    assert(NULL != dev_);
+    assert(NULL != dev_->get_local_time);
+
+    return dev_->get_local_time(dev_);
+}
+
+uint64_t LocalClock::getLocalFreq() {
+    assert(NULL != dev_);
+    assert(NULL != dev_->get_local_freq);
+
+    return dev_->get_local_freq(dev_);
+}
+
+status_t LocalClock::setLocalSlew(int16_t rate) {
+    assert(NULL != dev_);
+
+    if (!dev_->set_local_slew)
+        return INVALID_OPERATION;
+
+    return static_cast<status_t>(dev_->set_local_slew(dev_, rate));
+}
+
+int32_t LocalClock::getDebugLog(struct local_time_debug_event* records,
+                                int max_records) {
+    assert(NULL != dev_);
+
+    if (!dev_->get_debug_log)
+        return INVALID_OPERATION;
+
+    return dev_->get_debug_log(dev_, records, max_records);
+}
+
+}  // namespace android