1 /* 2 * Copyright (c) 2009 Wind River Systems, Inc. 3 * Tom Rix <Tom.Rix@windriver.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0 6 * 7 * This work is derived from the linux 2.6.27 kernel source 8 * To fetch, use the kernel repository 9 * git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 10 * Use the v2.6.27 tag. 11 * 12 * Below is the original's header including its copyright 13 * 14 * linux/arch/arm/plat-omap/gpio.c 15 * 16 * Support functions for OMAP GPIO 17 * 18 * Copyright (C) 2003-2005 Nokia Corporation 19 * Written by Juha Yrjölä <juha.yrjola@nokia.com> 20 */ 21 #ifndef _GPIO_H 22 #define _GPIO_H 23 24 #include <asm/arch/cpu.h> 25 26 struct gpio_bank { 27 void *base; 28 int method; 29 }; 30 31 extern const struct gpio_bank *const omap_gpio_bank; 32 33 #define METHOD_GPIO_24XX 4 34 35 /** 36 * Check if gpio is valid. 37 * 38 * @param gpio GPIO number 39 * @return 1 if ok, 0 on error 40 */ 41 int gpio_is_valid(int gpio); 42 #endif /* _GPIO_H_ */ 43