Cregit: Linux 5.17: gpio.h

Contributors: 7
Author	Tokens	Token Proportion	Commits	Commit Proportion
Stephen Warren	17	26.15%	1	14.29%
Linus Walleij	16	24.62%	1	14.29%
Laxman Dewangan	12	18.46%	1	14.29%
Thomas Petazzoni	10	15.38%	1	14.29%
Charles Keepax	6	9.23%	1	14.29%
Andrew Jeffery	3	4.62%	1	14.29%
Greg Kroah-Hartman	1	1.54%	1	14.29%
Total	65		7

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * This header provides constants for most GPIO bindings.
 *
 * Most GPIO bindings include a flags cell as part of the GPIO specifier.
 * In most cases, the format of the flags cell uses the standard values
 * defined in this header.
 */

#ifndef _DT_BINDINGS_GPIO_GPIO_H
#define _DT_BINDINGS_GPIO_GPIO_H

/* Bit 0 express polarity */
#define GPIO_ACTIVE_HIGH 0
#define GPIO_ACTIVE_LOW 1

/* Bit 1 express single-endedness */
#define GPIO_PUSH_PULL 0
#define GPIO_SINGLE_ENDED 2

/* Bit 2 express Open drain or open source */
#define GPIO_LINE_OPEN_SOURCE 0
#define GPIO_LINE_OPEN_DRAIN 4

/*
 * Open Drain/Collector is the combination of single-ended open drain interface.
 * Open Source/Emitter is the combination of single-ended open source interface.
 */
#define GPIO_OPEN_DRAIN (GPIO_SINGLE_ENDED | GPIO_LINE_OPEN_DRAIN)
#define GPIO_OPEN_SOURCE (GPIO_SINGLE_ENDED | GPIO_LINE_OPEN_SOURCE)

/* Bit 3 express GPIO suspend/resume and reset persistence */
#define GPIO_PERSISTENT 0
#define GPIO_TRANSITORY 8

/* Bit 4 express pull up */
#define GPIO_PULL_UP 16

/* Bit 5 express pull down */
#define GPIO_PULL_DOWN 32

#endif