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https://github.com/AsahiLinux/u-boot
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53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/* Tegra2 pin multiplexing functions */
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#include <asm/io.h>
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#include <asm/arch/tegra2.h>
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#include <asm/arch/pinmux.h>
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#include <common.h>
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void pinmux_set_tristate(enum pmux_pin pin, int enable)
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{
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struct pmux_tri_ctlr *pmt = (struct pmux_tri_ctlr *)NV_PA_APB_MISC_BASE;
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u32 *tri = &pmt->pmt_tri[TRISTATE_REG(pin)];
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u32 reg;
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reg = readl(tri);
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if (enable)
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reg |= TRISTATE_MASK(pin);
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else
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reg &= ~TRISTATE_MASK(pin);
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writel(reg, tri);
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}
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void pinmux_tristate_enable(enum pmux_pin pin)
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{
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pinmux_set_tristate(pin, 1);
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}
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void pinmux_tristate_disable(enum pmux_pin pin)
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{
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pinmux_set_tristate(pin, 0);
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}
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