gpio_mmio32.h

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/*
 * 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>
 
#ifdef __cplusplus
extern "C" {
#endif
 
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
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_DRIVERS_GPIO_GPIO_MMIO32_H_ */