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Diffstat (limited to 'drivers/media/video/em28xx/em28xx-input.c')
-rw-r--r--drivers/media/video/em28xx/em28xx-input.c184
1 files changed, 184 insertions, 0 deletions
diff --git a/drivers/media/video/em28xx/em28xx-input.c b/drivers/media/video/em28xx/em28xx-input.c
new file mode 100644
index 000000000000..32c49df58adc
--- /dev/null
+++ b/drivers/media/video/em28xx/em28xx-input.c
@@ -0,0 +1,184 @@
1/*
2 handle em28xx IR remotes via linux kernel input layer.
3
4 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
5 Markus Rechberger <mrechberger@gmail.com>
6 Mauro Carvalho Chehab <mchehab@brturbo.com.br>
7 Sascha Sommer <saschasommer@freenet.de>
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24#include <linux/module.h>
25#include <linux/moduleparam.h>
26#include <linux/init.h>
27#include <linux/delay.h>
28#include <linux/sched.h>
29#include <linux/interrupt.h>
30#include <linux/input.h>
31#include <linux/usb.h>
32
33#include "em28xx.h"
34
35static unsigned int disable_ir = 0;
36module_param(disable_ir, int, 0444);
37MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
38
39static unsigned int ir_debug = 0;
40module_param(ir_debug, int, 0644);
41MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
42
43#define dprintk(fmt, arg...) if (ir_debug) \
44 printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
45
46/* ---------------------------------------------------------------------- */
47
48static IR_KEYTAB_TYPE ir_codes_em_terratec[IR_KEYTAB_SIZE] = {
49 [ 0x01 ] = KEY_CHANNEL,
50 [ 0x02 ] = KEY_SELECT,
51 [ 0x03 ] = KEY_MUTE,
52 [ 0x04 ] = KEY_POWER,
53 [ 0x05 ] = KEY_KP1,
54 [ 0x06 ] = KEY_KP2,
55 [ 0x07 ] = KEY_KP3,
56 [ 0x08 ] = KEY_CHANNELUP,
57 [ 0x09 ] = KEY_KP4,
58 [ 0x0a ] = KEY_KP5,
59 [ 0x0b ] = KEY_KP6,
60 [ 0x0c ] = KEY_CHANNELDOWN,
61 [ 0x0d ] = KEY_KP7,
62 [ 0x0e ] = KEY_KP8,
63 [ 0x0f ] = KEY_KP9,
64 [ 0x10 ] = KEY_VOLUMEUP,
65 [ 0x11 ] = KEY_KP0,
66 [ 0x12 ] = KEY_MENU,
67 [ 0x13 ] = KEY_PRINT,
68 [ 0x14 ] = KEY_VOLUMEDOWN,
69 [ 0x16 ] = KEY_PAUSE,
70 [ 0x18 ] = KEY_RECORD,
71 [ 0x19 ] = KEY_REWIND,
72 [ 0x1a ] = KEY_PLAY,
73 [ 0x1b ] = KEY_FORWARD,
74 [ 0x1c ] = KEY_BACKSPACE,
75 [ 0x1e ] = KEY_STOP,
76 [ 0x40 ] = KEY_ZOOM,
77};
78
79/* ----------------------------------------------------------------------- */
80
81static int get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
82{
83 unsigned char b;
84
85 /* poll IR chip */
86 if (1 != i2c_master_recv(&ir->c,&b,1)) {
87 dprintk("read error\n");
88 return -EIO;
89 }
90
91 /* it seems that 0xFE indicates that a button is still hold
92 down, while 0xff indicates that no button is hold
93 down. 0xfe sequences are sometimes interrupted by 0xFF */
94
95 dprintk("key %02x\n", b);
96
97 if (b == 0xff)
98 return 0;
99
100 if (b == 0xfe)
101 /* keep old data */
102 return 1;
103
104 *ir_key = b;
105 *ir_raw = b;
106 return 1;
107}
108
109
110static int get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
111{
112 unsigned char buf[2];
113 unsigned char code;
114
115 /* poll IR chip */
116 if (2 != i2c_master_recv(&ir->c,buf,2))
117 return -EIO;
118
119 /* Does eliminate repeated parity code */
120 if (buf[1]==0xff)
121 return 0;
122
123 /* avoid fast reapeating */
124 if (buf[1]==ir->old)
125 return 0;
126 ir->old=buf[1];
127
128 /* Rearranges bits to the right order */
129 code= ((buf[0]&0x01)<<5) | /* 0010 0000 */
130 ((buf[0]&0x02)<<3) | /* 0001 0000 */
131 ((buf[0]&0x04)<<1) | /* 0000 1000 */
132 ((buf[0]&0x08)>>1) | /* 0000 0100 */
133 ((buf[0]&0x10)>>3) | /* 0000 0010 */
134 ((buf[0]&0x20)>>5); /* 0000 0001 */
135
136 dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]);
137
138 /* return key */
139 *ir_key = code;
140 *ir_raw = code;
141 return 1;
142}
143
144/* ----------------------------------------------------------------------- */
145void em28xx_set_ir(struct em28xx * dev,struct IR_i2c *ir)
146{
147 if (disable_ir) {
148 ir->get_key=NULL;
149 return ;
150 }
151
152 /* detect & configure */
153 switch (dev->model) {
154 case (EM2800_BOARD_UNKNOWN):
155 break;
156 case (EM2820_BOARD_UNKNOWN):
157 break;
158 case (EM2800_BOARD_TERRATEC_CINERGY_200):
159 case (EM2820_BOARD_TERRATEC_CINERGY_250):
160 ir->ir_codes = ir_codes_em_terratec;
161 ir->get_key = get_key_terratec;
162 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM28XX Terratec)");
163 break;
164 case (EM2820_BOARD_PINNACLE_USB_2):
165 break;
166 case (EM2820_BOARD_HAUPPAUGE_WINTV_USB_2):
167 ir->ir_codes = ir_codes_hauppauge_new;
168 ir->get_key = get_key_em_haup;
169 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2840 Hauppauge)");
170 break;
171 case (EM2820_BOARD_MSI_VOX_USB_2):
172 break;
173 case (EM2800_BOARD_LEADTEK_WINFAST_USBII):
174 break;
175 case (EM2800_BOARD_KWORLD_USB2800):
176 break;
177 }
178}
179
180/* ----------------------------------------------------------------------
181 * Local variables:
182 * c-basic-offset: 8
183 * End:
184 */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-16 16:14:44 -0500