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Commit 81ee42ba authored by Mark Brown's avatar Mark Brown Committed by Linus Torvalds
Browse files

alpha: hook up gpiolib support 



Allow people to use gpiolib on Alpha if they want to, mostly for build
coverage.  The header is a stright copy of that for Microblaze, which in
turn was taken from PowerPC.

[akpm@linux-foundation.org: define GENERIC_GPIO]
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 81740fc6

arch/alpha/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ config ALPHA 
	select GENERIC_IRQ_PROBE

	select AUTO_IRQ_AFFINITY if SMP

	select GENERIC_IRQ_SHOW

	select ARCH_WANT_OPTIONAL_GPIOLIB

	help

	  The Alpha is a 64-bit general-purpose processor designed and

	  marketed by the Digital Equipment Corporation of blessed memory,
@@ -51,6 +52,9 @@ config GENERIC_CALIBRATE_DELAY 
config GENERIC_CMOS_UPDATE

        def_bool y



config GENERIC_GPIO

	def_bool y



config ZONE_DMA

	bool

	default y

arch/alpha/include/asm/gpio.h

0 → 100644
+55 −0
Original line number Diff line number Diff line 
/*

 * Generic GPIO API implementation for Alpha.

 *

 * 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_ALPHA_GPIO_H

#define _ASM_ALPHA_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_ALPHA_GPIO_H */