Prex Home / Browse Source - Prex Version: 0.9.0

root/bsp/drv/dev/input/i8042.h

INCLUDED FROM

   1 /*
   2  * Copyright (c) 2005, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 #ifndef _KMC_H
  31 #define _KMC_H
  32 /*
  33  * i8042 Keyboard Mouse Controller definition
  34  */
  36 /* I/O ports */
  37 #define KMC_DATA        0x60
  38 #define KMC_PORTB       0x61
  39 #define KMC_CMD         0x64
  40 #define KMC_STS         0x64
  42 /* Status */
  43 #define STS_PERR        0x80    /* Parity error */
  44 #define STS_TMO         0x40    /* Timeout */
  45 #define STS_AUXOBF      0x20    /* Mouse OBF */
  46 #define STS_INH         0x10    /* 0: inhibit  1: no-inhibit */
  47 #define STS_SYS         0x04    /* 0: power up  1:Init comp */
  48 #define STS_IBF         0x02    /* Input (to kbd) buffer full */
  49 #define STS_OBF         0x01    /* Output (from kbd) buffer full */
  51 /* Command */
  52 #define CMD_READ_CMD    0x20
  53 #define CMD_WRITE_CMD   0x60
  54 #define CMD_AUX_DIS     0xa7
  55 #define CMD_AUX_EN      0xa8
  56 #define CMD_KBD_DIS     0xad
  57 #define CMD_KBD_EN      0xae
  58 #define CMD_READ_OPORT  0xd0
  59 #define CMD_WRITE_OPORT 0xd1
  60 #define CMD_WRITE_AUX   0xd4
  62 /* Auxillary device command */
  63 #define AUX_ENABLE      0xf4
  64 #define AUX_DISABLE     0xf5
  65 #define AUX_RESET       0xff
  67 /*
  68  * wait_obf: Wait output buffer full
  69  * wait_obe: Wait input buffer empty
  70  * wait_ibf: Wait input buffer full
  71  * wait_ibe: Wait input buffer empty
  72  */
  73 #define kmc_wait_obf()  while ((bus_read_8(KMC_STS) & STS_OBF) == 0)
  74 #define kmc_wait_obe()  while (bus_read_8(KMC_STS) & STS_OBF)
  75 #define kmc_wait_ibf()  while ((bus_read_8(KMC_STS) & STS_IBF) == 0)
  76 #define kmc_wait_ibe()  while (bus_read_8(KMC_STS) & STS_IBF)
  78 #endif /* !_KMC_H */