sdm660-common: Bring back folio daemon and userspace hall switcher

Signed-off-by: pix106 <sbordenave@gmail.com>

DeviceSettings/res/values-de-rDE/strings.xml

@@ -91,4 +91,6 @@
     <string name="edit_hint" formatted="false">Wert zwischen %1d und %2d</string>
     <string name="advanced_doze_summary">Inaktivitätsdisplay</string>
     <string name="grayscale">Graustufen-Modus</string>
+    <string name="hall_title">Aktiviere Aufwecken mit Flip Cover </string>
+    <string name="hall_wakeup_summary">Schalte das Gerät AN und AUS mit einem magnetischen Flip Cover</string>
 </resources>

DeviceSettings/res/values-es-rES/strings.xml

@@ -107,6 +107,10 @@
     <string name="preset_extreme_amoled">Amoled Extremo</string>
     <string name="preset_warm_amoled">Amoled caliente</string>
     <string name="preset_hybrid_mamba">Mamba híbrido</string>
+     
+    <string name="hall_wakeup_title">Despertar con funda flip</string>
+    <string name="hall_title">Activar levantamiento con funda flip</string>
+    <string name="hall_wakeup_summary">Despertar dispositivo con una funda flip magnética</string>
 
     <!-- CustomSeekBarPreference -->
     <string name="default_value">Valor por defecto</string>

DeviceSettings/res/values-in-rID/strings.xml

@@ -112,6 +112,9 @@
     <string name="preset_warm_amoled">Amoled hangat</string>
     <string name="preset_hybrid_mamba">Hibrid</string>
 
+    <string name="hall_wakeup_title">Flip cover nyala</string>
+    <string name="hall_title">Aktifkan Flip Cover nyala</string>
+    <string name="hall_wakeup_summary">Nyalakan perangkat saat flip cover magnetik dibuka</string>
     <!-- menu -->
     <string name="kcal_presets">@string/presets_dialog_title</string>
     <string name="kcal_reset">Reset</string>

DeviceSettings/res/values-ja-rJP/strings.xml

@@ -106,6 +106,8 @@
     <string name="preset_warm_amoled">暖色 AMOLED</string>
     <string name="preset_hybrid_mamba">Hybrid Mamba</string>
 
+    <!-- usb fastcharge -->
+
     <!-- menu -->
     <string name="kcal_presets" translatable="false">@string/presets_dialog_title</string>
     <string name="kcal_reset">リセット</string>
@@ -114,5 +116,9 @@
     <string name="edit_value">新しい値を選択して下さい</string>
     <string name="default_value">既定値</string>
     <string name="edit_hint" formatted="false">値は %1$d と %2$d の間です</string>
-
+     
+     <!-- Flip cover wake -->
+     <string name="hall_wakeup_title">フリップカバーの復帰</string>
+     <string name="hall_title">フリップカバーの復帰の有効化</string>
+     <string name="hall_wakeup_summary">マグネットフリップカバーでスリープ解除する</string>
 </resources>

DeviceSettings/res/values-pt-rBR/strings.xml

@@ -114,6 +114,9 @@
     <string name="preset_warm_amoled">Amoled Quente</string>
     <string name="preset_hybrid_mamba">Mamba Híbrida</string>
 
+    <string name="hall_wakeup_title">Flip Cover</string>
+    <string name="hall_title">Ativar a tela com Flip Cover</string>
+    <string name="hall_wakeup_summary">Ativa a tela ao usar uma Flip Cover magnética</string>
     <!-- menu -->
     <string name="kcal_presets">@string/presets_dialog_title</string>
     <string name="kcal_reset">Redefinir</string>

DeviceSettings/res/values-ru-rRU/strings.xml

@@ -114,6 +114,9 @@
     <string name="preset_warm_amoled">Теплый Amoled</string>
     <string name="preset_hybrid_mamba">Гибридная Мамба</string>
 
+    <string name="hall_wakeup_title">Пробуждение умным чехлом</string>
+    <string name="hall_title">Включить пробуждение откидной крышкой</string>
+    <string name="hall_wakeup_summary">Пробуждение устройства через магнитную откидную крышку</string>
     <!-- menu -->
     <string name="kcal_presets">@string/presets_dialog_title</string>
     <string name="kcal_reset">Сбросить</string>

DeviceSettings/res/values-sk-rSK/strings.xml

@@ -112,6 +112,9 @@
     <string name="preset_warm_amoled">Teplý - Amoled</string>
     <string name="preset_hybrid_mamba">Hybrid Mamba</string>
 
+    <string name="hall_wakeup_title">Zobudenie preklopením krytu</string>
+    <string name="hall_title">Povoliť zobudenie preklopením krytu</string>
+    <string name="hall_wakeup_summary">Zobudenia zariadenia magnetickým krytom</string>
     <!-- menu -->
     <string name="kcal_presets">@string/presets_dialog_title</string>
     <string name="kcal_reset">Resetovať</string>

DeviceSettings/res/values/strings.xml

@@ -69,6 +69,9 @@
     <string name="preset_warm_amoled">Warm Amoled</string>
     <string name="preset_hybrid_mamba">Hybrid Mamba</string>
 
+    <string name="hall_wakeup_title">Flip Cover Wakeup</string>
+    <string name="hall_title">Enable Flip Cover Wakeup</string>
+    <string name="hall_wakeup_summary">Wakeup device via magnetic Flip Cover</string>
     <!-- menu -->
     <string name="kcal_presets">@string/presets_dialog_title</string>
     <string name="kcal_reset">Reset</string>

DeviceSettings/res/xml/preferences_xiaomi_parts.xml

@@ -15,7 +15,6 @@
 -->
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
-
     <PreferenceCategory
         android:key="vibration"
         android:title="@string/vibration_title">
@@ -149,4 +148,15 @@
 
     </PreferenceCategory>
 
+    <PreferenceCategory
+        android:key="hall_wakeup"
+        android:title="@string/hall_wakeup_title">
+
+        <org.lineageos.settings.device.preferences.SecureSettingSwitchPreference
+            android:defaultValue="true"
+            android:key="hall"
+            android:summary="@string/hall_wakeup_summary"
+            android:title="@string/hall_title"
+            android:icon="@drawable/ic_flip" />
+    </PreferenceCategory>
 </PreferenceScreen>

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

@@ -77,6 +77,10 @@ public class BootReceiver extends BroadcastReceiver implements Utils {
         // Vibration Strength
         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.HALL_WAKEUP_PATH, Settings.Secure.getInt(
+                context.getContentResolver(), DeviceSettings.PREF_HALL_WAKEUP, 1) == 1 ? "Y" : "N");
+        FileUtils.setProp(DeviceSettings.HALL_WAKEUP_PROP, Settings.Secure.getInt(
+                context.getContentResolver(), DeviceSettings.PREF_HALL_WAKEUP, 1) == 1);
 
         // Dirac
         context.startService(new Intent(context, DiracService.class));

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

@@ -69,6 +69,11 @@ public class DeviceSettings extends PreferenceFragment implements
     private static final String PREF_DEVICE_DOZE = "device_doze";
     private static final String PREF_DEVICE_KCAL = "device_kcal";
 
+    private static final String CATEGORY_HALL_WAKEUP = "hall_wakeup";
+    public static final String PREF_HALL_WAKEUP = "hall";
+    public static final String HALL_WAKEUP_PATH = "/sys/module/hall/parameters/hall_toggle";
+    public static final String HALL_WAKEUP_PROP = "persist.service.folio_daemon";
+
     private static final String DEVICE_DOZE_PACKAGE_NAME = "com.advanced.settings.doze";
 
     private static final String DEVICE_JASON_PACKAGE_NAME = "org.lineageos.settings.devicex";
@@ -166,6 +171,13 @@ public class DeviceSettings extends PreferenceFragment implements
         mPreset = (SecureSettingListPreference) findPreference(PREF_PRESET);
         mPreset.setOnPreferenceChangeListener(this);
 
+        if (FileUtils.fileWritable(HALL_WAKEUP_PATH)) {
+            SecureSettingSwitchPreference hall = (SecureSettingSwitchPreference) findPreference(PREF_HALL_WAKEUP);
+            hall.setChecked(FileUtils.getValue(HALL_WAKEUP_PATH).equals("Y"));
+            hall.setOnPreferenceChangeListener(this);
+        } else {
+            getPreferenceScreen().removePreference(findPreference(CATEGORY_HALL_WAKEUP));
+        }
     }
 
     @Override
@@ -220,6 +232,11 @@ public class DeviceSettings extends PreferenceFragment implements
                 }
                 break;
 
+            case PREF_HALL_WAKEUP:
+                FileUtils.setValue(HALL_WAKEUP_PATH, (boolean) value ? "Y" : "N");
+                FileUtils.setProp(HALL_WAKEUP_PROP, (boolean) value);
+                break;
+
             case PREF_KEY_FPS_INFO:
                 boolean enabled = (boolean) value;
                 Intent fpsinfo = new Intent(this.getContext(), FPSInfoService.class);

folio_daemon/Android.bp

@@ -0,0 +1,21 @@
+cc_binary {
+    name: "folio_daemon",
+
+    shared_libs: [
+        "libandroid",
+        "libcutils",
+        "liblog",
+    ],
+
+    srcs: ["main.cpp"],
+
+    cflags: [
+        "-DLOG_TAG=\"folio_daemon\"",
+        "-DLOG_NDEBUG=0",
+        "-Wall",
+        "-Werror",
+    ],
+
+    owner: "google",
+
+}

folio_daemon/main.cpp

@@ -0,0 +1,182 @@
+/*
+ * Copyright 2017 The Android Open Source 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.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <linux/input.h>
+#include <linux/uinput.h>
+#include <android/looper.h>
+#include <android/sensor.h>
+#include <cutils/log.h>
+
+// Hall-effect sensor type
+#define SENSOR_TYPE 33171016
+
+#define RETRY_LIMIT     120
+#define RETRY_PERIOD    30          // 30 seconds
+#define WARN_PERIOD     (time_t)300 // 5 minutes
+
+/*
+ * This simple daemon listens for events from the Hall-effect sensor and writes
+ * the appropriate SW_LID event to a uinput node. This allows the screen to be
+ * locked with a magnetic folio case.
+ */
+int main(void) {
+    int uinputFd;
+    int err;
+    struct uinput_user_dev uidev;
+    ASensorManager *sensorManager = nullptr;
+    ASensorRef hallSensor;
+    ALooper *looper;
+    ASensorEventQueue *eventQueue = nullptr;
+    time_t lastWarn = 0;
+    int attemptCount = 0;
+
+    ALOGI("Started");
+
+    uinputFd = TEMP_FAILURE_RETRY(open("/dev/uinput", O_WRONLY | O_NONBLOCK));
+    if (uinputFd < 0) {
+        ALOGE("Unable to open uinput node: %s", strerror(errno));
+        goto out;
+    }
+
+    err = TEMP_FAILURE_RETRY(ioctl(uinputFd, UI_SET_EVBIT, EV_SW))
+        | TEMP_FAILURE_RETRY(ioctl(uinputFd, UI_SET_EVBIT, EV_SYN))
+        | TEMP_FAILURE_RETRY(ioctl(uinputFd, UI_SET_SWBIT, SW_LID));
+    if (err != 0) {
+        ALOGE("Unable to enable SW_LID events: %s", strerror(errno));
+        goto out;
+    }
+
+    memset(&uidev, 0, sizeof (uidev));
+    snprintf(uidev.name, UINPUT_MAX_NAME_SIZE, "uinput-folio");
+    uidev.id.bustype = BUS_VIRTUAL;
+    uidev.id.vendor = 0;
+    uidev.id.product = 0;
+    uidev.id.version = 0;
+
+    err = TEMP_FAILURE_RETRY(write(uinputFd, &uidev, sizeof (uidev)));
+    if (err < 0) {
+        ALOGE("Write user device to uinput node failed: %s", strerror(errno));
+        goto out;
+    }
+
+    err = TEMP_FAILURE_RETRY(ioctl(uinputFd, UI_DEV_CREATE));
+    if (err < 0) {
+        ALOGE("Unable to create uinput device: %s", strerror(errno));
+        goto out;
+    }
+
+    ALOGI("Successfully registered uinput-folio for SW_LID events");
+
+    // Get Hall-effect sensor events from the NDK
+    sensorManager = ASensorManager_getInstanceForPackage(nullptr);
+    /*
+     * As long as we are unable to get the sensor handle, periodically retry
+     * and emit an error message at a low frequency to prevent high CPU usage
+     * and log spam. If we simply exited with an error here, we would be
+     * immediately restarted and fail in the same way indefinitely.
+     */
+    while (true) {
+        time_t now = time(NULL);
+        hallSensor = ASensorManager_getDefaultSensor(sensorManager,
+                                                     SENSOR_TYPE);
+        if (hallSensor != nullptr) {
+            break;
+        }
+
+        if (++attemptCount >= RETRY_LIMIT) {
+            ALOGE("Retries exhausted; exiting");
+            goto out;
+        } else if (now > lastWarn + WARN_PERIOD) {
+            ALOGE("Unable to get Hall-effect sensor");
+            lastWarn = now;
+        }
+
+        sleep(RETRY_PERIOD);
+    }
+
+    looper = ALooper_forThread();
+    if (looper == nullptr) {
+        looper = ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS);
+    }
+
+    eventQueue = ASensorManager_createEventQueue(sensorManager, looper, 0, NULL,
+                                                 NULL);
+    err = ASensorEventQueue_registerSensor(eventQueue, hallSensor,
+                                           ASensor_getMinDelay(hallSensor),
+                                           10000);
+    if (err < 0) {
+        ALOGE("Unable to register for Hall-effect sensor events");
+        goto out;
+    }
+
+    ALOGI("Starting polling loop");
+
+    // Polling loop
+    while (ALooper_pollAll(-1, NULL, NULL, NULL) == 0) {
+        int eventCount = 0;
+        ASensorEvent sensorEvent;
+        while (ASensorEventQueue_getEvents(eventQueue, &sensorEvent, 1) > 0) {
+            // 1 means closed; 0 means open
+            int isClosed = sensorEvent.data[0] > 0.0f ? 1 : 0;
+            struct input_event event;
+            event.type = EV_SW;
+            event.code = SW_LID;
+            event.value = isClosed;
+            err = TEMP_FAILURE_RETRY(write(uinputFd, &event, sizeof (event)));
+            if (err < 0) {
+                ALOGE("Write EV_SW to uinput node failed: %s", strerror(errno));
+                goto out;
+            }
+
+            // Force a flush with an EV_SYN
+            event.type = EV_SYN;
+            event.code = SYN_REPORT;
+            event.value = 0;
+            err = TEMP_FAILURE_RETRY(write(uinputFd, &event, sizeof (event)));
+            if (err < 0) {
+                ALOGE("Write EV_SYN to uinput node failed: %s",
+                      strerror(errno));
+                goto out;
+            }
+
+            ALOGI("Sent lid %s event", isClosed ? "closed" : "open");
+            eventCount++;
+        }
+
+        if (eventCount == 0) {
+            ALOGE("Poll returned with zero events: %s", strerror(errno));
+            break;
+        }
+    }
+
+out:
+    // Clean up
+    if (sensorManager != nullptr && eventQueue != nullptr) {
+        ASensorManager_destroyEventQueue(sensorManager, eventQueue);
+    }
+
+    if (uinputFd >= 0) {
+        close(uinputFd);
+    }
+
+    // The loop can only be exited via failure or signal
+    return 1;
+}

rootdir/etc/init.target.rc

@@ -465,6 +465,18 @@ service dcvs-sh /vendor/bin/init.qti.dcvs.sh
 on property:vendor.dcvs.prop=1
    start dcvs-sh
 
+service folio_daemon /system/bin/folio_daemon
+    class late_start
+    user system
+    group system uhid
+    disabled
+
+on property:persist.service.folio_daemon=0
+    stop folio_daemon
+ 
+on property:persist.service.folio_daemon=1
+    start folio_daemon
+
 service ppd /system/vendor/bin/mm-pp-dpps
     class late_start
     user system

rootdir/etc/init.xiaomi_parts.rc

@@ -15,9 +15,11 @@
 #
 
 on boot
-    # Haptic strength
+    # XiaomiParts
     chown system system /sys/devices/virtual/timed_output/vibrator/vtg_level
     chmod 0660 /sys/devices/virtual/timed_output/vibrator/vtg_level
+    chown system system /sys/module/hall/parameters/hall_toggle
+    chmod 0660 /sys/module/hall/parameters/hall_toggle
     
     # FPS
     chown system system /sys/devices/virtual/graphics/fb0/measured_fps

sdm660.mk

@@ -203,6 +203,10 @@ PRODUCT_PACKAGES += \
     android.hardware.drm@1.4-service.clearkey \
     android.hardware.drm@1.4.vendor
 
+# Folio
+PRODUCT_PACKAGES += \
+    folio_daemon
+
 # Freeform Multiwindow
 PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/android.software.freeform_window_management.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.software.freeform_window_management.xml

sepolicy/private/file_contexts

@@ -1,3 +1,3 @@
 # Executables
 /system/bin/chargeonlymode                              u:object_r:charger_exec:s0
-
+/system/bin/folio_daemon        u:object_r:folio_daemon_exec:s0

sepolicy/private/folio_daemon.te

@@ -0,0 +1,15 @@
+type folio_daemon, domain, coredomain;
+type folio_daemon_exec, system_file_type, exec_type, file_type;
+
+init_daemon_domain(folio_daemon)
+
+allow folio_daemon binder_device:chr_file rw_file_perms;
+allow folio_daemon uhid_device:chr_file rw_file_perms;
+
+allow folio_daemon system_server:unix_stream_socket rw_socket_perms_no_ioctl;
+
+binder_use(folio_daemon)
+binder_call(folio_daemon, system_server)
+
+allow folio_daemon sensorservice_service:service_manager find;
+allow folio_daemon permission_service:service_manager find;

sepolicy/private/system_server.te

@@ -1,3 +1,4 @@
+binder_call(system_server, folio_daemon)
 
 # Allow system_server to set persist_camera_prop
 get_prop(system_server, vendor_persist_camera_prop)

sepolicy/vendor/file.te

@@ -14,6 +14,9 @@ type sysfs_earpiecegain, sysfs_type, fs_type;
 # HVDCP
 type vendor_sysfs_hvdcp, fs_type, sysfs_type;
 
+# Hall Switch
+type hall_dev, sysfs_type, fs_type;
+
 # Kcal
 type kcal_dev, sysfs_type, fs_type;
 

sepolicy/vendor/file_contexts

@@ -29,6 +29,9 @@
 /bt_firmware(/.*)?                                                                                                                u:object_r:bt_firmware_file:s0
 /persist(/.*)?                                                                                                                    u:object_r:persist_file:s0
 
+# Hall Switch
+/sys/module/hall/parameters(/.*)?                                                                                           u:object_r:hall_dev:s0
+
 # Hexagon DSP-side executable needed for Halide operation
 # This is labeled as public_adsprpcd_file as it needs to be read by apps
 # (e.g. Google Camera App)

sepolicy/vendor/property_contexts

@@ -40,6 +40,9 @@ ro.boot.fp.                             u:object_r:hal_fingerprint_prop:s0
 ro.boot.fpsensor                        u:object_r:hal_fingerprint_prop:s0
 sys.fp.                                 u:object_r:hal_fingerprint_prop:s0
 
+# Hall wakeup
+persist.service.folio_daemon            u:object_r:system_prop:s0
+
 # Media
 gpu.stats.debug.level                   u:object_r:vendor_default_prop:s0
 

sepolicy/vendor/system_app.te

@@ -1,4 +1,6 @@
 allow system_app blkio_dev:dir search;
+allow system_app hall_dev:file rw_file_perms;
+allow system_app hall_dev:dir search;
 allow system_app kcal_dev:dir search;
 allow system_app kcal_dev:file rw_file_perms;
 allow system_app proc_vmallocinfo:file read;

sepolicy/vendor/ueventd.te

@@ -1 +1,4 @@
+allow ueventd hall_dev:dir r_dir_perms;
+allow ueventd hall_dev:file rw_file_perms;
+allow ueventd hall_dev:lnk_file r_file_perms;
 allow ueventd metadata_file:dir search;