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i2c-parport.h

/* ------------------------------------------------------------------------ *
 * i2c-parport.h I2C bus over parallel port                                 *
 * ------------------------------------------------------------------------ *
   Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org>
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 * ------------------------------------------------------------------------ */

#ifdef DATA
#undef DATA
#endif

#define DATA      0
#define STAT      1
#define CTRL      2

struct lineop {
      u8 val;
      u8 port;
      u8 inverted;
};

struct adapter_parm {
      struct lineop setsda;
      struct lineop setscl;
      struct lineop getsda;
      struct lineop getscl;
      struct lineop init;
};

static struct adapter_parm adapter_parm[] = {
      /* type 0: Philips adapter */
      {
            .setsda     = { 0x80, DATA, 1 },
            .setscl     = { 0x08, CTRL, 0 },
            .getsda     = { 0x80, STAT, 0 },
            .getscl     = { 0x08, STAT, 0 },
      },
      /* type 1: home brew teletext adapter */
      {
            .setsda     = { 0x02, DATA, 0 },
            .setscl     = { 0x01, DATA, 0 },
            .getsda     = { 0x80, STAT, 1 },
      },
      /* type 2: Velleman K8000 adapter */
      {
            .setsda     = { 0x02, CTRL, 1 },
            .setscl     = { 0x08, CTRL, 1 },
            .getsda     = { 0x10, STAT, 0 },
      },
      /* type 3: ELV adapter */
      {
            .setsda     = { 0x02, DATA, 1 },
            .setscl     = { 0x01, DATA, 1 },
            .getsda     = { 0x40, STAT, 1 },
            .getscl     = { 0x08, STAT, 1 },
      },
      /* type 4: ADM1032 evaluation board */
      {
            .setsda     = { 0x02, DATA, 1 },
            .setscl     = { 0x01, DATA, 1 },
            .getsda     = { 0x10, STAT, 1 },
            .init = { 0xf0, DATA, 0 },
      },
      /* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */
      {
            .setsda     = { 0x02, DATA, 1 },
            .setscl     = { 0x01, DATA, 1 },
            .getsda     = { 0x10, STAT, 1 },
      },
      /* type 6: Barco LPT->DVI (K5800236) adapter */
      {
            .setsda     = { 0x02, DATA, 1 },
            .setscl     = { 0x01, DATA, 1 },
            .getsda     = { 0x20, STAT, 0 },
            .getscl     = { 0x40, STAT, 0 },
            .init = { 0xfc, DATA, 0 },
      },
      /* type 7: One For All JP1 parallel port adapter */
      {
            .setsda     = { 0x01, DATA, 0 },
            .setscl     = { 0x02, DATA, 0 },
            .getsda     = { 0x80, STAT, 1 },
            .init = { 0x04, DATA, 1 },
      },
};

static int type = -1;
module_param(type, int, 0);
MODULE_PARM_DESC(type,
      "Type of adapter:\n"
      " 0 = Philips adapter\n"
      " 1 = home brew teletext adapter\n"
      " 2 = Velleman K8000 adapter\n"
      " 3 = ELV adapter\n"
      " 4 = ADM1032 evaluation board\n"
      " 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n"
      " 6 = Barco LPT->DVI (K5800236) adapter\n"
      " 7 = One For All JP1 parallel port adapter\n"
);

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