1/* ------------------------------------------------------------------------ *
2 * i2c-parport.h I2C bus over parallel port                                 *
3 * ------------------------------------------------------------------------ *
4   Copyright (C) 2003-2010 Jean Delvare <jdelvare@suse.de>
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
17#define PORT_DATA	0
18#define PORT_STAT	1
19#define PORT_CTRL	2
20
21struct lineop {
22	u8 val;
23	u8 port;
24	u8 inverted;
25};
26
27struct adapter_parm {
28	struct lineop setsda;
29	struct lineop setscl;
30	struct lineop getsda;
31	struct lineop getscl;
32	struct lineop init;
33	unsigned int smbus_alert:1;
34};
35
36static const struct adapter_parm adapter_parm[] = {
37	/* type 0: Philips adapter */
38	{
39		.setsda	= { 0x80, PORT_DATA, 1 },
40		.setscl	= { 0x08, PORT_CTRL, 0 },
41		.getsda	= { 0x80, PORT_STAT, 0 },
42		.getscl	= { 0x08, PORT_STAT, 0 },
43	},
44	/* type 1: home brew teletext adapter */
45	{
46		.setsda	= { 0x02, PORT_DATA, 0 },
47		.setscl	= { 0x01, PORT_DATA, 0 },
48		.getsda	= { 0x80, PORT_STAT, 1 },
49	},
50	/* type 2: Velleman K8000 adapter */
51	{
52		.setsda	= { 0x02, PORT_CTRL, 1 },
53		.setscl	= { 0x08, PORT_CTRL, 1 },
54		.getsda	= { 0x10, PORT_STAT, 0 },
55	},
56	/* type 3: ELV adapter */
57	{
58		.setsda	= { 0x02, PORT_DATA, 1 },
59		.setscl	= { 0x01, PORT_DATA, 1 },
60		.getsda	= { 0x40, PORT_STAT, 1 },
61		.getscl	= { 0x08, PORT_STAT, 1 },
62	},
63	/* type 4: ADM1032 evaluation board */
64	{
65		.setsda	= { 0x02, PORT_DATA, 1 },
66		.setscl	= { 0x01, PORT_DATA, 1 },
67		.getsda	= { 0x10, PORT_STAT, 1 },
68		.init	= { 0xf0, PORT_DATA, 0 },
69		.smbus_alert = 1,
70	},
71	/* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */
72	{
73		.setsda	= { 0x02, PORT_DATA, 1 },
74		.setscl	= { 0x01, PORT_DATA, 1 },
75		.getsda	= { 0x10, PORT_STAT, 1 },
76	},
77	/* type 6: Barco LPT->DVI (K5800236) adapter */
78	{
79		.setsda	= { 0x02, PORT_DATA, 1 },
80		.setscl	= { 0x01, PORT_DATA, 1 },
81		.getsda	= { 0x20, PORT_STAT, 0 },
82		.getscl	= { 0x40, PORT_STAT, 0 },
83		.init	= { 0xfc, PORT_DATA, 0 },
84	},
85	/* type 7: One For All JP1 parallel port adapter */
86	{
87		.setsda	= { 0x01, PORT_DATA, 0 },
88		.setscl	= { 0x02, PORT_DATA, 0 },
89		.getsda	= { 0x80, PORT_STAT, 1 },
90		.init	= { 0x04, PORT_DATA, 1 },
91	},
92};
93
94static int type = -1;
95module_param(type, int, 0);
96MODULE_PARM_DESC(type,
97	"Type of adapter:\n"
98	" 0 = Philips adapter\n"
99	" 1 = home brew teletext adapter\n"
100	" 2 = Velleman K8000 adapter\n"
101	" 3 = ELV adapter\n"
102	" 4 = ADM1032 evaluation board\n"
103	" 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n"
104	" 6 = Barco LPT->DVI (K5800236) adapter\n"
105	" 7 = One For All JP1 parallel port adapter\n"
106);
107