2 * Copyright (c) 2009 Wind River Systems, Inc.
3 * Tom Rix <Tom.Rix@windriver.com>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of
8 * the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * This work is derived from the linux 2.6.27 kernel source
21 * To fetch, use the kernel repository
22 * git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
23 * Use the v2.6.27 tag.
25 * Below is the original's header including its copyright
27 * linux/arch/arm/plat-omap/gpio.c
29 * Support functions for OMAP GPIO
31 * Copyright (C) 2003-2005 Nokia Corporation
32 * Written by Juha Yrjölä <juha.yrjola@nokia.com>
34 * This program is free software; you can redistribute it and/or modify
35 * it under the terms of the GNU General Public License version 2 as
36 * published by the Free Software Foundation.
41 #include <asm/arch/cpu.h>
48 extern const struct gpio_bank *const omap_gpio_bank;
50 #define METHOD_GPIO_24XX 4
53 * Check if gpio is valid.
55 * @param gpio GPIO number
56 * @return 1 if ok, 0 on error
58 int gpio_is_valid(int gpio);