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gpio.h
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1 /*
2  * arch/arm/mach-sa1100/include/mach/gpio.h
3  *
4  * SA1100 GPIO wrappers for arch-neutral GPIO calls
5  *
6  * Written by Philipp Zabel <[email protected]>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21  *
22  */
23 
24 #ifndef __ASM_ARCH_SA1100_GPIO_H
25 #define __ASM_ARCH_SA1100_GPIO_H
26 
27 #include <linux/io.h>
28 #include <mach/hardware.h>
29 #include <asm/irq.h>
30 #include <asm-generic/gpio.h>
31 
32 #define __ARM_GPIOLIB_COMPLEX
33 
34 static inline int gpio_get_value(unsigned gpio)
35 {
36  if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
37  return GPLR & GPIO_GPIO(gpio);
38  else
39  return __gpio_get_value(gpio);
40 }
41 
42 static inline void gpio_set_value(unsigned gpio, int value)
43 {
44  if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
45  if (value)
46  GPSR = GPIO_GPIO(gpio);
47  else
48  GPCR = GPIO_GPIO(gpio);
49  else
50  __gpio_set_value(gpio, value);
51 }
52 
53 #define gpio_cansleep __gpio_cansleep
54 
55 #endif