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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/>.
*/
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include <sys/stat.h>
#include "compatible_devices.h"
#include "exynos4412_gpios.h"
#include "exynos4412_gpios_data.h"
#include "modem_gpios_data.h"
#include "tests.h"
int usage(char* progname)
{
printf("Usage: %s <flash|gpl1|gpl2|gps|gpy0|modem|test>\n", progname);
printf("\n");
printf("Available commands:\n");
printf("\tflash: dump flash GPIO (gpj1 1) status\n");
printf("\tgpl1: dump GPL1 GPIOs status"
" (for tests on gpio127 and gpio128)\n");
printf("\tgpl2: dump GPL2 GPIOs status"
" (for tests on gpio127 and gpio128)\n");
printf("\tgps: dump GPS GPIOs status\n");
printf("\tgpy0: dump GPY0 GPIOs status"
" (for tests on gpio127 and gpio128)\n");
printf("\tmodem: dump the modem GPIOs status\n");
printf("\ttest: run self tests\n");
return 0;
}
int dump_flash_gpio_status(int debug, char* devmem, int fd, size_t page_size)
{
int rc;
rc = dump_gpio_infos(debug, devmem, fd, page_size, "gpj1", 1);
if (rc == -1) {
printf("dump_gpio_infos failed with error %d\n", rc);
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
return 0;
}
int dump_flash_gps_status(int debug, char* devmem, int fd, size_t page_size)
{
int rc;
rc = dump_gpio_infos(debug, devmem, fd, page_size, "gpl2", 1);
if (rc == -1) {
printf("dump_gpio_infos failed with error %d\n", rc);
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
rc = dump_gpio_infos(debug, devmem, fd, page_size, "gpl2", 2);
if (rc == -1) {
printf("dump_gpio_infos failed with error %d\n", rc);
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
return 0;
}
int dump_gpio_bank_status(int debug, char* devmem, int fd, size_t page_size,
char* bank)
{
int i;
int nr_gpios;
int rc;
nr_gpios = get_bank_gpio_numbers(debug, bank);
if (nr_gpios == -1) {
/* The get_bank_gpio_numbers function
* already prints some error
*/
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
for (i=0; i < nr_gpios; i++) {
rc = dump_gpio_infos(debug, devmem, fd, page_size, bank, i);
if (rc == -1) {
printf("dump_gpio_infos failed with error %d\n", rc);
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
}
return 0;
}
int main(int argc, char *argv[])
{
int fd = 0;
int rc = 0;
int debug = 0;
char *devmem = "/dev/mem";
size_t page_size = 4096;
assert(argc >= 1);
if (argc != 2) {
usage(argv[0]);
return EX_USAGE;
}
if (!device_is_compatible(debug)) {
printf("Exiting due to incompatible device\n");
return 0;
}
/*
* TODO: check if root or tell the user to become root in case or
* access error
*/
fd = open(devmem, O_RDWR | O_SYNC);
if (fd == -1) {
rc = errno;
printf("Opening %s failed with error %d: %s\n",
devmem, rc, strerror(rc));
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
if (argc == 2 && !strcmp("flash", argv[1])) {
return dump_flash_gpio_status(debug, devmem, fd, page_size);
} else if (argc == 2 && !strcmp("gpl1", argv[1])) {
return dump_gpio_bank_status(debug, devmem, fd, page_size,
"gpl1");
} else if (argc == 2 && !strcmp("gpl2", argv[1])) {
return dump_gpio_bank_status(debug, devmem, fd, page_size,
"gpl2");
} else if (argc == 2 && !strcmp("gps", argv[1])) {
return dump_flash_gps_status(debug, devmem, fd, page_size);
} else if (argc == 2 && !strcmp("gpy0", argv[1])) {
return dump_gpio_bank_status(debug, devmem, fd, page_size,
"gpy0");
} else if (argc == 2 && !strcmp("modem", argv[1])) {
return dump_modem_gpio_infos(debug, devmem, fd, page_size);
} else if (argc == 2 && !strcmp("test", argv[1])) {
return run_tests(debug, devmem, fd, page_size);
} else {
usage(argv[0]);
return EX_USAGE;
}
rc = close(fd);
if (rc == -1) {
rc = errno;
printf("Closing %s failed with error %d: %s\n",
devmem, rc, strerror(rc));
/* TODO: return more precise error */
return EX_UNAVAILABLE;
}
return 0;
}
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