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/include/media/ir-common.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 107 lines | 61 code | 16 blank | 30 comment | 0 complexity | 56ed57413a93343864203d62c686f33d MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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#ifndef _IR_COMMON
 24#define _IR_COMMON
 25
 26#include <linux/input.h>
 27#include <linux/workqueue.h>
 28#include <linux/interrupt.h>
 29#include <media/ir-core.h>
 30
 31#define RC5_START(x)	(((x)>>12)&3)
 32#define RC5_TOGGLE(x)	(((x)>>11)&1)
 33#define RC5_ADDR(x)	(((x)>>6)&31)
 34#define RC5_INSTR(x)	((x)&63)
 35
 36struct ir_input_state {
 37	/* configuration */
 38	u64      ir_type;
 39
 40	/* key info */
 41	u32                ir_key;      /* ir scancode */
 42	u32                keycode;     /* linux key code */
 43	int                keypressed;  /* current state */
 44};
 45
 46/* this was saa7134_ir and bttv_ir, moved here for
 47 * rc5 decoding. */
 48struct card_ir {
 49	struct input_dev        *dev;
 50	struct ir_input_state   ir;
 51	char                    name[32];
 52	char                    phys[32];
 53	int			users;
 54
 55	u32			running:1;
 56	struct ir_dev_props	props;
 57
 58	/* Usual gpio signalling */
 59
 60	u32                     mask_keycode;
 61	u32                     mask_keydown;
 62	u32                     mask_keyup;
 63	u32                     polling;
 64	u32                     last_gpio;
 65	int			shift_by;
 66	int			start; // What should RC5_START() be
 67	int			addr; // What RC5_ADDR() should be.
 68	int			rc5_key_timeout;
 69	int			rc5_remote_gap;
 70	struct work_struct      work;
 71	struct timer_list       timer;
 72
 73	/* RC5 gpio */
 74	u32 rc5_gpio;
 75	struct timer_list timer_end;	/* timer_end for code completion */
 76	struct timer_list timer_keyup;	/* timer_end for key release */
 77	u32 last_rc5;			/* last good rc5 code */
 78	u32 last_bit;			/* last raw bit seen */
 79	u32 code;			/* raw code under construction */
 80	struct timeval base_time;	/* time of last seen code */
 81	int active;			/* building raw code */
 82
 83	/* NEC decoding */
 84	u32			nec_gpio;
 85	struct tasklet_struct   tlet;
 86
 87	/* IR core raw decoding */
 88	u32			raw_decode;
 89};
 90
 91/* Routines from ir-functions.c */
 92
 93int ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
 94		   const u64 ir_type);
 95void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir);
 96void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
 97		      u32 ir_key);
 98u32  ir_extract_bits(u32 data, u32 mask);
 99int  ir_dump_samples(u32 *samples, int count);
100int  ir_decode_biphase(u32 *samples, int count, int low, int high);
101int  ir_decode_pulsedistance(u32 *samples, int count, int low, int high);
102u32  ir_rc5_decode(unsigned int code);
103
104void ir_rc5_timer_end(unsigned long data);
105void ir_rc5_timer_keyup(unsigned long data);
106
107#endif