linux/arch/arm/include/asm/gpio.h

#ifndef _ARCH_ARM_GPIO_H
#define _ARCH_ARM_GPIO_H

#if CONFIG_ARCH_NR_GPIO > 0
#define ARCH_NR_GPIOS CONFIG_ARCH_NR_GPIO
#endif

/* Note: this may rely upon the value of ARCH_NR_GPIOS set in mach/gpio.h */
#include <asm-generic/gpio.h>

/* The trivial gpiolib dispatchers */
#define gpio_get_value  __gpio_get_value
#define gpio_set_value  __gpio_set_value
#define gpio_cansleep   __gpio_cansleep

/*
 * Provide a default gpio_to_irq() which should satisfy every case.
 * However, some platforms want to do this differently, so allow them
 * to override it.
 */
#ifndef gpio_to_irq
#define gpio_to_irq	__gpio_to_irq
#endif

#endif /* _ARCH_ARM_GPIO_H */
[PATCH] GPIO core This defines a simple and minimalist programming interface for GPIO APIs: - Documentation/gpio.txt ... describes things (read it) - include/asm-arm/gpio.h ... defines the ARM hook, which just punts to <asm/arch/gpio.h> for any implementation - include/asm-generic/gpio.h ... implement "can sleep" variants as calling the normal ones, for systems that don't handle i2c expanders. The immediate need for such a cross-architecture API convention is to support drivers that work the same on AT91 ARM and AVR32 AP7000 chips, which embed many of the same controllers but have different CPUs. However, several other users have been reported, including a driver for a hardware watchdog chip and some handhelds.org multi-CPU button drivers. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2007-02-12 08:53:11 +00:00			`#ifndef _ARCH_ARM_GPIO_H`
			`#define _ARCH_ARM_GPIO_H`

ARM: 7240/1: Make ARCH_NR_GPIO a Kconfig variable Change ARCH_NR_GPIO into a Kconfig variable as suggested by Russel King. This makes ARCH_NR_GPIO single zImage friendly. The default value for tegra is defined as well. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2011-12-21 09:48:45 +00:00			`#if CONFIG_ARCH_NR_GPIO > 0`
ARM: 7271/1: Fix typo in conversion of ARCH_NR_GPIOS to Kconfig Commit 44986ab "ARM: 7240/1: Make ARCH_NR_GPIO a Kconfig variable" spelled ARCH_NR_GPIOS as ARCH_NR_GPIO, hence making the change ineffective. This change fixes that. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2012-01-05 20:36:27 +00:00			`#define ARCH_NR_GPIOS CONFIG_ARCH_NR_GPIO`
ARM: 7240/1: Make ARCH_NR_GPIO a Kconfig variable Change ARCH_NR_GPIO into a Kconfig variable as suggested by Russel King. This makes ARCH_NR_GPIO single zImage friendly. The default value for tegra is defined as well. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2011-12-21 09:48:45 +00:00			`#endif`

ARM: gpio: consolidate trivial gpiolib implementations Consolidate 24 trivial gpiolib implementions out of mach/gpio.h into asm/gpio.h. This is basically the include of asm-generic/gpio.h and the definition of gpio_get_value, gpio_set_value, and gpio_cansleep as described in Documentation/gpio.txt Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Tested-by: David Brown <davidb@codeaurora.org> Acked-by: David Brown <davidb@codeaurora.org> Tested-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2011-07-26 10:04:51 +00:00			`/* Note: this may rely upon the value of ARCH_NR_GPIOS set in mach/gpio.h */`
			`#include <asm-generic/gpio.h>`

			`/* The trivial gpiolib dispatchers */`
			`#define gpio_get_value __gpio_get_value`
			`#define gpio_set_value __gpio_set_value`
			`#define gpio_cansleep __gpio_cansleep`

ARM: gpio: consolidate gpio_to_irq Many of the gpio_to_irq implementations use the gpiolib version of this function. Provide the standard gpiolib gpio_to_irq() for everyone, but allow platforms to override it if they wish. Add the neccessary overrides for those platforms which do not use the standard definition. Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2011-07-26 10:29:42 +00:00			`/*`
			`* Provide a default gpio_to_irq() which should satisfy every case.`
			`* However, some platforms want to do this differently, so allow them`
			`* to override it.`
			`*/`
			`#ifndef gpio_to_irq`
			`#define gpio_to_irq __gpio_to_irq`
			`#endif`

[PATCH] GPIO core This defines a simple and minimalist programming interface for GPIO APIs: - Documentation/gpio.txt ... describes things (read it) - include/asm-arm/gpio.h ... defines the ARM hook, which just punts to <asm/arch/gpio.h> for any implementation - include/asm-generic/gpio.h ... implement "can sleep" variants as calling the normal ones, for systems that don't handle i2c expanders. The immediate need for such a cross-architecture API convention is to support drivers that work the same on AT91 ARM and AVR32 AP7000 chips, which embed many of the same controllers but have different CPUs. However, several other users have been reported, including a driver for a hardware watchdog chip and some handhelds.org multi-CPU button drivers. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2007-02-12 08:53:11 +00:00			`#endif /* _ARCH_ARM_GPIO_H */`