[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/rc-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 rc_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 rc_dev *dev, struct ir_raw_event ev)
{
	struct lirc_codec *lirc = &dev->raw->lirc;
	int sample;

	if (!(dev->raw->enabled_protocols & RC_TYPE_LIRC))
		return 0;

	if (!dev->raw->lirc.drv || !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(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(dev->raw->lirc.drv->rbuf,
			  (unsigned char *) &sample);
	wake_up(&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 rc_dev *dev;
	int *txbuf; /* buffer with values to transmit */
	int ret = 0;
	size_t 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 || n % sizeof(int) != 0)
		return -EINVAL;

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

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

	if (dev->tx_ir)
		ret = dev->tx_ir(dev, 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 rc_dev *dev;
	int ret = 0;
	__u32 val = 0, tmp;

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

	dev = lirc->dev;
	if (!dev)
		return -EFAULT;

	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 (!dev->s_tx_mask)
			return -EINVAL;

		return dev->s_tx_mask(dev, val);

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

		return dev->s_tx_carrier(dev, val);

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

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

		return dev->s_tx_duty_cycle(dev, val);

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

		if (val <= 0)
			return -EINVAL;

		return dev->s_rx_carrier_range(dev,
					       dev->raw->lirc.carrier_low,
					       val);

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

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

	case LIRC_GET_REC_RESOLUTION:
		val = dev->rx_resolution;
		break;

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

		return dev->s_learning_mode(dev, !!val);

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

		return dev->s_carrier_report(dev, !!val);

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

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

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

		tmp = val * 1000;

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

		dev->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 rc_dev *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 (dev->tx_ir) {
		features |= LIRC_CAN_SEND_PULSE;
		if (dev->s_tx_mask)
			features |= LIRC_CAN_SET_TRANSMITTER_MASK;
		if (dev->s_tx_carrier)
			features |= LIRC_CAN_SET_SEND_CARRIER;
		if (dev->s_tx_duty_cycle)
			features |= LIRC_CAN_SET_SEND_DUTY_CYCLE;
	}

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

	if (dev->s_learning_mode)
		features |= LIRC_CAN_USE_WIDEBAND_RECEIVER;

	if (dev->s_carrier_report)
		features |= LIRC_CAN_MEASURE_CARRIER;

	if (dev->max_timeout)
		features |= LIRC_CAN_SET_REC_TIMEOUT;

	snprintf(drv->name, sizeof(drv->name), "ir-lirc-codec (%s)",
		 dev->driver_name);
	drv->minor = -1;
	drv->features = features;
	drv->data = &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 = &dev->dev;
	drv->owner = THIS_MODULE;

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

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

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

	return rc;
}

static int ir_lirc_unregister(struct rc_dev *dev)
{
	struct lirc_codec *lirc = &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	= RC_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>
6bda9644	19	#include <media/rc-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.
d8b4b582	27	* @input_dev: the struct rc_dev descriptor of the device
ca414698 JW	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	*/
d8b4b582	32	static int ir_lirc_decode(struct rc_dev *dev, struct ir_raw_event ev)
ca414698	33	{
d8b4b582	34	struct lirc_codec *lirc = &dev->raw->lirc;
510fcb70	35	int sample;
ca414698	36
52b66144	37	if (!(dev->raw->enabled_protocols & RC_TYPE_LIRC))
ca414698 JW	38	return 0;
ca414698 JW	39
d8b4b582	40	if (!dev->raw->lirc.drv \|\| !dev->raw->lirc.drv->rbuf)
ca414698 JW	41	return -EINVAL;
ca414698 JW	42
4651918a ML	43	/* Packet start */
4651918a ML	44	if (ev.reset)
510fcb70 ML	45	return 0;
510fcb70 ML	46
4651918a ML	47	/* Carrier reports */
	48	if (ev.carrier_report) {
	49	sample = LIRC_FREQUENCY(ev.carrier);
ca414698	50
4651918a ML	51	/* Packet end */
	52	} else if (ev.timeout) {
	53
	54	if (lirc->gap)
	55	return 0;
	56
	57	lirc->gap_start = ktime_get();
	58	lirc->gap = true;
	59	lirc->gap_duration = ev.duration;
	60
	61	if (!lirc->send_timeout_reports)
	62	return 0;
	63
	64	sample = LIRC_TIMEOUT(ev.duration / 1000);
	65
	66	/* Normal sample */
	67	} else {
	68
	69	if (lirc->gap) {
	70	int gap_sample;
	71
	72	lirc->gap_duration += ktime_to_ns(ktime_sub(ktime_get(),
	73	lirc->gap_start));
	74
	75	/* Convert to ms and cap by LIRC_VALUE_MASK */
	76	do_div(lirc->gap_duration, 1000);
	77	lirc->gap_duration = min(lirc->gap_duration,
	78	(u64)LIRC_VALUE_MASK);
	79
	80	gap_sample = LIRC_SPACE(lirc->gap_duration);
d8b4b582	81	lirc_buffer_write(dev->raw->lirc.drv->rbuf,
4651918a ML	82	(unsigned char *) &gap_sample);
	83	lirc->gap = false;
	84	}
	85
	86	sample = ev.pulse ? LIRC_PULSE(ev.duration / 1000) :
	87	LIRC_SPACE(ev.duration / 1000);
	88	}
ca414698	89
d8b4b582	90	lirc_buffer_write(dev->raw->lirc.drv->rbuf,
510fcb70	91	(unsigned char *) &sample);
d8b4b582	92	wake_up(&dev->raw->lirc.drv->rbuf->wait_poll);
ca414698	93
ca414698 JW	94	return 0;
	95	}
	96
	97	static ssize_t ir_lirc_transmit_ir(struct file file, const char buf,
	98	size_t n, loff_t *ppos)
	99	{
	100	struct lirc_codec *lirc;
d8b4b582	101	struct rc_dev *dev;
ca414698	102	int txbuf; / buffer with values to transmit */
4c8b8698 VK	103	int ret = 0;
4c8b8698 VK	104	size_t count;
ca414698 JW	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);
4c8b8698	114	if (count > LIRCBUF_SIZE \|\| count % 2 == 0 \|\| n % sizeof(int) != 0)
ca414698 JW	115	return -EINVAL;
ca414698 JW	116
6efb870a JW	117	txbuf = memdup_user(buf, n);
	118	if (IS_ERR(txbuf))
	119	return PTR_ERR(txbuf);
ca414698	120
d8b4b582 DH	121	dev = lirc->dev;
d8b4b582 DH	122	if (!dev) {
ca414698 JW	123	ret = -EFAULT;
	124	goto out;
	125	}
	126
d8b4b582 DH	127	if (dev->tx_ir)
d8b4b582 DH	128	ret = dev->tx_ir(dev, txbuf, (u32)n);
ca414698 JW	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	{
ca414698 JW	138	struct lirc_codec *lirc;
d8b4b582	139	struct rc_dev *dev;
ca414698	140	int ret = 0;
4651918a	141	__u32 val = 0, tmp;
ca414698 JW	142
	143	lirc = lirc_get_pdata(filep);
	144	if (!lirc)
	145	return -EFAULT;
	146
d8b4b582 DH	147	dev = lirc->dev;
d8b4b582 DH	148	if (!dev)
ca414698 JW	149	return -EFAULT;
ca414698 JW	150
e589333f	151	if (_IOC_DIR(cmd) & _IOC_WRITE) {
be1f985f	152	ret = get_user(val, (__u32 *)arg);
ca414698 JW	153	if (ret)
ca414698 JW	154	return ret;
e589333f ML	155	}
	156
	157	switch (cmd) {
	158
	159	/* legacy support */
	160	case LIRC_GET_SEND_MODE:
	161	val = LIRC_CAN_SEND_PULSE & LIRC_CAN_SEND_MASK;
	162	break;
	163
	164	case LIRC_SET_SEND_MODE:
	165	if (val != (LIRC_MODE_PULSE & LIRC_CAN_SEND_MASK))
	166	return -EINVAL;
4651918a	167	return 0;
ca414698	168
e589333f ML	169	/* TX settings */
e589333f ML	170	case LIRC_SET_TRANSMITTER_MASK:
d8b4b582	171	if (!dev->s_tx_mask)
ca414698	172	return -EINVAL;
4651918a	173
d8b4b582	174	return dev->s_tx_mask(dev, val);
ca414698 JW	175
ca414698 JW	176	case LIRC_SET_SEND_CARRIER:
d8b4b582	177	if (!dev->s_tx_carrier)
ca414698	178	return -EINVAL;
4651918a	179
d8b4b582	180	return dev->s_tx_carrier(dev, val);
ca414698	181
e589333f	182	case LIRC_SET_SEND_DUTY_CYCLE:
d8b4b582	183	if (!dev->s_tx_duty_cycle)
e589333f ML	184	return -ENOSYS;
	185
	186	if (val <= 0 \|\| val >= 100)
	187	return -EINVAL;
	188
d8b4b582	189	return dev->s_tx_duty_cycle(dev, val);
ca414698	190
e589333f ML	191	/* RX settings */
e589333f ML	192	case LIRC_SET_REC_CARRIER:
d8b4b582	193	if (!dev->s_rx_carrier_range)
e589333f	194	return -ENOSYS;
ca414698	195
4651918a ML	196	if (val <= 0)
	197	return -EINVAL;
	198
d8b4b582 DH	199	return dev->s_rx_carrier_range(dev,
	200	dev->raw->lirc.carrier_low,
	201	val);
e589333f ML	202
e589333f ML	203	case LIRC_SET_REC_CARRIER_RANGE:
4651918a ML	204	if (val <= 0)
4651918a ML	205	return -EINVAL;
e589333f	206
d8b4b582	207	dev->raw->lirc.carrier_low = val;
4651918a	208	return 0;
e589333f ML	209
e589333f ML	210	case LIRC_GET_REC_RESOLUTION:
d8b4b582	211	val = dev->rx_resolution;
e589333f ML	212	break;
	213
	214	case LIRC_SET_WIDEBAND_RECEIVER:
d8b4b582	215	if (!dev->s_learning_mode)
e589333f ML	216	return -ENOSYS;
e589333f ML	217
d8b4b582	218	return dev->s_learning_mode(dev, !!val);
4651918a ML	219
4651918a ML	220	case LIRC_SET_MEASURE_CARRIER_MODE:
d8b4b582	221	if (!dev->s_carrier_report)
4651918a ML	222	return -ENOSYS;
4651918a ML	223
d8b4b582	224	return dev->s_carrier_report(dev, !!val);
4651918a	225
e589333f ML	226	/* Generic timeout support */
e589333f ML	227	case LIRC_GET_MIN_TIMEOUT:
d8b4b582	228	if (!dev->max_timeout)
e589333f	229	return -ENOSYS;
d8b4b582	230	val = dev->min_timeout / 1000;
e589333f ML	231	break;
	232
	233	case LIRC_GET_MAX_TIMEOUT:
d8b4b582	234	if (!dev->max_timeout)
e589333f	235	return -ENOSYS;
d8b4b582	236	val = dev->max_timeout / 1000;
e589333f ML	237	break;
	238
	239	case LIRC_SET_REC_TIMEOUT:
d8b4b582	240	if (!dev->max_timeout)
4651918a ML	241	return -ENOSYS;
	242
	243	tmp = val * 1000;
	244
d8b4b582 DH	245	if (tmp < dev->min_timeout \|\|
d8b4b582 DH	246	tmp > dev->max_timeout)
4651918a ML	247	return -EINVAL;
4651918a ML	248
d8b4b582	249	dev->timeout = tmp;
4651918a ML	250	break;
	251
	252	case LIRC_SET_REC_TIMEOUT_REPORTS:
	253	lirc->send_timeout_reports = !!val;
ca414698 JW	254	break;
	255
	256	default:
044e5878	257	return lirc_dev_fop_ioctl(filep, cmd, arg);
ca414698 JW	258	}
ca414698 JW	259
e589333f	260	if (_IOC_DIR(cmd) & _IOC_READ)
be1f985f	261	ret = put_user(val, (__u32 *)arg);
e589333f	262
ca414698 JW	263	return ret;
	264	}
	265
	266	static int ir_lirc_open(void *data)
	267	{
	268	return 0;
	269	}
	270
	271	static void ir_lirc_close(void *data)
	272	{
	273	return;
	274	}
	275
	276	static struct file_operations lirc_fops = {
	277	.owner = THIS_MODULE,
	278	.write = ir_lirc_transmit_ir,
044e5878	279	.unlocked_ioctl = ir_lirc_ioctl,
8be292cc JW	280	#ifdef CONFIG_COMPAT
	281	.compat_ioctl = ir_lirc_ioctl,
	282	#endif
ca414698 JW	283	.read = lirc_dev_fop_read,
	284	.poll = lirc_dev_fop_poll,
	285	.open = lirc_dev_fop_open,
	286	.release = lirc_dev_fop_close,
d9d2e9d5	287	.llseek = no_llseek,
ca414698 JW	288	};
ca414698 JW	289
d8b4b582	290	static int ir_lirc_register(struct rc_dev *dev)
ca414698	291	{
ca414698 JW	292	struct lirc_driver *drv;
	293	struct lirc_buffer *rbuf;
	294	int rc = -ENOMEM;
	295	unsigned long features;
	296
	297	drv = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
	298	if (!drv)
	299	return rc;
	300
	301	rbuf = kzalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
49b7a12c	302	if (!rbuf)
ca414698 JW	303	goto rbuf_alloc_failed;
	304
	305	rc = lirc_buffer_init(rbuf, sizeof(int), LIRCBUF_SIZE);
	306	if (rc)
	307	goto rbuf_init_failed;
	308
	309	features = LIRC_CAN_REC_MODE2;
d8b4b582	310	if (dev->tx_ir) {
ca414698	311	features \|= LIRC_CAN_SEND_PULSE;
d8b4b582	312	if (dev->s_tx_mask)
ca414698	313	features \|= LIRC_CAN_SET_TRANSMITTER_MASK;
d8b4b582	314	if (dev->s_tx_carrier)
ca414698	315	features \|= LIRC_CAN_SET_SEND_CARRIER;
d8b4b582	316	if (dev->s_tx_duty_cycle)
67332ba8	317	features \|= LIRC_CAN_SET_SEND_DUTY_CYCLE;
ca414698 JW	318	}
ca414698 JW	319
d8b4b582	320	if (dev->s_rx_carrier_range)
e589333f ML	321	features \|= LIRC_CAN_SET_REC_CARRIER \|
	322	LIRC_CAN_SET_REC_CARRIER_RANGE;
	323
d8b4b582	324	if (dev->s_learning_mode)
e589333f ML	325	features \|= LIRC_CAN_USE_WIDEBAND_RECEIVER;
e589333f ML	326
d8b4b582	327	if (dev->s_carrier_report)
4651918a ML	328	features \|= LIRC_CAN_MEASURE_CARRIER;
4651918a ML	329
d8b4b582	330	if (dev->max_timeout)
e589333f ML	331	features \|= LIRC_CAN_SET_REC_TIMEOUT;
e589333f ML	332
ca414698	333	snprintf(drv->name, sizeof(drv->name), "ir-lirc-codec (%s)",
d8b4b582	334	dev->driver_name);
ca414698 JW	335	drv->minor = -1;
ca414698 JW	336	drv->features = features;
d8b4b582	337	drv->data = &dev->raw->lirc;
ca414698 JW	338	drv->rbuf = rbuf;
	339	drv->set_use_inc = &ir_lirc_open;
	340	drv->set_use_dec = &ir_lirc_close;
	341	drv->code_length = sizeof(struct ir_raw_event) * 8;
	342	drv->fops = &lirc_fops;
d8b4b582	343	drv->dev = &dev->dev;
ca414698 JW	344	drv->owner = THIS_MODULE;
	345
	346	drv->minor = lirc_register_driver(drv);
	347	if (drv->minor < 0) {
	348	rc = -ENODEV;
	349	goto lirc_register_failed;
	350	}
	351
d8b4b582 DH	352	dev->raw->lirc.drv = drv;
d8b4b582 DH	353	dev->raw->lirc.dev = dev;
ca414698 JW	354	return 0;
	355
	356	lirc_register_failed:
	357	rbuf_init_failed:
	358	kfree(rbuf);
	359	rbuf_alloc_failed:
	360	kfree(drv);
	361
	362	return rc;
	363	}
	364
d8b4b582	365	static int ir_lirc_unregister(struct rc_dev *dev)
ca414698	366	{
d8b4b582	367	struct lirc_codec *lirc = &dev->raw->lirc;
ca414698 JW	368
	369	lirc_unregister_driver(lirc->drv->minor);
	370	lirc_buffer_free(lirc->drv->rbuf);
	371	kfree(lirc->drv);
	372
	373	return 0;
	374	}
	375
	376	static struct ir_raw_handler lirc_handler = {
52b66144	377	.protocols = RC_TYPE_LIRC,
ca414698 JW	378	.decode = ir_lirc_decode,
	379	.raw_register = ir_lirc_register,
	380	.raw_unregister = ir_lirc_unregister,
	381	};
	382
	383	static int __init ir_lirc_codec_init(void)
	384	{
	385	ir_raw_handler_register(&lirc_handler);
	386
	387	printk(KERN_INFO "IR LIRC bridge handler initialized\n");
	388	return 0;
	389	}
	390
	391	static void __exit ir_lirc_codec_exit(void)
	392	{
	393	ir_raw_handler_unregister(&lirc_handler);
	394	}
	395
	396	module_init(ir_lirc_codec_init);
	397	module_exit(ir_lirc_codec_exit);
	398
	399	MODULE_LICENSE("GPL");
	400	MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
	401	MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
	402	MODULE_DESCRIPTION("LIRC IR handler bridge");