mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 19:28:36 +00:00
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2006, 2008 Atmel Corporation
|
||
|
|
*
|
||
|
|
* See file CREDITS for list of people who contributed to this
|
||
|
|
* project.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License as
|
||
|
|
* published by the Free Software Foundation; either version 2 of
|
||
|
|
* the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||
|
|
* MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
#include <common.h>
|
||
|
|
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/arch/memory-map.h>
|
||
|
|
#include <asm/arch/gpio.h>
|
||
|
|
|
||
|
|
void portmux_select_peripheral(void *port, unsigned long pin_mask,
|
||
|
|
enum portmux_function func, unsigned long flags)
|
||
|
|
{
|
||
|
|
if (flags & PORTMUX_PULL_UP)
|
||
|
|
pio_writel(port, PUER, pin_mask);
|
||
|
|
else
|
||
|
|
pio_writel(port, PUDR, pin_mask);
|
||
|
|
|
||
|
|
switch (func) {
|
||
|
|
case PORTMUX_FUNC_A:
|
||
|
|
pio_writel(port, ASR, pin_mask);
|
||
|
|
break;
|
||
|
|
case PORTMUX_FUNC_B:
|
||
|
|
pio_writel(port, BSR, pin_mask);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
pio_writel(port, PDR, pin_mask);
|
||
|
|
}
|
||
|
|
|
||
|
|
void portmux_select_gpio(void *port, unsigned long pin_mask,
|
||
|
|
unsigned long flags)
|
||
|
|
{
|
||
|
|
if (flags & PORTMUX_PULL_UP)
|
||
|
|
pio_writel(port, PUER, pin_mask);
|
||
|
|
else
|
||
|
|
pio_writel(port, PUDR, pin_mask);
|
||
|
|
|
||
|
|
if (flags & PORTMUX_OPEN_DRAIN)
|
||
|
|
pio_writel(port, MDER, pin_mask);
|
||
|
|
else
|
||
|
|
pio_writel(port, MDDR, pin_mask);
|
||
|
|
|
||
|
|
if (flags & PORTMUX_DIR_OUTPUT) {
|
||
|
|
if (flags & PORTMUX_INIT_HIGH)
|
||
|
|
pio_writel(port, SODR, pin_mask);
|
||
|
|
else
|
||
|
|
pio_writel(port, CODR, pin_mask);
|
||
|
|
pio_writel(port, OER, pin_mask);
|
||
|
|
} else {
|
||
|
|
pio_writel(port, ODR, pin_mask);
|
||
|
|
}
|
||
|
|
|
||
|
|
pio_writel(port, PER, pin_mask);
|
||
|
|
}
|
||
|
|
|
||
|
|
void pio_set_output_value(unsigned int pin, int value)
|
||
|
|
{
|
||
|
|
void *port = pio_pin_to_port(pin);
|
||
|
|
|
||
|
|
if (!port)
|
||
|
|
panic("Invalid GPIO pin %u\n", pin);
|
||
|
|
|
||
|
|
__pio_set_output_value(port, pin & 0x1f, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
int pio_get_input_value(unsigned int pin)
|
||
|
|
{
|
||
|
|
void *port = pio_pin_to_port(pin);
|
||
|
|
|
||
|
|
if (!port)
|
||
|
|
panic("Invalid GPIO pin %u\n", pin);
|
||
|
|
|
||
|
|
return __pio_get_input_value(port, pin & 0x1f);
|
||
|
|
}
|