ffee0b5e94
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29822 a1c6a512-1295-4272-9138-f99709370657
47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2011 by Amaury Pouly
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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
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "button-target.h"
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#include "system.h"
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#include "system-target.h"
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#include "pinctrl-imx233.h"
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void button_init_device(void)
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{
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}
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int button_read_device(void)
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{
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int res = 0;
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if(!imx233_get_gpio_input_mask(1, 0x40000000))
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res |= BUTTON_VOL_DOWN;
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/* The imx233 uses the voltage on the PSWITCH pin to detect power up/down
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* events as well as recovery mode. Since the power button is the power button
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* and the volume up button is recovery, it is not possible to know whether
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* power button is down when volume up is down (except if there is another
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* method but volume up and power don't seem to be wired to GPIO pins). */
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switch((HW_POWER_STS & HW_POWER_STS__PSWITCH_BM) >> HW_POWER_STS__PSWITCH_BP)
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{
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case 1: res |= BUTTON_POWER; break;
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case 3: res |= BUTTON_VOL_UP; break;
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default: break;
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}
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return res;
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}
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