tools/testing/selftests/gpio/gpio-mockup.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 #exit status
   5 #1: Internal error
   6 #2: sysfs/debugfs not mount
   7 #3: insert module fail when gpio-mockup is a module.
   8 #4: Skip test including run as non-root user.
   9 #5: other reason.
  10
  11 SYSFS=
  12 GPIO_SYSFS=
  13 GPIO_DRV_SYSFS=
  14 DEBUGFS=
  15 GPIO_DEBUGFS=
  16 dev_type=
  17 module=
  18
  19 # Kselftest framework requirement - SKIP code is 4.
  20 ksft_skip=4
  21
  22 usage()
  23 {
  24         echo "Usage:"
  25         echo "$0 [-f] [-m name] [-t type]"
  26         echo "-f:  full test. It maybe conflict with existence gpio device."
  27         echo "-m:  module name, default name is gpio-mockup. It could also test"
  28         echo "     other gpio device."
  29         echo "-t:  interface type: chardev(char device) and sysfs(being"
  30         echo "     deprecated). The first one is default"
  31         echo ""
  32         echo "$0 -h"
  33         echo "This usage"
  34 }
  35
  36 prerequisite()
  37 {
  38         msg="skip all tests:"
  39         if [ $UID != 0 ]; then
  40                 echo $msg must be run as root >&2
  41                 exit $ksft_skip
  42         fi
  43         SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
  44         if [ ! -d "$SYSFS" ]; then
  45                 echo $msg sysfs is not mounted >&2
  46                 exit 2
  47         fi
  48         GPIO_SYSFS=`echo $SYSFS/class/gpio`
  49         GPIO_DRV_SYSFS=`echo $SYSFS/devices/platform/$module/gpio`
  50         DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
  51         if [ ! -d "$DEBUGFS" ]; then
  52                 echo $msg debugfs is not mounted >&2
  53                 exit 2
  54         fi
  55         GPIO_DEBUGFS=`echo $DEBUGFS/gpio`
  56         source gpio-mockup-sysfs.sh
  57 }
  58
  59 try_insert_module()
  60 {
  61         if [ -d "$GPIO_DRV_SYSFS" ]; then
  62                 echo "$GPIO_DRV_SYSFS exist. Skip insert module"
  63         else
  64                 modprobe -q $module $1
  65                 if [ X$? != X0 ]; then
  66                         echo $msg insmod $module failed >&2
  67                         exit 3
  68                 fi
  69         fi
  70 }
  71
  72 remove_module()
  73 {
  74         modprobe -r -q $module
  75 }
  76
  77 die()
  78 {
  79         remove_module
  80         exit 5
  81 }
  82
  83 test_chips()
  84 {
  85         if [ X$dev_type = Xsysfs ]; then
  86                 echo "WARNING: sysfs ABI of gpio is going to deprecated."
  87                 test_chips_sysfs $*
  88         else
  89                 $BASE/gpio-mockup-chardev $*
  90         fi
  91 }
  92
  93 gpio_test()
  94 {
  95         param=$1
  96         valid=$2
  97
  98         if [ X"$param" = X ]; then
  99                 die
 100         fi
 101         try_insert_module "gpio_mockup_ranges=$param"
 102         echo -n "GPIO $module test with ranges: <"
 103         echo "$param>: "
 104         printf "%-10s %s\n" $param
 105         test_chips $module $valid
 106         remove_module
 107 }
 108
 109 BASE=`dirname $0`
 110
 111 dev_type=
 112 TEMP=`getopt -o fhm:t: -n '$0' -- "$@"`
 113
 114 if [ "$?" != "0" ]; then
 115         echo "Parameter process failed, Terminating..." >&2
 116         exit 1
 117 fi
 118
 119 # Note the quotes around `$TEMP': they are essential!
 120 eval set -- "$TEMP"
 121
 122 while true; do
 123         case $1 in
 124         -f)
 125                 full_test=true
 126                 shift
 127                 ;;
 128         -h)
 129                 usage
 130                 exit
 131                 ;;
 132         -m)
 133                 module=$2
 134                 shift 2
 135                 ;;
 136         -t)
 137                 dev_type=$2
 138                 shift 2
 139                 ;;
 140         --)
 141                 shift
 142                 break
 143                 ;;
 144         *)
 145                 echo "Internal error!"
 146                 exit 1
 147                 ;;
 148         esac
 149 done
 150
 151 if [ X"$module" = X ]; then
 152         module="gpio-mockup"
 153 fi
 154
 155 if [ X$dev_type != Xsysfs ]; then
 156         dev_type="chardev"
 157 fi
 158
 159 prerequisite
 160
 161 echo "1.  Test dynamic allocation of gpio successful means insert gpiochip and"
 162 echo "    manipulate gpio pin successful"
 163 gpio_test "-1,32" true
 164 gpio_test "-1,32,-1,32" true
 165 gpio_test "-1,32,-1,32,-1,32" true
 166 if [ X$full_test = Xtrue ]; then
 167         gpio_test "-1,32,32,64" true
 168         gpio_test "-1,32,40,64,-1,5" true
 169         gpio_test "-1,32,32,64,-1,32" true
 170         gpio_test "0,32,32,64,-1,32,-1,32" true
 171         gpio_test "-1,32,-1,32,0,32,32,64" true
 172         echo "2.  Do basic test: successful means insert gpiochip and"
 173         echo "    manipulate gpio pin successful"
 174         gpio_test "0,32" true
 175         gpio_test "0,32,32,64" true
 176         gpio_test "0,32,40,64,64,96" true
 177 fi
 178 echo "3.  Error test: successful means insert gpiochip failed"
 179 echo "3.1 Test number of gpio overflow"
 180 #Currently: The max number of gpio(1024) is defined in arm architecture.
 181 gpio_test "-1,32,-1,1024" false
 182 if [ X$full_test = Xtrue ]; then
 183         echo "3.2 Test zero line of gpio"
 184         gpio_test "0,0" false
 185         echo "3.3 Test range overlap"
 186         echo "3.3.1 Test corner case"
 187         gpio_test "0,32,0,1" false
 188         gpio_test "0,32,32,64,32,40" false
 189         gpio_test "0,32,35,64,35,45" false
 190         gpio_test "0,32,31,32" false
 191         gpio_test "0,32,32,64,36,37" false
 192         gpio_test "0,32,35,64,34,36" false
 193         echo "3.3.2 Test inserting invalid second gpiochip"
 194         gpio_test "0,32,30,35" false
 195         gpio_test "0,32,1,5" false
 196         gpio_test "10,32,9,14" false
 197         gpio_test "10,32,30,35" false
 198         echo "3.3.3 Test others"
 199         gpio_test "0,32,40,56,39,45" false
 200         gpio_test "0,32,40,56,30,33" false
 201         gpio_test "0,32,40,56,30,41" false
 202         gpio_test "0,32,40,56,20,21" false
 203 fi
 204
 205 echo GPIO test PASS
 206