2 * Copyright (C) 2012 Vikram Narayananan
3 * <vikram186@gmail.com>
5 * See file CREDITS for list of people who contributed to this
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.
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.
19 #ifndef _BCM2835_GPIO_H_
20 #define _BCM2835_GPIO_H_
22 #define BCM2835_GPIO_BASE 0x20200000
23 #define BCM2835_GPIO_COUNT 54
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
35 #define BCM2835_GPIO_COMMON_BANK(gpio) ((gpio < 32) ? 0 : 1)
36 #define BCM2835_GPIO_COMMON_SHIFT(gpio) (gpio & 0x1f)
38 #define BCM2835_GPIO_FSEL_BANK(gpio) (gpio / 10)
39 #define BCM2835_GPIO_FSEL_SHIFT(gpio) ((gpio % 10) * 3)
41 struct bcm2835_gpio_regs {
66 #endif /* _BCM2835_GPIO_H_ */