sm7125: fod: add surfaceflinger extension lib

Change-Id: I51fb56c0a20e3cac83afb46ed6a6e2f967159d18

BoardConfigCommon.mk

@@ -147,6 +147,9 @@ AUDIOSERVER_MULTILIB := 32
 # Keymaster
 TARGET_KEYMASTER_VARIANT := samsung
 
+# FOD
+TARGET_SURFACEFLINGER_FOD_LIB := //$(COMMON_PATH):libfod_extension.sm7125
+
 # HIDL manifests
 DEVICE_MANIFEST_FILE := $(COMMON_PATH)/configs/manifest.xml
 DEVICE_FRAMEWORK_COMPATIBILITY_MATRIX_FILE := $(COMMON_PATH)/configs/framework_compatibility_matrix.xml

fod/Android.bp

@@ -0,0 +1,7 @@
+cc_library_static {
+    name: "libfod_extension.sm7125",
+    srcs: ["FodExtension.cpp"],
+    include_dirs: [
+        "frameworks/native/services/surfaceflinger/CompositionEngine/include"
+    ],
+}

fod/FingerprintInscreen.cpp

@@ -24,8 +24,8 @@
 
 #define FINGERPRINT_ACQUIRED_VENDOR 6
 
-#define BRIGHTNESS_PATH "/sys/class/backlight/panel0-backlight/brightness"
 #define TSP_CMD_PATH "/sys/class/sec/tsp/cmd"
+#define MASK_BRIGHTNESS_PATH "/sys/class/lcd/panel/mask_brightness"
 
 #define SEM_FINGER_STATE 22
 #define SEM_PARAM_PRESSED 2
@@ -70,6 +70,7 @@ static hidl_vec<int8_t> stringToVec(const std::string& str) {
 
 FingerprintInscreen::FingerprintInscreen() {
     mSehBiometricsFingerprintService = ISehBiometricsFingerprint::getService();
+    set(MASK_BRIGHTNESS_PATH, "319");
 }
 
 void FingerprintInscreen::requestResult(int, const hidl_vec<int8_t>&) {
@@ -85,8 +86,6 @@ Return<void> FingerprintInscreen::onFinishEnroll() {
 }
 
 Return<void> FingerprintInscreen::onPress() {
-    mPreviousBrightness = get<std::string>(BRIGHTNESS_PATH, "");
-    set(BRIGHTNESS_PATH, "425");
     set(TSP_CMD_PATH, "fod_enable,1,1,0");
     mSehBiometricsFingerprintService->sehRequest(SEM_FINGER_STATE,
         SEM_PARAM_PRESSED, stringToVec(SEM_AOSP_FQNAME), FingerprintInscreen::requestResult);
@@ -97,10 +96,6 @@ Return<void> FingerprintInscreen::onRelease() {
     mSehBiometricsFingerprintService->sehRequest(SEM_FINGER_STATE, 
         SEM_PARAM_RELEASED, stringToVec(SEM_AOSP_FQNAME), FingerprintInscreen::requestResult);
     set(TSP_CMD_PATH, "fod_enable,0");
-    if (!mPreviousBrightness.empty()) {
-        set(BRIGHTNESS_PATH, mPreviousBrightness);
-        mPreviousBrightness = "";
-    }
     return Void();
 }
 
@@ -110,10 +105,6 @@ Return<void> FingerprintInscreen::onShowFODView() {
 
 Return<void> FingerprintInscreen::onHideFODView() {
     set(TSP_CMD_PATH, "fod_enable,0");
-    if (!mPreviousBrightness.empty()) {
-        set(BRIGHTNESS_PATH, mPreviousBrightness);
-        mPreviousBrightness = "";
-    }
     return Void();
 }
 

fod/FodExtension.cpp

@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+#include <compositionengine/FodExtension.h>
+
+uint32_t getFodZOrder(uint32_t z, bool touched) {
+    (void) touched;
+    return z;
+}
+
+uint32_t getFodUsageBits(uint32_t usageBits, bool touched) {
+    if (touched) {
+        usageBits |= 0x400000000LL;
+    }
+    return usageBits;
+}