From 81ee42baa433881bcb471aa6366e2f885a33f2fb Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 24 May 2011 17:12:57 -0700 Subject: [PATCH] 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 Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Acked-by: Grant Likely Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/Kconfig | 4 +++ arch/alpha/include/asm/gpio.h | 55 +++++++++++++++++++++++++++++++++++ 2 files changed, 59 insertions(+) create mode 100644 arch/alpha/include/asm/gpio.h 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 + * + * 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 +#include + +#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 */ -- 2.20.1