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#!/bin/bash
if ! grep -qs purism,librem5 /sys/firmware/devicetree/base/compatible; then
echo "Not a Librem5. Skipping."
exit 0
fi
# modules to be loaded when LSM9DS1 becomes active ordered how to load them
MODULES=( 'st_lsm6dsx' 'st_lsm6dsx_spi' 'st_lsm6dsx_i2c' 'st_magn' 'st_magn_i2c')
# modules already loaded in the order needed to unload them
LOADED=( `lsmod | grep -E "^st_lsm6dsx|^st_magn" | cut -f1 -d' ' | sort -r` )
if [[ `cat /sys/devices/platform/rfkill-hks/rfkill/*/hard | uniq` == '1' ]]; then
# all hks are enabled, LSM9DS1 is disabled
# unload any st_lsm6dsx module that is loaded in the correct order
for M in ${LOADED[@]}; do
rmmod "$M"
done
# unbind vcnl4000 driver if bound
if [ -h /sys/bus/i2c/drivers/vcnl4000/1-0060 ]; then
echo 1-0060 > "/sys/bus/i2c/drivers/vcnl4000/unbind"
fi
else
# any hks is disabled, LSM9DS1 is enabled
# load any module from $MODULES not yet loaded
for M in ${MODULES[@]}; do
# iter over indices of $LOADED...
for L in "${!LOADED[@]}"; do
# ...to check whether the module to be loaded $M
# is already loaded (and thereby in array LOADED)
if [[ "${LOADED[$L]}" == "$M" ]]; then
# if $M already is loaded try next M out of MODULES
break
fi
done
# if not yet loaded, load $M
modprobe "$M"
done
# bind vcnl4000 driver if unbound
if ! [ -h /sys/bus/i2c/drivers/vcnl4000/1-0060 ]; then
echo 1-0060 > "/sys/bus/i2c/drivers/vcnl4000/bind"
fi
fi
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