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

   1/* ------------------------------------------------------------------------ *
   2 * i2c-parport.h I2C bus over parallel port                                 *
   3 * ------------------------------------------------------------------------ *
   4   Copyright (C) 2003-2004 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#ifdef DATA
  22#undef DATA
  23#endif
  24
  25#define DATA    0
  26#define STAT    1
  27#define CTRL    2
  28
  29struct lineop {
  30        u8 val;
  31        u8 port;
  32        u8 inverted;
  33};
  34
  35struct adapter_parm {
  36        struct lineop setsda;
  37        struct lineop setscl;
  38        struct lineop getsda;
  39        struct lineop getscl;
  40        struct lineop init;
  41};
  42
  43static struct adapter_parm adapter_parm[] = {
  44        /* type 0: Philips adapter */
  45        {
  46                .setsda = { 0x80, DATA, 1 },
  47                .setscl = { 0x08, CTRL, 0 },
  48                .getsda = { 0x80, STAT, 0 },
  49                .getscl = { 0x08, STAT, 0 },
  50        },
  51        /* type 1: home brew teletext adapter */
  52        {
  53                .setsda = { 0x02, DATA, 0 },
  54                .setscl = { 0x01, DATA, 0 },
  55                .getsda = { 0x80, STAT, 1 },
  56        },
  57        /* type 2: Velleman K8000 adapter */
  58        {
  59                .setsda = { 0x02, CTRL, 1 },
  60                .setscl = { 0x08, CTRL, 1 },
  61                .getsda = { 0x10, STAT, 0 },
  62        },
  63        /* type 3: ELV adapter */
  64        {
  65                .setsda = { 0x02, DATA, 1 },
  66                .setscl = { 0x01, DATA, 1 },
  67                .getsda = { 0x40, STAT, 1 },
  68                .getscl = { 0x08, STAT, 1 },
  69        },
  70        /* type 4: ADM1032 evaluation board */
  71        {
  72                .setsda = { 0x02, DATA, 1 },
  73                .setscl = { 0x01, DATA, 1 },
  74                .getsda = { 0x10, STAT, 1 },
  75                .init   = { 0xf0, DATA, 0 },
  76        },
  77        /* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */
  78        {
  79                .setsda = { 0x02, DATA, 1 },
  80                .setscl = { 0x01, DATA, 1 },
  81                .getsda = { 0x10, STAT, 1 },
  82        },
  83};
  84
  85static int type;
  86module_param(type, int, 0);
  87MODULE_PARM_DESC(type,
  88        "Type of adapter:\n"
  89        " 0 = Philips adapter\n"
  90        " 1 = home brew teletext adapter\n"
  91        " 2 = Velleman K8000 adapter\n"
  92        " 3 = ELV adapter\n"
  93        " 4 = ADM1032 evaluation board\n"
  94        " 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n");
  95