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/*
* arch/arm/mach-tegra/include/mach/gpio.h
*
* Copyright (C) 2010 Google, Inc.
*
* Author:
* Erik Gilling <konkers@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
*/
#ifndef __MACH_TEGRA_GPIO_H
#define __MACH_TEGRA_GPIO_H
#include <mach/irqs.h>
#define TEGRA_NR_GPIOS INT_GPIO_NR
#define ARCH_NR_GPIOS (TEGRA_NR_GPIOS + 128)
#include <asm-generic/gpio.h>
#define gpio_get_value __gpio_get_value
#define gpio_set_value __gpio_set_value
#define gpio_cansleep __gpio_cansleep
#define TEGRA_GPIO_TO_IRQ(gpio) (INT_GPIO_BASE + (gpio))
#define TEGRA_IRQ_TO_GPIO(irq) ((gpio) - INT_GPIO_BASE)
static inline int gpio_to_irq(unsigned int gpio)
{
/* SOC gpio */
if (gpio < TEGRA_NR_GPIOS)
return INT_GPIO_BASE + gpio;
/* For non soc gpio, the external peripheral driver need to
* provide the implementation */
return __gpio_to_irq(gpio);
}
static inline int irq_to_gpio(unsigned int irq)
{
/* SOC gpio */
if ((irq >= INT_GPIO_BASE) && (irq < INT_GPIO_BASE + INT_GPIO_NR))
return irq - INT_GPIO_BASE;
/* we don't supply reverse mappings for non-SOC gpios */
return -EIO;
}
void tegra_gpio_enable(int gpio);
void tegra_gpio_disable(int gpio);
#endif
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