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#!/bin/bash
# #########################################################
# Script to run on witherspoon BMC to unbind/bind the ir35221
# driver's devices
status=0
max_retries=3
driver_path="/sys/bus/i2c/drivers/ir35221/"
platform_path="/sys/devices/platform/ahb/ahb:apb/ahb:apb:i2c@1e78a000/"
unbind_driver () {
echo $1 > $driver_path/unbind
}
bind_driver () {
device=$1
tries=0
until [ $tries -ge $max_retries ]; do
tries=$((tries+1))
ret=0
echo $device > $driver_path/bind || ret=$?
if [ $ret -ne 0 ]; then
echo "VRM $1 bind failed. Try $tries"
sleep 1
else
tries=$((max_retries+1))
fi
done
#Script will return a nonzero value if any binds fail.
if [ $ret -ne 0 ]; then
status=$ret
fi
}
if [ "$1" = "unbind" ]
then
if [ -e $driver_path/4-0070 ]
then
unbind_driver "4-0070"
fi
if [ -e $driver_path/4-0071 ]
then
unbind_driver "4-0071"
fi
if [ -e $driver_path/5-0070 ]
then
unbind_driver "5-0070"
fi
if [ -e $driver_path/5-0071 ]
then
unbind_driver "5-0071"
fi
elif [ "$1" = "bind" ]
then
if [ -e $platform_path/1e78a140.i2c-bus/i2c-4/4-0070 ]
then
bind_driver "4-0070"
fi
if [ -e $platform_path/1e78a140.i2c-bus/i2c-4/4-0071 ]
then
bind_driver "4-0071"
fi
if [ -e $platform_path/1e78a180.i2c-bus/i2c-5/5-0070 ]
then
bind_driver "5-0070"
fi
if [ -e $platform_path/1e78a180.i2c-bus/i2c-5/5-0071 ]
then
bind_driver "5-0071"
fi
fi
exit $status
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