diff --git a/Documentation/Doxyfile.in b/Documentation/Doxyfile.in
index b1a70d3..16dcccd 100644
--- a/Documentation/Doxyfile.in
+++ b/Documentation/Doxyfile.in
@@ -442,7 +442,7 @@ EXTRACT_ALL            = NO
 # be included in the documentation.
 # The default value is: NO.
 
-EXTRACT_PRIVATE        = NO
+EXTRACT_PRIVATE        = YES
 
 # If the EXTRACT_PACKAGE tag is set to YES, all members with package or internal
 # scope will be included in the documentation.
@@ -487,7 +487,7 @@ EXTRACT_ANON_NSPACES   = NO
 # section is generated. This option has no effect if EXTRACT_ALL is enabled.
 # The default value is: NO.
 
-HIDE_UNDOC_MEMBERS     = NO
+HIDE_UNDOC_MEMBERS     = YES
 
 # If the HIDE_UNDOC_CLASSES tag is set to YES, doxygen will hide all
 # undocumented classes that are normally visible in the class hierarchy. If set
diff --git a/src/libcamera/media_device.cpp b/src/libcamera/media_device.cpp
index b86d0c4..48aa805 100644
--- a/src/libcamera/media_device.cpp
+++ b/src/libcamera/media_device.cpp
@@ -641,6 +641,28 @@ bool MediaDevice::populateLinks(const struct media_v2_topology &topology)
 	return true;
 }
 
+/**
+ * \brief Apply \a flags to a link between two pads
+ * \param source The source pad
+ * \param sink The sink pad
+ * \param flags The link flags
+ *
+ * Implements 'raw' link handling, as this functions applies \a flags,
+ * (whose only accepted values are the ones defined by the Media Controller
+ * APIs in MEDIA_LNK_FL_* macros) to a link between two pads. No correctness
+ * checks on the link existence and validity of \a flags is performed. The
+ * function assumes the \a source and \a sink pads are connected, and the
+ * supplied \a flags applies to the link (ie. immutable links cannot be
+ * disabled).
+ *
+ * This function wraps the raw MEDIA_IOC_SETUP_LINK ioctl, and shouldn't be
+ * called directly by any other class or method but the
+ * MediaLink::setup(bool enable) one, declared as friend for this reason.
+ *
+ * \sa MediaLink::setup(bool enable)
+ *
+ * \return 0 for success, negative error number otherwise
+ */
 int MediaDevice::setLink(const MediaPad *source, const MediaPad *sink,
 			 unsigned int flags)
 {