u-boot/arch/arm/mach-bcm283x/include/mach/gpio.h
Alexander Graf 04a993fe11 bcm2835_gpio: Implement GPIOF_FUNC
So far we could only tell the gpio framework that a GPIO was mapped as input or
output, not as alternative function.

This patch adds support for determining whether a function is mapped as
alternative.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2016-09-06 13:18:18 -04:00

71 lines
1.5 KiB
C

/*
* Copyright (C) 2012 Vikram Narayananan
* <vikram186@gmail.com>
* (C) Copyright 2012,2015 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _BCM2835_GPIO_H_
#define _BCM2835_GPIO_H_
#ifndef CONFIG_BCM2835
#define BCM2835_GPIO_BASE 0x3f200000
#else
#define BCM2835_GPIO_BASE 0x20200000
#endif
#define BCM2835_GPIO_COUNT 54
#define BCM2835_GPIO_FSEL_MASK 0x7
#define BCM2835_GPIO_INPUT 0x0
#define BCM2835_GPIO_OUTPUT 0x1
#define BCM2835_GPIO_ALT0 0x4
#define BCM2835_GPIO_ALT1 0x5
#define BCM2835_GPIO_ALT2 0x6
#define BCM2835_GPIO_ALT3 0x7
#define BCM2835_GPIO_ALT4 0x3
#define BCM2835_GPIO_ALT5 0x2
#define BCM2835_GPIO_COMMON_BANK(gpio) ((gpio < 32) ? 0 : 1)
#define BCM2835_GPIO_COMMON_SHIFT(gpio) (gpio & 0x1f)
#define BCM2835_GPIO_FSEL_BANK(gpio) (gpio / 10)
#define BCM2835_GPIO_FSEL_SHIFT(gpio) ((gpio % 10) * 3)
struct bcm2835_gpio_regs {
u32 gpfsel[6];
u32 reserved1;
u32 gpset[2];
u32 reserved2;
u32 gpclr[2];
u32 reserved3;
u32 gplev[2];
u32 reserved4;
u32 gpeds[2];
u32 reserved5;
u32 gpren[2];
u32 reserved6;
u32 gpfen[2];
u32 reserved7;
u32 gphen[2];
u32 reserved8;
u32 gplen[2];
u32 reserved9;
u32 gparen[2];
u32 reserved10;
u32 gppud;
u32 gppudclk[2];
};
/**
* struct bcm2835_gpio_platdata - GPIO platform description
*
* @base: Base address of GPIO controller
*/
struct bcm2835_gpio_platdata {
unsigned long base;
};
int bcm2835_gpio_get_func_id(struct udevice *dev, unsigned gpio);
#endif /* _BCM2835_GPIO_H_ */