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/*
* Copyright (c) 2009 Wind River Systems, Inc.
* Tom Rix <Tom.Rix@windriver.com>
*
* SPDX-License-Identifier: GPL-2.0
*
* This work is derived from the linux 2.6.27 kernel source
* To fetch, use the kernel repository
* git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
* Use the v2.6.27 tag.
*
* Below is the original's header including its copyright
*
* linux/arch/arm/plat-omap/gpio.c
*
* Support functions for OMAP GPIO
*
* Copyright (C) 2003-2005 Nokia Corporation
* Written by Juha Yrjölä <juha.yrjola@nokia.com>
*/
#ifndef _GPIO_H
#define _GPIO_H
enum gpio_method {
METHOD_GPIO_24XX = 4,
};
#ifdef CONFIG_DM_GPIO
/* Information about a GPIO bank */
struct omap_gpio_platdata {
int bank_index;
ulong base; /* address of registers in physical memory */
enum gpio_method method;
};
#else
struct gpio_bank {
void *base;
int method;
};
extern const struct gpio_bank *const omap_gpio_bank;
/**
* Check if gpio is valid.
*
* @param gpio GPIO number
* @return 1 if ok, 0 on error
*/
int gpio_is_valid(int gpio);