[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / rc / ir-lirc-codec.c

/* ir-lirc-codec.c - rc-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);
		IR_dprintk(2, "carrier report (freq: %d)\n", sample);

	/* 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);
		IR_dprintk(2, "timeout report (duration: %d)\n", sample);

	/* 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);
		IR_dprintk(2, "delivering %uus %s to lirc_dev\n",
			   TO_US(ev.duration), TO_STR(ev.pulse));
	}

	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
457e2ffc	1	/* ir-lirc-codec.c - rc-core to classic lirc interface bridge
ca414698 JW	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);
457e2ffc	50	IR_dprintk(2, "carrier report (freq: %d)\n", sample);
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);
457e2ffc	66	IR_dprintk(2, "timeout report (duration: %d)\n", sample);
4651918a ML	67
	68	/* Normal sample */
	69	} else {
	70
	71	if (lirc->gap) {
	72	int gap_sample;
	73
	74	lirc->gap_duration += ktime_to_ns(ktime_sub(ktime_get(),
	75	lirc->gap_start));
	76
	77	/* Convert to ms and cap by LIRC_VALUE_MASK */
	78	do_div(lirc->gap_duration, 1000);
	79	lirc->gap_duration = min(lirc->gap_duration,
	80	(u64)LIRC_VALUE_MASK);
	81
	82	gap_sample = LIRC_SPACE(lirc->gap_duration);
d8b4b582	83	lirc_buffer_write(dev->raw->lirc.drv->rbuf,
4651918a ML	84	(unsigned char *) &gap_sample);
	85	lirc->gap = false;
	86	}
	87
	88	sample = ev.pulse ? LIRC_PULSE(ev.duration / 1000) :
	89	LIRC_SPACE(ev.duration / 1000);
457e2ffc JW	90	IR_dprintk(2, "delivering %uus %s to lirc_dev\n",
457e2ffc JW	91	TO_US(ev.duration), TO_STR(ev.pulse));
4651918a	92	}
ca414698	93
d8b4b582	94	lirc_buffer_write(dev->raw->lirc.drv->rbuf,
510fcb70	95	(unsigned char *) &sample);
d8b4b582	96	wake_up(&dev->raw->lirc.drv->rbuf->wait_poll);
ca414698	97
ca414698 JW	98	return 0;
	99	}
	100
	101	static ssize_t ir_lirc_transmit_ir(struct file file, const char buf,
	102	size_t n, loff_t *ppos)
	103	{
	104	struct lirc_codec *lirc;
d8b4b582	105	struct rc_dev *dev;
ca414698	106	int txbuf; / buffer with values to transmit */
4c8b8698 VK	107	int ret = 0;
4c8b8698 VK	108	size_t count;
ca414698 JW	109
	110	lirc = lirc_get_pdata(file);
	111	if (!lirc)
	112	return -EFAULT;
	113
	114	if (n % sizeof(int))
	115	return -EINVAL;
	116
	117	count = n / sizeof(int);
4c8b8698	118	if (count > LIRCBUF_SIZE \|\| count % 2 == 0 \|\| n % sizeof(int) != 0)
ca414698 JW	119	return -EINVAL;
ca414698 JW	120
6efb870a JW	121	txbuf = memdup_user(buf, n);
	122	if (IS_ERR(txbuf))
	123	return PTR_ERR(txbuf);
ca414698	124
d8b4b582 DH	125	dev = lirc->dev;
d8b4b582 DH	126	if (!dev) {
ca414698 JW	127	ret = -EFAULT;
	128	goto out;
	129	}
	130
d8b4b582 DH	131	if (dev->tx_ir)
d8b4b582 DH	132	ret = dev->tx_ir(dev, txbuf, (u32)n);
ca414698 JW	133
	134	out:
	135	kfree(txbuf);
	136	return ret;
	137	}
	138
e589333f ML	139	static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
e589333f ML	140	unsigned long __user arg)
ca414698 JW	141	{
ca414698 JW	142	struct lirc_codec *lirc;
d8b4b582	143	struct rc_dev *dev;
ca414698	144	int ret = 0;
4651918a	145	__u32 val = 0, tmp;
ca414698 JW	146
	147	lirc = lirc_get_pdata(filep);
	148	if (!lirc)
	149	return -EFAULT;
	150
d8b4b582 DH	151	dev = lirc->dev;
d8b4b582 DH	152	if (!dev)
ca414698 JW	153	return -EFAULT;
ca414698 JW	154
e589333f	155	if (_IOC_DIR(cmd) & _IOC_WRITE) {
be1f985f	156	ret = get_user(val, (__u32 *)arg);
ca414698 JW	157	if (ret)
ca414698 JW	158	return ret;
e589333f ML	159	}
	160
	161	switch (cmd) {
	162
	163	/* legacy support */
	164	case LIRC_GET_SEND_MODE:
	165	val = LIRC_CAN_SEND_PULSE & LIRC_CAN_SEND_MASK;
	166	break;
	167
	168	case LIRC_SET_SEND_MODE:
	169	if (val != (LIRC_MODE_PULSE & LIRC_CAN_SEND_MASK))
	170	return -EINVAL;
4651918a	171	return 0;
ca414698	172
e589333f ML	173	/* TX settings */
e589333f ML	174	case LIRC_SET_TRANSMITTER_MASK:
d8b4b582	175	if (!dev->s_tx_mask)
ca414698	176	return -EINVAL;
4651918a	177
d8b4b582	178	return dev->s_tx_mask(dev, val);
ca414698 JW	179
ca414698 JW	180	case LIRC_SET_SEND_CARRIER:
d8b4b582	181	if (!dev->s_tx_carrier)
ca414698	182	return -EINVAL;
4651918a	183
d8b4b582	184	return dev->s_tx_carrier(dev, val);
ca414698	185
e589333f	186	case LIRC_SET_SEND_DUTY_CYCLE:
d8b4b582	187	if (!dev->s_tx_duty_cycle)
e589333f ML	188	return -ENOSYS;
	189
	190	if (val <= 0 \|\| val >= 100)
	191	return -EINVAL;
	192
d8b4b582	193	return dev->s_tx_duty_cycle(dev, val);
ca414698	194
e589333f ML	195	/* RX settings */
e589333f ML	196	case LIRC_SET_REC_CARRIER:
d8b4b582	197	if (!dev->s_rx_carrier_range)
e589333f	198	return -ENOSYS;
ca414698	199
4651918a ML	200	if (val <= 0)
	201	return -EINVAL;
	202
d8b4b582 DH	203	return dev->s_rx_carrier_range(dev,
	204	dev->raw->lirc.carrier_low,
	205	val);
e589333f ML	206
e589333f ML	207	case LIRC_SET_REC_CARRIER_RANGE:
4651918a ML	208	if (val <= 0)
4651918a ML	209	return -EINVAL;
e589333f	210
d8b4b582	211	dev->raw->lirc.carrier_low = val;
4651918a	212	return 0;
e589333f ML	213
e589333f ML	214	case LIRC_GET_REC_RESOLUTION:
d8b4b582	215	val = dev->rx_resolution;
e589333f ML	216	break;
	217
	218	case LIRC_SET_WIDEBAND_RECEIVER:
d8b4b582	219	if (!dev->s_learning_mode)
e589333f ML	220	return -ENOSYS;
e589333f ML	221
d8b4b582	222	return dev->s_learning_mode(dev, !!val);
4651918a ML	223
4651918a ML	224	case LIRC_SET_MEASURE_CARRIER_MODE:
d8b4b582	225	if (!dev->s_carrier_report)
4651918a ML	226	return -ENOSYS;
4651918a ML	227
d8b4b582	228	return dev->s_carrier_report(dev, !!val);
4651918a	229
e589333f ML	230	/* Generic timeout support */
e589333f ML	231	case LIRC_GET_MIN_TIMEOUT:
d8b4b582	232	if (!dev->max_timeout)
e589333f	233	return -ENOSYS;
d8b4b582	234	val = dev->min_timeout / 1000;
e589333f ML	235	break;
	236
	237	case LIRC_GET_MAX_TIMEOUT:
d8b4b582	238	if (!dev->max_timeout)
e589333f	239	return -ENOSYS;
d8b4b582	240	val = dev->max_timeout / 1000;
e589333f ML	241	break;
	242
	243	case LIRC_SET_REC_TIMEOUT:
d8b4b582	244	if (!dev->max_timeout)
4651918a ML	245	return -ENOSYS;
	246
	247	tmp = val * 1000;
	248
d8b4b582 DH	249	if (tmp < dev->min_timeout \|\|
d8b4b582 DH	250	tmp > dev->max_timeout)
4651918a ML	251	return -EINVAL;
4651918a ML	252
d8b4b582	253	dev->timeout = tmp;
4651918a ML	254	break;
	255
	256	case LIRC_SET_REC_TIMEOUT_REPORTS:
	257	lirc->send_timeout_reports = !!val;
ca414698 JW	258	break;
	259
	260	default:
044e5878	261	return lirc_dev_fop_ioctl(filep, cmd, arg);
ca414698 JW	262	}
ca414698 JW	263
e589333f	264	if (_IOC_DIR(cmd) & _IOC_READ)
be1f985f	265	ret = put_user(val, (__u32 *)arg);
e589333f	266
ca414698 JW	267	return ret;
	268	}
	269
	270	static int ir_lirc_open(void *data)
	271	{
	272	return 0;
	273	}
	274
	275	static void ir_lirc_close(void *data)
	276	{
	277	return;
	278	}
	279
	280	static struct file_operations lirc_fops = {
	281	.owner = THIS_MODULE,
	282	.write = ir_lirc_transmit_ir,
044e5878	283	.unlocked_ioctl = ir_lirc_ioctl,
8be292cc JW	284	#ifdef CONFIG_COMPAT
	285	.compat_ioctl = ir_lirc_ioctl,
	286	#endif
ca414698 JW	287	.read = lirc_dev_fop_read,
	288	.poll = lirc_dev_fop_poll,
	289	.open = lirc_dev_fop_open,
	290	.release = lirc_dev_fop_close,
d9d2e9d5	291	.llseek = no_llseek,
ca414698 JW	292	};
ca414698 JW	293
d8b4b582	294	static int ir_lirc_register(struct rc_dev *dev)
ca414698	295	{
ca414698 JW	296	struct lirc_driver *drv;
	297	struct lirc_buffer *rbuf;
	298	int rc = -ENOMEM;
	299	unsigned long features;
	300
	301	drv = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
	302	if (!drv)
	303	return rc;
	304
	305	rbuf = kzalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
49b7a12c	306	if (!rbuf)
ca414698 JW	307	goto rbuf_alloc_failed;
	308
	309	rc = lirc_buffer_init(rbuf, sizeof(int), LIRCBUF_SIZE);
	310	if (rc)
	311	goto rbuf_init_failed;
	312
	313	features = LIRC_CAN_REC_MODE2;
d8b4b582	314	if (dev->tx_ir) {
ca414698	315	features \|= LIRC_CAN_SEND_PULSE;
d8b4b582	316	if (dev->s_tx_mask)
ca414698	317	features \|= LIRC_CAN_SET_TRANSMITTER_MASK;
d8b4b582	318	if (dev->s_tx_carrier)
ca414698	319	features \|= LIRC_CAN_SET_SEND_CARRIER;
d8b4b582	320	if (dev->s_tx_duty_cycle)
67332ba8	321	features \|= LIRC_CAN_SET_SEND_DUTY_CYCLE;
ca414698 JW	322	}
ca414698 JW	323
d8b4b582	324	if (dev->s_rx_carrier_range)
e589333f ML	325	features \|= LIRC_CAN_SET_REC_CARRIER \|
	326	LIRC_CAN_SET_REC_CARRIER_RANGE;
	327
d8b4b582	328	if (dev->s_learning_mode)
e589333f ML	329	features \|= LIRC_CAN_USE_WIDEBAND_RECEIVER;
e589333f ML	330
d8b4b582	331	if (dev->s_carrier_report)
4651918a ML	332	features \|= LIRC_CAN_MEASURE_CARRIER;
4651918a ML	333
d8b4b582	334	if (dev->max_timeout)
e589333f ML	335	features \|= LIRC_CAN_SET_REC_TIMEOUT;
e589333f ML	336
ca414698	337	snprintf(drv->name, sizeof(drv->name), "ir-lirc-codec (%s)",
d8b4b582	338	dev->driver_name);
ca414698 JW	339	drv->minor = -1;
ca414698 JW	340	drv->features = features;
d8b4b582	341	drv->data = &dev->raw->lirc;
ca414698 JW	342	drv->rbuf = rbuf;
	343	drv->set_use_inc = &ir_lirc_open;
	344	drv->set_use_dec = &ir_lirc_close;
	345	drv->code_length = sizeof(struct ir_raw_event) * 8;
	346	drv->fops = &lirc_fops;
d8b4b582	347	drv->dev = &dev->dev;
ca414698 JW	348	drv->owner = THIS_MODULE;
	349
	350	drv->minor = lirc_register_driver(drv);
	351	if (drv->minor < 0) {
	352	rc = -ENODEV;
	353	goto lirc_register_failed;
	354	}
	355
d8b4b582 DH	356	dev->raw->lirc.drv = drv;
d8b4b582 DH	357	dev->raw->lirc.dev = dev;
ca414698 JW	358	return 0;
	359
	360	lirc_register_failed:
	361	rbuf_init_failed:
	362	kfree(rbuf);
	363	rbuf_alloc_failed:
	364	kfree(drv);
	365
	366	return rc;
	367	}
	368
d8b4b582	369	static int ir_lirc_unregister(struct rc_dev *dev)
ca414698	370	{
d8b4b582	371	struct lirc_codec *lirc = &dev->raw->lirc;
ca414698 JW	372
	373	lirc_unregister_driver(lirc->drv->minor);
	374	lirc_buffer_free(lirc->drv->rbuf);
	375	kfree(lirc->drv);
	376
	377	return 0;
	378	}
	379
	380	static struct ir_raw_handler lirc_handler = {
52b66144	381	.protocols = RC_TYPE_LIRC,
ca414698 JW	382	.decode = ir_lirc_decode,
	383	.raw_register = ir_lirc_register,
	384	.raw_unregister = ir_lirc_unregister,
	385	};
	386
	387	static int __init ir_lirc_codec_init(void)
	388	{
	389	ir_raw_handler_register(&lirc_handler);
	390
	391	printk(KERN_INFO "IR LIRC bridge handler initialized\n");
	392	return 0;
	393	}
	394
	395	static void __exit ir_lirc_codec_exit(void)
	396	{
	397	ir_raw_handler_unregister(&lirc_handler);
	398	}
	399
	400	module_init(ir_lirc_codec_init);
	401	module_exit(ir_lirc_codec_exit);
	402
	403	MODULE_LICENSE("GPL");
	404	MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
	405	MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
	406	MODULE_DESCRIPTION("LIRC IR handler bridge");