1 files changed, 55 insertions, 0 deletions
diff --git a/services/surfaceflinger/DisplayHardware/PowerHAL.cpp b/services/surfaceflinger/DisplayHardware/PowerHAL.cpp
new file mode 100644
index 0000000..0cb47d5
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/PowerHAL.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2012 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 <stdint.h>
+#include <sys/types.h>
+
+#include <cutils/log.h>
+#include <utils/Errors.h>
+
+#include "PowerHAL.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+PowerHAL::PowerHAL() : mPowerModule(0) {
+    int err = hw_get_module(POWER_HARDWARE_MODULE_ID,
+            (const hw_module_t **)&mPowerModule);
+    ALOGW_IF(err, "%s module not found", POWER_HARDWARE_MODULE_ID);
+}
+
+PowerHAL::~PowerHAL() {
+}
+
+status_t PowerHAL::initCheck() const {
+    return mPowerModule ? NO_ERROR : NO_INIT;
+}
+
+status_t PowerHAL::vsyncHint(bool enabled) {
+    if (!mPowerModule) {
+        return NO_INIT;
+    }
+    if (mPowerModule->common.module_api_version >= POWER_MODULE_API_VERSION_0_2) {
+        if (mPowerModule->powerHint) {
+            mPowerModule->powerHint(mPowerModule, POWER_HINT_VSYNC, (void*)enabled);
+        }
+    }
+    return NO_ERROR;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+