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[IA64] Hook up gpiolib support

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Allow people to use gpiolib on ia64, mostly for build coverage as it
seems more useful to standardise on availablity of the API than handle
it being optional.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Mark Brown 2011-06-01 21:25:47 +01:00 committed by Tony Luck
parent 55922c9d1b
commit badc144689
2 changed files with 59 additions and 0 deletions
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4
arch/ia64/Kconfig
View file

@ -27,6 +27,7 @@ config IA64
select GENERIC_PENDING_IRQ if SMP
select IRQ_PER_CPU
select GENERIC_IRQ_SHOW
select ARCH_WANT_OPTIONAL_GPIOLIB
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
@ -89,6 +90,9 @@ config GENERIC_TIME_VSYSCALL
config HAVE_SETUP_PER_CPU_AREA
def_bool y
config GENERIC_GPIO
def_bool y
config DMI
bool
default y

55
arch/ia64/include/asm/gpio.h Normal file
View file

@ -0,0 +1,55 @@
/*
* Generic GPIO API implementation for IA-64.
*
* A stright copy of that for PowerPC which was:
*
* Copyright (c) 2007-2008 MontaVista Software, Inc.
*
* Author: Anton Vorontsov <avorontsov@ru.mvista.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.
*/
#ifndef _ASM_IA64_GPIO_H
#define _ASM_IA64_GPIO_H
#include <linux/errno.h>
#include <asm-generic/gpio.h>
#ifdef CONFIG_GPIOLIB
/*
* We don't (yet) implement inlined/rapid versions for on-chip gpios.
* Just call gpiolib.
*/
static inline int gpio_get_value(unsigned int gpio)
{
return __gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned int gpio, int value)
{
__gpio_set_value(gpio, value);
}
static inline int gpio_cansleep(unsigned int gpio)
{
return __gpio_cansleep(gpio);
}
static inline int gpio_to_irq(unsigned int gpio)
{
return __gpio_to_irq(gpio);
}
static inline int irq_to_gpio(unsigned int irq)
{
return -EINVAL;
}
#endif /* CONFIG_GPIOLIB */
#endif /* _ASM_IA64_GPIO_H */