| /* |
| * Copyright (c) 2016 Linaro Ltd. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef _GPIO_MMIO32_H_ |
| #define _GPIO_MMIO32_H_ |
| |
| #include <device.h> |
| #include <gpio.h> |
| #include <zephyr/types.h> |
| |
| struct gpio_mmio32_config { |
| volatile u32_t *reg; |
| u32_t mask; |
| }; |
| |
| struct gpio_mmio32_context { |
| const struct gpio_mmio32_config *config; |
| u32_t invert; /* Mask of 'reg' bits that should be inverted */ |
| }; |
| |
| int gpio_mmio32_init(struct device *dev); |
| |
| #ifdef CONFIG_GPIO_MMIO32 |
| |
| /** |
| * Create a device object for accessing a simple 32-bit i/o register using the |
| * same APIs as GPIO drivers. |
| * |
| * @param _dev_name Device name. |
| * @param _drv_name The name this instance of the driver exposes to the system. |
| * @param _address The address of the 32-bit i/o register the device will |
| * provide access to. |
| * @param _mask Mask of bits in the register that it is valid to access. |
| * E.g. 0xffffffffu to allow access to all of them. |
| * |
| * @see DEVICE_INIT |
| */ |
| #define GPIO_MMIO32_INIT(_dev_name, _drv_name, _address, _mask) \ |
| \ |
| static struct gpio_mmio32_context _dev_name##_dev_data; \ |
| \ |
| static const struct gpio_mmio32_config _dev_name##_dev_cfg = { \ |
| .reg = (volatile u32_t *)_address, \ |
| .mask = _mask, \ |
| }; \ |
| \ |
| DEVICE_INIT(_dev_name, _drv_name, \ |
| &gpio_mmio32_init, \ |
| &_dev_name##_dev_data, \ |
| &_dev_name##_dev_cfg, \ |
| PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE) |
| |
| #else /* CONFIG_GPIO_MMIO32 */ |
| |
| /* Null definition for when support not configured into kernel */ |
| #define GPIO_MMIO32_INIT(_dev_name, _drv_name, _address, _mask) |
| |
| #endif |
| |
| |
| #endif /* _GPIO_MMIO32_H_ */ |