X6833B: Add power HAL extension and use xiaomi-touch to handle dt2w

Change-Id: I5c65e0df255853eb2b3018a27ceb807c111bc4df
Signed-off-by: dodyirawan85 <40514988+dodyirawan85@users.noreply.github.com>

BoardConfig.mk

@@ -116,6 +116,9 @@ TARGET_COPY_OUT_VENDOR_DLKM := vendor_dlkm
 TARGET_BOARD_PLATFORM := mt6789
 BOARD_HAS_MTK_HARDWARE := true
 
+# Power
+TARGET_POWERHAL_MODE_EXT := $(DEVICE_PATH)/power/power-mode.cpp
+
 # Properties
 TARGET_SYSTEM_PROP += $(CONFIGS_PATH)/properties/system.prop
 TARGET_VENDOR_PROP += $(CONFIGS_PATH)/properties/vendor.prop

power/power-mode.cpp

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2021 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <aidl/android/hardware/power/BnPower.h>
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <sys/ioctl.h>
+
+// defines from drivers/input/touchscreen/xiaomi/xiaomi_touch.h
+#define SET_CUR_VALUE 0
+#define Touch_Doubletap_Mode 14
+
+#define TOUCH_DEV_PATH "/dev/xiaomi-touch"
+#define TOUCH_ID 0
+#define TOUCH_MAGIC 0x5400
+#define TOUCH_IOC_SETMODE TOUCH_MAGIC + SET_CUR_VALUE
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace power {
+namespace impl {
+namespace mediatek {
+
+using ::aidl::android::hardware::power::Mode;
+
+bool isDeviceSpecificModeSupported(Mode type, bool* _aidl_return) {
+    switch (type) {
+        case Mode::DOUBLE_TAP_TO_WAKE:
+            *_aidl_return = true;
+            return true;
+        default:
+            return false;
+    }
+}
+
+bool setDeviceSpecificMode(Mode type, bool enabled) {
+    switch (type) {
+        case Mode::DOUBLE_TAP_TO_WAKE: {
+            int fd = open(TOUCH_DEV_PATH, O_RDWR);
+            int arg[3] = {TOUCH_ID, Touch_Doubletap_Mode, enabled ? 1 : 0};
+            ioctl(fd, TOUCH_IOC_SETMODE, &arg);
+            close(fd);
+            return true;
+        }
+        default:
+            return false;
+    }
+}
+
+}  // namespace mediatek
+}  // namespace impl
+}  // namespace power
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl

rootdir/etc/init/hw/init.project.rc

@@ -6,6 +6,10 @@ on init
     mkdir /mnt/media_rw/usbotg 0700 media_rw media_rw
     mkdir /storage/usbotg 0700 root root
 
+    # Set xiaomi touch permissions
+    chown system system /dev/xiaomi-touch
+    chmod 0660 /dev/xiaomi-touch
+
 on post-fs-data
 
 #Camera