76d42c2e3b4b55925f7338b9394040833d5d3923
[openwrt/svn-archive/archive.git] / target / linux / ifxmips / files / include / asm-mips / mach-ifxmips / gpio.h
1 /*
2 * include/asm-mips/mach-ifxmips/gpio.h
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
17 *
18 * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
19 *
20 */
21
22
23 #ifndef _IFXMIPS_GPIO_H_
24 #define _IFXMIPS_GPIO_H_
25
26 #include <asm/ifxmips/ifxmips.h>
27 #include <asm/ifxmips/ifxmips_gpio.h>
28
29 #define GPIO_TO_PORT(x) ((x > 15)?(1):(0))
30 #define GPIO_TO_GPIO(x) ((x > 15)?(x-16):(x))
31
32 static inline int gpio_direction_input(unsigned gpio) {
33 ifxmips_port_set_open_drain(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
34 ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
35 ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
36 ifxmips_port_set_dir_in(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
37 return 0;
38 }
39
40 static inline int gpio_direction_output(unsigned gpio, int value) {
41 ifxmips_port_clear_open_drain(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
42 ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
43 ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
44 ifxmips_port_set_dir_out(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
45 return 0;
46 }
47
48 static inline int gpio_get_value(unsigned gpio) {
49 ifxmips_port_get_input(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
50 return 0;
51 }
52
53 static inline void gpio_set_value(unsigned gpio, int value) {
54 if(value)
55 ifxmips_port_set_output(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
56 else
57 ifxmips_port_clear_output(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
58 }
59
60 static inline int gpio_request(unsigned gpio, const char *label) {
61 return 0;
62 }
63
64 static inline void gpio_free(unsigned gpio) {
65 }
66
67 static inline int gpio_to_irq(unsigned gpio) {
68 return 0;
69 }
70
71 static inline int irq_to_gpio(unsigned irq) {
72 return 0;
73 }
74
75 static inline int gpio_cansleep(unsigned gpio) {
76 return 0;
77 }
78
79 static inline int gpio_get_value_cansleep(unsigned gpio) {
80 might_sleep();
81 return gpio_get_value(gpio);
82 }
83
84 static inline void gpio_set_value_cansleep(unsigned gpio, int value) {
85 might_sleep();
86 gpio_set_value(gpio, value);
87 }
88
89 #endif
90