eqs: implement lineage touch hal

touch/.clang-format

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+BasedOnStyle: Google
+AccessModifierOffset: -2
+AllowShortFunctionsOnASingleLine: Inline
+ColumnLimit: 100
+CommentPragmas: NOLINT:.*
+DerivePointerAlignment: false
+IndentWidth: 4
+PointerAlignment: Left
+TabWidth: 4
+UseTab: Never
+PenaltyExcessCharacter: 32

touch/Android.bp

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+//
+// 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.
+
+cc_binary {
+    name: "vendor.lineage.touch@1.0-service.eqs",
+    vintf_fragments: ["vendor.lineage.touch@1.0-service.eqs.xml"],
+    init_rc: ["vendor.lineage.touch@1.0-service.eqs.rc"],
+    defaults: ["hidl_defaults"],
+    relative_install_path: "hw",
+    proprietary: true,
+    srcs: [
+        "HighTouchPollingRate.cpp",
+        "TouchscreenGesture.cpp",
+        "service.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "libhidlbase",
+        "libutils",
+        "vendor.lineage.touch@1.0",
+    ],
+}

touch/HighTouchPollingRate.cpp

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+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#define LOG_TAG "HighTouchPollingRateService"
+
+#include "HighTouchPollingRate.h"
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+
+namespace vendor {
+namespace lineage {
+namespace touch {
+namespace V1_0 {
+namespace implementation {
+
+const std::string kInterpolationPath = "/sys/class/touchscreen/primary/interpolation";
+
+Return<bool> HighTouchPollingRate::isEnabled() {
+    std::string buf;
+    if (!android::base::ReadFileToString(kInterpolationPath, &buf)) {
+        LOG(ERROR) << "Failed to read " << kInterpolationPath;
+        return false;
+    }
+    return std::stoi(android::base::Trim(buf)) == 1;
+}
+
+Return<bool> HighTouchPollingRate::setEnabled(bool enabled) {
+    if (!android::base::WriteStringToFile(std::to_string(enabled), kInterpolationPath)) {
+        LOG(ERROR) << "Failed to write " << kInterpolationPath;
+        return false;
+    }
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace touch
+}  // namespace lineage
+}  // namespace vendor

touch/HighTouchPollingRate.h

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+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <vendor/lineage/touch/1.0/IHighTouchPollingRate.h>
+
+namespace vendor {
+namespace lineage {
+namespace touch {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::Return;
+
+class HighTouchPollingRate : public IHighTouchPollingRate {
+  public:
+    // Methods from ::vendor::lineage::touch::V1_0::IHighTouchPollingRate follow.
+    Return<bool> isEnabled() override;
+    Return<bool> setEnabled(bool enabled) override;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace touch
+}  // namespace lineage
+}  // namespace vendor

touch/TouchscreenGesture.cpp

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+/*
+ * Copyright (C) 2019 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 "TouchscreenGestureService"
+
+#include <fstream>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+
+#include "TouchscreenGesture.h"
+
+namespace vendor {
+namespace lineage {
+namespace touch {
+namespace V1_0 {
+namespace implementation {
+
+Return<void> TouchscreenGesture::getSupportedGestures(getSupportedGestures_cb resultCb) {
+    std::vector<Gesture> gestures;
+    for (int32_t i = 0; i < std::size(kGestureNodes); ++i) {
+        gestures.push_back({i, kGestureNodes[i].name, kGestureNodes[i].keycode});
+    }
+    resultCb(gestures);
+    return Void();
+}
+
+Return<bool> TouchscreenGesture::setGestureEnabled(
+    const ::vendor::lineage::touch::V1_0::Gesture& gesture, bool enable) {
+    if (gesture.id >= std::size(kGestureNodes)) {
+        return false;
+    }
+
+    if (!android::base::WriteStringToFile(enable ? kGestureNodes[gesture.id].enable : kGestureNodes[gesture.id].disable,
+                                          kGestureNodes[gesture.id].path)) {
+        LOG(ERROR) << "Writing to file " << kGestureNodes[gesture.id].path << " failed";
+        return false;
+    }
+
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace touch
+}  // namespace lineage
+}  // namespace vendor

touch/TouchscreenGesture.h

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+/*
+ * Copyright (C) 2019 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.
+ */
+
+#pragma once
+
+#include <vendor/lineage/touch/1.0/ITouchscreenGesture.h>
+
+#include <map>
+
+namespace {
+struct GestureInfo {
+    int32_t keycode;
+    const char* name;
+    const char* path;
+    const char* enable;
+    const char* disable;
+};
+
+constexpr GestureInfo kGestureNodes[] = {
+        {59,
+         "Single Tap",
+         "/sys/class/touchscreen/primary/gesture",
+         "33", "32"},
+};
+}  // anonymous namespace
+
+namespace vendor {
+namespace lineage {
+namespace touch {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+class TouchscreenGesture : public ITouchscreenGesture {
+   public:   
+    // Methods from ::vendor::lineage::touch::V1_0::ITouchscreenGesture follow.
+    Return<void> getSupportedGestures(getSupportedGestures_cb resultCb) override;
+    Return<bool> setGestureEnabled(
+        const ::vendor::lineage::touch::V1_0::Gesture& gesture, bool enable) override;
+    
+   private:
+    std::map<int32_t, GestureInfo> kGestureInfoMap;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace touch
+}  // namespace lineage
+}  // namespace vendor

touch/service.cpp

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+/*
+ * 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 "lineage.touch@1.0-service.lge_msmnile"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "HighTouchPollingRate.h"
+#include "TouchscreenGesture.h"
+
+using ::vendor::lineage::touch::V1_0::IHighTouchPollingRate;
+using ::vendor::lineage::touch::V1_0::ITouchscreenGesture;
+using ::vendor::lineage::touch::V1_0::implementation::HighTouchPollingRate;
+using ::vendor::lineage::touch::V1_0::implementation::TouchscreenGesture;
+
+int main() {
+    android::sp<IHighTouchPollingRate> highTouchPollingRate = new HighTouchPollingRate();
+    android::sp<ITouchscreenGesture> touchscreenGesture = new TouchscreenGesture();
+
+    android::hardware::configureRpcThreadpool(1, true /*callerWillJoin*/);
+
+    if (highTouchPollingRate->registerAsService() != android::OK) {
+        LOG(ERROR) << "Cannot register touchscreen glove HAL service.";
+        return 1;
+    }
+
+    if (touchscreenGesture->registerAsService() != android::OK) {
+        LOG(ERROR) << "Cannot register touchscreen gesture HAL service.";
+        return 1;
+    }
+
+    LOG(INFO) << "Touchscreen HAL service ready.";
+
+    android::hardware::joinRpcThreadpool();
+
+    LOG(ERROR) << "Touchscreen HAL service failed to join thread pool.";
+    return 1;
+}

touch/vendor.lineage.touch@1.0-service.eqs.rc

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+service vendor.touch-hal-1-0 /vendor/bin/hw/vendor.lineage.touch@1.0-service.eqs
+    interface vendor.lineage.touch@1.0::IGloveMode default
+    interface vendor.lineage.touch@1.0::ITouchscreenGesture default
+    class hal
+    user system
+    group system

touch/vendor.lineage.touch@1.0-service.eqs.xml

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+<manifest version="1.0" type="device">
+    <hal format="hidl" optional="true">
+        <name>vendor.lineage.touch</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+            <name>IHighTouchPollingRate</name>
+            <instance>default</instance>
+        </interface>
+        <interface>
+            <name>ITouchscreenGesture</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>