#!/system/bin/sh
# Copyright (c) 2009-2010, 2012, Code Aurora Forum. All rights reserved.
#
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#       documentation and/or other materials provided with the distribution.
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#       permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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LOG_TAG="qcom-bt-wlan-coex"
LOG_NAME="${0}:"

coex_pid=""
ath_wlan_supported=`getprop wlan.driver.ath`

loge ()
{
  /system/bin/log -t $LOG_TAG -p e "$LOG_NAME $@"
}

logi ()
{
  /system/bin/log -t $LOG_TAG -p i "$LOG_NAME $@"
}

failed ()
{
  loge "$1: exit code $2"
  exit $2
}

start_coex ()
{
  case "$ath_wlan_supported" in
      "2")
       echo "ATH WLAN Chip ID AR6004 is enabled"
       /system/bin/abtfilt -d -z -n -m -a -w wlan0 &
      ;;
      "1")
       echo "ATH WLAN Chip ID is enabled"
       # Must have -d -z -n -v -s -w wlan0 parameters for atheros btfilter.
       /system/bin/abtfilt -d -z -n -v -q -s -w wlan0 &
      ;;
      "0")
       echo "WCN WLAN Chip ID is enabled"
       # Must have -o turned on to avoid daemon (otherwise we cannot get pid)
       /system/bin/btwlancoex -o $opt_flags &
      ;;
      *)
       echo "NO WLAN Chip ID is enabled, so enabling ATH as default"
       # Must have -d -z -n -v -s -w wlan0 parameters for atheros btfilter.
       /system/bin/abtfilt -d -z -n -v -q -s -w wlan0 &
      ;;
  esac
  coex_pid=$!
  logi "start_coex: pid = $coex_pid"
}

kill_coex ()
{
  logi "kill_coex: pid = $coex_pid"
  kill -TERM $coex_pid
  # this shell doesn't exit now -- wait returns for normal exit
}

# mimic coex options parsing -- maybe a waste of effort
USAGE="${0} [-o] [-c] [-r] [-i] [-h]"

while getopts "ocrih" f
do
  case $f in
  o | c | r | i | h)  opt_flags="$opt_flags -$f" ;;
  \?)     echo $USAGE; exit 1;;
  esac
done

# init does SIGTERM on ctl.stop for service
trap "kill_coex" TERM INT

#Selectively start coex module
target=`getprop ro.board.platform`

if [ "$target" == "msm8960" ] && [ "$ath_wlan_supported" != "2" ]; then
     logi "btwlancoex/abtfilt is not needed"
else
     # Build settings may not produce the coex executable
     if ls /system/bin/btwlancoex || ls /system/bin/abtfilt
     then
         start_coex
         wait $coex_pid
         logi "Coex stopped"
     else
         logi "btwlancoex/abtfilt not available"
     fi
fi
exit 0