m2_g2_fs/etc/scripts/audio_init.sh

#!/bin/sh
#
# initial audio set.
#

ajust_snd_params()
{
    times=3
    volume_out=`sysconf ${volctrl_path} get volume volume_out`

    # Set output volume
    case ${volume_out} in
        9)
            value_out=99
            ;;
        8)
            value_out=95
            ;;
        7)
            value_out=92
            ;;
        6)
            value_out=90
            ;;
        5)
            value_out=88
            ;;
        4)
            value_out=81
            ;;
        3)
            value_out=66
            ;;
        2)
            value_out=47
            ;;
        1)
            value_out=19
            ;;
        0)
            value_out=0
            ;;
    esac


    while [ 1 ]
    do
        /usr/bin/amixer -q sset 'Master',0 ${value_out}

        times=`expr $times - 1`

        if [ ${times} -le 0 ];then
            break;
        fi
    done
}

volctrl_path="/oem/etc/volctrl.conf"

EQ_STAT="`ps|grep 'eq_drc_process'|grep -v grep`"
if [ -z "${EQ_STAT}" ];then
        /usr/bin/eq_drc_process > /dev/null 2>&1 &
fi

volume_in=`sysconf ${volctrl_path} get volume volume_in`

case ${volume_in} in
    9)
        value_in=31
        ;;
    8)
        value_in=30
        ;;
    7)
        value_in=29
        ;;
    6)
        value_in=28
        ;;
    5)
        value_in=27
        ;;
    4)
        value_in=26
        ;;
    3)
        value_in=24
        ;;
    2)
        value_in=23
        ;;
    1)
        value_in=21
        ;;
    0)
        value_in=0
        ;;
esac

if [ ${value_in} = 0 ];then
    /usr/bin/amixer -q sset 'ADC MIC Group 3 Left' 'Mute'
    /usr/bin/amixer -q sset 'ADC MIC Group 3 Right' 'Mute'
else
    /usr/bin/amixer -q sset 'ADC MIC Group 3 Left' 'Work'
    /usr/bin/amixer -q sset 'ADC MIC Group 3 Right' 'Work'
    /usr/bin/amixer -q sset 'ADC ALC Group 3 Left' ${value_in}
    /usr/bin/amixer -q sset 'ADC ALC Group 3 Right' ${value_in}
fi

/usr/bin/amixer -q sset 'DAC HPMIX Left' 1
/usr/bin/amixer -q sset 'DAC LINEOUT Left' 2
/usr/bin/amixer -q sset 'DAC HPMIX Right' 1
/usr/bin/amixer -q sset 'DAC LINEOUT Right' 2

ajust_snd_params&

/usr/bin/amixer -q sset 'ADC MIC Group 1 Left' 'Work'

/usr/bin/amixer -q cset numid=11,iface=MIXER,name='ADC Main MICBIAS' 1
/usr/bin/amixer -q cset numid=10,iface=MIXER,name='ADC MICBIAS Voltage' 5
/usr/bin/amixer -q cset numid=12,iface=MIXER,name='ADC MICBIAS1' off
/usr/bin/amixer -q cset numid=13,iface=MIXER,name='ADC MICBIAS2' on

exit 0