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#!/bin/bash
# (C) Rudolf Marek <r.marek@assembler.cz>,
# Jean Delvare <khali@linux-fr.org>
#
# Thanks Jean Delvare and Oliver Dreier <oliver@dinux.de> for testing.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# as published by the Free Software Foundation
#
# Supports the following Intel ICH chipsets:
# PCI ID
# ICH 8086:2410
# ICH2 8086:2440
# ICH2-M 8086:244C
# ICH3 8086:2480
# ICH3-M 8086:248C
# ICH4 8086:24C0
# ICH4-M 8086:24CC
# ICH5 8086:24D0
pcibus="/sys/bus/pci/slots"
device="00:1f"
if [ "$UID" -ne 0 ] ; then
echo "You need to be root to run this script!"
exit 252
fi
smbus=`lspci -n -s $device.3 | grep -i '0c05: *8086'`
if [ -n "$smbus" ] ; then
echo "ICH SMBus is already there!"
lspci -s $device.3
exit
fi
intel=`lspci -n -s $device.0 | grep -i '8086:24[148CD][0C]'`
if [ -z "$intel" ] ; then
echo "Not for your chipset - Intel (ICH) only"
echo "Supported: ICH, ICH2, ICH2-M, ICH3, ICH3-M, ICH4, ICH4-M, ICH5"
exit 255;
fi
modprobe fakephp &> /dev/null
if [ ! -d "$pcibus" ] ; then
echo "You need the fake PCI hotplug driver! (fakephp.ko and 2.6 kernel)"
exit 255;
fi
echo "Enabling SMBus PCI device ..."
newval=$( printf '%x' $((0x$(setpci -s $device.0 f2.w) & 0xfff7)))
setpci -s $device.0 f2.w=$newval
echo "Rescanning the bus ..."
echo 1 > $pcibus/0000:$device.0/power 2>/dev/null
if [ ! -d "$pcibus/0000:$device.3" ] ; then
echo "Failed to enable the SMBUS"
exit 253;
fi
if [ ! -d "/sys/bus/pci/drivers/i801_smbus" ] ; then
echo "Loading i2c-i801 ..."
modprobe i2c-i801
if [ $? -ne 0 ] ; then
exit 251
fi
fi
lspci -s $device.3
echo "Done!"
echo "Remember: system suspend/resume is no longer safe to use."
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