[PATCH v2 13/19] OpenRISC: GPIO
From: Jonas Bonn <jonas@southpole.se>
Date: 2011-07-02 21:18:47
Also in:
lkml
Subsystem:
openrisc architecture, the rest · Maintainers:
Jonas Bonn, Stefan Kristiansson, Stafford Horne, Linus Torvalds
Signed-off-by: Jonas Bonn <jonas@southpole.se> --- arch/openrisc/include/asm/gpio.h | 65 ++++++++++++++++++++++++++++++++++++++ 1 files changed, 65 insertions(+), 0 deletions(-) create mode 100644 arch/openrisc/include/asm/gpio.h
diff --git a/arch/openrisc/include/asm/gpio.h b/arch/openrisc/include/asm/gpio.h
new file mode 100644
index 0000000..0b0d174
--- /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 <phoenix@bsemi.com> + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> + * 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 <linux/errno.h> +#include <asm-generic/gpio.h> + +#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 */
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1.7.4.1