1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
handle em28xx IR remotes via linux kernel input layer.
Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
Markus Rechberger <mrechberger@gmail.com>
Mauro Carvalho Chehab <mchehab@infradead.org>
Sascha Sommer <saschasommer@freenet.de>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/usb.h>
#include "em28xx.h"
static unsigned int disable_ir = 0;
module_param(disable_ir, int, 0444);
MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
static unsigned int ir_debug = 0;
module_param(ir_debug, int, 0644);
MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
#define dprintk(fmt, arg...) if (ir_debug) \
printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
/* ----------------------------------------------------------------------- */
static int get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
unsigned char b;
/* poll IR chip */
if (1 != i2c_master_recv(&ir->c,&b,1)) {
dprintk("read error\n");
return -EIO;
}
/* it seems that 0xFE indicates that a button is still hold
down, while 0xff indicates that no button is hold
down. 0xfe sequences are sometimes interrupted by 0xFF */
dprintk("key %02x\n", b);
if (b == 0xff)
return 0;
if (b == 0xfe)
/* keep old data */
return 1;
*ir_key = b;
*ir_raw = b;
return 1;
}
static int get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
unsigned char buf[2];
unsigned char code;
/* poll IR chip */
if (2 != i2c_master_recv(&ir->c,buf,2))
return -EIO;
/* Does eliminate repeated parity code */
if (buf[1]==0xff)
return 0;
ir->old=buf[1];
/* Rearranges bits to the right order */
code= ((buf[0]&0x01)<<5) | /* 0010 0000 */
((buf[0]&0x02)<<3) | /* 0001 0000 */
((buf[0]&0x04)<<1) | /* 0000 1000 */
((buf[0]&0x08)>>1) | /* 0000 0100 */
((buf[0]&0x10)>>3) | /* 0000 0010 */
((buf[0]&0x20)>>5); /* 0000 0001 */
dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]);
/* return key */
*ir_key = code;
*ir_raw = code;
return 1;
}
static int get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
unsigned char buf[3];
/* poll IR chip */
if (3 != i2c_master_recv(&ir->c,buf,3)) {
dprintk("read error\n");
return -EIO;
}
dprintk("key %02x\n", buf[2]&0x3f);
if (buf[0]!=0x00){
return 0;
}
*ir_key = buf[2]&0x3f;
*ir_raw = buf[2]&0x3f;
return 1;
}
/* ----------------------------------------------------------------------- */
void em28xx_set_ir(struct em28xx * dev,struct IR_i2c *ir)
{
if (disable_ir) {
ir->get_key=NULL;
return ;
}
/* detect & configure */
switch (dev->model) {
case (EM2800_BOARD_UNKNOWN):
break;
case (EM2820_BOARD_UNKNOWN):
break;
case (EM2800_BOARD_TERRATEC_CINERGY_200):
case (EM2820_BOARD_TERRATEC_CINERGY_250):
ir->ir_codes = ir_codes_em_terratec;
ir->get_key = get_key_terratec;
snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM28XX Terratec)");
break;
case (EM2820_BOARD_PINNACLE_USB_2):
ir->ir_codes = ir_codes_pinnacle_grey;
ir->get_key = get_key_pinnacle_usb_grey;
snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM28XX Pinnacle PCTV)");
break;
case (EM2820_BOARD_HAUPPAUGE_WINTV_USB_2):
ir->ir_codes = ir_codes_hauppauge_new;
ir->get_key = get_key_em_haup;
snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2840 Hauppauge)");
break;
case (EM2820_BOARD_MSI_VOX_USB_2):
break;
case (EM2800_BOARD_LEADTEK_WINFAST_USBII):
break;
case (EM2800_BOARD_KWORLD_USB2800):
break;
}
}
/* ----------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
|
