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/*
* include/asm-mips/mach-ifxmips/gpio.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Copyright (C) 2007 John Crispin <blogic@openwrt.org>
*
*/
#ifndef _IFXMIPS_GPIO_H_
#define _IFXMIPS_GPIO_H_
#include <asm/ifxmips/ifxmips.h>
#include <asm/ifxmips/ifxmips_gpio.h>
#define GPIO_TO_PORT(x) ((x > 15)?(1):(0))
#define GPIO_TO_GPIO(x) ((x > 15)?(x-16):(x))
static inline int gpio_direction_input(unsigned gpio) {
ifxmips_port_set_open_drain(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_set_dir_in(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
return 0;
}
static inline int gpio_direction_output(unsigned gpio, int value) {
ifxmips_port_clear_open_drain(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_clear_altsel0(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_clear_altsel1(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
ifxmips_port_set_dir_out(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
return 0;
}
static inline int gpio_get_value(unsigned gpio) {
ifxmips_port_get_input(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
return 0;
}
static inline void gpio_set_value(unsigned gpio, int value) {
if(value)
ifxmips_port_set_output(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
else
ifxmips_port_clear_output(GPIO_TO_PORT(gpio), GPIO_TO_GPIO(gpio));
}
static inline int gpio_request(unsigned gpio, const char *label) {
return 0;
}
static inline void gpio_free(unsigned gpio) {
}
static inline int gpio_to_irq(unsigned gpio) {
return 0;
}
static inline int irq_to_gpio(unsigned irq) {
return 0;
}
static inline int gpio_cansleep(unsigned gpio) {
return 0;
}
static inline int gpio_get_value_cansleep(unsigned gpio) {
might_sleep();
return gpio_get_value(gpio);
}
static inline void gpio_set_value_cansleep(unsigned gpio, int value) {
might_sleep();
gpio_set_value(gpio, value);
}
#endif
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