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/*
* 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);
}
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