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1 | /* |
2 | * linux/include/asm-arm/arch-ixp4xx/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 | ||
be509729 | 28 | #include <asm/arch/hardware.h> |
25735d10 MS |
29 | |
30 | static inline int gpio_request(unsigned gpio, const char *label) | |
31 | { | |
32 | return 0; | |
33 | } | |
34 | ||
35 | static inline void gpio_free(unsigned gpio) | |
36 | { | |
37 | return; | |
38 | } | |
39 | ||
40 | static inline int gpio_direction_input(unsigned gpio) | |
41 | { | |
42 | gpio_line_config(gpio, IXP4XX_GPIO_IN); | |
43 | return 0; | |
44 | } | |
45 | ||
46 | static inline int gpio_direction_output(unsigned gpio, int level) | |
47 | { | |
48 | gpio_line_set(gpio, level); | |
49 | gpio_line_config(gpio, IXP4XX_GPIO_OUT); | |
50 | return 0; | |
51 | } | |
52 | ||
53 | static inline int gpio_get_value(unsigned gpio) | |
54 | { | |
55 | int value; | |
56 | ||
57 | gpio_line_get(gpio, &value); | |
58 | ||
59 | return value; | |
60 | } | |
61 | ||
62 | static inline void gpio_set_value(unsigned gpio, int value) | |
63 | { | |
64 | gpio_line_set(gpio, value); | |
65 | } | |
66 | ||
67 | #include <asm-generic/gpio.h> /* cansleep wrappers */ | |
68 | ||
69 | extern int gpio_to_irq(int gpio); | |
70 | extern int irq_to_gpio(int gpio); | |
71 | ||
72 | #endif | |
73 |