diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-05-24 17:12:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-25 08:39:38 -0700 |
| commit | 81ee42baa433881bcb471aa6366e2f885a33f2fb (patch) | |
| tree | e53b8d8a328d86fef51e992d9afb5cc9f4b4f08e /arch/alpha | |
| parent | 81740fc6b2144f5d197affb10f3c4062fddf21e4 (diff) | |
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: Mark 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: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/Kconfig | 4 | ||||
| -rw-r--r-- | arch/alpha/include/asm/gpio.h | 55 |
2 files changed, 59 insertions, 0 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 9808998cc07..e3a82775f9d 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -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 diff --git a/arch/alpha/include/asm/gpio.h b/arch/alpha/include/asm/gpio.h new file mode 100644 index 00000000000..7dc6a6343c0 --- /dev/null +++ b/arch/alpha/include/asm/gpio.h @@ -0,0 +1,55 @@ +/* + * 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 */ |