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// SPDX-License-Identifier: GPL-2.0-or-later
#include <common.h>
#include <command.h>
#include <errno.h>
#include <gpio.h>
#include <getopt.h>
static int get_gpio_and_value(int argc, char *argv[],
int *gpio, int *value)
{
struct gpio_chip *chip = NULL;
struct device *dev;
int count = 1;
int ret = 0;
int opt;
while ((opt = getopt(argc, argv, "d:")) > 0) {
switch (opt) {
case 'd':
dev = find_device(optarg);
if (!dev)
return -ENODEV;
chip = gpio_get_chip_by_dev(dev);
if (!chip)
return -EINVAL;
break;
default:
return COMMAND_ERROR_USAGE;
}
}
if (value)
count++;
if (argc < optind + count)
return COMMAND_ERROR_USAGE;
*gpio = gpio_find_by_name(argv[optind]);
if (*gpio < 0)
*gpio = gpio_find_by_label(argv[optind]);
if (*gpio < 0) {
ret = kstrtoint(argv[optind], 0, gpio);
if (ret < 0)
return ret;
if (chip)
*gpio += chip->base;
} else if (chip) {
if (gpio_get_chip(*gpio) != chip) {
printf("%s: not exporting pin %u\n", dev_name(chip->dev), *gpio);
return -EINVAL;
}
}
if (value)
ret = kstrtoint(argv[optind + 1], 0, value);
return ret;
}
static int do_gpio_get_value(int argc, char *argv[])
{
int gpio, value, ret;
ret = get_gpio_and_value(argc, argv, &gpio, NULL);
if (ret)
return ret;
value = gpio_get_value(gpio);
if (value < 0)
return 1;
return value;
}
BAREBOX_CMD_START(gpio_get_value)
.cmd = do_gpio_get_value,
BAREBOX_CMD_DESC("return value of a GPIO pin")
BAREBOX_CMD_OPTS("[-d CONTROLLER] GPIO")
BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
BAREBOX_CMD_END
static int do_gpio_set_value(int argc, char *argv[])
{
int gpio, value, ret;
ret = get_gpio_and_value(argc, argv, &gpio, &value);
if (ret)
return ret;
gpio_set_value(gpio, value);
return 0;
}
BAREBOX_CMD_START(gpio_set_value)
.cmd = do_gpio_set_value,
BAREBOX_CMD_DESC("set a GPIO's output value")
BAREBOX_CMD_OPTS("[-d CONTROLLER] GPIO VALUE")
BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
BAREBOX_CMD_END
static int do_gpio_direction_input(int argc, char *argv[])
{
int gpio, ret;
ret = get_gpio_and_value(argc, argv, &gpio, NULL);
if (ret)
return ret;
ret = gpio_direction_input(gpio);
if (ret)
return 1;
return 0;
}
BAREBOX_CMD_START(gpio_direction_input)
.cmd = do_gpio_direction_input,
BAREBOX_CMD_DESC("set direction of a GPIO pin to input")
BAREBOX_CMD_OPTS("[-d CONTROLLER] GPIO")
BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
BAREBOX_CMD_END
static int do_gpio_direction_output(int argc, char *argv[])
{
int gpio, value, ret;
ret = get_gpio_and_value(argc, argv, &gpio, &value);
if (ret)
return ret;
ret = gpio_direction_output(gpio, value);
if (ret)
return 1;
return 0;
}
BAREBOX_CMD_START(gpio_direction_output)
.cmd = do_gpio_direction_output,
BAREBOX_CMD_DESC("set direction of a GPIO pin to output")
BAREBOX_CMD_OPTS("[-d CONTROLLER] GPIO VALUE")
BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
BAREBOX_CMD_END
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