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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/input/serio/i8042.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/input/serio/i8042.h')
-rw-r--r--drivers/input/serio/i8042.h133
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/input/serio/i8042.h b/drivers/input/serio/i8042.h
new file mode 100644
index 000000000000..13835039a2a7
--- /dev/null
+++ b/drivers/input/serio/i8042.h
@@ -0,0 +1,133 @@
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
120static 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 */