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path: root/drivers/media/IR/lirc_dev.c
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Diffstat (limited to 'drivers/media/IR/lirc_dev.c')
-rw-r--r--drivers/media/IR/lirc_dev.c811
1 files changed, 0 insertions, 811 deletions
diff --git a/drivers/media/IR/lirc_dev.c b/drivers/media/IR/lirc_dev.c
deleted file mode 100644
index 8418b14ee4d2..000000000000
--- a/drivers/media/IR/lirc_dev.c
+++ /dev/null
@@ -1,811 +0,0 @@
-/*
- * LIRC base driver
- *
- * by Artur Lipowski <alipowski@interia.pl>
- *
- * 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/kernel.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/ioctl.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/completion.h>
-#include <linux/mutex.h>
-#include <linux/wait.h>
-#include <linux/unistd.h>
-#include <linux/kthread.h>
-#include <linux/bitops.h>
-#include <linux/device.h>
-#include <linux/cdev.h>
-
-#include <media/lirc.h>
-#include <media/lirc_dev.h>
-
-static int debug;
-
-#define IRCTL_DEV_NAME "BaseRemoteCtl"
-#define NOPLUG -1
-#define LOGHEAD "lirc_dev (%s[%d]): "
-
-static dev_t lirc_base_dev;
-
-struct irctl {
- struct lirc_driver d;
- int attached;
- int open;
-
- struct mutex irctl_lock;
- struct lirc_buffer *buf;
- unsigned int chunk_size;
-
- struct task_struct *task;
- long jiffies_to_wait;
-};
-
-static DEFINE_MUTEX(lirc_dev_lock);
-
-static struct irctl *irctls[MAX_IRCTL_DEVICES];
-static struct cdev cdevs[MAX_IRCTL_DEVICES];
-
-/* Only used for sysfs but defined to void otherwise */
-static struct class *lirc_class;
-
-/* helper function
- * initializes the irctl structure
- */
-static void lirc_irctl_init(struct irctl *ir)
-{
- mutex_init(&ir->irctl_lock);
- ir->d.minor = NOPLUG;
-}
-
-static void lirc_irctl_cleanup(struct irctl *ir)
-{
- dev_dbg(ir->d.dev, LOGHEAD "cleaning up\n", ir->d.name, ir->d.minor);
-
- device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), ir->d.minor));
-
- if (ir->buf != ir->d.rbuf) {
- lirc_buffer_free(ir->buf);
- kfree(ir->buf);
- }
- ir->buf = NULL;
-}
-
-/* helper function
- * reads key codes from driver and puts them into buffer
- * returns 0 on success
- */
-static int lirc_add_to_buf(struct irctl *ir)
-{
- if (ir->d.add_to_buf) {
- int res = -ENODATA;
- int got_data = 0;
-
- /*
- * service the device as long as it is returning
- * data and we have space
- */
-get_data:
- res = ir->d.add_to_buf(ir->d.data, ir->buf);
- if (res == 0) {
- got_data++;
- goto get_data;
- }
-
- if (res == -ENODEV)
- kthread_stop(ir->task);
-
- return got_data ? 0 : res;
- }
-
- return 0;
-}
-
-/* main function of the polling thread
- */
-static int lirc_thread(void *irctl)
-{
- struct irctl *ir = irctl;
-
- dev_dbg(ir->d.dev, LOGHEAD "poll thread started\n",
- ir->d.name, ir->d.minor);
-
- do {
- if (ir->open) {
- if (ir->jiffies_to_wait) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(ir->jiffies_to_wait);
- }
- if (kthread_should_stop())
- break;
- if (!lirc_add_to_buf(ir))
- wake_up_interruptible(&ir->buf->wait_poll);
- } else {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule();
- }
- } while (!kthread_should_stop());
-
- dev_dbg(ir->d.dev, LOGHEAD "poll thread ended\n",
- ir->d.name, ir->d.minor);
-
- return 0;
-}
-
-
-static struct file_operations lirc_dev_fops = {
- .owner = THIS_MODULE,
- .read = lirc_dev_fop_read,
- .write = lirc_dev_fop_write,
- .poll = lirc_dev_fop_poll,
- .unlocked_ioctl = lirc_dev_fop_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = lirc_dev_fop_ioctl,
-#endif
- .open = lirc_dev_fop_open,
- .release = lirc_dev_fop_close,
- .llseek = noop_llseek,
-};
-
-static int lirc_cdev_add(struct irctl *ir)
-{
- int retval;
- struct lirc_driver *d = &ir->d;
- struct cdev *cdev = &cdevs[d->minor];
-
- if (d->fops) {
- cdev_init(cdev, d->fops);
- cdev->owner = d->owner;
- } else {
- cdev_init(cdev, &lirc_dev_fops);
- cdev->owner = THIS_MODULE;
- }
- kobject_set_name(&cdev->kobj, "lirc%d", d->minor);
-
- retval = cdev_add(cdev, MKDEV(MAJOR(lirc_base_dev), d->minor), 1);
- if (retval)
- kobject_put(&cdev->kobj);
-
- return retval;
-}
-
-int lirc_register_driver(struct lirc_driver *d)
-{
- struct irctl *ir;
- int minor;
- int bytes_in_key;
- unsigned int chunk_size;
- unsigned int buffer_size;
- int err;
-
- if (!d) {
- printk(KERN_ERR "lirc_dev: lirc_register_driver: "
- "driver pointer must be not NULL!\n");
- err = -EBADRQC;
- goto out;
- }
-
- if (!d->dev) {
- printk(KERN_ERR "%s: dev pointer not filled in!\n", __func__);
- err = -EINVAL;
- goto out;
- }
-
- if (MAX_IRCTL_DEVICES <= d->minor) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "\"minor\" must be between 0 and %d (%d)!\n",
- MAX_IRCTL_DEVICES-1, d->minor);
- err = -EBADRQC;
- goto out;
- }
-
- if (1 > d->code_length || (BUFLEN * 8) < d->code_length) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "code length in bits for minor (%d) "
- "must be less than %d!\n",
- d->minor, BUFLEN * 8);
- err = -EBADRQC;
- goto out;
- }
-
- dev_dbg(d->dev, "lirc_dev: lirc_register_driver: sample_rate: %d\n",
- d->sample_rate);
- if (d->sample_rate) {
- if (2 > d->sample_rate || HZ < d->sample_rate) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "sample_rate must be between 2 and %d!\n", HZ);
- err = -EBADRQC;
- goto out;
- }
- if (!d->add_to_buf) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "add_to_buf cannot be NULL when "
- "sample_rate is set\n");
- err = -EBADRQC;
- goto out;
- }
- } else if (!(d->fops && d->fops->read) && !d->rbuf) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "fops->read and rbuf cannot all be NULL!\n");
- err = -EBADRQC;
- goto out;
- } else if (!d->rbuf) {
- if (!(d->fops && d->fops->read && d->fops->poll &&
- d->fops->unlocked_ioctl)) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "neither read, poll nor unlocked_ioctl can be NULL!\n");
- err = -EBADRQC;
- goto out;
- }
- }
-
- mutex_lock(&lirc_dev_lock);
-
- minor = d->minor;
-
- if (minor < 0) {
- /* find first free slot for driver */
- for (minor = 0; minor < MAX_IRCTL_DEVICES; minor++)
- if (!irctls[minor])
- break;
- if (MAX_IRCTL_DEVICES == minor) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "no free slots for drivers!\n");
- err = -ENOMEM;
- goto out_lock;
- }
- } else if (irctls[minor]) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "minor (%d) just registered!\n", minor);
- err = -EBUSY;
- goto out_lock;
- }
-
- ir = kzalloc(sizeof(struct irctl), GFP_KERNEL);
- if (!ir) {
- err = -ENOMEM;
- goto out_lock;
- }
- lirc_irctl_init(ir);
- irctls[minor] = ir;
- d->minor = minor;
-
- if (d->sample_rate) {
- ir->jiffies_to_wait = HZ / d->sample_rate;
- } else {
- /* it means - wait for external event in task queue */
- ir->jiffies_to_wait = 0;
- }
-
- /* some safety check 8-) */
- d->name[sizeof(d->name)-1] = '\0';
-
- bytes_in_key = BITS_TO_LONGS(d->code_length) +
- (d->code_length % 8 ? 1 : 0);
- buffer_size = d->buffer_size ? d->buffer_size : BUFLEN / bytes_in_key;
- chunk_size = d->chunk_size ? d->chunk_size : bytes_in_key;
-
- if (d->rbuf) {
- ir->buf = d->rbuf;
- } else {
- ir->buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
- if (!ir->buf) {
- err = -ENOMEM;
- goto out_lock;
- }
- err = lirc_buffer_init(ir->buf, chunk_size, buffer_size);
- if (err) {
- kfree(ir->buf);
- goto out_lock;
- }
- }
- ir->chunk_size = ir->buf->chunk_size;
-
- if (d->features == 0)
- d->features = LIRC_CAN_REC_LIRCCODE;
-
- ir->d = *d;
-
- device_create(lirc_class, ir->d.dev,
- MKDEV(MAJOR(lirc_base_dev), ir->d.minor), NULL,
- "lirc%u", ir->d.minor);
-
- if (d->sample_rate) {
- /* try to fire up polling thread */
- ir->task = kthread_run(lirc_thread, (void *)ir, "lirc_dev");
- if (IS_ERR(ir->task)) {
- dev_err(d->dev, "lirc_dev: lirc_register_driver: "
- "cannot run poll thread for minor = %d\n",
- d->minor);
- err = -ECHILD;
- goto out_sysfs;
- }
- }
-
- err = lirc_cdev_add(ir);
- if (err)
- goto out_sysfs;
-
- ir->attached = 1;
- mutex_unlock(&lirc_dev_lock);
-
- dev_info(ir->d.dev, "lirc_dev: driver %s registered at minor = %d\n",
- ir->d.name, ir->d.minor);
- return minor;
-
-out_sysfs:
- device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), ir->d.minor));
-out_lock:
- mutex_unlock(&lirc_dev_lock);
-out:
- return err;
-}
-EXPORT_SYMBOL(lirc_register_driver);
-
-int lirc_unregister_driver(int minor)
-{
- struct irctl *ir;
- struct cdev *cdev;
-
- if (minor < 0 || minor >= MAX_IRCTL_DEVICES) {
- printk(KERN_ERR "lirc_dev: %s: minor (%d) must be between "
- "0 and %d!\n", __func__, minor, MAX_IRCTL_DEVICES-1);
- return -EBADRQC;
- }
-
- ir = irctls[minor];
- if (!ir) {
- printk(KERN_ERR "lirc_dev: %s: failed to get irctl struct "
- "for minor %d!\n", __func__, minor);
- return -ENOENT;
- }
-
- cdev = &cdevs[minor];
-
- mutex_lock(&lirc_dev_lock);
-
- if (ir->d.minor != minor) {
- printk(KERN_ERR "lirc_dev: %s: minor (%d) device not "
- "registered!\n", __func__, minor);
- mutex_unlock(&lirc_dev_lock);
- return -ENOENT;
- }
-
- /* end up polling thread */
- if (ir->task)
- kthread_stop(ir->task);
-
- dev_dbg(ir->d.dev, "lirc_dev: driver %s unregistered from minor = %d\n",
- ir->d.name, ir->d.minor);
-
- ir->attached = 0;
- if (ir->open) {
- dev_dbg(ir->d.dev, LOGHEAD "releasing opened driver\n",
- ir->d.name, ir->d.minor);
- wake_up_interruptible(&ir->buf->wait_poll);
- mutex_lock(&ir->irctl_lock);
- ir->d.set_use_dec(ir->d.data);
- module_put(cdev->owner);
- mutex_unlock(&ir->irctl_lock);
- } else {
- lirc_irctl_cleanup(ir);
- cdev_del(cdev);
- kfree(ir);
- irctls[minor] = NULL;
- }
-
- mutex_unlock(&lirc_dev_lock);
-
- return 0;
-}
-EXPORT_SYMBOL(lirc_unregister_driver);
-
-int lirc_dev_fop_open(struct inode *inode, struct file *file)
-{
- struct irctl *ir;
- struct cdev *cdev;
- int retval = 0;
-
- if (iminor(inode) >= MAX_IRCTL_DEVICES) {
- printk(KERN_WARNING "lirc_dev [%d]: open result = -ENODEV\n",
- iminor(inode));
- return -ENODEV;
- }
-
- if (mutex_lock_interruptible(&lirc_dev_lock))
- return -ERESTARTSYS;
-
- ir = irctls[iminor(inode)];
- if (!ir) {
- retval = -ENODEV;
- goto error;
- }
-
- dev_dbg(ir->d.dev, LOGHEAD "open called\n", ir->d.name, ir->d.minor);
-
- if (ir->d.minor == NOPLUG) {
- retval = -ENODEV;
- goto error;
- }
-
- if (ir->open) {
- retval = -EBUSY;
- goto error;
- }
-
- cdev = &cdevs[iminor(inode)];
- if (try_module_get(cdev->owner)) {
- ir->open++;
- retval = ir->d.set_use_inc(ir->d.data);
-
- if (retval) {
- module_put(cdev->owner);
- ir->open--;
- } else {
- lirc_buffer_clear(ir->buf);
- }
- if (ir->task)
- wake_up_process(ir->task);
- }
-
-error:
- if (ir)
- dev_dbg(ir->d.dev, LOGHEAD "open result = %d\n",
- ir->d.name, ir->d.minor, retval);
-
- mutex_unlock(&lirc_dev_lock);
-
- nonseekable_open(inode, file);
-
- return retval;
-}
-EXPORT_SYMBOL(lirc_dev_fop_open);
-
-int lirc_dev_fop_close(struct inode *inode, struct file *file)
-{
- struct irctl *ir = irctls[iminor(inode)];
- struct cdev *cdev = &cdevs[iminor(inode)];
-
- if (!ir) {
- printk(KERN_ERR "%s: called with invalid irctl\n", __func__);
- return -EINVAL;
- }
-
- dev_dbg(ir->d.dev, LOGHEAD "close called\n", ir->d.name, ir->d.minor);
-
- WARN_ON(mutex_lock_killable(&lirc_dev_lock));
-
- ir->open--;
- if (ir->attached) {
- ir->d.set_use_dec(ir->d.data);
- module_put(cdev->owner);
- } else {
- lirc_irctl_cleanup(ir);
- cdev_del(cdev);
- irctls[ir->d.minor] = NULL;
- kfree(ir);
- }
-
- mutex_unlock(&lirc_dev_lock);
-
- return 0;
-}
-EXPORT_SYMBOL(lirc_dev_fop_close);
-
-unsigned int lirc_dev_fop_poll(struct file *file, poll_table *wait)
-{
- struct irctl *ir = irctls[iminor(file->f_dentry->d_inode)];
- unsigned int ret;
-
- if (!ir) {
- printk(KERN_ERR "%s: called with invalid irctl\n", __func__);
- return POLLERR;
- }
-
- dev_dbg(ir->d.dev, LOGHEAD "poll called\n", ir->d.name, ir->d.minor);
-
- if (!ir->attached) {
- mutex_unlock(&ir->irctl_lock);
- return POLLERR;
- }
-
- poll_wait(file, &ir->buf->wait_poll, wait);
-
- if (ir->buf)
- if (lirc_buffer_empty(ir->buf))
- ret = 0;
- else
- ret = POLLIN | POLLRDNORM;
- else
- ret = POLLERR;
-
- dev_dbg(ir->d.dev, LOGHEAD "poll result = %d\n",
- ir->d.name, ir->d.minor, ret);
-
- return ret;
-}
-EXPORT_SYMBOL(lirc_dev_fop_poll);
-
-long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- __u32 mode;
- int result = 0;
- struct irctl *ir = irctls[iminor(file->f_dentry->d_inode)];
-
- if (!ir) {
- printk(KERN_ERR "lirc_dev: %s: no irctl found!\n", __func__);
- return -ENODEV;
- }
-
- dev_dbg(ir->d.dev, LOGHEAD "ioctl called (0x%x)\n",
- ir->d.name, ir->d.minor, cmd);
-
- if (ir->d.minor == NOPLUG || !ir->attached) {
- dev_dbg(ir->d.dev, LOGHEAD "ioctl result = -ENODEV\n",
- ir->d.name, ir->d.minor);
- return -ENODEV;
- }
-
- mutex_lock(&ir->irctl_lock);
-
- switch (cmd) {
- case LIRC_GET_FEATURES:
- result = put_user(ir->d.features, (__u32 *)arg);
- break;
- case LIRC_GET_REC_MODE:
- if (!(ir->d.features & LIRC_CAN_REC_MASK)) {
- result = -ENOSYS;
- break;
- }
-
- result = put_user(LIRC_REC2MODE
- (ir->d.features & LIRC_CAN_REC_MASK),
- (__u32 *)arg);
- break;
- case LIRC_SET_REC_MODE:
- if (!(ir->d.features & LIRC_CAN_REC_MASK)) {
- result = -ENOSYS;
- break;
- }
-
- result = get_user(mode, (__u32 *)arg);
- if (!result && !(LIRC_MODE2REC(mode) & ir->d.features))
- result = -EINVAL;
- /*
- * FIXME: We should actually set the mode somehow but
- * for now, lirc_serial doesn't support mode changing either
- */
- break;
- case LIRC_GET_LENGTH:
- result = put_user(ir->d.code_length, (__u32 *)arg);
- break;
- case LIRC_GET_MIN_TIMEOUT:
- if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) ||
- ir->d.min_timeout == 0) {
- result = -ENOSYS;
- break;
- }
-
- result = put_user(ir->d.min_timeout, (__u32 *)arg);
- break;
- case LIRC_GET_MAX_TIMEOUT:
- if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) ||
- ir->d.max_timeout == 0) {
- result = -ENOSYS;
- break;
- }
-
- result = put_user(ir->d.max_timeout, (__u32 *)arg);
- break;
- default:
- result = -EINVAL;
- }
-
- dev_dbg(ir->d.dev, LOGHEAD "ioctl result = %d\n",
- ir->d.name, ir->d.minor, result);
-
- mutex_unlock(&ir->irctl_lock);
-
- return result;
-}
-EXPORT_SYMBOL(lirc_dev_fop_ioctl);
-
-ssize_t lirc_dev_fop_read(struct file *file,
- char *buffer,
- size_t length,
- loff_t *ppos)
-{
- struct irctl *ir = irctls[iminor(file->f_dentry->d_inode)];
- unsigned char *buf;
- int ret = 0, written = 0;
- DECLARE_WAITQUEUE(wait, current);
-
- if (!ir) {
- printk(KERN_ERR "%s: called with invalid irctl\n", __func__);
- return -ENODEV;
- }
-
- dev_dbg(ir->d.dev, LOGHEAD "read called\n", ir->d.name, ir->d.minor);
-
- buf = kzalloc(ir->chunk_size, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- if (mutex_lock_interruptible(&ir->irctl_lock))
- return -ERESTARTSYS;
- if (!ir->attached) {
- mutex_unlock(&ir->irctl_lock);
- return -ENODEV;
- }
-
- if (length % ir->chunk_size) {
- dev_dbg(ir->d.dev, LOGHEAD "read result = -EINVAL\n",
- ir->d.name, ir->d.minor);
- mutex_unlock(&ir->irctl_lock);
- return -EINVAL;
- }
-
- /*
- * we add ourselves to the task queue before buffer check
- * to avoid losing scan code (in case when queue is awaken somewhere
- * between while condition checking and scheduling)
- */
- add_wait_queue(&ir->buf->wait_poll, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
-
- /*
- * while we didn't provide 'length' bytes, device is opened in blocking
- * mode and 'copy_to_user' is happy, wait for data.
- */
- while (written < length && ret == 0) {
- if (lirc_buffer_empty(ir->buf)) {
- /* According to the read(2) man page, 'written' can be
- * returned as less than 'length', instead of blocking
- * again, returning -EWOULDBLOCK, or returning
- * -ERESTARTSYS */
- if (written)
- break;
- if (file->f_flags & O_NONBLOCK) {
- ret = -EWOULDBLOCK;
- break;
- }
- if (signal_pending(current)) {
- ret = -ERESTARTSYS;
- break;
- }
-
- mutex_unlock(&ir->irctl_lock);
- schedule();
- set_current_state(TASK_INTERRUPTIBLE);
-
- if (mutex_lock_interruptible(&ir->irctl_lock)) {
- ret = -ERESTARTSYS;
- remove_wait_queue(&ir->buf->wait_poll, &wait);
- set_current_state(TASK_RUNNING);
- goto out_unlocked;
- }
-
- if (!ir->attached) {
- ret = -ENODEV;
- break;
- }
- } else {
- lirc_buffer_read(ir->buf, buf);
- ret = copy_to_user((void *)buffer+written, buf,
- ir->buf->chunk_size);
- written += ir->buf->chunk_size;
- }
- }
-
- remove_wait_queue(&ir->buf->wait_poll, &wait);
- set_current_state(TASK_RUNNING);
- mutex_unlock(&ir->irctl_lock);
-
-out_unlocked:
- kfree(buf);
- dev_dbg(ir->d.dev, LOGHEAD "read result = %s (%d)\n",
- ir->d.name, ir->d.minor, ret ? "-EFAULT" : "OK", ret);
-
- return ret ? ret : written;
-}
-EXPORT_SYMBOL(lirc_dev_fop_read);
-
-void *lirc_get_pdata(struct file *file)
-{
- void *data = NULL;
-
- if (file && file->f_dentry && file->f_dentry->d_inode &&
- file->f_dentry->d_inode->i_rdev) {
- struct irctl *ir;
- ir = irctls[iminor(file->f_dentry->d_inode)];
- data = ir->d.data;
- }
-
- return data;
-}
-EXPORT_SYMBOL(lirc_get_pdata);
-
-
-ssize_t lirc_dev_fop_write(struct file *file, const char *buffer,
- size_t length, loff_t *ppos)
-{
- struct irctl *ir = irctls[iminor(file->f_dentry->d_inode)];
-
- if (!ir) {
- printk(KERN_ERR "%s: called with invalid irctl\n", __func__);
- return -ENODEV;
- }
-
- dev_dbg(ir->d.dev, LOGHEAD "write called\n", ir->d.name, ir->d.minor);
-
- if (!ir->attached)
- return -ENODEV;
-
- return -EINVAL;
-}
-EXPORT_SYMBOL(lirc_dev_fop_write);
-
-
-static int __init lirc_dev_init(void)
-{
- int retval;
-
- lirc_class = class_create(THIS_MODULE, "lirc");
- if (IS_ERR(lirc_class)) {
- retval = PTR_ERR(lirc_class);
- printk(KERN_ERR "lirc_dev: class_create failed\n");
- goto error;
- }
-
- retval = alloc_chrdev_region(&lirc_base_dev, 0, MAX_IRCTL_DEVICES,
- IRCTL_DEV_NAME);
- if (retval) {
- class_destroy(lirc_class);
- printk(KERN_ERR "lirc_dev: alloc_chrdev_region failed\n");
- goto error;
- }
-
-
- printk(KERN_INFO "lirc_dev: IR Remote Control driver registered, "
- "major %d \n", MAJOR(lirc_base_dev));
-
-error:
- return retval;
-}
-
-
-
-static void __exit lirc_dev_exit(void)
-{
- class_destroy(lirc_class);
- unregister_chrdev_region(lirc_base_dev, MAX_IRCTL_DEVICES);
- printk(KERN_INFO "lirc_dev: module unloaded\n");
-}
-
-module_init(lirc_dev_init);
-module_exit(lirc_dev_exit);
-
-MODULE_DESCRIPTION("LIRC base driver module");
-MODULE_AUTHOR("Artur Lipowski");
-MODULE_LICENSE("GPL");
-
-module_param(debug, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Enable debugging messages");