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/*
* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*/
/* Implementation of per-board GPIO accessor functions */
#include <common.h>
#include "../../common/lcd/gpinit/gpinit.h"
#include <chromeos/hardware_interface.h>
#define GPIO_ACTIVE_HIGH 0
#define GPIO_ACTIVE_LOW 1
#define GPIO_ACCESSOR(gpio_number, polarity) \
tg2_gpio_direction_input(TEGRA_GPIO_PORT(gpio_number), \
TEGRA_GPIO_BIT(gpio_number)); \
return (polarity) ^ tg2_gpio_get_value(TEGRA_GPIO_PORT(gpio_number), \
TEGRA_GPIO_BIT(gpio_number));
int is_firmware_write_protect_gpio_asserted(void)
{
GPIO_ACCESSOR(TEGRA_GPIO_PH3, GPIO_ACTIVE_LOW)
}
int is_recovery_mode_gpio_asserted(void)
{
GPIO_ACCESSOR(TEGRA_GPIO_PH0, GPIO_ACTIVE_LOW)
}
int is_developer_mode_gpio_asserted(void)
{
GPIO_ACCESSOR(TEGRA_GPIO_PV0, GPIO_ACTIVE_HIGH)
}
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