mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
55249cf750
This simple patch adds support to i2c-parport for the One For All remote JP1 parallel port interfaces which can be found detailed at: http://www.hifi-remote.com/jp1/hardware.shtml These allow access to the internal configuration EEPROM on various remote controls and there are a variety of Windows tools that make use of this hardware. I have tested this patch with the "simple" parallel port device and a One For All URC-7562 and confirmed that the data read using the eeprom i2c driver matches that returned by the Windows "IR" JP1 tool. Signed-off-by: Jonathan McDowell <noodles@earth.li> Signed-off-by: Jean Delvare <khali@linux-fr.org>
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/* ------------------------------------------------------------------------ *
|
|
* i2c-parport.h I2C bus over parallel port *
|
|
* ------------------------------------------------------------------------ *
|
|
Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
* ------------------------------------------------------------------------ */
|
|
|
|
#ifdef DATA
|
|
#undef DATA
|
|
#endif
|
|
|
|
#define DATA 0
|
|
#define STAT 1
|
|
#define CTRL 2
|
|
|
|
struct lineop {
|
|
u8 val;
|
|
u8 port;
|
|
u8 inverted;
|
|
};
|
|
|
|
struct adapter_parm {
|
|
struct lineop setsda;
|
|
struct lineop setscl;
|
|
struct lineop getsda;
|
|
struct lineop getscl;
|
|
struct lineop init;
|
|
};
|
|
|
|
static struct adapter_parm adapter_parm[] = {
|
|
/* type 0: Philips adapter */
|
|
{
|
|
.setsda = { 0x80, DATA, 1 },
|
|
.setscl = { 0x08, CTRL, 0 },
|
|
.getsda = { 0x80, STAT, 0 },
|
|
.getscl = { 0x08, STAT, 0 },
|
|
},
|
|
/* type 1: home brew teletext adapter */
|
|
{
|
|
.setsda = { 0x02, DATA, 0 },
|
|
.setscl = { 0x01, DATA, 0 },
|
|
.getsda = { 0x80, STAT, 1 },
|
|
},
|
|
/* type 2: Velleman K8000 adapter */
|
|
{
|
|
.setsda = { 0x02, CTRL, 1 },
|
|
.setscl = { 0x08, CTRL, 1 },
|
|
.getsda = { 0x10, STAT, 0 },
|
|
},
|
|
/* type 3: ELV adapter */
|
|
{
|
|
.setsda = { 0x02, DATA, 1 },
|
|
.setscl = { 0x01, DATA, 1 },
|
|
.getsda = { 0x40, STAT, 1 },
|
|
.getscl = { 0x08, STAT, 1 },
|
|
},
|
|
/* type 4: ADM1032 evaluation board */
|
|
{
|
|
.setsda = { 0x02, DATA, 1 },
|
|
.setscl = { 0x01, DATA, 1 },
|
|
.getsda = { 0x10, STAT, 1 },
|
|
.init = { 0xf0, DATA, 0 },
|
|
},
|
|
/* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */
|
|
{
|
|
.setsda = { 0x02, DATA, 1 },
|
|
.setscl = { 0x01, DATA, 1 },
|
|
.getsda = { 0x10, STAT, 1 },
|
|
},
|
|
/* type 6: Barco LPT->DVI (K5800236) adapter */
|
|
{
|
|
.setsda = { 0x02, DATA, 1 },
|
|
.setscl = { 0x01, DATA, 1 },
|
|
.getsda = { 0x20, STAT, 0 },
|
|
.getscl = { 0x40, STAT, 0 },
|
|
.init = { 0xfc, DATA, 0 },
|
|
},
|
|
/* type 7: One For All JP1 parallel port adapter */
|
|
{
|
|
.setsda = { 0x01, DATA, 0 },
|
|
.setscl = { 0x02, DATA, 0 },
|
|
.getsda = { 0x80, STAT, 1 },
|
|
.init = { 0x04, DATA, 1 },
|
|
},
|
|
};
|
|
|
|
static int type = -1;
|
|
module_param(type, int, 0);
|
|
MODULE_PARM_DESC(type,
|
|
"Type of adapter:\n"
|
|
" 0 = Philips adapter\n"
|
|
" 1 = home brew teletext adapter\n"
|
|
" 2 = Velleman K8000 adapter\n"
|
|
" 3 = ELV adapter\n"
|
|
" 4 = ADM1032 evaluation board\n"
|
|
" 5 = ADM1025, ADM1030 and ADM1031 evaluation boards\n"
|
|
" 6 = Barco LPT->DVI (K5800236) adapter\n"
|
|
" 7 = One For All JP1 parallel port adapter\n"
|
|
);
|