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|
#!/bin/sh
#
# irda-setup
#
# Initialize IrDA devices. Based on a Ubuntu init-script,
# but adapted to be called directly from udev.
#
# params: sir/fir <module> <options>
MODE="${1}"
shift
SYSFS="/sys"
RESOURCES="${SYSFS}${DEVPATH}/resources"
# Work out resource ranges, so we know which serial port to work with
PORTS=$(/bin/sed -n 's/io \(.*\)-.*/\1/p' "${RESOURCES}")
for PORT in ${PORTS}; do
case "${PORT}" in
0x3f8)
PORT="/dev/ttyS0"
break;;
0x2f8)
PORT="/dev/ttyS1"
break;;
0x3e8)
PORT="/dev/ttyS2"
break;;
0x2e8)
PORT="/dev/ttyS3"
break;;
default)
PORT="UNKNOWN";;
esac
done
# Handle FIR dongles
if [ "${MODE}" = "fir" ]; then
# The BIOS doesn't always activate the device. Prod it
echo disable > "${RESOURCES}"
echo activate > "${RESOURCES}"
UART="unknown";
if [ "${PORT}" != "UNKNOWN" ]; then
# We should attempt to disable the UART. However, we need to store
# it - there's a chance that things could still go horribly wrong
UART=$(/bin/setserial ${PORT} | /bin/sed 's/.*UART: \(.*\), Port.*/\1/')
/bin/setserial ${PORT} uart none
fi
# Load FIR module
/sbin/modprobe -sq "${@}" && exit 0 # OK
# Try to recover
[ "${UART}" != "undefined" ] && /bin/setserial ${PORT} uart ${UART}
fi
# We'll only have got here if we have SIR or the FIR module has failed
if [ "${PORT}" != "UNKNOWN" ]; then
# The BIOS doesn't always activate the device. Prod it
echo disable > "${RESOURCES}"
echo activate > "${RESOURCES}"
# The IRQ is not always set correctly, so try to deal with that
/bin/setserial ${PORT} $(/bin/grep -h '^irq ' "${RESOURCES}")
fi
exit 0 # never fail
|
