1 /*
2 * arch/arm/mach-ixp4xx/include/mach/gpio.h
3 *
4 * IXP4XX GPIO wrappers for arch-neutral GPIO calls
5 *
6 * Written by Milan Svoboda <msvoboda@ra.rockwell.com>
7 * Based on PXA implementation by Philipp Zabel <philipp.zabel@gmail.com>
8 *
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.
13 *
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.
18 *
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
22 *
23 */
24
25 #ifndef __ASM_ARCH_IXP4XX_GPIO_H
26 #define __ASM_ARCH_IXP4XX_GPIO_H
27
28 #include <linux/kernel.h>
29 #include <mach/hardware.h>
30
31 #define __ARM_GPIOLIB_COMPLEX
32
gpio_request(unsigned gpio,const char * label)33 static inline int gpio_request(unsigned gpio, const char *label)
34 {
35 return 0;
36 }
37
gpio_free(unsigned gpio)38 static inline void gpio_free(unsigned gpio)
39 {
40 might_sleep();
41
42 return;
43 }
44
gpio_direction_input(unsigned gpio)45 static inline int gpio_direction_input(unsigned gpio)
46 {
47 gpio_line_config(gpio, IXP4XX_GPIO_IN);
48 return 0;
49 }
50
gpio_direction_output(unsigned gpio,int level)51 static inline int gpio_direction_output(unsigned gpio, int level)
52 {
53 gpio_line_set(gpio, level);
54 gpio_line_config(gpio, IXP4XX_GPIO_OUT);
55 return 0;
56 }
57
gpio_get_value(unsigned gpio)58 static inline int gpio_get_value(unsigned gpio)
59 {
60 int value;
61
62 gpio_line_get(gpio, &value);
63
64 return value;
65 }
66
gpio_set_value(unsigned gpio,int value)67 static inline void gpio_set_value(unsigned gpio, int value)
68 {
69 gpio_line_set(gpio, value);
70 }
71
72 #include <asm-generic/gpio.h> /* cansleep wrappers */
73
74 extern int gpio_to_irq(int gpio);
75 #define gpio_to_irq gpio_to_irq
76 extern int irq_to_gpio(unsigned int irq);
77
78 #endif
79
80