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/*
* Copyright (C) 2021 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE /* For asprintf */
#include <assert.h>
#include <errno.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "compatible_devices.h"
#include "exynos4412_gpios.h"
#include "exynos4412_gpios_data.h"
#include "tests.h"
static int test_output_value(int debug, char *devmem, int fd, size_t page_size,
char *bank, int gpio_offset)
{
char *gpioset_high_command;
char *gpioset_low_command;
int rc;
rc = asprintf(&gpioset_high_command, "gpioset %s %d=1 > /dev/null", bank, gpio_offset);
if (rc == -1) {
rc = errno;
printf("%s: asprintf failed with error %d: %s\n",
__func__, rc, strerror(rc));
assert(false);
}
rc = system(gpioset_high_command);
assert(rc == 0);
free(gpioset_high_command);
rc = gpio_get_direction(devmem, fd, page_size, bank, gpio_offset);
assert (rc == GPIO_OUTPUT);
rc = gpio_get_output_value(devmem, fd, page_size, bank, gpio_offset);
assert (rc == GPIO_VALUE_HIGH);
rc = asprintf(&gpioset_low_command, "gpioset %s %d=0 > /dev/null", bank, gpio_offset);
if (rc == -1) {
rc = errno;
printf("%s: asprintf failed with error %d: %s\n",
__func__, rc, strerror(rc));
assert(false);
}
rc = system(gpioset_low_command);
assert(rc == 0);
rc = gpio_get_direction(devmem, fd, page_size, bank, gpio_offset);
assert (rc == GPIO_OUTPUT);
rc = gpio_get_output_value(devmem, fd, page_size, bank, gpio_offset);
assert (rc == GPIO_VALUE_LOW);
free(gpioset_low_command);
return 0;
}
static int test_direction(int debug, char *devmem, int fd, size_t page_size,
char *bank, int gpio_offset)
{
char *gpioget_command;
char *gpioset_command;
int rc;
rc = asprintf(&gpioget_command, "gpioget %s %d > /dev/null", bank, gpio_offset);
if (rc == -1) {
rc = errno;
printf("%s: asprintf failed with error %d: %s\n",
__func__, rc, strerror(rc));
assert(false);
}
rc = system(gpioget_command);
assert(rc == 0);
free(gpioget_command);
rc = gpio_get_direction(devmem, fd, page_size, bank, gpio_offset);
assert (rc == GPIO_INPUT);
rc = asprintf(&gpioset_command, "gpioset %s %d=1 > /dev/null", bank, gpio_offset);
if (rc == -1) {
rc = errno;
printf("%s: asprintf failed with error %d: %s\n",
__func__, rc, strerror(rc));
assert(false);
}
rc = system(gpioset_command);
assert(rc == 0);
rc = gpio_get_direction(devmem, fd, page_size, bank, gpio_offset);
assert (rc == GPIO_OUTPUT);
free(gpioset_command);
return 0;
}
int run_tests(int debug, char *devmem, int fd, size_t page_size)
{
bool has_gpioget;
bool has_gpioset;
has_gpioget = device_has_gpioget(debug);
if (!has_gpioget) {
printf("[ !! ] gpioget not found: skipping tests\n");
}
has_gpioset = device_has_gpioset(debug);
if (!has_gpioset) {
printf("[ !! ] gpioset not found: skipping tests\n");
}
if (!has_gpioget || !has_gpioset)
return -1;
test_direction(debug, devmem, fd, page_size, "gpj1", 1);
printf("[ OK ] GPIO direction\n");
test_output_value(debug, devmem, fd, page_size, "gpj1", 1);
printf("[ OK ] GPIO output value\n");
return 0;
}
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