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   You should have received a copy of the GNU General Public License
  17   along with this program; if not, write to the Free Software
  18   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 * ------------------------------------------------------------------------ */
  20
  21#define PORT_DATA       0
  22#define PORT_STAT       1
  23#define PORT_CTRL       2
  24
  25struct lineop {
  26        u8 val;
  27        u8 port;
  28        u8 inverted;
  29};
  30
  31struct adapter_parm {
  32        struct lineop setsda;
  33        struct lineop setscl;
  34        struct lineop getsda;
  35        struct lineop getscl;
  36        struct lineop init;
  37        unsigned int smbus_alert:1;
  38};
  39
  40static const struct adapter_parm adapter_parm[] = {
  41        /* type 0: Philips adapter */
  42        {
  43                .setsda = { 0x80, PORT_DATA, 1 },
  44                .setscl = { 0x08, PORT_CTRL, 0 },
  45                .getsda = { 0x80, PORT_STAT, 0 },
  46                .getscl = { 0x08, PORT_STAT, 0 },
  47        },
  48        /* type 1: home brew teletext adapter */
  49        {
  50                .setsda = { 0x02, PORT_DATA, 0 },
  51                .setscl = { 0x01, PORT_DATA, 0 },
  52                .getsda = { 0x80, PORT_STAT, 1 },
  53        },
  54        /* type 2: Velleman K8000 adapter */
  55        {
  56                .setsda = { 0x02, PORT_CTRL, 1 },
  57                .setscl = { 0x08, PORT_CTRL, 1 },
  58                .getsda = { 0x10, PORT_STAT, 0 },
  59        },
  60        /* type 3: ELV adapter */
  61        {
  62                .setsda = { 0x02, PORT_DATA, 1 },
  63                .setscl = { 0x01, PORT_DATA, 1 },
  64                .getsda = { 0x40, PORT_STAT, 1 },
  65                .getscl = { 0x08, PORT_STAT, 1 },
  66        },
  67        /* type 4: ADM1032 evaluation board */
  68        {
  69                .setsda = { 0x02, PORT_DATA, 1 },
  70                .setscl = { 0x01, PORT_DATA, 1 },
  71                .getsda = { 0x10, PORT_STAT, 1 },
  72                .init   = { 0xf0, PORT_DATA, 0 },
  73                .smbus_alert = 1,
  74        },
  75        /* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */
  76        {
  77                .setsda = { 0x02, PORT_DATA, 1 },
  78                .setscl = { 0x01, PORT_DATA, 1 },
  79                .getsda = { 0x10, PORT_STAT, 1 },
  80        },
  81        /* type 6: Barco LPT->DVI (K5800236) adapter */
  82        {
  83                .setsda = { 0x02, PORT_DATA, 1 },
  84                .setscl = { 0x01, PORT_DATA, 1 },
  85                .getsda = { 0x20, PORT_STAT, 0 },
  86                .getscl = { 0x40, PORT_STAT, 0 },
  87                .init   = { 0xfc, PORT_DATA, 0 },
  88        },
  89        /* type 7: One For All JP1 parallel port adapter */
  90        {
  91                .setsda = { 0x01, PORT_DATA, 0 },
  92                .setscl = { 0x02, PORT_DATA, 0 },
  93                .getsda = { 0x80, PORT_STAT, 1 },
  94                .init   = { 0x04, PORT_DATA, 1 },
  95        },
  96};
  97
  98static int type = -1;
  99module_param(type, int, 0);
 100MODULE_PARM_DESC(type,
 101        "Type of adapter:\n"
 102        " 0 = Philips adapter\n"
 103        " 1 = home brew teletext adapter\n"
 104        " 2 = Velleman K8000 adapter\n"
 105        " 3 = ELV adapter\n"
 106        " 4 = ADM1032 evaluation board\n"
 107        " 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n"
 108        " 6 = Barco LPT->DVI (K5800236) adapter\n"
 109        " 7 = One For All JP1 parallel port adapter\n"
 110);
 111