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/*
* linux/include/asm-arm/arch-pxa/gpio.h
*
* PXA GPIO wrappers for arch-neutral GPIO calls
*
* Written by Philipp Zabel <philipp.zabel@gmail.com>
*
* 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 __ASM_ARCH_PXA_GPIO_H
#define __ASM_ARCH_PXA_GPIO_H
#include <asm/arch/pxa-regs.h>
#include <asm/irq.h>
#include <asm/hardware.h>
static inline int gpio_request(unsigned gpio, const char *label)
{
return 0;
}
static inline void gpio_free(unsigned gpio)
{
return;
}
static inline int gpio_direction_input(unsigned gpio)
{
return pxa_gpio_mode(gpio | GPIO_IN);
}
static inline int gpio_direction_output(unsigned gpio)
{
return pxa_gpio_mode(gpio | GPIO_OUT);
}
static inline int __gpio_get_value(unsigned gpio)
{
return GPLR(gpio) & GPIO_bit(gpio);
}
#define gpio_get_value(gpio) \
(__builtin_constant_p(gpio) ? \
__gpio_get_value(gpio) : \
pxa_gpio_get_value(gpio))
static inline void __gpio_set_value(unsigned gpio, int value)
{
if (value)
GPSR(gpio) = GPIO_bit(gpio);
else
GPCR(gpio) = GPIO_bit(gpio);
}
#define gpio_set_value(gpio,value) \
(__builtin_constant_p(gpio) ? \
__gpio_set_value(gpio, value) : \
pxa_gpio_set_value(gpio, value))
#include <asm-generic/gpio.h> /* cansleep wrappers */
#define gpio_to_irq(gpio) IRQ_GPIO(gpio)
#define irq_to_gpio(irq) IRQ_TO_GPIO(irq)
#endif
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