/* * * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de> * * See file CREDITS for list of people who contributed to this * project. * * 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 */ #ifndef __MXC_GPIO_H #define __MXC_GPIO_H /* Converts a GPIO port number and the internal bit position * to the GPIO number */ #define MXC_GPIO_PORT_TO_NUM(port, bit) (((port - 1) << 5) + (bit & 0x1f)) enum mxc_gpio_direction { MXC_GPIO_DIRECTION_IN, MXC_GPIO_DIRECTION_OUT, }; #ifdef CONFIG_MXC_GPIO extern int mxc_gpio_direction(unsigned int gpio, enum mxc_gpio_direction direction); extern void mxc_gpio_set(unsigned int gpio, unsigned int value); extern int mxc_gpio_get(unsigned int gpio); #else static inline int mxc_gpio_direction(unsigned int gpio, enum mxc_gpio_direction direction) { return 1; } static inline int mxc_gpio_get(unsigned int gpio) { return 1; } static inline void mxc_gpio_set(unsigned int gpio, unsigned int value) { } #endif #endif