backends/drm: Use drmModeGetConnectorTypeName()

It ensures that connector type naming is consistent across compositors
and saves us some work adding string mappings.

drmModeGetConnectorTypeName() uses the same naming scheme as the drm
backend so the client side should be unaffected by this change.

CCBUG: 385135

CMakeLists.txt

@@ -247,7 +247,7 @@ set_package_properties(UDev PROPERTIES
     PURPOSE "Required for input handling on Wayland."
 )
 
-find_package(Libdrm 2.4.108)
+find_package(Libdrm 2.4.112)
 set_package_properties(Libdrm PROPERTIES TYPE REQUIRED PURPOSE "Required for drm output on Wayland.")
 
 find_package(gbm)

src/backends/drm/drm_connector.cpp

@@ -143,39 +143,13 @@ bool DrmConnector::isConnected() const
     return !m_driverModes.empty() && m_conn && m_conn->connection == DRM_MODE_CONNECTED;
 }
 
-static QHash<int, QByteArray> s_connectorNames = {
-    {DRM_MODE_CONNECTOR_Unknown, QByteArrayLiteral("Unknown")},
-    {DRM_MODE_CONNECTOR_VGA, QByteArrayLiteral("VGA")},
-    {DRM_MODE_CONNECTOR_DVII, QByteArrayLiteral("DVI-I")},
-    {DRM_MODE_CONNECTOR_DVID, QByteArrayLiteral("DVI-D")},
-    {DRM_MODE_CONNECTOR_DVIA, QByteArrayLiteral("DVI-A")},
-    {DRM_MODE_CONNECTOR_Composite, QByteArrayLiteral("Composite")},
-    {DRM_MODE_CONNECTOR_SVIDEO, QByteArrayLiteral("SVIDEO")},
-    {DRM_MODE_CONNECTOR_LVDS, QByteArrayLiteral("LVDS")},
-    {DRM_MODE_CONNECTOR_Component, QByteArrayLiteral("Component")},
-    {DRM_MODE_CONNECTOR_9PinDIN, QByteArrayLiteral("DIN")},
-    {DRM_MODE_CONNECTOR_DisplayPort, QByteArrayLiteral("DP")},
-    {DRM_MODE_CONNECTOR_HDMIA, QByteArrayLiteral("HDMI-A")},
-    {DRM_MODE_CONNECTOR_HDMIB, QByteArrayLiteral("HDMI-B")},
-    {DRM_MODE_CONNECTOR_TV, QByteArrayLiteral("TV")},
-    {DRM_MODE_CONNECTOR_eDP, QByteArrayLiteral("eDP")},
-    {DRM_MODE_CONNECTOR_VIRTUAL, QByteArrayLiteral("Virtual")},
-    {DRM_MODE_CONNECTOR_DSI, QByteArrayLiteral("DSI")},
-    {DRM_MODE_CONNECTOR_DPI, QByteArrayLiteral("DPI")},
-#ifdef DRM_MODE_CONNECTOR_WRITEBACK
-    {DRM_MODE_CONNECTOR_WRITEBACK, QByteArrayLiteral("Writeback")},
-#endif
-#ifdef DRM_MODE_CONNECTOR_SPI
-    {DRM_MODE_CONNECTOR_SPI, QByteArrayLiteral("SPI")},
-#endif
-#ifdef DRM_MODE_CONNECTOR_USB
-    {DRM_MODE_CONNECTOR_USB, QByteArrayLiteral("USB")},
-#endif
-};
-
 QString DrmConnector::connectorName() const
 {
-    return s_connectorNames.value(m_conn->connector_type, QByteArrayLiteral("Unknown")) + QStringLiteral("-") + QString::number(m_conn->connector_type_id);
+    const char *connectorName = drmModeGetConnectorTypeName(m_conn->connector_type);
+    if (!connectorName) {
+        connectorName = "Unknown";
+    }
+    return QStringLiteral("%1-%2").arg(connectorName).arg(m_conn->connector_type_id);
 }
 
 QString DrmConnector::modelName() const