This source file includes following definitions.
- i8042_read_data
- i8042_read_status
- i8042_write_data
- i8042_write_command
- i8042_platform_init
- i8042_platform_exit
1
2 #ifndef _I8042_IO_H
3 #define _I8042_IO_H
4
5
6
7
8
9
10 #define I8042_KBD_PHYS_DESC "isa0060/serio0"
11 #define I8042_AUX_PHYS_DESC "isa0060/serio1"
12 #define I8042_MUX_PHYS_DESC "isa0060/serio%d"
13
14
15
16
17
18 #ifdef __alpha__
19 # define I8042_KBD_IRQ 1
20 # define I8042_AUX_IRQ (RTC_PORT(0) == 0x170 ? 9 : 12)
21 #elif defined(__arm__)
22
23 #include <asm/irq.h>
24 #elif defined(CONFIG_SH_CAYMAN)
25 #include <asm/irq.h>
26 #elif defined(CONFIG_PPC)
27 extern int of_i8042_kbd_irq;
28 extern int of_i8042_aux_irq;
29 # define I8042_KBD_IRQ of_i8042_kbd_irq
30 # define I8042_AUX_IRQ of_i8042_aux_irq
31 #else
32 # define I8042_KBD_IRQ 1
33 # define I8042_AUX_IRQ 12
34 #endif
35
36
37
38
39
40
41 #define I8042_COMMAND_REG 0x64
42 #define I8042_STATUS_REG 0x64
43 #define I8042_DATA_REG 0x60
44
45 static inline int i8042_read_data(void)
46 {
47 return inb(I8042_DATA_REG);
48 }
49
50 static inline int i8042_read_status(void)
51 {
52 return inb(I8042_STATUS_REG);
53 }
54
55 static inline void i8042_write_data(int val)
56 {
57 outb(val, I8042_DATA_REG);
58 }
59
60 static inline void i8042_write_command(int val)
61 {
62 outb(val, I8042_COMMAND_REG);
63 }
64
65 static inline int i8042_platform_init(void)
66 {
67
68
69
70
71 #if defined(CONFIG_PPC)
72 if (check_legacy_ioport(I8042_DATA_REG))
73 return -ENODEV;
74 #endif
75 #if !defined(__sh__) && !defined(__alpha__)
76 if (!request_region(I8042_DATA_REG, 16, "i8042"))
77 return -EBUSY;
78 #endif
79
80 i8042_reset = I8042_RESET_ALWAYS;
81 return 0;
82 }
83
84 static inline void i8042_platform_exit(void)
85 {
86 #if !defined(__sh__) && !defined(__alpha__)
87 release_region(I8042_DATA_REG, 16);
88 #endif
89 }
90
91 #endif