| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015 Brian Swetland |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining |
| 5 | * a copy of this software and associated documentation files |
| 6 | * (the "Software"), to deal in the Software without restriction, |
| 7 | * including without limitation the rights to use, copy, modify, merge, |
| 8 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 9 | * and to permit persons to whom the Software is furnished to do so, |
| 10 | * subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #include <reg.h> |
| 25 | #include <platform/lpc43xx-gpio.h> |
| 26 | |
| 27 | inline int gpio_config(unsigned nr, unsigned flags) { |
| 28 | unsigned m = _GPIOm(nr); |
| 29 | unsigned n = _GPIOn(nr); |
| 30 | if (flags & GPIO_INPUT) { |
| 31 | writel(readl(GPIO_DIR(m)) & (~(1 << n)), GPIO_DIR(m)); |
| 32 | } else { |
| 33 | writel(readl(GPIO_DIR(m)) | (1 << n), GPIO_DIR(m)); |
| 34 | } |
| 35 | return 0; |
| 36 | } |
| 37 | |
| 38 | inline void gpio_set(unsigned nr, unsigned on) { |
| 39 | writel(on, GPIO_WORD(nr)); |
| 40 | } |
| 41 | |
| 42 | inline int gpio_get(unsigned nr) { |
| 43 | return readl(GPIO_WORD(nr)) & 1; |
| 44 | } |