sm8250-common: Implement HighTouchPollingRate for supported devices

Signed-off-by: electimon <[email protected]>
Change-Id: I2c6623f18e0b5dbbe165c699b826fce68f9050eb

lineagehw/touch/Android.bp

@@ -17,6 +17,7 @@ soong_config_module_type {
     name: "moto_kona_touch_hal",
     module_type: "cc_defaults",
     config_namespace: "MOTO_KONA_TOUCH",
+    bool_variables: ["USE_TOUCH_POLLING_RATE"],
     value_variables: ["SINGLE_TAP_PATH"],
     properties: [
         "cppflags",
@@ -27,6 +28,10 @@ soong_config_module_type {
 moto_kona_touch_hal {
     name: "moto_kona_touch_hal_cc_defaults",
     soong_config_variables: {
+        USE_TOUCH_POLLING_RATE: {
+            cppflags: ["-DUSE_TOUCH_POLLING_RATE"],
+            srcs: ["HighTouchPollingRate.cpp"],
+        },
         SINGLE_TAP_PATH: {
             cppflags: ["-DSINGLE_TAP_PATH=\"%s\""],
             srcs: ["TouchscreenGesture.cpp"],
@@ -41,7 +46,6 @@ cc_binary {
         "hidl_defaults",
         "moto_kona_touch_hal_cc_defaults"
     ],
-    vintf_fragments: ["[email protected]_kona.xml"],
     relative_install_path: "hw",
     vendor: true,
     srcs: [

lineagehw/touch/HighTouchPollingRate.cpp

@@ -0,0 +1,44 @@
+/*
+ * 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

lineagehw/touch/HighTouchPollingRate.h

@@ -0,0 +1,30 @@
+/*
+ * 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

lineagehw/touch/TouchscreenGesture.cpp

@@ -1,17 +1,7 @@
 /*
  * Copyright (C) 2022 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.
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 #define LOG_TAG "TouchscreenGestureService"

lineagehw/touch/TouchscreenGesture.h

@@ -1,17 +1,7 @@
 /*
  * Copyright (C) 2022 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.
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 #pragma once

lineagehw/touch/service.cpp

@@ -19,12 +19,15 @@
 #include <android-base/logging.h>
 #include <hidl/HidlTransportSupport.h>
 
+#include "HighTouchPollingRate.h"
 #include "TouchscreenGesture.h"
 
 using ::android::OK;
 using ::android::sp;
 
+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() {
@@ -38,6 +41,14 @@ int main() {
     }
 #endif
 
+#ifdef USE_TOUCH_POLLING_RATE
+    sp<IHighTouchPollingRate> hpl_service = new HighTouchPollingRate();
+    if (hpl_service->registerAsService() != OK) {
+        LOG(ERROR) << "Cannot register touchscreen high polling rate HAL service.";
+        return 1;
+    }
+#endif
+
     LOG(DEBUG) << "Touchscreen HAL service ready.";
 
     android::hardware::joinRpcThreadpool();

lineagehw/touch/vendor.lineage.touch@1.0-service.moto_kona.rc

@@ -1,3 +1,6 @@
+on early-boot
+    chown system system /sys/class/touchscreen/primary/interpolation
+
 service touch-hal-1-0 /vendor/bin/hw/[email protected]_kona
     class hal
     user system

vendor_framework_compatibility_matrix.xml

@@ -1037,6 +1037,10 @@ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     <hal format="hidl" optional="true">
         <name>vendor.lineage.touch</name>
         <version>1.0</version>
+        <interface>
+            <name>IHighTouchPollingRate</name>
+            <instance>default</instance>
+        </interface>
         <interface>
             <name>ITouchscreenGesture</name>
             <instance>default</instance>