selftests/gpio/gpio-sim.sh

2 # SPDX-License-Identifier: GPL-2.0
6 CONFIGFS_DIR="/sys/kernel/config/gpio-sim"
7 MODULE="gpio-sim"
26 		if [ "$BANK" = "live" -o "$BANK" = "dev_name" ]; then
30 		LINES=`ls $CONFIGFS_DIR/$CHIP/$BANK/ | grep -E ^line`
32 			for LINE in $LINES; do
33 				if [ -e $CONFIGFS_DIR/$CHIP/$BANK/$LINE/hog ]; then
34 					rmdir $CONFIGFS_DIR/$CHIP/$BANK/$LINE/hog || \
38 				rmdir $CONFIGFS_DIR/$CHIP/$BANK/$LINE || \
39 					fail "Unable to remove the line"
83 	local NAME=$4
84 	local LINE_DIR=$CONFIGFS_DIR/$CHIP/$BANK/line$OFFSET
86 	test -d $LINE_DIR || mkdir $LINE_DIR
87 	echo $NAME > $LINE_DIR/name || fail "Unable to set the line name"
114 		fail "unable to read the chip name from configfs"
121 		fail "unable to read the device name from configfs"
128 	$BASE_DIR/gpio-chip-info /dev/`configfs_chip_name $CHIP $BANK` num-lines || \
136 	$BASE_DIR/gpio-chip-info /dev/`configfs_chip_name $CHIP $BANK` label || \
145 	$BASE_DIR/gpio-line-name /dev/`configfs_chip_name $CHIP $BANK` $OFFSET || \
146 		fail "unable to read the line name from the character device"
158 	echo $PULL > $SYSFS_PATH || fail "Unable to set line pull in sysfs"
161 # Load the gpio-sim module. This will pull in configfs if needed too.
162 modprobe gpio-sim || skip "unable to load the gpio-sim module"
165 	if [ "$IDX" -eq "5" ]; then
169 	mountpoint -q /sys/kernel/config && break
180 echo "1.1. Chip name is communicated to user"
184 test -n `cat $CONFIGFS_DIR/chip/bank/chip_name` || fail "chip_name doesn't work"
195 echo "1.3. Device name is communicated to user"
199 test -n `cat $CONFIGFS_DIR/chip/dev_name` || fail "dev_name doesn't work"
235 test -z "`cat $CONFIGFS_DIR/chip/bank/label`" || fail "label is not empty"
239 echo "2.5. Line names can be configured"
246 test "`get_line_name chip bank 0`" = "foo" || fail "line name is incorrect"
247 test "`get_line_name chip bank 2`" = "bar" || fail "line name is incorrect"
251 echo "2.6. Line config can remain unused if offset is greater than number of lines"
257 test "`get_line_name chip bank 0`" = "" || fail "line name is incorrect"
258 test "`get_line_name chip bank 1`" = "" || fail "line name is incorrect"
262 echo "2.7. Line configfs directory names are sanitized"
266 	fail "invalid configfs line name accepted"
268 	fail "invalid configfs line name accepted"
294 echo "2.10. Can't create line items when chip is live"
298 mkdir $CONFIGFS_DIR/chip/bank/line0 2> /dev/null && fail "Creating line item should fail"
302 echo "2.11. Probe errors are propagated to user-space"
327 mkdir -p $CONFIGFS_DIR/chip/bank/line4/hog
329 $BASE_DIR/gpio-mockup-cdev -s 1 /dev/`configfs_chip_name chip bank` 4 2> /dev/null && \
330 	fail "Setting the value of a hogged line shouldn't succeed"
341 sysfs_set_pull chip bank 0 pull-up
342 $BASE_DIR/gpio-mockup-cdev /dev/`configfs_chip_name chip bank` 0
344 sysfs_set_pull chip bank 0 pull-down
345 $BASE_DIR/gpio-mockup-cdev /dev/`configfs_chip_name chip bank` 1
358 test `cat $SYSFS_PATH` = "pull-down" || fail "reading the pull failed"
359 sysfs_set_pull chip bank 0 pull-up
360 test `cat $SYSFS_PATH` = "pull-up" || fail "reading the pull failed"
398 $BASE_DIR/gpio-mockup-cdev -s 1 /dev/`configfs_chip_name chip bank` 0 &
413 $BASE_DIR/gpio-mockup-cdev -b pull-up /dev/`configfs_chip_name chip bank` 0