ASoC: dapm-graph: show path name for non-static routes

Many routes are just static, not modifiable at runtime. Show the route name
for all the other routes as an edge label in the generated graph.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20240823-dapm-graph-v1-3-989a47308c4c@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/tools/sound/dapm-graph b/tools/sound/dapm-graph
index 4e90883912d0123de4ae20a938f6c143c1868309..f14bdfedee8f11507a6b7b04f6dd1847513e6da8 100755 (executable)
--- a/tools/sound/dapm-graph
+++ b/tools/sound/dapm-graph
@@ -134,11 +134,17 @@ process_dapm_widget()
            # Collect any links. We could use "in" links or "out" links,
            # let's use "in" links
            if echo "${line}" | grep -q '^in '; then
+               local w_route=$(echo "$line" | awk -F\" '{print $2}')
                local w_src=$(echo "$line" |
                                  awk -F\" '{print $6 "_" $4}' |
                                  sed  's/^(null)_/ROOT_/')
                dbg_echo "     - Input route from: ${w_src}"
-               echo "  \"${w_src}\" -> \"$w_tag\"" >> "${links_file}"
+               dbg_echo "     - Route: ${w_route}"
+               local w_edge_attrs=""
+               if [ "${w_route}" != "static" ]; then
+                   w_edge_attrs=" [label=\"${w_route}\"]"
+               fi
+               echo "  \"${w_src}\" -> \"$w_tag\"${w_edge_attrs}" >> "${links_file}"
            fi
        done
 
@@ -220,7 +226,7 @@ process_dapm_tree()
     echo "digraph G {" > "${dot_file}"
     echo "  fontname=\"sans-serif\"" >> "${dot_file}"
     echo "  node [fontname=\"sans-serif\"]" >> "${dot_file}"
-
+    echo "  edge [fontname=\"sans-serif\"]" >> "${dot_file}"
 
     # Process root directory (no component)
     process_dapm_component "${tmp_dir}" "${dapm_dir}/dapm" "ROOT"