linux-kernel - [PATCH 3/3] ASoC: dapm-graph: show path name for non-static routes

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Message-Id: <20240607-dapm-graph-v1-3-bb302970d055@bootlin.com>
Date: Fri, 07 Jun 2024 09:41:53 +0200
From: Luca Ceresoli <luca.ceresoli@...tlin.com>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>
Subject: [PATCH 3/3] 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@...tlin.com>
---
 tools/sound/dapm-graph | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/sound/dapm-graph b/tools/sound/dapm-graph
index 4e90883912d0..f14bdfedee8f 100755
--- 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"

-- 
2.34.1