From 746dadcb59f8ea3ca3b837f923b7d23a43cd8cce Mon Sep 17 00:00:00 2001
From: Marco Rodolfi <marco.rodolfi@tuta.io>
Date: Thu, 31 Aug 2023 11:37:59 +0200
Subject: [PATCH] Audio part 2

---
 .../main.lua.d/60-alsa-card0-config.lua       | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 system_files/deck/shared/etc/wireplumber/main.lua.d/60-alsa-card0-config.lua

diff --git a/system_files/deck/shared/etc/wireplumber/main.lua.d/60-alsa-card0-config.lua b/system_files/deck/shared/etc/wireplumber/main.lua.d/60-alsa-card0-config.lua
new file mode 100644
index 00000000..6a887c98
--- /dev/null
+++ b/system_files/deck/shared/etc/wireplumber/main.lua.d/60-alsa-card0-config.lua
@@ -0,0 +1,25 @@
+-- HDMI output is always plugged in card 0 (HD_Audio Generic)
+-- We always give higher priority to nodes from that card
+-- Disable suspend timeout for HDMI to remove audio delay after idle
+
+table.insert (alsa_monitor.rules, {
+  matches = {
+    {
+      -- Matches all sources from card HD-Audio Generic
+      { "node.name", "matches", "alsa_input.*" },
+      { "alsa.card_name", "matches", "HD-Audio Generic" },
+    },
+    {
+      -- Matches all sinks from card HD-Audio Generic
+      { "node.name", "matches", "alsa_output.*" },
+      { "alsa.card_name", "matches", "HD-Audio Generic" },
+    },
+  },
+  apply_properties = {
+    ["priority.driver"]        = 900,
+    ["priority.session"]       = 900,
+    ["api.alsa.period-size"]   = 256,
+    ["api.alsa.headroom"]      = 1024,
+    ["session.suspend-timeout-seconds"] = 0
+  }
+})