#!/bin/sh

case "$1" in
	a)
		dspcntr="0x70180"
		dspsurf="0x7019c"
		;;
	b)
		dspcntr="0x71180"
		dspsurf="0x7119c"
		;;
	c)
		dspcntr="0x72180"
		dspsurf="0x7219c"
		;;
	*)
		echo "Usage $0 [a|b|c] [enable|disable]"
		exit 1
		;;
esac

cntr=`intel_reg_read $dspcntr | gawk '{ print $3 }'`
surf=`intel_reg_read $dspsurf | gawk '{ print $3 }'`

case "$2" in
	enable)
		cntr=`echo "$cntr" | gawk '{ printf "0x%x", or(strtonum($1), 0x01000000) }'`
		;;
	disable)
		cntr=`echo "$cntr" | gawk '{ printf "0x%x", and(strtonum($1), compl(0x1000000)) }'`
		;;
	*)
		echo "Usage $0 [a|b|c] [enable|disable]"
		exit 1
		;;
esac

intel_reg_write $dspcntr $cntr
intel_reg_write $dspsurf $surf