mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 00:47:26 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
|
|
* Copyright (C) 2008 Atmel Corporation
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
#include <common.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/arch/gpio.h>
|
|
|
|
void portmux_select_peripheral(void *port, unsigned long pin_mask,
|
|
enum portmux_function func, unsigned long flags)
|
|
{
|
|
/* Both pull-up and pull-down set means buskeeper */
|
|
if (flags & PORTMUX_PULL_DOWN)
|
|
gpio_writel(port, PDERS, pin_mask);
|
|
else
|
|
gpio_writel(port, PDERC, pin_mask);
|
|
if (flags & PORTMUX_PULL_UP)
|
|
gpio_writel(port, PUERS, pin_mask);
|
|
else
|
|
gpio_writel(port, PUERC, pin_mask);
|
|
|
|
/* Select drive strength */
|
|
if (flags & PORTMUX_DRIVE_LOW)
|
|
gpio_writel(port, ODCR0S, pin_mask);
|
|
else
|
|
gpio_writel(port, ODCR0C, pin_mask);
|
|
if (flags & PORTMUX_DRIVE_HIGH)
|
|
gpio_writel(port, ODCR1S, pin_mask);
|
|
else
|
|
gpio_writel(port, ODCR1C, pin_mask);
|
|
|
|
/* Select function */
|
|
if (func & PORTMUX_FUNC_B)
|
|
gpio_writel(port, PMR0S, pin_mask);
|
|
else
|
|
gpio_writel(port, PMR0C, pin_mask);
|
|
if (func & PORTMUX_FUNC_C)
|
|
gpio_writel(port, PMR1S, pin_mask);
|
|
else
|
|
gpio_writel(port, PMR1C, pin_mask);
|
|
|
|
/* Disable GPIO (i.e. enable peripheral) */
|
|
gpio_writel(port, GPERC, pin_mask);
|
|
}
|
|
|
|
void portmux_select_gpio(void *port, unsigned long pin_mask,
|
|
unsigned long flags)
|
|
{
|
|
/* Both pull-up and pull-down set means buskeeper */
|
|
if (flags & PORTMUX_PULL_DOWN)
|
|
gpio_writel(port, PDERS, pin_mask);
|
|
else
|
|
gpio_writel(port, PDERC, pin_mask);
|
|
if (flags & PORTMUX_PULL_UP)
|
|
gpio_writel(port, PUERS, pin_mask);
|
|
else
|
|
gpio_writel(port, PUERC, pin_mask);
|
|
|
|
/* Enable open-drain mode if requested */
|
|
if (flags & PORTMUX_OPEN_DRAIN)
|
|
gpio_writel(port, ODMERS, pin_mask);
|
|
else
|
|
gpio_writel(port, ODMERC, pin_mask);
|
|
|
|
/* Select drive strength */
|
|
if (flags & PORTMUX_DRIVE_LOW)
|
|
gpio_writel(port, ODCR0S, pin_mask);
|
|
else
|
|
gpio_writel(port, ODCR0C, pin_mask);
|
|
if (flags & PORTMUX_DRIVE_HIGH)
|
|
gpio_writel(port, ODCR1S, pin_mask);
|
|
else
|
|
gpio_writel(port, ODCR1C, pin_mask);
|
|
|
|
/* Select direction and initial pin state */
|
|
if (flags & PORTMUX_DIR_OUTPUT) {
|
|
if (flags & PORTMUX_INIT_HIGH)
|
|
gpio_writel(port, OVRS, pin_mask);
|
|
else
|
|
gpio_writel(port, OVRC, pin_mask);
|
|
gpio_writel(port, ODERS, pin_mask);
|
|
} else {
|
|
gpio_writel(port, ODERC, pin_mask);
|
|
}
|
|
|
|
/* Enable GPIO */
|
|
gpio_writel(port, GPERS, pin_mask);
|
|
}
|