gts3l-common: power: Add power_mode_ext for enabling hints

In common power hal this (and other) hints are disabled.
To not interfere with common implementation, add additional
logic to handle this hint by calling the existing implementation on
power-8996.c.

Refers this commit:
4c186bc66e

Signed-off-by: Deokgyu Yang <secugyu@gmail.com>

BoardConfigCommon.mk

@@ -158,6 +158,7 @@ TARGET_PROVIDES_KEYMASTER := true
 # Power
 TARGET_USES_INTERACTION_BOOST := true
 TARGET_POWERHAL_SET_INTERACTIVE_EXT := $(COMMON_PATH)/power_ext/power_interactive_ext.c
+TARGET_POWERHAL_MODE_EXT := $(COMMON_PATH)/power_ext/power_mode_ext.cpp
 
 # Properties
 TARGET_SYSTEM_PROP += $(COMMON_PATH)/system.prop

power_ext/power_mode_ext.cpp

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2020 The LineageOS 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 "PowerHAL_Mode_Ext"
+#include <android-base/file.h>
+#include <log/log.h>
+
+#include <aidl/android/hardware/power/BnPower.h>
+
+#include "power-common.h"
+
+using ::aidl::android::hardware::power::Mode;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace power {
+namespace impl {
+
+bool isDeviceSpecificModeSupported(Mode type, bool* _aidl_return) {
+    switch (type) {
+            case Mode::LAUNCH:
+            *_aidl_return = true;
+            return true;
+        default:
+            return false;
+    }
+}
+
+bool setDeviceSpecificMode(Mode type, bool enabled) {
+    switch (type) {
+        case Mode::LAUNCH:
+            power_hint(POWER_HINT_LAUNCH, enabled ? &enabled : NULL);
+            return true;
+        default:
+            return false;
+    }
+}
+
+}  // namespace impl
+}  // namespace power
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl