65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
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/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <reg.h>
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#include <platform/gpio.h>
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#include <platform/iomap.h>
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/* GPIO that controls the button
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* for FASTBOOT.
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*/
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#define FASTBOOT_KEY_GPIO_ID 58
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/*
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* Returns fastboot button state.
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* Returns 0 if button is not pressed, 1 when pressed.
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*/
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int get_fastboot_key_state(void)
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{
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int ret;
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gpio_tlmm_config(FASTBOOT_KEY_GPIO_ID, 0, GPIO_INPUT, GPIO_PULL_DOWN, GPIO_2MA, GPIO_ENABLE);
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ret = gpio_get_state(FASTBOOT_KEY_GPIO_ID);
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return ret;
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}
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/*
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* Return 1 to trigger to fastboot
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*/
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int fastboot_trigger(void)
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{
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int ret;
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ret = get_fastboot_key_state();
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return (ret);
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}
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