input_common: Eliminate most global state

Abstracts most of the input mechanisms under an InputSubsystem class
that is managed by the frontends, eliminating any static constructors
and destructors. This gets rid of global accessor functions and also
allows the frontends to have a more fine-grained control over the
lifecycle of the input subsystem.

This also makes it explicit which interfaces rely on the input subsystem
instead of making it opaque in the interface functions. All that remains
to migrate over is the factories, which can be done in a separate
change.

25 files changed, 396 insertions, 242 deletions

diff --git a/src/input_common/main.cpp b/src/input_common/main.cpp
index 8e67a7437..57e7a25fe 100644
--- a/src/input_common/main.cpp
+++ b/src/input_common/main.cpp
@@ -18,66 +18,166 @@
 
 namespace InputCommon {
 
-static std::shared_ptr<Keyboard> keyboard;
-static std::shared_ptr<MotionEmu> motion_emu;
+struct InputSubsystem::Impl {
+    void Initialize() {
+        auto gcadapter = std::make_shared<GCAdapter::Adapter>();
+        gcbuttons = std::make_shared<GCButtonFactory>(gcadapter);
+        Input::RegisterFactory<Input::ButtonDevice>("gcpad", gcbuttons);
+        gcanalog = std::make_shared<GCAnalogFactory>(gcadapter);
+        Input::RegisterFactory<Input::AnalogDevice>("gcpad", gcanalog);
+
+        keyboard = std::make_shared<Keyboard>();
+        Input::RegisterFactory<Input::ButtonDevice>("keyboard", keyboard);
+        Input::RegisterFactory<Input::AnalogDevice>("analog_from_button",
+                                                    std::make_shared<AnalogFromButton>());
+        motion_emu = std::make_shared<MotionEmu>();
+        Input::RegisterFactory<Input::MotionDevice>("motion_emu", motion_emu);
+
 #ifdef HAVE_SDL2
-static std::unique_ptr<SDL::State> sdl;
+        sdl = SDL::Init();
 #endif
-static std::unique_ptr<CemuhookUDP::State> udp;
-static std::shared_ptr<GCButtonFactory> gcbuttons;
-static std::shared_ptr<GCAnalogFactory> gcanalog;
-
-void Init() {
-    auto gcadapter = std::make_shared<GCAdapter::Adapter>();
-    gcbuttons = std::make_shared<GCButtonFactory>(gcadapter);
-    Input::RegisterFactory<Input::ButtonDevice>("gcpad", gcbuttons);
-    gcanalog = std::make_shared<GCAnalogFactory>(gcadapter);
-    Input::RegisterFactory<Input::AnalogDevice>("gcpad", gcanalog);
-
-    keyboard = std::make_shared<Keyboard>();
-    Input::RegisterFactory<Input::ButtonDevice>("keyboard", keyboard);
-    Input::RegisterFactory<Input::AnalogDevice>("analog_from_button",
-                                                std::make_shared<AnalogFromButton>());
-    motion_emu = std::make_shared<MotionEmu>();
-    Input::RegisterFactory<Input::MotionDevice>("motion_emu", motion_emu);
 
+        udp = CemuhookUDP::Init();
+    }
+
+    void Shutdown() {
+        Input::UnregisterFactory<Input::ButtonDevice>("keyboard");
+        keyboard.reset();
+        Input::UnregisterFactory<Input::AnalogDevice>("analog_from_button");
+        Input::UnregisterFactory<Input::MotionDevice>("motion_emu");
+        motion_emu.reset();
 #ifdef HAVE_SDL2
-    sdl = SDL::Init();
+        sdl.reset();
 #endif
-    udp = CemuhookUDP::Init();
-}
+        udp.reset();
+        Input::UnregisterFactory<Input::ButtonDevice>("gcpad");
+        Input::UnregisterFactory<Input::AnalogDevice>("gcpad");
+
+        gcbuttons.reset();
+        gcanalog.reset();
+    }
+
+    [[nodiscard]] std::vector<Common::ParamPackage> GetInputDevices() const {
+        std::vector<Common::ParamPackage> devices = {
+            Common::ParamPackage{{"display", "Any"}, {"class", "any"}},
+            Common::ParamPackage{{"display", "Keyboard/Mouse"}, {"class", "key"}},
+        };
+#ifdef HAVE_SDL2
+        auto sdl_devices = sdl->GetInputDevices();
+        devices.insert(devices.end(), sdl_devices.begin(), sdl_devices.end());
+#endif
+        auto udp_devices = udp->GetInputDevices();
+        devices.insert(devices.end(), udp_devices.begin(), udp_devices.end());
+        return devices;
+    }
+
+    [[nodiscard]] AnalogMapping GetAnalogMappingForDevice(
+        const Common::ParamPackage& params) const {
+        if (!params.Has("class") || params.Get("class", "") == "any") {
+            return {};
+        }
+        if (params.Get("class", "") == "key") {
+            // TODO consider returning the SDL key codes for the default keybindings
+            return {};
+        }
+#ifdef HAVE_SDL2
+        if (params.Get("class", "") == "sdl") {
+            return sdl->GetAnalogMappingForDevice(params);
+        }
+#endif
+        return {};
+    }
+
+    [[nodiscard]] ButtonMapping GetButtonMappingForDevice(
+        const Common::ParamPackage& params) const {
+        if (!params.Has("class") || params.Get("class", "") == "any") {
+            return {};
+        }
+        if (params.Get("class", "") == "key") {
+            // TODO consider returning the SDL key codes for the default keybindings
+            return {};
+        }
+#ifdef HAVE_SDL2
+        if (params.Get("class", "") == "sdl") {
+            return sdl->GetButtonMappingForDevice(params);
+        }
+#endif
+        return {};
+    }
 
-void Shutdown() {
-    Input::UnregisterFactory<Input::ButtonDevice>("keyboard");
-    keyboard.reset();
-    Input::UnregisterFactory<Input::AnalogDevice>("analog_from_button");
-    Input::UnregisterFactory<Input::MotionDevice>("motion_emu");
-    motion_emu.reset();
+    std::shared_ptr<Keyboard> keyboard;
+    std::shared_ptr<MotionEmu> motion_emu;
 #ifdef HAVE_SDL2
-    sdl.reset();
+    std::unique_ptr<SDL::State> sdl;
 #endif
-    udp.reset();
-    Input::UnregisterFactory<Input::ButtonDevice>("gcpad");
-    Input::UnregisterFactory<Input::AnalogDevice>("gcpad");
+    std::unique_ptr<CemuhookUDP::State> udp;
+    std::shared_ptr<GCButtonFactory> gcbuttons;
+    std::shared_ptr<GCAnalogFactory> gcanalog;
+};
+
+InputSubsystem::InputSubsystem() : impl{std::make_unique<Impl>()} {}
+
+InputSubsystem::~InputSubsystem() = default;
+
+void InputSubsystem::Initialize() {
+    impl->Initialize();
+}
+
+void InputSubsystem::Shutdown() {
+    impl->Shutdown();
+}
+
+Keyboard* InputSubsystem::GetKeyboard() {
+    return impl->keyboard.get();
+}
+
+const Keyboard* InputSubsystem::GetKeyboard() const {
+    return impl->keyboard.get();
+}
+
+MotionEmu* InputSubsystem::GetMotionEmu() {
+    return impl->motion_emu.get();
+}
+
+const MotionEmu* InputSubsystem::GetMotionEmu() const {
+    return impl->motion_emu.get();
+}
+
+std::vector<Common::ParamPackage> InputSubsystem::GetInputDevices() const {
+    return impl->GetInputDevices();
+}
+
+AnalogMapping InputSubsystem::GetAnalogMappingForDevice(const Common::ParamPackage& device) const {
+    return impl->GetAnalogMappingForDevice(device);
+}
 
-    gcbuttons.reset();
-    gcanalog.reset();
+ButtonMapping InputSubsystem::GetButtonMappingForDevice(const Common::ParamPackage& device) const {
+    return impl->GetButtonMappingForDevice(device);
 }
 
-Keyboard* GetKeyboard() {
-    return keyboard.get();
+GCAnalogFactory* InputSubsystem::GetGCAnalogs() {
+    return impl->gcanalog.get();
 }
 
-MotionEmu* GetMotionEmu() {
-    return motion_emu.get();
+const GCAnalogFactory* InputSubsystem::GetGCAnalogs() const {
+    return impl->gcanalog.get();
 }
 
-GCButtonFactory* GetGCButtons() {
-    return gcbuttons.get();
+GCButtonFactory* InputSubsystem::GetGCButtons() {
+    return impl->gcbuttons.get();
 }
 
-GCAnalogFactory* GetGCAnalogs() {
-    return gcanalog.get();
+const GCButtonFactory* InputSubsystem::GetGCButtons() const {
+    return impl->gcbuttons.get();
+}
+
+std::vector<std::unique_ptr<Polling::DevicePoller>> InputSubsystem::GetPollers(
+    Polling::DeviceType type) const {
+#ifdef HAVE_SDL2
+    return impl->sdl->GetPollers(type);
+#else
+    return {};
+#endif
 }
 
 std::string GenerateKeyboardParam(int key_code) {
@@ -101,68 +201,4 @@ std::string GenerateAnalogParamFromKeys(int key_up, int key_down, int key_left,
     };
     return circle_pad_param.Serialize();
 }
-
-std::vector<Common::ParamPackage> GetInputDevices() {
-    std::vector<Common::ParamPackage> devices = {
-        Common::ParamPackage{{"display", "Any"}, {"class", "any"}},
-        Common::ParamPackage{{"display", "Keyboard/Mouse"}, {"class", "key"}},
-    };
-#ifdef HAVE_SDL2
-    auto sdl_devices = sdl->GetInputDevices();
-    devices.insert(devices.end(), sdl_devices.begin(), sdl_devices.end());
-#endif
-    auto udp_devices = udp->GetInputDevices();
-    devices.insert(devices.end(), udp_devices.begin(), udp_devices.end());
-    return devices;
-}
-
-std::unordered_map<Settings::NativeButton::Values, Common::ParamPackage> GetButtonMappingForDevice(
-    const Common::ParamPackage& params) {
-    std::unordered_map<Settings::NativeButton::Values, Common::ParamPackage> mappings;
-    if (!params.Has("class") || params.Get("class", "") == "any") {
-        return {};
-    }
-    if (params.Get("class", "") == "key") {
-        // TODO consider returning the SDL key codes for the default keybindings
-        return {};
-    }
-#ifdef HAVE_SDL2
-    if (params.Get("class", "") == "sdl") {
-        return sdl->GetButtonMappingForDevice(params);
-    }
-#endif
-    return {};
-}
-
-std::unordered_map<Settings::NativeAnalog::Values, Common::ParamPackage> GetAnalogMappingForDevice(
-    const Common::ParamPackage& params) {
-    std::unordered_map<Settings::NativeAnalog::Values, Common::ParamPackage> mappings;
-    if (!params.Has("class") || params.Get("class", "") == "any") {
-        return {};
-    }
-    if (params.Get("class", "") == "key") {
-        // TODO consider returning the SDL key codes for the default keybindings
-        return {};
-    }
-#ifdef HAVE_SDL2
-    if (params.Get("class", "") == "sdl") {
-        return sdl->GetAnalogMappingForDevice(params);
-    }
-#endif
-    return {};
-}
-
-namespace Polling {
-
-std::vector<std::unique_ptr<DevicePoller>> GetPollers(DeviceType type) {
-    std::vector<std::unique_ptr<DevicePoller>> pollers;
-
-#ifdef HAVE_SDL2
-    pollers = sdl->GetPollers(type);
-#endif
-
-    return pollers;
-}
-
-} // namespace Polling
 } // namespace InputCommon
diff --git a/src/input_common/main.h b/src/input_common/main.h
index e706c3750..f66308163 100644
--- a/src/input_common/main.h
+++ b/src/input_common/main.h
@@ -16,52 +16,6 @@ class ParamPackage;
 }
 
 namespace InputCommon {
-
-/// Initializes and registers all built-in input device factories.
-void Init();
-
-/// Deregisters all built-in input device factories and shuts them down.
-void Shutdown();
-
-class Keyboard;
-
-/// Gets the keyboard button device factory.
-Keyboard* GetKeyboard();
-
-class MotionEmu;
-
-/// Gets the motion emulation factory.
-MotionEmu* GetMotionEmu();
-
-GCButtonFactory* GetGCButtons();
-
-GCAnalogFactory* GetGCAnalogs();
-
-/// Generates a serialized param package for creating a keyboard button device
-std::string GenerateKeyboardParam(int key_code);
-
-/// Generates a serialized param package for creating an analog device taking input from keyboard
-std::string GenerateAnalogParamFromKeys(int key_up, int key_down, int key_left, int key_right,
-                                        int key_modifier, float modifier_scale);
-
-/**
- * Return a list of available input devices that this Factory can create a new device with.
- * Each returned Parampackage should have a `display` field used for display, a class field for
- * backends to determine if this backend is meant to service the request and any other information
- * needed to identify this in the backend later.
- */
-std::vector<Common::ParamPackage> GetInputDevices();
-
-/**
- * Given a ParamPackage for a Device returned from `GetInputDevices`, attempt to get the default
- * mapping for the device. This is currently only implemented for the sdl backend devices.
- */
-using ButtonMapping = std::unordered_map<Settings::NativeButton::Values, Common::ParamPackage>;
-using AnalogMapping = std::unordered_map<Settings::NativeAnalog::Values, Common::ParamPackage>;
-
-ButtonMapping GetButtonMappingForDevice(const Common::ParamPackage&);
-AnalogMapping GetAnalogMappingForDevice(const Common::ParamPackage&);
-
 namespace Polling {
 
 enum class DeviceType { Button, AnalogPreferred };
@@ -90,4 +44,88 @@ public:
 // Get all DevicePoller from all backends for a specific device type
 std::vector<std::unique_ptr<DevicePoller>> GetPollers(DeviceType type);
 } // namespace Polling
+
+class GCAnalogFactory;
+class GCButtonFactory;
+class Keyboard;
+class MotionEmu;
+
+/**
+ * Given a ParamPackage for a Device returned from `GetInputDevices`, attempt to get the default
+ * mapping for the device. This is currently only implemented for the SDL backend devices.
+ */
+using AnalogMapping = std::unordered_map<Settings::NativeAnalog::Values, Common::ParamPackage>;
+using ButtonMapping = std::unordered_map<Settings::NativeButton::Values, Common::ParamPackage>;
+
+class InputSubsystem {
+public:
+    explicit InputSubsystem();
+    ~InputSubsystem();
+
+    InputSubsystem(const InputSubsystem&) = delete;
+    InputSubsystem& operator=(const InputSubsystem&) = delete;
+
+    InputSubsystem(InputSubsystem&&) = delete;
+    InputSubsystem& operator=(InputSubsystem&&) = delete;
+
+    /// Initializes and registers all built-in input device factories.
+    void Initialize();
+
+    /// Unregisters all built-in input device factories and shuts them down.
+    void Shutdown();
+
+    /// Retrieves the underlying keyboard device.
+    [[nodiscard]] Keyboard* GetKeyboard();
+
+    /// Retrieves the underlying keyboard device.
+    [[nodiscard]] const Keyboard* GetKeyboard() const;
+
+    /// Retrieves the underlying motion emulation factory.
+    [[nodiscard]] MotionEmu* GetMotionEmu();
+
+    /// Retrieves the underlying motion emulation factory.
+    [[nodiscard]] const MotionEmu* GetMotionEmu() const;
+
+    /**
+     * Returns all available input devices that this Factory can create a new device with.
+     * Each returned ParamPackage should have a `display` field used for display, a class field for
+     * backends to determine if this backend is meant to service the request and any other
+     * information needed to identify this in the backend later.
+     */
+    [[nodiscard]] std::vector<Common::ParamPackage> GetInputDevices() const;
+
+    /// Retrieves the analog mappings for the given device.
+    [[nodiscard]] AnalogMapping GetAnalogMappingForDevice(const Common::ParamPackage& device) const;
+
+    /// Retrieves the button mappings for the given device.
+    [[nodiscard]] ButtonMapping GetButtonMappingForDevice(const Common::ParamPackage& device) const;
+
+    /// Retrieves the underlying GameCube analog handler.
+    [[nodiscard]] GCAnalogFactory* GetGCAnalogs();
+
+    /// Retrieves the underlying GameCube analog handler.
+    [[nodiscard]] const GCAnalogFactory* GetGCAnalogs() const;
+
+    /// Retrieves the underlying GameCube button handler.
+    [[nodiscard]] GCButtonFactory* GetGCButtons();
+
+    /// Retrieves the underlying GameCube button handler.
+    [[nodiscard]] const GCButtonFactory* GetGCButtons() const;
+
+    /// Get all DevicePoller from all backends for a specific device type
+    [[nodiscard]] std::vector<std::unique_ptr<Polling::DevicePoller>> GetPollers(
+        Polling::DeviceType type) const;
+
+private:
+    struct Impl;
+    std::unique_ptr<Impl> impl;
+};
+
+/// Generates a serialized param package for creating a keyboard button device
+std::string GenerateKeyboardParam(int key_code);
+
+/// Generates a serialized param package for creating an analog device taking input from keyboard
+std::string GenerateAnalogParamFromKeys(int key_up, int key_down, int key_left, int key_right,
+                                        int key_modifier, float modifier_scale);
+
 } // namespace InputCommon
diff --git a/src/yuzu/bootmanager.cpp b/src/yuzu/bootmanager.cpp
index 8fc322b30..f1b428bde 100644
--- a/src/yuzu/bootmanager.cpp
+++ b/src/yuzu/bootmanager.cpp
@@ -304,8 +304,9 @@ static Core::Frontend::EmuWindow::WindowSystemInfo GetWindowSystemInfo(QWindow*
     return wsi;
 }
 
-GRenderWindow::GRenderWindow(GMainWindow* parent_, EmuThread* emu_thread_)
-    : QWidget(parent_), emu_thread(emu_thread_) {
+GRenderWindow::GRenderWindow(GMainWindow* parent, EmuThread* emu_thread_,
+                             InputCommon::InputSubsystem* input_subsystem_)
+    : QWidget(parent), emu_thread(emu_thread_), input_subsystem{input_subsystem_} {
     setWindowTitle(QStringLiteral("yuzu %1 | %2-%3")
                        .arg(QString::fromUtf8(Common::g_build_name),
                             QString::fromUtf8(Common::g_scm_branch),
@@ -314,15 +315,15 @@ GRenderWindow::GRenderWindow(GMainWindow* parent_, EmuThread* emu_thread_)
     auto layout = new QHBoxLayout(this);
     layout->setMargin(0);
     setLayout(layout);
-    InputCommon::Init();
+    input_subsystem->Initialize();
 
     this->setMouseTracking(true);
 
-    connect(this, &GRenderWindow::FirstFrameDisplayed, parent_, &GMainWindow::OnLoadComplete);
+    connect(this, &GRenderWindow::FirstFrameDisplayed, parent, &GMainWindow::OnLoadComplete);
 }
 
 GRenderWindow::~GRenderWindow() {
-    InputCommon::Shutdown();
+    input_subsystem->Shutdown();
 }
 
 void GRenderWindow::PollEvents() {
@@ -391,11 +392,11 @@ void GRenderWindow::closeEvent(QCloseEvent* event) {
 }
 
 void GRenderWindow::keyPressEvent(QKeyEvent* event) {
-    InputCommon::GetKeyboard()->PressKey(event->key());
+    input_subsystem->GetKeyboard()->PressKey(event->key());
 }
 
 void GRenderWindow::keyReleaseEvent(QKeyEvent* event) {
-    InputCommon::GetKeyboard()->ReleaseKey(event->key());
+    input_subsystem->GetKeyboard()->ReleaseKey(event->key());
 }
 
 void GRenderWindow::mousePressEvent(QMouseEvent* event) {
@@ -409,7 +410,7 @@ void GRenderWindow::mousePressEvent(QMouseEvent* event) {
         const auto [x, y] = ScaleTouch(pos);
         this->TouchPressed(x, y);
     } else if (event->button() == Qt::RightButton) {
-        InputCommon::GetMotionEmu()->BeginTilt(pos.x(), pos.y());
+        input_subsystem->GetMotionEmu()->BeginTilt(pos.x(), pos.y());
     }
     QWidget::mousePressEvent(event);
 }
@@ -423,7 +424,7 @@ void GRenderWindow::mouseMoveEvent(QMouseEvent* event) {
     auto pos = event->pos();
     const auto [x, y] = ScaleTouch(pos);
     this->TouchMoved(x, y);
-    InputCommon::GetMotionEmu()->Tilt(pos.x(), pos.y());
+    input_subsystem->GetMotionEmu()->Tilt(pos.x(), pos.y());
     QWidget::mouseMoveEvent(event);
 }
 
@@ -436,7 +437,7 @@ void GRenderWindow::mouseReleaseEvent(QMouseEvent* event) {
     if (event->button() == Qt::LeftButton) {
         this->TouchReleased();
     } else if (event->button() == Qt::RightButton) {
-        InputCommon::GetMotionEmu()->EndTilt();
+        input_subsystem->GetMotionEmu()->EndTilt();
     }
 }
 
@@ -485,7 +486,7 @@ bool GRenderWindow::event(QEvent* event) {
 
 void GRenderWindow::focusOutEvent(QFocusEvent* event) {
     QWidget::focusOutEvent(event);
-    InputCommon::GetKeyboard()->ReleaseAllKeys();
+    input_subsystem->GetKeyboard()->ReleaseAllKeys();
 }
 
 void GRenderWindow::resizeEvent(QResizeEvent* event) {
diff --git a/src/yuzu/bootmanager.h b/src/yuzu/bootmanager.h
index 6c59b4d5c..ecb3b8135 100644
--- a/src/yuzu/bootmanager.h
+++ b/src/yuzu/bootmanager.h
@@ -23,6 +23,10 @@ class QKeyEvent;
 class QTouchEvent;
 class QStringList;
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 namespace VideoCore {
 enum class LoadCallbackStage;
 }
@@ -121,7 +125,8 @@ class GRenderWindow : public QWidget, public Core::Frontend::EmuWindow {
     Q_OBJECT
 
 public:
-    GRenderWindow(GMainWindow* parent, EmuThread* emu_thread);
+    explicit GRenderWindow(GMainWindow* parent, EmuThread* emu_thread_,
+                           InputCommon::InputSubsystem* input_subsystem_);
     ~GRenderWindow() override;
 
     // EmuWindow implementation.
@@ -183,6 +188,7 @@ private:
     QStringList GetUnsupportedGLExtensions() const;
 
     EmuThread* emu_thread;
+    InputCommon::InputSubsystem* input_subsystem;
 
     // Main context that will be shared with all other contexts that are requested.
     // If this is used in a shared context setting, then this should not be used directly, but
diff --git a/src/yuzu/configuration/configure_debug_controller.cpp b/src/yuzu/configuration/configure_debug_controller.cpp
index 72885b4b8..0097c9a29 100644
--- a/src/yuzu/configuration/configure_debug_controller.cpp
+++ b/src/yuzu/configuration/configure_debug_controller.cpp
@@ -5,9 +5,10 @@
 #include "ui_configure_debug_controller.h"
 #include "yuzu/configuration/configure_debug_controller.h"
 
-ConfigureDebugController::ConfigureDebugController(QWidget* parent)
+ConfigureDebugController::ConfigureDebugController(QWidget* parent,
+                                                   InputCommon::InputSubsystem* input_subsystem)
     : QDialog(parent), ui(std::make_unique<Ui::ConfigureDebugController>()),
-      debug_controller(new ConfigureInputPlayer(this, 9, nullptr, true)) {
+      debug_controller(new ConfigureInputPlayer(this, 9, nullptr, input_subsystem, true)) {
     ui->setupUi(this);
 
     ui->controllerLayout->addWidget(debug_controller);
diff --git a/src/yuzu/configuration/configure_debug_controller.h b/src/yuzu/configuration/configure_debug_controller.h
index 36475bbea..34dcf705f 100644
--- a/src/yuzu/configuration/configure_debug_controller.h
+++ b/src/yuzu/configuration/configure_debug_controller.h
@@ -10,6 +10,10 @@
 
 class QPushButton;
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 namespace Ui {
 class ConfigureDebugController;
 }
@@ -18,7 +22,8 @@ class ConfigureDebugController : public QDialog {
     Q_OBJECT
 
 public:
-    explicit ConfigureDebugController(QWidget* parent);
+    explicit ConfigureDebugController(QWidget* parent,
+                                      InputCommon::InputSubsystem* input_subsystem);
     ~ConfigureDebugController() override;
 
     void ApplyConfiguration();
diff --git a/src/yuzu/configuration/configure_dialog.cpp b/src/yuzu/configuration/configure_dialog.cpp
index 857577591..8186929a6 100644
--- a/src/yuzu/configuration/configure_dialog.cpp
+++ b/src/yuzu/configuration/configure_dialog.cpp
@@ -12,7 +12,8 @@
 #include "yuzu/configuration/configure_input_player.h"
 #include "yuzu/hotkeys.h"
 
-ConfigureDialog::ConfigureDialog(QWidget* parent, HotkeyRegistry& registry)
+ConfigureDialog::ConfigureDialog(QWidget* parent, HotkeyRegistry& registry,
+                                 InputCommon::InputSubsystem* input_subsystem)
     : QDialog(parent), ui(new Ui::ConfigureDialog), registry(registry) {
     Settings::configuring_global = true;
 
@@ -20,6 +21,8 @@ ConfigureDialog::ConfigureDialog(QWidget* parent, HotkeyRegistry& registry)
     ui->hotkeysTab->Populate(registry);
     setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
 
+    ui->inputTab->Initialize(input_subsystem);
+
     SetConfiguration();
     PopulateSelectionList();
 
diff --git a/src/yuzu/configuration/configure_dialog.h b/src/yuzu/configuration/configure_dialog.h
index 4289bc225..570c3b941 100644
--- a/src/yuzu/configuration/configure_dialog.h
+++ b/src/yuzu/configuration/configure_dialog.h
@@ -9,6 +9,10 @@
 
 class HotkeyRegistry;
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 namespace Ui {
 class ConfigureDialog;
 }
@@ -17,7 +21,8 @@ class ConfigureDialog : public QDialog {
     Q_OBJECT
 
 public:
-    explicit ConfigureDialog(QWidget* parent, HotkeyRegistry& registry);
+    explicit ConfigureDialog(QWidget* parent, HotkeyRegistry& registry,
+                             InputCommon::InputSubsystem* input_subsystem);
     ~ConfigureDialog() override;
 
     void ApplyConfiguration();
diff --git a/src/yuzu/configuration/configure_input.cpp b/src/yuzu/configuration/configure_input.cpp
index 0d004c2f7..5223eed1d 100644
--- a/src/yuzu/configuration/configure_input.cpp
+++ b/src/yuzu/configuration/configure_input.cpp
@@ -65,16 +65,20 @@ void OnDockedModeChanged(bool last_state, bool new_state) {
 ConfigureInput::ConfigureInput(QWidget* parent)
     : QWidget(parent), ui(std::make_unique<Ui::ConfigureInput>()) {
     ui->setupUi(this);
+}
+
+ConfigureInput::~ConfigureInput() = default;
 
+void ConfigureInput::Initialize(InputCommon::InputSubsystem* input_subsystem) {
     player_controllers = {
-        new ConfigureInputPlayer(this, 0, ui->consoleInputSettings),
-        new ConfigureInputPlayer(this, 1, ui->consoleInputSettings),
-        new ConfigureInputPlayer(this, 2, ui->consoleInputSettings),
-        new ConfigureInputPlayer(this, 3, ui->consoleInputSettings),
-        new ConfigureInputPlayer(this, 4, ui->consoleInputSettings),
-        new ConfigureInputPlayer(this, 5, ui->consoleInputSettings),
-        new ConfigureInputPlayer(this, 6, ui->consoleInputSettings),
-        new ConfigureInputPlayer(this, 7, ui->consoleInputSettings),
+        new ConfigureInputPlayer(this, 0, ui->consoleInputSettings, input_subsystem),
+        new ConfigureInputPlayer(this, 1, ui->consoleInputSettings, input_subsystem),
+        new ConfigureInputPlayer(this, 2, ui->consoleInputSettings, input_subsystem),
+        new ConfigureInputPlayer(this, 3, ui->consoleInputSettings, input_subsystem),
+        new ConfigureInputPlayer(this, 4, ui->consoleInputSettings, input_subsystem),
+        new ConfigureInputPlayer(this, 5, ui->consoleInputSettings, input_subsystem),
+        new ConfigureInputPlayer(this, 6, ui->consoleInputSettings, input_subsystem),
+        new ConfigureInputPlayer(this, 7, ui->consoleInputSettings, input_subsystem),
     };
 
     player_tabs = {
@@ -115,10 +119,12 @@ ConfigureInput::ConfigureInput(QWidget* parent)
     advanced = new ConfigureInputAdvanced(this);
     ui->tabAdvanced->setLayout(new QHBoxLayout(ui->tabAdvanced));
     ui->tabAdvanced->layout()->addWidget(advanced);
-    connect(advanced, &ConfigureInputAdvanced::CallDebugControllerDialog,
-            [this] { CallConfigureDialog<ConfigureDebugController>(*this); });
-    connect(advanced, &ConfigureInputAdvanced::CallMouseConfigDialog,
-            [this] { CallConfigureDialog<ConfigureMouseAdvanced>(*this); });
+    connect(advanced, &ConfigureInputAdvanced::CallDebugControllerDialog, [this, input_subsystem] {
+        CallConfigureDialog<ConfigureDebugController>(*this, input_subsystem);
+    });
+    connect(advanced, &ConfigureInputAdvanced::CallMouseConfigDialog, [this, input_subsystem] {
+        CallConfigureDialog<ConfigureMouseAdvanced>(*this, input_subsystem);
+    });
     connect(advanced, &ConfigureInputAdvanced::CallTouchscreenConfigDialog,
             [this] { CallConfigureDialog<ConfigureTouchscreenAdvanced>(*this); });
 
@@ -129,8 +135,6 @@ ConfigureInput::ConfigureInput(QWidget* parent)
     LoadConfiguration();
 }
 
-ConfigureInput::~ConfigureInput() = default;
-
 QList<QWidget*> ConfigureInput::GetSubTabs() const {
     return {
         ui->tabPlayer1, ui->tabPlayer2, ui->tabPlayer3, ui->tabPlayer4,  ui->tabPlayer5,
diff --git a/src/yuzu/configuration/configure_input.h b/src/yuzu/configuration/configure_input.h
index 78ca659da..d08a24f96 100644
--- a/src/yuzu/configuration/configure_input.h
+++ b/src/yuzu/configuration/configure_input.h
@@ -7,8 +7,8 @@
 #include <array>
 #include <memory>
 
-#include <QDialog>
 #include <QKeyEvent>
+#include <QWidget>
 
 #include "yuzu/configuration/configure_input_advanced.h"
 #include "yuzu/configuration/configure_input_player.h"
@@ -19,6 +19,10 @@ class QCheckBox;
 class QString;
 class QTimer;
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 namespace Ui {
 class ConfigureInput;
 }
@@ -32,6 +36,9 @@ public:
     explicit ConfigureInput(QWidget* parent = nullptr);
     ~ConfigureInput() override;
 
+    /// Initializes the input dialog with the given input subsystem.
+    void Initialize(InputCommon::InputSubsystem* input_subsystem_);
+
     /// Save all button configurations to settings file.
     void ApplyConfiguration();
 
diff --git a/src/yuzu/configuration/configure_input_player.cpp b/src/yuzu/configuration/configure_input_player.cpp
index d3980eb49..80bf40acb 100644
--- a/src/yuzu/configuration/configure_input_player.cpp
+++ b/src/yuzu/configuration/configure_input_player.cpp
@@ -11,12 +11,12 @@
 #include <QMenu>
 #include <QMessageBox>
 #include <QTimer>
-#include "common/assert.h"
 #include "common/param_package.h"
 #include "core/core.h"
 #include "core/hle/service/hid/controllers/npad.h"
 #include "core/hle/service/hid/hid.h"
 #include "core/hle/service/sm/sm.h"
+#include "input_common/gcadapter/gc_poller.h"
 #include "input_common/main.h"
 #include "ui_configure_input_player.h"
 #include "yuzu/configuration/config.h"
@@ -229,9 +229,11 @@ QString AnalogToText(const Common::ParamPackage& param, const std::string& dir)
 } // namespace
 
 ConfigureInputPlayer::ConfigureInputPlayer(QWidget* parent, std::size_t player_index,
-                                           QWidget* bottom_row, bool debug)
+                                           QWidget* bottom_row,
+                                           InputCommon::InputSubsystem* input_subsystem_,
+                                           bool debug)
     : QWidget(parent), ui(std::make_unique<Ui::ConfigureInputPlayer>()), player_index(player_index),
-      debug(debug), timeout_timer(std::make_unique<QTimer>()),
+      debug(debug), input_subsystem{input_subsystem_}, timeout_timer(std::make_unique<QTimer>()),
       poll_timer(std::make_unique<QTimer>()), bottom_row(bottom_row) {
     ui->setupUi(this);
 
@@ -287,7 +289,7 @@ ConfigureInputPlayer::ConfigureInputPlayer(QWidget* parent, std::size_t player_i
                         params.Set("direction", "+");
                         params.Set("threshold", "0.5");
                     }
-                    (*param) = std::move(params);
+                    *param = std::move(params);
                 },
                 InputCommon::Polling::DeviceType::Button);
         });
@@ -401,15 +403,15 @@ ConfigureInputPlayer::ConfigureInputPlayer(QWidget* parent, std::size_t player_i
 
     connect(poll_timer.get(), &QTimer::timeout, [this] {
         Common::ParamPackage params;
-        if (InputCommon::GetGCButtons()->IsPolling()) {
-            params = InputCommon::GetGCButtons()->GetNextInput();
+        if (input_subsystem->GetGCButtons()->IsPolling()) {
+            params = input_subsystem->GetGCButtons()->GetNextInput();
             if (params.Has("engine")) {
                 SetPollingResult(params, false);
                 return;
             }
         }
-        if (InputCommon::GetGCAnalogs()->IsPolling()) {
-            params = InputCommon::GetGCAnalogs()->GetNextInput();
+        if (input_subsystem->GetGCAnalogs()->IsPolling()) {
+            params = input_subsystem->GetGCAnalogs()->GetNextInput();
             if (params.Has("engine")) {
                 SetPollingResult(params, false);
                 return;
@@ -514,7 +516,7 @@ void ConfigureInputPlayer::LoadConfiguration() {
 }
 
 void ConfigureInputPlayer::UpdateInputDevices() {
-    input_devices = InputCommon::GetInputDevices();
+    input_devices = input_subsystem->GetInputDevices();
     ui->comboDevices->clear();
     for (auto device : input_devices) {
         ui->comboDevices->addItem(QString::fromStdString(device.Get("display", "Unknown")), {});
@@ -642,8 +644,8 @@ void ConfigureInputPlayer::UpdateMappingWithDefaults() {
         return;
     }
     const auto& device = input_devices[ui->comboDevices->currentIndex()];
-    auto button_mapping = InputCommon::GetButtonMappingForDevice(device);
-    auto analog_mapping = InputCommon::GetAnalogMappingForDevice(device);
+    auto button_mapping = input_subsystem->GetButtonMappingForDevice(device);
+    auto analog_mapping = input_subsystem->GetAnalogMappingForDevice(device);
     for (int i = 0; i < buttons_param.size(); ++i) {
         buttons_param[i] = button_mapping[static_cast<Settings::NativeButton::Values>(i)];
     }
@@ -666,7 +668,7 @@ void ConfigureInputPlayer::HandleClick(
 
     input_setter = new_input_setter;
 
-    device_pollers = InputCommon::Polling::GetPollers(type);
+    device_pollers = input_subsystem->GetPollers(type);
 
     for (auto& poller : device_pollers) {
         poller->Start();
@@ -676,9 +678,9 @@ void ConfigureInputPlayer::HandleClick(
     QWidget::grabKeyboard();
 
     if (type == InputCommon::Polling::DeviceType::Button) {
-        InputCommon::GetGCButtons()->BeginConfiguration();
+        input_subsystem->GetGCButtons()->BeginConfiguration();
     } else {
-        InputCommon::GetGCAnalogs()->BeginConfiguration();
+        input_subsystem->GetGCAnalogs()->BeginConfiguration();
     }
 
     timeout_timer->start(2500); // Cancel after 2.5 seconds
@@ -695,8 +697,8 @@ void ConfigureInputPlayer::SetPollingResult(const Common::ParamPackage& params,
     QWidget::releaseMouse();
     QWidget::releaseKeyboard();
 
-    InputCommon::GetGCButtons()->EndConfiguration();
-    InputCommon::GetGCAnalogs()->EndConfiguration();
+    input_subsystem->GetGCButtons()->EndConfiguration();
+    input_subsystem->GetGCAnalogs()->EndConfiguration();
 
     if (!abort) {
         (*input_setter)(params);
diff --git a/src/yuzu/configuration/configure_input_player.h b/src/yuzu/configuration/configure_input_player.h
index 25d4cde5e..a25bc3bd9 100644
--- a/src/yuzu/configuration/configure_input_player.h
+++ b/src/yuzu/configuration/configure_input_player.h
@@ -10,12 +10,11 @@
 #include <optional>
 #include <string>
 
-#include <QDialog>
+#include <QWidget>
 
 #include "common/param_package.h"
 #include "core/settings.h"
 #include "ui_configure_input.h"
-#include "yuzu/uisettings.h"
 
 class QCheckBox;
 class QKeyEvent;
@@ -27,6 +26,10 @@ class QString;
 class QTimer;
 class QWidget;
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 namespace InputCommon::Polling {
 class DevicePoller;
 enum class DeviceType;
@@ -41,6 +44,7 @@ class ConfigureInputPlayer : public QWidget {
 
 public:
     explicit ConfigureInputPlayer(QWidget* parent, std::size_t player_index, QWidget* bottom_row,
+                                  InputCommon::InputSubsystem* input_subsystem_,
                                   bool debug = false);
     ~ConfigureInputPlayer() override;
 
@@ -111,6 +115,8 @@ private:
     std::size_t player_index;
     bool debug;
 
+    InputCommon::InputSubsystem* input_subsystem;
+
     std::unique_ptr<QTimer> timeout_timer;
     std::unique_ptr<QTimer> poll_timer;
 
diff --git a/src/yuzu/configuration/configure_mouse_advanced.cpp b/src/yuzu/configuration/configure_mouse_advanced.cpp
index dcda8ab14..2af3afda8 100644
--- a/src/yuzu/configuration/configure_mouse_advanced.cpp
+++ b/src/yuzu/configuration/configure_mouse_advanced.cpp
@@ -76,8 +76,10 @@ static QString ButtonToText(const Common::ParamPackage& param) {
     return QObject::tr("[unknown]");
 }
 
-ConfigureMouseAdvanced::ConfigureMouseAdvanced(QWidget* parent)
-    : QDialog(parent), ui(std::make_unique<Ui::ConfigureMouseAdvanced>()),
+ConfigureMouseAdvanced::ConfigureMouseAdvanced(QWidget* parent,
+                                               InputCommon::InputSubsystem* input_subsystem_)
+    : QDialog(parent),
+      ui(std::make_unique<Ui::ConfigureMouseAdvanced>()), input_subsystem{input_subsystem_},
       timeout_timer(std::make_unique<QTimer>()), poll_timer(std::make_unique<QTimer>()) {
     ui->setupUi(this);
     setFocusPolicy(Qt::ClickFocus);
@@ -209,7 +211,7 @@ void ConfigureMouseAdvanced::HandleClick(
 
     input_setter = new_input_setter;
 
-    device_pollers = InputCommon::Polling::GetPollers(type);
+    device_pollers = input_subsystem->GetPollers(type);
 
     for (auto& poller : device_pollers) {
         poller->Start();
diff --git a/src/yuzu/configuration/configure_mouse_advanced.h b/src/yuzu/configuration/configure_mouse_advanced.h
index e7d27dab7..65b6fca9a 100644
--- a/src/yuzu/configuration/configure_mouse_advanced.h
+++ b/src/yuzu/configuration/configure_mouse_advanced.h
@@ -8,12 +8,14 @@
 #include <optional>
 #include <QDialog>
 
-#include "core/settings.h"
-
 class QCheckBox;
 class QPushButton;
 class QTimer;
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 namespace Ui {
 class ConfigureMouseAdvanced;
 }
@@ -22,7 +24,7 @@ class ConfigureMouseAdvanced : public QDialog {
     Q_OBJECT
 
 public:
-    explicit ConfigureMouseAdvanced(QWidget* parent);
+    explicit ConfigureMouseAdvanced(QWidget* parent, InputCommon::InputSubsystem* input_subsystem_);
     ~ConfigureMouseAdvanced() override;
 
     void ApplyConfiguration();
@@ -57,6 +59,8 @@ private:
 
     std::unique_ptr<Ui::ConfigureMouseAdvanced> ui;
 
+    InputCommon::InputSubsystem* input_subsystem;
+
     /// This will be the the setting function when an input is awaiting configuration.
     std::optional<std::function<void(const Common::ParamPackage&)>> input_setter;
 
diff --git a/src/yuzu/main.cpp b/src/yuzu/main.cpp
index cd7e78eb4..cab9d680a 100644
--- a/src/yuzu/main.cpp
+++ b/src/yuzu/main.cpp
@@ -94,6 +94,7 @@ static FileSys::VirtualFile VfsDirectoryCreateFileWrapper(const FileSys::Virtual
 #include "core/perf_stats.h"
 #include "core/settings.h"
 #include "core/telemetry_session.h"
+#include "input_common/main.h"
 #include "video_core/gpu.h"
 #include "video_core/shader_notify.h"
 #include "yuzu/about_dialog.h"
@@ -186,9 +187,9 @@ static void InitializeLogging() {
 }
 
 GMainWindow::GMainWindow()
-    : config(new Config()), emu_thread(nullptr),
-      vfs(std::make_shared<FileSys::RealVfsFilesystem>()),
-      provider(std::make_unique<FileSys::ManualContentProvider>()) {
+    : input_subsystem{std::make_unique<InputCommon::InputSubsystem>()},
+      config{std::make_unique<Config>()}, vfs{std::make_shared<FileSys::RealVfsFilesystem>()},
+      provider{std::make_unique<FileSys::ManualContentProvider>()} {
     InitializeLogging();
 
     LoadTranslation();
@@ -473,7 +474,7 @@ void GMainWindow::InitializeWidgets() {
 #ifdef YUZU_ENABLE_COMPATIBILITY_REPORTING
     ui.action_Report_Compatibility->setVisible(true);
 #endif
-    render_window = new GRenderWindow(this, emu_thread.get());
+    render_window = new GRenderWindow(this, emu_thread.get(), input_subsystem.get());
     render_window->hide();
 
     game_list = new GameList(vfs, provider.get(), this);
@@ -2213,7 +2214,7 @@ void GMainWindow::OnConfigure() {
     const auto old_theme = UISettings::values.theme;
     const bool old_discord_presence = UISettings::values.enable_discord_presence;
 
-    ConfigureDialog configure_dialog(this, hotkey_registry);
+    ConfigureDialog configure_dialog(this, hotkey_registry, input_subsystem.get());
     connect(&configure_dialog, &ConfigureDialog::LanguageChanged, this,
             &GMainWindow::OnLanguageChanged);
 
diff --git a/src/yuzu/main.h b/src/yuzu/main.h
index 01f9131e5..957f20fa8 100644
--- a/src/yuzu/main.h
+++ b/src/yuzu/main.h
@@ -40,12 +40,20 @@ namespace Core::Frontend {
 struct SoftwareKeyboardParameters;
 } // namespace Core::Frontend
 
+namespace DiscordRPC {
+class DiscordInterface;
+}
+
 namespace FileSys {
 class ContentProvider;
 class ManualContentProvider;
 class VfsFilesystem;
 } // namespace FileSys
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 enum class EmulatedDirectoryTarget {
     NAND,
     SDMC,
@@ -62,10 +70,6 @@ enum class ReinitializeKeyBehavior {
     Warning,
 };
 
-namespace DiscordRPC {
-class DiscordInterface;
-}
-
 class GMainWindow : public QMainWindow {
     Q_OBJECT
 
@@ -86,8 +90,6 @@ public:
     GMainWindow();
     ~GMainWindow() override;
 
-    std::unique_ptr<DiscordRPC::DiscordInterface> discord_rpc;
-
     bool DropAction(QDropEvent* event);
     void AcceptDropEvent(QDropEvent* event);
 
@@ -255,6 +257,9 @@ private:
 
     Ui::MainWindow ui;
 
+    std::unique_ptr<DiscordRPC::DiscordInterface> discord_rpc;
+    std::unique_ptr<InputCommon::InputSubsystem> input_subsystem;
+
     GRenderWindow* render_window;
     GameList* game_list;
     LoadingScreen* loading_screen;
diff --git a/src/yuzu_cmd/emu_window/emu_window_sdl2.cpp b/src/yuzu_cmd/emu_window/emu_window_sdl2.cpp
index e5e684206..a804d5185 100644
--- a/src/yuzu_cmd/emu_window/emu_window_sdl2.cpp
+++ b/src/yuzu_cmd/emu_window/emu_window_sdl2.cpp
@@ -13,23 +13,25 @@
 #include "input_common/sdl/sdl.h"
 #include "yuzu_cmd/emu_window/emu_window_sdl2.h"
 
-EmuWindow_SDL2::EmuWindow_SDL2(Core::System& system, bool fullscreen) : system{system} {
+EmuWindow_SDL2::EmuWindow_SDL2(Core::System& system, bool fullscreen,
+                               InputCommon::InputSubsystem* input_subsystem_)
+    : system{system}, input_subsystem{input_subsystem_} {
     if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) {
         LOG_CRITICAL(Frontend, "Failed to initialize SDL2! Exiting...");
         exit(1);
     }
-    InputCommon::Init();
+    input_subsystem->Initialize();
     SDL_SetMainReady();
 }
 
 EmuWindow_SDL2::~EmuWindow_SDL2() {
-    InputCommon::Shutdown();
+    input_subsystem->Shutdown();
     SDL_Quit();
 }
 
 void EmuWindow_SDL2::OnMouseMotion(s32 x, s32 y) {
     TouchMoved((unsigned)std::max(x, 0), (unsigned)std::max(y, 0));
-    InputCommon::GetMotionEmu()->Tilt(x, y);
+    input_subsystem->GetMotionEmu()->Tilt(x, y);
 }
 
 void EmuWindow_SDL2::OnMouseButton(u32 button, u8 state, s32 x, s32 y) {
@@ -41,9 +43,9 @@ void EmuWindow_SDL2::OnMouseButton(u32 button, u8 state, s32 x, s32 y) {
         }
     } else if (button == SDL_BUTTON_RIGHT) {
         if (state == SDL_PRESSED) {
-            InputCommon::GetMotionEmu()->BeginTilt(x, y);
+            input_subsystem->GetMotionEmu()->BeginTilt(x, y);
         } else {
-            InputCommon::GetMotionEmu()->EndTilt();
+            input_subsystem->GetMotionEmu()->EndTilt();
         }
     }
 }
@@ -79,9 +81,9 @@ void EmuWindow_SDL2::OnFingerUp() {
 
 void EmuWindow_SDL2::OnKeyEvent(int key, u8 state) {
     if (state == SDL_PRESSED) {
-        InputCommon::GetKeyboard()->PressKey(key);
+        input_subsystem->GetKeyboard()->PressKey(key);
     } else if (state == SDL_RELEASED) {
-        InputCommon::GetKeyboard()->ReleaseKey(key);
+        input_subsystem->GetKeyboard()->ReleaseKey(key);
     }
 }
 
diff --git a/src/yuzu_cmd/emu_window/emu_window_sdl2.h b/src/yuzu_cmd/emu_window/emu_window_sdl2.h
index fffac4252..82750ffec 100644
--- a/src/yuzu_cmd/emu_window/emu_window_sdl2.h
+++ b/src/yuzu_cmd/emu_window/emu_window_sdl2.h
@@ -14,9 +14,14 @@ namespace Core {
 class System;
 }
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 class EmuWindow_SDL2 : public Core::Frontend::EmuWindow {
 public:
-    explicit EmuWindow_SDL2(Core::System& system, bool fullscreen);
+    explicit EmuWindow_SDL2(Core::System& system, bool fullscreen,
+                            InputCommon::InputSubsystem* input_subsystem);
     ~EmuWindow_SDL2();
 
     /// Polls window events
@@ -76,4 +81,7 @@ protected:
 
     /// Keeps track of how often to update the title bar during gameplay
     u32 last_time = 0;
+
+    /// Input subsystem to use with this window.
+    InputCommon::InputSubsystem* input_subsystem;
 };
diff --git a/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.cpp b/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.cpp
index e78025737..881b67a76 100644
--- a/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.cpp
+++ b/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.cpp
@@ -87,8 +87,9 @@ bool EmuWindow_SDL2_GL::SupportsRequiredGLExtensions() {
     return unsupported_ext.empty();
 }
 
-EmuWindow_SDL2_GL::EmuWindow_SDL2_GL(Core::System& system, bool fullscreen)
-    : EmuWindow_SDL2{system, fullscreen} {
+EmuWindow_SDL2_GL::EmuWindow_SDL2_GL(Core::System& system, bool fullscreen,
+                                     InputCommon::InputSubsystem* input_subsystem)
+    : EmuWindow_SDL2{system, fullscreen, input_subsystem} {
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY);
diff --git a/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.h b/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.h
index 48bb41683..732a64edd 100644
--- a/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.h
+++ b/src/yuzu_cmd/emu_window/emu_window_sdl2_gl.h
@@ -8,9 +8,14 @@
 #include "core/frontend/emu_window.h"
 #include "yuzu_cmd/emu_window/emu_window_sdl2.h"
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 class EmuWindow_SDL2_GL final : public EmuWindow_SDL2 {
 public:
-    explicit EmuWindow_SDL2_GL(Core::System& system, bool fullscreen);
+    explicit EmuWindow_SDL2_GL(Core::System& system, bool fullscreen,
+                               InputCommon::InputSubsystem* input_subsystem);
     ~EmuWindow_SDL2_GL();
 
     void Present() override;
diff --git a/src/yuzu_cmd/emu_window/emu_window_sdl2_vk.cpp b/src/yuzu_cmd/emu_window/emu_window_sdl2_vk.cpp
index cb8e68a39..53491f86e 100644
--- a/src/yuzu_cmd/emu_window/emu_window_sdl2_vk.cpp
+++ b/src/yuzu_cmd/emu_window/emu_window_sdl2_vk.cpp
@@ -19,8 +19,9 @@
 #include <SDL.h>
 #include <SDL_syswm.h>
 
-EmuWindow_SDL2_VK::EmuWindow_SDL2_VK(Core::System& system, bool fullscreen)
-    : EmuWindow_SDL2{system, fullscreen} {
+EmuWindow_SDL2_VK::EmuWindow_SDL2_VK(Core::System& system, bool fullscreen,
+                                     InputCommon::InputSubsystem* input_subsystem)
+    : EmuWindow_SDL2{system, fullscreen, input_subsystem} {
     const std::string window_title = fmt::format("yuzu {} | {}-{} (Vulkan)", Common::g_build_name,
                                                  Common::g_scm_branch, Common::g_scm_desc);
     render_window =
diff --git a/src/yuzu_cmd/emu_window/emu_window_sdl2_vk.h b/src/yuzu_cmd/emu_window/emu_window_sdl2_vk.h
index 77a6ca72b..f99704d4c 100644
--- a/src/yuzu_cmd/emu_window/emu_window_sdl2_vk.h
+++ b/src/yuzu_cmd/emu_window/emu_window_sdl2_vk.h
@@ -13,9 +13,14 @@ namespace Core {
 class System;
 }
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 class EmuWindow_SDL2_VK final : public EmuWindow_SDL2 {
 public:
-    explicit EmuWindow_SDL2_VK(Core::System& system, bool fullscreen);
+    explicit EmuWindow_SDL2_VK(Core::System& system, bool fullscreen,
+                               InputCommon::InputSubsystem* input_subsystem);
     ~EmuWindow_SDL2_VK();
 
     void Present() override;
diff --git a/src/yuzu_cmd/yuzu.cpp b/src/yuzu_cmd/yuzu.cpp
index 8efe49390..4f00c804d 100644
--- a/src/yuzu_cmd/yuzu.cpp
+++ b/src/yuzu_cmd/yuzu.cpp
@@ -23,12 +23,14 @@
 #include "common/telemetry.h"
 #include "core/core.h"
 #include "core/crypto/key_manager.h"
+#include "core/file_sys/registered_cache.h"
 #include "core/file_sys/vfs_real.h"
 #include "core/gdbstub/gdbstub.h"
 #include "core/hle/service/filesystem/filesystem.h"
 #include "core/loader/loader.h"
 #include "core/settings.h"
 #include "core/telemetry_session.h"
+#include "input_common/main.h"
 #include "video_core/renderer_base.h"
 #include "yuzu_cmd/config.h"
 #include "yuzu_cmd/emu_window/emu_window_sdl2.h"
@@ -37,8 +39,6 @@
 #include "yuzu_cmd/emu_window/emu_window_sdl2_vk.h"
 #endif
 
-#include "core/file_sys/registered_cache.h"
-
 #ifdef _WIN32
 // windows.h needs to be included before shellapi.h
 #include <windows.h>
@@ -179,15 +179,16 @@ int main(int argc, char** argv) {
     Settings::Apply();
 
     Core::System& system{Core::System::GetInstance()};
+    InputCommon::InputSubsystem input_subsystem;
 
     std::unique_ptr<EmuWindow_SDL2> emu_window;
     switch (Settings::values.renderer_backend.GetValue()) {
     case Settings::RendererBackend::OpenGL:
-        emu_window = std::make_unique<EmuWindow_SDL2_GL>(system, fullscreen);
+        emu_window = std::make_unique<EmuWindow_SDL2_GL>(system, fullscreen, &input_subsystem);
         break;
     case Settings::RendererBackend::Vulkan:
 #ifdef HAS_VULKAN
-        emu_window = std::make_unique<EmuWindow_SDL2_VK>(system, fullscreen);
+        emu_window = std::make_unique<EmuWindow_SDL2_VK>(system, fullscreen, &input_subsystem);
         break;
 #else
         LOG_CRITICAL(Frontend, "Vulkan backend has not been compiled!");
diff --git a/src/yuzu_tester/emu_window/emu_window_sdl2_hide.cpp b/src/yuzu_tester/emu_window/emu_window_sdl2_hide.cpp
index 8584f6671..78f75fb38 100644
--- a/src/yuzu_tester/emu_window/emu_window_sdl2_hide.cpp
+++ b/src/yuzu_tester/emu_window/emu_window_sdl2_hide.cpp
@@ -13,7 +13,6 @@
 
 #include <glad/glad.h>
 
-#include "common/assert.h"
 #include "common/logging/log.h"
 #include "common/scm_rev.h"
 #include "core/settings.h"
@@ -53,7 +52,7 @@ EmuWindow_SDL2_Hide::EmuWindow_SDL2_Hide() {
         exit(1);
     }
 
-    InputCommon::Init();
+    input_subsystem->Initialize();
 
     SDL_SetMainReady();
 
@@ -105,7 +104,7 @@ EmuWindow_SDL2_Hide::EmuWindow_SDL2_Hide() {
 }
 
 EmuWindow_SDL2_Hide::~EmuWindow_SDL2_Hide() {
-    InputCommon::Shutdown();
+    input_subsystem->Shutdown();
     SDL_GL_DeleteContext(gl_context);
     SDL_Quit();
 }
diff --git a/src/yuzu_tester/emu_window/emu_window_sdl2_hide.h b/src/yuzu_tester/emu_window/emu_window_sdl2_hide.h
index c13a82df2..a553b4b95 100644
--- a/src/yuzu_tester/emu_window/emu_window_sdl2_hide.h
+++ b/src/yuzu_tester/emu_window/emu_window_sdl2_hide.h
@@ -8,6 +8,10 @@
 
 struct SDL_Window;
 
+namespace InputCommon {
+class InputSubsystem;
+}
+
 class EmuWindow_SDL2_Hide : public Core::Frontend::EmuWindow {
 public:
     explicit EmuWindow_SDL2_Hide();
@@ -25,6 +29,8 @@ private:
     /// Whether the GPU and driver supports the OpenGL extension required
     bool SupportsRequiredGLExtensions();
 
+    std::unique_ptr<InputCommon::InputSubsystem> input_subsystem;
+
     /// Internal SDL2 render window
     SDL_Window* render_window;