From e480158cc825b45eebcc2ff2ff5e5f7965c3875f Mon Sep 17 00:00:00 2001 From: Jonas Bonn Date: Sat, 4 Jun 2011 22:31:01 +0300 Subject: OpenRISC: GPIO Signed-off-by: Jonas Bonn Reviewed-by: Arnd Bergmann --- arch/openrisc/include/asm/gpio.h | 65 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 arch/openrisc/include/asm/gpio.h (limited to 'arch/openrisc') diff --git a/arch/openrisc/include/asm/gpio.h b/arch/openrisc/include/asm/gpio.h new file mode 100644 index 00000000000..0b0d174f47c --- /dev/null +++ b/arch/openrisc/include/asm/gpio.h @@ -0,0 +1,65 @@ +/* + * OpenRISC Linux + * + * Linux architectural port borrowing liberally from similar works of + * others. All original copyrights apply as per the original source + * declaration. + * + * OpenRISC implementation: + * Copyright (C) 2003 Matjaz Breskvar + * Copyright (C) 2010-2011 Jonas Bonn + * et al. + * + * 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_OPENRISC_GPIO_H +#define __ASM_OPENRISC_GPIO_H + +#include +#include + +#ifdef CONFIG_GPIOLIB + +/* + * OpenRISC (or1k) does not have on-chip GPIO's so there is not really + * any standardized implementation that makes sense here. If passing + * through gpiolib becomes a bottleneck then it may make sense, on a + * case-by-case basis, to implement these inlined/rapid versions. + * + * 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); +} + +/* + * Not implemented, yet. + */ +static inline int gpio_to_irq(unsigned int gpio) +{ + return -ENOSYS; +} + +static inline int irq_to_gpio(unsigned int irq) +{ + return -EINVAL; +} + +#endif /* CONFIG_GPIOLIB */ + +#endif /* __ASM_OPENRISC_GPIO_H */ -- cgit v1.2.3