From 7e37c47aff144de9a3d2b610f2ade64910db91d5 Mon Sep 17 00:00:00 2001
From: Cosmin Tanislav <demonsingur@gmail.com>
Date: Thu, 10 Feb 2022 22:04:32 +0200
Subject: [PATCH] dubai: Add UDFPS extension library

* Mark the pressed fingerprint layer.

Change-Id: I49891f89350839ff93ff1a762a83996bfd56ec18
---
 BoardConfig.mk                 |  3 +++
 fingerprint/Android.bp         | 11 +++++++++++
 fingerprint/UdfpsExtension.cpp | 19 +++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 fingerprint/UdfpsExtension.cpp

diff --git a/BoardConfig.mk b/BoardConfig.mk
index e7a37e2..3ae1078 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -25,6 +25,9 @@ TARGET_BOOTLOADER_BOARD_NAME := dubai
 # Bluetooth
 BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR := $(DEVICE_PATH)/bluetooth
 
+# Fingerprint
+TARGET_SURFACEFLINGER_UDFPS_LIB := //$(DEVICE_PATH):libudfps_extension.dubai
+
 # HIDL
 DEVICE_FRAMEWORK_COMPATIBILITY_MATRIX_FILE += $(DEVICE_PATH)/device_framework_matrix_dubai.xml
 DEVICE_MANIFEST_YUPIK_FILES += $(DEVICE_PATH)/manifest_dubai.xml
diff --git a/fingerprint/Android.bp b/fingerprint/Android.bp
index bb68900..f98b105 100644
--- a/fingerprint/Android.bp
+++ b/fingerprint/Android.bp
@@ -19,3 +19,14 @@ cc_binary {
         "android.hardware.biometrics.fingerprint@2.3",
     ],
 }
+
+cc_library_static {
+    name: "libudfps_extension.dubai",
+    srcs: ["UdfpsExtension.cpp"],
+    include_dirs: [
+        "frameworks/native/services/surfaceflinger/CompositionEngine/include"
+    ],
+    header_libs: [
+        "generated_kernel_headers",
+    ],
+}
diff --git a/fingerprint/UdfpsExtension.cpp b/fingerprint/UdfpsExtension.cpp
new file mode 100644
index 0000000..f51a9e3
--- /dev/null
+++ b/fingerprint/UdfpsExtension.cpp
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <compositionengine/UdfpsExtension.h>
+#include <display/drm/sde_drm.h>
+
+uint32_t getUdfpsZOrder(uint32_t z, bool touched) {
+    if (touched) {
+        z |= FOD_PRESSED_LAYER_ZORDER;
+    }
+    return z;
+}
+
+uint64_t getUdfpsUsageBits(uint64_t usageBits, bool) {
+    return usageBits;
+}