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 25 struct lineop { 26 u8 val; 27 u8 port; 28 u8 inverted; 29 }; 30 31 struct 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 40 static 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 98 static int type = -1; 99 module_param(type, int, 0); 100 MODULE_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