tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 *
3 * some common structs and functions to handle infrared remotes via
4 * input layer ...
5 *
6 * (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#include <linux/input.h>
24
25
26#define IR_TYPE_RC5 1
27#define IR_TYPE_PD 2 /* Pulse distance encoded IR */
28#define IR_TYPE_OTHER 99
29
30#define IR_KEYTAB_TYPE u32
31#define IR_KEYTAB_SIZE 128 // enougth for rc5, probably need more some day ...
32
33#define IR_KEYCODE(tab,code) (((unsigned)code < IR_KEYTAB_SIZE) \
34 ? tab[code] : KEY_RESERVED)
35
36struct ir_input_state {
37 /* configuration */
38 int ir_type;
39 IR_KEYTAB_TYPE ir_codes[IR_KEYTAB_SIZE];
40
41 /* key info */
42 u32 ir_raw; /* raw data */
43 u32 ir_key; /* ir key code */
44 u32 keycode; /* linux key code */
45 int keypressed; /* current state */
46};
47
48extern IR_KEYTAB_TYPE ir_codes_rc5_tv[IR_KEYTAB_SIZE];
49extern IR_KEYTAB_TYPE ir_codes_winfast[IR_KEYTAB_SIZE];
50extern IR_KEYTAB_TYPE ir_codes_empty[IR_KEYTAB_SIZE];
51extern IR_KEYTAB_TYPE ir_codes_hauppauge_new[IR_KEYTAB_SIZE];
52extern IR_KEYTAB_TYPE ir_codes_pixelview[IR_KEYTAB_SIZE];
53
54void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
55 int ir_type, IR_KEYTAB_TYPE *ir_codes);
56void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir);
57void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
58 u32 ir_key, u32 ir_raw);
59u32 ir_extract_bits(u32 data, u32 mask);
60int ir_dump_samples(u32 *samples, int count);
61int ir_decode_biphase(u32 *samples, int count, int low, int high);
62int ir_decode_pulsedistance(u32 *samples, int count, int low, int high);
63
64/*
65 * Local variables:
66 * c-basic-offset: 8
67 * End:
68 */