selftests/gpio/gpio-sim.sh

2 # SPDX-License-Identifier: GPL-2.0
6 CONFIGFS_DIR="/sys/kernel/config/gpio-sim"
7 MODULE="gpio-sim"
15 skip() {  function
17 	echo "GPIO $MODULE test SKIP"
26 		if [ "$BANK" = "live" -o "$BANK" = "dev_name" ]; then
30 		LINES=`ls $CONFIGFS_DIR/$CHIP/$BANK/ | grep -E ^line`
33 				if [ -e $CONFIGFS_DIR/$CHIP/$BANK/$LINE/hog ]; then
92 	test -d $LINE_DIR || mkdir $LINE_DIR
127 	$BASE_DIR/gpio-chip-info /dev/`configfs_chip_name $CHIP $BANK` num-lines || \
135 	$BASE_DIR/gpio-chip-info /dev/`configfs_chip_name $CHIP $BANK` label || \
144 	$BASE_DIR/gpio-line-name /dev/`configfs_chip_name $CHIP $BANK` $OFFSET || \
160 # Load the gpio-sim module. This will pull in configfs if needed too.
161 modprobe gpio-sim || skip "unable to load the gpio-sim module"
162 # Make sure configfs is mounted at /sys/kernel/config. Wait a bit if needed.
164 	if [ "$IDX" -eq "5" ]; then
165 		skip "configfs not mounted at /sys/kernel/config"
168 	mountpoint -q /sys/kernel/config && break
183 test -n `cat $CONFIGFS_DIR/chip/bank/chip_name` || fail "chip_name doesn't work"
197 test -n `cat $CONFIGFS_DIR/chip/dev_name` || fail "dev_name doesn't work"
229 test -z "`cat $CONFIGFS_DIR/chip/bank/label`" || fail "label is not empty"
243 echo "2.6. Line config can remain unused if offset is greater than number of lines"
290 echo "2.11. Probe errors are propagated to user-space"
315 mkdir -p $CONFIGFS_DIR/chip/bank/line4/hog
317 $BASE_DIR/gpio-mockup-cdev -s 1 /dev/`configfs_chip_name chip bank` 4 2> /dev/null && \
328 sysfs_set_pull chip bank 0 pull-up
329 $BASE_DIR/gpio-mockup-cdev /dev/`configfs_chip_name chip bank` 0
331 sysfs_set_pull chip bank 0 pull-down
332 $BASE_DIR/gpio-mockup-cdev /dev/`configfs_chip_name chip bank` 1
344 test `cat $SYSFS_PATH` = "pull-down" || fail "reading the pull failed"
345 sysfs_set_pull chip bank 0 pull-up
346 test `cat $SYSFS_PATH` = "pull-up" || fail "reading the pull failed"
381 $BASE_DIR/gpio-mockup-cdev -s 1 /dev/`configfs_chip_name chip bank` 0 &
395 $BASE_DIR/gpio-mockup-cdev -b pull-up /dev/`configfs_chip_name chip bank` 0