drivers/input/serio/i8042.h

   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  * Status register bits.
  45  */
  46
  47 #define I8042_STR_PARITY        0x80
  48 #define I8042_STR_TIMEOUT       0x40
  49 #define I8042_STR_AUXDATA       0x20
  50 #define I8042_STR_KEYLOCK       0x10
  51 #define I8042_STR_CMDDAT        0x08
  52 #define I8042_STR_MUXERR        0x04
  53 #define I8042_STR_IBF           0x02
  54 #define I8042_STR_OBF           0x01
  55
  56 /*
  57  * Control register bits.
  58  */
  59
  60 #define I8042_CTR_KBDINT        0x01
  61 #define I8042_CTR_AUXINT        0x02
  62 #define I8042_CTR_IGNKEYLOCK    0x08
  63 #define I8042_CTR_KBDDIS        0x10
  64 #define I8042_CTR_AUXDIS        0x20
  65 #define I8042_CTR_XLATE         0x40
  66
  67 /*
  68  * Return codes.
  69  */
  70
  71 #define I8042_RET_CTL_TEST      0x55
  72
  73 /*
  74  * Expected maximum internal i8042 buffer size. This is used for flushing
  75  * the i8042 buffers.
  76  */
  77
  78 #define I8042_BUFFER_SIZE       16
  79
  80 /*
  81  * Number of AUX ports on controllers supporting active multiplexing
  82  * specification
  83  */
  84
  85 #define I8042_NUM_MUX_PORTS     4
  86
  87 /*
  88  * Debug.
  89  */
  90
  91 #ifdef DEBUG
  92 static unsigned long i8042_start_time;
  93 #define dbg_init() do { i8042_start_time = jiffies; } while (0)
  94 #define dbg(format, arg...)                                                     \
  95         do {                                                                    \
  96                 if (i8042_debug)                                                \
  97                         printk(KERN_DEBUG KBUILD_MODNAME ": [%d] " format,      \
  98                                (int) (jiffies - i8042_start_time), ##arg);      \
  99         } while (0)
 100 #else
 101 #define dbg_init() do { } while (0)
 102 #define dbg(format, arg...)                                                     \
 103         do {                                                                    \
 104                 if (0)                                                          \
 105                         printk(KERN_DEBUG pr_fmt(format), ##arg);               \
 106         } while (0)
 107 #endif
 108
 109 #endif /* _I8042_H */