i2c-parport.h

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/* ------------------------------------------------------------------------ *
 * i2c-parport.h I2C bus over parallel port                                 *
 * ------------------------------------------------------------------------ *
   Copyright (C) 2003-2010 Jean Delvare <[email protected]>

   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.
 * ------------------------------------------------------------------------ */

#define PORT_DATA   0
#define PORT_STAT   1
#define PORT_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;
    unsigned int smbus_alert:1;
};

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