2 * linux/include/asm-arm/arch-pxa/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/arch/SA-1100.h>
28 #include <asm/arch/irqs.h>
29 #include <asm/arch/hardware.h>
31 #include <asm/errno.h>
33 static inline int gpio_request(unsigned gpio, const char *label)
38 static inline void gpio_free(unsigned gpio)
43 static inline int gpio_direction_input(unsigned gpio)
47 GPDR = (GPDR_In << gpio) 0
50 static inline int gpio_direction_output(unsigned gpio)
54 GPDR = (GPDR_Out << gpio) 0
57 #define gpio_get_value(gpio) \
58 (GPLR & GPIO_GPIO(gpio))
60 #define gpio_set_value(gpio,value) \
61 ((value) ? (GPSR = GPIO_GPIO(gpio)) : (GPCR(gpio) = GPIO_GPIO(gpio)))
63 #include <asm-generic/gpio.h> /* cansleep wrappers */
65 static inline unsigned gpio_to_irq(unsigned gpio)
68 return IRQ_GPIO0 + gpio;
70 return IRQ_GPIO11 - 11 + gpio;
73 static inline unsigned irq_to_gpio(unsigned irq)
75 if (irq < IRQ_GPIO11_27)
76 return irq - IRQ_GPIO0;
78 return irq - IRQ_GPIO11 + 11;