8a96510172b09101901d35dc2d9887bf8ac53301
2 * include/asm-mips/mach-ifxmips/gpio.h
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.
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.
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.
18 * Copyright (C) 2007 John Crispin <blogic@openwrt.org>
22 #ifndef _IFXMIPS_GPIO_H_
23 #define _IFXMIPS_GPIO_H_
25 #include <asm/ifxmips/ifxmips.h>
26 #include <asm/ifxmips/ifxmips_gpio.h>
28 #define GPIO_TO_PORT(x) ((x > 15)?(1):(0))
29 #define GPIO_TO_GPIO(x) ((x > 15)?(x-16):(x))
31 static inline int gpio_direction_input(unsigned gpio
) {
32 ifxmips_port_set_open_drain(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
33 ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
34 ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
35 ifxmips_port_set_dir_in(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
39 static inline int gpio_direction_output(unsigned gpio
, int value
) {
40 ifxmips_port_clear_open_drain(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
41 ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
42 ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
43 ifxmips_port_set_dir_out(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
47 static inline int gpio_get_value(unsigned gpio
) {
48 ifxmips_port_get_input(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
52 static inline void gpio_set_value(unsigned gpio
, int value
) {
54 ifxmips_port_set_output(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
56 ifxmips_port_clear_output(GPIO_TO_PORT(gpio
), GPIO_TO_GPIO(gpio
));
59 static inline int gpio_request(unsigned gpio
, const char *label
) {
63 static inline void gpio_free(unsigned gpio
) {
66 static inline int gpio_to_irq(unsigned gpio
) {
70 static inline int irq_to_gpio(unsigned irq
) {
74 static inline int gpio_cansleep(unsigned gpio
) {
78 static inline int gpio_get_value_cansleep(unsigned gpio
) {
80 return gpio_get_value(gpio
);
83 static inline void gpio_set_value_cansleep(unsigned gpio
, int value
) {
85 gpio_set_value(gpio
, value
);
88 static inline int gpio_is_valid(int number
)
90 return ((unsigned)number
) < 8;