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1da177e4 LT |
1 | #ifndef _I8042_H |
2 | #define _I8042_H | |
3 | ||
4 | #include <linux/config.h> | |
5 | ||
6 | /* | |
7 | * Copyright (c) 1999-2002 Vojtech Pavlik | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License version 2 as published by | |
11 | * the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | /* | |
15 | * Arch-dependent inline functions and defines. | |
16 | */ | |
17 | ||
18 | #if defined(CONFIG_MACH_JAZZ) | |
19 | #include "i8042-jazzio.h" | |
20 | #elif defined(CONFIG_SGI_IP22) | |
21 | #include "i8042-ip22io.h" | |
22 | #elif defined(CONFIG_PPC) | |
23 | #include "i8042-ppcio.h" | |
24 | #elif defined(CONFIG_SPARC32) || defined(CONFIG_SPARC64) | |
25 | #include "i8042-sparcio.h" | |
26 | #elif defined(CONFIG_X86) || defined(CONFIG_IA64) | |
27 | #include "i8042-x86ia64io.h" | |
28 | #else | |
29 | #include "i8042-io.h" | |
30 | #endif | |
31 | ||
32 | /* | |
33 | * This is in 50us units, the time we wait for the i8042 to react. This | |
34 | * has to be long enough for the i8042 itself to timeout on sending a byte | |
35 | * to a non-existent mouse. | |
36 | */ | |
37 | ||
38 | #define I8042_CTL_TIMEOUT 10000 | |
39 | ||
40 | /* | |
41 | * When the device isn't opened and it's interrupts aren't used, we poll it at | |
42 | * regular intervals to see if any characters arrived. If yes, we can start | |
43 | * probing for any mouse / keyboard connected. This is the period of the | |
44 | * polling. | |
45 | */ | |
46 | ||
47 | #define I8042_POLL_PERIOD HZ/20 | |
48 | ||
49 | /* | |
50 | * Status register bits. | |
51 | */ | |
52 | ||
53 | #define I8042_STR_PARITY 0x80 | |
54 | #define I8042_STR_TIMEOUT 0x40 | |
55 | #define I8042_STR_AUXDATA 0x20 | |
56 | #define I8042_STR_KEYLOCK 0x10 | |
57 | #define I8042_STR_CMDDAT 0x08 | |
58 | #define I8042_STR_MUXERR 0x04 | |
59 | #define I8042_STR_IBF 0x02 | |
60 | #define I8042_STR_OBF 0x01 | |
61 | ||
62 | /* | |
63 | * Control register bits. | |
64 | */ | |
65 | ||
66 | #define I8042_CTR_KBDINT 0x01 | |
67 | #define I8042_CTR_AUXINT 0x02 | |
68 | #define I8042_CTR_IGNKEYLOCK 0x08 | |
69 | #define I8042_CTR_KBDDIS 0x10 | |
70 | #define I8042_CTR_AUXDIS 0x20 | |
71 | #define I8042_CTR_XLATE 0x40 | |
72 | ||
73 | /* | |
74 | * Commands. | |
75 | */ | |
76 | ||
77 | #define I8042_CMD_CTL_RCTR 0x0120 | |
78 | #define I8042_CMD_CTL_WCTR 0x1060 | |
79 | #define I8042_CMD_CTL_TEST 0x01aa | |
80 | ||
81 | #define I8042_CMD_KBD_DISABLE 0x00ad | |
82 | #define I8042_CMD_KBD_ENABLE 0x00ae | |
83 | #define I8042_CMD_KBD_TEST 0x01ab | |
84 | #define I8042_CMD_KBD_LOOP 0x11d2 | |
85 | ||
86 | #define I8042_CMD_AUX_DISABLE 0x00a7 | |
87 | #define I8042_CMD_AUX_ENABLE 0x00a8 | |
88 | #define I8042_CMD_AUX_TEST 0x01a9 | |
89 | #define I8042_CMD_AUX_SEND 0x10d4 | |
90 | #define I8042_CMD_AUX_LOOP 0x11d3 | |
91 | ||
92 | #define I8042_CMD_MUX_PFX 0x0090 | |
93 | #define I8042_CMD_MUX_SEND 0x1090 | |
94 | ||
95 | /* | |
96 | * Return codes. | |
97 | */ | |
98 | ||
99 | #define I8042_RET_CTL_TEST 0x55 | |
100 | ||
101 | /* | |
102 | * Expected maximum internal i8042 buffer size. This is used for flushing | |
103 | * the i8042 buffers. | |
104 | */ | |
105 | ||
106 | #define I8042_BUFFER_SIZE 16 | |
107 | ||
108 | /* | |
109 | * Number of AUX ports on controllers supporting active multiplexing | |
110 | * specification | |
111 | */ | |
112 | ||
113 | #define I8042_NUM_MUX_PORTS 4 | |
114 | ||
115 | /* | |
116 | * Debug. | |
117 | */ | |
118 | ||
119 | #ifdef DEBUG | |
120 | static unsigned long i8042_start_time; | |
121 | #define dbg_init() do { i8042_start_time = jiffies; } while (0) | |
122 | #define dbg(format, arg...) \ | |
123 | do { \ | |
124 | if (i8042_debug) \ | |
125 | printk(KERN_DEBUG __FILE__ ": " format " [%d]\n" , \ | |
126 | ## arg, (int) (jiffies - i8042_start_time)); \ | |
127 | } while (0) | |
128 | #else | |
129 | #define dbg_init() do { } while (0) | |
130 | #define dbg(format, arg...) do {} while (0) | |
131 | #endif | |
132 | ||
133 | #endif /* _I8042_H */ |