[deliverable/linux.git] / drivers / media / rc / ir-lirc-codec.c

/* ir-lirc-codec.c - ir-core to classic lirc interface bridge
 *
 * Copyright (C) 2010 by Jarod Wilson <jarod@redhat.com>
 *
 * 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 <linux/sched.h>
#include <linux/wait.h>
#include <media/lirc.h>
#include <media/lirc_dev.h>
#include <media/ir-core.h>
#include "rc-core-priv.h"

#define LIRCBUF_SIZE 256

/**
 * ir_lirc_decode() - Send raw IR data to lirc_dev to be relayed to the
 *		      lircd userspace daemon for decoding.
 * @input_dev:	the struct input_dev descriptor of the device
 * @duration:	the struct ir_raw_event descriptor of the pulse/space
 *
 * This function returns -EINVAL if the lirc interfaces aren't wired up.
 */
static int ir_lirc_decode(struct input_dev *input_dev, struct ir_raw_event ev)
{
	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	struct lirc_codec *lirc = &ir_dev->raw->lirc;
	int sample;

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

	if (!ir_dev->raw->lirc.drv || !ir_dev->raw->lirc.drv->rbuf)
		return -EINVAL;

	/* Packet start */
	if (ev.reset)
		return 0;

	/* Carrier reports */
	if (ev.carrier_report) {
		sample = LIRC_FREQUENCY(ev.carrier);

	/* Packet end */
	} else if (ev.timeout) {

		if (lirc->gap)
			return 0;

		lirc->gap_start = ktime_get();
		lirc->gap = true;
		lirc->gap_duration = ev.duration;

		if (!lirc->send_timeout_reports)
			return 0;

		sample = LIRC_TIMEOUT(ev.duration / 1000);

	/* Normal sample */
	} else {

		if (lirc->gap) {
			int gap_sample;

			lirc->gap_duration += ktime_to_ns(ktime_sub(ktime_get(),
				lirc->gap_start));

			/* Convert to ms and cap by LIRC_VALUE_MASK */
			do_div(lirc->gap_duration, 1000);
			lirc->gap_duration = min(lirc->gap_duration,
							(u64)LIRC_VALUE_MASK);

			gap_sample = LIRC_SPACE(lirc->gap_duration);
			lirc_buffer_write(ir_dev->raw->lirc.drv->rbuf,
						(unsigned char *) &gap_sample);
			lirc->gap = false;
		}

		sample = ev.pulse ? LIRC_PULSE(ev.duration / 1000) :
					LIRC_SPACE(ev.duration / 1000);
	}

	lirc_buffer_write(ir_dev->raw->lirc.drv->rbuf,
			  (unsigned char *) &sample);
	wake_up(&ir_dev->raw->lirc.drv->rbuf->wait_poll);

	return 0;
}

static ssize_t ir_lirc_transmit_ir(struct file *file, const char *buf,
				   size_t n, loff_t *ppos)
{
	struct lirc_codec *lirc;
	struct ir_input_dev *ir_dev;
	int *txbuf; /* buffer with values to transmit */
	int ret = 0, count;

	lirc = lirc_get_pdata(file);
	if (!lirc)
		return -EFAULT;

	if (n % sizeof(int))
		return -EINVAL;

	count = n / sizeof(int);
	if (count > LIRCBUF_SIZE || count % 2 == 0)
		return -EINVAL;

	txbuf = memdup_user(buf, n);
	if (IS_ERR(txbuf))
		return PTR_ERR(txbuf);

	ir_dev = lirc->ir_dev;
	if (!ir_dev) {
		ret = -EFAULT;
		goto out;
	}

	if (ir_dev->props && ir_dev->props->tx_ir)
		ret = ir_dev->props->tx_ir(ir_dev->props->priv, txbuf, (u32)n);

out:
	kfree(txbuf);
	return ret;
}

static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
			unsigned long __user arg)
{
	struct lirc_codec *lirc;
	struct ir_input_dev *ir_dev;
	int ret = 0;
	void *drv_data;
	__u32 val = 0, tmp;

	lirc = lirc_get_pdata(filep);
	if (!lirc)
		return -EFAULT;

	ir_dev = lirc->ir_dev;
	if (!ir_dev || !ir_dev->props || !ir_dev->props->priv)
		return -EFAULT;

	drv_data = ir_dev->props->priv;

	if (_IOC_DIR(cmd) & _IOC_WRITE) {
		ret = get_user(val, (__u32 *)arg);
		if (ret)
			return ret;
	}

	switch (cmd) {

	/* legacy support */
	case LIRC_GET_SEND_MODE:
		val = LIRC_CAN_SEND_PULSE & LIRC_CAN_SEND_MASK;
		break;

	case LIRC_SET_SEND_MODE:
		if (val != (LIRC_MODE_PULSE & LIRC_CAN_SEND_MASK))
			return -EINVAL;
		return 0;

	/* TX settings */
	case LIRC_SET_TRANSMITTER_MASK:
		if (!ir_dev->props->s_tx_mask)
			return -EINVAL;

		return ir_dev->props->s_tx_mask(drv_data, val);

	case LIRC_SET_SEND_CARRIER:
		if (!ir_dev->props->s_tx_carrier)
			return -EINVAL;

		return ir_dev->props->s_tx_carrier(drv_data, val);

	case LIRC_SET_SEND_DUTY_CYCLE:
		if (!ir_dev->props->s_tx_duty_cycle)
			return -ENOSYS;

		if (val <= 0 || val >= 100)
			return -EINVAL;

		return ir_dev->props->s_tx_duty_cycle(drv_data, val);

	/* RX settings */
	case LIRC_SET_REC_CARRIER:
		if (!ir_dev->props->s_rx_carrier_range)
			return -ENOSYS;

		if (val <= 0)
			return -EINVAL;

		return ir_dev->props->s_rx_carrier_range(drv_data,
			ir_dev->raw->lirc.carrier_low, val);

	case LIRC_SET_REC_CARRIER_RANGE:
		if (val <= 0)
			return -EINVAL;

		ir_dev->raw->lirc.carrier_low = val;
		return 0;

	case LIRC_GET_REC_RESOLUTION:
		val = ir_dev->props->rx_resolution;
		break;

	case LIRC_SET_WIDEBAND_RECEIVER:
		if (!ir_dev->props->s_learning_mode)
			return -ENOSYS;

		return ir_dev->props->s_learning_mode(drv_data, !!val);

	case LIRC_SET_MEASURE_CARRIER_MODE:
		if (!ir_dev->props->s_carrier_report)
			return -ENOSYS;

		return ir_dev->props->s_carrier_report(drv_data, !!val);

	/* Generic timeout support */
	case LIRC_GET_MIN_TIMEOUT:
		if (!ir_dev->props->max_timeout)
			return -ENOSYS;
		val = ir_dev->props->min_timeout / 1000;
		break;

	case LIRC_GET_MAX_TIMEOUT:
		if (!ir_dev->props->max_timeout)
			return -ENOSYS;
		val = ir_dev->props->max_timeout / 1000;
		break;

	case LIRC_SET_REC_TIMEOUT:
		if (!ir_dev->props->max_timeout)
			return -ENOSYS;

		tmp = val * 1000;

		if (tmp < ir_dev->props->min_timeout ||
			tmp > ir_dev->props->max_timeout)
				return -EINVAL;

		ir_dev->props->timeout = tmp;
		break;

	case LIRC_SET_REC_TIMEOUT_REPORTS:
		lirc->send_timeout_reports = !!val;
		break;

	default:
		return lirc_dev_fop_ioctl(filep, cmd, arg);
	}

	if (_IOC_DIR(cmd) & _IOC_READ)
		ret = put_user(val, (__u32 *)arg);

	return ret;
}

static int ir_lirc_open(void *data)
{
	return 0;
}

static void ir_lirc_close(void *data)
{
	return;
}

static struct file_operations lirc_fops = {
	.owner		= THIS_MODULE,
	.write		= ir_lirc_transmit_ir,
	.unlocked_ioctl	= ir_lirc_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= ir_lirc_ioctl,
#endif
	.read		= lirc_dev_fop_read,
	.poll		= lirc_dev_fop_poll,
	.open		= lirc_dev_fop_open,
	.release	= lirc_dev_fop_close,
	.llseek		= no_llseek,
};

static int ir_lirc_register(struct input_dev *input_dev)
{
	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	struct lirc_driver *drv;
	struct lirc_buffer *rbuf;
	int rc = -ENOMEM;
	unsigned long features;

	drv = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
	if (!drv)
		return rc;

	rbuf = kzalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
	if (!rbuf)
		goto rbuf_alloc_failed;

	rc = lirc_buffer_init(rbuf, sizeof(int), LIRCBUF_SIZE);
	if (rc)
		goto rbuf_init_failed;

	features = LIRC_CAN_REC_MODE2;
	if (ir_dev->props->tx_ir) {

		features |= LIRC_CAN_SEND_PULSE;
		if (ir_dev->props->s_tx_mask)
			features |= LIRC_CAN_SET_TRANSMITTER_MASK;
		if (ir_dev->props->s_tx_carrier)
			features |= LIRC_CAN_SET_SEND_CARRIER;

		if (ir_dev->props->s_tx_duty_cycle)
			features |= LIRC_CAN_SET_SEND_DUTY_CYCLE;
	}

	if (ir_dev->props->s_rx_carrier_range)
		features |= LIRC_CAN_SET_REC_CARRIER |
			LIRC_CAN_SET_REC_CARRIER_RANGE;

	if (ir_dev->props->s_learning_mode)
		features |= LIRC_CAN_USE_WIDEBAND_RECEIVER;

	if (ir_dev->props->s_carrier_report)
		features |= LIRC_CAN_MEASURE_CARRIER;


	if (ir_dev->props->max_timeout)
		features |= LIRC_CAN_SET_REC_TIMEOUT;


	snprintf(drv->name, sizeof(drv->name), "ir-lirc-codec (%s)",
		 ir_dev->driver_name);
	drv->minor = -1;
	drv->features = features;
	drv->data = &ir_dev->raw->lirc;
	drv->rbuf = rbuf;
	drv->set_use_inc = &ir_lirc_open;
	drv->set_use_dec = &ir_lirc_close;
	drv->code_length = sizeof(struct ir_raw_event) * 8;
	drv->fops = &lirc_fops;
	drv->dev = &ir_dev->dev;
	drv->owner = THIS_MODULE;

	drv->minor = lirc_register_driver(drv);
	if (drv->minor < 0) {
		rc = -ENODEV;
		goto lirc_register_failed;
	}

	ir_dev->raw->lirc.drv = drv;
	ir_dev->raw->lirc.ir_dev = ir_dev;
	return 0;

lirc_register_failed:
rbuf_init_failed:
	kfree(rbuf);
rbuf_alloc_failed:
	kfree(drv);

	return rc;
}

static int ir_lirc_unregister(struct input_dev *input_dev)
{
	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	struct lirc_codec *lirc = &ir_dev->raw->lirc;

	lirc_unregister_driver(lirc->drv->minor);
	lirc_buffer_free(lirc->drv->rbuf);
	kfree(lirc->drv);

	return 0;
}

static struct ir_raw_handler lirc_handler = {
	.protocols	= IR_TYPE_LIRC,
	.decode		= ir_lirc_decode,
	.raw_register	= ir_lirc_register,
	.raw_unregister	= ir_lirc_unregister,
};

static int __init ir_lirc_codec_init(void)
{
	ir_raw_handler_register(&lirc_handler);

	printk(KERN_INFO "IR LIRC bridge handler initialized\n");
	return 0;
}

static void __exit ir_lirc_codec_exit(void)
{
	ir_raw_handler_unregister(&lirc_handler);
}

module_init(ir_lirc_codec_init);
module_exit(ir_lirc_codec_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
MODULE_DESCRIPTION("LIRC IR handler bridge");
Commit	Line	Data
ca414698 JW	1	/* ir-lirc-codec.c - ir-core to classic lirc interface bridge
	2	*
	3	* Copyright (C) 2010 by Jarod Wilson <jarod@redhat.com>
	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 <linux/sched.h>
	16	#include <linux/wait.h>
	17	#include <media/lirc.h>
5690085e	18	#include <media/lirc_dev.h>
ca414698	19	#include <media/ir-core.h>
f62de675	20	#include "rc-core-priv.h"
ca414698 JW	21
	22	#define LIRCBUF_SIZE 256
	23
	24	/**
	25	* ir_lirc_decode() - Send raw IR data to lirc_dev to be relayed to the
	26	* lircd userspace daemon for decoding.
	27	* @input_dev: the struct input_dev descriptor of the device
	28	* @duration: the struct ir_raw_event descriptor of the pulse/space
	29	*
	30	* This function returns -EINVAL if the lirc interfaces aren't wired up.
	31	*/
	32	static int ir_lirc_decode(struct input_dev *input_dev, struct ir_raw_event ev)
	33	{
	34	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
4651918a	35	struct lirc_codec *lirc = &ir_dev->raw->lirc;
510fcb70	36	int sample;
ca414698 JW	37
	38	if (!(ir_dev->raw->enabled_protocols & IR_TYPE_LIRC))
	39	return 0;
	40
	41	if (!ir_dev->raw->lirc.drv \|\| !ir_dev->raw->lirc.drv->rbuf)
	42	return -EINVAL;
	43
4651918a ML	44	/* Packet start */
4651918a ML	45	if (ev.reset)
510fcb70 ML	46	return 0;
510fcb70 ML	47
4651918a ML	48	/* Carrier reports */
	49	if (ev.carrier_report) {
	50	sample = LIRC_FREQUENCY(ev.carrier);
ca414698	51
4651918a ML	52	/* Packet end */
	53	} else if (ev.timeout) {
	54
	55	if (lirc->gap)
	56	return 0;
	57
	58	lirc->gap_start = ktime_get();
	59	lirc->gap = true;
	60	lirc->gap_duration = ev.duration;
	61
	62	if (!lirc->send_timeout_reports)
	63	return 0;
	64
	65	sample = LIRC_TIMEOUT(ev.duration / 1000);
	66
	67	/* Normal sample */
	68	} else {
	69
	70	if (lirc->gap) {
	71	int gap_sample;
	72
	73	lirc->gap_duration += ktime_to_ns(ktime_sub(ktime_get(),
	74	lirc->gap_start));
	75
	76	/* Convert to ms and cap by LIRC_VALUE_MASK */
	77	do_div(lirc->gap_duration, 1000);
	78	lirc->gap_duration = min(lirc->gap_duration,
	79	(u64)LIRC_VALUE_MASK);
	80
	81	gap_sample = LIRC_SPACE(lirc->gap_duration);
	82	lirc_buffer_write(ir_dev->raw->lirc.drv->rbuf,
	83	(unsigned char *) &gap_sample);
	84	lirc->gap = false;
	85	}
	86
	87	sample = ev.pulse ? LIRC_PULSE(ev.duration / 1000) :
	88	LIRC_SPACE(ev.duration / 1000);
	89	}
ca414698 JW	90
ca414698 JW	91	lirc_buffer_write(ir_dev->raw->lirc.drv->rbuf,
510fcb70	92	(unsigned char *) &sample);
ca414698 JW	93	wake_up(&ir_dev->raw->lirc.drv->rbuf->wait_poll);
ca414698 JW	94
ca414698 JW	95	return 0;
	96	}
	97
	98	static ssize_t ir_lirc_transmit_ir(struct file file, const char buf,
	99	size_t n, loff_t *ppos)
	100	{
	101	struct lirc_codec *lirc;
	102	struct ir_input_dev *ir_dev;
	103	int txbuf; / buffer with values to transmit */
	104	int ret = 0, count;
	105
	106	lirc = lirc_get_pdata(file);
	107	if (!lirc)
	108	return -EFAULT;
	109
	110	if (n % sizeof(int))
	111	return -EINVAL;
	112
	113	count = n / sizeof(int);
	114	if (count > LIRCBUF_SIZE \|\| count % 2 == 0)
	115	return -EINVAL;
	116
6efb870a JW	117	txbuf = memdup_user(buf, n);
	118	if (IS_ERR(txbuf))
	119	return PTR_ERR(txbuf);
ca414698 JW	120
	121	ir_dev = lirc->ir_dev;
	122	if (!ir_dev) {
	123	ret = -EFAULT;
	124	goto out;
	125	}
	126
	127	if (ir_dev->props && ir_dev->props->tx_ir)
	128	ret = ir_dev->props->tx_ir(ir_dev->props->priv, txbuf, (u32)n);
	129
	130	out:
	131	kfree(txbuf);
	132	return ret;
	133	}
	134
e589333f ML	135	static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
e589333f ML	136	unsigned long __user arg)
ca414698 JW	137	{
	138	struct lirc_codec *lirc;
	139	struct ir_input_dev *ir_dev;
	140	int ret = 0;
	141	void *drv_data;
4651918a	142	__u32 val = 0, tmp;
ca414698 JW	143
	144	lirc = lirc_get_pdata(filep);
	145	if (!lirc)
	146	return -EFAULT;
	147
	148	ir_dev = lirc->ir_dev;
	149	if (!ir_dev \|\| !ir_dev->props \|\| !ir_dev->props->priv)
	150	return -EFAULT;
	151
	152	drv_data = ir_dev->props->priv;
	153
e589333f	154	if (_IOC_DIR(cmd) & _IOC_WRITE) {
be1f985f	155	ret = get_user(val, (__u32 *)arg);
ca414698 JW	156	if (ret)
ca414698 JW	157	return ret;
e589333f ML	158	}
	159
	160	switch (cmd) {
	161
	162	/* legacy support */
	163	case LIRC_GET_SEND_MODE:
	164	val = LIRC_CAN_SEND_PULSE & LIRC_CAN_SEND_MASK;
	165	break;
	166
	167	case LIRC_SET_SEND_MODE:
	168	if (val != (LIRC_MODE_PULSE & LIRC_CAN_SEND_MASK))
	169	return -EINVAL;
4651918a	170	return 0;
ca414698	171
e589333f ML	172	/* TX settings */
e589333f ML	173	case LIRC_SET_TRANSMITTER_MASK:
4651918a	174	if (!ir_dev->props->s_tx_mask)
ca414698	175	return -EINVAL;
4651918a ML	176
4651918a ML	177	return ir_dev->props->s_tx_mask(drv_data, val);
ca414698 JW	178
ca414698 JW	179	case LIRC_SET_SEND_CARRIER:
4651918a	180	if (!ir_dev->props->s_tx_carrier)
ca414698	181	return -EINVAL;
4651918a ML	182
4651918a ML	183	return ir_dev->props->s_tx_carrier(drv_data, val);
ca414698	184
e589333f ML	185	case LIRC_SET_SEND_DUTY_CYCLE:
	186	if (!ir_dev->props->s_tx_duty_cycle)
	187	return -ENOSYS;
	188
	189	if (val <= 0 \|\| val >= 100)
	190	return -EINVAL;
	191
4651918a	192	return ir_dev->props->s_tx_duty_cycle(drv_data, val);
ca414698	193
e589333f ML	194	/* RX settings */
e589333f ML	195	case LIRC_SET_REC_CARRIER:
4651918a	196	if (!ir_dev->props->s_rx_carrier_range)
e589333f	197	return -ENOSYS;
ca414698	198
4651918a ML	199	if (val <= 0)
	200	return -EINVAL;
	201
	202	return ir_dev->props->s_rx_carrier_range(drv_data,
	203	ir_dev->raw->lirc.carrier_low, val);
e589333f ML	204
e589333f ML	205	case LIRC_SET_REC_CARRIER_RANGE:
4651918a ML	206	if (val <= 0)
4651918a ML	207	return -EINVAL;
e589333f	208
4651918a ML	209	ir_dev->raw->lirc.carrier_low = val;
4651918a ML	210	return 0;
e589333f ML	211
	212	case LIRC_GET_REC_RESOLUTION:
	213	val = ir_dev->props->rx_resolution;
	214	break;
	215
	216	case LIRC_SET_WIDEBAND_RECEIVER:
4651918a	217	if (!ir_dev->props->s_learning_mode)
e589333f ML	218	return -ENOSYS;
e589333f ML	219
4651918a ML	220	return ir_dev->props->s_learning_mode(drv_data, !!val);
	221
	222	case LIRC_SET_MEASURE_CARRIER_MODE:
	223	if (!ir_dev->props->s_carrier_report)
	224	return -ENOSYS;
	225
	226	return ir_dev->props->s_carrier_report(drv_data, !!val);
	227
e589333f ML	228	/* Generic timeout support */
	229	case LIRC_GET_MIN_TIMEOUT:
	230	if (!ir_dev->props->max_timeout)
	231	return -ENOSYS;
	232	val = ir_dev->props->min_timeout / 1000;
	233	break;
	234
	235	case LIRC_GET_MAX_TIMEOUT:
	236	if (!ir_dev->props->max_timeout)
	237	return -ENOSYS;
	238	val = ir_dev->props->max_timeout / 1000;
	239	break;
	240
	241	case LIRC_SET_REC_TIMEOUT:
4651918a ML	242	if (!ir_dev->props->max_timeout)
	243	return -ENOSYS;
	244
	245	tmp = val * 1000;
	246
	247	if (tmp < ir_dev->props->min_timeout \|\|
	248	tmp > ir_dev->props->max_timeout)
	249	return -EINVAL;
	250
	251	ir_dev->props->timeout = tmp;
	252	break;
	253
	254	case LIRC_SET_REC_TIMEOUT_REPORTS:
	255	lirc->send_timeout_reports = !!val;
ca414698 JW	256	break;
	257
	258	default:
044e5878	259	return lirc_dev_fop_ioctl(filep, cmd, arg);
ca414698 JW	260	}
ca414698 JW	261
e589333f	262	if (_IOC_DIR(cmd) & _IOC_READ)
be1f985f	263	ret = put_user(val, (__u32 *)arg);
e589333f	264
ca414698 JW	265	return ret;
	266	}
	267
	268	static int ir_lirc_open(void *data)
	269	{
	270	return 0;
	271	}
	272
	273	static void ir_lirc_close(void *data)
	274	{
	275	return;
	276	}
	277
	278	static struct file_operations lirc_fops = {
	279	.owner = THIS_MODULE,
	280	.write = ir_lirc_transmit_ir,
044e5878	281	.unlocked_ioctl = ir_lirc_ioctl,
8be292cc JW	282	#ifdef CONFIG_COMPAT
	283	.compat_ioctl = ir_lirc_ioctl,
	284	#endif
ca414698 JW	285	.read = lirc_dev_fop_read,
	286	.poll = lirc_dev_fop_poll,
	287	.open = lirc_dev_fop_open,
	288	.release = lirc_dev_fop_close,
d9d2e9d5	289	.llseek = no_llseek,
ca414698 JW	290	};
	291
	292	static int ir_lirc_register(struct input_dev *input_dev)
	293	{
	294	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	295	struct lirc_driver *drv;
	296	struct lirc_buffer *rbuf;
	297	int rc = -ENOMEM;
	298	unsigned long features;
	299
	300	drv = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
	301	if (!drv)
	302	return rc;
	303
	304	rbuf = kzalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
49b7a12c	305	if (!rbuf)
ca414698 JW	306	goto rbuf_alloc_failed;
	307
	308	rc = lirc_buffer_init(rbuf, sizeof(int), LIRCBUF_SIZE);
	309	if (rc)
	310	goto rbuf_init_failed;
	311
	312	features = LIRC_CAN_REC_MODE2;
	313	if (ir_dev->props->tx_ir) {
e589333f	314
ca414698 JW	315	features \|= LIRC_CAN_SEND_PULSE;
	316	if (ir_dev->props->s_tx_mask)
	317	features \|= LIRC_CAN_SET_TRANSMITTER_MASK;
	318	if (ir_dev->props->s_tx_carrier)
	319	features \|= LIRC_CAN_SET_SEND_CARRIER;
e589333f ML	320
e589333f ML	321	if (ir_dev->props->s_tx_duty_cycle)
67332ba8	322	features \|= LIRC_CAN_SET_SEND_DUTY_CYCLE;
ca414698 JW	323	}
ca414698 JW	324
e589333f ML	325	if (ir_dev->props->s_rx_carrier_range)
	326	features \|= LIRC_CAN_SET_REC_CARRIER \|
	327	LIRC_CAN_SET_REC_CARRIER_RANGE;
	328
	329	if (ir_dev->props->s_learning_mode)
	330	features \|= LIRC_CAN_USE_WIDEBAND_RECEIVER;
	331
4651918a ML	332	if (ir_dev->props->s_carrier_report)
	333	features \|= LIRC_CAN_MEASURE_CARRIER;
	334
	335
e589333f ML	336	if (ir_dev->props->max_timeout)
	337	features \|= LIRC_CAN_SET_REC_TIMEOUT;
	338
	339
ca414698 JW	340	snprintf(drv->name, sizeof(drv->name), "ir-lirc-codec (%s)",
	341	ir_dev->driver_name);
	342	drv->minor = -1;
	343	drv->features = features;
	344	drv->data = &ir_dev->raw->lirc;
	345	drv->rbuf = rbuf;
	346	drv->set_use_inc = &ir_lirc_open;
	347	drv->set_use_dec = &ir_lirc_close;
	348	drv->code_length = sizeof(struct ir_raw_event) * 8;
	349	drv->fops = &lirc_fops;
	350	drv->dev = &ir_dev->dev;
	351	drv->owner = THIS_MODULE;
	352
	353	drv->minor = lirc_register_driver(drv);
	354	if (drv->minor < 0) {
	355	rc = -ENODEV;
	356	goto lirc_register_failed;
	357	}
	358
	359	ir_dev->raw->lirc.drv = drv;
	360	ir_dev->raw->lirc.ir_dev = ir_dev;
ca414698 JW	361	return 0;
	362
	363	lirc_register_failed:
	364	rbuf_init_failed:
	365	kfree(rbuf);
	366	rbuf_alloc_failed:
	367	kfree(drv);
	368
	369	return rc;
	370	}
	371
	372	static int ir_lirc_unregister(struct input_dev *input_dev)
	373	{
	374	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
	375	struct lirc_codec *lirc = &ir_dev->raw->lirc;
	376
	377	lirc_unregister_driver(lirc->drv->minor);
	378	lirc_buffer_free(lirc->drv->rbuf);
	379	kfree(lirc->drv);
	380
	381	return 0;
	382	}
	383
	384	static struct ir_raw_handler lirc_handler = {
	385	.protocols = IR_TYPE_LIRC,
	386	.decode = ir_lirc_decode,
	387	.raw_register = ir_lirc_register,
	388	.raw_unregister = ir_lirc_unregister,
	389	};
	390
	391	static int __init ir_lirc_codec_init(void)
	392	{
	393	ir_raw_handler_register(&lirc_handler);
	394
	395	printk(KERN_INFO "IR LIRC bridge handler initialized\n");
	396	return 0;
	397	}
	398
	399	static void __exit ir_lirc_codec_exit(void)
	400	{
	401	ir_raw_handler_unregister(&lirc_handler);
	402	}
	403
	404	module_init(ir_lirc_codec_init);
	405	module_exit(ir_lirc_codec_exit);
	406
	407	MODULE_LICENSE("GPL");
	408	MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
	409	MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
	410	MODULE_DESCRIPTION("LIRC IR handler bridge");