1/*
 2 * This header provides constants for most GPIO bindings.
 3 *
 4 * Most GPIO bindings include a flags cell as part of the GPIO specifier.
 5 * In most cases, the format of the flags cell uses the standard values
 6 * defined in this header.
 7 */
 8
 9#ifndef _DT_BINDINGS_GPIO_GPIO_H
10#define _DT_BINDINGS_GPIO_GPIO_H
11
12/* Bit 0 express polarity */
13#define GPIO_ACTIVE_HIGH 0
14#define GPIO_ACTIVE_LOW 1
15
16/* Bit 1 express single-endedness */
17#define GPIO_PUSH_PULL 0
18#define GPIO_SINGLE_ENDED 2
19
20/*
21 * Open Drain/Collector is the combination of single-ended active low,
22 * Open Source/Emitter is the combination of single-ended active high.
23 */
24#define GPIO_OPEN_DRAIN (GPIO_SINGLE_ENDED | GPIO_ACTIVE_LOW)
25#define GPIO_OPEN_SOURCE (GPIO_SINGLE_ENDED | GPIO_ACTIVE_HIGH)
26
27#endif

 1/*
 2 * This header provides constants for most GPIO bindings.
 3 *
 4 * Most GPIO bindings include a flags cell as part of the GPIO specifier.
 5 * In most cases, the format of the flags cell uses the standard values
 6 * defined in this header.
 7 */
 8
 9#ifndef _DT_BINDINGS_GPIO_GPIO_H
10#define _DT_BINDINGS_GPIO_GPIO_H
11
12/* Bit 0 express polarity */
13#define GPIO_ACTIVE_HIGH 0
14#define GPIO_ACTIVE_LOW 1
15
16/* Bit 1 express single-endedness */
17#define GPIO_PUSH_PULL 0
18#define GPIO_SINGLE_ENDED 2
19
20/*
21 * Open Drain/Collector is the combination of single-ended active low,
22 * Open Source/Emitter is the combination of single-ended active high.
23 */
24#define GPIO_OPEN_DRAIN (GPIO_SINGLE_ENDED | GPIO_ACTIVE_LOW)
25#define GPIO_OPEN_SOURCE (GPIO_SINGLE_ENDED | GPIO_ACTIVE_HIGH)
26
27#endif