upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
1.7 KiB
70 lines
1.7 KiB
/*
|
|
* nios2 gpio driver
|
|
*
|
|
* This gpio core is described in http://nioswiki.com/GPIO
|
|
* bit[0] data
|
|
* bit[1] output enable
|
|
*
|
|
* when CONFIG_SYS_GPIO_BASE is not defined, board may provide
|
|
* its own driver.
|
|
*
|
|
* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef _ASM_NIOS2_GPIO_H_
|
|
#define _ASM_NIOS2_GPIO_H_
|
|
|
|
#ifdef CONFIG_SYS_GPIO_BASE
|
|
#include <asm/io.h>
|
|
|
|
static inline int gpio_request(unsigned gpio, const char *label)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int gpio_free(unsigned gpio)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int gpio_direction_input(unsigned gpio)
|
|
{
|
|
writel(1, CONFIG_SYS_GPIO_BASE + (gpio << 2));
|
|
return 0;
|
|
}
|
|
|
|
static inline int gpio_direction_output(unsigned gpio, int value)
|
|
{
|
|
writel(value ? 3 : 2, CONFIG_SYS_GPIO_BASE + (gpio << 2));
|
|
return 0;
|
|
}
|
|
|
|
static inline int gpio_get_value(unsigned gpio)
|
|
{
|
|
return readl(CONFIG_SYS_GPIO_BASE + (gpio << 2));
|
|
}
|
|
|
|
static inline void gpio_set_value(unsigned gpio, int value)
|
|
{
|
|
writel(value ? 3 : 2, CONFIG_SYS_GPIO_BASE + (gpio << 2));
|
|
}
|
|
|
|
static inline int gpio_is_valid(int number)
|
|
{
|
|
return ((unsigned)number) < CONFIG_SYS_GPIO_WIDTH;
|
|
}
|
|
#else
|
|
extern int gpio_request(unsigned gpio, const char *label);
|
|
extern int gpio_free(unsigned gpio);
|
|
extern int gpio_direction_input(unsigned gpio);
|
|
extern int gpio_direction_output(unsigned gpio, int value);
|
|
extern int gpio_get_value(unsigned gpio);
|
|
extern void gpio_set_value(unsigned gpio, int value);
|
|
extern int gpio_is_valid(int number);
|
|
#endif /* CONFIG_SYS_GPIO_BASE */
|
|
|
|
#endif /* _ASM_NIOS2_GPIO_H_ */
|
|
|