#!/bin/sh
# Copyright (C) Sierra Wireless Inc. Use of this work is subject to license.
#
# TI wireless wl18xx specific applications start or stop here
# TI WIFI IoT board is managed by SDIO/MMC bus. Some signals need to be set
# and managed before the SDIO/MMC module is inserted.
# TI WIFI IoT conflicts with others devices using the SDIO/MMC bus

export PATH=$PATH:/usr/bin:/bin:/usr/sbin:/sbin

ti_wifi_start() {
    # Add mdev rule for crda
    grep crda /etc/mdev.conf > /dev/null
    if [ $? -ne 0 ]; then
       (mount | grep -q " on /etc type ") || \
           (cp /etc/mdev.conf /tmp; mount -o bind /tmp/mdev.conf /etc/mdev.conf)
       echo "\$COUNTRY=.. root:root 0660 */sbin/crda" >> /etc/mdev.conf
    fi
    lsmod | grep wlcore >/dev/null
    if [ $? -ne 0 ]; then
       # Check if MMC/SDIO module is inserted. Because WIFI use SDIO/MMC bus
       # we need to remove the SDIO/MMC module
       #lsmod | grep msm_sdcc >/dev/null
       #if [ $? -eq 0 ]; then
          #grep -q mmcblk /proc/mounts
          #if [ $? -ne 0 ]; then
             #rmmod msm_sdcc
          #else
             #false
          #fi
          #if [ $? -ne 0 ]; then
             # Unable to remove. May be others devices use SDIO/MMC bus
             #echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
             #echo "Unable to remove the SDIO/MMC module... May be in use ?"
             #echo "Please, free all SDIO/MMC devices before using TI WIFI."
             #echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
             #exit 127
          #fi
       #fi

       ### mangOH green has 3 expanders
       # Set IOTO_RESET, GPIO#4/EXPANDER#3 - IOT0 Reset signal is disabled
       #gpioexp 3 4 output normal high >/dev/null 2>&1
       #if [ $? -ne 0 ]; then
       #if [1]; then
           echo "mangOH red board"

           # Clear SDIO_SEL, GPIO#9/EXPANDER#1 - Select the SDIO
           #gpioexp 1 9 output normal low >/dev/null || exit 127
           [ -d /sys/class/gpio/gpio4 ] || echo 4 >/sys/class/gpio/export
           echo out >/sys/class/gpio/gpio4/direction
           echo 0 >/sys/class/gpio/gpio4/value

           # Set Wifi  enable
           # Set IOT0_GPIO4 = 1 (WP GPIO8)
           [ -d /sys/class/gpio/gpio8 ] || echo 8 >/sys/class/gpio/export
           echo out >/sys/class/gpio/gpio8/direction
           echo 1 >/sys/class/gpio/gpio8/value
       #else
           #echo "mangOH green board"

           # Set IOT0_GPIO2 = 1 (WP GPIO33)
           #[ -d /sys/class/gpio/gpio33 ] || echo 33 >/sys/class/gpio/export
           #echo out >/sys/class/gpio/gpio33/direction
           #echo 1 >/sys/class/gpio/gpio33/value

           # Clear SDIO_SEL, GPIO#13/EXPANDER#1 - Select the SDIO
           #gpioexp 1 13 output normal low >/dev/null || exit 127
       #fi

       #modprobe msm_sdcc || exit 127

       modprobe wlcore || exit 127
       modprobe wlcore_sdio || exit 127
       modprobe wl18xx || exit 127
    fi
    sleep 5
    ifconfig -a | grep wlan0 >/dev/null
    if [ $? -ne 0 ] ; then
        echo "Failed to start TI wifi"; exit 127
    fi
    ifconfig wlan0 up >/dev/null
    if [ $? -ne 0 ] ; then
        echo "Failed to start TI wifi"; exit 127
    fi
}

ti_wifi_stop() {
    ifconfig | grep wlan0 >/dev/null
    if [ $? -eq 0 ]; then
       ifconfig wlan0 down
    fi
    lsmod | grep wlcore >/dev/null
    if [ $? -eq 0 ]; then
       rmmod wl18xx || exit 127
       rmmod wlcore_sdio || exit 127
       rmmod wlcore || exit 127
       rmmod mac80211 || exit 127
       rmmod cfg80211 || exit 127
       if `lsmod | grep '^compat '`; then
           rmmod compat || exit 127
       fi

       #rmmod msm-sdcc || exit 127

       # Clear IOTO_RESET, GPIO#4/EXPANDER#3 - IOT0 Reset signal is enabled
       #gpioexp 3 4 output normal low >/dev/null 2>&1
       #if [ $? -ne 0 ]; then
       #if [1]; then
           echo "mangOH red board"
           # Set IOT0_RESET = 1 (WP GPIO2)
           #echo 0 >/sys/class/gpio/gpio2/value
           # disable wifi enable
           echo 0 >/sys/class/gpio/gpio8/value

           # Clear SDIO_SEL, GPIO#9/EXPANDER#1 - Deselect the SDIO
           #gpioexp 1 9 output normal high >/dev/null || exit 127
           echo 1 >/sys/class/gpio/gpio4/value

           # Reset IOT0_GPIO2 = 0 (WP GPIO13)
           #echo 0 >/sys/class/gpio/gpio13/value
       #else
        #   echo "mangOH green board"
         #  # Set SDIO_SEL, GPIO#13/EXPANDER#1 - Deselect the SDIO
          # gpioexp 1 13 output normal high >/dev/null || exit 127

           # Reset IOT0_GPIO2 = 0 (WP GPIO33)
           #echo 0 >/sys/class/gpio/gpio33/value
       #fi

       # Insert MMC/SDIO module
       #modprobe msm_sdcc || exit 127
    fi
}

case "$1" in
    start)
        ti_wifi_start
        ;;
    stop)
        ti_wifi_stop
        ;;
    restart)
        ti_wifi_stop
        ti_wifi_start
        ;;
    *)
        exit 1
        ;;
esac

exit 0