/* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */ /* * 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 … #define GPIO_ACTIVE_LOW … /* Bit 1 express single-endedness */ #define GPIO_PUSH_PULL … #define GPIO_SINGLE_ENDED … /* Bit 2 express Open drain or open source */ #define GPIO_LINE_OPEN_SOURCE … #define GPIO_LINE_OPEN_DRAIN … /* * 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 … #define GPIO_OPEN_SOURCE … /* Bit 3 express GPIO suspend/resume and reset persistence */ #define GPIO_PERSISTENT … #define GPIO_TRANSITORY … /* Bit 4 express pull up */ #define GPIO_PULL_UP … /* Bit 5 express pull down */ #define GPIO_PULL_DOWN … /* Bit 6 express pull disable */ #define GPIO_PULL_DISABLE … #endif
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