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 #else
  30 #include "i8042-io.h"
  31 #endif
  32
  33 /*
  34  * This is in 50us units, the time we wait for the i8042 to react. This
  35  * has to be long enough for the i8042 itself to timeout on sending a byte
  36  * to a non-existent mouse.
  37  */
  38
  39 #define I8042_CTL_TIMEOUT       10000
  40
  41 /*
  42  * Status register bits.
  43  */
  44
  45 #define I8042_STR_PARITY        0x80
  46 #define I8042_STR_TIMEOUT       0x40
  47 #define I8042_STR_AUXDATA       0x20
  48 #define I8042_STR_KEYLOCK       0x10
  49 #define I8042_STR_CMDDAT        0x08
  50 #define I8042_STR_MUXERR        0x04
  51 #define I8042_STR_IBF           0x02
  52 #define I8042_STR_OBF           0x01
  53
  54 /*
  55  * Control register bits.
  56  */
  57
  58 #define I8042_CTR_KBDINT        0x01
  59 #define I8042_CTR_AUXINT        0x02
  60 #define I8042_CTR_IGNKEYLOCK    0x08
  61 #define I8042_CTR_KBDDIS        0x10
  62 #define I8042_CTR_AUXDIS        0x20
  63 #define I8042_CTR_XLATE         0x40
  64
  65 /*
  66  * Return codes.
  67  */
  68
  69 #define I8042_RET_CTL_TEST      0x55
  70
  71 /*
  72  * Expected maximum internal i8042 buffer size. This is used for flushing
  73  * the i8042 buffers.
  74  */
  75
  76 #define I8042_BUFFER_SIZE       16
  77
  78 /*
  79  * Number of AUX ports on controllers supporting active multiplexing
  80  * specification
  81  */
  82
  83 #define I8042_NUM_MUX_PORTS     4
  84
  85 /*
  86  * Debug.
  87  */
  88
  89 #ifdef DEBUG
  90 static unsigned long i8042_start_time;
  91 #define dbg_init() do { i8042_start_time = jiffies; } while (0)
  92 #define dbg(format, arg...)                                                     \
  93         do {                                                                    \
  94                 if (i8042_debug)                                                \
  95                         printk(KERN_DEBUG __FILE__ ": " format " [%d]\n" ,      \
  96                                 ## arg, (int) (jiffies - i8042_start_time));    \
  97         } while (0)
  98 #else
  99 #define dbg_init() do { } while (0)
 100 #define dbg(format, arg...) do {} while (0)
 101 #endif
 102
 103 #endif /* _I8042_H */