doc: adjust doxygen settings

More verbose settings due to the fact that all annotations are
actually in kernel-doc format :)

Signed-off-by: Patrick McHardy <kaber@trash.net>

doc/Doxyfile.in

@@ -277,7 +277,7 @@ TYPEDEF_HIDES_STRUCT   = NO
 # Private class members and static file members will be hidden unless 
 # the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
 
-EXTRACT_ALL            = NO
+EXTRACT_ALL            = YES
 
 # If the EXTRACT_PRIVATE tag is set to YES all private members of a class 
 # will be included in the documentation.
@@ -557,7 +557,7 @@ FILE_PATTERNS          =
 # should be searched for input files as well. Possible values are YES and NO. 
 # If left blank NO is used.
 
-RECURSIVE              = NO
+RECURSIVE              = YES
 
 # The EXCLUDE tag can be used to specify files and/or directories that should 
 # excluded from the INPUT source files. This way you can easily exclude a 
@@ -850,7 +850,7 @@ DISABLE_INDEX          = NO
 # This tag can be used to set the number of enum values (range [1..20]) 
 # that doxygen will group on one line in the generated HTML documentation.
 
-ENUM_VALUES_PER_LINE   = 4
+ENUM_VALUES_PER_LINE   = 1
 
 # The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
 # structure should be generated to display hierarchical information.
@@ -867,7 +867,7 @@ ENUM_VALUES_PER_LINE   = 4
 # releases of Doxygen, the values YES and NO are equivalent to FRAME and NONE
 # respectively.
 
-GENERATE_TREEVIEW      = NONE
+GENERATE_TREEVIEW      = YES
 
 # If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be 
 # used to set the initial width (in pixels) of the frame in which the tree 
@@ -1251,7 +1251,7 @@ HIDE_UNDOC_RELATIONS   = YES
 # toolkit from AT&T and Lucent Bell Labs. The other options in this section 
 # have no effect if this option is set to NO (the default)
 
-HAVE_DOT               = NO
+HAVE_DOT               = YES
 
 # By default doxygen will write a font called FreeSans.ttf to the output 
 # directory and reference it in all dot files that doxygen generates. This 
@@ -1321,7 +1321,7 @@ INCLUDED_BY_GRAPH      = YES
 # the time of a run. So in most cases it will be better to enable call graphs 
 # for selected functions only using the \callgraph command.
 
-CALL_GRAPH             = NO
+CALL_GRAPH             = YES
 
 # If the CALLER_GRAPH and HAVE_DOT tags are set to YES then 
 # doxygen will generate a caller dependency graph for every global function 
@@ -1329,7 +1329,7 @@ CALL_GRAPH             = NO
 # the time of a run. So in most cases it will be better to enable caller 
 # graphs for selected functions only using the \callergraph command.
 
-CALLER_GRAPH           = NO
+CALLER_GRAPH           = YES
 
 # If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen 
 # will graphical hierarchy of all classes instead of a textual one.
@@ -1393,7 +1393,7 @@ DOT_TRANSPARENT        = YES
 # makes dot run faster, but since only newer versions of dot (>1.8.10) 
 # support this, this feature is disabled by default.
 
-DOT_MULTI_TARGETS      = NO
+DOT_MULTI_TARGETS      = YES
 
 # If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will 
 # generate a legend page explaining the meaning of the various boxes and