[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / common / ir-functions.c

/*
 *
 * some common structs and functions to handle infrared remotes via
 * input layer ...
 *
 * (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
 *
 *  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/string.h>
#include <linux/jiffies.h>
#include <media/ir-common.h>

/* -------------------------------------------------------------------------- */

MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
MODULE_LICENSE("GPL");

static int repeat = 1;
module_param(repeat, int, 0444);
MODULE_PARM_DESC(repeat,"auto-repeat for IR keys (default: on)");

static int debug;    /* debug level (0,1,2) */
module_param(debug, int, 0644);

#define dprintk(level, fmt, arg...)	if (debug >= level) \
	printk(KERN_DEBUG fmt , ## arg)

/* -------------------------------------------------------------------------- */

static void ir_input_key_event(struct input_dev *dev, struct ir_input_state *ir)
{
	if (KEY_RESERVED == ir->keycode) {
		printk(KERN_INFO "%s: unknown key: key=0x%02x raw=0x%02x down=%d\n",
		       dev->name,ir->ir_key,ir->ir_raw,ir->keypressed);
		return;
	}
	dprintk(1,"%s: key event code=%d down=%d\n",
		dev->name,ir->keycode,ir->keypressed);
	input_report_key(dev,ir->keycode,ir->keypressed);
	input_sync(dev);
}

/* -------------------------------------------------------------------------- */

void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
		   int ir_type, struct ir_scancode_table *ir_codes)
{
	int i;

	ir->ir_type = ir_type;

	memset(ir->ir_codes, 0, sizeof(ir->ir_codes));

	/*
	 * FIXME: This is a temporary workaround to use the new IR tables
	 * with the old approach. Later patches will replace this to a
	 * proper method
	 */

	if (ir_codes)
		for (i = 0; i < ir_codes->size; i++)
			if (ir_codes->scan[i].scancode < IR_KEYTAB_SIZE)
				ir->ir_codes[ir_codes->scan[i].scancode] = ir_codes->scan[i].keycode;

	dev->keycode     = ir->ir_codes;
	dev->keycodesize = sizeof(IR_KEYTAB_TYPE);
	dev->keycodemax  = IR_KEYTAB_SIZE;
	for (i = 0; i < IR_KEYTAB_SIZE; i++)
		set_bit(ir->ir_codes[i], dev->keybit);
	clear_bit(0, dev->keybit);

	set_bit(EV_KEY, dev->evbit);
	if (repeat)
		set_bit(EV_REP, dev->evbit);
}
EXPORT_SYMBOL_GPL(ir_input_init);

void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir)
{
	if (ir->keypressed) {
		ir->keypressed = 0;
		ir_input_key_event(dev,ir);
	}
}
EXPORT_SYMBOL_GPL(ir_input_nokey);

void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
		      u32 ir_key, u32 ir_raw)
{
	u32 keycode = IR_KEYCODE(ir->ir_codes, ir_key);

	if (ir->keypressed && ir->keycode != keycode) {
		ir->keypressed = 0;
		ir_input_key_event(dev,ir);
	}
	if (!ir->keypressed) {
		ir->ir_key  = ir_key;
		ir->ir_raw  = ir_raw;
		ir->keycode = keycode;
		ir->keypressed = 1;
		ir_input_key_event(dev,ir);
	}
}
EXPORT_SYMBOL_GPL(ir_input_keydown);

/* -------------------------------------------------------------------------- */
/* extract mask bits out of data and pack them into the result */
u32 ir_extract_bits(u32 data, u32 mask)
{
	u32 vbit = 1, value = 0;

	do {
	    if (mask&1) {
		if (data&1)
			value |= vbit;
		vbit<<=1;
	    }
	    data>>=1;
	} while (mask>>=1);

	return value;
}
EXPORT_SYMBOL_GPL(ir_extract_bits);

static int inline getbit(u32 *samples, int bit)
{
	return (samples[bit/32] & (1 << (31-(bit%32)))) ? 1 : 0;
}

/* sump raw samples for visual debugging ;) */
int ir_dump_samples(u32 *samples, int count)
{
	int i, bit, start;

	printk(KERN_DEBUG "ir samples: ");
	start = 0;
	for (i = 0; i < count * 32; i++) {
		bit = getbit(samples,i);
		if (bit)
			start = 1;
		if (0 == start)
			continue;
		printk("%s", bit ? "#" : "_");
	}
	printk("\n");
	return 0;
}
EXPORT_SYMBOL_GPL(ir_dump_samples);

/* decode raw samples, pulse distance coding used by NEC remotes */
int ir_decode_pulsedistance(u32 *samples, int count, int low, int high)
{
	int i,last,bit,len;
	u32 curBit;
	u32 value;

	/* find start burst */
	for (i = len = 0; i < count * 32; i++) {
		bit = getbit(samples,i);
		if (bit) {
			len++;
		} else {
			if (len >= 29)
				break;
			len = 0;
		}
	}

	/* start burst to short */
	if (len < 29)
		return 0xffffffff;

	/* find start silence */
	for (len = 0; i < count * 32; i++) {
		bit = getbit(samples,i);
		if (bit) {
			break;
		} else {
			len++;
		}
	}

	/* silence to short */
	if (len < 7)
		return 0xffffffff;

	/* go decoding */
	len   = 0;
	last = 1;
	value = 0; curBit = 1;
	for (; i < count * 32; i++) {
		bit  = getbit(samples,i);
		if (last) {
			if(bit) {
				continue;
			} else {
				len = 1;
			}
		} else {
			if (bit) {
				if (len > (low + high) /2)
					value |= curBit;
				curBit <<= 1;
				if (curBit == 1)
					break;
			} else {
				len++;
			}
		}
		last = bit;
	}

	return value;
}
EXPORT_SYMBOL_GPL(ir_decode_pulsedistance);

/* decode raw samples, biphase coding, used by rc5 for example */
int ir_decode_biphase(u32 *samples, int count, int low, int high)
{
	int i,last,bit,len,flips;
	u32 value;

	/* find start bit (1) */
	for (i = 0; i < 32; i++) {
		bit = getbit(samples,i);
		if (bit)
			break;
	}

	/* go decoding */
	len   = 0;
	flips = 0;
	value = 1;
	for (; i < count * 32; i++) {
		if (len > high)
			break;
		if (flips > 1)
			break;
		last = bit;
		bit  = getbit(samples,i);
		if (last == bit) {
			len++;
			continue;
		}
		if (len < low) {
			len++;
			flips++;
			continue;
		}
		value <<= 1;
		value |= bit;
		flips = 0;
		len   = 1;
	}
	return value;
}
EXPORT_SYMBOL_GPL(ir_decode_biphase);

/* RC5 decoding stuff, moved from bttv-input.c to share it with
 * saa7134 */

/* decode raw bit pattern to RC5 code */
static u32 ir_rc5_decode(unsigned int code)
{
	unsigned int org_code = code;
	unsigned int pair;
	unsigned int rc5 = 0;
	int i;

	for (i = 0; i < 14; ++i) {
		pair = code & 0x3;
		code >>= 2;

		rc5 <<= 1;
		switch (pair) {
		case 0:
		case 2:
			break;
		case 1:
			rc5 |= 1;
			break;
		case 3:
			dprintk(1, "ir-common: ir_rc5_decode(%x) bad code\n", org_code);
			return 0;
		}
	}
	dprintk(1, "ir-common: code=%x, rc5=%x, start=%x, toggle=%x, address=%x, "
		"instr=%x\n", rc5, org_code, RC5_START(rc5),
		RC5_TOGGLE(rc5), RC5_ADDR(rc5), RC5_INSTR(rc5));
	return rc5;
}

void ir_rc5_timer_end(unsigned long data)
{
	struct card_ir *ir = (struct card_ir *)data;
	struct timeval tv;
	unsigned long current_jiffies, timeout;
	u32 gap;
	u32 rc5 = 0;

	/* get time */
	current_jiffies = jiffies;
	do_gettimeofday(&tv);

	/* avoid overflow with gap >1s */
	if (tv.tv_sec - ir->base_time.tv_sec > 1) {
		gap = 200000;
	} else {
		gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
		    tv.tv_usec - ir->base_time.tv_usec;
	}

	/* signal we're ready to start a new code */
	ir->active = 0;

	/* Allow some timer jitter (RC5 is ~24ms anyway so this is ok) */
	if (gap < 28000) {
		dprintk(1, "ir-common: spurious timer_end\n");
		return;
	}

	if (ir->last_bit < 20) {
		/* ignore spurious codes (caused by light/other remotes) */
		dprintk(1, "ir-common: short code: %x\n", ir->code);
	} else {
		ir->code = (ir->code << ir->shift_by) | 1;
		rc5 = ir_rc5_decode(ir->code);

		/* two start bits? */
		if (RC5_START(rc5) != ir->start) {
			dprintk(1, "ir-common: rc5 start bits invalid: %u\n", RC5_START(rc5));

			/* right address? */
		} else if (RC5_ADDR(rc5) == ir->addr) {
			u32 toggle = RC5_TOGGLE(rc5);
			u32 instr = RC5_INSTR(rc5);

			/* Good code, decide if repeat/repress */
			if (toggle != RC5_TOGGLE(ir->last_rc5) ||
			    instr != RC5_INSTR(ir->last_rc5)) {
				dprintk(1, "ir-common: instruction %x, toggle %x\n", instr,
					toggle);
				ir_input_nokey(ir->dev, &ir->ir);
				ir_input_keydown(ir->dev, &ir->ir, instr,
						 instr);
			}

			/* Set/reset key-up timer */
			timeout = current_jiffies +
				  msecs_to_jiffies(ir->rc5_key_timeout);
			mod_timer(&ir->timer_keyup, timeout);

			/* Save code for repeat test */
			ir->last_rc5 = rc5;
		}
	}
}
EXPORT_SYMBOL_GPL(ir_rc5_timer_end);

void ir_rc5_timer_keyup(unsigned long data)
{
	struct card_ir *ir = (struct card_ir *)data;

	dprintk(1, "ir-common: key released\n");
	ir_input_nokey(ir->dev, &ir->ir);
}
EXPORT_SYMBOL_GPL(ir_rc5_timer_keyup);
Commit	Line	Data
d15549ac RC	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/module.h>
d15549ac	24	#include <linux/string.h>
0b778a56	25	#include <linux/jiffies.h>
d15549ac RC	26	#include <media/ir-common.h>
	27
	28	/* -------------------------------------------------------------------------- */
	29
	30	MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
	31	MODULE_LICENSE("GPL");
	32
	33	static int repeat = 1;
	34	module_param(repeat, int, 0444);
	35	MODULE_PARM_DESC(repeat,"auto-repeat for IR keys (default: on)");
	36
ff699e6b	37	static int debug; /* debug level (0,1,2) */
d15549ac RC	38	module_param(debug, int, 0644);
	39
	40	#define dprintk(level, fmt, arg...) if (debug >= level) \
	41	printk(KERN_DEBUG fmt , ## arg)
	42
	43	/* -------------------------------------------------------------------------- */
	44
	45	static void ir_input_key_event(struct input_dev dev, struct ir_input_state ir)
	46	{
	47	if (KEY_RESERVED == ir->keycode) {
	48	printk(KERN_INFO "%s: unknown key: key=0x%02x raw=0x%02x down=%d\n",
	49	dev->name,ir->ir_key,ir->ir_raw,ir->keypressed);
	50	return;
	51	}
	52	dprintk(1,"%s: key event code=%d down=%d\n",
	53	dev->name,ir->keycode,ir->keypressed);
	54	input_report_key(dev,ir->keycode,ir->keypressed);
	55	input_sync(dev);
	56	}
	57
	58	/* -------------------------------------------------------------------------- */
	59
	60	void ir_input_init(struct input_dev dev, struct ir_input_state ir,
715a2233	61	int ir_type, struct ir_scancode_table *ir_codes)
d15549ac RC	62	{
	63	int i;
	64
	65	ir->ir_type = ir_type;
715a2233	66
361c9511	67	memset(ir->ir_codes, 0, sizeof(ir->ir_codes));
715a2233 MCC	68
	69	/*
	70	* FIXME: This is a temporary workaround to use the new IR tables
	71	* with the old approach. Later patches will replace this to a
	72	* proper method
	73	*/
	74
d15549ac	75	if (ir_codes)
715a2233 MCC	76	for (i = 0; i < ir_codes->size; i++)
	77	if (ir_codes->scan[i].scancode < IR_KEYTAB_SIZE)
	78	ir->ir_codes[ir_codes->scan[i].scancode] = ir_codes->scan[i].keycode;
d15549ac	79
d15549ac RC	80	dev->keycode = ir->ir_codes;
	81	dev->keycodesize = sizeof(IR_KEYTAB_TYPE);
	82	dev->keycodemax = IR_KEYTAB_SIZE;
	83	for (i = 0; i < IR_KEYTAB_SIZE; i++)
	84	set_bit(ir->ir_codes[i], dev->keybit);
	85	clear_bit(0, dev->keybit);
	86
	87	set_bit(EV_KEY, dev->evbit);
	88	if (repeat)
	89	set_bit(EV_REP, dev->evbit);
	90	}
4db16db4	91	EXPORT_SYMBOL_GPL(ir_input_init);
d15549ac RC	92
	93	void ir_input_nokey(struct input_dev dev, struct ir_input_state ir)
	94	{
	95	if (ir->keypressed) {
	96	ir->keypressed = 0;
	97	ir_input_key_event(dev,ir);
	98	}
	99	}
4db16db4	100	EXPORT_SYMBOL_GPL(ir_input_nokey);
d15549ac RC	101
	102	void ir_input_keydown(struct input_dev dev, struct ir_input_state ir,
	103	u32 ir_key, u32 ir_raw)
	104	{
	105	u32 keycode = IR_KEYCODE(ir->ir_codes, ir_key);
	106
	107	if (ir->keypressed && ir->keycode != keycode) {
	108	ir->keypressed = 0;
	109	ir_input_key_event(dev,ir);
	110	}
	111	if (!ir->keypressed) {
	112	ir->ir_key = ir_key;
	113	ir->ir_raw = ir_raw;
	114	ir->keycode = keycode;
	115	ir->keypressed = 1;
	116	ir_input_key_event(dev,ir);
	117	}
	118	}
4db16db4	119	EXPORT_SYMBOL_GPL(ir_input_keydown);
d15549ac RC	120
d15549ac RC	121	/* -------------------------------------------------------------------------- */
d67be61e	122	/* extract mask bits out of data and pack them into the result */
d15549ac RC	123	u32 ir_extract_bits(u32 data, u32 mask)
d15549ac RC	124	{
d67be61e TP	125	u32 vbit = 1, value = 0;
	126
	127	do {
	128	if (mask&1) {
	129	if (data&1)
	130	value \|= vbit;
	131	vbit<<=1;
	132	}
	133	data>>=1;
	134	} while (mask>>=1);
	135
d15549ac RC	136	return value;
d15549ac RC	137	}
4db16db4	138	EXPORT_SYMBOL_GPL(ir_extract_bits);
d15549ac RC	139
	140	static int inline getbit(u32 *samples, int bit)
	141	{
	142	return (samples[bit/32] & (1 << (31-(bit%32)))) ? 1 : 0;
	143	}
	144
	145	/* sump raw samples for visual debugging ;) */
	146	int ir_dump_samples(u32 *samples, int count)
	147	{
	148	int i, bit, start;
	149
	150	printk(KERN_DEBUG "ir samples: ");
	151	start = 0;
	152	for (i = 0; i < count * 32; i++) {
	153	bit = getbit(samples,i);
	154	if (bit)
	155	start = 1;
	156	if (0 == start)
	157	continue;
	158	printk("%s", bit ? "#" : "_");
	159	}
	160	printk("\n");
	161	return 0;
	162	}
4db16db4	163	EXPORT_SYMBOL_GPL(ir_dump_samples);
d15549ac RC	164
	165	/* decode raw samples, pulse distance coding used by NEC remotes */
	166	int ir_decode_pulsedistance(u32 *samples, int count, int low, int high)
	167	{
	168	int i,last,bit,len;
	169	u32 curBit;
	170	u32 value;
	171
	172	/* find start burst */
	173	for (i = len = 0; i < count * 32; i++) {
	174	bit = getbit(samples,i);
	175	if (bit) {
	176	len++;
	177	} else {
	178	if (len >= 29)
	179	break;
	180	len = 0;
	181	}
	182	}
	183
	184	/* start burst to short */
	185	if (len < 29)
	186	return 0xffffffff;
	187
	188	/* find start silence */
	189	for (len = 0; i < count * 32; i++) {
	190	bit = getbit(samples,i);
	191	if (bit) {
	192	break;
	193	} else {
	194	len++;
	195	}
	196	}
	197
	198	/* silence to short */
	199	if (len < 7)
	200	return 0xffffffff;
	201
	202	/* go decoding */
	203	len = 0;
	204	last = 1;
	205	value = 0; curBit = 1;
	206	for (; i < count * 32; i++) {
	207	bit = getbit(samples,i);
	208	if (last) {
	209	if(bit) {
	210	continue;
	211	} else {
	212	len = 1;
	213	}
	214	} else {
	215	if (bit) {
	216	if (len > (low + high) /2)
	217	value \|= curBit;
	218	curBit <<= 1;
	219	if (curBit == 1)
	220	break;
	221	} else {
	222	len++;
	223	}
	224	}
	225	last = bit;
	226	}
	227
228	return value;
229	}
4db16db4	230	EXPORT_SYMBOL_GPL(ir_decode_pulsedistance);
d15549ac RC	231
	232	/* decode raw samples, biphase coding, used by rc5 for example */
	233	int ir_decode_biphase(u32 *samples, int count, int low, int high)
	234	{
	235	int i,last,bit,len,flips;
	236	u32 value;
	237
	238	/* find start bit (1) */
	239	for (i = 0; i < 32; i++) {
	240	bit = getbit(samples,i);
	241	if (bit)
	242	break;
	243	}
	244
	245	/* go decoding */
	246	len = 0;
	247	flips = 0;
	248	value = 1;
	249	for (; i < count * 32; i++) {
	250	if (len > high)
	251	break;
	252	if (flips > 1)
	253	break;
	254	last = bit;
	255	bit = getbit(samples,i);
	256	if (last == bit) {
	257	len++;
	258	continue;
	259	}
	260	if (len < low) {
	261	len++;
	262	flips++;
	263	continue;
	264	}
	265	value <<= 1;
	266	value \|= bit;
	267	flips = 0;
	268	len = 1;
	269	}
	270	return value;
	271	}
4db16db4	272	EXPORT_SYMBOL_GPL(ir_decode_biphase);
d15549ac	273
9160723e HP	274	/* RC5 decoding stuff, moved from bttv-input.c to share it with
	275	* saa7134 */
	276
	277	/* decode raw bit pattern to RC5 code */
9695a498	278	static u32 ir_rc5_decode(unsigned int code)
9160723e HP	279	{
	280	unsigned int org_code = code;
	281	unsigned int pair;
	282	unsigned int rc5 = 0;
	283	int i;
	284
	285	for (i = 0; i < 14; ++i) {
	286	pair = code & 0x3;
	287	code >>= 2;
	288
	289	rc5 <<= 1;
	290	switch (pair) {
	291	case 0:
	292	case 2:
	293	break;
	294	case 1:
	295	rc5 \|= 1;
	296	break;
	297	case 3:
	298	dprintk(1, "ir-common: ir_rc5_decode(%x) bad code\n", org_code);
	299	return 0;
	300	}
	301	}
	302	dprintk(1, "ir-common: code=%x, rc5=%x, start=%x, toggle=%x, address=%x, "
	303	"instr=%x\n", rc5, org_code, RC5_START(rc5),
	304	RC5_TOGGLE(rc5), RC5_ADDR(rc5), RC5_INSTR(rc5));
	305	return rc5;
	306	}
	307
	308	void ir_rc5_timer_end(unsigned long data)
	309	{
	310	struct card_ir ir = (struct card_ir )data;
	311	struct timeval tv;
	312	unsigned long current_jiffies, timeout;
	313	u32 gap;
	314	u32 rc5 = 0;
	315
	316	/* get time */
	317	current_jiffies = jiffies;
	318	do_gettimeofday(&tv);
	319
	320	/* avoid overflow with gap >1s */
	321	if (tv.tv_sec - ir->base_time.tv_sec > 1) {
	322	gap = 200000;
	323	} else {
	324	gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
	325	tv.tv_usec - ir->base_time.tv_usec;
	326	}
	327
726cf56f VP	328	/* signal we're ready to start a new code */
	329	ir->active = 0;
	330
	331	/* Allow some timer jitter (RC5 is ~24ms anyway so this is ok) */
9160723e HP	332	if (gap < 28000) {
	333	dprintk(1, "ir-common: spurious timer_end\n");
	334	return;
	335	}
	336
9160723e HP	337	if (ir->last_bit < 20) {
	338	/* ignore spurious codes (caused by light/other remotes) */
	339	dprintk(1, "ir-common: short code: %x\n", ir->code);
	340	} else {
	341	ir->code = (ir->code << ir->shift_by) \| 1;
	342	rc5 = ir_rc5_decode(ir->code);
	343
	344	/* two start bits? */
	345	if (RC5_START(rc5) != ir->start) {
	346	dprintk(1, "ir-common: rc5 start bits invalid: %u\n", RC5_START(rc5));
	347
	348	/* right address? */
	349	} else if (RC5_ADDR(rc5) == ir->addr) {
	350	u32 toggle = RC5_TOGGLE(rc5);
	351	u32 instr = RC5_INSTR(rc5);
	352
	353	/* Good code, decide if repeat/repress */
	354	if (toggle != RC5_TOGGLE(ir->last_rc5) \|\|
	355	instr != RC5_INSTR(ir->last_rc5)) {
	356	dprintk(1, "ir-common: instruction %x, toggle %x\n", instr,
	357	toggle);
	358	ir_input_nokey(ir->dev, &ir->ir);
	359	ir_input_keydown(ir->dev, &ir->ir, instr,
	360	instr);
	361	}
	362
	363	/* Set/reset key-up timer */
f7518bd2 MCC	364	timeout = current_jiffies +
f7518bd2 MCC	365	msecs_to_jiffies(ir->rc5_key_timeout);
9160723e HP	366	mod_timer(&ir->timer_keyup, timeout);
	367
	368	/* Save code for repeat test */
	369	ir->last_rc5 = rc5;
	370	}
	371	}
	372	}
4db16db4	373	EXPORT_SYMBOL_GPL(ir_rc5_timer_end);
9160723e HP	374
	375	void ir_rc5_timer_keyup(unsigned long data)
	376	{
	377	struct card_ir ir = (struct card_ir )data;
	378
	379	dprintk(1, "ir-common: key released\n");
	380	ir_input_nokey(ir->dev, &ir->ir);
	381	}
9160723e	382	EXPORT_SYMBOL_GPL(ir_rc5_timer_keyup);