yuzu: create linux group in general settings

- Create files dedicated to starting and stopping gamemode functions
  - Use them in yuzu and yuzu_cmd modules

src/common/CMakeLists.txt

@@ -174,6 +174,15 @@ if(ANDROID)
     )
 endif()
 
+if (UNIX)
+  target_sources(common PRIVATE
+    linux/gamemode.cpp
+    linux/gamemode.h
+  )
+
+  target_link_libraries(common PRIVATE gamemode)
+endif()
+
 if(ARCHITECTURE_x86_64)
     target_sources(common
         PRIVATE

src/common/linux/gamemode.cpp

@@ -0,0 +1,39 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <gamemode_client.h>
+
+#include "common/linux/gamemode.h"
+#include "common/settings.h"
+
+namespace Common::Linux {
+
+void StartGamemode() {
+    if (Settings::values.enable_gamemode) {
+        if (gamemode_request_start() < 0) {
+            LOG_WARNING(Frontend, "Failed to start gamemode: {}", gamemode_error_string());
+        } else {
+            LOG_INFO(Frontend, "Started gamemode");
+        }
+    }
+}
+
+void StopGamemode() {
+    if (Settings::values.enable_gamemode) {
+        if (gamemode_request_end() < 0) {
+            LOG_WARNING(Frontend, "Failed to stop gamemode: {}", gamemode_error_string());
+        } else {
+            LOG_INFO(Frontend, "Stopped gamemode");
+        }
+    }
+}
+
+void SetGamemodeState(bool state) {
+    if (state) {
+        StartGamemode();
+    } else {
+        StopGamemode();
+    }
+}
+
+} // namespace Common::Linux

src/common/linux/gamemode.h

@@ -0,0 +1,24 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+namespace Common::Linux {
+
+/**
+ * Start the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ */
+void StartGamemode();
+
+/**
+ * Stop the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ */
+void StopGamemode();
+
+/**
+ * Start or stop the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ * @param state The new state the gamemode should have
+ */
+void SetGamemodeState(bool state);
+
+} // namespace Common::Linux

src/common/settings.cpp

@@ -219,6 +219,8 @@ const char* TranslateCategory(Category category) {
         return "Services";
     case Category::Paths:
         return "Paths";
+    case Category::Linux:
+        return "Linux";
     case Category::MaxEnum:
         break;
     }

src/common/settings.h

@@ -178,8 +178,6 @@ struct Values {
                                              true,
                                              &use_speed_limit};
 
-    Setting<bool> enable_gamemode{linkage, false, "enable_gamemode", Category::Core};
-
     // Cpu
     SwitchableSetting<CpuAccuracy, true> cpu_accuracy{linkage,           CpuAccuracy::Auto,
                                                       CpuAccuracy::Auto, CpuAccuracy::Paranoid,
@@ -429,6 +427,9 @@ struct Values {
                                                    true,
                                                    true};
 
+    // Linux
+    SwitchableSetting<bool> enable_gamemode{linkage, true, "enable_gamemode", Category::Linux};
+
     // Controls
     InputSetting<std::array<PlayerInput, 10>> players;
 

src/common/settings_common.h

@@ -41,6 +41,7 @@ enum class Category : u32 {
     Multiplayer,
     Services,
     Paths,
+    Linux,
     MaxEnum,
 };