10 files changed, 472 insertions, 59 deletions

diff --git a/src/core/hle/service/acc/acc.cpp b/src/core/hle/service/acc/acc.cpp
index bb07f6ccc..3ec0e1eca 100644
--- a/src/core/hle/service/acc/acc.cpp
+++ b/src/core/hle/service/acc/acc.cpp
@@ -32,9 +32,15 @@
 
 namespace Service::Account {
 
-constexpr ResultCode ERR_INVALID_BUFFER_SIZE{ErrorModule::Account, 30};
+constexpr ResultCode ERR_INVALID_USER_ID{ErrorModule::Account, 20};
+constexpr ResultCode ERR_INVALID_APPLICATION_ID{ErrorModule::Account, 22};
+constexpr ResultCode ERR_INVALID_BUFFER{ErrorModule::Account, 30};
+constexpr ResultCode ERR_INVALID_BUFFER_SIZE{ErrorModule::Account, 31};
 constexpr ResultCode ERR_FAILED_SAVE_DATA{ErrorModule::Account, 100};
 
+// Thumbnails are hard coded to be at least this size
+constexpr std::size_t THUMBNAIL_SIZE = 0x24000;
+
 static std::string GetImagePath(Common::UUID uuid) {
     return Common::FS::GetUserPath(Common::FS::UserPath::NANDDir) +
            "/system/save/8000000000000010/su/avators/" + uuid.FormatSwitch() + ".jpg";
@@ -369,7 +375,7 @@ protected:
         if (user_data.size() < sizeof(ProfileData)) {
             LOG_ERROR(Service_ACC, "ProfileData buffer too small!");
             IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERR_INVALID_BUFFER_SIZE);
+            rb.Push(ERR_INVALID_BUFFER);
             return;
         }
 
@@ -402,7 +408,7 @@ protected:
         if (user_data.size() < sizeof(ProfileData)) {
             LOG_ERROR(Service_ACC, "ProfileData buffer too small!");
             IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERR_INVALID_BUFFER_SIZE);
+            rb.Push(ERR_INVALID_BUFFER);
             return;
         }
 
@@ -811,6 +817,55 @@ void Module::Interface::ListOpenContextStoredUsers(Kernel::HLERequestContext& ct
     rb.Push(RESULT_SUCCESS);
 }
 
+void Module::Interface::StoreSaveDataThumbnailApplication(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto uuid = rp.PopRaw<Common::UUID>();
+
+    LOG_WARNING(Service_ACC, "(STUBBED) called, uuid={}", uuid.Format());
+
+    // TODO(ogniK): Check if application ID is zero on acc initialize. As we don't have a reliable
+    // way of confirming things like the TID, we're going to assume a non zero value for the time
+    // being.
+    constexpr u64 tid{1};
+    StoreSaveDataThumbnail(ctx, uuid, tid);
+}
+
+void Module::Interface::StoreSaveDataThumbnailSystem(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto uuid = rp.PopRaw<Common::UUID>();
+    const auto tid = rp.Pop<u64_le>();
+
+    LOG_WARNING(Service_ACC, "(STUBBED) called, uuid={}, tid={:016X}", uuid.Format(), tid);
+    StoreSaveDataThumbnail(ctx, uuid, tid);
+}
+
+void Module::Interface::StoreSaveDataThumbnail(Kernel::HLERequestContext& ctx,
+                                               const Common::UUID& uuid, const u64 tid) {
+    IPC::ResponseBuilder rb{ctx, 2};
+
+    if (tid == 0) {
+        LOG_ERROR(Service_ACC, "TitleID is not valid!");
+        rb.Push(ERR_INVALID_APPLICATION_ID);
+        return;
+    }
+
+    if (!uuid) {
+        LOG_ERROR(Service_ACC, "User ID is not valid!");
+        rb.Push(ERR_INVALID_USER_ID);
+        return;
+    }
+    const auto thumbnail_size = ctx.GetReadBufferSize();
+    if (thumbnail_size != THUMBNAIL_SIZE) {
+        LOG_ERROR(Service_ACC, "Buffer size is empty! size={:X} expecting {:X}", thumbnail_size,
+                  THUMBNAIL_SIZE);
+        rb.Push(ERR_INVALID_BUFFER_SIZE);
+        return;
+    }
+
+    // TODO(ogniK): Construct save data thumbnail
+    rb.Push(RESULT_SUCCESS);
+}
+
 void Module::Interface::TrySelectUserWithoutInteraction(Kernel::HLERequestContext& ctx) {
     LOG_DEBUG(Service_ACC, "called");
     // A u8 is passed into this function which we can safely ignore. It's to determine if we have
diff --git a/src/core/hle/service/acc/acc.h b/src/core/hle/service/acc/acc.h
index ab8edc049..0e3ad8ec6 100644
--- a/src/core/hle/service/acc/acc.h
+++ b/src/core/hle/service/acc/acc.h
@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include "common/uuid.h"
 #include "core/hle/service/glue/manager.h"
 #include "core/hle/service/service.h"
 
@@ -36,9 +37,13 @@ public:
         void ListQualifiedUsers(Kernel::HLERequestContext& ctx);
         void LoadOpenContext(Kernel::HLERequestContext& ctx);
         void ListOpenContextStoredUsers(Kernel::HLERequestContext& ctx);
+        void StoreSaveDataThumbnailApplication(Kernel::HLERequestContext& ctx);
+        void StoreSaveDataThumbnailSystem(Kernel::HLERequestContext& ctx);
 
     private:
         ResultCode InitializeApplicationInfoBase();
+        void StoreSaveDataThumbnail(Kernel::HLERequestContext& ctx, const Common::UUID& uuid,
+                                    const u64 tid);
 
         enum class ApplicationType : u32_le {
             GameCard = 0,
diff --git a/src/core/hle/service/acc/acc_su.cpp b/src/core/hle/service/acc/acc_su.cpp
index d2bb8c2c8..49b22583e 100644
--- a/src/core/hle/service/acc/acc_su.cpp
+++ b/src/core/hle/service/acc/acc_su.cpp
@@ -29,7 +29,7 @@ ACC_SU::ACC_SU(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> p
         {104, nullptr, "GetProfileUpdateNotifier"},
         {105, nullptr, "CheckNetworkServiceAvailabilityAsync"}, // 4.0.0+
         {106, nullptr, "GetProfileSyncNotifier"}, // 9.0.0+
-        {110, nullptr, "StoreSaveDataThumbnail"},
+        {110, &ACC_SU::StoreSaveDataThumbnailSystem, "StoreSaveDataThumbnail"},
         {111, nullptr, "ClearSaveDataThumbnail"},
         {112, nullptr, "LoadSaveDataThumbnail"},
         {113, nullptr, "GetSaveDataThumbnailExistence"}, // 5.0.0+
diff --git a/src/core/hle/service/acc/acc_u0.cpp b/src/core/hle/service/acc/acc_u0.cpp
index 75a24f8f5..8d66d180d 100644
--- a/src/core/hle/service/acc/acc_u0.cpp
+++ b/src/core/hle/service/acc/acc_u0.cpp
@@ -26,7 +26,7 @@ ACC_U0::ACC_U0(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> p
         {101, &ACC_U0::GetBaasAccountManagerForApplication, "GetBaasAccountManagerForApplication"},
         {102, nullptr, "AuthenticateApplicationAsync"},
         {103, nullptr, "CheckNetworkServiceAvailabilityAsync"}, // 4.0.0+
-        {110, nullptr, "StoreSaveDataThumbnail"},
+        {110, &ACC_U0::StoreSaveDataThumbnailApplication, "StoreSaveDataThumbnail"},
         {111, nullptr, "ClearSaveDataThumbnail"},
         {120, nullptr, "CreateGuestLoginRequest"},
         {130, &ACC_U0::LoadOpenContext, "LoadOpenContext"}, // 5.0.0+
diff --git a/src/core/hle/service/acc/acc_u1.cpp b/src/core/hle/service/acc/acc_u1.cpp
index a4aa5316a..951081cd0 100644
--- a/src/core/hle/service/acc/acc_u1.cpp
+++ b/src/core/hle/service/acc/acc_u1.cpp
@@ -29,7 +29,7 @@ ACC_U1::ACC_U1(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> p
         {104, nullptr, "GetProfileUpdateNotifier"},
         {105, nullptr, "CheckNetworkServiceAvailabilityAsync"}, // 4.0.0+
         {106, nullptr, "GetProfileSyncNotifier"}, // 9.0.0+
-        {110, nullptr, "StoreSaveDataThumbnail"},
+        {110, &ACC_U1::StoreSaveDataThumbnailApplication, "StoreSaveDataThumbnail"},
         {111, nullptr, "ClearSaveDataThumbnail"},
         {112, nullptr, "LoadSaveDataThumbnail"},
         {113, nullptr, "GetSaveDataThumbnailExistence"}, // 5.0.0+
diff --git a/src/core/hle/service/am/am.cpp b/src/core/hle/service/am/am.cpp
index c9808060a..1743bcb2b 100644
--- a/src/core/hle/service/am/am.cpp
+++ b/src/core/hle/service/am/am.cpp
@@ -856,7 +856,7 @@ public:
             {25, nullptr, "Terminate"},
             {30, &ILibraryAppletAccessor::GetResult, "GetResult"},
             {50, nullptr, "SetOutOfFocusApplicationSuspendingEnabled"},
-            {60, nullptr, "PresetLibraryAppletGpuTimeSliceZero"},
+            {60, &ILibraryAppletAccessor::PresetLibraryAppletGpuTimeSliceZero, "PresetLibraryAppletGpuTimeSliceZero"},
             {100, &ILibraryAppletAccessor::PushInData, "PushInData"},
             {101, &ILibraryAppletAccessor::PopOutData, "PopOutData"},
             {102, nullptr, "PushExtraStorage"},
@@ -900,6 +900,13 @@ private:
         rb.Push(applet->GetStatus());
     }
 
+    void PresetLibraryAppletGpuTimeSliceZero(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_AM, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
     void Start(Kernel::HLERequestContext& ctx) {
         LOG_DEBUG(Service_AM, "called");
 
diff --git a/src/core/hle/service/hid/controllers/touchscreen.cpp b/src/core/hle/service/hid/controllers/touchscreen.cpp
index 0df395e85..5219f2dad 100644
--- a/src/core/hle/service/hid/controllers/touchscreen.cpp
+++ b/src/core/hle/service/hid/controllers/touchscreen.cpp
@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <algorithm>
 #include <cstring>
 #include "common/common_types.h"
 #include "core/core_timing.h"
@@ -16,7 +17,13 @@ constexpr std::size_t SHARED_MEMORY_OFFSET = 0x400;
 Controller_Touchscreen::Controller_Touchscreen(Core::System& system) : ControllerBase(system) {}
 Controller_Touchscreen::~Controller_Touchscreen() = default;
 
-void Controller_Touchscreen::OnInit() {}
+void Controller_Touchscreen::OnInit() {
+    for (std::size_t id = 0; id < MAX_FINGERS; ++id) {
+        mouse_finger_id[id] = MAX_FINGERS;
+        keyboard_finger_id[id] = MAX_FINGERS;
+        udp_finger_id[id] = MAX_FINGERS;
+    }
+}
 
 void Controller_Touchscreen::OnRelease() {}
 
@@ -40,38 +47,106 @@ void Controller_Touchscreen::OnUpdate(const Core::Timing::CoreTiming& core_timin
     cur_entry.sampling_number = last_entry.sampling_number + 1;
     cur_entry.sampling_number2 = cur_entry.sampling_number;
 
-    bool pressed = false;
-    float x, y;
-    std::tie(x, y, pressed) = touch_device->GetStatus();
-    auto& touch_entry = cur_entry.states[0];
-    touch_entry.attribute.raw = 0;
-    if (!pressed && touch_btn_device) {
-        std::tie(x, y, pressed) = touch_btn_device->GetStatus();
+    const Input::TouchStatus& mouse_status = touch_mouse_device->GetStatus();
+    const Input::TouchStatus& udp_status = touch_udp_device->GetStatus();
+    for (std::size_t id = 0; id < mouse_status.size(); ++id) {
+        mouse_finger_id[id] = UpdateTouchInputEvent(mouse_status[id], mouse_finger_id[id]);
+        udp_finger_id[id] = UpdateTouchInputEvent(udp_status[id], udp_finger_id[id]);
     }
-    if (pressed && Settings::values.touchscreen.enabled) {
-        touch_entry.x = static_cast<u16>(x * Layout::ScreenUndocked::Width);
-        touch_entry.y = static_cast<u16>(y * Layout::ScreenUndocked::Height);
-        touch_entry.diameter_x = Settings::values.touchscreen.diameter_x;
-        touch_entry.diameter_y = Settings::values.touchscreen.diameter_y;
-        touch_entry.rotation_angle = Settings::values.touchscreen.rotation_angle;
-        const u64 tick = core_timing.GetCPUTicks();
-        touch_entry.delta_time = tick - last_touch;
-        last_touch = tick;
-        touch_entry.finger = Settings::values.touchscreen.finger;
-        cur_entry.entry_count = 1;
-    } else {
-        cur_entry.entry_count = 0;
+
+    if (Settings::values.use_touch_from_button) {
+        const Input::TouchStatus& keyboard_status = touch_btn_device->GetStatus();
+        for (std::size_t id = 0; id < mouse_status.size(); ++id) {
+            keyboard_finger_id[id] =
+                UpdateTouchInputEvent(keyboard_status[id], keyboard_finger_id[id]);
+        }
     }
 
+    std::array<Finger, 16> active_fingers;
+    const auto end_iter = std::copy_if(fingers.begin(), fingers.end(), active_fingers.begin(),
+                                       [](const auto& finger) { return finger.pressed; });
+    const auto active_fingers_count =
+        static_cast<std::size_t>(std::distance(active_fingers.begin(), end_iter));
+
+    const u64 tick = core_timing.GetCPUTicks();
+    cur_entry.entry_count = static_cast<s32_le>(active_fingers_count);
+    for (std::size_t id = 0; id < MAX_FINGERS; ++id) {
+        auto& touch_entry = cur_entry.states[id];
+        if (id < active_fingers_count) {
+            touch_entry.x = static_cast<u16>(active_fingers[id].x * Layout::ScreenUndocked::Width);
+            touch_entry.y = static_cast<u16>(active_fingers[id].y * Layout::ScreenUndocked::Height);
+            touch_entry.diameter_x = Settings::values.touchscreen.diameter_x;
+            touch_entry.diameter_y = Settings::values.touchscreen.diameter_y;
+            touch_entry.rotation_angle = Settings::values.touchscreen.rotation_angle;
+            touch_entry.delta_time = tick - active_fingers[id].last_touch;
+            fingers[active_fingers[id].id].last_touch = tick;
+            touch_entry.finger = active_fingers[id].id;
+            touch_entry.attribute.raw = active_fingers[id].attribute.raw;
+        } else {
+            // Clear touch entry
+            touch_entry.attribute.raw = 0;
+            touch_entry.x = 0;
+            touch_entry.y = 0;
+            touch_entry.diameter_x = 0;
+            touch_entry.diameter_y = 0;
+            touch_entry.rotation_angle = 0;
+            touch_entry.delta_time = 0;
+            touch_entry.finger = 0;
+        }
+    }
     std::memcpy(data + SHARED_MEMORY_OFFSET, &shared_memory, sizeof(TouchScreenSharedMemory));
 }
 
 void Controller_Touchscreen::OnLoadInputDevices() {
-    touch_device = Input::CreateDevice<Input::TouchDevice>(Settings::values.touchscreen.device);
-    if (Settings::values.use_touch_from_button) {
-        touch_btn_device = Input::CreateDevice<Input::TouchDevice>("engine:touch_from_button");
-    } else {
-        touch_btn_device.reset();
+    touch_mouse_device = Input::CreateDevice<Input::TouchDevice>("engine:emu_window");
+    touch_udp_device = Input::CreateDevice<Input::TouchDevice>("engine:cemuhookudp");
+    touch_btn_device = Input::CreateDevice<Input::TouchDevice>("engine:touch_from_button");
+}
+
+std::optional<std::size_t> Controller_Touchscreen::GetUnusedFingerID() const {
+    std::size_t first_free_id = 0;
+    while (first_free_id < MAX_FINGERS) {
+        if (!fingers[first_free_id].pressed) {
+            return first_free_id;
+        } else {
+            first_free_id++;
+        }
+    }
+    return std::nullopt;
+}
+
+std::size_t Controller_Touchscreen::UpdateTouchInputEvent(
+    const std::tuple<float, float, bool>& touch_input, std::size_t finger_id) {
+    const auto& [x, y, pressed] = touch_input;
+    if (pressed) {
+        Attributes attribute{};
+        if (finger_id == MAX_FINGERS) {
+            const auto first_free_id = GetUnusedFingerID();
+            if (!first_free_id) {
+                // Invalid finger id do nothing
+                return MAX_FINGERS;
+            }
+            finger_id = first_free_id.value();
+            fingers[finger_id].pressed = true;
+            fingers[finger_id].id = static_cast<u32_le>(finger_id);
+            attribute.start_touch.Assign(1);
+        }
+        fingers[finger_id].x = x;
+        fingers[finger_id].y = y;
+        fingers[finger_id].attribute = attribute;
+        return finger_id;
     }
+
+    if (finger_id != MAX_FINGERS) {
+        if (!fingers[finger_id].attribute.end_touch) {
+            fingers[finger_id].attribute.end_touch.Assign(1);
+            fingers[finger_id].attribute.start_touch.Assign(0);
+            return finger_id;
+        }
+        fingers[finger_id].pressed = false;
+    }
+
+    return MAX_FINGERS;
 }
+
 } // namespace Service::HID
diff --git a/src/core/hle/service/hid/controllers/touchscreen.h b/src/core/hle/service/hid/controllers/touchscreen.h
index 4d9042adc..784124e25 100644
--- a/src/core/hle/service/hid/controllers/touchscreen.h
+++ b/src/core/hle/service/hid/controllers/touchscreen.h
@@ -30,6 +30,18 @@ public:
     void OnLoadInputDevices() override;
 
 private:
+    static constexpr std::size_t MAX_FINGERS = 16;
+
+    // Returns an unused finger id, if there is no fingers available std::nullopt will be returned
+    std::optional<std::size_t> GetUnusedFingerID() const;
+
+    // If the touch is new it tries to assing a new finger id, if there is no fingers avaliable no
+    // changes will be made. Updates the coordinates if the finger id it's already set. If the touch
+    // ends delays the output by one frame to set the end_touch flag before finally freeing the
+    // finger id
+    std::size_t UpdateTouchInputEvent(const std::tuple<float, float, bool>& touch_input,
+                                      std::size_t finger_id);
+
     struct Attributes {
         union {
             u32 raw{};
@@ -55,7 +67,7 @@ private:
         s64_le sampling_number;
         s64_le sampling_number2;
         s32_le entry_count;
-        std::array<TouchState, 16> states;
+        std::array<TouchState, MAX_FINGERS> states;
     };
     static_assert(sizeof(TouchScreenEntry) == 0x298, "TouchScreenEntry is an invalid size");
 
@@ -66,9 +78,23 @@ private:
     };
     static_assert(sizeof(TouchScreenSharedMemory) == 0x3000,
                   "TouchScreenSharedMemory is an invalid size");
+
+    struct Finger {
+        u64_le last_touch{};
+        float x{};
+        float y{};
+        u32_le id{};
+        bool pressed{};
+        Attributes attribute;
+    };
+
     TouchScreenSharedMemory shared_memory{};
-    std::unique_ptr<Input::TouchDevice> touch_device;
+    std::unique_ptr<Input::TouchDevice> touch_mouse_device;
+    std::unique_ptr<Input::TouchDevice> touch_udp_device;
     std::unique_ptr<Input::TouchDevice> touch_btn_device;
-    s64_le last_touch{};
+    std::array<std::size_t, MAX_FINGERS> mouse_finger_id;
+    std::array<std::size_t, MAX_FINGERS> keyboard_finger_id;
+    std::array<std::size_t, MAX_FINGERS> udp_finger_id;
+    std::array<Finger, MAX_FINGERS> fingers;
 };
 } // namespace Service::HID
diff --git a/src/core/hle/service/lbl/lbl.cpp b/src/core/hle/service/lbl/lbl.cpp
index 6ad3a2877..f4490f3d9 100644
--- a/src/core/hle/service/lbl/lbl.cpp
+++ b/src/core/hle/service/lbl/lbl.cpp
@@ -20,30 +20,30 @@ public:
         static const FunctionInfo functions[] = {
             {0, nullptr, "SaveCurrentSetting"},
             {1, nullptr, "LoadCurrentSetting"},
-            {2, nullptr, "SetCurrentBrightnessSetting"},
-            {3, nullptr, "GetCurrentBrightnessSetting"},
+            {2, &LBL::SetCurrentBrightnessSetting, "SetCurrentBrightnessSetting"},
+            {3, &LBL::GetCurrentBrightnessSetting, "GetCurrentBrightnessSetting"},
             {4, nullptr, "ApplyCurrentBrightnessSettingToBacklight"},
             {5, nullptr, "GetBrightnessSettingAppliedToBacklight"},
-            {6, nullptr, "SwitchBacklightOn"},
-            {7, nullptr, "SwitchBacklightOff"},
-            {8, nullptr, "GetBacklightSwitchStatus"},
-            {9, nullptr, "EnableDimming"},
-            {10, nullptr, "DisableDimming"},
-            {11, nullptr, "IsDimmingEnabled"},
-            {12, nullptr, "EnableAutoBrightnessControl"},
-            {13, nullptr, "DisableAutoBrightnessControl"},
-            {14, nullptr, "IsAutoBrightnessControlEnabled"},
-            {15, nullptr, "SetAmbientLightSensorValue"},
-            {16, nullptr, "GetAmbientLightSensorValue"},
-            {17, nullptr, "SetBrightnessReflectionDelayLevel"},
-            {18, nullptr, "GetBrightnessReflectionDelayLevel"},
-            {19, nullptr, "SetCurrentBrightnessMapping"},
-            {20, nullptr, "GetCurrentBrightnessMapping"},
-            {21, nullptr, "SetCurrentAmbientLightSensorMapping"},
-            {22, nullptr, "GetCurrentAmbientLightSensorMapping"},
-            {23, nullptr, "IsAmbientLightSensorAvailable"},
-            {24, nullptr, "SetCurrentBrightnessSettingForVrMode"},
-            {25, nullptr, "GetCurrentBrightnessSettingForVrMode"},
+            {6, &LBL::SwitchBacklightOn, "SwitchBacklightOn"},
+            {7, &LBL::SwitchBacklightOff, "SwitchBacklightOff"},
+            {8, &LBL::GetBacklightSwitchStatus, "GetBacklightSwitchStatus"},
+            {9, &LBL::EnableDimming, "EnableDimming"},
+            {10, &LBL::DisableDimming, "DisableDimming"},
+            {11, &LBL::IsDimmingEnabled, "IsDimmingEnabled"},
+            {12, &LBL::EnableAutoBrightnessControl, "EnableAutoBrightnessControl"},
+            {13, &LBL::DisableAutoBrightnessControl, "DisableAutoBrightnessControl"},
+            {14, &LBL::IsAutoBrightnessControlEnabled, "IsAutoBrightnessControlEnabled"},
+            {15, &LBL::SetAmbientLightSensorValue, "SetAmbientLightSensorValue"},
+            {16, &LBL::GetAmbientLightSensorValue, "GetAmbientLightSensorValue"},
+            {17, &LBL::SetBrightnessReflectionDelayLevel, "SetBrightnessReflectionDelayLevel"},
+            {18, &LBL::GetBrightnessReflectionDelayLevel, "GetBrightnessReflectionDelayLevel"},
+            {19, &LBL::SetCurrentBrightnessMapping, "SetCurrentBrightnessMapping"},
+            {20, &LBL::GetCurrentBrightnessMapping, "GetCurrentBrightnessMapping"},
+            {21, &LBL::SetCurrentAmbientLightSensorMapping, "SetCurrentAmbientLightSensorMapping"},
+            {22, &LBL::GetCurrentAmbientLightSensorMapping, "GetCurrentAmbientLightSensorMapping"},
+            {23, &LBL::IsAmbientLightSensorAvailable, "IsAmbientLightSensorAvailable"},
+            {24, &LBL::SetCurrentBrightnessSettingForVrMode, "SetCurrentBrightnessSettingForVrMode"},
+            {25, &LBL::GetCurrentBrightnessSettingForVrMode, "GetCurrentBrightnessSettingForVrMode"},
             {26, &LBL::EnableVrMode, "EnableVrMode"},
             {27, &LBL::DisableVrMode, "DisableVrMode"},
             {28, &LBL::IsVrModeEnabled, "IsVrModeEnabled"},
@@ -55,6 +55,237 @@ public:
     }
 
 private:
+    enum class BacklightSwitchStatus : u32 {
+        Off = 0,
+        On = 1,
+    };
+
+    void SetCurrentBrightnessSetting(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        auto brightness = rp.Pop<float>();
+
+        if (!std::isfinite(brightness)) {
+            LOG_ERROR(Service_LBL, "Brightness is infinite!");
+            brightness = 0.0f;
+        }
+
+        LOG_DEBUG(Service_LBL, "called brightness={}", brightness);
+
+        current_brightness = brightness;
+        update_instantly = true;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetCurrentBrightnessSetting(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        auto brightness = current_brightness;
+        if (!std::isfinite(brightness)) {
+            LOG_ERROR(Service_LBL, "Brightness is infinite!");
+            brightness = 0.0f;
+        }
+
+        LOG_DEBUG(Service_LBL, "called brightness={}", brightness);
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(brightness);
+    }
+
+    void SwitchBacklightOn(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto fade_time = rp.Pop<u64_le>();
+        LOG_WARNING(Service_LBL, "(STUBBED) called, fade_time={}", fade_time);
+
+        backlight_enabled = true;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void SwitchBacklightOff(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto fade_time = rp.Pop<u64_le>();
+        LOG_WARNING(Service_LBL, "(STUBBED) called, fade_time={}", fade_time);
+
+        backlight_enabled = false;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetBacklightSwitchStatus(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushEnum<BacklightSwitchStatus>(backlight_enabled ? BacklightSwitchStatus::On
+                                                             : BacklightSwitchStatus::Off);
+    }
+
+    void EnableDimming(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_LBL, "called");
+
+        dimming = true;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void DisableDimming(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_LBL, "called");
+
+        dimming = false;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void IsDimmingEnabled(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(dimming);
+    }
+
+    void EnableAutoBrightnessControl(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_LBL, "called");
+        auto_brightness = true;
+        update_instantly = true;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void DisableAutoBrightnessControl(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_LBL, "called");
+        auto_brightness = false;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void IsAutoBrightnessControlEnabled(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(auto_brightness);
+    }
+
+    void SetAmbientLightSensorValue(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto light_value = rp.Pop<float>();
+
+        LOG_DEBUG(Service_LBL, "called light_value={}", light_value);
+
+        ambient_light_value = light_value;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetAmbientLightSensorValue(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(ambient_light_value);
+    }
+
+    void SetBrightnessReflectionDelayLevel(Kernel::HLERequestContext& ctx) {
+        // This is Intentional, this function does absolutely nothing
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetBrightnessReflectionDelayLevel(Kernel::HLERequestContext& ctx) {
+        // This is intentional, the function is hard coded to return 0.0f on hardware
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(0.0f);
+    }
+
+    void SetCurrentBrightnessMapping(Kernel::HLERequestContext& ctx) {
+        // This is Intentional, this function does absolutely nothing
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetCurrentBrightnessMapping(Kernel::HLERequestContext& ctx) {
+        // This is Intentional, this function does absolutely nothing
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+        // This function is suppose to return something but it seems like it doesn't
+    }
+
+    void SetCurrentAmbientLightSensorMapping(Kernel::HLERequestContext& ctx) {
+        // This is Intentional, this function does absolutely nothing
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetCurrentAmbientLightSensorMapping(Kernel::HLERequestContext& ctx) {
+        // This is Intentional, this function does absolutely nothing
+        LOG_DEBUG(Service_LBL, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+        // This function is suppose to return something but it seems like it doesn't
+    }
+
+    void IsAmbientLightSensorAvailable(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_LBL, "(STUBBED) called");
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        // TODO(ogniK): Only return true if there's no device error
+        rb.Push(true);
+    }
+
+    void SetCurrentBrightnessSettingForVrMode(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        auto brightness = rp.Pop<float>();
+
+        if (!std::isfinite(brightness)) {
+            LOG_ERROR(Service_LBL, "Brightness is infinite!");
+            brightness = 0.0f;
+        }
+
+        LOG_DEBUG(Service_LBL, "called brightness={}", brightness);
+
+        current_vr_brightness = brightness;
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetCurrentBrightnessSettingForVrMode(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        auto brightness = current_vr_brightness;
+        if (!std::isfinite(brightness)) {
+            LOG_ERROR(Service_LBL, "Brightness is infinite!");
+            brightness = 0.0f;
+        }
+
+        LOG_DEBUG(Service_LBL, "called brightness={}", brightness);
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(brightness);
+    }
+
     void EnableVrMode(Kernel::HLERequestContext& ctx) {
         LOG_DEBUG(Service_LBL, "called");
 
@@ -82,6 +313,14 @@ private:
     }
 
     bool vr_mode_enabled = false;
+    float current_brightness = 1.0f;
+    float backlight_brightness = 1.0f;
+    float ambient_light_value = 0.0f;
+    float current_vr_brightness = 1.0f;
+    bool dimming = true;
+    bool backlight_enabled = true;
+    bool update_instantly = false;
+    bool auto_brightness = false; // TODO(ogniK): Move to system settings
 };
 
 void InstallInterfaces(SM::ServiceManager& sm, Core::System& system) {
diff --git a/src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp b/src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp
index fea3b7b9f..060599bab 100644
--- a/src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp
+++ b/src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp
@@ -155,7 +155,13 @@ NvResult nvhost_ctrl::IocCtrlEventRegister(const std::vector<u8>& input, std::ve
         return NvResult::BadParameter;
     }
     if (events_interface.registered[event_id]) {
-        return NvResult::BadParameter;
+        const auto event_state = events_interface.status[event_id];
+        if (event_state != EventState::Free) {
+            LOG_WARNING(Service_NVDRV, "Event already registered! Unregistering previous event");
+            events_interface.UnregisterEvent(event_id);
+        } else {
+            return NvResult::BadParameter;
+        }
     }
     events_interface.RegisterEvent(event_id);
     return NvResult::Success;