onboard audio: JMISC HPH wiring, UCM fix, update scripts for git deploy

2026-06-23 21:25:51 -07:00
parent a135dc4452
commit d239d58c44
22 changed files with 227 additions and 77 deletions
@@ -0,0 +1,44 @@
+# ALSA configuration for USB gadget audio
+# The UAC1 gadget appears as a ALSA card (typically card 1 or 2).
+# This config routes Pd audio output to the USB gadget.
+
+# Default PCM device for USB gadget audio
+pcm.!default {
+    type plug
+    slave {
+        pcm "hw:UAC1Gadget,0"
+        format S16_LE
+        channels 2
+        rate 48000
+    }
+}
+
+# Control device
+ctl.!default {
+    type hw
+    card UAC1Gadget
+}
+
+# Software volume control via ALSA (hardware may not have mixer)
+pcm.softvol {
+    type softvol
+    slave.pcm "hw:UAC1Gadget,0"
+    control {
+        name "Master Playback Volume"
+        card UAC1Gadget
+    }
+    min_dB -51.0
+    max_dB 0.0
+    resolution 256
+}
+
+# Null sink for testing when no USB gadget is connected
+pcm.loopback {
+    type plug
+    slave {
+        pcm "hw:Loopback,0,0"
+        format S16_LE
+        channels 2
+        rate 48000
+    }
+}