1 2 # SPDX-License-Identifier: GPL-2.0 3 is_consistent() 4 { 5 val= 6 7 active_low_sysfs=`cat $GPIO_SYSFS/gpio$nr/active_low` 8 val_sysfs=`cat $GPIO_SYSFS/gpio$nr/value` 9 dir_sysfs=`cat $GPIO_SYSFS/gpio$nr/direction` 10 11 gpio_this_debugfs=`cat $GPIO_DEBUGFS |grep "gpio-$nr" | sed "s/(.*)//g"` 12 dir_debugfs=`echo $gpio_this_debugfs | awk '{print $2}'` 13 val_debugfs=`echo $gpio_this_debugfs | awk '{print $3}'` 14 if [ $val_debugfs = "lo" ]; then 15 val=0 16 elif [ $val_debugfs = "hi" ]; then 17 val=1 18 fi 19 20 if [ $active_low_sysfs = "1" ]; then 21 if [ $val = "0" ]; then 22 val="1" 23 else 24 val="0" 25 fi 26 fi 27 28 if [ $val_sysfs = $val ] && [ $dir_sysfs = $dir_debugfs ]; then 29 echo -n "." 30 else 31 echo "test fail, exit" 32 die 33 fi 34 } 35 36 test_pin_logic() 37 { 38 nr=$1 39 direction=$2 40 active_low=$3 41 value=$4 42 43 echo $direction > $GPIO_SYSFS/gpio$nr/direction 44 echo $active_low > $GPIO_SYSFS/gpio$nr/active_low 45 if [ $direction = "out" ]; then 46 echo $value > $GPIO_SYSFS/gpio$nr/value 47 fi 48 is_consistent $nr 49 } 50 51 test_one_pin() 52 { 53 nr=$1 54 55 echo -n "test pin<$nr>" 56 57 echo $nr > $GPIO_SYSFS/export 2>/dev/null 58 59 if [ X$? != X0 ]; then 60 echo "test GPIO pin $nr failed" 61 die 62 fi 63 64 #"Checking if the sysfs is consistent with debugfs: " 65 is_consistent $nr 66 67 #"Checking the logic of active_low: " 68 test_pin_logic $nr out 1 1 69 test_pin_logic $nr out 1 0 70 test_pin_logic $nr out 0 1 71 test_pin_logic $nr out 0 0 72 73 #"Checking the logic of direction: " 74 test_pin_logic $nr in 1 1 75 test_pin_logic $nr out 1 0 76 test_pin_logic $nr low 0 1 77 test_pin_logic $nr high 0 0 78 79 echo $nr > $GPIO_SYSFS/unexport 80 81 echo "successful" 82 } 83 84 test_one_pin_fail() 85 { 86 nr=$1 87 88 echo $nr > $GPIO_SYSFS/export 2>/dev/null 89 90 if [ X$? != X0 ]; then 91 echo "test invalid pin $nr successful" 92 else 93 echo "test invalid pin $nr failed" 94 echo $nr > $GPIO_SYSFS/unexport 2>/dev/null 95 die 96 fi 97 } 98 99 list_chip() 100 { 101 echo `ls -d $GPIO_DRV_SYSFS/gpiochip* 2>/dev/null` 102 } 103 104 test_chip() 105 { 106 chip=$1 107 name=`basename $chip` 108 base=`cat $chip/base` 109 ngpio=`cat $chip/ngpio` 110 printf "%-10s %-5s %-5s\n" $name $base $ngpio 111 if [ $ngpio = "0" ]; then 112 echo "number of gpio is zero is not allowed". 113 fi 114 test_one_pin $base 115 test_one_pin $(($base + $ngpio - 1)) 116 test_one_pin $((( RANDOM % $ngpio ) + $base )) 117 } 118 119 test_chips_sysfs() 120 { 121 gpiochip=`list_chip $module` 122 if [ X"$gpiochip" = X ]; then 123 if [ X"$valid" = Xfalse ]; then 124 echo "successful" 125 else 126 echo "fail" 127 die 128 fi 129 else 130 for chip in $gpiochip; do 131 test_chip $chip 132 done 133 fi 134 } 135 136
