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-rwxr-xr-xtools/testing/selftests/gpio/gpio-mockup.sh206
1 files changed, 206 insertions, 0 deletions
diff --git a/tools/testing/selftests/gpio/gpio-mockup.sh b/tools/testing/selftests/gpio/gpio-mockup.sh
new file mode 100755
index 000000000..7f35b9880
--- /dev/null
+++ b/tools/testing/selftests/gpio/gpio-mockup.sh
@@ -0,0 +1,206 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+#exit status
+#1: Internal error
+#2: sysfs/debugfs not mount
+#3: insert module fail when gpio-mockup is a module.
+#4: Skip test including run as non-root user.
+#5: other reason.
+
+SYSFS=
+GPIO_SYSFS=
+GPIO_DRV_SYSFS=
+DEBUGFS=
+GPIO_DEBUGFS=
+dev_type=
+module=
+
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+usage()
+{
+ echo "Usage:"
+ echo "$0 [-f] [-m name] [-t type]"
+ echo "-f: full test. It maybe conflict with existence gpio device."
+ echo "-m: module name, default name is gpio-mockup. It could also test"
+ echo " other gpio device."
+ echo "-t: interface type: chardev(char device) and sysfs(being"
+ echo " deprecated). The first one is default"
+ echo ""
+ echo "$0 -h"
+ echo "This usage"
+}
+
+prerequisite()
+{
+ msg="skip all tests:"
+ if [ $UID != 0 ]; then
+ echo $msg must be run as root >&2
+ exit $ksft_skip
+ fi
+ SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
+ if [ ! -d "$SYSFS" ]; then
+ echo $msg sysfs is not mounted >&2
+ exit 2
+ fi
+ GPIO_SYSFS=`echo $SYSFS/class/gpio`
+ GPIO_DRV_SYSFS=`echo $SYSFS/devices/platform/$module/gpio`
+ DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
+ if [ ! -d "$DEBUGFS" ]; then
+ echo $msg debugfs is not mounted >&2
+ exit 2
+ fi
+ GPIO_DEBUGFS=`echo $DEBUGFS/gpio`
+ source gpio-mockup-sysfs.sh
+}
+
+try_insert_module()
+{
+ if [ -d "$GPIO_DRV_SYSFS" ]; then
+ echo "$GPIO_DRV_SYSFS exist. Skip insert module"
+ else
+ modprobe -q $module $1
+ if [ X$? != X0 ]; then
+ echo $msg insmod $module failed >&2
+ exit 3
+ fi
+ fi
+}
+
+remove_module()
+{
+ modprobe -r -q $module
+}
+
+die()
+{
+ remove_module
+ exit 5
+}
+
+test_chips()
+{
+ if [ X$dev_type = Xsysfs ]; then
+ echo "WARNING: sysfs ABI of gpio is going to deprecated."
+ test_chips_sysfs $*
+ else
+ $BASE/gpio-mockup-chardev $*
+ fi
+}
+
+gpio_test()
+{
+ param=$1
+ valid=$2
+
+ if [ X"$param" = X ]; then
+ die
+ fi
+ try_insert_module "gpio_mockup_ranges=$param"
+ echo -n "GPIO $module test with ranges: <"
+ echo "$param>: "
+ printf "%-10s %s\n" $param
+ test_chips $module $valid
+ remove_module
+}
+
+BASE=`dirname $0`
+
+dev_type=
+TEMP=`getopt -o fhm:t: -n '$0' -- "$@"`
+
+if [ "$?" != "0" ]; then
+ echo "Parameter process failed, Terminating..." >&2
+ exit 1
+fi
+
+# Note the quotes around `$TEMP': they are essential!
+eval set -- "$TEMP"
+
+while true; do
+ case $1 in
+ -f)
+ full_test=true
+ shift
+ ;;
+ -h)
+ usage
+ exit
+ ;;
+ -m)
+ module=$2
+ shift 2
+ ;;
+ -t)
+ dev_type=$2
+ shift 2
+ ;;
+ --)
+ shift
+ break
+ ;;
+ *)
+ echo "Internal error!"
+ exit 1
+ ;;
+ esac
+done
+
+if [ X"$module" = X ]; then
+ module="gpio-mockup"
+fi
+
+if [ X$dev_type != Xsysfs ]; then
+ dev_type="chardev"
+fi
+
+prerequisite
+
+echo "1. Test dynamic allocation of gpio successful means insert gpiochip and"
+echo " manipulate gpio pin successful"
+gpio_test "-1,32" true
+gpio_test "-1,32,-1,32" true
+gpio_test "-1,32,-1,32,-1,32" true
+if [ X$full_test = Xtrue ]; then
+ gpio_test "-1,32,32,64" true
+ gpio_test "-1,32,40,64,-1,5" true
+ gpio_test "-1,32,32,64,-1,32" true
+ gpio_test "0,32,32,64,-1,32,-1,32" true
+ gpio_test "-1,32,-1,32,0,32,32,64" true
+ echo "2. Do basic test: successful means insert gpiochip and"
+ echo " manipulate gpio pin successful"
+ gpio_test "0,32" true
+ gpio_test "0,32,32,64" true
+ gpio_test "0,32,40,64,64,96" true
+fi
+echo "3. Error test: successful means insert gpiochip failed"
+echo "3.1 Test number of gpio overflow"
+#Currently: The max number of gpio(1024) is defined in arm architecture.
+gpio_test "-1,32,-1,1024" false
+if [ X$full_test = Xtrue ]; then
+ echo "3.2 Test zero line of gpio"
+ gpio_test "0,0" false
+ echo "3.3 Test range overlap"
+ echo "3.3.1 Test corner case"
+ gpio_test "0,32,0,1" false
+ gpio_test "0,32,32,64,32,40" false
+ gpio_test "0,32,35,64,35,45" false
+ gpio_test "0,32,31,32" false
+ gpio_test "0,32,32,64,36,37" false
+ gpio_test "0,32,35,64,34,36" false
+ echo "3.3.2 Test inserting invalid second gpiochip"
+ gpio_test "0,32,30,35" false
+ gpio_test "0,32,1,5" false
+ gpio_test "10,32,9,14" false
+ gpio_test "10,32,30,35" false
+ echo "3.3.3 Test others"
+ gpio_test "0,32,40,56,39,45" false
+ gpio_test "0,32,40,56,30,33" false
+ gpio_test "0,32,40,56,30,41" false
+ gpio_test "0,32,40,56,20,21" false
+fi
+
+echo GPIO test PASS
+