You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.9 KiB
73 lines
1.9 KiB
18 years ago
|
/*
|
||
|
|
* 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/arch/irqs.h>
|
||
|
|
#include <asm/arch/hardware.h>
|
||
|
|
|
||
|
|
#include <asm/errno.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)
|
||
|
|
{
|
||
|
|
if (gpio > PXA_LAST_GPIO)
|
||
|
|
return -EINVAL;
|
||
|
|
pxa_gpio_mode(gpio | GPIO_IN);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int gpio_direction_output(unsigned gpio)
|
||
|
|
{
|
||
|
|
if (gpio > PXA_LAST_GPIO)
|
||
|
|
return -EINVAL;
|
||
|
|
pxa_gpio_mode(gpio | GPIO_OUT);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* REVISIT these macros are correct, but suffer code explosion
|
||
|
|
* for non-constant parameters. Provide out-line versions too.
|
||
|
|
*/
|
||
|
|
#define gpio_get_value(gpio) \
|
||
|
|
(GPLR(gpio) & GPIO_bit(gpio))
|
||
|
|
|
||
|
|
#define gpio_set_value(gpio,value) \
|
||
|
|
((value) ? (GPSR(gpio) = GPIO_bit(gpio)):(GPCR(gpio) = GPIO_bit(gpio)))
|
||
|
|
|
||
|
|
#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
|