drivers/media/rc/ir-lirc-codec.c - SHIFTPHONES/kernel/shift/mainline - Gitiles

 /* 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_raw_event() - Send raw IR data to lirc to be relayed to userspace
  *
  * @dev:	the struct rc_dev descriptor of the device
  * @ev:		the struct ir_raw_event descriptor of the pulse/space
  */
 void ir_lirc_raw_event(struct rc_dev *dev, struct ir_raw_event ev)
 {
 	int sample;

 	/* Packet start */
 	if (ev.reset) {
 		/* Userspace expects a long space event before the start of
 		 * the signal to use as a sync.  This may be done with repeat
 		 * packets and normal samples.  But if a reset has been sent
 		 * then we assume that a long time has passed, so we send a
 		 * space with the maximum time value. */
 		sample = LIRC_SPACE(LIRC_VALUE_MASK);
 		IR_dprintk(2, "delivering reset sync space to lirc_dev\n");

 	/* Carrier reports */
 	} else 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 (dev->gap)
 			return;

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

 		if (!dev->send_timeout_reports)
 			return;

 		sample = LIRC_TIMEOUT(ev.duration / 1000);
 		IR_dprintk(2, "timeout report (duration: %d)\n", sample);

 	/* Normal sample */
 	} else {

 		if (dev->gap) {
 			int gap_sample;

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

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

 			gap_sample = LIRC_SPACE(dev->gap_duration);
 			lirc_buffer_write(dev->lirc_dev->buf,
 					  (unsigned char *)&gap_sample);
 			dev->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->lirc_dev->buf,
 			  (unsigned char *) &sample);

 	wake_up(&dev->lirc_dev->buf->wait_poll);
 }

 static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
 				   size_t n, loff_t *ppos)
 {
 	struct rc_dev *dev = file->private_data;
 	unsigned int *txbuf = NULL;
 	struct ir_raw_event *raw = NULL;
 	ssize_t ret = -EINVAL;
 	size_t count;
 	ktime_t start;
 	s64 towait;
 	unsigned int duration = 0; /* signal duration in us */
 	int i;

 	start = ktime_get();

 	if (!dev->tx_ir) {
 		ret = -EINVAL;
 		goto out;
 	}

 	if (dev->send_mode == LIRC_MODE_SCANCODE) {
 		struct lirc_scancode scan;

 		if (n != sizeof(scan))
 			return -EINVAL;

 		if (copy_from_user(&scan, buf, sizeof(scan)))
 			return -EFAULT;

 		if (scan.flags || scan.keycode || scan.timestamp)
 			return -EINVAL;

 		raw = kmalloc_array(LIRCBUF_SIZE, sizeof(*raw), GFP_KERNEL);
 		if (!raw)
 			return -ENOMEM;

 		ret = ir_raw_encode_scancode(scan.rc_proto, scan.scancode,
 					     raw, LIRCBUF_SIZE);
 		if (ret < 0)
 			goto out;

 		count = ret;

 		txbuf = kmalloc_array(count, sizeof(unsigned int), GFP_KERNEL);
 		if (!txbuf) {
 			ret = -ENOMEM;
 			goto out;
 		}

 		for (i = 0; i < count; i++)
 			/* Convert from NS to US */
 			txbuf[i] = DIV_ROUND_UP(raw[i].duration, 1000);

 		if (dev->s_tx_carrier) {
 			int carrier = ir_raw_encode_carrier(scan.rc_proto);

 			if (carrier > 0)
 				dev->s_tx_carrier(dev, carrier);
 		}
 	} else {
 		if (n < sizeof(unsigned int) || n % sizeof(unsigned int))
 			return -EINVAL;

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

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

 	for (i = 0; i < count; i++) {
 		if (txbuf[i] > IR_MAX_DURATION / 1000 - duration || !txbuf[i]) {
 			ret = -EINVAL;
 			goto out;
 		}

 		duration += txbuf[i];
 	}

 	ret = dev->tx_ir(dev, txbuf, count);
 	if (ret < 0)
 		goto out;

 	if (dev->send_mode == LIRC_MODE_SCANCODE) {
 		ret = n;
 	} else {
 		for (duration = i = 0; i < ret; i++)
 			duration += txbuf[i];

 		ret *= sizeof(unsigned int);

 		/*
 		 * The lircd gap calculation expects the write function to
 		 * wait for the actual IR signal to be transmitted before
 		 * returning.
 		 */
 		towait = ktime_us_delta(ktime_add_us(start, duration),
 					ktime_get());
 		if (towait > 0) {
 			set_current_state(TASK_INTERRUPTIBLE);
 			schedule_timeout(usecs_to_jiffies(towait));
 		}
 	}

 out:
 	kfree(txbuf);
 	kfree(raw);
 	return ret;
 }

 static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
 			unsigned long arg)
 {
 	struct rc_dev *dev = filep->private_data;
 	u32 __user *argp = (u32 __user *)(arg);
 	int ret = 0;
 	__u32 val = 0, tmp;

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

 	switch (cmd) {

 	/* mode support */
 	case LIRC_GET_SEND_MODE:
 		if (!dev->tx_ir)
 			return -ENOTTY;

 		val = dev->send_mode;
 		break;

 	case LIRC_SET_SEND_MODE:
 		if (!dev->tx_ir)
 			return -ENOTTY;

 		if (!(val == LIRC_MODE_PULSE || val == LIRC_MODE_SCANCODE))
 			return -EINVAL;

 		dev->send_mode = val;
 		return 0;

 	/* TX settings */
 	case LIRC_SET_TRANSMITTER_MASK:
 		if (!dev->s_tx_mask)
 			return -ENOTTY;

 		return dev->s_tx_mask(dev, val);

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

 		return dev->s_tx_carrier(dev, val);

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

 		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 -ENOTTY;

 		if (val <= 0)
 			return -EINVAL;

 		return dev->s_rx_carrier_range(dev,
 					       dev->carrier_low,
 					       val);

 	case LIRC_SET_REC_CARRIER_RANGE:
 		if (!dev->s_rx_carrier_range)
 			return -ENOTTY;

 		if (val <= 0)
 			return -EINVAL;

 		dev->carrier_low = val;
 		return 0;

 	case LIRC_GET_REC_RESOLUTION:
 		if (!dev->rx_resolution)
 			return -ENOTTY;

 		val = dev->rx_resolution / 1000;
 		break;

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

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

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

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

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

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

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

 		/* Check for multiply overflow */
 		if (val > U32_MAX / 1000)
 			return -EINVAL;

 		tmp = val * 1000;

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

 		if (dev->s_timeout)
 			ret = dev->s_timeout(dev, tmp);
 		if (!ret)
 			dev->timeout = tmp;
 		break;

 	case LIRC_SET_REC_TIMEOUT_REPORTS:
 		if (!dev->timeout)
 			return -ENOTTY;

 		dev->send_timeout_reports = !!val;
 		break;

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

 	if (_IOC_DIR(cmd) & _IOC_READ)
 		ret = put_user(val, argp);

 	return ret;
 }

 static const 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,
 };

 int ir_lirc_register(struct rc_dev *dev)
 {
 	struct lirc_dev *ldev;
 	int rc = -ENOMEM;
 	unsigned long features = 0;

 	ldev = lirc_allocate_device();
 	if (!ldev)
 		return rc;

 	if (dev->driver_type != RC_DRIVER_IR_RAW_TX) {
 		features |= LIRC_CAN_REC_MODE2;
 		if (dev->rx_resolution)
 			features |= LIRC_CAN_GET_REC_RESOLUTION;
 	}

 	if (dev->tx_ir) {
 		features |= LIRC_CAN_SEND_PULSE | LIRC_CAN_SEND_SCANCODE;
 		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(ldev->name, sizeof(ldev->name), "ir-lirc-codec (%s)",
 		 dev->driver_name);
 	ldev->features = features;
 	ldev->buf = NULL;
 	ldev->chunk_size = sizeof(int);
 	ldev->buffer_size = LIRCBUF_SIZE;
 	ldev->fops = &lirc_fops;
 	ldev->dev.parent = &dev->dev;
 	ldev->rdev = dev;
 	ldev->owner = THIS_MODULE;

 	rc = lirc_register_device(ldev);
 	if (rc < 0)
 		goto out;

 	dev->send_mode = LIRC_MODE_PULSE;
 	dev->lirc_dev = ldev;
 	return 0;

 out:
 	lirc_free_device(ldev);
 	return rc;
 }

 void ir_lirc_unregister(struct rc_dev *dev)
 {
 	lirc_unregister_device(dev->lirc_dev);
 	dev->lirc_dev = NULL;
 }
	/* 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_raw_event() - Send raw IR data to lirc to be relayed to userspace
	*
	* @dev: the struct rc_dev descriptor of the device
	* @ev: the struct ir_raw_event descriptor of the pulse/space
	*/
	void ir_lirc_raw_event(struct rc_dev *dev, struct ir_raw_event ev)
	{
	int sample;

	/* Packet start */
	if (ev.reset) {
	/* Userspace expects a long space event before the start of
	* the signal to use as a sync. This may be done with repeat
	* packets and normal samples. But if a reset has been sent
	* then we assume that a long time has passed, so we send a
	* space with the maximum time value. */
	sample = LIRC_SPACE(LIRC_VALUE_MASK);
	IR_dprintk(2, "delivering reset sync space to lirc_dev\n");

	/* Carrier reports */
	} else 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 (dev->gap)
	return;

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

	if (!dev->send_timeout_reports)
	return;

	sample = LIRC_TIMEOUT(ev.duration / 1000);
	IR_dprintk(2, "timeout report (duration: %d)\n", sample);

	/* Normal sample */
	} else {

	if (dev->gap) {
	int gap_sample;

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

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

	gap_sample = LIRC_SPACE(dev->gap_duration);
	lirc_buffer_write(dev->lirc_dev->buf,
	(unsigned char *)&gap_sample);
	dev->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->lirc_dev->buf,
	(unsigned char *) &sample);

	wake_up(&dev->lirc_dev->buf->wait_poll);
	}

	static ssize_t ir_lirc_transmit_ir(struct file file, const char __user buf,
	size_t n, loff_t *ppos)
	{
	struct rc_dev *dev = file->private_data;
	unsigned int *txbuf = NULL;
	struct ir_raw_event *raw = NULL;
	ssize_t ret = -EINVAL;
	size_t count;
	ktime_t start;
	s64 towait;
	unsigned int duration = 0; /* signal duration in us */
	int i;

	start = ktime_get();

	if (!dev->tx_ir) {
	ret = -EINVAL;
	goto out;
	}

	if (dev->send_mode == LIRC_MODE_SCANCODE) {
	struct lirc_scancode scan;

	if (n != sizeof(scan))
	return -EINVAL;

	if (copy_from_user(&scan, buf, sizeof(scan)))
	return -EFAULT;

	if (scan.flags \|\| scan.keycode \|\| scan.timestamp)
	return -EINVAL;

	raw = kmalloc_array(LIRCBUF_SIZE, sizeof(*raw), GFP_KERNEL);
	if (!raw)
	return -ENOMEM;

	ret = ir_raw_encode_scancode(scan.rc_proto, scan.scancode,
	raw, LIRCBUF_SIZE);
	if (ret < 0)
	goto out;

	count = ret;

	txbuf = kmalloc_array(count, sizeof(unsigned int), GFP_KERNEL);
	if (!txbuf) {
	ret = -ENOMEM;
	goto out;
	}

	for (i = 0; i < count; i++)
	/* Convert from NS to US */
	txbuf[i] = DIV_ROUND_UP(raw[i].duration, 1000);

	if (dev->s_tx_carrier) {
	int carrier = ir_raw_encode_carrier(scan.rc_proto);

	if (carrier > 0)
	dev->s_tx_carrier(dev, carrier);
	}
	} else {
	if (n < sizeof(unsigned int) \|\| n % sizeof(unsigned int))
	return -EINVAL;

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

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

	for (i = 0; i < count; i++) {
	if (txbuf[i] > IR_MAX_DURATION / 1000 - duration \|\| !txbuf[i]) {
	ret = -EINVAL;
	goto out;
	}

	duration += txbuf[i];
	}

	ret = dev->tx_ir(dev, txbuf, count);
	if (ret < 0)
	goto out;

	if (dev->send_mode == LIRC_MODE_SCANCODE) {
	ret = n;
	} else {
	for (duration = i = 0; i < ret; i++)
	duration += txbuf[i];

	ret *= sizeof(unsigned int);

	/*
	* The lircd gap calculation expects the write function to
	* wait for the actual IR signal to be transmitted before
	* returning.
	*/
	towait = ktime_us_delta(ktime_add_us(start, duration),
	ktime_get());
	if (towait > 0) {
	set_current_state(TASK_INTERRUPTIBLE);
	schedule_timeout(usecs_to_jiffies(towait));
	}
	}

	out:
	kfree(txbuf);
	kfree(raw);
	return ret;
	}

	static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
	unsigned long arg)
	{
	struct rc_dev *dev = filep->private_data;
	u32 __user argp = (u32 __user )(arg);
	int ret = 0;
	__u32 val = 0, tmp;

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

	switch (cmd) {

	/* mode support */
	case LIRC_GET_SEND_MODE:
	if (!dev->tx_ir)
	return -ENOTTY;

	val = dev->send_mode;
	break;

	case LIRC_SET_SEND_MODE:
	if (!dev->tx_ir)
	return -ENOTTY;

	if (!(val == LIRC_MODE_PULSE \|\| val == LIRC_MODE_SCANCODE))
	return -EINVAL;

	dev->send_mode = val;
	return 0;

	/* TX settings */
	case LIRC_SET_TRANSMITTER_MASK:
	if (!dev->s_tx_mask)
	return -ENOTTY;

	return dev->s_tx_mask(dev, val);

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

	return dev->s_tx_carrier(dev, val);

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

	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 -ENOTTY;

	if (val <= 0)
	return -EINVAL;

	return dev->s_rx_carrier_range(dev,
	dev->carrier_low,
	val);

	case LIRC_SET_REC_CARRIER_RANGE:
	if (!dev->s_rx_carrier_range)
	return -ENOTTY;

	if (val <= 0)
	return -EINVAL;

	dev->carrier_low = val;
	return 0;

	case LIRC_GET_REC_RESOLUTION:
	if (!dev->rx_resolution)
	return -ENOTTY;

	val = dev->rx_resolution / 1000;
	break;

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

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

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

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

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

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

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

	/* Check for multiply overflow */
	if (val > U32_MAX / 1000)
	return -EINVAL;

	tmp = val * 1000;

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

	if (dev->s_timeout)
	ret = dev->s_timeout(dev, tmp);
	if (!ret)
	dev->timeout = tmp;
	break;

	case LIRC_SET_REC_TIMEOUT_REPORTS:
	if (!dev->timeout)
	return -ENOTTY;

	dev->send_timeout_reports = !!val;
	break;

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

	if (_IOC_DIR(cmd) & _IOC_READ)
	ret = put_user(val, argp);

	return ret;
	}

	static const 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,
	};

	int ir_lirc_register(struct rc_dev *dev)
	{
	struct lirc_dev *ldev;
	int rc = -ENOMEM;
	unsigned long features = 0;

	ldev = lirc_allocate_device();
	if (!ldev)
	return rc;

	if (dev->driver_type != RC_DRIVER_IR_RAW_TX) {
	features \|= LIRC_CAN_REC_MODE2;
	if (dev->rx_resolution)
	features \|= LIRC_CAN_GET_REC_RESOLUTION;
	}

	if (dev->tx_ir) {
	features \|= LIRC_CAN_SEND_PULSE \| LIRC_CAN_SEND_SCANCODE;
	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(ldev->name, sizeof(ldev->name), "ir-lirc-codec (%s)",
	dev->driver_name);
	ldev->features = features;
	ldev->buf = NULL;
	ldev->chunk_size = sizeof(int);
	ldev->buffer_size = LIRCBUF_SIZE;
	ldev->fops = &lirc_fops;
	ldev->dev.parent = &dev->dev;
	ldev->rdev = dev;
	ldev->owner = THIS_MODULE;

	rc = lirc_register_device(ldev);
	if (rc < 0)
	goto out;

	dev->send_mode = LIRC_MODE_PULSE;
	dev->lirc_dev = ldev;
	return 0;

	out:
	lirc_free_device(ldev);
	return rc;
	}

	void ir_lirc_unregister(struct rc_dev *dev)
	{
	lirc_unregister_device(dev->lirc_dev);
	dev->lirc_dev = NULL;
	}