is_consistent()
{
val=
active_low_sysfs=`cat $GPIO_SYSFS/gpio$nr/active_low`
val_sysfs=`cat $GPIO_SYSFS/gpio$nr/value`
dir_sysfs=`cat $GPIO_SYSFS/gpio$nr/direction`
gpio_this_debugfs=`cat $GPIO_DEBUGFS |grep "gpio-$nr" | sed "s/(.*)//g"`
dir_debugfs=`echo $gpio_this_debugfs | awk '{print $2}'`
val_debugfs=`echo $gpio_this_debugfs | awk '{print $3}'`
if [ $val_debugfs = "lo" ]; then
val=0
elif [ $val_debugfs = "hi" ]; then
val=1
fi
if [ $active_low_sysfs = "1" ]; then
if [ $val = "0" ]; then
val="1"
else
val="0"
fi
fi
if [ $val_sysfs = $val ] && [ $dir_sysfs = $dir_debugfs ]; then
echo -n "."
else
echo "test fail, exit"
die
fi
}
test_pin_logic()
{
nr=$1
direction=$2
active_low=$3
value=$4
echo $direction > $GPIO_SYSFS/gpio$nr/direction
echo $active_low > $GPIO_SYSFS/gpio$nr/active_low
if [ $direction = "out" ]; then
echo $value > $GPIO_SYSFS/gpio$nr/value
fi
is_consistent $nr
}
test_one_pin()
{
nr=$1
echo -n "test pin<$nr>"
echo $nr > $GPIO_SYSFS/export 2>/dev/null
if [ X$? != X0 ]; then
echo "test GPIO pin $nr failed"
die
fi
#"Checking if the sysfs is consistent with debugfs: "
is_consistent $nr
#"Checking the logic of active_low: "
test_pin_logic $nr out 1 1
test_pin_logic $nr out 1 0
test_pin_logic $nr out 0 1
test_pin_logic $nr out 0 0
#"Checking the logic of direction: "
test_pin_logic $nr in 1 1
test_pin_logic $nr out 1 0
test_pin_logic $nr low 0 1
test_pin_logic $nr high 0 0
echo $nr > $GPIO_SYSFS/unexport
echo "successful"
}
test_one_pin_fail()
{
nr=$1
echo $nr > $GPIO_SYSFS/export 2>/dev/null
if [ X$? != X0 ]; then
echo "test invalid pin $nr successful"
else
echo "test invalid pin $nr failed"
echo $nr > $GPIO_SYSFS/unexport 2>/dev/null
die
fi
}
list_chip()
{
echo `ls -d $GPIO_DRV_SYSFS/gpiochip* 2>/dev/null`
}
test_chip()
{
chip=$1
name=`basename $chip`
base=`cat $chip/base`
ngpio=`cat $chip/ngpio`
printf "%-10s %-5s %-5s\n" $name $base $ngpio
if [ $ngpio = "0" ]; then
echo "number of gpio is zero is not allowed".
fi
test_one_pin $base
test_one_pin $(($base + $ngpio - 1))
test_one_pin $((( RANDOM % $ngpio ) + $base ))
}
test_chips_sysfs()
{
gpiochip=`list_chip $module`
if [ X"$gpiochip" = X ]; then
if [ X"$valid" = Xfalse ]; then
echo "successful"
else
echo "fail"
die
fi
else
for chip in $gpiochip; do
test_chip $chip
done
fi
}
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