Pankaj Gupta | b480642 | 2020-12-09 14:02:39 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2021 NXP |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #ifndef PLAT_GPIO_H |
| 9 | #define PLAT_GPIO_H |
| 10 | |
| 11 | #include <endian.h> |
| 12 | #include <lib/mmio.h> |
| 13 | |
| 14 | /* GPIO Register offset */ |
| 15 | #define GPIO_SEL_MASK 0x7F |
| 16 | #define GPIO_BIT_MASK 0x1F |
| 17 | #define GPDIR_REG_OFFSET 0x0 |
| 18 | #define GPDAT_REG_OFFSET 0x8 |
| 19 | |
| 20 | #define GPIO_ID_BASE_ADDR_SHIFT 5U |
| 21 | #define GPIO_BITS_PER_BASE_REG 32U |
| 22 | |
| 23 | #define GPIO_0 0 |
| 24 | #define GPIO_1 1 |
| 25 | #define GPIO_2 2 |
| 26 | #define GPIO_3 3 |
| 27 | |
| 28 | #define GPIO_SUCCESS 0x0 |
| 29 | #define GPIO_FAILURE 0x1 |
| 30 | |
| 31 | #ifdef NXP_GPIO_BE |
| 32 | #define gpio_read32(a) bswap32(mmio_read_32((uintptr_t)(a))) |
| 33 | #define gpio_write32(a, v) mmio_write_32((uintptr_t)(a), bswap32(v)) |
| 34 | #elif defined(NXP_GPIO_LE) |
| 35 | #define gpio_read32(a) mmio_read_32((uintptr_t)(a)) |
| 36 | #define gpio_write32(a, v) mmio_write_32((uintptr_t)(a), (v)) |
| 37 | #else |
| 38 | #error Please define GPIO register endianness |
| 39 | #endif |
| 40 | |
| 41 | typedef struct { |
| 42 | uintptr_t gpio1_base_addr; |
| 43 | uintptr_t gpio2_base_addr; |
| 44 | uintptr_t gpio3_base_addr; |
| 45 | uintptr_t gpio4_base_addr; |
| 46 | } gpio_init_info_t; |
| 47 | |
| 48 | void gpio_init(gpio_init_info_t *gpio_init_data); |
| 49 | uint32_t *select_gpio_n_bitnum(uint32_t povdd_gpio, uint32_t *bit_num); |
| 50 | int clr_gpio_bit(uint32_t *gpio_base_addr, uint32_t bit_num); |
| 51 | int set_gpio_bit(uint32_t *gpio_base_addr, uint32_t bit_num); |
| 52 | |
| 53 | #endif /* PLAT_GPIO_H */ |