Clickx 115/Clickx 115.iso/software/tools/windows/tails-i386-0.16.iso/live/filesystem.squashfs/usr/share/laptop-mode-tools/modules/wireless-ipw-power

Text File | 2012-05-20 | 4.8 KB | 156 lines

#! /bin/sh
#
# Laptop mode tools module: power saving for IPW3945, IPW2200 and IPW2100 using
#                           the Intel ipw drivers.
#
#
# This script relies upon the name of the driver.
#
# Original source: http://ubuntuforums.org/showthread.php?t=419772

if [ x$CONTROL_IPW_POWER = x1 ] || [ x$ENABLE_AUTO_MODULES = x1 -a x$CONTROL_IPW_POWER = xauto ]; then

    # Provide defaults for config file settings
    [ "$IPW3945_AC_POWER" ]   || IPW3945_AC_POWER=6
    [ "$IPW3945_BATT_POWER" ] || IPW3945_BATT_POWER=7
    [ "$IPW2100_AC_POWER" ]   || IPW3945_AC_POWER=0
    [ "$IPW2100_BATT_POWER" ] || IPW3945_BATT_POWER=5

    I3945_DRIVERNAME=ipw3945
    I2200_DRIVERNAME=ipw2200
    I2100_DRIVERNAME=ipw2100

    # find executables
    if [ -x /sbin/iwpriv ] ; then
        IWPRIV=/sbin/iwpriv
    elif [ -x /usr/sbin/iwpriv ] ; then
        IWPRIV=/usr/sbin/iwpriv
    else
        log "VERBOSE" "iwpriv is not installed"
    fi
    if [ -x /sbin/iwconfig ] ; then
        IWCONFIG=/sbin/iwconfig
    elif [ -x /usr/sbin/iwconfig ] ; then
        IWCONFIG=/usr/sbin/iwconfig
    else
        log "VERBOSE" "iwconfig is not installed"
    fi

    SET_I3945_AC_PARMS="set_power $IPW3945_AC_POWER"
    SET_I3945_BAT_PARMS="set_power $IPW3945_BATT_POWER"

    SET_I2200_AC_PARMS="power off"
    SET_I2200_BAT_PARMS="power on"

    # Note the fact that we're setting "power on" on both AC and battery.
    # This is due to the fact that the second statement will have no effect
    # if we turn power management off completely, and some laptops will
    # reportedly get very hot if you turn off power management on the
    # IPW2100.
    SET_I2100_AC_PARMS_1="power on"
    SET_I2100_BAT_PARMS_1="power on"
    SET_I2100_AC_PARMS_2="set_power $IPW2100_AC_POWER"
    SET_I2100_BAT_PARMS_2="set_power $IPW2100_BATT_POWER"


    #
    # Find all the wireless devices using the supplied driver names.
    # Place the interface names on the list WIFI_IFNAMES.
    #
    findWifiIfsByDriver() {
        local DEVICE;
        local LINK_TARGET;
                local ENABLED;
        WIFI_IFNAMES=""

        for DEVICE in /sys/class/net/*; do
            if [ -d $DEVICE/wireless -a -h $DEVICE/device/driver ]; then
                # See if the driver for $DEVICE matches the supplied one by checking the link to
                # the driver.
                LINK_TARGET=`readlink $DEVICE/device/driver`
                LINK_TARGET=${LINK_TARGET##*/}
                                ENABLED=`cat $DEVICE/device/enable`

                if [ $ENABLED -eq 1 -a "$LINK_TARGET" = "$1" ]; then
                    # add the interface name to the list
                            WIFI_IFNAMES="$WIFI_IFNAMES ${DEVICE##*/}"
                                else
                                        log "VERBOSE" "$DEVICE doesn't seem to be enabled. Radio Switched off?";
                fi
                        else
                                # LP: #369113
                                # Kernel's 2.6.29 and above have been reported to be missing
                                # the $DEVICE/wireless folder.
                                dev=`basename $DEVICE`

                # Inverting return values, we get "0" for wireless device,
                # and "1" for non-wireless device.
                ($IWCONFIG $dev 2>&1 | grep -q "no wireless extensions.") && ret=1 || ret=0
                                if [ "$ret" = "0" ]; then
                    # add the interface name to the list
                            WIFI_IFNAMES="$WIFI_IFNAMES ${DEVICE##*/}"
                                fi
            fi
        done
    }


    #
    # Set all the adaptors using the supplied driver into the supplied
    # power saving mode
    #
    # $1 - driver name
    # $2 - power command
    # $3 - power command arguments
    #
    setWifiPwrSave () {
        local DEVICE;
        findWifiIfsByDriver $1;

        for DEVICE in $WIFI_IFNAMES; do
            log "VERBOSE" "Wireless power saving: $2 $DEVICE $3"
            $2 $DEVICE $3
        done
    }

    intel3945_BatPwrSave () {
        setWifiPwrSave "$I3945_DRIVERNAME" "$IWPRIV" "$SET_I3945_BAT_PARMS"
    }

    intel3945_AcPwrSave () {
        setWifiPwrSave "$I3945_DRIVERNAME" "$IWPRIV" "$SET_I3945_AC_PARMS"
    }

    intel2200_BatPwrSave () {
        setWifiPwrSave "$I2200_DRIVERNAME" "$IWCONFIG" "$SET_I2200_BAT_PARMS"
    }

    intel2200_AcPwrSave () {
        setWifiPwrSave "$I2200_DRIVERNAME" "$IWCONFIG" "$SET_I2200_AC_PARMS"
    }

    intel2100_BatPwrSave () {
        setWifiPwrSave "$I2100_DRIVERNAME" "$IWCONFIG" "$SET_I2100_BAT_PARMS_1"
        setWifiPwrSave "$I2100_DRIVERNAME" "$IWPRIV" "$SET_I2100_BAT_PARMS_2"
    }

    intel2100_AcPwrSave () {
        setWifiPwrSave "$I2100_DRIVERNAME" "$IWCONFIG" "$SET_I2100_AC_PARMS_1"
        setWifiPwrSave "$I2100_DRIVERNAME" "$IWPRIV" "$SET_I2100_BAT_PARMS_2"
    }


    if [ $ON_AC -eq 1 ] ; then
        [ -d /sys/module/$I3945_DRIVERNAME ] && intel3945_AcPwrSave
        [ -d /sys/module/$I2200_DRIVERNAME ] && intel2200_AcPwrSave
        [ -d /sys/module/$I2100_DRIVERNAME ] && intel2100_AcPwrSave
    else
        [ -d /sys/module/$I3945_DRIVERNAME ] && intel3945_BatPwrSave
        [ -d /sys/module/$I2200_DRIVERNAME ] && intel2200_BatPwrSave
        [ -d /sys/module/$I2100_DRIVERNAME ] && intel2100_BatPwrSave
    fi
else
    log "VERBOSE" "Intel IPW Wireless power setting is disabled."
fi