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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 by Mark Arigo
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "system.h"
#include "kernel.h"
#include "button.h"
#include "backlight.h"
#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
#include "powermgmt.h"
#include "adc.h"
static int int_btn = BUTTON_NONE;
static unsigned int rec_switch;
void button_init_device(void)
{
/* remote interrupt - low when key is pressed */
GPIOD_ENABLE |= 0x01;
GPIOD_OUTPUT_EN &= ~0x01;
/* disable/reset int */
GPIOD_INT_EN &= ~0x01;
GPIOD_INT_CLR |= 0x01;
/* enable int */
GPIOD_INT_LEV &= ~0x01;
GPIOD_INT_EN |= 0x01;
/* remote PLAY */
GPIOD_ENABLE |= 0x02;
GPIOD_OUTPUT_EN &= ~0x02;
/* current record switch state */
rec_switch = ~GPIOA_INPUT_VAL & 0x40;
}
/* Remote buttons */
void remote_int(void)
{
int state = 0x01 & ~GPIOD_INPUT_VAL;
GPIO_CLEAR_BITWISE(GPIOD_INT_EN, 0x01);
GPIO_WRITE_BITWISE(GPIOD_INT_LEV, state, 0x01);
if (state != 0)
{
/* necessary delay 1msec */
udelay(1000);
unsigned int val = adc_scan(ADC_REMOTE);
if (val > 750) int_btn = BUTTON_RC_MINUS;
else
if (val > 375) int_btn = BUTTON_RC_PLUS;
else
if (val > 100) int_btn = BUTTON_RC_REW;
else
int_btn = BUTTON_RC_FFWD;
}
else
int_btn = BUTTON_NONE;
GPIO_SET_BITWISE(GPIOD_INT_CLR, 0x01);
GPIO_SET_BITWISE(GPIOD_INT_EN, 0x01);
}
#else
void button_init_device(void)
{
/* nothing */
}
#endif /* (SAMSUNG_YH920) || (SAMSUNG_YH925) */
bool button_hold(void)
{
return (~GPIOA_INPUT_VAL & 0x1);
}
/*
* Get button pressed from hardware
*/
int button_read_device(void)
{
#if defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
int btn = int_btn;
#else
int btn = BUTTON_NONE;
#endif /* (SAMSUNG_YH920) || (SAMSUNG_YH925) */
static bool hold_button = false;
#ifndef BOOTLOADER
bool hold_button_old;
#endif
/* Hold */
#ifndef BOOTLOADER
hold_button_old = hold_button;
#endif
hold_button = button_hold();
#ifndef BOOTLOADER
if (hold_button != hold_button_old)
backlight_hold_changed(hold_button);
#endif
/* device buttons */
if (!hold_button)
{
if (~GPIOA_INPUT_VAL & 0x04) btn |= BUTTON_LEFT;
if (~GPIOA_INPUT_VAL & 0x20) btn |= BUTTON_RIGHT;
if (~GPIOA_INPUT_VAL & 0x10) btn |= BUTTON_UP;
if (~GPIOA_INPUT_VAL & 0x08) btn |= BUTTON_DOWN;
if (~GPIOA_INPUT_VAL & 0x02) btn |= BUTTON_FFWD;
if (~GPIOA_INPUT_VAL & 0x80) btn |= BUTTON_REW;
#if defined(SAMSUNG_YH820)
if (~GPIOA_INPUT_VAL & 0x40) btn |= BUTTON_REC;
#else
if ((~GPIOA_INPUT_VAL & 0x40) != rec_switch)
{
if (rec_switch) {
queue_post(&button_queue,BUTTON_REC_SW_OFF,0);
queue_post(&button_queue,BUTTON_REC_SW_OFF|BUTTON_REL,0);
}
else {
queue_post(&button_queue,BUTTON_REC_SW_ON,0);
queue_post(&button_queue,BUTTON_REC_SW_ON|BUTTON_REL,0);
}
rec_switch = ~GPIOA_INPUT_VAL & 0x40;
backlight_on();
reset_poweroff_timer();
}
#endif
#if defined(SAMSUNG_YH820)
if ( GPIOB_INPUT_VAL & 0x80) btn |= BUTTON_PLAY;
#elif defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925)
if ( GPIOD_INPUT_VAL & 0x04) btn |= BUTTON_PLAY;
if ( GPIOD_INPUT_VAL & 0x02) btn |= BUTTON_RC_PLAY; /* Remote PLAY */
#endif
}
return btn;
}
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