diff options
Diffstat (limited to 'include/drivers/nxp/gpio/nxp_gpio.h')
| -rw-r--r-- | include/drivers/nxp/gpio/nxp_gpio.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/include/drivers/nxp/gpio/nxp_gpio.h b/include/drivers/nxp/gpio/nxp_gpio.h new file mode 100644 index 0000000..df75840 --- /dev/null +++ b/include/drivers/nxp/gpio/nxp_gpio.h @@ -0,0 +1,53 @@ +/* + * Copyright 2021 NXP + * + * SPDX-License-Identifier: BSD-3-Clause + * + */ + +#ifndef PLAT_GPIO_H +#define PLAT_GPIO_H + +#include <endian.h> +#include <lib/mmio.h> + +/* GPIO Register offset */ +#define GPIO_SEL_MASK 0x7F +#define GPIO_BIT_MASK 0x1F +#define GPDIR_REG_OFFSET 0x0 +#define GPDAT_REG_OFFSET 0x8 + +#define GPIO_ID_BASE_ADDR_SHIFT 5U +#define GPIO_BITS_PER_BASE_REG 32U + +#define GPIO_0 0 +#define GPIO_1 1 +#define GPIO_2 2 +#define GPIO_3 3 + +#define GPIO_SUCCESS 0x0 +#define GPIO_FAILURE 0x1 + +#ifdef NXP_GPIO_BE +#define gpio_read32(a) bswap32(mmio_read_32((uintptr_t)(a))) +#define gpio_write32(a, v) mmio_write_32((uintptr_t)(a), bswap32(v)) +#elif defined(NXP_GPIO_LE) +#define gpio_read32(a) mmio_read_32((uintptr_t)(a)) +#define gpio_write32(a, v) mmio_write_32((uintptr_t)(a), (v)) +#else +#error Please define GPIO register endianness +#endif + +typedef struct { + uintptr_t gpio1_base_addr; + uintptr_t gpio2_base_addr; + uintptr_t gpio3_base_addr; + uintptr_t gpio4_base_addr; +} gpio_init_info_t; + +void gpio_init(gpio_init_info_t *gpio_init_data); +uint32_t *select_gpio_n_bitnum(uint32_t povdd_gpio, uint32_t *bit_num); +int clr_gpio_bit(uint32_t *gpio_base_addr, uint32_t bit_num); +int set_gpio_bit(uint32_t *gpio_base_addr, uint32_t bit_num); + +#endif /* PLAT_GPIO_H */ |