#!/bin/sh
MODULE_PATH=/usr/lib/modules
. /etc/utils.sh

# RwFirmware mount /rw/firmware over /lib/firmware
# allows developers to test new mrvl firmware
check_rwfw_experiment()
{
  register_experiment RwFirmware

  if experiment RwFirmware; then
    local src=/lib/firmware
    local dst=/rw/firmware
    if [ ! -d "$dst" ]; then
      echo "RwFirmware: copying $src to $dst"
      mkdir -p "$dst"
      tar cf - -C "$src" . | tar xf - -C "$dst"
    fi
    if ! touch "$src/this_is_rw" 2>/dev/null; then
      echo "RwFirmware: mounting writable $dst on $src"
      mount -o bind "$dst" "$src"
    fi
  fi
}

rename_net_device()
{
  local old_dev=$1
  local new_dev=$2
  if [ -e /sys/class/net/$old_dev ]; then
    echo "Renaming $old_dev to $new_dev..."
    ip link set dev $old_dev down
    ip link set dev $old_dev name $new_dev
    ip link set dev $new_dev up
  fi
}

check_rwfw_experiment

start()
{
  if is-windcharger; then
    # Renames network devices for compatibility with optimus scripts.
    rename_net_device eth0 wan0
    rename_net_device eth1 lan0
  fi

  if is-spacecast; then
    # Loads sc100 driver.
    DVB_MAC=$(hnvram -qr MAC_ADDR)
    if [ -n "$DVB_MAC" ]; then
      modprobe dvb-usb-sc100 mac_addr="$DVB_MAC"
    else
      modprobe dvb-usb-sc100
    fi
  fi

  if is-ptp; then

    # Rename eth0 to craft0: This is the interface that the tech will connect to
    # when configuring the device. We want to keep this interface isolated from
    # customer traffic.
    # rename eth1 so it won't be put in the bridge automatically
    rename_net_device eth0 craft0
    rename_net_device eth1 sw0

    if [ -f /etc/hw_ver ]; then
      local CHIMERA_1_2A_HW_VER
      CHIMERA_1_2A_HW_VER=2
      hwver=$(hnvram -rq HW_VER)
      if [ "$hwver" = "$CHIMERA_1_2A_HW_VER" ]; then
        modprobe at24
        modprobe tmp421
        modprobe ltc2990

        echo 24c02 0x50 >/sys/bus/i2c/devices/i2c-3/new_device
        echo tmp423 0x4c >/sys/bus/i2c/devices/i2c-7/new_device
      fi
    fi
  fi

  if is-tv-box; then
    register_experiment SkipBluetoothWifi
    register_experiment BluetoothLast

    if experiment SkipBluetoothWifi; then
      exit 0
    fi
    done=/tmp/btlast_$(basename $0).done
    if experiment BluetoothLast && [ ! -f "$done" ]; then
      : > "$done"
      echo "$0: skipping start due to BluetoothLast experiment."
      exit 0
    fi

    [ -e "$MODULE_PATH/wl.ko" ] && insmod "$MODULE_PATH/wl.ko"

    # Set up BT, if present
    BT_MAC=$(hnvram -qr MAC_ADDR_BT)
    if [ -z "$BT_MAC" ]; then
      MAC=$(hnvram -qr MAC_ADDR)
      if [ -z "$MAC" ]; then
        echo "$0: ERROR: TV Box has no MAC_ADDR nor MAC_ADDR_BT"
        exit 1
      fi
      BT_MAC=$(mac_addr_increment "$MAC" 2)
    fi
    BT_MAC=$(echo "$BT_MAC" | sed 's/./\U&/g')
    echo "$BT_MAC" >/tmp/btmacaddress

    if [ "$(kernopt wifical)" = "1" ]; then
      # If we're trying to calibrate Wifi/BT, loading
      # the production driver disrupts the process, and we need the "primary
      # kernel" bluetooth core.
      insmod /lib/modules/$(uname -r)/kernel/net/bluetooth/bluetooth.ko
      modprobe -a bluetooth
    else  # Not trying to calibrate
      if [ "$(cat /etc/platform)" = GFHD100 ]; then
        # BCM20702 USB Bluetooth chip
        wl reset_bt_chip 1 2>&1
        sleep 1  # chip needs time to stabilize, else it will be flakey
      fi

      modprobe -a compat

      # If a backports bluetooth module is present, use it.
      backport="/lib/modules/$(uname -r)/backports/net/bluetooth/bluetooth.ko"
      [ -e "$backport" ] && insmod "$backport"

      modprobe -a bluetooth hidp hid-gfrm uhid
      modprobe btmrvl bdaddr_base="$BT_MAC"
      modprobe btmrvl_sdio
      if modinfo -F filename btbcm >/dev/null 2>&1; then
        modprobe btbcm bdaddr_base="$BT_MAC"
        modprobe btusb
      else
        modprobe btusb bdaddr_base="$BT_MAC"
      fi
    fi
  fi
}

stop()
{
  if is-tv-box; then
    rmmod btusb btbcm btmrvl_sdio btmrvl bluetooth hidp hid-gfrm uhid
    rmmod compat
    [ -e "$MODULE_PATH/wl.ko" ] && rmmod wl
  fi
}

case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  restart)
    stop
    start
    ;;
  *)
    echo "Usage: $0 {start|stop|restart}"
    exit 1
esac