sdm660-common: XiaomiParts: add notification LED brightness slider

Signed-off-by: Dušan Uverić <dusan.uveric9@gmail.com>
Change-Id: I86851420cca27d34e36f8e385859c5be63545bba

XiaomiParts/res/values/strings.xml

@@ -22,6 +22,10 @@
     <!-- KCal -->
     <string name="device_kcal_title">Display Color Calibration</string>
 
+    <!-- Notification LED brightness -->
+    <string name="notification_title">Notification LED</string>
+    <string name="notification_led_title">LED brightness</string>
+
     <!-- Ambient Display -->
     <string name="ambient_display_xiaomi">Xiaomi Doze</string>
     <string name="advanced_doze_summary">Ambient Display</string>

XiaomiParts/res/xml/preferences_xiaomi_parts.xml

@@ -28,6 +28,17 @@
             app:units="%" />
     </PreferenceCategory>
 
+    <PreferenceCategory
+        android:key="notification_led"
+        android:title="@string/notification_title">
+        <org.lineageos.settings.device.preferences.NotificationLedSeekBarPreference
+            android:key="notification_led_brightness"
+            android:title="@string/notification_led_title"
+            android:max="64"
+            app:min="1"
+            android:defaultValue="64" />
+    </PreferenceCategory>
+
     <PreferenceCategory
         android:key="display"
         android:title="@string/display_title">

XiaomiParts/src/org/lineageos/settings/device/BootReceiver.java

@@ -53,6 +53,8 @@ public class BootReceiver extends BroadcastReceiver implements Utils {
                     PREF_HUE, HUE_DEFAULT));
         }
 
+        FileUtils.setValue(DeviceSettings.NOTIF_LED_PATH, Settings.Secure.getInt(
+                context.getContentResolver(), DeviceSettings.PREF_NOTIF_LED, 64));
         FileUtils.setValue(DeviceSettings.VIBRATION_STRENGTH_PATH, Settings.Secure.getInt(
                 context.getContentResolver(), DeviceSettings.PREF_VIBRATION_STRENGTH, 80) / 100.0 * (DeviceSettings.MAX_VIBRATION - DeviceSettings.MIN_VIBRATION) + DeviceSettings.MIN_VIBRATION);
         FileUtils.setValue(DeviceSettings.THERMAL_PATH, Settings.Secure.getString(

XiaomiParts/src/org/lineageos/settings/device/DeviceSettings.java

@@ -27,6 +27,7 @@ import org.lineageos.settings.device.kcal.KCalSettingsActivity;
 import org.lineageos.settings.device.preferences.SecureSettingListPreference;
 import org.lineageos.settings.device.preferences.SecureSettingSwitchPreference;
 import org.lineageos.settings.device.preferences.VibrationSeekBarPreference;
+import org.lineageos.settings.device.preferences.NotificationLedSeekBarPreference;
 
 public class DeviceSettings extends PreferenceFragment implements
         Preference.OnPreferenceChangeListener {
@@ -34,6 +35,10 @@ public class DeviceSettings extends PreferenceFragment implements
     public static final String PREF_VIBRATION_STRENGTH = "vibration_strength";
     public static final String VIBRATION_STRENGTH_PATH = "/sys/devices/virtual/timed_output/vibrator/vtg_level";
 
+    public static final String CATEGORY_NOTIF = "notification_led";
+    public static final String PREF_NOTIF_LED = "notification_led_brightness";
+    public static final String NOTIF_LED_PATH = "/sys/class/leds/white/max_brightness";
+
     // value of vtg_min and vtg_max
     public static final int MIN_VIBRATION = 116;
     public static final int MAX_VIBRATION = 3596;
@@ -62,6 +67,12 @@ public class DeviceSettings extends PreferenceFragment implements
     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
         setPreferencesFromResource(R.xml.preferences_xiaomi_parts, rootKey);
 
+        if (FileUtils.fileWritable(NOTIF_LED_PATH)) {
+            NotificationLedSeekBarPreference notifLedBrightness =
+                    (NotificationLedSeekBarPreference) findPreference(PREF_NOTIF_LED);
+            notifLedBrightness.setOnPreferenceChangeListener(this);
+        } else { getPreferenceScreen().removePreference(findPreference(CATEGORY_NOTIF)); }
+
         VibrationSeekBarPreference vibrationStrength = (VibrationSeekBarPreference) findPreference(PREF_VIBRATION_STRENGTH);
         vibrationStrength.setEnabled(FileUtils.fileWritable(VIBRATION_STRENGTH_PATH));
         vibrationStrength.setOnPreferenceChangeListener(this);
@@ -121,6 +132,10 @@ public class DeviceSettings extends PreferenceFragment implements
     public boolean onPreferenceChange(Preference preference, Object value) {
         final String key = preference.getKey();
         switch (key) {
+            case PREF_NOTIF_LED:
+                FileUtils.setValue(NOTIF_LED_PATH, (int) value);
+                break;
+
             case PREF_VIBRATION_STRENGTH:
                 double vibrationValue = (int) value / 100.0 * (MAX_VIBRATION - MIN_VIBRATION) + MIN_VIBRATION;
                 FileUtils.setValue(VIBRATION_STRENGTH_PATH, vibrationValue);

XiaomiParts/src/org/lineageos/settings/device/preferences/NotificationLedSeekBarPreference.java

@@ -0,0 +1,26 @@
+package org.lineageos.settings.device.preferences;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.SeekBar;
+import org.lineageos.settings.device.FileUtils;
+
+public class NotificationLedSeekBarPreference extends SecureSettingCustomSeekBarPreference {
+
+    public static final String NOTIF_LED_PATH = "/sys/class/leds/white/brightness";
+
+    public NotificationLedSeekBarPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+    
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+        notifyChanged();
+        FileUtils.setValue(NOTIF_LED_PATH, 64);
+    }
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+        notifyChanged();
+        FileUtils.setValue(NOTIF_LED_PATH, 0);
+    }
+}

sepolicy/vendor/file_contexts

@@ -44,6 +44,10 @@
 /sys/devices/platform/kcal_ctrl.0(/.*)?         u:object_r:kcal_dev:s0
 /sys/bus/platform/drivers/kcal_ctrl(/.*)?       u:object_r:kcal_dev:s0
 
+# Notification LED
+/devices/soc/800f000.qcom,spmi/spmi-0/spmi0-03/800f000.qcom,spmi:qcom,pm660l@3:qcom,leds@d000/leds/white/max_brightness  u:object_r:sysfs_graphics:s0
+/devices/soc/800f000.qcom,spmi/spmi-0/spmi0-03/800f000.qcom,spmi:qcom,pm660l@3:qcom,leds@d000/leds/white/brightness  u:object_r:sysfs_graphics:s0
+
 # Light HAL
 /(vendor|system/vendor)/bin/hw/android\.hardware\.light@2\.0-service\.xiaomi_sdm660                     u:object_r:hal_light_default_exec:s0
 

sepolicy/vendor/system_app.te

@@ -9,6 +9,8 @@ allow system_app sysfs_thermal:file rw_file_perms;
 allow system_app sysfs_thermal:dir search;
 allow system_app sysfs_vibrator:file rw_file_perms;
 allow system_app sysfs_vibrator:dir search;
+allow system_app sysfs_graphics:dir search;
+allow system_app sysfs_graphics:file rw_file_perms;
 allow system_app sysfs_leds:dir search;
 
 set_prop(system_app, system_prop);