| /* |
| * Copyright (c) 2015 Brian Swetland |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files |
| * (the "Software"), to deal in the Software without restriction, |
| * including without limitation the rights to use, copy, modify, merge, |
| * publish, distribute, sublicense, and/or sell copies of the Software, |
| * and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #include <reg.h> |
| #include <platform/lpc43xx-gpio.h> |
| |
| inline int gpio_config(unsigned nr, unsigned flags) { |
| unsigned m = _GPIOm(nr); |
| unsigned n = _GPIOn(nr); |
| if (flags & GPIO_INPUT) { |
| writel(readl(GPIO_DIR(m)) & (~(1 << n)), GPIO_DIR(m)); |
| } else { |
| writel(readl(GPIO_DIR(m)) | (1 << n), GPIO_DIR(m)); |
| } |
| return 0; |
| } |
| |
| inline void gpio_set(unsigned nr, unsigned on) { |
| writel(on, GPIO_WORD(nr)); |
| } |
| |
| inline int gpio_get(unsigned nr) { |
| return readl(GPIO_WORD(nr)) & 1; |
| } |