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/*
* Copyright (c) 2011 The Chromium OS Authors.
* 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
*/
/* Tegra2 pin multiplexing functions */
#include <asm/io.h>
#include <asm/arch/tegra2.h>
#include <asm/arch/pinmux.h>
#include <common.h>
void pinmux_set_tristate(enum pmux_pin pin, int enable)
{
struct pmux_tri_ctlr *pmt = (struct pmux_tri_ctlr *)NV_PA_APB_MISC_BASE;
u32 *tri = &pmt->pmt_tri[TRISTATE_REG(pin)];
u32 reg;
reg = readl(tri);
if (enable)
reg |= TRISTATE_MASK(pin);
else
reg &= ~TRISTATE_MASK(pin);
writel(reg, tri);
}
void pinmux_tristate_enable(enum pmux_pin pin)
{
pinmux_set_tristate(pin, 1);
}
void pinmux_tristate_disable(enum pmux_pin pin)
{
pinmux_set_tristate(pin, 0);
}
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