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 enum gpio_method { 27 METHOD_GPIO_24XX = 4, 28 }; 29 30 #ifdef CONFIG_DM_GPIO 31 32 /* Information about a GPIO bank */ 33 struct omap_gpio_platdata { 34 int bank_index; 35 ulong base; /* address of registers in physical memory */ 36 enum gpio_method method; 37 }; 38 39 #else 40 41 struct gpio_bank { 42 void *base; 43 int method; 44 }; 45 46 extern const struct gpio_bank *const omap_gpio_bank; 47 48 /** 49 * Check if gpio is valid. 50 * 51 * @param gpio GPIO number 52 * @return 1 if ok, 0 on error 53 */ 54 int gpio_is_valid(int gpio); 55 #endif 56 57 #endif /* _GPIO_H_ */ 58