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