LXR linux/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
  92static 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 */
 110