blob: a908241d2564186211d6167f96a28bf342f2a58f (
plain)
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
|
/* Support for the latches on the old Archimedes which control the floppy,
* hard disc and printer
*
* (c) David Alan Gilbert 1995/1996
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/hardware.h>
#ifdef LATCHAADDR
/*
* They are static so that everyone who accesses them has to go through here
*/
static unsigned char LatchACopy;
/* newval=(oldval & ~mask)|newdata */
void oldlatch_aupdate(unsigned char mask,unsigned char newdata)
{
LatchACopy=(LatchACopy & ~mask)|newdata;
outb(LatchACopy, LATCHAADDR);
#ifdef DEBUG
printk("oldlatch_A:0x%2x\n",LatchACopy);
#endif
}
#endif
#ifdef LATCHBADDR
static unsigned char LatchBCopy;
/* newval=(oldval & ~mask)|newdata */
void oldlatch_bupdate(unsigned char mask,unsigned char newdata)
{
LatchBCopy=(LatchBCopy & ~mask)|newdata;
outb(LatchBCopy, LATCHBADDR);
#ifdef DEBUG
printk("oldlatch_B:0x%2x\n",LatchBCopy);
#endif
}
#endif
void __init oldlatch_init(void)
{
printk("oldlatch: init\n");
#ifdef LATCHAADDR
oldlatch_aupdate(0xff,0xff);
#endif
#ifdef LATCHBADDR
oldlatch_bupdate(0xff,0x8); /* Thats no FDC reset...*/
#endif
return ;
}
|
