1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/***************************************************************************
* __________ __ ___.
* 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) {
button_queue_post(BUTTON_REC_SW_OFF,0);
button_queue_post(BUTTON_REC_SW_OFF|BUTTON_REL,0);
}
else {
button_queue_post(BUTTON_REC_SW_ON,0);
button_queue_post(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;
}
|
