1/* 2 * arch/arm/mach-ixp4xx/include/mach/gpio.h 3 * 4 * IXP4XX GPIO wrappers for arch-neutral GPIO calls 5 * 6 * Written by Milan Svoboda <msvoboda@ra.rockwell.com> 7 * Based on PXA implementation by Philipp Zabel <philipp.zabel@gmail.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 */ 24 25#ifndef __ASM_ARCH_IXP4XX_GPIO_H 26#define __ASM_ARCH_IXP4XX_GPIO_H 27 28#include <linux/kernel.h> 29#include <mach/hardware.h> 30 31static inline int gpio_request(unsigned gpio, const char *label) 32{ 33 return 0; 34} 35 36static inline void gpio_free(unsigned gpio) 37{ 38 might_sleep(); 39 40 return; 41} 42 43static inline int gpio_direction_input(unsigned gpio) 44{ 45 gpio_line_config(gpio, IXP4XX_GPIO_IN); 46 return 0; 47} 48 49static inline int gpio_direction_output(unsigned gpio, int level) 50{ 51 gpio_line_set(gpio, level); 52 gpio_line_config(gpio, IXP4XX_GPIO_OUT); 53 return 0; 54} 55 56static inline int gpio_get_value(unsigned gpio) 57{ 58 int value; 59 60 gpio_line_get(gpio, &value); 61 62 return value; 63} 64 65static inline void gpio_set_value(unsigned gpio, int value) 66{ 67 gpio_line_set(gpio, value); 68} 69 70#include <asm-generic/gpio.h> /* cansleep wrappers */ 71 72extern int gpio_to_irq(int gpio); 73extern int irq_to_gpio(unsigned int irq); 74 75#endif 76