Your Name
83 lines
1.6 KiB
Bash
83 lines
1.6 KiB
Bash
#!/bin/bash
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# #########################################################
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# Script to run on witherspoon BMC to unbind/bind the ir35221
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# driver's devices
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status=0
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max_retries=3
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driver_path="/sys/bus/i2c/drivers/ir35221/"
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platform_path="/sys/devices/platform/ahb/ahb:apb/ahb:apb:bus@1e78a000/"
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unbind_driver () {
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echo "$1" > $driver_path/unbind
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}
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bind_driver () {
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device=$1
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tries=0
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until [ $tries -ge $max_retries ]; do
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tries=$((tries+1))
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ret=0
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# shellcheck disable=SC2320
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echo "$device" > $driver_path/bind || ret=$?
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if [ $ret -ne 0 ]; then
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echo "VRM $1 bind failed. Try $tries"
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sleep 1
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else
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tries=$((max_retries+1))
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fi
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done
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#Script will return a nonzero value if any binds fail.
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if [ "$ret" -ne 0 ]; then
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status=$ret
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fi
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}
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if [ "$1" = "unbind" ]
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then
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if [ -e $driver_path/4-0070 ]
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then
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unbind_driver "4-0070"
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fi
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if [ -e $driver_path/4-0071 ]
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then
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unbind_driver "4-0071"
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fi
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if [ -e $driver_path/5-0070 ]
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then
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unbind_driver "5-0070"
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fi
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if [ -e $driver_path/5-0071 ]
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then
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unbind_driver "5-0071"
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fi
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elif [ "$1" = "bind" ]
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then
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if [ -e $platform_path/1e78a140.i2c-bus/i2c-4/4-0070 ]
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then
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bind_driver "4-0070"
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fi
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if [ -e $platform_path/1e78a140.i2c-bus/i2c-4/4-0071 ]
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then
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bind_driver "4-0071"
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fi
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if [ -e $platform_path/1e78a180.i2c-bus/i2c-5/5-0070 ]
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then
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bind_driver "5-0070"
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fi
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if [ -e $platform_path/1e78a180.i2c-bus/i2c-5/5-0071 ]
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then
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bind_driver "5-0071"
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fi
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fi
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exit "$status"
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