#!/bin/sh

# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2009-2014 Stephan Raue (stephan@openelec.tv)
# Copyright (C) 2018-present Team LibreELEC (https://libreelec.tv)

# setup alsa (especially the mixer config)

mixer() {
  parm=${4:-on}
  amixer -c "$1" sset "$2" "$3" $parm >/dev/null 2>&1
  amixer -c "$1" sset "$2" $parm >/dev/null 2>&1
}

(
  . /etc/profile

  progress "Setting up sound card"

  if [ -f $HOME/.config/sound.conf ]; then

    alsactl restore -f $HOME/.config/sound.conf

  else

    # get card num
    card=$(echo $1 | sed 's/[^0-9]*//g')

    # set common mixer params
    mixer "$card" Master 0db
    mixer "$card" Front 100%
    mixer "$card" PCM 0db
    mixer "$card" Synth 100%

    # mute CD, since using digital audio instead
    mixer "$card" CD 0% mute

    # Only unmute Line and Aux if they are possibly used.
    #  mixer "$card" Line 100%
    #  mixer "$card" Aux 100%

    # mute mic
    mixer "$card" Mic 0% mute

    # ESS 1969 chipset has 2 PCM channels
    mixer "$card" PCM,1 100%

    # Trident/YMFPCI/emu10k1
    mixer "$card" Wave 100%
    mixer "$card" Music 100%
    mixer "$card" AC97 100%
    mixer "$card" Surround 90%
    mixer "$card" 'Surround Digital' 90%
    mixer "$card" 'Wave Surround' 90%
    mixer "$card" 'Duplicate Front' 90%
    mixer "$card" 'Sigmatel 4-Speaker Stereo' 90%

    # CS4237B chipset:
    mixer "$card" 'Master Digital' 100%

    # DRC
    mixer "$card" 'Dynamic Range Compression' 90%

    # Envy24 chips with analog outs
    mixer "$card" DAC 100%
    mixer "$card" DAC,0 100%
    mixer "$card" DAC,1 100%

    # some notebooks use headphone instead of master
    mixer "$card" Headphone 100%
    mixer "$card" Speaker 100%
    mixer "$card" 'Internal Speaker' 0% mute
    mixer "$card" Playback 100%
    mixer "$card" Headphone 100%
    mixer "$card" Speaker 100%
    mixer "$card" Center 100%
    mixer "$card" LFE 100%
    mixer "$card" Center/LFE 100%

    # Intel P4P800-MX  (Ubuntu bug #5813)
    mixer "$card" 'Master Playback Switch' on

    # set digital output mixer params
    mixer "$card" 'IEC958' 100% on
    mixer "$card" 'IEC958 Output' 100%
    mixer "$card" 'IEC958 Coaxial' 100%
    mixer "$card" 'IEC958 LiveDrive' 100%
    mixer "$card" 'IEC958 Optical Raw' 100%
    mixer "$card" 'SPDIF Out' 100%
    mixer "$card" 'SPDIF Front' 100%
    mixer "$card" 'SPDIF Rear' 100%
    mixer "$card" 'SPDIF Center/LFE' 100%
    mixer "$card" 'Master Digital' 100%

    mixer "$card" 'Analog Front' 100%
    mixer "$card" 'Analog Rear' 100%
    mixer "$card" 'Analog Center/LFE' 100%

    # ASRock ION 330 (and perhaps others) has 2 IEC958 channels
    mixer "$card" IEC958,0 on
    mixer "$card" IEC958,1 on

    # some ION2 has much more IEC958 channels ...
    mixer "$card" IEC958,2 on
    mixer "$card" IEC958,3 on

    # ASRock ION 330 has Master Front set to 0
    mixer "$card" 'Master Front' 100%

    # Shuttle XS35GT needs this too
    mixer "$card" 'Master',0 100% on

    # and this for various Fusion devices like Zotac ZBOX
    mixer "$card" 'Front',0 100% on

    # NVidia CK804 sound devices
    mixer "$card" 'IEC958 Playback AC97-SPSA' 100%

    # Allwinner H3 Analog
    mixer "$card" 'Line Out' 0db on

    # Allwinner A20 Analog
    mixer "$card" 'Power Amplifier' 0db
    mixer "$card" 'Power Amplifier DAC' on
    mixer "$card" 'Power Amplifier Mute' on

    # Allwinner A64 Analog
    mixer "$card" Headphone 0db on
    mixer "$card" 'AIF1 Slot 0 Digital DAC' on

    # Amlogic audio devices
    case $(dtsoc) in
      amlogic,g12* | amlogic,sm1)
        # AXG HDMI // Logic assumes TDMOUT_A is not present in device-tree when TDMOUT_B is used
        TDMOUT=$(awk '/TDMOUT/ && $2=="OUT" {print substr($1,length($1),1)}' /sys/firmware/devicetree/base/sound/audio-routing | sort | head -n 1)
        if [ "${TDMOUT}" = "A" ]; then
          mixer "$card" 'FRDDR_A SINK 1 SEL' 'OUT 0'
          mixer "$card" 'FRDDR_A SRC 1 EN' on
          mixer "$card" 'TDMOUT_A SRC SEL' 'IN 0'
          mixer "$card" 'TOHDMITX' on
          mixer "$card" 'TOHDMITX I2S SRC' 'I2S A'
        elif [ "${TDMOUT}" = "B" ]; then
          mixer "$card" 'FRDDR_A SINK 1 SEL' 'OUT 1'
          mixer "$card" 'FRDDR_A SRC 1 EN' on
          mixer "$card" 'TDMOUT_B SRC SEL' 'IN 0'
          mixer "$card" 'TOHDMITX' on
          mixer "$card" 'TOHDMITX I2S SRC' 'I2S B'
        fi
        # AXG S/PDIF
        SPDIFOUT=$(awk '/SPDIF/' /sys/firmware/devicetree/base/sound/audio-routing | sort | head -n 1)
        if [ -n "${SPDIFOUT}" ]; then
          mixer "$card" 'FRDDR_B SINK 1 SEL' 'OUT 3'
          mixer "$card" 'FRDDR_B SRC 1 EN' on
          mixer "$card" 'SPDIFOUT SRC SEL' 'IN 1'
          mixer "$card" 'SPDIFOUT Playback' on
        fi
        # AXG Headphone Jack
        ACODEC=$(awk '/ACODEC/' /sys/firmware/devicetree/base/sound/audio-routing | sort | head -n 1)
        if [ -n "${ACODEC}" ]; then
          mixer "$card" 'TOACODEC OUT EN' on
          mixer "$card" 'TOACODEC SRC' 'I2S ${TDMOUT}'
          mixer "$card" 'ACODEC Playback Switch' on
          mixer "$card" 'ACODEC Playback Channel Mode' Stereo
        fi
        ;;
      amlogic,meson-gx*)
        # AIU HDMI and S/PDIF
        mixer "$card" 'AIU HDMI CTRL SRC' 'I2S'
        mixer "$card" 'AIU SPDIF SRC SEL' 'SPDIF'
        # AIU ACODEC headphone jack
        mixer "$card" 'ACODEC' 80% on
        mixer "$card" 'AIU ACODEC SRC' 'I2S'
        mixer "$card" 'AIU ACODEC OUT EN' on
        ;;
    esac

    # ES8316 headphone jack
    mixer "$card" 'Right Headphone Mixer Right DAC' on
    mixer "$card" 'Left Headphone Mixer Left DAC' on
  fi

  exit 0
) &
