xref: /openbmc/linux/drivers/input/serio/i8042.h (revision 56a0eccd)
1 #ifndef _I8042_H
2 #define _I8042_H
3 
4 
5 /*
6  *  Copyright (c) 1999-2002 Vojtech Pavlik
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License version 2 as published by
10  * the Free Software Foundation.
11  */
12 
13 /*
14  * Arch-dependent inline functions and defines.
15  */
16 
17 #if defined(CONFIG_MACH_JAZZ)
18 #include "i8042-jazzio.h"
19 #elif defined(CONFIG_SGI_HAS_I8042)
20 #include "i8042-ip22io.h"
21 #elif defined(CONFIG_SNI_RM)
22 #include "i8042-snirm.h"
23 #elif defined(CONFIG_PPC)
24 #include "i8042-ppcio.h"
25 #elif defined(CONFIG_SPARC)
26 #include "i8042-sparcio.h"
27 #elif defined(CONFIG_X86) || defined(CONFIG_IA64)
28 #include "i8042-x86ia64io.h"
29 #elif defined(CONFIG_UNICORE32)
30 #include "i8042-unicore32io.h"
31 #else
32 #include "i8042-io.h"
33 #endif
34 
35 /*
36  * This is in 50us units, the time we wait for the i8042 to react. This
37  * has to be long enough for the i8042 itself to timeout on sending a byte
38  * to a non-existent mouse.
39  */
40 
41 #define I8042_CTL_TIMEOUT	10000
42 
43 /*
44  * Return codes.
45  */
46 
47 #define I8042_RET_CTL_TEST	0x55
48 
49 /*
50  * Expected maximum internal i8042 buffer size. This is used for flushing
51  * the i8042 buffers.
52  */
53 
54 #define I8042_BUFFER_SIZE	16
55 
56 /*
57  * Number of AUX ports on controllers supporting active multiplexing
58  * specification
59  */
60 
61 #define I8042_NUM_MUX_PORTS	4
62 
63 /*
64  * Debug.
65  */
66 
67 #ifdef DEBUG
68 static unsigned long i8042_start_time;
69 #define dbg_init() do { i8042_start_time = jiffies; } while (0)
70 #define dbg(format, arg...)							\
71 	do {									\
72 		if (i8042_debug)						\
73 			printk(KERN_DEBUG KBUILD_MODNAME ": [%d] " format,	\
74 			       (int) (jiffies - i8042_start_time), ##arg);	\
75 	} while (0)
76 
77 #define filter_dbg(filter, data, format, args...)		\
78 	do {							\
79 		if (!i8042_debug)				\
80 			break;					\
81 								\
82 		if (!filter || i8042_unmask_kbd_data)		\
83 			dbg("%02x " format, data, ##args);	\
84 		else						\
85 			dbg("** " format, ##args);		\
86 	} while (0)
87 #else
88 #define dbg_init() do { } while (0)
89 #define dbg(format, arg...)							\
90 	do {									\
91 		if (0)								\
92 			printk(KERN_DEBUG pr_fmt(format), ##arg);		\
93 	} while (0)
94 
95 #define filter_dbg(filter, data, format, args...) do { } while (0)
96 #endif
97 
98 #endif /* _I8042_H */
99