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