diff options
Diffstat (limited to 'zephyr/include/dt-bindings/gpio_defines.h')
| -rw-r--r-- | zephyr/include/dt-bindings/gpio_defines.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/zephyr/include/dt-bindings/gpio_defines.h b/zephyr/include/dt-bindings/gpio_defines.h new file mode 100644 index 0000000000..07a499299b --- /dev/null +++ b/zephyr/include/dt-bindings/gpio_defines.h @@ -0,0 +1,47 @@ +/* + * Copyright 2020 Google LLC. + * + * SPDX-License-Identifier: Apache-2.0 + */ +#ifndef DT_BINDINGS_GPIO_DEFINES_H_ +#define DT_BINDINGS_GPIO_DEFINES_H_ + +#include <dt-bindings/gpio/gpio.h> + +/* + * The GPIO_INPUT and GPIO_OUTPUT defines are normally not available to + * the device tree. For GPIOs that are controlled by the platform/ec module, we + * allow device tree to set the initial state. + * + * Note the raw defines (e.g. GPIO_OUTPUT) in this file are copies from + * <drivers/gpio.h> + * + * The combined defined (e.g. GPIO_OUT_LOW) have been renamed to fit with + * gpio defined in platform/ec codebase. + */ + +/** Enables pin as input. */ +#define GPIO_INPUT (1U << 8) + +/** Enables pin as output, no change to the output state. */ +#define GPIO_OUTPUT (1U << 9) + +/* Initializes output to a low state. */ +#define GPIO_OUTPUT_INIT_LOW (1U << 10) + +/* Initializes output to a high state. */ +#define GPIO_OUTPUT_INIT_HIGH (1U << 11) + +/** Configures GPIO pin as output and initializes it to a low state. */ +#define GPIO_OUT_LOW (GPIO_OUTPUT | GPIO_OUTPUT_INIT_LOW) + +/** Configures GPIO pin as output and initializes it to a high state. */ +#define GPIO_OUT_HIGH (GPIO_OUTPUT | GPIO_OUTPUT_INIT_HIGH) + +/** Configures GPIO pin as ODR output and initializes it to a low state. */ +#define GPIO_ODR_LOW (GPIO_OUT_LOW | GPIO_OPEN_DRAIN) + +/** Configures GPIO pin as ODR output and initializes it to a high state. */ +#define GPIO_ODR_HIGH (GPIO_OUT_HIGH | GPIO_OPEN_DRAIN) + +#endif /* DT_BINDINGS_GPIO_DEFINES_H_ */ |