Commit e480158cc825b45eebcc2ff2ff5e5f7965c3875f
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OpenRISC: GPIO
Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
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arch/openrisc/include/asm/gpio.h
| 1 | +/* | |
| 2 | + * OpenRISC Linux | |
| 3 | + * | |
| 4 | + * Linux architectural port borrowing liberally from similar works of | |
| 5 | + * others. All original copyrights apply as per the original source | |
| 6 | + * declaration. | |
| 7 | + * | |
| 8 | + * OpenRISC implementation: | |
| 9 | + * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> | |
| 10 | + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> | |
| 11 | + * et al. | |
| 12 | + * | |
| 13 | + * This program is free software; you can redistribute it and/or modify | |
| 14 | + * it under the terms of the GNU General Public License as published by | |
| 15 | + * the Free Software Foundation; either version 2 of the License, or | |
| 16 | + * (at your option) any later version. | |
| 17 | + */ | |
| 18 | + | |
| 19 | +#ifndef __ASM_OPENRISC_GPIO_H | |
| 20 | +#define __ASM_OPENRISC_GPIO_H | |
| 21 | + | |
| 22 | +#include <linux/errno.h> | |
| 23 | +#include <asm-generic/gpio.h> | |
| 24 | + | |
| 25 | +#ifdef CONFIG_GPIOLIB | |
| 26 | + | |
| 27 | +/* | |
| 28 | + * OpenRISC (or1k) does not have on-chip GPIO's so there is not really | |
| 29 | + * any standardized implementation that makes sense here. If passing | |
| 30 | + * through gpiolib becomes a bottleneck then it may make sense, on a | |
| 31 | + * case-by-case basis, to implement these inlined/rapid versions. | |
| 32 | + * | |
| 33 | + * Just call gpiolib. | |
| 34 | + */ | |
| 35 | +static inline int gpio_get_value(unsigned int gpio) | |
| 36 | +{ | |
| 37 | + return __gpio_get_value(gpio); | |
| 38 | +} | |
| 39 | + | |
| 40 | +static inline void gpio_set_value(unsigned int gpio, int value) | |
| 41 | +{ | |
| 42 | + __gpio_set_value(gpio, value); | |
| 43 | +} | |
| 44 | + | |
| 45 | +static inline int gpio_cansleep(unsigned int gpio) | |
| 46 | +{ | |
| 47 | + return __gpio_cansleep(gpio); | |
| 48 | +} | |
| 49 | + | |
| 50 | +/* | |
| 51 | + * Not implemented, yet. | |
| 52 | + */ | |
| 53 | +static inline int gpio_to_irq(unsigned int gpio) | |
| 54 | +{ | |
| 55 | + return -ENOSYS; | |
| 56 | +} | |
| 57 | + | |
| 58 | +static inline int irq_to_gpio(unsigned int irq) | |
| 59 | +{ | |
| 60 | + return -EINVAL; | |
| 61 | +} | |
| 62 | + | |
| 63 | +#endif /* CONFIG_GPIOLIB */ | |
| 64 | + | |
| 65 | +#endif /* __ASM_OPENRISC_GPIO_H */ |