Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / include / asm-arm / arch-sa1100 / gpio.h
blobe7a9d26e22a8b0a4baa1d0de08b65d672e418a79
1 /*
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>
28 #include <asm/irq.h>
30 static inline int gpio_request(unsigned gpio, const char *label)
32 return 0;
35 static inline void gpio_free(unsigned gpio)
37 return;
40 extern int gpio_direction_input(unsigned gpio);
41 extern int gpio_direction_output(unsigned gpio, int value);
44 static inline int gpio_get_value(unsigned gpio)
46 return GPLR & GPIO_GPIO(gpio);
49 static inline void gpio_set_value(unsigned gpio, int value)
51 if (value)
52 GPSR = GPIO_GPIO(gpio);
53 else
54 GPCR = GPIO_GPIO(gpio);
57 #include <asm-generic/gpio.h> /* cansleep wrappers */
59 static inline unsigned gpio_to_irq(unsigned gpio)
61 if (gpio < 11)
62 return IRQ_GPIO0 + gpio;
63 else
64 return IRQ_GPIO11 - 11 + gpio;
67 static inline unsigned irq_to_gpio(unsigned irq)
69 if (irq < IRQ_GPIO11_27)
70 return irq - IRQ_GPIO0;
71 else
72 return irq - IRQ_GPIO11 + 11;
75 #endif