Commit | Line | Data |
---|---|---|
932e0c20 ML |
1 | #include <linux/ioport.h> |
2 | #include <asm/io.h> | |
3 | ||
4 | #include "pc873xx.h" | |
5 | ||
6 | static unsigned pc873xx_probelist[] = {0x398, 0x26e, 0}; | |
7 | ||
8 | static char *pc873xx_names[] = { | |
9 | "PC87303", "PC87306", "PC87312", "PC87332", "PC87334" | |
10 | }; | |
11 | ||
12 | static unsigned int base, model; | |
13 | ||
14 | ||
15 | unsigned int __init pc873xx_get_base() | |
16 | { | |
17 | return base; | |
18 | } | |
19 | ||
20 | char *__init pc873xx_get_model() | |
21 | { | |
22 | return pc873xx_names[model]; | |
23 | } | |
24 | ||
25 | static unsigned char __init pc873xx_read(unsigned int base, int reg) | |
26 | { | |
27 | outb(reg, base); | |
28 | return inb(base + 1); | |
29 | } | |
30 | ||
31 | static void __init pc873xx_write(unsigned int base, int reg, unsigned char data) | |
32 | { | |
33 | unsigned long flags; | |
34 | ||
35 | local_irq_save(flags); | |
36 | outb(reg, base); | |
37 | outb(data, base + 1); | |
38 | outb(data, base + 1); /* Must be written twice */ | |
39 | local_irq_restore(flags); | |
40 | } | |
41 | ||
42 | int __init pc873xx_probe(void) | |
43 | { | |
44 | int val, index = 0; | |
45 | ||
46 | while ((base = pc873xx_probelist[index++])) { | |
47 | ||
48 | if (request_region(base, 2, "Super IO PC873xx") == NULL) | |
49 | continue; | |
50 | ||
51 | val = pc873xx_read(base, REG_SID); | |
52 | if ((val & 0xf0) == 0x10) { | |
53 | model = PC87332; | |
54 | break; | |
55 | } else if ((val & 0xf8) == 0x70) { | |
56 | model = PC87306; | |
57 | break; | |
58 | } else if ((val & 0xf8) == 0x50) { | |
59 | model = PC87334; | |
60 | break; | |
61 | } else if ((val & 0xf8) == 0x40) { | |
62 | model = PC87303; | |
63 | break; | |
64 | } | |
65 | ||
66 | release_region(base, 2); | |
67 | } | |
68 | ||
69 | return (base == 0) ? -1 : 1; | |
70 | } | |
71 | ||
72 | void __init pc873xx_enable_epp19(void) | |
73 | { | |
74 | unsigned char data; | |
75 | ||
76 | printk(KERN_INFO "PC873xx enabling EPP v1.9\n"); | |
77 | data = pc873xx_read(base, REG_PCR); | |
78 | pc873xx_write(base, REG_PCR, (data & 0xFC) | 0x02); | |
79 | } | |
80 | ||
81 | void __init pc873xx_enable_ide(void) | |
82 | { | |
83 | unsigned char data; | |
84 | ||
85 | printk(KERN_INFO "PC873xx enabling IDE interrupt\n"); | |
86 | data = pc873xx_read(base, REG_FER); | |
87 | pc873xx_write(base, REG_FER, data | 0x40); | |
88 | } |