#!/bin/sh

SYS_CLASS_GPIO=/sys/class/gpio

AMP_EN_GPIO_NUM=147
AMP_EN_GPIO=${SYS_CLASS_GPIO}/gpio${AMP_EN_GPIO_NUM}

AMP_AGC1_GPIO_NUM=217
AMP_AGC1_GPIO=${SYS_CLASS_GPIO}/gpio${AMP_AGC1_GPIO_NUM}

AMP_AGC2_GPIO_NUM=216
AMP_AGC2_GPIO=${SYS_CLASS_GPIO}/gpio${AMP_AGC2_GPIO_NUM}

if [ "$1" == "1" ]; then
	if [ "$#" != "6" ]; then
		echo "Go to the Home~~!"
		exit
	fi

	echo "Play alphaVaud, Turn on Amp!"

	if [ -d $AMP_AGC1_GPIO ]; then
		echo ${AMP_AGC1_GPIO_NUM} > ${SYS_CLASS_GPIO}/unexport
	fi
	if [ -d $AMP_AGC2_GPIO ]; then
		echo ${AMP_AGC2_GPIO_NUM} > ${SYS_CLASS_GPIO}/unexport
	fi
	if [ -d $AMP_EN_GPIO ]; then
		echo ${AMP_EN_GPIO_NUM} > ${SYS_CLASS_GPIO}/unexport
	fi

	echo ${AMP_AGC1_GPIO_NUM} > ${SYS_CLASS_GPIO}/export
	echo ${AMP_AGC2_GPIO_NUM} > ${SYS_CLASS_GPIO}/export
	echo ${AMP_EN_GPIO_NUM} > ${SYS_CLASS_GPIO}/export

	echo out > ${AMP_AGC1_GPIO}/direction
	echo out > ${AMP_AGC2_GPIO}/direction
	echo out > ${AMP_EN_GPIO}/direction

	echo
	amixer -c alphaVaud sset 'Left PGA Mixer Mic2L' off
	echo
	amixer -c alphaVaud sset 'Right PGA Mixer Mic2R' off
	echo
	amixer -c alphaVaud sset 'Left PGA Mixer Line1L' off
	echo
	amixer -c alphaVaud sset 'Right PGA Mixer Line1R' off
	echo
	amixer -c alphaVaud sset 'PGA' 0

	echo
	amixer -c alphaVaud sset 'HP' off
	echo
	amixer -c alphaVaud sset 'Left HP Mixer DACL1' off
	echo
	amixer -c alphaVaud sset 'Right HP Mixer DACR1' off
	echo
	amixer -c alphaVaud sset 'HP DAC' 0

	echo
	amixer -c alphaVaud sset 'HPCOM' off
	echo
	amixer -c alphaVaud sset 'Left HPCOM Mixer DACL1' off
	echo
	amixer -c alphaVaud sset 'Right HPCOM Mixer DACR1' off
	echo
	amixer -c alphaVaud sset 'HPCOM DAC' 0

	echo
	amixer -c alphaVaud sset PCM $2
	echo
	amixer -c alphaVaud sset 'Line' on
	echo
	amixer -c alphaVaud sset 'Left Line Mixer DACL1' on
	echo
	amixer -c alphaVaud sset 'Right Line Mixer DACR1' on
	echo
	amixer -c alphaVaud sset 'Line DAC' $3
	echo

	if [ "$4" == "1" ]; then
		echo 1 > ${AMP_AGC1_GPIO}/value
		echo "AGC1=1"
	else
		echo 0 > ${AMP_AGC1_GPIO}/value
		echo "AGC1=0"
	fi
	if [ "$5" == "1" ]; then
		echo 1 > ${AMP_AGC2_GPIO}/value
		echo "AGC2=1"
	else
		echo 0 > ${AMP_AGC2_GPIO}/value
		echo "AGC2=0"
	fi
	echo 1 > ${AMP_EN_GPIO}/value

	echo
	aplay -Dplughw:alphaVaud,0 $6
	#if [ "$6" == "1" ]; then
	#	aplay -Dplughw:alphaVaud,0 /home/root/V_test/sound/SineWaveMinus16.wav
	#else
	#	aplay -Dplughw:alphaVaud,0 /home/root/V_test/sound/kids-playing-1.wav
	#fi
	echo

elif [ "$1" == "0" ]; then
	echo "Turn off DAC, Turn off Amp!"

	if [ -d $AMP_EN_GPIO ]; then
		echo 0 > ${AMP_EN_GPIO}/value
		echo ${AMP_EN_GPIO_NUM} > ${SYS_CLASS_GPIO}/unexport
	fi
	if [ -d $AMP_AGC1_GPIO ]; then
		echo ${AMP_AGC1_GPIO_NUM} > ${SYS_CLASS_GPIO}/unexport
	fi
	if [ -d $AMP_AGC2_GPIO ]; then
		echo ${AMP_AGC2_GPIO_NUM} > ${SYS_CLASS_GPIO}/unexport
	fi

	echo
	amixer -c alphaVaud sset 'Line' off
	echo
	amixer -c alphaVaud sset 'Left Line Mixer DACL1' off
	echo
	amixer -c alphaVaud sset 'Right Line Mixer DACR1' off
	echo

else
	echo "Go to the Home~~!"
fi