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
|
/*
* hp6x0 Power Management Routines
*
* Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License.
*/
#include <linux/init.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/apm-emulation.h>
#include <asm/io.h>
#include <asm/hd64461.h>
#include <asm/hp6xx.h>
#include <asm/cpu/dac.h>
#include <asm/pm.h>
#define STBCR 0xffffff82 /* STBCR (Standby control register) SH7709A */
#define STBCR2 0xffffff88 /* STBCR2 (Standby control register 2) SH7709A */
/* 1 = true, 0 = false
bit 0 - Clock supply to SCI1 (IRDA) halted
bit 1 - Clock supply to SCI2 (SCIF) halted
bit 2 - Clock supply to ADC halted and all registers initialized
bit 3 - Clock supply to DAC halted
bit 4 - Clock supply to DMAC halted
bit 5 - Clock supply to UBC is halted
bit 6 - Pins MD5 to MD0 are changed in standby mode
bit 7 - Reserved
*/
static int hp6x0_pm_enter(suspend_state_t state)
{
u8 stbcr, stbcr2;
#ifdef CONFIG_HD64461_ENABLER
u8 scr;
u16 hd64461_stbcr;
#endif
#ifdef CONFIG_HD64461_ENABLER
/* disable all CF interrupts */
outb(0, HD64461_PCC1CSCIER);
scr = inb(HD64461_PCC1SCR);
scr |= HD64461_PCCSCR_VCC1;
outb(scr, HD64461_PCC1SCR);
/* get standby status of all devices */
hd64461_stbcr = inw(HD64461_STBCR);
/* add standby mode to CF slot */
hd64461_stbcr |= HD64461_STBCR_SPC1ST;
outw(hd64461_stbcr, HD64461_STBCR);
#endif
/* chan 0/1 D/A conversion and DA 0/1 output are enabled */
outb(0x1f, DACR);
/* halt clocksupply to SCI */
stbcr = inb(STBCR);
outb(0x01, STBCR);
/* state and drop all clocksupply */
stbcr2 = inb(STBCR2);
outb(0x7f , STBCR2);
/* allow IO Ports D + C, disallow A + B */
outw(0xf07f, HD64461_SCPUCR);
/* Zzzzz */
pm_enter();
/* wakeup, Lets restore the old values */
outw(0, HD64461_SCPUCR);
outb(stbcr, STBCR);
outb(stbcr2, STBCR2);
#ifdef CONFIG_HD64461_ENABLER
/* get standby status of all devices */
hd64461_stbcr = inw(HD64461_STBCR);
/* remove standby mode for CF slot */
hd64461_stbcr &= ~HD64461_STBCR_SPC1ST;
outw(hd64461_stbcr, HD64461_STBCR);
/* turn on CF interrupt again */
outb(0x4c, HD64461_PCC1CSCIER);
outb(0x00, HD64461_PCC1CSCR);
#endif
return 0;
}
static struct platform_suspend_ops hp6x0_pm_ops = {
.enter = hp6x0_pm_enter,
.valid = suspend_valid_only_mem,
};
static int __init hp6x0_pm_init(void)
{
suspend_set_ops(&hp6x0_pm_ops);
return 0;
}
late_initcall(hp6x0_pm_init);
|
