diff --git a/src/core/frontend/input.h b/src/core/frontend/input.h
deleted file mode 100644
index f1747c5b2..000000000
--- a/src/core/frontend/input.h
+++ /dev/null
@@ -1,217 +0,0 @@
-// Copyright 2017 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <functional>
-#include <memory>
-#include <string>
-#include <tuple>
-#include <unordered_map>
-#include <utility>
-#include "common/logging/log.h"
-#include "common/param_package.h"
-#include "common/quaternion.h"
-#include "common/vector_math.h"
-
-namespace Input {
-
-enum class AnalogDirection : u8 {
- RIGHT,
- LEFT,
- UP,
- DOWN,
-};
-struct AnalogProperties {
- float deadzone;
- float range;
- float threshold;
-};
-template <typename StatusType>
-struct InputCallback {
- std::function<void(StatusType)> on_change;
-};
-
-/// An abstract class template for an input device (a button, an analog input, etc.).
-template <typename StatusType>
-class InputDevice {
-public:
- virtual ~InputDevice() = default;
- virtual StatusType GetStatus() const {
- return {};
- }
- virtual StatusType GetRawStatus() const {
- return GetStatus();
- }
- virtual AnalogProperties GetAnalogProperties() const {
- return {};
- }
- virtual bool GetAnalogDirectionStatus([[maybe_unused]] AnalogDirection direction) const {
- return {};
- }
- virtual bool SetRumblePlay([[maybe_unused]] f32 amp_low, [[maybe_unused]] f32 freq_low,
- [[maybe_unused]] f32 amp_high,
- [[maybe_unused]] f32 freq_high) const {
- return {};
- }
- void SetCallback(InputCallback<StatusType> callback_) {
- callback = std::move(callback_);
- }
- void TriggerOnChange() {
- if (callback.on_change) {
- callback.on_change(GetStatus());
- }
- }
-
-private:
- InputCallback<StatusType> callback;
-};
-
-/// An abstract class template for a factory that can create input devices.
-template <typename InputDeviceType>
-class Factory {
-public:
- virtual ~Factory() = default;
- virtual std::unique_ptr<InputDeviceType> Create(const Common::ParamPackage&) = 0;
-};
-
-namespace Impl {
-
-template <typename InputDeviceType>
-using FactoryListType = std::unordered_map<std::string, std::shared_ptr<Factory<InputDeviceType>>>;
-
-template <typename InputDeviceType>
-struct FactoryList {
- static FactoryListType<InputDeviceType> list;
-};
-
-template <typename InputDeviceType>
-FactoryListType<InputDeviceType> FactoryList<InputDeviceType>::list;
-
-} // namespace Impl
-
-/**
- * Registers an input device factory.
- * @tparam InputDeviceType the type of input devices the factory can create
- * @param name the name of the factory. Will be used to match the "engine" parameter when creating
- * a device
- * @param factory the factory object to register
- */
-template <typename InputDeviceType>
-void RegisterFactory(const std::string& name, std::shared_ptr<Factory<InputDeviceType>> factory) {
- auto pair = std::make_pair(name, std::move(factory));
- if (!Impl::FactoryList<InputDeviceType>::list.insert(std::move(pair)).second) {
- LOG_ERROR(Input, "Factory '{}' already registered", name);
- }
-}
-
-/**
- * Unregisters an input device factory.
- * @tparam InputDeviceType the type of input devices the factory can create
- * @param name the name of the factory to unregister
- */
-template <typename InputDeviceType>
-void UnregisterFactory(const std::string& name) {
- if (Impl::FactoryList<InputDeviceType>::list.erase(name) == 0) {
- LOG_ERROR(Input, "Factory '{}' not registered", name);
- }
-}
-
-/**
- * Create an input device from given paramters.
- * @tparam InputDeviceType the type of input devices to create
- * @param params a serialized ParamPackage string contains all parameters for creating the device
- */
-template <typename InputDeviceType>
-std::unique_ptr<InputDeviceType> CreateDevice(const std::string& params) {
- const Common::ParamPackage package(params);
- const std::string engine = package.Get("engine", "null");
- const auto& factory_list = Impl::FactoryList<InputDeviceType>::list;
- const auto pair = factory_list.find(engine);
- if (pair == factory_list.end()) {
- if (engine != "null") {
- LOG_ERROR(Input, "Unknown engine name: {}", engine);
- }
- return std::make_unique<InputDeviceType>();
- }
- return pair->second->Create(package);
-}
-
-/**
- * A button device is an input device that returns bool as status.
- * true for pressed; false for released.
- */
-using ButtonDevice = InputDevice<bool>;
-
-/**
- * An analog device is an input device that returns a tuple of x and y coordinates as status. The
- * coordinates are within the unit circle. x+ is defined as right direction, and y+ is defined as up
- * direction
- */
-using AnalogDevice = InputDevice<std::tuple<float, float>>;
-
-/**
- * A vibration device is an input device that returns an unsigned byte as status.
- * It represents whether the vibration device supports vibration or not.
- * If the status returns 1, it supports vibration. Otherwise, it does not support vibration.
- */
-using VibrationDevice = InputDevice<u8>;
-
-/**
- * A motion status is an object that returns a tuple of accelerometer state vector,
- * gyroscope state vector, rotation state vector, orientation state matrix and quaterion state
- * vector.
- *
- * For both 3D vectors:
- * x+ is the same direction as RIGHT on D-pad.
- * y+ is normal to the touch screen, pointing outward.
- * z+ is the same direction as UP on D-pad.
- *
- * For accelerometer state vector
- * Units: g (gravitational acceleration)
- *
- * For gyroscope state vector:
- * Orientation is determined by right-hand rule.
- * Units: deg/sec
- *
- * For rotation state vector
- * Units: rotations
- *
- * For orientation state matrix
- * x vector
- * y vector
- * z vector
- *
- * For quaternion state vector
- * xyz vector
- * w float
- */
-using MotionStatus = std::tuple<Common::Vec3<float>, Common::Vec3<float>, Common::Vec3<float>,
- std::array<Common::Vec3f, 3>, Common::Quaternion<f32>>;
-
-/**
- * A motion device is an input device that returns a motion status object
- */
-using MotionDevice = InputDevice<MotionStatus>;
-
-/**
- * A touch status is an object that returns an array of 16 tuple elements of two floats and a bool.
- * The floats are x and y coordinates in the range 0.0 - 1.0, and the bool indicates whether it is
- * pressed.
- */
-using TouchStatus = std::array<std::tuple<float, float, bool>, 16>;
-
-/**
- * A touch device is an input device that returns a touch status object
- */
-using TouchDevice = InputDevice<TouchStatus>;
-
-/**
- * A mouse device is an input device that returns a tuple of two floats and four ints.
- * The first two floats are X and Y device coordinates of the mouse (from 0-1).
- * The s32s are the mouse wheel.
- */
-using MouseDevice = InputDevice<std::tuple<float, float, s32, s32>>;
-
-} // namespace Input