/* * (C) Copyright 2010 * Michael Kurz <michi.kurz@googlemail.com>. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #ifndef _AR71XX_GPIO_H #define _AR71XX_GPIO_H #include <common.h> #include <asm/ar71xx.h> static inline void ar71xx_setpin(uint8_t pin, uint8_t state) { uint32_t reg = readl(KSEG1ADDR(AR71XX_GPIO_BASE + GPIO_REG_OUT)); if (state != 0) { reg |= (1 << pin); } else { reg &= ~(1 << pin); } writel(reg, KSEG1ADDR(AR71XX_GPIO_BASE + GPIO_REG_OUT)); readl(KSEG1ADDR(AR71XX_GPIO_BASE + GPIO_REG_OUT)); } static inline uint32_t ar71xx_getpin(uint8_t pin) { uint32_t reg = readl(KSEG1ADDR(AR71XX_GPIO_BASE + GPIO_REG_IN)); return (((reg & (1 << pin)) != 0) ? 1 : 0); } static inline void ar71xx_setpindir(uint8_t pin, uint8_t direction) { uint32_t reg = readl(KSEG1ADDR(AR71XX_GPIO_BASE + GPIO_REG_OE)); if (direction != 0) { reg |= (1 << pin); } else { reg &= ~(1 << pin); } writel(reg, KSEG1ADDR(AR71XX_GPIO_BASE + GPIO_REG_OE)); readl(KSEG1ADDR(AR71XX_GPIO_BASE + GPIO_REG_OE)); } #endif /* AR71XX_GPIO_H */