1/* 2 * linux/include/asm-arm/arch-sa1100/gpio.h 3 * 4 * SA1100 GPIO wrappers for arch-neutral GPIO calls 5 * 6 * Written by Philipp Zabel <philipp.zabel@gmail.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24#ifndef __ASM_ARCH_SA1100_GPIO_H 25#define __ASM_ARCH_SA1100_GPIO_H 26 27#include <asm/hardware.h> 28#include <asm/irq.h> 29 30static inline int gpio_request(unsigned gpio, const char *label) 31{ 32 return 0; 33} 34 35static inline void gpio_free(unsigned gpio) 36{ 37 return; 38} 39 40extern int gpio_direction_input(unsigned gpio); 41extern int gpio_direction_output(unsigned gpio, int value); 42 43 44static inline int gpio_get_value(unsigned gpio) 45{ 46 return GPLR & GPIO_GPIO(gpio); 47} 48 49static inline void gpio_set_value(unsigned gpio, int value) 50{ 51 if (value) 52 GPSR = GPIO_GPIO(gpio); 53 else 54 GPCR = GPIO_GPIO(gpio); 55} 56 57#include <asm-generic/gpio.h> /* cansleep wrappers */ 58 59static inline unsigned gpio_to_irq(unsigned gpio) 60{ 61 if (gpio < 11) 62 return IRQ_GPIO0 + gpio; 63 else 64 return IRQ_GPIO11 - 11 + gpio; 65} 66 67static inline unsigned irq_to_gpio(unsigned irq) 68{ 69 if (irq < IRQ_GPIO11_27) 70 return irq - IRQ_GPIO0; 71 else 72 return irq - IRQ_GPIO11 + 11; 73} 74 75#endif 76