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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* ------------------------------------------------------------------------ *
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 },
Peter Korsgaard1d26f452005-11-26 20:18:43 +010083 /* type 6: Barco LPT->DVI (K5800236) adapter */
84 {
85 .setsda = { 0x02, DATA, 1 },
86 .setscl = { 0x01, DATA, 1 },
87 .getsda = { 0x20, STAT, 0 },
88 .getscl = { 0x40, STAT, 0 },
89 .init = { 0xfc, DATA, 0 },
90 },
Jonathan McDowell55249cf2007-02-13 22:09:02 +010091 /* type 7: One For All JP1 parallel port adapter */
92 {
93 .setsda = { 0x01, DATA, 0 },
94 .setscl = { 0x02, DATA, 0 },
95 .getsda = { 0x80, STAT, 1 },
96 .init = { 0x04, DATA, 1 },
97 },
Linus Torvalds1da177e2005-04-16 15:20:36 -070098};
99
Mark M. Hoffmane97b81d2006-03-23 16:50:25 +0100100static int type = -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101module_param(type, int, 0);
102MODULE_PARM_DESC(type,
103 "Type of adapter:\n"
104 " 0 = Philips adapter\n"
105 " 1 = home brew teletext adapter\n"
106 " 2 = Velleman K8000 adapter\n"
107 " 3 = ELV adapter\n"
108 " 4 = ADM1032 evaluation board\n"
Peter Korsgaard1d26f452005-11-26 20:18:43 +0100109 " 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n"
110 " 6 = Barco LPT->DVI (K5800236) adapter\n"
Jonathan McDowell55249cf2007-02-13 22:09:02 +0100111 " 7 = One For All JP1 parallel port adapter\n"
Peter Korsgaard1d26f452005-11-26 20:18:43 +0100112);