4c58ad26ba
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21344 a1c6a512-1295-4272-9138-f99709370657
124 lines
3.2 KiB
C
124 lines
3.2 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) 2008 by Mark Arigo
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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 "system.h"
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#include "button.h"
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#include "backlight.h"
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#include "backlight-target.h"
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#include "synaptics-mep.h"
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#define LOGF_ENABLE
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#include "logf.h"
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static int int_btn = BUTTON_NONE;
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#ifndef BOOTLOADER
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void button_init_device(void)
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{
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/* enable touchpad leds */
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GPIOA_ENABLE |= BUTTONLIGHT_ALL;
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GPIOA_OUTPUT_EN |= BUTTONLIGHT_ALL;
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/* enable touchpad */
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GPO32_ENABLE |= 0x40000000;
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GPO32_VAL &= ~0x40000000;
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/* enable ACK, CLK, DATA lines */
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GPIOD_ENABLE |= (0x1 | 0x2 | 0x4);
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GPIOD_OUTPUT_EN |= 0x1; /* ACK */
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GPIOD_OUTPUT_VAL |= 0x1; /* high */
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GPIOD_OUTPUT_EN &= ~0x2; /* CLK */
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GPIOD_OUTPUT_EN |= 0x4; /* DATA */
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GPIOD_OUTPUT_VAL |= 0x4; /* high */
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if (!touchpad_init())
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{
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logf("touchpad not ready");
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}
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}
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/*
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* Button interrupt handler
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*/
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void button_int(void)
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{
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char data[4];
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int val;
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int_btn = BUTTON_NONE;
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val = touchpad_read_device(data, 4);
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if (val == MEP_BUTTON_HEADER)
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{
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/* Buttons packet - touched one of the 5 "buttons" */
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if (data[1] & 0x1) int_btn |= BUTTON_PLAY;
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if (data[1] & 0x2) int_btn |= BUTTON_MENU;
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if (data[1] & 0x4) int_btn |= BUTTON_LEFT;
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if (data[1] & 0x8) int_btn |= BUTTON_DISPLAY;
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if (data[2] & 0x1) int_btn |= BUTTON_RIGHT;
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}
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else if (val == MEP_ABSOLUTE_HEADER)
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{
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/* Absolute packet - the finger is on the vertical strip.
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Position ranges from 1-4095, with 1 at the bottom. */
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val = ((data[1] >> 4) << 8) | data[2]; /* position */
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if ((val > 0) && (val <= 1365))
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int_btn |= BUTTON_DOWN;
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else if ((val > 1365) && (val <= 2730))
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int_btn |= BUTTON_SELECT;
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else if ((val > 2730) && (val <= 4095))
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int_btn |= BUTTON_UP;
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}
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}
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#else
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void button_init_device(void){}
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#endif /* bootloader */
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/*
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* Get button pressed from hardware
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*/
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int button_read_device(void)
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{
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int btn = int_btn;
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if(button_hold())
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return BUTTON_NONE;
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if (~GPIOA_INPUT_VAL & 0x40)
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btn |= BUTTON_POWER;
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return btn;
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}
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bool button_hold(void)
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{
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return (GPIOD_INPUT_VAL & 0x10) ? false : true;
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}
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bool headphones_inserted(void)
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{
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return (GPIOD_INPUT_VAL & 0x80) ? false : true;
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}
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