2 * linux/include/asm-arm/arch-sa1100/gpio.h
4 * SA1100 GPIO wrappers for arch-neutral GPIO calls
6 * Written by Philipp Zabel <philipp.zabel@gmail.com>
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.
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.
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
24 #ifndef __ASM_ARCH_SA1100_GPIO_H
25 #define __ASM_ARCH_SA1100_GPIO_H
27 #include <asm/hardware.h>
29 #include <asm-generic/gpio.h>
31 static inline int gpio_get_value(unsigned gpio)
33 if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
34 return GPLR & GPIO_GPIO(gpio);
36 return __gpio_get_value(gpio);
39 static inline void gpio_set_value(unsigned gpio, int value)
41 if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
43 GPSR = GPIO_GPIO(gpio);
45 GPCR = GPIO_GPIO(gpio);
47 __gpio_set_value(gpio, value);
50 #define gpio_cansleep __gpio_cansleep
52 static inline unsigned gpio_to_irq(unsigned gpio)
55 return IRQ_GPIO0 + gpio;
57 return IRQ_GPIO11 - 11 + gpio;
60 static inline unsigned irq_to_gpio(unsigned irq)
62 if (irq < IRQ_GPIO11_27)
63 return irq - IRQ_GPIO0;
65 return irq - IRQ_GPIO11 + 11;