summaryrefslogtreecommitdiffstats
path: root/tools/testing/selftests/gpio/gpio-mockup.sh
blob: 7f35b9880485648eaa9a8709b88c3b06fa88adab (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
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