The GPIO mockup selftests are overly complicated with separate implementations of the tests for sysfs and cdev uAPI, and with the cdev implementation being dependent on tools/gpio and libmount.

Rework the test implementation to provide a common test suite with a simplified pluggable uAPI interface. The cdev implementation utilises the GPIO uAPI directly to remove the dependence on tools/gpio. The simplified uAPI interface removes the need for any file system mount checks in C, and so removes the dependence on libmount.

The rework also fixes the sysfs test implementation which has been broken since the device created in the multiple gpiochip case was split into separate devices.

Fixes: commit 8a39f597bcfd ("gpio: mockup: rework device probing") Signed-off-by: Kent Gibson warthog618@gmail.com --- tools/testing/selftests/gpio/Makefile | 26 +- .../testing/selftests/gpio/gpio-mockup-cdev.c | 139 ++++++ .../selftests/gpio/gpio-mockup-sysfs.sh | 168 ++----- tools/testing/selftests/gpio/gpio-mockup.sh | 462 ++++++++++++------ 4 files changed, 505 insertions(+), 290 deletions(-) create mode 100644 tools/testing/selftests/gpio/gpio-mockup-cdev.c

diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile index 32bdc978a711..e4363c64d40d 100644 --- a/tools/testing/selftests/gpio/Makefile +++ b/tools/testing/selftests/gpio/Makefile @@ -1,32 +1,8 @@ # SPDX-License-Identifier: GPL-2.0

-VAR_CFLAGS := $(shell pkg-config --cflags mount 2>/dev/null) -VAR_LDLIBS := $(shell pkg-config --libs mount 2>/dev/null) -ifeq ($(VAR_LDLIBS),) -VAR_LDLIBS := -lmount -I/usr/include/libmount -endif - -CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/ $(VAR_CFLAGS) -LDLIBS += $(VAR_LDLIBS) - TEST_PROGS := gpio-mockup.sh TEST_FILES := gpio-mockup-sysfs.sh -TEST_PROGS_EXTENDED := gpio-mockup-chardev - -GPIODIR := $(realpath ../../../gpio) -GPIOOBJ := gpio-utils.o +TEST_GEN_PROGS_EXTENDED := gpio-mockup-cdev

-all: $(TEST_PROGS_EXTENDED) - -override define CLEAN - $(RM) $(TEST_PROGS_EXTENDED) - $(MAKE) -C $(GPIODIR) OUTPUT=$(GPIODIR)/ clean -endef - -KSFT_KHDR_INSTALL := 1 include ../lib.mk

-$(TEST_PROGS_EXTENDED): $(GPIODIR)/$(GPIOOBJ) - -$(GPIODIR)/$(GPIOOBJ): - $(MAKE) OUTPUT=$(GPIODIR)/ -C $(GPIODIR) diff --git a/tools/testing/selftests/gpio/gpio-mockup-cdev.c b/tools/testing/selftests/gpio/gpio-mockup-cdev.c new file mode 100644 index 000000000000..3bfd876a8b6a --- /dev/null +++ b/tools/testing/selftests/gpio/gpio-mockup-cdev.c @@ -0,0 +1,139 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * GPIO mockup cdev test helper + * + * Copyright (C) 2020 Kent Gibson + */ + +#include <errno.h> +#include <fcntl.h> +#include <linux/gpio.h> +#include <signal.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> +#include <unistd.h> + +#define CONSUMER "gpio-mockup-cdev" + +static int request_line_v1(int cfd, unsigned int offset, + uint32_t flags, unsigned int val) +{ + struct gpiohandle_request req; + int ret; + + memset(&req, 0, sizeof(req)); + req.lines = 1; + req.lineoffsets[0] = offset; + req.flags = flags; + strcpy(req.consumer_label, CONSUMER); + if (flags & GPIOHANDLE_REQUEST_OUTPUT) + req.default_values[0] = val; + + ret = ioctl(cfd, GPIO_GET_LINEHANDLE_IOCTL, &req); + if (ret == -1) + return -errno; + return req.fd; +} + +static int get_value_v1(int lfd) +{ + struct gpiohandle_data vals; + int ret; + + memset(&vals, 0, sizeof(vals)); + ret = ioctl(lfd, GPIOHANDLE_GET_LINE_VALUES_IOCTL, &vals); + if (ret == -1) + return -errno; + return vals.values[0]; +} + +static void usage(char *prog) +{ + printf("Usage: %s [-l] [-b <bias>] [-s <value>] [-u <uAPI>] <gpiochip> <offset>\n", prog); + printf(" -b: set line bias to one of pull-down, pull-up, disabled\n"); + printf(" (default is to leave bias unchanged):\n"); + printf(" -l: set line active low (default is active high)\n"); + printf(" -s: set line value (default is to get line value)\n"); + exit(-1); +} + +static int wait_signal(void) +{ + int sig; + sigset_t wset; + + sigemptyset(&wset); + sigaddset(&wset, SIGHUP); + sigaddset(&wset, SIGINT); + sigaddset(&wset, SIGTERM); + sigwait(&wset, &sig); + + return sig; +} + +int main(int argc, char *argv[]) +{ + char *chip; + int opt, ret, cfd, lfd; + unsigned int offset, val; + uint32_t flags_v1; + + ret = 0; + flags_v1 = GPIOHANDLE_REQUEST_INPUT; + + while ((opt = getopt(argc, argv, "lb:s:u:")) != -1) { + switch (opt) { + case 'l': + flags_v1 |= GPIOHANDLE_REQUEST_ACTIVE_LOW; + break; + case 'b': + if (strcmp("pull-up", optarg) == 0) + flags_v1 |= GPIOHANDLE_REQUEST_BIAS_PULL_UP; + else if (strcmp("pull-down", optarg) == 0) + flags_v1 |= GPIOHANDLE_REQUEST_BIAS_PULL_DOWN; + else if (strcmp("disabled", optarg) == 0) + flags_v1 |= GPIOHANDLE_REQUEST_BIAS_DISABLE; + break; + case 's': + val = atoi(optarg); + flags_v1 &= ~GPIOHANDLE_REQUEST_INPUT; + flags_v1 |= GPIOHANDLE_REQUEST_OUTPUT; + break; + default: + usage(argv[0]); + } + } + + if (argc < optind + 2) + usage(argv[0]); + + chip = argv[optind]; + offset = atoi(argv[optind+1]); + + cfd = open(chip, 0); + if (cfd == -1) { + fprintf(stderr, "Failed to open %s: %s\n", chip, strerror(errno)); + return -errno; + } + + lfd = request_line_v1(cfd, offset, flags_v1, val); + + close(cfd); + + if (lfd < 0) { + fprintf(stderr, "Failed to request %s:%d: %s\n", chip, offset, strerror(-lfd)); + return lfd; + } + + if (flags_v1 & GPIOHANDLE_REQUEST_OUTPUT) + wait_signal(); + else + ret = get_value_v1(lfd); + + close(lfd); + + return ret; +} diff --git a/tools/testing/selftests/gpio/gpio-mockup-sysfs.sh b/tools/testing/selftests/gpio/gpio-mockup-sysfs.sh index dd269d877562..8ec99b4b12e5 100755 --- a/tools/testing/selftests/gpio/gpio-mockup-sysfs.sh +++ b/tools/testing/selftests/gpio/gpio-mockup-sysfs.sh @@ -1,135 +1,71 @@

# SPDX-License-Identifier: GPL-2.0 -is_consistent() -{ - val= - - active_low_sysfs=`cat $GPIO_SYSFS/gpio$nr/active_low` - val_sysfs=`cat $GPIO_SYSFS/gpio$nr/value` - dir_sysfs=`cat $GPIO_SYSFS/gpio$nr/direction` - - gpio_this_debugfs=`cat $GPIO_DEBUGFS |grep "gpio-$nr" | sed "s/(.*)//g"` - dir_debugfs=`echo $gpio_this_debugfs | awk '{print $2}'` - val_debugfs=`echo $gpio_this_debugfs | awk '{print $3}'` - if [ $val_debugfs = "lo" ]; then - val=0 - elif [ $val_debugfs = "hi" ]; then - val=1 - fi - - if [ $active_low_sysfs = "1" ]; then - if [ $val = "0" ]; then - val="1" - else - val="0" - fi - fi - - if [ $val_sysfs = $val ] && [ $dir_sysfs = $dir_debugfs ]; then - echo -n "." - else - echo "test fail, exit" - die - fi -} - -test_pin_logic() -{ - nr=$1 - direction=$2 - active_low=$3 - value=$4 - - echo $direction > $GPIO_SYSFS/gpio$nr/direction - echo $active_low > $GPIO_SYSFS/gpio$nr/active_low - if [ $direction = "out" ]; then - echo $value > $GPIO_SYSFS/gpio$nr/value - fi - is_consistent $nr -} - -test_one_pin() -{ - nr=$1 - - echo -n "test pin<$nr>" - - echo $nr > $GPIO_SYSFS/export 2>/dev/null - - if [ X$? != X0 ]; then - echo "test GPIO pin $nr failed" - die - fi

- #"Checking if the sysfs is consistent with debugfs: " - is_consistent $nr +# Overrides functions in gpio-mockup.sh to test using the GPIO SYSFS uAPI

- #"Checking the logic of active_low: " - test_pin_logic $nr out 1 1 - test_pin_logic $nr out 1 0 - test_pin_logic $nr out 0 1 - test_pin_logic $nr out 0 0 +SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'` +[ ! -d "$SYSFS" ] && skip "sysfs is not mounted"

- #"Checking the logic of direction: " - test_pin_logic $nr in 1 1 - test_pin_logic $nr out 1 0 - test_pin_logic $nr low 0 1 - test_pin_logic $nr high 0 0 +GPIO_SYSFS="${SYSFS}/class/gpio" +[ ! -d "$GPIO_SYSFS" ] && skip "CONFIG_GPIO_SYSFS is not selected"

- echo $nr > $GPIO_SYSFS/unexport +sysfs_nr= +sysfs_ldir=

- echo "successful" -} - -test_one_pin_fail() +# determines the sysfs GPIO number given the $chip and $offset +find_sysfs_nr() { - nr=$1 - - echo $nr > $GPIO_SYSFS/export 2>/dev/null - - if [ X$? != X0 ]; then - echo "test invalid pin $nr successful" - else - echo "test invalid pin $nr failed" - echo $nr > $GPIO_SYSFS/unexport 2>/dev/null - die - fi + # e.g. gpiochip0: GPIOs 508-511, parent: platform/gpio-mockup.0, gpio-mockup-A: + local platform=`cat $SYSFS/kernel/debug/gpio | grep "$chip:" | tr -d ',' | awk '{print $5}'` + # e.g. /sys/class/gpio/gpiochip508/device/gpiochip0/dev + local syschip=`ls -d $GPIO_SYSFS/gpiochip*/device/$chip/dev` + syschip=${syschip#$GPIO_SYSFS} + syschip=${syschip%/device/$chip/dev} + sysfs_nr=`cat $SYSFS/devices/$platform/gpio/$syschip/base` + sysfs_nr=$(($sysfs_nr + $offset)) + sysfs_ldir=$GPIO_SYSFS/gpio$sysfs_nr }

-list_chip() +# The helpers being overridden... +get_line() { - echo `ls -d $GPIO_DRV_SYSFS/gpiochip* 2>/dev/null` + [ -z "$sysfs_nr" ] && fail "sysfs line $chip:$offset not exported" + cat $sysfs_ldir/value }

-test_chip() +set_line() { - chip=$1 - name=`basename $chip` - base=`cat $chip/base` - ngpio=`cat $chip/ngpio` - printf "%-10s %-5s %-5s\n" $name $base $ngpio - if [ $ngpio = "0" ]; then - echo "number of gpio is zero is not allowed". + if [ -z "$sysfs_nr" ]; then + find_sysfs_nr + echo $sysfs_nr > $GPIO_SYSFS/export fi - test_one_pin $base - test_one_pin $(($base + $ngpio - 1)) - test_one_pin $((( RANDOM % $ngpio ) + $base )) + for option in $*; do + case $option in + active-high) + echo 0 > $sysfs_ldir/active_low + ;; + active-low) + echo 1 > $sysfs_ldir/active_low + ;; + input) + echo "in" > $sysfs_ldir/direction + ;; + 0) + echo "out" > $sysfs_ldir/direction + echo 0 > $sysfs_ldir/value + ;; + 1) + echo "out" > $sysfs_ldir/direction + echo 1 > $sysfs_ldir/value + ;; + esac + done }

-test_chips_sysfs() +release_line() { - gpiochip=`list_chip $module` - if [ X"$gpiochip" = X ]; then - if [ X"$valid" = Xfalse ]; then - echo "successful" - else - echo "fail" - die - fi - else - for chip in $gpiochip; do - test_chip $chip - done - fi + [ -z "$sysfs_nr" ] && return + echo $sysfs_nr > $GPIO_SYSFS/unexport + sysfs_nr= + sysfs_ldir= } - diff --git a/tools/testing/selftests/gpio/gpio-mockup.sh b/tools/testing/selftests/gpio/gpio-mockup.sh index 7f35b9880485..66eed9b60963 100755 --- a/tools/testing/selftests/gpio/gpio-mockup.sh +++ b/tools/testing/selftests/gpio/gpio-mockup.sh @@ -2,71 +2,55 @@ # 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= +#0: success +#1: fail +#4: skip test - including run as non-root user + +BASE=`dirname $0` DEBUGFS= GPIO_DEBUGFS= -dev_type= -module= +dev_type="cdev" +module="gpio-mockup" +verbose= +random= +active_opt= +bias_opt= +line_set_pid=

-# Kselftest framework requirement - SKIP code is 4. +# Kselftest return codes +ksft_fail=1 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" + echo "$0 [-frv] [-t type]" + echo "-f: full test (minimal set run by default)" + echo "-r: test random lines as well as fence posts" + echo "-t: interface type:" + echo " cdev (character device ABI) - default" + echo " sysfs (deprecated SYSFS ABI)" + echo "-v: verbose progress reporting" + exit $ksft_fail }

-prerequisite() +skip() { - 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 + echo $* >&2 + echo GPIO $module test SKIP + exit $ksft_skip }

-try_insert_module() +prerequisite() { - 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 + [ $(id -u) -ne 0 ] && skip "must be run as root" + + [ ! which modprobe > /dev/null 2>&1 ] && skip "need modprobe installed" + + DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'` + [ ! -d "$DEBUGFS" ] && skip "debugfs is not mounted" + + GPIO_DEBUGFS=$DEBUGFS/$module }

remove_module() @@ -74,133 +58,313 @@ remove_module() modprobe -r -q $module }

-die() +cleanup() { + release_line remove_module - exit 5 }

-test_chips() +fail() { - 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 + echo "test failed: $*" >&2 + echo GPIO $module test FAIL + exit $ksft_fail +} + +try_insert_module() +{ + modprobe -q $module $1 + err=$? + [ $err -ne 0 ] && fail "insert $module failed with error $err" +} + +log() +{ + [ "$verbose" ] && echo $* +} + +# The following line helpers, release_Line, get_line and set_line, all +# make use of the global $chip and $offset variables. +# +# This implementation drives the GPIO character device (cdev) uAPI. +# Other implementations may override these to test different uAPIs. + +# Release any resources related to the line +release_line() +{ + [ -z "$line_set_pid" ] && return + kill $line_set_pid + line_set_pid= }

-gpio_test() +# Read the current value of the line +get_line() { - param=$1 - valid=$2 + release_line + + $BASE/gpio-mockup-cdev $active_opt /dev/$chip $offset > /dev/null 2>&1 + echo $? +}

- if [ X"$param" = X ]; then - die +# Set the state of the line +# +# Changes to line configuration are provided as parameters. +# The line is assumed to be an output if the line value 0 or 1 is +# specified, else an input. +set_line() +{ + local val= + + release_line + + # parse config options... + for option in $*; do + case $option in + active-low) + active_opt="-l " + ;; + active-high) + active_opt= + ;; + bias-none) + bias_opt= + ;; + pull-down) + bias_opt="-bpull-down " + ;; + pull-up) + bias_opt="-bpull-up " + ;; + 0) + val=0 + ;; + 1) + val=1 + ;; + esac + done + + local cdev_opts=${active_opt} + if [ "$val" ]; then + $BASE/gpio-mockup-cdev $cdev_opts -s$val /dev/$chip $offset 2>&1 >/dev/null & + # failure to set is detected by reading mock and toggling values + line_set_pid=$! + # wait for line to be set... + sleep 0.05 + elif [ "$bias_opt" ]; then + cdev_opts=${cdev_opts}${bias_opt} + $BASE/gpio-mockup-cdev $cdev_opts /dev/$chip $offset 2>&1 >/dev/null fi - try_insert_module "gpio_mockup_ranges=$param" - echo -n "GPIO $module test with ranges: <" - echo "$param>: " - printf "%-10s %s\n" $param - test_chips $module $valid - remove_module }

-BASE=`dirname $0` +assert_line() +{ + local val=`get_line` + [ "$val" -ne $1 ] && fail "line value is $val when $1 was expected" +} + +# The following mock helpers all make use of the $mock_line +set_mock() +{ + echo $1 > $mock_line +}

-dev_type= -TEMP=`getopt -o fhm:t: -n '$0' -- "$@"` +assert_mock() +{ + local val=`cat $mock_line` + [ "$val" -ne $1 ] && fail "mock $mock_line value $val when $1 expected" +}

-if [ "$?" != "0" ]; then - echo "Parameter process failed, Terminating..." >&2 - exit 1 -fi +# test the functionality of a line +# +# The line is set from the mockup side and is read from the userspace side +# (input), and is set from the userspace side and is read from the mockup side +# (output). +# +# Setting the mockup pull using the userspace interface bias settings is +# tested where supported by the userspace interface (cdev). +test_line() +{ + chip=$1 + offset=$2 + log "test_line $chip $offset" + mock_line=$GPIO_DEBUGFS/$chip/$offset + [ ! -e "$mock_line" ] && fail "missing line $chip:$offset"

-# Note the quotes around `$TEMP': they are essential! -eval set -- "$TEMP" + # test as input + set_mock 1 + set_line input active-high + assert_line 1 + set_mock 0 + assert_line 0

-while true; do - case $1 in - -f) - full_test=true + if [ "$full_test" ]; then + # test as input + if [ "$dev_type" != "sysfs" ]; then + set_mock 0 + set_line input pull-up + assert_line 1 + set_mock 0 + assert_line 0 + + set_mock 1 + set_line input pull-down + assert_line 0 + set_mock 1 + assert_line 1 + + set_line bias-none + fi + + set_mock 0 + set_line active-low + assert_line 1 + set_mock 1 + assert_line 0 + + # test as output + set_mock 1 + set_line active-low 1 + assert_mock 0 + set_line 0 + assert_mock 1 + fi + + # test as output + set_mock 1 + set_line active-high 0 + assert_mock 0 + set_line 1 + assert_mock 1 + + release_line +} + +test_no_line() +{ + log test_no_line $* + [ -e "$GPIO_DEBUGFS/$1/$2" ] && fail "unexpected line $1:$2" +} + +# Load the module and check that the expected number of gpiochips, with the +# expected number of lines, are created and are functional. +# +# $1 is the gpio_mockup_ranges parameter for the module +# The remaining parameters are the number of lines, n, expected for each of +# the gpiochips expected to be created. +# +# For each gpiochip the fence post lines, 0 and n-1, are tested, and the +# line on the far side of the fence post, n, is tested to not exist. +# +# If the $random flag is set then a random line in the middle of the +# gpiochip is tested as well. +insmod_test() +{ + local ranges=$1 + local gc= + shift + + [ -z "$ranges" ] && fail "missing ranges" + try_insert_module "gpio_mockup_ranges=$ranges" + log "GPIO $module test with ranges: <$ranges>: " + gpiochip=`ls -d $DEBUGFS/$module/gpiochip* 2>/dev/null` + for chip in $gpiochip; do + gc=`basename $chip` + [ -z "$1" ] && fail "unexpected chip - $gc" + test_line $gc 0 + if [ "$random" ] && [ $1 -gt 2 ]; then + test_line $gc $((( RANDOM % ($1 - 2) + 1))) + fi + test_line $gc $(($1 - 1)) + test_no_line $gc $1 shift + done + [ "$1" ] && fail "missing expected chip of width $1" + remove_module +} + +while getopts ":frvt:" opt; do + case $opt in + f) + full_test=true ;; - -h) - usage - exit + r) + random=true ;; - -m) - module=$2 - shift 2 + t) + dev_type=$OPTARG ;; - -t) - dev_type=$2 - shift 2 - ;; - --) - shift - break + v) + verbose=true ;; *) - echo "Internal error!" - exit 1 + usage ;; esac done +shift $((OPTIND-1))

-if [ X"$module" = X ]; then - module="gpio-mockup" -fi +prerequisite

-if [ X$dev_type != Xsysfs ]; then - dev_type="chardev" -fi +trap exit SIGTERM SIGINT +trap cleanup EXIT

-prerequisite +case "$dev_type" in +sysfs) + source $BASE/gpio-mockup-sysfs.sh + echo "WARNING: gpio sysfs ABI is deprecated." + ;; +cdev) + ;; +*) + fail "unknown interface type: $dev_type" + ;; +esac + +remove_module

-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$full_test = Xtrue ]; then - gpio_test "-1,32,32,64" true - gpio_test "-1,32,40,64,-1,5" true - gpio_test "-1,32,32,64,-1,32" true - gpio_test "0,32,32,64,-1,32,-1,32" true - gpio_test "-1,32,-1,32,0,32,32,64" true - echo "2. Do basic test: successful means insert gpiochip and" - echo " manipulate gpio pin successful" - gpio_test "0,32" true - gpio_test "0,32,32,64" true - gpio_test "0,32,40,64,64,96" true +# manual gpio allocation tests fail if a physical chip already exists +[ "$full_test" ] && [ -e "/dev/gpiochip0" ] && skip "full tests conflict with gpiochip0" + +echo "1. Module load tests" +echo "1.1. dynamic allocation of gpio" +insmod_test "-1,32" 32 +insmod_test "-1,32,-1,32" 32 32 +insmod_test "-1,32,-1,32,-1,32" 32 32 32 +if [ "$full_test" ]; then + echo "1.2. manual allocation of gpio" + insmod_test "0,32" 32 + insmod_test "0,32,32,64" 32 32 + insmod_test "0,32,40,64,64,96" 32 24 32 + echo "1.3. dynamic and manual allocation of gpio" + insmod_test "-1,32,32,64" 32 32 + insmod_test "-1,32,-1,32,0,32,32,64" 32 32 32 32 + insmod_test "-1,32,32,64,-1,32" 32 32 32 + insmod_test "-1,32,40,64,-1,5" 32 24 5 + insmod_test "0,32,32,64,-1,32,-1,32" 32 32 32 32 fi -echo "3. Error test: successful means insert gpiochip failed" -echo "3.1 Test number of gpio overflow" -#Currently: The max number of gpio(1024) is defined in arm architecture. -gpio_test "-1,32,-1,1024" false -if [ X$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 +echo "2. Module load error tests" +echo "2.1 gpio overflow" +# Currently: The max number of gpio(1024) is defined in arm architecture. +insmod_test "-1,1024" +if [ "$full_test" ]; then + echo "2.2 no lines defined" + insmod_test "0,0" + echo "2.3 ignore range overlap" + insmod_test "0,32,0,1" 32 + insmod_test "0,32,1,5" 32 + insmod_test "0,32,30,35" 32 + insmod_test "0,32,31,32" 32 + insmod_test "10,32,30,35" 22 + insmod_test "10,32,9,14" 22 + insmod_test "0,32,20,21,40,56" 32 16 + insmod_test "0,32,32,64,32,40" 32 32 + insmod_test "0,32,32,64,36,37" 32 32 + insmod_test "0,32,35,64,34,36" 32 29 + insmod_test "0,32,35,64,35,45" 32 29 + insmod_test "0,32,40,56,30,33" 32 16 + insmod_test "0,32,40,56,30,41" 32 16 + insmod_test "0,32,40,56,39,45" 32 16 fi

-echo GPIO test PASS - +echo GPIO $module test PASS

Build restrictions related to the gpio-mockup-chardev helper are no longer relevant so remove them.

Signed-off-by: Kent Gibson warthog618@gmail.com --- tools/testing/selftests/Makefile | 9 --------- 1 file changed, 9 deletions(-)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index d9c283503159..5411041e63a0 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -121,15 +121,6 @@ ARCH ?= $(SUBARCH) export KSFT_KHDR_INSTALL_DONE := 1 export BUILD

-# build and run gpio when output directory is the src dir. -# gpio has dependency on tools/gpio and builds tools/gpio -# objects in the src directory in all cases making the src -# repo dirty even when objects are relocated. -ifneq (1,$(DEFAULT_INSTALL_HDR_PATH)) - TMP := $(filter-out gpio, $(TARGETS)) - TARGETS := $(TMP) -endif - # set default goal to all, so make without a target runs all, even when # all isn't the first target in the file. .DEFAULT_GOAL := all

gpio-mockup-chardev helper has been obsoleted and removed, so also remove the tools/gpio code that it, and nothing else, was using.

Signed-off-by: Kent Gibson warthog618@gmail.com --- tools/gpio/gpio-utils.c | 89 ----------------------------------------- tools/gpio/gpio-utils.h | 6 --- 2 files changed, 95 deletions(-)

diff --git a/tools/gpio/gpio-utils.c b/tools/gpio/gpio-utils.c index 37187e056c8b..1639b4d832cd 100644 --- a/tools/gpio/gpio-utils.c +++ b/tools/gpio/gpio-utils.c @@ -32,74 +32,6 @@ * following api will request gpio lines, do the operation and then * release these lines. */ -/** - * gpiotools_request_linehandle() - request gpio lines in a gpiochip - * @device_name: The name of gpiochip without prefix "/dev/", - * such as "gpiochip0" - * @lines: An array desired lines, specified by offset - * index for the associated GPIO device. - * @num_lines: The number of lines to request. - * @flag: The new flag for requsted gpio. Reference - * "linux/gpio.h" for the meaning of flag. - * @data: Default value will be set to gpio when flag is - * GPIOHANDLE_REQUEST_OUTPUT. - * @consumer_label: The name of consumer, such as "sysfs", - * "powerkey". This is useful for other users to - * know who is using. - * - * Request gpio lines through the ioctl provided by chardev. User - * could call gpiotools_set_values() and gpiotools_get_values() to - * read and write respectively through the returned fd. Call - * gpiotools_release_linehandle() to release these lines after that. - * - * Return: On success return the fd; - * On failure return the errno. - */ -int gpiotools_request_linehandle(const char *device_name, unsigned int *lines, - unsigned int num_lines, unsigned int flag, - struct gpiohandle_data *data, - const char *consumer_label) -{ - struct gpiohandle_request req; - char *chrdev_name; - int fd; - int i; - int ret; - - ret = asprintf(&chrdev_name, "/dev/%s", device_name); - if (ret < 0) - return -ENOMEM; - - fd = open(chrdev_name, 0); - if (fd == -1) { - ret = -errno; - fprintf(stderr, "Failed to open %s, %s\n", - chrdev_name, strerror(errno)); - goto exit_free_name; - } - - for (i = 0; i < num_lines; i++) - req.lineoffsets[i] = lines[i]; - - req.flags = flag; - strcpy(req.consumer_label, consumer_label); - req.lines = num_lines; - if (flag & GPIOHANDLE_REQUEST_OUTPUT) - memcpy(req.default_values, data, sizeof(req.default_values)); - - ret = ioctl(fd, GPIO_GET_LINEHANDLE_IOCTL, &req); - if (ret == -1) { - ret = -errno; - fprintf(stderr, "Failed to issue %s (%d), %s\n", - "GPIO_GET_LINEHANDLE_IOCTL", ret, strerror(errno)); - } - - if (close(fd) == -1) - perror("Failed to close GPIO character device file"); -exit_free_name: - free(chrdev_name); - return ret < 0 ? ret : req.fd; -}

/** * gpiotools_request_line() - request gpio lines in a gpiochip @@ -215,27 +147,6 @@ int gpiotools_get_values(const int fd, struct gpio_v2_line_values *values) return ret; }

-/** - * gpiotools_release_linehandle(): Release the line(s) of gpiochip - * @fd: The fd returned by - * gpiotools_request_linehandle(). - * - * Return: On success return 0; - * On failure return the errno. - */ -int gpiotools_release_linehandle(const int fd) -{ - int ret; - - ret = close(fd); - if (ret == -1) { - perror("Failed to close GPIO LINEHANDLE device file"); - ret = -errno; - } - - return ret; -} - /** * gpiotools_release_line(): Release the line(s) of gpiochip * @fd: The fd returned by diff --git a/tools/gpio/gpio-utils.h b/tools/gpio/gpio-utils.h index 6c69a9f1c253..8af7c8ee19ce 100644 --- a/tools/gpio/gpio-utils.h +++ b/tools/gpio/gpio-utils.h @@ -24,12 +24,6 @@ static inline int check_prefix(const char *str, const char *prefix) strncmp(str, prefix, strlen(prefix)) == 0; }

-int gpiotools_request_linehandle(const char *device_name, unsigned int *lines, - unsigned int num_lines, unsigned int flag, - struct gpiohandle_data *data, - const char *consumer_label); -int gpiotools_release_linehandle(const int fd); - int gpiotools_request_line(const char *device_name, unsigned int *lines, unsigned int num_lines,

GPIO CDEV is now optional and required for the selftests so add it to the config.

Signed-off-by: Kent Gibson warthog618@gmail.com --- tools/testing/selftests/gpio/config | 1 + 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/gpio/config b/tools/testing/selftests/gpio/config index abaa6902b7b6..ce100342c20b 100644 --- a/tools/testing/selftests/gpio/config +++ b/tools/testing/selftests/gpio/config @@ -1,2 +1,3 @@ CONFIG_GPIOLIB=y +CONFIG_GPIO_CDEV=y CONFIG_GPIO_MOCKUP=m