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authorUwe Kleine-König <ukleinek@informatik.uni-freiburg.de>2007-09-30 15:35:09 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-10-12 18:43:36 -0400
commit689f2a01e68c0033f59055dd816ff27dc51f9dcc (patch)
tree4ca8339ec5da01e3cea8be9d5f35676c54bcf261 /include
parentba7d850a02c7c3357ec488776405470534e7ccf8 (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.h47
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 000000000000..adbca08583c0
--- /dev/null
+++ b/include/asm-arm/arch-ns9xxx/gpio.h
@@ -0,0 +1,47 @@
1/*
2 * include/asm-arm/arch-ns9xxx/gpio.h
3 *
4 * Copyright (C) 2007 by Digi International Inc.
5 * All rights reserved.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
10*/
11#ifndef __ASM_ARCH_GPIO_H
12#define __ASM_ARCH_GPIO_H
13
14#include <asm/errno.h>
15
16int gpio_request(unsigned gpio, const char *label);
17
18void gpio_free(unsigned gpio);
19
20int ns9xxx_gpio_configure(unsigned gpio, int inv, int func);
21
22int gpio_direction_input(unsigned gpio);
23
24int gpio_direction_output(unsigned gpio, int value);
25
26int gpio_get_value(unsigned gpio);
27
28void gpio_set_value(unsigned gpio, int value);
29
30/*
31 * ns9xxx can use gpio pins to trigger an irq, but it's not generic
32 * enough to be supported by the gpio_to_irq/irq_to_gpio interface
33 */
34static inline int gpio_to_irq(unsigned gpio)
35{
36 return -EINVAL;
37}
38
39static inline int irq_to_gpio(unsigned irq)
40{
41 return -EINVAL;
42}
43
44/* get the cansleep() stubs */
45#include <asm-generic/gpio.h>
46
47#endif /* ifndef __ASM_ARCH_GPIO_H */