1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (c) 2009 Wind River Systems, Inc. 4 * Tom Rix <Tom.Rix@windriver.com> 5 * 6 * This work is derived from the linux 2.6.27 kernel source 7 * To fetch, use the kernel repository 8 * git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 9 * Use the v2.6.27 tag. 10 * 11 * Below is the original's header including its copyright 12 * 13 * linux/arch/arm/plat-omap/gpio.c 14 * 15 * Support functions for OMAP GPIO 16 * 17 * Copyright (C) 2003-2005 Nokia Corporation 18 * Written by Juha Yrjölä <juha.yrjola@nokia.com> 19 */ 20 #ifndef _GPIO_H 21 #define _GPIO_H 22 23 #include <asm/arch/cpu.h> 24 25 #ifdef CONFIG_DM_GPIO 26 27 /* Information about a GPIO bank */ 28 struct omap_gpio_platdata { 29 int bank_index; 30 ulong base; /* address of registers in physical memory */ 31 const char *port_name; 32 }; 33 34 #else 35 36 struct gpio_bank { 37 void *base; 38 }; 39 40 extern const struct gpio_bank *const omap_gpio_bank; 41 42 /** 43 * Check if gpio is valid. 44 * 45 * @param gpio GPIO number 46 * @return 1 if ok, 0 on error 47 */ 48 int gpio_is_valid(int gpio); 49 #endif 50 51 #endif /* _GPIO_H_ */ 52