758 lines
20 KiB
Bash
Executable File
758 lines
20 KiB
Bash
Executable File
#!/bin/bash
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# setup-audio.sh — Set up barepi audio (TLV320DAC3100 + TDK T5848 mics) on a fresh Pi
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# Usage: sudo ./setup-audio.sh
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set -euo pipefail
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if [ "$(id -u)" -ne 0 ]; then
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echo "Run as root: sudo ./setup-audio.sh"
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exit 1
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fi
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TARGET_USER="${TARGET_USER:-${SUDO_USER:-}}"
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if [ -z "$TARGET_USER" ] || [ "$TARGET_USER" = "root" ]; then
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echo "Could not determine target user." >&2
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echo "Run with sudo from the target account or pass TARGET_USER=<user>." >&2
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exit 1
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fi
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TARGET_HOME="$(getent passwd "$TARGET_USER" | cut -d: -f6 || true)"
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if [ -z "$TARGET_HOME" ] || [ ! -d "$TARGET_HOME" ]; then
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echo "Could not determine home directory for user: $TARGET_USER" >&2
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exit 1
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fi
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CONFIG="/boot/firmware/config.txt"
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if [ ! -f "$CONFIG" ]; then
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echo "Could not find $CONFIG" >&2
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exit 1
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fi
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OVERLAYS="/boot/firmware/overlays"
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mkdir -p "$OVERLAYS"
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RESTORE_HELPER="/usr/local/sbin/barepi-audio-restore"
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RESTORE_SERVICE="/etc/systemd/system/barepi-audio-restore.service"
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MODULES_LOAD_FILE="/etc/modules-load.d/barepi-audio.conf"
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NEED_KERNEL_REBOOT=0
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have_audio_modules() {
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modinfo snd-soc-simple-card >/dev/null 2>&1 \
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&& modinfo snd-soc-tlv320aic31xx >/dev/null 2>&1 \
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&& modinfo snd-soc-ics43432 >/dev/null 2>&1
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}
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install_pkg_if_available() {
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local pkg="$1"
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if apt-cache show "$pkg" >/dev/null 2>&1; then
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apt-get install -y "$pkg"
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return 0
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fi
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return 1
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}
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echo "=== barepi audio setup ==="
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echo "User: $TARGET_USER Home: $TARGET_HOME"
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echo "Config: $CONFIG"
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echo "Overlays: $OVERLAYS"
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echo ""
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# 1. Install packages
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echo "[1/7] Installing packages..."
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apt-get update
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apt-get install -y alsa-utils libasound2-plugins swh-plugins i2c-tools device-tree-compiler
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if ! have_audio_modules; then
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KERNEL_MODULES_PKG="linux-modules-$(uname -r)"
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if install_pkg_if_available "$KERNEL_MODULES_PKG"; then
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echo " Installed $KERNEL_MODULES_PKG"
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fi
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fi
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if ! have_audio_modules && [ -r /etc/os-release ]; then
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. /etc/os-release
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if [ "${ID:-}" = "ubuntu" ] && install_pkg_if_available linux-image-raspi-6.8; then
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install_pkg_if_available linux-headers-raspi-6.8 || true
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NEED_KERNEL_REBOOT=1
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echo " Installed Ubuntu raspi 6.8 kernel fallback for ASoC modules."
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fi
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fi
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if ! have_audio_modules; then
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if [ "$NEED_KERNEL_REBOOT" -eq 1 ]; then
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echo " Current kernel still lacks the required ASoC modules; continuing because a compatible kernel was installed." >&2
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echo " Reboot into the new kernel after setup completes." >&2
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else
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echo "Missing required audio kernel modules: snd-soc-simple-card, snd-soc-tlv320aic31xx, snd-soc-ics43432" >&2
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echo "Install a raspi kernel package that provides them, then rerun this script." >&2
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exit 1
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fi
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fi
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{
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echo "i2c-dev"
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for mod in snd-soc-simple-card snd-soc-tlv320aic31xx snd-soc-ics43432; do
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if [ "$NEED_KERNEL_REBOOT" -eq 1 ] || modinfo "$mod" >/dev/null 2>&1; then
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echo "$mod"
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fi
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done
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} > "$MODULES_LOAD_FILE"
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modprobe i2c-dev || true
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modprobe snd-soc-simple-card || true
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modprobe snd-soc-tlv320aic31xx || true
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modprobe snd-soc-ics43432 || true
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echo " Done."
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# 2. Compile and install device tree overlay
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echo "[2/7] Installing device tree overlay..."
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DTS=$(mktemp /tmp/i2s-audio-XXXX.dts)
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trap 'rm -f "$DTS"' EXIT
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cat > "$DTS" << 'DTS_EOF'
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/dts-v1/;
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/plugin/;
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/ {
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compatible = "brcm,bcm2712";
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fragment@0 {
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target = <&i2s_clk_producer>;
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__overlay__ {
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status = "okay";
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};
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};
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fragment@1 {
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target-path = "/";
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__overlay__ {
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tlv320_dvdd: regulator-tlv320-dvdd {
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compatible = "regulator-fixed";
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regulator-name = "tlv320-dvdd-1v8";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-always-on;
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};
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tlv320_iovdd: regulator-tlv320-iovdd {
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compatible = "regulator-fixed";
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regulator-name = "tlv320-iovdd-3v3";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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tlv320_avdd: regulator-tlv320-avdd {
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compatible = "regulator-fixed";
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regulator-name = "tlv320-avdd-3v3";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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tlv320_hpvdd: regulator-tlv320-hpvdd {
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compatible = "regulator-fixed";
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regulator-name = "tlv320-hpvdd-3v3";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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tlv320_spkvdd: regulator-tlv320-spkvdd {
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compatible = "regulator-fixed";
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regulator-name = "tlv320-spkvdd-5v0";
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regulator-min-microvolt = <5000000>;
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regulator-max-microvolt = <5000000>;
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regulator-always-on;
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};
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/*
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* The T5848 is a control-less I2S microphone from Linux's point
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* of view, so use the generic ICS43432 codec DAI as a simple
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* capture endpoint and keep the speaker path unchanged.
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*/
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mic_codec: t5848-codec {
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compatible = "invensense,ics43432";
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#sound-dai-cells = <0>;
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};
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};
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};
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fragment@2 {
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target = <&i2c_arm>;
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__overlay__ {
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#address-cells = <1>;
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#size-cells = <0>;
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status = "okay";
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dac_codec: tlv320dac3100@18 {
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compatible = "ti,tlv320dac3100";
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reg = <0x18>;
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#sound-dai-cells = <0>;
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AVDD-supply = <&tlv320_avdd>;
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IOVDD-supply = <&tlv320_iovdd>;
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DVDD-supply = <&tlv320_dvdd>;
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HPVDD-supply = <&tlv320_hpvdd>;
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SPLVDD-supply = <&tlv320_spkvdd>;
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SPRVDD-supply = <&tlv320_spkvdd>;
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reset-gpios = <&gpio 12 1>; /* GPIO_ACTIVE_LOW */
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ti,pll-clkin-src = <1>;
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status = "okay";
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};
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};
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};
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fragment@3 {
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target-path = "/";
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__overlay__ {
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sound {
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compatible = "simple-audio-card";
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#address-cells = <1>;
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#size-cells = <0>;
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simple-audio-card,name = "barepi-audio";
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simple-audio-card,format = "i2s";
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status = "okay";
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simple-audio-card,dai-link@0 {
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reg = <0>;
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format = "i2s";
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bitclock-master = <&cpu0>;
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frame-master = <&cpu0>;
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cpu0: cpu {
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sound-dai = <&i2s_clk_producer>;
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};
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codec0: codec {
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sound-dai = <&dac_codec>;
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system-clock-frequency = <1536000>;
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};
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};
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simple-audio-card,dai-link@1 {
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reg = <1>;
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format = "i2s";
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bitclock-master = <&cpu1>;
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frame-master = <&cpu1>;
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cpu1: cpu {
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sound-dai = <&i2s_clk_producer>;
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};
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codec1: codec {
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sound-dai = <&mic_codec>;
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};
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};
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};
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};
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};
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};
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DTS_EOF
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dtc -@ -I dts -O dtb -o "$OVERLAYS/i2s-audio.dtbo" "$DTS"
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rm -f "$DTS"
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trap - EXIT
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echo " Installed $OVERLAYS/i2s-audio.dtbo"
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# 3. Patch config.txt
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echo "[3/7] Configuring config.txt..."
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CHANGED=0
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if grep -q '^dtparam=i2c_arm=on' "$CONFIG"; then
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echo " dtparam=i2c_arm=on already set."
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elif grep -q '^#.*dtparam=i2c_arm=on' "$CONFIG"; then
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sed -i 's/^#.*dtparam=i2c_arm=on/dtparam=i2c_arm=on/' "$CONFIG"
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CHANGED=1
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echo " Uncommented dtparam=i2c_arm=on."
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else
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if grep -q '^dtparam=audio=on' "$CONFIG"; then
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sed -i '/^dtparam=audio=on/a dtparam=i2c_arm=on' "$CONFIG"
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else
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echo "dtparam=i2c_arm=on" >> "$CONFIG"
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fi
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CHANGED=1
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echo " Added dtparam=i2c_arm=on."
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fi
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if grep -q '^dtparam=spi=on' "$CONFIG"; then
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echo " dtparam=spi=on already set."
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elif grep -q '^#.*dtparam=spi=on' "$CONFIG"; then
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sed -i 's/^#.*dtparam=spi=on/dtparam=spi=on/' "$CONFIG"
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CHANGED=1
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echo " Uncommented dtparam=spi=on."
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else
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if grep -q '^dtparam=audio=on' "$CONFIG"; then
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sed -i '/^dtparam=audio=on/a dtparam=spi=on' "$CONFIG"
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else
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echo "dtparam=spi=on" >> "$CONFIG"
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fi
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CHANGED=1
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echo " Added dtparam=spi=on."
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fi
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if grep -q '^dtparam=i2s=on' "$CONFIG"; then
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echo " dtparam=i2s=on already set."
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elif grep -q '^#.*dtparam=i2s=on' "$CONFIG"; then
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sed -i 's/^#.*dtparam=i2s=on/dtparam=i2s=on/' "$CONFIG"
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CHANGED=1
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echo " Uncommented dtparam=i2s=on."
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else
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if grep -q '^dtparam=audio=on' "$CONFIG"; then
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sed -i '/^dtparam=audio=on/a dtparam=i2s=on' "$CONFIG"
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else
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echo "dtparam=i2s=on" >> "$CONFIG"
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fi
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CHANGED=1
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echo " Added dtparam=i2s=on."
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fi
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if grep -q '^dtoverlay=i2s-audio' "$CONFIG"; then
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echo " dtoverlay=i2s-audio already set."
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elif grep -q '^#.*dtoverlay=i2s-audio' "$CONFIG"; then
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sed -i 's/^#.*dtoverlay=i2s-audio/dtoverlay=i2s-audio/' "$CONFIG"
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CHANGED=1
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echo " Uncommented dtoverlay=i2s-audio."
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else
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if grep -q '^dtparam=i2s=on' "$CONFIG"; then
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sed -i '/^dtparam=i2s=on/a dtoverlay=i2s-audio' "$CONFIG"
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else
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echo "dtoverlay=i2s-audio" >> "$CONFIG"
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fi
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CHANGED=1
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echo " Added dtoverlay=i2s-audio."
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fi
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if grep -q '^gpio=12=op,dh' "$CONFIG"; then
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echo " gpio=12=op,dh already set."
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elif grep -q '^#.*gpio=12=op,dh' "$CONFIG"; then
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sed -i 's/^#.*gpio=12=op,dh/gpio=12=op,dh/' "$CONFIG"
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CHANGED=1
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echo " Uncommented gpio=12=op,dh."
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elif grep -q '^gpio=12=' "$CONFIG"; then
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echo " Existing gpio=12=... line found; left unchanged." >&2
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echo " Make sure it keeps the DAC out of reset (gpio=12=op,dh)." >&2
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else
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if grep -q '^dtoverlay=i2s-audio' "$CONFIG"; then
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sed -i '/^dtoverlay=i2s-audio/a gpio=12=op,dh' "$CONFIG"
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elif grep -q '^dtparam=i2s=on' "$CONFIG"; then
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sed -i '/^dtparam=i2s=on/a gpio=12=op,dh' "$CONFIG"
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else
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echo "gpio=12=op,dh" >> "$CONFIG"
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fi
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CHANGED=1
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echo " Added gpio=12=op,dh."
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fi
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# 4. Install .asoundrc
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echo "[4/7] Installing .asoundrc..."
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cat > "$TARGET_HOME/.asoundrc" << 'ASOUNDRC'
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defaults.pcm.rate_converter "samplerate_best"
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pcm.!default {
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type plug
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slave {
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pcm "filtered"
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rate 48000
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}
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}
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pcm.filtered {
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type ladspa
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slave.pcm "out"
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path "/usr/lib/ladspa"
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plugins [
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{
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label highpass_iir
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input {
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controls [ 100 1 ]
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}
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}
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{
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label hardLimiter
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input {
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controls [ 0 1 0 ]
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}
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}
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]
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}
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pcm.out {
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type plug
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slave {
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pcm "hw:CARD=barepiaudio,DEV=1"
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format S16_LE
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}
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}
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pcm.barepi_playback {
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type plug
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slave {
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pcm "out"
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rate 48000
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}
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}
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pcm.barepi_capture {
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type plug
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slave {
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pcm "hw:CARD=barepiaudio,DEV=0"
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format S32_LE
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rate 48000
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channels 2
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}
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}
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ctl.!default {
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type hw
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card barepiaudio
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}
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ASOUNDRC
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chown "$TARGET_USER:$TARGET_USER" "$TARGET_HOME/.asoundrc"
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echo " Installed $TARGET_HOME/.asoundrc"
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# 5. Install volume.sh
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echo "[5/7] Installing volume.sh..."
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cat > "$TARGET_HOME/volume.sh" << 'VOLSCRIPT'
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#!/bin/bash
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# DAC3100 speaker-path helper
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# Usage: ./volume.sh [dac] [driver] [analog]
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# dac: 0-175 (digital volume, 127=0dB)
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# driver: 0-3 (class-D gain: 6/12/18/24 dB)
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# analog: 0-127 (analog volume, 127=0dB)
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set -euo pipefail
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CARD_ID="barepiaudio"
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CARD_NAME="barepi-audio"
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DEFAULT_DAC=127
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DEFAULT_DRIVER=0
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DEFAULT_ANALOG=50
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find_card() {
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awk -v id="$CARD_ID" -v name="$CARD_NAME" '
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index($0, "[" id "]") || index($0, name) { print $1; exit }
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' /proc/asound/cards
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}
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show_status() {
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echo "Using ALSA card: $CARD ($CARD_NAME)"
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amixer -c "$CARD" sget 'DAC' || true
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amixer -c "$CARD" sget 'DAC Left Input' || true
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amixer -c "$CARD" sget 'DAC Right Input' || true
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amixer -c "$CARD" sget 'Output Left From Left DAC' || true
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amixer -c "$CARD" sget 'Output Right From Right DAC' || true
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amixer -c "$CARD" sget 'Speaker' || true
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amixer -c "$CARD" sget 'Speaker Driver' || true
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amixer -c "$CARD" sget 'Speaker Analog' || true
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}
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enable_speaker_path() {
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echo "Enabling TLV320 speaker path..."
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amixer -c "$CARD" sset 'DAC Left Input' 'Left Data' >/dev/null || true
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amixer -c "$CARD" sset 'DAC Right Input' 'Right Data' >/dev/null || true
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amixer -c "$CARD" sset 'Output Left From Left DAC' on >/dev/null || true
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amixer -c "$CARD" sset 'Output Right From Right DAC' on >/dev/null || true
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amixer -c "$CARD" sset 'Speaker' on >/dev/null || true
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amixer -c "$CARD" sset 'HP Left' off >/dev/null || true
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amixer -c "$CARD" sset 'HP Right' off >/dev/null || true
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amixer -c "$CARD" sset 'HP Driver' 0 >/dev/null || true
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amixer -c "$CARD" sset 'HP Driver' off >/dev/null || true
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}
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CARD="$(find_card || true)"
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if [ -z "$CARD" ]; then
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echo "Could not find ALSA card for $CARD_NAME." >&2
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echo "Reboot after setup, then check /proc/asound/cards." >&2
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exit 1
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fi
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if [ $# -eq 0 ]; then
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show_status
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exit 0
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fi
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DAC=${1:-$DEFAULT_DAC}
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DRIVER=${2:-$DEFAULT_DRIVER}
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ANALOG=${3:-$DEFAULT_ANALOG}
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enable_speaker_path
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echo "Setting levels..."
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amixer -c "$CARD" sset 'DAC' "${DAC},${DAC}" >/dev/null
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amixer -c "$CARD" sset 'Speaker Driver' "$DRIVER" >/dev/null || true
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amixer -c "$CARD" sset 'Speaker Driver' on >/dev/null || true
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amixer -c "$CARD" sset 'Speaker Analog' "$ANALOG" >/dev/null || true
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alsactl store "$CARD" >/dev/null 2>&1 || alsactl store >/dev/null 2>&1 || true
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echo ""
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echo "Using ALSA card: $CARD ($CARD_NAME)"
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echo "Set: dac=$DAC driver=$DRIVER analog=$ANALOG"
|
|
echo "Example: ./volume.sh 127 0 50"
|
|
VOLSCRIPT
|
|
chown "$TARGET_USER:$TARGET_USER" "$TARGET_HOME/volume.sh"
|
|
chmod +x "$TARGET_HOME/volume.sh"
|
|
echo " Installed $TARGET_HOME/volume.sh"
|
|
|
|
# 6. Install a mic test helper
|
|
echo "[6/7] Installing test-mics.sh..."
|
|
cat > "$TARGET_HOME/test-mics.sh" << 'MICTEST'
|
|
#!/bin/bash
|
|
# Capture a short stereo sample from the barepi mic path and print per-channel stats.
|
|
# Usage:
|
|
# ./test-mics.sh [seconds] [out.wav]
|
|
# ./test-mics.sh --thsel-high [seconds] [out.wav]
|
|
# ./test-mics.sh --thsel-low [seconds] [out.wav]
|
|
|
|
set -euo pipefail
|
|
|
|
RATE=48000
|
|
FORMAT=S32_LE
|
|
CHANNELS=2
|
|
DURATION=3
|
|
OUT=""
|
|
THSEL=""
|
|
CAPTURE_PCM="${CAPTURE_PCM:-barepi_capture}"
|
|
|
|
usage() {
|
|
cat <<'EOF'
|
|
Usage:
|
|
./test-mics.sh [seconds] [out.wav]
|
|
./test-mics.sh --thsel-high [seconds] [out.wav]
|
|
./test-mics.sh --thsel-low [seconds] [out.wav]
|
|
EOF
|
|
}
|
|
|
|
set_thsel() {
|
|
local level="$1"
|
|
command -v pinctrl >/dev/null 2>&1 || return 0
|
|
if [ "$level" = "high" ]; then
|
|
sudo pinctrl set 8 op pn dh >/dev/null
|
|
else
|
|
sudo pinctrl set 8 op pn dl >/dev/null
|
|
fi
|
|
}
|
|
|
|
prepare_wake_pin() {
|
|
command -v pinctrl >/dev/null 2>&1 || return 0
|
|
sudo pinctrl set 13 ip pn >/dev/null 2>&1 || true
|
|
}
|
|
|
|
show_pins() {
|
|
command -v pinctrl >/dev/null 2>&1 || return 0
|
|
sudo pinctrl get 8,13 || true
|
|
}
|
|
|
|
positional=()
|
|
while [ $# -gt 0 ]; do
|
|
case "$1" in
|
|
--thsel-high)
|
|
THSEL="high"
|
|
shift
|
|
;;
|
|
--thsel-low)
|
|
THSEL="low"
|
|
shift
|
|
;;
|
|
-h|--help)
|
|
usage
|
|
exit 0
|
|
;;
|
|
*)
|
|
positional+=("$1")
|
|
shift
|
|
;;
|
|
esac
|
|
done
|
|
|
|
if [ ${#positional[@]} -ge 1 ]; then
|
|
DURATION="${positional[0]}"
|
|
fi
|
|
if [ ${#positional[@]} -ge 2 ]; then
|
|
OUT="${positional[1]}"
|
|
fi
|
|
if [ -z "$OUT" ]; then
|
|
OUT="/tmp/barepi-mics-$(date +%Y%m%d-%H%M%S).wav"
|
|
fi
|
|
|
|
if ! arecord -L 2>/dev/null | grep -qx 'barepi_capture'; then
|
|
CAPTURE_PCM="plughw:CARD=barepiaudio,DEV=0"
|
|
fi
|
|
|
|
if [ -n "$THSEL" ]; then
|
|
set_thsel "$THSEL"
|
|
fi
|
|
prepare_wake_pin
|
|
show_pins
|
|
|
|
echo "Recording ${DURATION}s from ${CAPTURE_PCM} -> ${OUT}"
|
|
arecord -q -D "$CAPTURE_PCM" -f "$FORMAT" -c "$CHANNELS" -r "$RATE" -d "$DURATION" "$OUT"
|
|
|
|
python3 - <<'PY' "$OUT"
|
|
import math
|
|
import struct
|
|
import sys
|
|
import wave
|
|
|
|
path = sys.argv[1]
|
|
with wave.open(path, 'rb') as w:
|
|
channels = w.getnchannels()
|
|
width = w.getsampwidth()
|
|
rate = w.getframerate()
|
|
frames = w.getnframes()
|
|
data = w.readframes(frames)
|
|
|
|
if channels != 2 or width != 4:
|
|
print(f"Recorded {channels}ch / {width * 8}bit at {rate} Hz")
|
|
sys.exit(0)
|
|
|
|
samples = list(struct.iter_unpack('<ii', data))
|
|
left = [l for l, _ in samples]
|
|
right = [r for _, r in samples]
|
|
|
|
def rms(xs):
|
|
return math.sqrt(sum(x * x for x in xs) / len(xs)) if xs else 0.0
|
|
|
|
def peak(xs):
|
|
return max((abs(x) for x in xs), default=0)
|
|
|
|
l_rms = rms(left)
|
|
r_rms = rms(right)
|
|
l_peak = peak(left)
|
|
r_peak = peak(right)
|
|
full_scale = float(2**31 - 1)
|
|
|
|
print(f"Saved: {path}")
|
|
print(f"Rate: {rate} Hz Frames: {frames}")
|
|
print(f"Left : rms={int(l_rms):>10} peak={l_peak:>10} peak_dBFS={20*math.log10(max(l_peak,1)/full_scale):6.1f}")
|
|
print(f"Right: rms={int(r_rms):>10} peak={r_peak:>10} peak_dBFS={20*math.log10(max(r_peak,1)/full_scale):6.1f}")
|
|
PY
|
|
MICTEST
|
|
chown "$TARGET_USER:$TARGET_USER" "$TARGET_HOME/test-mics.sh"
|
|
chmod +x "$TARGET_HOME/test-mics.sh"
|
|
echo " Installed $TARGET_HOME/test-mics.sh"
|
|
|
|
# 7. Install a boot-time restore helper so the speaker path comes up after reboot
|
|
echo "[7/7] Installing boot-time mixer restore..."
|
|
cat > "$RESTORE_HELPER" << 'RESTORESCRIPT'
|
|
#!/bin/bash
|
|
set -euo pipefail
|
|
|
|
CARD_ID="barepiaudio"
|
|
CARD_NAME="barepi-audio"
|
|
I2C_BUS="${I2C_BUS:-1}"
|
|
CODEC_ADDR="${CODEC_ADDR:-0x18}"
|
|
MIC_THSEL_LEVEL="${MIC_THSEL_LEVEL:-high}"
|
|
DAC=${1:-127}
|
|
DRIVER=${2:-0}
|
|
ANALOG=${3:-50}
|
|
|
|
find_card() {
|
|
awk -v id="$CARD_ID" -v name="$CARD_NAME" '
|
|
index($0, "[" id "]") || index($0, name) { print $1; exit }
|
|
' /proc/asound/cards
|
|
}
|
|
|
|
codec_ready() {
|
|
i2cget -y -f "$I2C_BUS" "$CODEC_ADDR" 0 >/dev/null 2>&1
|
|
}
|
|
|
|
set_mixer() {
|
|
amixer -q -c "$CARD" "$@" >/dev/null 2>&1 || true
|
|
}
|
|
|
|
set_mic_pins() {
|
|
if ! command -v pinctrl >/dev/null 2>&1; then
|
|
return 0
|
|
fi
|
|
|
|
case "$MIC_THSEL_LEVEL" in
|
|
low)
|
|
pinctrl set 8 op pn dl >/dev/null 2>&1 || true
|
|
;;
|
|
*)
|
|
pinctrl set 8 op pn dh >/dev/null 2>&1 || true
|
|
;;
|
|
esac
|
|
|
|
pinctrl set 13 ip pn >/dev/null 2>&1 || true
|
|
}
|
|
|
|
CARD=""
|
|
for _ in $(seq 1 20); do
|
|
CARD="$(find_card || true)"
|
|
if [ -n "$CARD" ]; then
|
|
break
|
|
fi
|
|
sleep 1
|
|
done
|
|
|
|
if [ -z "$CARD" ]; then
|
|
echo "barepi-audio card not present; skipping restore."
|
|
exit 0
|
|
fi
|
|
|
|
for _ in $(seq 1 20); do
|
|
if codec_ready; then
|
|
break
|
|
fi
|
|
sleep 1
|
|
done
|
|
|
|
if ! codec_ready; then
|
|
echo "TLV320 codec not responding on i2c-${I2C_BUS} addr ${CODEC_ADDR}; skipping restore."
|
|
exit 0
|
|
fi
|
|
|
|
set_mic_pins
|
|
set_mixer sset 'DAC Left Input' 'Left Data'
|
|
set_mixer sset 'DAC Right Input' 'Right Data'
|
|
set_mixer sset 'Output Left From Left DAC' on
|
|
set_mixer sset 'Output Right From Right DAC' on
|
|
set_mixer sset 'Speaker' on
|
|
set_mixer sset 'Speaker Driver' "$DRIVER"
|
|
set_mixer sset 'Speaker Driver' on
|
|
set_mixer sset 'Speaker Analog' "$ANALOG"
|
|
set_mixer sset 'DAC' "${DAC},${DAC}"
|
|
set_mixer sset 'HP Left' off
|
|
set_mixer sset 'HP Right' off
|
|
set_mixer sset 'HP Driver' '0,0'
|
|
set_mixer sset 'HP Driver' off
|
|
RESTORESCRIPT
|
|
chmod 755 "$RESTORE_HELPER"
|
|
|
|
cat > "$RESTORE_SERVICE" << EOF
|
|
[Unit]
|
|
Description=Restore barepi TLV320 speaker routing
|
|
After=sound.target
|
|
Wants=sound.target
|
|
|
|
[Service]
|
|
Type=oneshot
|
|
ExecStart=$RESTORE_HELPER 127 0 50
|
|
|
|
[Install]
|
|
WantedBy=multi-user.target
|
|
EOF
|
|
|
|
systemctl daemon-reload
|
|
systemctl enable barepi-audio-restore.service >/dev/null
|
|
|
|
if grep -q '\[barepiaudio\]' /proc/asound/cards 2>/dev/null || grep -q 'barepi-audio' /proc/asound/cards 2>/dev/null; then
|
|
"$RESTORE_HELPER" 127 0 50 || true
|
|
echo " Applied mixer defaults to the live barepi-audio card."
|
|
else
|
|
echo " Live barepi-audio card not present yet; defaults will be applied at boot."
|
|
fi
|
|
|
|
echo ""
|
|
echo "=== Done ==="
|
|
if [ "$CHANGED" -eq 1 ]; then
|
|
echo "config.txt was modified."
|
|
fi
|
|
if [ "$NEED_KERNEL_REBOOT" -eq 1 ]; then
|
|
echo "A compatible Ubuntu raspi kernel was installed."
|
|
fi
|
|
echo "Reboot to load the updated overlay and audio kernel/module state."
|
|
echo "Speaker routing defaults and mic GPIO defaults will be restored automatically after boot."
|
|
echo "Manual speaker check/adjust: $TARGET_HOME/volume.sh"
|
|
echo "Manual mic test: $TARGET_HOME/test-mics.sh"
|