LXR linux/drivers/i2c/busses/i2c-parport.h

   1/* ------------------------------------------------------------------------ *
   2 * i2c-parport.h I2C bus over parallel port                                 *
   3 * ------------------------------------------------------------------------ *
   4   Copyright (C) 2003-2010 Jean Delvare <khali@linux-fr.org>
   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
  21struct lineop {
  22        u8 val;
  23        u8 port;
  24        u8 inverted;
  25};
  26
  27struct 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
  36static 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};
  93
  94static int type = -1;
  95module_param(type, int, 0);
  96MODULE_PARM_DESC(type,
  97        "Type of adapter:\n"
  98        " 0 = Philips adapter\n"
  99        " 1 = home brew teletext adapter\n"
 100        " 2 = Velleman K8000 adapter\n"
 101        " 3 = ELV adapter\n"
 102        " 4 = ADM1032 evaluation board\n"
 103        " 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n"
 104        " 6 = Barco LPT->DVI (K5800236) adapter\n"
 105        " 7 = One For All JP1 parallel port adapter\n"
 106);
 107