diff options
author | Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de> | 2007-09-30 20:35:09 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-10-12 23:43:36 +0100 |
commit | 689f2a01e68c0033f59055dd816ff27dc51f9dcc (patch) | |
tree | 4ca8339ec5da01e3cea8be9d5f35676c54bcf261 /include | |
parent | ba7d850a02c7c3357ec488776405470534e7ccf8 (diff) |
[ARM] 4590/1: ns9xxx: add gpio handling functions
This implementation conforms to the general GPIO API
introduced in 2.6.21.
This patch was signed-of by David Brownell before I exported the functions
using EXPORT_SYMBOL.
Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-arm/arch-ns9xxx/gpio.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/include/asm-arm/arch-ns9xxx/gpio.h b/include/asm-arm/arch-ns9xxx/gpio.h new file mode 100644 index 00000000000..adbca08583c --- /dev/null +++ b/include/asm-arm/arch-ns9xxx/gpio.h @@ -0,0 +1,47 @@ +/* + * include/asm-arm/arch-ns9xxx/gpio.h + * + * Copyright (C) 2007 by Digi International Inc. + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. +*/ +#ifndef __ASM_ARCH_GPIO_H +#define __ASM_ARCH_GPIO_H + +#include <asm/errno.h> + +int gpio_request(unsigned gpio, const char *label); + +void gpio_free(unsigned gpio); + +int ns9xxx_gpio_configure(unsigned gpio, int inv, int func); + +int gpio_direction_input(unsigned gpio); + +int gpio_direction_output(unsigned gpio, int value); + +int gpio_get_value(unsigned gpio); + +void gpio_set_value(unsigned gpio, int value); + +/* + * ns9xxx can use gpio pins to trigger an irq, but it's not generic + * enough to be supported by the gpio_to_irq/irq_to_gpio interface + */ +static inline int gpio_to_irq(unsigned gpio) +{ + return -EINVAL; +} + +static inline int irq_to_gpio(unsigned irq) +{ + return -EINVAL; +} + +/* get the cansleep() stubs */ +#include <asm-generic/gpio.h> + +#endif /* ifndef __ASM_ARCH_GPIO_H */ |