drivers/i2c/busses/i2c-parport.h

   1 /* ------------------------------------------------------------------------ *
   2  * i2c-parport.h I2C bus over parallel port                                 *
   3  * ------------------------------------------------------------------------ *
   4    Copyright (C) 2003-2010 Jean Delvare <jdelvare@suse.de>
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15  * ------------------------------------------------------------------------ */
  16
  17 #define PORT_DATA       0
  18 #define PORT_STAT       1
  19 #define PORT_CTRL       2
  20
  21 struct lineop {
  22         u8 val;
  23         u8 port;
  24         u8 inverted;
  25 };
  26
  27 struct adapter_parm {
  28         struct lineop setsda;
  29         struct lineop setscl;
  30         struct lineop getsda;
  31         struct lineop getscl;
  32         struct lineop init;
  33         unsigned int smbus_alert:1;
  34 };
  35
  36 static const struct adapter_parm adapter_parm[] = {
  37         /* type 0: Philips adapter */
  38         {
  39                 .setsda = { 0x80, PORT_DATA, 1 },
  40                 .setscl = { 0x08, PORT_CTRL, 0 },
  41                 .getsda = { 0x80, PORT_STAT, 0 },
  42                 .getscl = { 0x08, PORT_STAT, 0 },
  43         },
  44         /* type 1: home brew teletext adapter */
  45         {
  46                 .setsda = { 0x02, PORT_DATA, 0 },
  47                 .setscl = { 0x01, PORT_DATA, 0 },
  48                 .getsda = { 0x80, PORT_STAT, 1 },
  49         },
  50         /* type 2: Velleman K8000 adapter */
  51         {
  52                 .setsda = { 0x02, PORT_CTRL, 1 },
  53                 .setscl = { 0x08, PORT_CTRL, 1 },
  54                 .getsda = { 0x10, PORT_STAT, 0 },
  55         },
  56         /* type 3: ELV adapter */
  57         {
  58                 .setsda = { 0x02, PORT_DATA, 1 },
  59                 .setscl = { 0x01, PORT_DATA, 1 },
  60                 .getsda = { 0x40, PORT_STAT, 1 },
  61                 .getscl = { 0x08, PORT_STAT, 1 },
  62         },
  63         /* type 4: ADM1032 evaluation board */
  64         {
  65                 .setsda = { 0x02, PORT_DATA, 1 },
  66                 .setscl = { 0x01, PORT_DATA, 1 },
  67                 .getsda = { 0x10, PORT_STAT, 1 },
  68                 .init   = { 0xf0, PORT_DATA, 0 },
  69                 .smbus_alert = 1,
  70         },
  71         /* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */
  72         {
  73                 .setsda = { 0x02, PORT_DATA, 1 },
  74                 .setscl = { 0x01, PORT_DATA, 1 },
  75                 .getsda = { 0x10, PORT_STAT, 1 },
  76         },
  77         /* type 6: Barco LPT->DVI (K5800236) adapter */
  78         {
  79                 .setsda = { 0x02, PORT_DATA, 1 },
  80                 .setscl = { 0x01, PORT_DATA, 1 },
  81                 .getsda = { 0x20, PORT_STAT, 0 },
  82                 .getscl = { 0x40, PORT_STAT, 0 },
  83                 .init   = { 0xfc, PORT_DATA, 0 },
  84         },
  85         /* type 7: One For All JP1 parallel port adapter */
  86         {
  87                 .setsda = { 0x01, PORT_DATA, 0 },
  88                 .setscl = { 0x02, PORT_DATA, 0 },
  89                 .getsda = { 0x80, PORT_STAT, 1 },
  90                 .init   = { 0x04, PORT_DATA, 1 },
  91         },
  92         /* type 8: VCT-jig */
  93         {
  94                 .setsda = { 0x04, PORT_DATA, 1 },
  95                 .setscl = { 0x01, PORT_DATA, 1 },
  96                 .getsda = { 0x40, PORT_STAT, 0 },
  97                 .getscl = { 0x80, PORT_STAT, 1 },
  98         },
  99 };
 100
 101 static int type = -1;
 102 module_param(type, int, 0);
 103 MODULE_PARM_DESC(type,
 104         "Type of adapter:\n"
 105         " 0 = Philips adapter\n"
 106         " 1 = home brew teletext adapter\n"
 107         " 2 = Velleman K8000 adapter\n"
 108         " 3 = ELV adapter\n"
 109         " 4 = ADM1032 evaluation board\n"
 110         " 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n"
 111         " 6 = Barco LPT->DVI (K5800236) adapter\n"
 112         " 7 = One For All JP1 parallel port adapter\n"
 113         " 8 = VCT-jig\n"
 114 );