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