1/* 2 * Copyright (C) 2012 Vikram Narayananan 3 * <vikram186@gmail.com> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 */ 18 19#ifndef _BCM2835_GPIO_H_ 20#define _BCM2835_GPIO_H_ 21 22#define BCM2835_GPIO_BASE 0x20200000 23#define BCM2835_GPIO_COUNT 54 24 25#define BCM2835_GPIO_FSEL_MASK 0x7 26#define BCM2835_GPIO_INPUT 0x0 27#define BCM2835_GPIO_OUTPUT 0x1 28#define BCM2835_GPIO_ALT0 0x4 29#define BCM2835_GPIO_ALT1 0x5 30#define BCM2835_GPIO_ALT2 0x6 31#define BCM2835_GPIO_ALT3 0x7 32#define BCM2835_GPIO_ALT4 0x3 33#define BCM2835_GPIO_ALT5 0x2 34 35#define BCM2835_GPIO_COMMON_BANK(gpio) ((gpio < 32) ? 0 : 1) 36#define BCM2835_GPIO_COMMON_SHIFT(gpio) (gpio & 0x1f) 37 38#define BCM2835_GPIO_FSEL_BANK(gpio) (gpio / 10) 39#define BCM2835_GPIO_FSEL_SHIFT(gpio) ((gpio % 10) * 3) 40 41struct bcm2835_gpio_regs { 42 u32 gpfsel[6]; 43 u32 reserved1; 44 u32 gpset[2]; 45 u32 reserved2; 46 u32 gpclr[2]; 47 u32 reserved3; 48 u32 gplev[2]; 49 u32 reserved4; 50 u32 gpeds[2]; 51 u32 reserved5; 52 u32 gpren[2]; 53 u32 reserved6; 54 u32 gpfen[2]; 55 u32 reserved7; 56 u32 gphen[2]; 57 u32 reserved8; 58 u32 gplen[2]; 59 u32 reserved9; 60 u32 gparen[2]; 61 u32 reserved10; 62 u32 gppud; 63 u32 gppudclk[2]; 64}; 65 66#endif /* _BCM2835_GPIO_H_ */ 67