Add IPsmSession

- Add `IPsmSession` by Thog
- Implement `OpenSession`

Ryujinx.HLE/HOS/Services/Psm/IPsmServer.cs

@@ -22,7 +22,8 @@ namespace Ryujinx.HLE.HOS.Services.Psm
             m_Commands = new Dictionary<int, ServiceProcessRequest>()
             {
                 { 0, GetBatteryChargePercentage },
-                { 1, GetChargerType             }
+                { 1, GetChargerType             },
+                { 7, OpenSession                }
             };
         }
 
@@ -47,5 +48,13 @@ namespace Ryujinx.HLE.HOS.Services.Psm
 
             return 0;
         }
+
+        // OpenSession() -> IPsmSession
+        public long OpenSession(ServiceCtx Context)
+        {
+            MakeObject(Context, new IPsmSession(Context.Device.System));
+
+            return 0;
+        }
     }
 }

Ryujinx.HLE/HOS/Services/Psm/IPsmSession.cs

@@ -0,0 +1,96 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Ipc;
+using Ryujinx.HLE.HOS.Kernel;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.Psm
+{
+    class IPsmSession : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        private KEvent StateChangeEvent;
+        private int    StateChangeEventHandle;
+
+        public IPsmSession(Horizon System)
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 0, BindStateChangeEvent                     },
+                { 1, UnbindStateChangeEvent                   },
+                { 2, SetChargerTypeChangeEventEnabled         },
+                { 3, SetPowerSupplyChangeEventEnabled         },
+                { 4, SetBatteryVoltageStateChangeEventEnabled }
+            };
+
+            StateChangeEvent       = new KEvent(System);
+            StateChangeEventHandle = -1;
+        }
+
+        // BindStateChangeEvent() -> KObject
+        public long BindStateChangeEvent(ServiceCtx Context)
+        {
+            if (StateChangeEventHandle == -1)
+            {
+                KernelResult ResultCode = Context.Process.HandleTable.GenerateHandle(StateChangeEvent, out int StateChangeEventHandle);
+
+                if (ResultCode != KernelResult.Success)
+                {
+                    return (long)ResultCode;
+                }
+            }
+
+            Context.Response.HandleDesc = IpcHandleDesc.MakeCopy(StateChangeEventHandle);
+
+            Logger.PrintStub(LogClass.ServicePsm, "Stubbed.");
+
+            return 0;
+        }
+
+        // UnbindStateChangeEvent()
+        public long UnbindStateChangeEvent(ServiceCtx Context)
+        {
+            if (StateChangeEventHandle != -1)
+            {
+                Context.Process.HandleTable.CloseHandle(StateChangeEventHandle);
+                StateChangeEventHandle = -1;
+            }
+
+            Logger.PrintStub(LogClass.ServicePsm, "Stubbed.");
+
+            return 0;
+        }
+
+        // SetChargerTypeChangeEventEnabled(u8)
+        public long SetChargerTypeChangeEventEnabled(ServiceCtx Context)
+        {
+            bool ChargerTypeChangeEventEnabled = Context.RequestData.ReadBoolean();
+
+            Logger.PrintStub(LogClass.ServicePsm, $"Stubbed. ChargerTypeChangeEventEnabled: {ChargerTypeChangeEventEnabled}");
+
+            return 0;
+        }
+
+        // SetPowerSupplyChangeEventEnabled(u8)
+        public long SetPowerSupplyChangeEventEnabled(ServiceCtx Context)
+        {
+            bool PowerSupplyChangeEventEnabled = Context.RequestData.ReadBoolean();
+
+            Logger.PrintStub(LogClass.ServicePsm, $"Stubbed. PowerSupplyChangeEventEnabled: {PowerSupplyChangeEventEnabled}");
+
+            return 0;
+        }
+
+        // SetBatteryVoltageStateChangeEventEnabled(u8)
+        public long SetBatteryVoltageStateChangeEventEnabled(ServiceCtx Context)
+        {
+            bool BatteryVoltageStateChangeEventEnabled = Context.RequestData.ReadBoolean();
+
+            Logger.PrintStub(LogClass.ServicePsm, $"Stubbed. BatteryVoltageStateChangeEventEnabled: {BatteryVoltageStateChangeEventEnabled}");
+
+            return 0;
+        }
+    }
+}