#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#exit status
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#1: Internal error
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#2: sysfs/debugfs not mount
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#3: insert module fail when gpio-mockup is a module.
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#4: Skip test including run as non-root user.
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#5: other reason.
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SYSFS=
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GPIO_SYSFS=
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GPIO_DRV_SYSFS=
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DEBUGFS=
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GPIO_DEBUGFS=
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dev_type=
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module=
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# Kselftest framework requirement - SKIP code is 4.
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ksft_skip=4
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usage()
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{
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echo "Usage:"
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echo "$0 [-f] [-m name] [-t type]"
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echo "-f: full test. It maybe conflict with existence gpio device."
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echo "-m: module name, default name is gpio-mockup. It could also test"
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echo " other gpio device."
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echo "-t: interface type: chardev(char device) and sysfs(being"
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echo " deprecated). The first one is default"
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echo ""
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echo "$0 -h"
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echo "This usage"
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}
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prerequisite()
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{
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msg="skip all tests:"
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if [ $UID != 0 ]; then
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echo $msg must be run as root >&2
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exit $ksft_skip
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fi
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SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
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if [ ! -d "$SYSFS" ]; then
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echo $msg sysfs is not mounted >&2
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exit 2
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fi
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GPIO_SYSFS=`echo $SYSFS/class/gpio`
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GPIO_DRV_SYSFS=`echo $SYSFS/devices/platform/$module/gpio`
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DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
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if [ ! -d "$DEBUGFS" ]; then
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echo $msg debugfs is not mounted >&2
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exit 2
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fi
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GPIO_DEBUGFS=`echo $DEBUGFS/gpio`
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source gpio-mockup-sysfs.sh
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}
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try_insert_module()
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{
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if [ -d "$GPIO_DRV_SYSFS" ]; then
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echo "$GPIO_DRV_SYSFS exist. Skip insert module"
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else
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modprobe -q $module $1
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if [ X$? != X0 ]; then
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echo $msg insmod $module failed >&2
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exit 3
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fi
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fi
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}
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remove_module()
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{
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modprobe -r -q $module
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}
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die()
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{
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remove_module
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exit 5
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}
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test_chips()
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{
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if [ X$dev_type = Xsysfs ]; then
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echo "WARNING: sysfs ABI of gpio is going to deprecated."
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test_chips_sysfs $*
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else
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$BASE/gpio-mockup-chardev $*
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fi
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}
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gpio_test()
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{
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param=$1
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valid=$2
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if [ X"$param" = X ]; then
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die
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fi
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try_insert_module "gpio_mockup_ranges=$param"
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echo -n "GPIO $module test with ranges: <"
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echo "$param>: "
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printf "%-10s %s\n" $param
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test_chips $module $valid
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remove_module
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}
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BASE=`dirname $0`
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dev_type=
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TEMP=`getopt -o fhm:t: -n '$0' -- "$@"`
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if [ "$?" != "0" ]; then
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echo "Parameter process failed, Terminating..." >&2
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exit 1
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fi
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# Note the quotes around `$TEMP': they are essential!
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eval set -- "$TEMP"
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while true; do
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case $1 in
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-f)
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full_test=true
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shift
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;;
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-h)
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usage
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exit
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;;
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-m)
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module=$2
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shift 2
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;;
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-t)
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dev_type=$2
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shift 2
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;;
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--)
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shift
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break
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;;
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*)
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echo "Internal error!"
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exit 1
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;;
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esac
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done
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if [ X"$module" = X ]; then
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module="gpio-mockup"
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fi
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if [ X$dev_type != Xsysfs ]; then
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dev_type="chardev"
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fi
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prerequisite
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echo "1. Test dynamic allocation of gpio successful means insert gpiochip and"
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echo " manipulate gpio pin successful"
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gpio_test "-1,32" true
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gpio_test "-1,32,-1,32" true
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gpio_test "-1,32,-1,32,-1,32" true
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if [ X$full_test = Xtrue ]; then
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gpio_test "-1,32,32,64" true
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gpio_test "-1,32,40,64,-1,5" true
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gpio_test "-1,32,32,64,-1,32" true
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gpio_test "0,32,32,64,-1,32,-1,32" true
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gpio_test "-1,32,-1,32,0,32,32,64" true
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echo "2. Do basic test: successful means insert gpiochip and"
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echo " manipulate gpio pin successful"
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gpio_test "0,32" true
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gpio_test "0,32,32,64" true
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gpio_test "0,32,40,64,64,96" true
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fi
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echo "3. Error test: successful means insert gpiochip failed"
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echo "3.1 Test number of gpio overflow"
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#Currently: The max number of gpio(1024) is defined in arm architecture.
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gpio_test "-1,32,-1,1024" false
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if [ X$full_test = Xtrue ]; then
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echo "3.2 Test zero line of gpio"
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gpio_test "0,0" false
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echo "3.3 Test range overlap"
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echo "3.3.1 Test corner case"
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gpio_test "0,32,0,1" false
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gpio_test "0,32,32,64,32,40" false
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gpio_test "0,32,35,64,35,45" false
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gpio_test "0,32,31,32" false
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gpio_test "0,32,32,64,36,37" false
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gpio_test "0,32,35,64,34,36" false
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echo "3.3.2 Test inserting invalid second gpiochip"
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gpio_test "0,32,30,35" false
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gpio_test "0,32,1,5" false
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gpio_test "10,32,9,14" false
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gpio_test "10,32,30,35" false
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echo "3.3.3 Test others"
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gpio_test "0,32,40,56,39,45" false
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gpio_test "0,32,40,56,30,33" false
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gpio_test "0,32,40,56,30,41" false
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gpio_test "0,32,40,56,20,21" false
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fi
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echo GPIO test PASS
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