Export gbm device integration to build it outside

Support external build for device integration which uses
kms and gbm. QKmsScreenConfig supports inheritance
to consider platform specific screen configuration.

Task-number: QTBUG-85268
Change-Id: Iac58898a9cf0bb1d53237a719667a6ebd53d88b9
Reviewed-by: Elvis Lee <kwangwoong.lee@lge.com>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

2 files changed, 3 insertions, 4 deletions

diff --git a/src/platformsupport/kmsconvenience/qkmsdevice.cpp b/src/platformsupport/kmsconvenience/qkmsdevice.cpp
index 1ec9c869d7..4206b20a83 100644
--- a/src/platformsupport/kmsconvenience/qkmsdevice.cpp
+++ b/src/platformsupport/kmsconvenience/qkmsdevice.cpp
@@ -1033,7 +1033,6 @@ QKmsScreenConfig::QKmsScreenConfig()
     , m_pbuffers(false)
     , m_virtualDesktopLayout(VirtualDesktopLayoutHorizontal)
 {
-    loadConfig();
 }
 
 void QKmsScreenConfig::loadConfig()
diff --git a/src/platformsupport/kmsconvenience/qkmsdevice_p.h b/src/platformsupport/kmsconvenience/qkmsdevice_p.h
index b7233b29f9..edc7e61e01 100644
--- a/src/platformsupport/kmsconvenience/qkmsdevice_p.h
+++ b/src/platformsupport/kmsconvenience/qkmsdevice_p.h
@@ -111,6 +111,7 @@ public:
     };
 
     QKmsScreenConfig();
+    virtual ~QKmsScreenConfig() {}
 
     QString devicePath() const { return m_devicePath; }
 
@@ -122,10 +123,9 @@ public:
     VirtualDesktopLayout virtualDesktopLayout() const { return m_virtualDesktopLayout; }
 
     QMap<QString, QVariantMap> outputSettings() const { return m_outputSettings; }
+    virtual void loadConfig();
 
-private:
-    void loadConfig();
-
+protected:
     QString m_devicePath;
     bool m_headless;
     QSize m_headlessSize;