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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 494 | giacomo | 1 | #ifndef _I8042_IO_H |
| 2 | #define _I8042_IO_H |
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| 3 | |||
| 4 | /* |
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| 5 | * This program is free software; you can redistribute it and/or modify it |
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| 6 | * under the terms of the GNU General Public License version 2 as published by |
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| 7 | * the Free Software Foundation. |
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| 8 | */ |
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| 9 | |||
| 10 | /* |
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| 11 | * Names. |
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| 12 | */ |
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| 13 | |||
| 14 | #define I8042_KBD_PHYS_DESC "isa0060/serio0" |
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| 15 | #define I8042_AUX_PHYS_DESC "isa0060/serio1" |
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| 16 | #define I8042_MUX_PHYS_DESC "isa0060/serio%d" |
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| 17 | |||
| 18 | /* |
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| 19 | * IRQs. |
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| 20 | */ |
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| 21 | |||
| 22 | #ifdef __alpha__ |
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| 23 | # define I8042_KBD_IRQ 1 |
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| 24 | # define I8042_AUX_IRQ (RTC_PORT(0) == 0x170 ? 9 : 12) /* Jensen is special */ |
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| 25 | #elif defined(__ia64__) |
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| 26 | # define I8042_KBD_IRQ isa_irq_to_vector(1) |
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| 27 | # define I8042_AUX_IRQ isa_irq_to_vector(12) |
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| 28 | #else |
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| 29 | # define I8042_KBD_IRQ 1 |
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| 30 | # define I8042_AUX_IRQ 12 |
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| 31 | #endif |
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| 32 | |||
| 33 | /* |
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| 34 | * Register numbers. |
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| 35 | */ |
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| 36 | |||
| 37 | #define I8042_COMMAND_REG 0x64 |
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| 38 | #define I8042_STATUS_REG 0x64 |
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| 39 | #define I8042_DATA_REG 0x60 |
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| 40 | |||
| 41 | static inline int i8042_read_data(void) |
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| 42 | { |
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| 43 | return inb(I8042_DATA_REG); |
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| 44 | } |
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| 45 | |||
| 46 | static inline int i8042_read_status(void) |
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| 47 | { |
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| 48 | return inb(I8042_STATUS_REG); |
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| 49 | } |
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| 50 | |||
| 51 | static inline void i8042_write_data(int val) |
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| 52 | { |
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| 53 | outb(val, I8042_DATA_REG); |
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| 54 | return; |
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| 55 | } |
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| 56 | |||
| 57 | static inline void i8042_write_command(int val) |
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| 58 | { |
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| 59 | outb(val, I8042_COMMAND_REG); |
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| 60 | return; |
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| 61 | } |
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| 62 | |||
| 63 | static inline int i8042_platform_init(void) |
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| 64 | { |
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| 65 | /* |
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| 66 | * On ix86 platforms touching the i8042 data register region can do really |
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| 67 | * bad things. Because of this the region is always reserved on ix86 boxes. |
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| 68 | */ |
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| 69 | #if !defined(__i386__) && !defined(__sh__) && !defined(__alpha__) && !defined(__x86_64__) |
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| 70 | if (!request_region(I8042_DATA_REG, 16, "i8042")) |
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| 71 | return -1; |
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| 72 | #endif |
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| 73 | |||
| 74 | #if !defined(__i386__) && !defined(__x86_64__) |
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| 75 | i8042_reset = 1; |
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| 76 | #endif |
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| 77 | return 0; |
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| 78 | } |
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| 79 | |||
| 80 | static inline void i8042_platform_exit(void) |
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| 81 | { |
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| 82 | #if !defined(__i386__) && !defined(__sh__) && !defined(__alpha__) && !defined(__x86_64__) |
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| 83 | release_region(I8042_DATA_REG, 16); |
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| 84 | #endif |
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| 85 | } |
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| 86 | |||
| 87 | #endif /* _I8042_IO_H */ |