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
|
/*
* Initialization code for OPTI MAD16 interface chip by
* Davor Jadrijevic <davor@emard.pub.hr>
* (Included by ad1848.c when MAD16 support is enabled)
*
* It looks like MAD16 is similar than the Mozart chip (OAK OTI-601).
* It could be even possible that these chips are exactly the same. Can
* anybody confirm this?
*/
static void wr_a_mad16(int base, int v, int a)
{
OUTB(a, base + 0xf);
OUTB(v, base + 0x11);
}
static void wr_b_mad16(int base, int v, int a)
{
OUTB(a, base + 0xf);
OUTB(v, base + 0xd);
}
/*
static int rd_a_mad16(int base, int a)
{
OUTB(a, base + 0xf);
return INB(base + 0x11);
}
*/
static int rd_b_mad16(int base, int a)
{
OUTB(a, base + 0xf);
return INB(base + 0xd);
}
/*
static int rd_0_mad16(int base, int a)
{
OUTB(a, base + 0xf);
return INB(base + 0xf);
}
static void wr_ad(int base, int v, int a)
{
OUTB(a, base + 4);
OUTB(v, base + 5);
}
static int rd_ad(int base, int a)
{
OUTB(a, base + 4);
return INB(base + 5);
}
*/
static int mad16init(int adr)
{
int j;
long i;
static int ad1848_bases[] =
{ 0x220, -1, -1, 0x240, -1, -1, -1, -1, 0x530, 0xE80, 0xF40, 0x604, 0 };
int mad16_base = 0xf80, ad1848_base;
for(j = 0; (j < 16) && (ad1848_bases[j] != 0); j++)
if(adr == ad1848_bases[j])
break;
if( (ad1848_base = ad1848_bases[j]) < 0x530)
{
printk("Unknown MAD16 setting 0x%3X\n", adr);
return -1;
}
/* printk("OPTi MAD16 WSS at 0x%3X\n", ad1848_base); */
rd_b_mad16(mad16_base, 0xe2);
wr_a_mad16(mad16_base, 0x1a, 0xe2);
wr_b_mad16(mad16_base, j * 16 + 1, 0xe2);
wr_a_mad16(mad16_base, 0x1a, 0xe2);
for( i = 0; i < 10000; i++)
if( (INB(ad1848_base+4) & 0x80) == 0 )
break;
return 0;
};
|
