projects / mirror_ubuntu-artful-kernel.git / blame
| 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 | } |