3 files changed, 28 insertions, 5 deletions
diff --git a/src/core/hle/service/hid/controllers/npad.cpp b/src/core/hle/service/hid/controllers/npad.cpp
index b65d59373..620386cd1 100644
--- a/src/core/hle/service/hid/controllers/npad.cpp
+++ b/src/core/hle/service/hid/controllers/npad.cpp
@@ -593,6 +593,14 @@ Controller_NPad::NpadHoldType Controller_NPad::GetHoldType() const {
     return hold_type;
 }
 
+void Controller_NPad::SetNpadHandheldActivationMode(NpadHandheldActivationMode activation_mode) {
+    handheld_activation_mode = activation_mode;
+}
+
+Controller_NPad::NpadHandheldActivationMode Controller_NPad::GetNpadHandheldActivationMode() const {
+    return handheld_activation_mode;
+}
+
 void Controller_NPad::SetNpadMode(u32 npad_id, NPadAssignments assignment_mode) {
     const std::size_t npad_index = NPadIdToIndex(npad_id);
     ASSERT(npad_index < shared_memory_entries.size());
diff --git a/src/core/hle/service/hid/controllers/npad.h b/src/core/hle/service/hid/controllers/npad.h
index 78e7c320b..654d97c3f 100644
--- a/src/core/hle/service/hid/controllers/npad.h
+++ b/src/core/hle/service/hid/controllers/npad.h
@@ -74,6 +74,12 @@ public:
         Single = 1,
     };
 
+    enum class NpadHandheldActivationMode : u64 {
+        Dual = 0,
+        Single = 1,
+        None = 2,
+    };
+
     enum class NPadControllerType {
         None,
         ProController,
@@ -110,6 +116,9 @@ public:
     void SetHoldType(NpadHoldType joy_hold_type);
     NpadHoldType GetHoldType() const;
 
+    void SetNpadHandheldActivationMode(NpadHandheldActivationMode activation_mode);
+    NpadHandheldActivationMode GetNpadHandheldActivationMode() const;
+
     void SetNpadMode(u32 npad_id, NPadAssignments assignment_mode);
 
     void VibrateController(const std::vector<u32>& controller_ids,
@@ -369,6 +378,7 @@ private:
     MotionArray motions;
     std::vector<u32> supported_npad_id_types{};
     NpadHoldType hold_type{NpadHoldType::Vertical};
+    NpadHandheldActivationMode handheld_activation_mode{NpadHandheldActivationMode::Dual};
     // Each controller should have their own styleset changed event
     std::array<Kernel::EventPair, 10> styleset_changed_events;
     Vibration last_processed_vibration{};
diff --git a/src/core/hle/service/hid/hid.cpp b/src/core/hle/service/hid/hid.cpp
index 1d96f705f..395e83b3f 100644
--- a/src/core/hle/service/hid/hid.cpp
+++ b/src/core/hle/service/hid/hid.cpp
@@ -739,8 +739,11 @@ void Hid::SetNpadHandheldActivationMode(Kernel::HLERequestContext& ctx) {
     const auto applet_resource_user_id{rp.Pop<u64>()};
     const auto mode{rp.Pop<u64>()};
 
-    LOG_WARNING(Service_HID, "(STUBBED) called, applet_resource_user_id={}, mode={}",
-                applet_resource_user_id, mode);
+    LOG_DEBUG(Service_HID, "called, applet_resource_user_id={}, mode={}", applet_resource_user_id,
+              mode);
+
+    applet_resource->GetController<Controller_NPad>(HidController::NPad)
+        .SetNpadHandheldActivationMode(Controller_NPad::NpadHandheldActivationMode{mode});
 
     IPC::ResponseBuilder rb{ctx, 2};
     rb.Push(RESULT_SUCCESS);
@@ -750,11 +753,13 @@ void Hid::GetNpadHandheldActivationMode(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
     const auto applet_resource_user_id{rp.Pop<u64>()};
 
-    LOG_WARNING(Service_HID, "(STUBBED) called, applet_resource_user_id={}",
-                applet_resource_user_id);
+    LOG_DEBUG(Service_HID, "called, applet_resource_user_id={}", applet_resource_user_id);
 
-    IPC::ResponseBuilder rb{ctx, 2};
+    IPC::ResponseBuilder rb{ctx, 4};
     rb.Push(RESULT_SUCCESS);
+    rb.Push<u64>(
+        static_cast<u64>(applet_resource->GetController<Controller_NPad>(HidController::NPad)
+                             .GetNpadHandheldActivationMode()));
 }
 
 void Hid::SwapNpadAssignment(Kernel::HLERequestContext& ctx) {