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# SPDX-License-Identifier: GPL-2.0
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is_consistent()
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{
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val=
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active_low_sysfs=`cat $GPIO_SYSFS/gpio$nr/active_low`
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val_sysfs=`cat $GPIO_SYSFS/gpio$nr/value`
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dir_sysfs=`cat $GPIO_SYSFS/gpio$nr/direction`
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gpio_this_debugfs=`cat $GPIO_DEBUGFS |grep "gpio-$nr" | sed "s/(.*)//g"`
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dir_debugfs=`echo $gpio_this_debugfs | awk '{print $2}'`
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val_debugfs=`echo $gpio_this_debugfs | awk '{print $3}'`
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if [ $val_debugfs = "lo" ]; then
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val=0
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elif [ $val_debugfs = "hi" ]; then
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val=1
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fi
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if [ $active_low_sysfs = "1" ]; then
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if [ $val = "0" ]; then
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val="1"
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else
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val="0"
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fi
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fi
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if [ $val_sysfs = $val ] && [ $dir_sysfs = $dir_debugfs ]; then
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echo -n "."
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else
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echo "test fail, exit"
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die
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fi
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}
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test_pin_logic()
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{
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nr=$1
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direction=$2
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active_low=$3
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value=$4
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echo $direction > $GPIO_SYSFS/gpio$nr/direction
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echo $active_low > $GPIO_SYSFS/gpio$nr/active_low
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if [ $direction = "out" ]; then
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echo $value > $GPIO_SYSFS/gpio$nr/value
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fi
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is_consistent $nr
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}
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test_one_pin()
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{
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nr=$1
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echo -n "test pin<$nr>"
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echo $nr > $GPIO_SYSFS/export 2>/dev/null
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if [ X$? != X0 ]; then
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echo "test GPIO pin $nr failed"
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die
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fi
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#"Checking if the sysfs is consistent with debugfs: "
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is_consistent $nr
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#"Checking the logic of active_low: "
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test_pin_logic $nr out 1 1
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test_pin_logic $nr out 1 0
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test_pin_logic $nr out 0 1
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test_pin_logic $nr out 0 0
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#"Checking the logic of direction: "
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test_pin_logic $nr in 1 1
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test_pin_logic $nr out 1 0
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test_pin_logic $nr low 0 1
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test_pin_logic $nr high 0 0
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echo $nr > $GPIO_SYSFS/unexport
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echo "successful"
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}
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test_one_pin_fail()
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{
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nr=$1
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echo $nr > $GPIO_SYSFS/export 2>/dev/null
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if [ X$? != X0 ]; then
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echo "test invalid pin $nr successful"
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else
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echo "test invalid pin $nr failed"
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echo $nr > $GPIO_SYSFS/unexport 2>/dev/null
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die
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fi
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}
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list_chip()
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{
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echo `ls -d $GPIO_DRV_SYSFS/gpiochip* 2>/dev/null`
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}
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test_chip()
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{
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chip=$1
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name=`basename $chip`
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base=`cat $chip/base`
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ngpio=`cat $chip/ngpio`
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printf "%-10s %-5s %-5s\n" $name $base $ngpio
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if [ $ngpio = "0" ]; then
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echo "number of gpio is zero is not allowed".
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fi
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test_one_pin $base
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test_one_pin $(($base + $ngpio - 1))
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test_one_pin $((( RANDOM % $ngpio ) + $base ))
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}
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test_chips_sysfs()
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{
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gpiochip=`list_chip $module`
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if [ X"$gpiochip" = X ]; then
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if [ X"$valid" = Xfalse ]; then
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echo "successful"
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else
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echo "fail"
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die
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fi
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else
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for chip in $gpiochip; do
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test_chip $chip
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done
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fi
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}
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