gpio_mmio32.h

Go to the documentation of this file.

/*
 * Copyright (c) 2016 Linaro Ltd.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_DRIVERS_GPIO_GPIO_MMIO32_H_
#define ZEPHYR_INCLUDE_DRIVERS_GPIO_GPIO_MMIO32_H_
 
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/types.h>
 
extern const struct gpio_driver_api gpio_mmio32_api;
 
struct gpio_mmio32_config {
 /* gpio_driver_config needs to be first */
 struct gpio_driver_config common;
 volatile uint32_t *reg;
 uint32_t mask;
};
 
struct gpio_mmio32_context {
 /* gpio_driver_data needs to be first */
 struct gpio_driver_data common;
 const struct gpio_mmio32_config *config;
};
 
int gpio_mmio32_init(const struct device *dev);
 
#ifdef CONFIG_GPIO_MMIO32
 
#define GPIO_MMIO32_INIT(node_id, _address, _mask) \
static struct gpio_mmio32_context _CONCAT(Z_DEVICE_DT_DEV_ID(node_id), _ctx); \
 \
static const struct gpio_mmio32_config _CONCAT(Z_DEVICE_DT_DEV_ID(node_id), _cfg) = { \
 .common = { \
 .port_pin_mask = _mask, \
 }, \
 .reg = (volatile uint32_t *)_address, \
 .mask = _mask, \
}; \
 \
DEVICE_DT_DEFINE(node_id, \
 &gpio_mmio32_init, \
 NULL, \
 &_CONCAT(Z_DEVICE_DT_DEV_ID(node_id), _ctx), \
 &_CONCAT(Z_DEVICE_DT_DEV_ID(node_id), _cfg), \
 PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE, \
 &gpio_mmio32_api)
 
 
#else /* CONFIG_GPIO_MMIO32 */
 
/* Null definition for when support not configured into kernel */
#define GPIO_MMIO32_INIT(node_id, _address, _mask)
 
#endif
 
 
#endif /* ZEPHYR_INCLUDE_DRIVERS_GPIO_GPIO_MMIO32_H_ */