blob: 11ba6e8cc6a19932723bd90f9e3fc46731ad8704 [file] [log] [blame]
/* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
*
* 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 The Linux Foundation 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 "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* 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.
*/
#include <reg.h>
#include <platform/gpio.h>
#include <platform/iomap.h>
/* GPIO that controls the button
* for FASTBOOT.
*/
#define FASTBOOT_KEY_GPIO_ID 92
/*
* Returns fastboot button state.
* Returns 0 if button is not pressed, 1 when pressed.
*/
int get_fastboot_key_state(void)
{
int ret;
gpio_tlmm_config(FASTBOOT_KEY_GPIO_ID, 0, GPIO_INPUT, GPIO_PULL_DOWN, GPIO_2MA, GPIO_ENABLE);
ret = gpio_get_state(FASTBOOT_KEY_GPIO_ID);
return ret;
}
/*
* Return 1 to trigger to fastboot
*/
int fastboot_trigger(void)
{
int ret;
ret = get_fastboot_key_state();
return (ret);
}