/* * 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