Merge branch 'next' of git://selinuxproject.org/~jmorris/linux-security
[linux-btrfs-devel.git] / arch / arm / mach-ixp4xx / include / mach / gpio.h
bloba5f87ded2f28bd8e039d8c09ac04db6e8fc43d50
1 /*
2 * arch/arm/mach-ixp4xx/include/mach/gpio.h
4 * IXP4XX GPIO wrappers for arch-neutral GPIO calls
6 * Written by Milan Svoboda <msvoboda@ra.rockwell.com>
7 * Based on PXA implementation by Philipp Zabel <philipp.zabel@gmail.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #ifndef __ASM_ARCH_IXP4XX_GPIO_H
26 #define __ASM_ARCH_IXP4XX_GPIO_H
28 #include <linux/kernel.h>
29 #include <mach/hardware.h>
31 static inline int gpio_request(unsigned gpio, const char *label)
33 return 0;
36 static inline void gpio_free(unsigned gpio)
38 might_sleep();
40 return;
43 static inline int gpio_direction_input(unsigned gpio)
45 gpio_line_config(gpio, IXP4XX_GPIO_IN);
46 return 0;
49 static inline int gpio_direction_output(unsigned gpio, int level)
51 gpio_line_set(gpio, level);
52 gpio_line_config(gpio, IXP4XX_GPIO_OUT);
53 return 0;
56 static inline int gpio_get_value(unsigned gpio)
58 int value;
60 gpio_line_get(gpio, &value);
62 return value;
65 static inline void gpio_set_value(unsigned gpio, int value)
67 gpio_line_set(gpio, value);
70 #include <asm-generic/gpio.h> /* cansleep wrappers */
72 extern int gpio_to_irq(int gpio);
73 extern int irq_to_gpio(unsigned int irq);
75 #endif