Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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
+