sm8350-common: parts: Add High Touch Polling Rate

Used to handle our node to force enable Xiaomi's High Touch polling rate mode from kernel

parts/AndroidManifest.xml

@@ -73,6 +73,32 @@
             android:permission="ThermalService">
         </service>
 
+        <activity
+            android:name=".touchsampling.TouchSamplingSettingsActivity"
+            android:label="@string/htsr_enable_title"
+            android:theme="@style/Theme.SubSettingsBase"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.android.settings.action.IA_SETTINGS" />
+            </intent-filter>
+            <meta-data
+                android:name="com.android.settings.category"
+                android:value="com.android.settings.category.ia.display" />
+            <meta-data
+                android:name="com.android.settings.summary"
+                android:resource="@string/htsr_enable_summary" />
+        </activity>
+        <service
+            android:name=".touchsampling.TouchSamplingTileService"
+            android:icon="@drawable/ic_htsr"
+            android:label="@string/htsr_enable_title"
+            android:exported="true"
+            android:permission="android.permission.BIND_QUICK_SETTINGS_TILE">
+            <intent-filter>
+                <action android:name="android.service.quicksettings.action.QS_TILE" />
+            </intent-filter>
+        </service>
+
         <activity
             android:name=".speaker.ClearSpeakerActivity" 
             android:label="@string/clear_speaker_title">

parts/res/drawable/ic_htsr.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    android:tint="?android:attr/colorControlNormal">
+
+    <path
+        android:fillColor="#000"
+        android:pathData="M20.22,10l-4.15,0.01c-0.16,-0.01 -0.31,0.02 -0.45,0.08l-0.59,0.26L13.2,6.25c-0.56,-1.26 -2.04,-1.83 -3.3,-1.27s-1.83,2.04 -1.27,3.3l3.3,7.45l-1.87,0.39c-0.19,0.05 -0.99,0.27 -1.36,1.21L8,19.19l6.78,2.67c0.49,0.19 1.05,0.18 1.53,-0.04l5.99,-2.65c0.89,-0.4 1.37,-1.38 1.13,-2.32l-1.36,-5.34C21.85,10.65 21.1,10.04 20.22,10zM21.49,17.34L15.5,20l-4.92,-1.96l4.18,-0.88l-4.3,-9.7c-0.11,-0.25 0,-0.55 0.25,-0.66c0.25,-0.11 0.55,0 0.66,0.25l2.5,5.65l1.61,-0.71L20.13,12L21.49,17.34zM2.06,5.56L1,4.5L4.5,1L8,4.5L6.94,5.56L5.32,3.94C5.11,4.76 5,5.62 5,6.5c0,2.42 0.82,4.65 2.2,6.43L6.13,14C4.49,11.95 3.5,9.34 3.5,6.5c0,-0.92 0.1,-1.82 0.3,-2.68L2.06,5.56z"/>
+</vector>

parts/res/values/strings.xml

@@ -66,4 +66,10 @@
     <string name="dc_dimming_enable_summary">Reduces eye strain in low light conditions</string>
     <string name="dc_dimming_enable_summary_not_supported">DC Dimming is currently not supported by the kernel</string>
 
+    <!-- High Touch Polling -->
+    <string name="htsr_title">Touch Responsiveness</string>
+    <string name="htsr_enable_title">Increase Touch Responsiveness</string>
+    <string name="htsr_enable_summary">Increases touch polling rate to decrease latency</string>
+    <string name="htsr_enable_summary_not_supported">Increase Touch Responsiveness is currently not supported by the kernel</string>
+
 </resources>

parts/res/xml/htsr_settings.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2015 The CyanogenMod Project
+                   2018-2019 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.
+-->
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:title="@string/htsr_title">
+
+    <SwitchPreferenceCompat
+        android:defaultValue="false"
+        android:key="htsr_enable"
+        android:summary="@string/htsr_enable_summary"
+        android:title="@string/htsr_enable_title" />
+</PreferenceScreen>

parts/src/org/lineageos/settings/BootCompletedReceiver.java

@@ -35,6 +35,8 @@ public class BootCompletedReceiver extends BroadcastReceiver {
     private static final String TAG = "XiaomiParts";
     private static final String DC_DIMMING_ENABLE_KEY = "dc_dimming_enable";
     private static final String DC_DIMMING_NODE = "/sys/devices/platform/soc/soc:qcom,dsi-display-primary/dimlayer_exposure";
+    private static final String HTSR_ENABLE_KEY = "htsr_enable";
+    private static final String HTSR_FILE = "/sys/devices/virtual/touch/touch_dev/bump_sample_rate";
 
     @Override
     public void onReceive(final Context context, Intent intent) {
@@ -45,6 +47,10 @@ public class BootCompletedReceiver extends BroadcastReceiver {
         ThermalUtils.startService(context);
         RefreshUtils.startService(context);    
         
+        // Touch Sampling
+        boolean HTSREnabled = sharedPrefs.getBoolean(HTSR_ENABLE_KEY, false);
+        FileUtils.writeLine(HTSR_FILE, HTSREnabled ? "1" : "0");
+
         // DC Dimming
         FileUtils.enableService(context);
         boolean dcDimmingEnabled = sharedPrefs.getBoolean(DC_DIMMING_ENABLE_KEY, false);

parts/src/org/lineageos/settings/touchsampling/TouchSamplingSettingsActivity.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2015-2016 The CyanogenMod Project
+ *               2017,2021-2022 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.
+ */
+
+package org.lineageos.settings.touchsampling;
+
+import android.os.Bundle;
+
+import com.android.settingslib.collapsingtoolbar.CollapsingToolbarBaseActivity;
+
+public class TouchSamplingSettingsActivity extends CollapsingToolbarBaseActivity {
+
+    private static final String TAG_HTSR = "touchsampling";
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        getFragmentManager().beginTransaction().replace(com.android.settingslib.collapsingtoolbar.R.id.content_frame,
+                new TouchSamplingSettingsFragment(), TAG_HTSR).commit();
+    }
+}

parts/src/org/lineageos/settings/touchsampling/TouchSamplingSettingsFragment.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+package org.lineageos.settings.touchsampling;
+
+import android.content.Context;
+import android.os.Bundle;
+import androidx.preference.Preference;
+import androidx.preference.Preference.OnPreferenceChangeListener;
+import androidx.preference.PreferenceFragment;
+import androidx.preference.SwitchPreferenceCompat;
+
+import org.lineageos.settings.R;
+import org.lineageos.settings.utils.FileUtils;
+
+public class TouchSamplingSettingsFragment extends PreferenceFragment implements
+        OnPreferenceChangeListener {
+
+    private SwitchPreferenceCompat mTouchSamplingPreference;
+    private static final String HTSR_ENABLE_KEY = "htsr_enable";
+    private static final String HTSR_FILE = "/sys/devices/virtual/touch/touch_dev/bump_sample_rate";
+
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        addPreferencesFromResource(R.xml.htsr_settings);
+        mTouchSamplingPreference = (SwitchPreferenceCompat) findPreference(HTSR_ENABLE_KEY);
+        if (FileUtils.fileExists(HTSR_FILE)) {
+            mTouchSamplingPreference.setEnabled(true);
+            mTouchSamplingPreference.setOnPreferenceChangeListener(this);
+        } else {
+            mTouchSamplingPreference.setSummary(R.string.htsr_enable_summary_not_supported);
+            mTouchSamplingPreference.setEnabled(false);
+        }
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        if (HTSR_ENABLE_KEY.equals(preference.getKey())) {
+            FileUtils.writeLine(HTSR_FILE, (Boolean) newValue ? "1" : "0");
+        }
+        return true;
+    }
+}

parts/src/org/lineageos/settings/touchsampling/TouchSamplingTileService.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+package org.lineageos.settings.touchsampling;
+
+import android.content.SharedPreferences;
+import android.service.quicksettings.Tile;
+import android.service.quicksettings.TileService;
+import androidx.preference.PreferenceManager;
+
+import org.lineageos.settings.utils.FileUtils;
+
+public class TouchSamplingTileService extends TileService {
+
+    private static final String HTSR_ENABLE_KEY = "htsr_enable";
+    private static final String HTSR_FILE = "/sys/devices/virtual/touch/touch_dev/bump_sample_rate";
+
+    private void updateUI(boolean enabled) {
+        final Tile tile = getQsTile();
+        if (FileUtils.fileExists(HTSR_FILE)) {
+            tile.setState(enabled ? Tile.STATE_ACTIVE : Tile.STATE_INACTIVE);
+        } else {
+            tile.setState(Tile.STATE_UNAVAILABLE);
+        }
+        tile.updateTile();
+    }
+
+    @Override
+    public void onStartListening() {
+        super.onStartListening();
+        SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
+        updateUI(sharedPrefs.getBoolean(HTSR_ENABLE_KEY, false));
+    }
+
+    @Override
+    public void onStopListening() {
+        super.onStopListening();
+    }
+
+    @Override
+    public void onClick() {
+        super.onClick();
+        SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
+        final boolean enabled = !(sharedPrefs.getBoolean(HTSR_ENABLE_KEY, false));
+        FileUtils.writeLine(HTSR_FILE, enabled ? "1" : "0");
+        sharedPrefs.edit().putBoolean(HTSR_ENABLE_KEY, enabled).commit();
+        updateUI(enabled);
+    }
+}

rootdir/etc/init.qcom.rc

@@ -228,6 +228,10 @@ on post-fs-data
     chown system system /sys/devices/platform/soc/soc:qcom,dsi-display-primary/hbm_enabled
     chmod 0660 /sys/devices/platform/soc/soc:qcom,dsi-display-primary/hbm_enabled
 
+    # Allow systemto modify High Touch Sampling Rate
+    chown system system /sys/devices/virtual/touch/touch_dev/bump_sample_rate
+    chmod 0660 /sys/devices/virtual/touch/touch_dev/bump_sample_rate
+
 on property:sys.boot_completed=1
     # Enable UFS clock scaling back
     write /sys/bus/platform/devices/1d84000.ufshc/clkscale_enable 1

sepolicy/vendor/file.te

@@ -0,0 +1 @@
+type sysfs_htsr, sysfs_type, fs_type;

sepolicy/vendor/file_contexts

@@ -34,6 +34,9 @@
 /sys/devices/virtual/touch/tp_dev/fod_status                              u:object_r:vendor_sysfs_udfps:s0
 /vendor/bin/hw/android\.hardware\.biometrics\.fingerprint-service\.xiaomi u:object_r:hal_fingerprint_default_exec:s0
 
+# HTSR
+/sys/devices/virtual/touch/touch_dev/bump_sample_rate                     u:object_r:sysfs_htsr:s0
+
 # IR
 /dev/lirc[0-9]+                                                           u:object_r:lirc_device:s0
 /vendor/bin/hw/android\.hardware\.ir-service\.xiaomi                      u:object_r:hal_ir_default_exec:s0

sepolicy/vendor/system_app.te

@@ -4,3 +4,7 @@ allow system_app sysfs_thermal:file rw_file_perms;
 # DC Dimming and HBM
 allow system_app vendor_sysfs_graphics:dir search;
 allow system_app vendor_sysfs_graphics:file { getattr open write };
+
+# HTSR
+allow system_app sysfs_htsr:file { read write open setattr getattr };
+allow system_app sysfs_htsr:dir { search open read };