[HID] Report passthrough as keyboard type and subtype device.

- Added enums for: X_INPUT_DEVTYPE and X_INPUT_DEVSUBTYPE
- Fixed issue with xinput failure with keyboard flag received

src/xenia/hid/input.h

@@ -34,6 +34,16 @@ enum X_INPUT_FLAG {
   X_INPUT_FLAG_ANY_USER = 1 << 30
 };
 
+enum X_INPUT_DEVTYPE {
+  XINPUT_DEVTYPE_GAMEPAD = 0x00000001,
+  XINPUT_DEVTYPE_KEYBOARD = 0x00000002,
+};
+
+enum X_INPUT_DEVSUBTYPE {
+  XINPUT_DEVSUBTYPE_USB_KEYBOARD = 0x00000000,
+  XINPUT_DEVSUBTYPE_GAMEPAD = 0x00000001,
+};
+
 enum X_INPUT_GAMEPAD_BUTTON {
   X_INPUT_GAMEPAD_DPAD_UP = 0x0001,
   X_INPUT_GAMEPAD_DPAD_DOWN = 0x0002,

src/xenia/hid/winkey/winkey_input_driver.cc

@@ -132,9 +132,14 @@ X_RESULT WinKeyInputDriver::GetCapabilities(uint32_t user_index, uint32_t flags,
     return X_ERROR_DEVICE_NOT_CONNECTED;
   }
 
-  // TODO(benvanik): confirm with a real XInput controller.
-  out_caps->type = 0x01;      // XINPUT_DEVTYPE_GAMEPAD
-  out_caps->sub_type = 0x01;  // XINPUT_DEVSUBTYPE_GAMEPAD
+  if (IsPassthroughEnabled()) {
+    out_caps->type = X_INPUT_DEVTYPE::XINPUT_DEVTYPE_KEYBOARD;
+    out_caps->sub_type = X_INPUT_DEVSUBTYPE::XINPUT_DEVSUBTYPE_USB_KEYBOARD;
+    return X_ERROR_SUCCESS;
+  }
+
+  out_caps->type = X_INPUT_DEVTYPE::XINPUT_DEVTYPE_GAMEPAD;
+  out_caps->sub_type = X_INPUT_DEVSUBTYPE::XINPUT_DEVSUBTYPE_GAMEPAD;
   out_caps->flags = 0;
   out_caps->gamepad.buttons = 0xFFFF;
   out_caps->gamepad.left_trigger = 0xFF;

src/xenia/hid/xinput/xinput_input_driver.cc

@@ -110,7 +110,9 @@ X_RESULT XInputInputDriver::GetCapabilities(uint32_t user_index, uint32_t flags,
   }
   XINPUT_CAPABILITIES native_caps;
   auto xigc = (decltype(&XInputGetCapabilities))XInputGetCapabilities_;
-  DWORD result = xigc(user_index, flags, &native_caps);
+  DWORD result =
+      xigc(user_index, flags & ~X_INPUT_DEVTYPE::XINPUT_DEVTYPE_KEYBOARD,
+           &native_caps);
   if (result) {
     if (result == ERROR_DEVICE_NOT_CONNECTED) {
       set_skip(user_index);