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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 Dave Chapman
*
* 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 "cpu.h"
#include "kernel.h"
#include "system.h"
#include "power.h"
#include "pcf50606.h"
#include "pcf50635.h"
#include "button-target.h"
#include "touchscreen-target.h"
#include "tuner.h"
#include "backlight-target.h"
#include "powermgmt.h"
#include "power-target.h"
static enum pmu_type pmu;
enum pmu_type get_pmu_type()
{
return pmu;
}
void power_init(void)
{
/* Configure GPA6 as input and wait a short while */
GPIOA_DIR &= ~(1<<6);
udelay(10);
/* Value of GPA6 determines PMU chip type */
if (GPIOA & (1<<6))
{
pmu = PCF50635;
pcf50635_init();
}
else
{
pmu = PCF50606;
/* Configure GPA6 for output (backlight enable) */
GPIOA_DIR |= (1<<6);
pcf50606_init();
/* Clear pending interrupts */
unsigned char data[3]; /* 0 = INT1, 1 = INT2, 2 = INT3 */
pcf50606_read_multiple(0x02, data, 3);
#ifndef BOOTLOADER
IEN |= EXT3_IRQ_MASK; /* Unmask EXT3 */
#endif
}
}
void power_off(void)
{
/* Turn the backlight off first to avoid a bright stripe on power-off */
_backlight_off();
sleep(HZ/10);
/* Power off the player using the same mechanism as the OF */
GPIOA_CLEAR = (1<<7);
while(true);
}
#ifndef BOOTLOADER
void EXT3(void)
{
unsigned char data[3]; /* 0 = INT1, 1 = INT2, 2 = INT3 */
/* Clear pending interrupts from pcf50606 */
pcf50606_read_multiple(0x02, data, 3);
if (data[0] & 0x04)
{
/* ONKEY1S */
if (!charger_inserted())
sys_poweroff();
else
pcf50606_reset_timeout();
}
if (data[2] & 0x08)
{
/* Touchscreen event, do something about it */
touchscreen_handle_device_irq();
}
}
#endif
#if CONFIG_CHARGING
unsigned int power_input_status(void)
{
/* Players with a PCF50606 can use GPIOs to determine whether AC is inserted
and whether charging is taking place. Newer players re-use C26 for the
touchscreen, so we need to monitor PCF50635 USB/adapter IRQs for this. */
if (get_pmu_type() == PCF50606)
{
/* Check AC adapter */
if (GPIOD & (1<<23))
return POWER_INPUT_MAIN_CHARGER;
/* C26 indicates charging, without AC connected it implies USB power */
if ((GPIOC & (1<<26)) == 0)
return POWER_INPUT_USB_CHARGER;
}
else
{
/* TODO: use adapter/usb connection state from PCF50635 driver */
}
return POWER_INPUT_NONE;
}
#endif
#if CONFIG_TUNER
/** Tuner **/
static bool powered = false;
bool tuner_power(bool status)
{
bool old_status;
lv24020lp_lock();
old_status = powered;
if (status != old_status)
{
if (status)
{
/* When power up, host should initialize the 3-wire bus
in host read mode: */
/* 1. Set direction of the DATA-line to input-mode. */
GPIOC_DIR &= ~(1 << 30);
/* 2. Drive NR_W low */
GPIOC_CLEAR = (1 << 31);
GPIOC_DIR |= (1 << 31);
/* 3. Drive CLOCK high */
GPIOC_SET = (1 << 29);
GPIOC_DIR |= (1 << 29);
lv24020lp_power(true);
}
else
{
lv24020lp_power(false);
/* set all as inputs */
GPIOC_DIR &= ~((1 << 29) | (1 << 30) | (1 << 31));
}
powered = status;
}
lv24020lp_unlock();
return old_status;
}
#endif /* CONFIG_TUNER */
|
