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/*
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* linux / include / asm - arm / arch - sa1100 / gpio . h
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*
* SA1100 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_SA1100_GPIO_H
# define __ASM_ARCH_SA1100_GPIO_H
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# include <asm/hardware.h>
# include <asm/irq.h>
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static inline int gpio_request ( unsigned gpio , const char * label )
{
return 0 ;
}
static inline void gpio_free ( unsigned gpio )
{
return ;
}
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extern int gpio_direction_input ( unsigned gpio ) ;
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extern int gpio_direction_output ( unsigned gpio , int value ) ;
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static inline int gpio_get_value ( unsigned gpio )
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{
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return GPLR & GPIO_GPIO ( gpio ) ;
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}
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static inline void gpio_set_value ( unsigned gpio , int value )
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{
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if ( value )
GPSR = GPIO_GPIO ( gpio ) ;
else
GPCR = GPIO_GPIO ( gpio ) ;
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}
# include <asm-generic/gpio.h> /* cansleep wrappers */
static inline unsigned gpio_to_irq ( unsigned gpio )
{
if ( gpio < 11 )
return IRQ_GPIO0 + gpio ;
else
return IRQ_GPIO11 - 11 + gpio ;
}
static inline unsigned irq_to_gpio ( unsigned irq )
{
if ( irq < IRQ_GPIO11_27 )
return irq - IRQ_GPIO0 ;
else
return irq - IRQ_GPIO11 + 11 ;
}
# endif