#!/bin/sh

# enable VCS rail with OPERATION
# A side
i2cset -y 4 0x70 0x00 0x01 b
i2cset -y 4 0x70 0x02 0x1A b #respond to OPERATION
i2cset -y 4 0x70 0x00 0x00 b
# B side
i2cset -y 5 0x70 0x00 0x01 b
i2cset -y 5 0x70 0x02 0x1A b #respond to OPERATION
i2cset -y 5 0x70 0x00 0x00 b

# unbind ucd driver to permit i2cset
ucd_retries=5
ucd=

ucdpath="/sys/bus/i2c/drivers/ucd9000"
if [ -e $ucdpath ]
then
  ucd=`ls -1 $ucdpath | grep 64`
  if [ -n "$ucd" ]
  then
    echo $ucd > $ucdpath/unbind
  fi
fi


# re-enable VCS in system PGOOD
sleep 1
#SYSTEM_RESET_CONFIG
i2cset -y 11 0x64 0xD2 0x09 0xFF 0xFF 0x27 0x0A 0x00 0x06 0x00 0x00 0x02 i

# re-bind ucd driver only if we unbound it (i.e. ucd has been set with a value)
if [ -e $ucdpath -a -n "$ucd" ]; then
  j=0
  until [ $j -ge $ucd_retries ] || [ -e $ucdpath/$ucd ]; do
    j=$((j+1))
    echo $ucd > $ucdpath/bind || ret=$?
    if [ $j -gt 1 ]; then
      echo "rebinding UCD driver. Retry number $j"
      sleep 1
    fi
  done
  if [ ! -e $ucdpath/$ucd ]; then exit $ret; fi
fi