This adds an enum for each pin and some functions for changing the pin muxing setup. Signed-off-by: Simon Glass <sjg@chromium.org>master
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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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