[core/hle/services/am] nuke ButtonPoller and Mouse thread (#4229)

Signed-off-by: lizzie <lizzie@eden-emu.dev>

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

doesn't even do anything now, please check if controller i/o is affected by this change
this should also fix latency issues with the mouse
the ButtonPoller thread isn't longer required since we update the state immediately with the .on_change callback registered

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4229
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

2 files changed, 10 insertions, 12 deletions

diff --git a/src/input_common/drivers/mouse.cpp b/src/input_common/drivers/mouse.cpp
index 7e029d2cdf..00b7220c1e 100644
--- a/src/input_common/drivers/mouse.cpp
+++ b/src/input_common/drivers/mouse.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@@ -72,15 +72,6 @@ Mouse::Mouse(std::string input_engine_) : InputEngine(std::move(input_engine_))
     wheel_position = {};
     last_mouse_change = {};
     last_motion_change = {};
-
-    update_thread = std::jthread([this](std::stop_token stop_token) {
-        Common::SetCurrentThreadName("Mouse");
-        while (!stop_token.stop_requested()) {
-            UpdateStickInput();
-            UpdateMotionInput();
-            std::this_thread::sleep_for(std::chrono::milliseconds(update_time));
-        }
-    });
 }
 
 void Mouse::UpdateStickInput() {
@@ -185,6 +176,11 @@ void Mouse::Move(int x, int y, int center_x, int center_y) {
     }
 }
 
+void Mouse::NotifyChanged() {
+    UpdateStickInput();
+    UpdateMotionInput();
+}
+
 void Mouse::MouseMove(f32 touch_x, f32 touch_y) {
     SetAxis(real_mouse_identifier, mouse_axis_x, touch_x);
     SetAxis(real_mouse_identifier, mouse_axis_y, touch_y);
diff --git a/src/input_common/drivers/mouse.h b/src/input_common/drivers/mouse.h
index 2e5e989067..166168c824 100644
--- a/src/input_common/drivers/mouse.h
+++ b/src/input_common/drivers/mouse.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@@ -93,6 +93,9 @@ public:
 
     void ReleaseAllButtons();
 
+    /// @brief Notifies we changed something about the mouse state and we must update
+    void NotifyChanged();
+
     std::vector<Common::ParamPackage> GetInputDevices() const override;
     AnalogMapping GetAnalogMappingForDevice(const Common::ParamPackage& params) override;
     Common::Input::ButtonNames GetUIName(const Common::ParamPackage& params) const override;
@@ -110,7 +113,6 @@ private:
     Common::Vec3<float> last_motion_change;
     Common::Vec2<int> wheel_position;
     bool button_pressed = false;
-    std::jthread update_thread;
 };
 
 } // namespace InputCommon