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1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.com> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | ||
20 | /* | |
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. | |
23 | */ | |
24 | ||
391e23a9 UH |
25 | #ifndef LIBSIGROK_HARDWARE_BAYLIBRE_ACME_GPIO_H |
26 | #define LIBSIGROK_HARDWARE_BAYLIBRE_ACME_GPIO_H | |
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27 | |
28 | enum { | |
29 | GPIO_DIR_IN, | |
30 | GPIO_DIR_OUT, | |
31 | }; | |
32 | ||
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); | |
391e23a9 | 37 | /* These functions export given GPIO if it's not already exported. */ |
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38 | SR_PRIV int sr_gpio_setval_export(int gpio, int value); |
39 | SR_PRIV int sr_gpio_getval_export(int gpio); | |
40 | ||
391e23a9 | 41 | #endif |