drivers/i2c/busses/i2c-parport.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* ------------------------------------------------------------------------ *
   3  * i2c-parport.h I2C bus over parallel port                                 *
   4  * ------------------------------------------------------------------------ *
   5    Copyright (C) 2003-2010 Jean Delvare <jdelvare@suse.de>
   6
   7  * ------------------------------------------------------------------------ */
   8
   9 #define PORT_DATA       0
  10 #define PORT_STAT       1
  11 #define PORT_CTRL       2
  12
  13 struct lineop {
  14         u8 val;
  15         u8 port;
  16         u8 inverted;
  17 };
  18
  19 struct adapter_parm {
  20         struct lineop setsda;
  21         struct lineop setscl;
  22         struct lineop getsda;
  23         struct lineop getscl;
  24         struct lineop init;
  25         unsigned int smbus_alert:1;
  26 };
  27
  28 static const struct adapter_parm adapter_parm[] = {
  29         /* type 0: Philips adapter */
  30         {
  31                 .setsda = { 0x80, PORT_DATA, 1 },
  32                 .setscl = { 0x08, PORT_CTRL, 0 },
  33                 .getsda = { 0x80, PORT_STAT, 0 },
  34                 .getscl = { 0x08, PORT_STAT, 0 },
  35         },
  36         /* type 1: home brew teletext adapter */
  37         {
  38                 .setsda = { 0x02, PORT_DATA, 0 },
  39                 .setscl = { 0x01, PORT_DATA, 0 },
  40                 .getsda = { 0x80, PORT_STAT, 1 },
  41         },
  42         /* type 2: Velleman K8000 adapter */
  43         {
  44                 .setsda = { 0x02, PORT_CTRL, 1 },
  45                 .setscl = { 0x08, PORT_CTRL, 1 },
  46                 .getsda = { 0x10, PORT_STAT, 0 },
  47         },
  48         /* type 3: ELV adapter */
  49         {
  50                 .setsda = { 0x02, PORT_DATA, 1 },
  51                 .setscl = { 0x01, PORT_DATA, 1 },
  52                 .getsda = { 0x40, PORT_STAT, 1 },
  53                 .getscl = { 0x08, PORT_STAT, 1 },
  54         },
  55         /* type 4: ADM1032 evaluation board */
  56         {
  57                 .setsda = { 0x02, PORT_DATA, 1 },
  58                 .setscl = { 0x01, PORT_DATA, 1 },
  59                 .getsda = { 0x10, PORT_STAT, 1 },
  60                 .init   = { 0xf0, PORT_DATA, 0 },
  61                 .smbus_alert = 1,
  62         },
  63         /* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */
  64         {
  65                 .setsda = { 0x02, PORT_DATA, 1 },
  66                 .setscl = { 0x01, PORT_DATA, 1 },
  67                 .getsda = { 0x10, PORT_STAT, 1 },
  68         },
  69         /* type 6: Barco LPT->DVI (K5800236) adapter */
  70         {
  71                 .setsda = { 0x02, PORT_DATA, 1 },
  72                 .setscl = { 0x01, PORT_DATA, 1 },
  73                 .getsda = { 0x20, PORT_STAT, 0 },
  74                 .getscl = { 0x40, PORT_STAT, 0 },
  75                 .init   = { 0xfc, PORT_DATA, 0 },
  76         },
  77         /* type 7: One For All JP1 parallel port adapter */
  78         {
  79                 .setsda = { 0x01, PORT_DATA, 0 },
  80                 .setscl = { 0x02, PORT_DATA, 0 },
  81                 .getsda = { 0x80, PORT_STAT, 1 },
  82                 .init   = { 0x04, PORT_DATA, 1 },
  83         },
  84         /* type 8: VCT-jig */
  85         {
  86                 .setsda = { 0x04, PORT_DATA, 1 },
  87                 .setscl = { 0x01, PORT_DATA, 1 },
  88                 .getsda = { 0x40, PORT_STAT, 0 },
  89                 .getscl = { 0x80, PORT_STAT, 1 },
  90         },
  91 };
  92
  93 static int type = -1;
  94 module_param(type, int, 0);
  95 MODULE_PARM_DESC(type,
  96         "Type of adapter:\n"
  97         " 0 = Philips adapter\n"
  98         " 1 = home brew teletext adapter\n"
  99         " 2 = Velleman K8000 adapter\n"
 100         " 3 = ELV adapter\n"
 101         " 4 = ADM1032 evaluation board\n"
 102         " 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n"
 103         " 6 = Barco LPT->DVI (K5800236) adapter\n"
 104         " 7 = One For All JP1 parallel port adapter\n"
 105         " 8 = VCT-jig\n"
 106 );