SPI SWE: clear any pending boot-time interrupts in spi_init() Charger plug/unplug hw logic in the Iota ABB has no built-in debouncing, thus electrical contact bounce on the charging power connection interface produces a lot of charger plug/unplug interrupts. When we boot in charging mode (charging power present at boot time and is presumably the cause of Switch-ON), some bounce may occur between the initial Iota Switch-ON action and Calypso firmware booting. By clearing any accumulated ITSTATREG interrupts on boot, we prevent these pre-boot interrupts from generating charger plug/unplug events to FCHG, which would upset smooth from-boot charging.

#!/bin/sh

tmpfile=/tmp/fc_hg_id$$

hg id -in > $tmpfile 2> /dev/null
if [ $? != 0 ]
then
	rm -f $tmpfile
	echo unknown
	exit 0
fi

read global local < $tmpfile
rm -f $tmpfile

global_noplus=`echo $global | tr -d +`
local_noplus=`echo $local | tr -d +`

if [ "$global" = "$global_noplus" -a "$local" = "$local_noplus" ]
then
	dirty=
else
	dirty=-dirty
fi

echo $local_noplus:$global_noplus$dirty