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Linus Torvalds
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Jul 5, 2010
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: 62052be3a797f26f6f0fe30fc8d7f40ab54e08fd | ||
| refs/heads/master: 404504470177d5ca1b46db5197ee0b78d639a2eb |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| #include <linux/ioport.h> | ||
| #include <asm/io.h> | ||
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| #include "pc873xx.h" | ||
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| static unsigned pc873xx_probelist[] = {0x398, 0x26e, 0}; | ||
|
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| static char *pc873xx_names[] = { | ||
| "PC87303", "PC87306", "PC87312", "PC87332", "PC87334" | ||
| }; | ||
|
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| static unsigned int base, model; | ||
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| unsigned int __init pc873xx_get_base() | ||
| { | ||
| return base; | ||
| } | ||
|
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| char *__init pc873xx_get_model() | ||
| { | ||
| return pc873xx_names[model]; | ||
| } | ||
|
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| static unsigned char __init pc873xx_read(unsigned int base, int reg) | ||
| { | ||
| outb(reg, base); | ||
| return inb(base + 1); | ||
| } | ||
|
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| static void __init pc873xx_write(unsigned int base, int reg, unsigned char data) | ||
| { | ||
| unsigned long flags; | ||
|
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| local_irq_save(flags); | ||
| outb(reg, base); | ||
| outb(data, base + 1); | ||
| outb(data, base + 1); /* Must be written twice */ | ||
| local_irq_restore(flags); | ||
| } | ||
|
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| int __init pc873xx_probe(void) | ||
| { | ||
| int val, index = 0; | ||
|
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| while ((base = pc873xx_probelist[index++])) { | ||
|
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| if (request_region(base, 2, "Super IO PC873xx") == NULL) | ||
| continue; | ||
|
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| val = pc873xx_read(base, REG_SID); | ||
| if ((val & 0xf0) == 0x10) { | ||
| model = PC87332; | ||
| break; | ||
| } else if ((val & 0xf8) == 0x70) { | ||
| model = PC87306; | ||
| break; | ||
| } else if ((val & 0xf8) == 0x50) { | ||
| model = PC87334; | ||
| break; | ||
| } else if ((val & 0xf8) == 0x40) { | ||
| model = PC87303; | ||
| break; | ||
| } | ||
|
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| release_region(base, 2); | ||
| } | ||
|
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| return (base == 0) ? -1 : 1; | ||
| } | ||
|
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| void __init pc873xx_enable_epp19(void) | ||
| { | ||
| unsigned char data; | ||
|
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| printk(KERN_INFO "PC873xx enabling EPP v1.9\n"); | ||
| data = pc873xx_read(base, REG_PCR); | ||
| pc873xx_write(base, REG_PCR, (data & 0xFC) | 0x02); | ||
| } | ||
|
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| void __init pc873xx_enable_ide(void) | ||
| { | ||
| unsigned char data; | ||
|
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| printk(KERN_INFO "PC873xx enabling IDE interrupt\n"); | ||
| data = pc873xx_read(base, REG_FER); | ||
| pc873xx_write(base, REG_FER, data | 0x40); | ||
| } |
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