2 * This file is part of the libsigrok project.
4 * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * Linux-specific GPIO interface helpers. These functions could be moved out
22 * of this directory if any other driver would happen to want to use them.
25 #ifndef LIBSIGROK_HARDWARE_BAYLIBRE_ACME_GPIO_H
26 #define LIBSIGROK_HARDWARE_BAYLIBRE_ACME_GPIO_H
33 SR_PRIV int sr_gpio_export(unsigned gpio);
34 SR_PRIV int sr_gpio_set_direction(unsigned gpio, unsigned direction);
35 SR_PRIV int sr_gpio_set_value(unsigned gpio, unsigned value);
36 SR_PRIV int sr_gpio_get_value(int gpio);
37 /* These functions export given GPIO if it's not already exported. */
38 SR_PRIV int sr_gpio_setval_export(int gpio, int value);
39 SR_PRIV int sr_gpio_getval_export(int gpio);