[deliverable/linux.git] / drivers / media / IR / ir-rc6-decoder.c

/* ir-rc6-decoder.c - A decoder for the RC6 IR protocol
 *
 * Copyright (C) 2010 by David Härdeman <david@hardeman.nu>
 *
 * 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 version 2 of the License.
 *
 * 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.
 */

#include "ir-core-priv.h"

/*
 * This decoder currently supports:
 * RC6-0-16	(standard toggle bit in header)
 * RC6-6A-24	(no toggle bit)
 * RC6-6A-32	(MCE version with toggle bit in body)
 */

#define RC6_UNIT		444444	/* us */
#define RC6_HEADER_NBITS	4	/* not including toggle bit */
#define RC6_0_NBITS		16
#define RC6_6A_SMALL_NBITS	24
#define RC6_6A_LARGE_NBITS	32
#define RC6_PREFIX_PULSE	(6 * RC6_UNIT)
#define RC6_PREFIX_SPACE	(2 * RC6_UNIT)
#define RC6_BIT_START		(1 * RC6_UNIT)
#define RC6_BIT_END		(1 * RC6_UNIT)
#define RC6_TOGGLE_START	(2 * RC6_UNIT)
#define RC6_TOGGLE_END		(2 * RC6_UNIT)
#define RC6_MODE_MASK		0x07	/* for the header bits */
#define RC6_STARTBIT_MASK	0x08	/* for the header bits */
#define RC6_6A_MCE_TOGGLE_MASK	0x8000	/* for the body bits */

/* Used to register rc6_decoder clients */
static LIST_HEAD(decoder_list);
static DEFINE_SPINLOCK(decoder_lock);

enum rc6_mode {
	RC6_MODE_0,
	RC6_MODE_6A,
	RC6_MODE_UNKNOWN,
};

enum rc6_state {
	STATE_INACTIVE,
	STATE_PREFIX_SPACE,
	STATE_HEADER_BIT_START,
	STATE_HEADER_BIT_END,
	STATE_TOGGLE_START,
	STATE_TOGGLE_END,
	STATE_BODY_BIT_START,
	STATE_BODY_BIT_END,
	STATE_FINISHED,
};

struct decoder_data {
	struct list_head	list;
	struct ir_input_dev	*ir_dev;

	/* State machine control */
	enum rc6_state		state;
	u8			header;
	u32			body;
	struct ir_raw_event	prev_ev;
	bool			toggle;
	unsigned		count;
	unsigned		wanted_bits;
};


/**
 * get_decoder_data()	- gets decoder data
 * @input_dev:	input device
 *
 * Returns the struct decoder_data that corresponds to a device
 */
static struct decoder_data *get_decoder_data(struct  ir_input_dev *ir_dev)
{
	struct decoder_data *data = NULL;

	spin_lock(&decoder_lock);
	list_for_each_entry(data, &decoder_list, list) {
		if (data->ir_dev == ir_dev)
			break;
	}
	spin_unlock(&decoder_lock);
	return data;
}

static enum rc6_mode rc6_mode(struct decoder_data *data) {
	switch (data->header & RC6_MODE_MASK) {
	case 0:
		return RC6_MODE_0;
	case 6:
		if (!data->toggle)
			return RC6_MODE_6A;
		/* fall through */
	default:
		return RC6_MODE_UNKNOWN;
	}
}

/**
 * ir_rc6_decode() - Decode one RC6 pulse or space
 * @input_dev:	the struct input_dev descriptor of the device
 * @ev:		the struct ir_raw_event descriptor of the pulse/space
 *
 * This function returns -EINVAL if the pulse violates the state machine
 */
static int ir_rc6_decode(struct input_dev *input_dev, struct ir_raw_event ev)
{
	struct decoder_data *data;
	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	u32 scancode;
	u8 toggle;

	data = get_decoder_data(ir_dev);
	if (!data)
		return -EINVAL;

	if (!(ir_dev->raw->enabled_protocols & IR_TYPE_RC6))
		return 0;

	if (IS_RESET(ev)) {
		data->state = STATE_INACTIVE;
		return 0;
	}

	if (!geq_margin(ev.duration, RC6_UNIT, RC6_UNIT / 2))
		goto out;

again:
	IR_dprintk(2, "RC6 decode started at state %i (%uus %s)\n",
		   data->state, TO_US(ev.duration), TO_STR(ev.pulse));

	if (!geq_margin(ev.duration, RC6_UNIT, RC6_UNIT / 2))
		return 0;

	switch (data->state) {

	case STATE_INACTIVE:
		if (!ev.pulse)
			break;

		/* Note: larger margin on first pulse since each RC6_UNIT
		   is quite short and some hardware takes some time to
		   adjust to the signal */
		if (!eq_margin(ev.duration, RC6_PREFIX_PULSE, RC6_UNIT))
			break;

		data->state = STATE_PREFIX_SPACE;
		data->count = 0;
		return 0;

	case STATE_PREFIX_SPACE:
		if (ev.pulse)
			break;

		if (!eq_margin(ev.duration, RC6_PREFIX_SPACE, RC6_UNIT / 2))
			break;

		data->state = STATE_HEADER_BIT_START;
		return 0;

	case STATE_HEADER_BIT_START:
		if (!eq_margin(ev.duration, RC6_BIT_START, RC6_UNIT / 2))
			break;

		data->header <<= 1;
		if (ev.pulse)
			data->header |= 1;
		data->count++;
		data->prev_ev = ev;
		data->state = STATE_HEADER_BIT_END;
		return 0;

	case STATE_HEADER_BIT_END:
		if (!is_transition(&ev, &data->prev_ev))
			break;

		if (data->count == RC6_HEADER_NBITS)
			data->state = STATE_TOGGLE_START;
		else
			data->state = STATE_HEADER_BIT_START;

		decrease_duration(&ev, RC6_BIT_END);
		goto again;

	case STATE_TOGGLE_START:
		if (!eq_margin(ev.duration, RC6_TOGGLE_START, RC6_UNIT / 2))
			break;

		data->toggle = ev.pulse;
		data->prev_ev = ev;
		data->state = STATE_TOGGLE_END;
		return 0;

	case STATE_TOGGLE_END:
		if (!is_transition(&ev, &data->prev_ev) ||
		    !geq_margin(ev.duration, RC6_TOGGLE_END, RC6_UNIT / 2))
			break;

		if (!(data->header & RC6_STARTBIT_MASK)) {
			IR_dprintk(1, "RC6 invalid start bit\n");
			break;
		}

		data->state = STATE_BODY_BIT_START;
		data->prev_ev = ev;
		decrease_duration(&ev, RC6_TOGGLE_END);
		data->count = 0;

		switch (rc6_mode(data)) {
		case RC6_MODE_0:
			data->wanted_bits = RC6_0_NBITS;
			break;
		case RC6_MODE_6A:
			/* This might look weird, but we basically
			   check the value of the first body bit to
			   determine the number of bits in mode 6A */
			if ((!ev.pulse && !geq_margin(ev.duration, RC6_UNIT, RC6_UNIT / 2)) ||
			    geq_margin(ev.duration, RC6_UNIT, RC6_UNIT / 2))
				data->wanted_bits = RC6_6A_LARGE_NBITS;
			else
				data->wanted_bits = RC6_6A_SMALL_NBITS;
			break;
		default:
			IR_dprintk(1, "RC6 unknown mode\n");
			goto out;
		}
		goto again;

	case STATE_BODY_BIT_START:
		if (!eq_margin(ev.duration, RC6_BIT_START, RC6_UNIT / 2))
			break;

		data->body <<= 1;
		if (ev.pulse)
			data->body |= 1;
		data->count++;
		data->prev_ev = ev;

		data->state = STATE_BODY_BIT_END;
		return 0;

	case STATE_BODY_BIT_END:
		if (!is_transition(&ev, &data->prev_ev))
			break;

		if (data->count == data->wanted_bits)
			data->state = STATE_FINISHED;
		else
			data->state = STATE_BODY_BIT_START;

		decrease_duration(&ev, RC6_BIT_END);
		goto again;

	case STATE_FINISHED:
		if (ev.pulse)
			break;

		switch (rc6_mode(data)) {
		case RC6_MODE_0:
			scancode = data->body & 0xffff;
			toggle = data->toggle;
			IR_dprintk(1, "RC6(0) scancode 0x%04x (toggle: %u)\n",
				   scancode, toggle);
			break;
		case RC6_MODE_6A:
			if (data->wanted_bits == RC6_6A_LARGE_NBITS) {
				toggle = data->body & RC6_6A_MCE_TOGGLE_MASK ? 1 : 0;
				scancode = data->body & ~RC6_6A_MCE_TOGGLE_MASK;
			} else {
				toggle = 0;
				scancode = data->body & 0xffffff;
			}

			IR_dprintk(1, "RC6(6A) scancode 0x%08x (toggle: %u)\n",
				   scancode, toggle);
			break;
		default:
			IR_dprintk(1, "RC6 unknown mode\n");
			goto out;
		}

		ir_keydown(input_dev, scancode, toggle);
		data->state = STATE_INACTIVE;
		return 0;
	}

out:
	IR_dprintk(1, "RC6 decode failed at state %i (%uus %s)\n",
		   data->state, TO_US(ev.duration), TO_STR(ev.pulse));
	data->state = STATE_INACTIVE;
	return -EINVAL;
}

static int ir_rc6_register(struct input_dev *input_dev)
{
	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	struct decoder_data *data;

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->ir_dev = ir_dev;

	spin_lock(&decoder_lock);
	list_add_tail(&data->list, &decoder_list);
	spin_unlock(&decoder_lock);

	return 0;
}

static int ir_rc6_unregister(struct input_dev *input_dev)
{
	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	static struct decoder_data *data;

	data = get_decoder_data(ir_dev);
	if (!data)
		return 0;

	spin_lock(&decoder_lock);
	list_del(&data->list);
	spin_unlock(&decoder_lock);

	return 0;
}

static struct ir_raw_handler rc6_handler = {
	.protocols	= IR_TYPE_RC6,
	.decode		= ir_rc6_decode,
	.raw_register	= ir_rc6_register,
	.raw_unregister	= ir_rc6_unregister,
};

static int __init ir_rc6_decode_init(void)
{
	ir_raw_handler_register(&rc6_handler);

	printk(KERN_INFO "IR RC6 protocol handler initialized\n");
	return 0;
}

static void __exit ir_rc6_decode_exit(void)
{
	ir_raw_handler_unregister(&rc6_handler);
}

module_init(ir_rc6_decode_init);
module_exit(ir_rc6_decode_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Härdeman <david@hardeman.nu>");
MODULE_DESCRIPTION("RC6 IR protocol decoder");
Commit	Line	Data
784a4931 DH	1	/* ir-rc6-decoder.c - A decoder for the RC6 IR protocol
	2	*
	3	* Copyright (C) 2010 by David Härdeman <david@hardeman.nu>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation version 2 of the License.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*/
	14
	15	#include "ir-core-priv.h"
	16
	17	/*
	18	* This decoder currently supports:
	19	* RC6-0-16 (standard toggle bit in header)
	20	* RC6-6A-24 (no toggle bit)
	21	* RC6-6A-32 (MCE version with toggle bit in body)
	22	*/
	23
	24	#define RC6_UNIT 444444 /* us */
	25	#define RC6_HEADER_NBITS 4 /* not including toggle bit */
	26	#define RC6_0_NBITS 16
	27	#define RC6_6A_SMALL_NBITS 24
	28	#define RC6_6A_LARGE_NBITS 32
e40b1127 DH	29	#define RC6_PREFIX_PULSE (6 * RC6_UNIT)
	30	#define RC6_PREFIX_SPACE (2 * RC6_UNIT)
	31	#define RC6_BIT_START (1 * RC6_UNIT)
	32	#define RC6_BIT_END (1 * RC6_UNIT)
	33	#define RC6_TOGGLE_START (2 * RC6_UNIT)
	34	#define RC6_TOGGLE_END (2 * RC6_UNIT)
784a4931 DH	35	#define RC6_MODE_MASK 0x07 /* for the header bits */
	36	#define RC6_STARTBIT_MASK 0x08 /* for the header bits */
	37	#define RC6_6A_MCE_TOGGLE_MASK 0x8000 /* for the body bits */
	38
	39	/* Used to register rc6_decoder clients */
	40	static LIST_HEAD(decoder_list);
	41	static DEFINE_SPINLOCK(decoder_lock);
	42
	43	enum rc6_mode {
	44	RC6_MODE_0,
	45	RC6_MODE_6A,
	46	RC6_MODE_UNKNOWN,
	47	};
	48
	49	enum rc6_state {
	50	STATE_INACTIVE,
	51	STATE_PREFIX_SPACE,
	52	STATE_HEADER_BIT_START,
	53	STATE_HEADER_BIT_END,
	54	STATE_TOGGLE_START,
	55	STATE_TOGGLE_END,
	56	STATE_BODY_BIT_START,
	57	STATE_BODY_BIT_END,
	58	STATE_FINISHED,
	59	};
	60
	61	struct decoder_data {
	62	struct list_head list;
	63	struct ir_input_dev *ir_dev;
784a4931 DH	64
	65	/* State machine control */
	66	enum rc6_state state;
	67	u8 header;
	68	u32 body;
e40b1127	69	struct ir_raw_event prev_ev;
784a4931 DH	70	bool toggle;
	71	unsigned count;
	72	unsigned wanted_bits;
	73	};
	74
	75
	76	/**
	77	* get_decoder_data() - gets decoder data
	78	* @input_dev: input device
	79	*
	80	* Returns the struct decoder_data that corresponds to a device
	81	*/
	82	static struct decoder_data get_decoder_data(struct ir_input_dev ir_dev)
	83	{
	84	struct decoder_data *data = NULL;
	85
	86	spin_lock(&decoder_lock);
	87	list_for_each_entry(data, &decoder_list, list) {
	88	if (data->ir_dev == ir_dev)
	89	break;
	90	}
	91	spin_unlock(&decoder_lock);
	92	return data;
	93	}
	94
784a4931 DH	95	static enum rc6_mode rc6_mode(struct decoder_data *data) {
	96	switch (data->header & RC6_MODE_MASK) {
	97	case 0:
	98	return RC6_MODE_0;
	99	case 6:
	100	if (!data->toggle)
	101	return RC6_MODE_6A;
	102	/* fall through */
	103	default:
	104	return RC6_MODE_UNKNOWN;
	105	}
	106	}
	107
	108	/**
	109	* ir_rc6_decode() - Decode one RC6 pulse or space
	110	* @input_dev: the struct input_dev descriptor of the device
e40b1127	111	* @ev: the struct ir_raw_event descriptor of the pulse/space
784a4931 DH	112	*
	113	* This function returns -EINVAL if the pulse violates the state machine
	114	*/
e40b1127	115	static int ir_rc6_decode(struct input_dev *input_dev, struct ir_raw_event ev)
784a4931 DH	116	{
	117	struct decoder_data *data;
	118	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	119	u32 scancode;
	120	u8 toggle;
784a4931 DH	121
	122	data = get_decoder_data(ir_dev);
	123	if (!data)
	124	return -EINVAL;
	125
667c9ebe	126	if (!(ir_dev->raw->enabled_protocols & IR_TYPE_RC6))
784a4931 DH	127	return 0;
784a4931 DH	128
e40b1127	129	if (IS_RESET(ev)) {
784a4931 DH	130	data->state = STATE_INACTIVE;
	131	return 0;
	132	}
	133
e40b1127	134	if (!geq_margin(ev.duration, RC6_UNIT, RC6_UNIT / 2))
784a4931 DH	135	goto out;
	136
	137	again:
e40b1127 DH	138	IR_dprintk(2, "RC6 decode started at state %i (%uus %s)\n",
e40b1127 DH	139	data->state, TO_US(ev.duration), TO_STR(ev.pulse));
784a4931	140
e40b1127	141	if (!geq_margin(ev.duration, RC6_UNIT, RC6_UNIT / 2))
784a4931 DH	142	return 0;
	143
	144	switch (data->state) {
	145
	146	case STATE_INACTIVE:
e40b1127 DH	147	if (!ev.pulse)
	148	break;
	149
	150	/* Note: larger margin on first pulse since each RC6_UNIT
	151	is quite short and some hardware takes some time to
	152	adjust to the signal */
	153	if (!eq_margin(ev.duration, RC6_PREFIX_PULSE, RC6_UNIT))
	154	break;
	155
	156	data->state = STATE_PREFIX_SPACE;
	157	data->count = 0;
	158	return 0;
784a4931 DH	159
784a4931 DH	160	case STATE_PREFIX_SPACE:
e40b1127 DH	161	if (ev.pulse)
	162	break;
	163
	164	if (!eq_margin(ev.duration, RC6_PREFIX_SPACE, RC6_UNIT / 2))
	165	break;
	166
	167	data->state = STATE_HEADER_BIT_START;
	168	return 0;
784a4931 DH	169
784a4931 DH	170	case STATE_HEADER_BIT_START:
e40b1127 DH	171	if (!eq_margin(ev.duration, RC6_BIT_START, RC6_UNIT / 2))
	172	break;
	173
	174	data->header <<= 1;
	175	if (ev.pulse)
	176	data->header \|= 1;
	177	data->count++;
	178	data->prev_ev = ev;
	179	data->state = STATE_HEADER_BIT_END;
	180	return 0;
784a4931 DH	181
784a4931 DH	182	case STATE_HEADER_BIT_END:
e40b1127 DH	183	if (!is_transition(&ev, &data->prev_ev))
e40b1127 DH	184	break;
784a4931	185
e40b1127 DH	186	if (data->count == RC6_HEADER_NBITS)
	187	data->state = STATE_TOGGLE_START;
	188	else
	189	data->state = STATE_HEADER_BIT_START;
	190
	191	decrease_duration(&ev, RC6_BIT_END);
	192	goto again;
784a4931 DH	193
784a4931 DH	194	case STATE_TOGGLE_START:
e40b1127 DH	195	if (!eq_margin(ev.duration, RC6_TOGGLE_START, RC6_UNIT / 2))
	196	break;
	197
	198	data->toggle = ev.pulse;
	199	data->prev_ev = ev;
	200	data->state = STATE_TOGGLE_END;
	201	return 0;
784a4931 DH	202
784a4931 DH	203	case STATE_TOGGLE_END:
e40b1127 DH	204	if (!is_transition(&ev, &data->prev_ev) \|\|
	205	!geq_margin(ev.duration, RC6_TOGGLE_END, RC6_UNIT / 2))
	206	break;
784a4931	207
e40b1127 DH	208	if (!(data->header & RC6_STARTBIT_MASK)) {
	209	IR_dprintk(1, "RC6 invalid start bit\n");
	210	break;
	211	}
784a4931	212
e40b1127 DH	213	data->state = STATE_BODY_BIT_START;
	214	data->prev_ev = ev;
	215	decrease_duration(&ev, RC6_TOGGLE_END);
	216	data->count = 0;
	217
	218	switch (rc6_mode(data)) {
	219	case RC6_MODE_0:
	220	data->wanted_bits = RC6_0_NBITS;
	221	break;
	222	case RC6_MODE_6A:
	223	/* This might look weird, but we basically
	224	check the value of the first body bit to
	225	determine the number of bits in mode 6A */
	226	if ((!ev.pulse && !geq_margin(ev.duration, RC6_UNIT, RC6_UNIT / 2)) \|\|
	227	geq_margin(ev.duration, RC6_UNIT, RC6_UNIT / 2))
	228	data->wanted_bits = RC6_6A_LARGE_NBITS;
	229	else
	230	data->wanted_bits = RC6_6A_SMALL_NBITS;
	231	break;
	232	default:
	233	IR_dprintk(1, "RC6 unknown mode\n");
	234	goto out;
784a4931	235	}
e40b1127	236	goto again;
784a4931 DH	237
784a4931 DH	238	case STATE_BODY_BIT_START:
e40b1127 DH	239	if (!eq_margin(ev.duration, RC6_BIT_START, RC6_UNIT / 2))
e40b1127 DH	240	break;
784a4931	241
e40b1127 DH	242	data->body <<= 1;
	243	if (ev.pulse)
	244	data->body \|= 1;
	245	data->count++;
	246	data->prev_ev = ev;
	247
	248	data->state = STATE_BODY_BIT_END;
	249	return 0;
784a4931 DH	250
784a4931 DH	251	case STATE_BODY_BIT_END:
e40b1127 DH	252	if (!is_transition(&ev, &data->prev_ev))
e40b1127 DH	253	break;
784a4931	254
e40b1127 DH	255	if (data->count == data->wanted_bits)
	256	data->state = STATE_FINISHED;
	257	else
	258	data->state = STATE_BODY_BIT_START;
	259
	260	decrease_duration(&ev, RC6_BIT_END);
	261	goto again;
784a4931 DH	262
784a4931 DH	263	case STATE_FINISHED:
e40b1127 DH	264	if (ev.pulse)
	265	break;
	266
784a4931 DH	267	switch (rc6_mode(data)) {
	268	case RC6_MODE_0:
	269	scancode = data->body & 0xffff;
	270	toggle = data->toggle;
	271	IR_dprintk(1, "RC6(0) scancode 0x%04x (toggle: %u)\n",
	272	scancode, toggle);
	273	break;
	274	case RC6_MODE_6A:
	275	if (data->wanted_bits == RC6_6A_LARGE_NBITS) {
	276	toggle = data->body & RC6_6A_MCE_TOGGLE_MASK ? 1 : 0;
	277	scancode = data->body & ~RC6_6A_MCE_TOGGLE_MASK;
	278	} else {
	279	toggle = 0;
	280	scancode = data->body & 0xffffff;
	281	}
	282
	283	IR_dprintk(1, "RC6(6A) scancode 0x%08x (toggle: %u)\n",
	284	scancode, toggle);
	285	break;
	286	default:
	287	IR_dprintk(1, "RC6 unknown mode\n");
	288	goto out;
	289	}
	290
	291	ir_keydown(input_dev, scancode, toggle);
	292	data->state = STATE_INACTIVE;
	293	return 0;
	294	}
	295
	296	out:
e40b1127 DH	297	IR_dprintk(1, "RC6 decode failed at state %i (%uus %s)\n",
e40b1127 DH	298	data->state, TO_US(ev.duration), TO_STR(ev.pulse));
784a4931 DH	299	data->state = STATE_INACTIVE;
	300	return -EINVAL;
	301	}
	302
	303	static int ir_rc6_register(struct input_dev *input_dev)
	304	{
	305	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	306	struct decoder_data *data;
784a4931 DH	307
784a4931 DH	308	data = kzalloc(sizeof(*data), GFP_KERNEL);
667c9ebe	309	if (!data)
784a4931	310	return -ENOMEM;
784a4931 DH	311
784a4931 DH	312	data->ir_dev = ir_dev;
784a4931 DH	313
	314	spin_lock(&decoder_lock);
	315	list_add_tail(&data->list, &decoder_list);
	316	spin_unlock(&decoder_lock);
	317
	318	return 0;
	319	}
	320
	321	static int ir_rc6_unregister(struct input_dev *input_dev)
	322	{
	323	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	324	static struct decoder_data *data;
	325
	326	data = get_decoder_data(ir_dev);
	327	if (!data)
	328	return 0;
	329
784a4931 DH	330	spin_lock(&decoder_lock);
	331	list_del(&data->list);
	332	spin_unlock(&decoder_lock);
	333
	334	return 0;
	335	}
	336
	337	static struct ir_raw_handler rc6_handler = {
667c9ebe	338	.protocols = IR_TYPE_RC6,
784a4931 DH	339	.decode = ir_rc6_decode,
	340	.raw_register = ir_rc6_register,
	341	.raw_unregister = ir_rc6_unregister,
	342	};
	343
	344	static int __init ir_rc6_decode_init(void)
	345	{
	346	ir_raw_handler_register(&rc6_handler);
	347
	348	printk(KERN_INFO "IR RC6 protocol handler initialized\n");
	349	return 0;
	350	}
	351
	352	static void __exit ir_rc6_decode_exit(void)
	353	{
	354	ir_raw_handler_unregister(&rc6_handler);
	355	}
	356
	357	module_init(ir_rc6_decode_init);
	358	module_exit(ir_rc6_decode_exit);
	359
	360	MODULE_LICENSE("GPL");
	361	MODULE_AUTHOR("David Härdeman <david@hardeman.nu>");
	362	MODULE_DESCRIPTION("RC6 IR protocol decoder");