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c3cf06f1a3
All identifiers, regardless of use, that start with two underscores are reserved. This means they can't be used in header guards. The style that this project is now to use the full name of the file in capital letters followed by 'H'. For example, for a file called "uart_example.h", the header guard is UART_EXAMPLE_H. The exceptions are files that are imported from other projects: - CryptoCell driver - dt-bindings folders - zlib headers Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
38 lines
881 B
C
38 lines
881 B
C
/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef GPIO_H
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#define GPIO_H
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#define GPIO_DIR_OUT 0
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#define GPIO_DIR_IN 1
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#define GPIO_LEVEL_LOW 0
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#define GPIO_LEVEL_HIGH 1
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#define GPIO_PULL_NONE 0
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#define GPIO_PULL_UP 1
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#define GPIO_PULL_DOWN 2
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typedef struct gpio_ops {
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int (*get_direction)(int gpio);
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void (*set_direction)(int gpio, int direction);
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int (*get_value)(int gpio);
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void (*set_value)(int gpio, int value);
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void (*set_pull)(int gpio, int pull);
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int (*get_pull)(int gpio);
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} gpio_ops_t;
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int gpio_get_direction(int gpio);
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void gpio_set_direction(int gpio, int direction);
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int gpio_get_value(int gpio);
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void gpio_set_value(int gpio, int value);
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void gpio_set_pull(int gpio, int pull);
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int gpio_get_pull(int gpio);
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void gpio_init(const gpio_ops_t *ops);
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#endif /* GPIO_H */
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