| /* |
| * 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. |
| * |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/sched/signal.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/rc-core.h> |
| #include <media/lirc.h> |
| #include <media/lirc_dev.h> |
| |
| static bool 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 cdev *cdev; |
| |
| struct task_struct *task; |
| long jiffies_to_wait; |
| }; |
| |
| static DEFINE_MUTEX(lirc_dev_lock); |
| |
| static struct irctl *irctls[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) |
| { |
| 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) |
| { |
| int res; |
| int got_data = -1; |
| |
| if (!ir->d.add_to_buf) |
| return 0; |
| |
| /* |
| * service the device as long as it is returning |
| * data and we have space |
| */ |
| do { |
| got_data++; |
| res = ir->d.add_to_buf(ir->d.data, ir->buf); |
| } while (!res); |
| |
| if (res == -ENODEV) |
| kthread_stop(ir->task); |
| |
| return got_data ? 0 : res; |
| } |
| |
| /* main function of the polling thread |
| */ |
| static int lirc_thread(void *irctl) |
| { |
| struct irctl *ir = irctl; |
| |
| 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()); |
| |
| return 0; |
| } |
| |
| |
| static const 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, |
| .open = lirc_dev_fop_open, |
| .release = lirc_dev_fop_close, |
| .llseek = noop_llseek, |
| }; |
| |
| static int lirc_cdev_add(struct irctl *ir) |
| { |
| struct lirc_driver *d = &ir->d; |
| struct cdev *cdev; |
| int retval; |
| |
| cdev = cdev_alloc(); |
| if (!cdev) |
| return -ENOMEM; |
| |
| if (d->fops) { |
| cdev->ops = d->fops; |
| cdev->owner = d->owner; |
| } else { |
| cdev->ops = &lirc_dev_fops; |
| cdev->owner = THIS_MODULE; |
| } |
| retval = kobject_set_name(&cdev->kobj, "lirc%d", d->minor); |
| if (retval) |
| goto err_out; |
| |
| retval = cdev_add(cdev, MKDEV(MAJOR(lirc_base_dev), d->minor), 1); |
| if (retval) |
| goto err_out; |
| |
| ir->cdev = cdev; |
| |
| return 0; |
| |
| err_out: |
| cdev_del(cdev); |
| return retval; |
| } |
| |
| static int lirc_allocate_buffer(struct irctl *ir) |
| { |
| int err = 0; |
| int bytes_in_key; |
| unsigned int chunk_size; |
| unsigned int buffer_size; |
| struct lirc_driver *d = &ir->d; |
| |
| mutex_lock(&lirc_dev_lock); |
| |
| 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; |
| } |
| |
| err = lirc_buffer_init(ir->buf, chunk_size, buffer_size); |
| if (err) { |
| kfree(ir->buf); |
| goto out; |
| } |
| } |
| ir->chunk_size = ir->buf->chunk_size; |
| |
| out: |
| mutex_unlock(&lirc_dev_lock); |
| |
| return err; |
| } |
| |
| static int lirc_allocate_driver(struct lirc_driver *d) |
| { |
| struct irctl *ir; |
| int minor; |
| int err; |
| |
| if (!d) { |
| pr_err("driver pointer must be not NULL!\n"); |
| return -EBADRQC; |
| } |
| |
| if (!d->dev) { |
| pr_err("dev pointer not filled in!\n"); |
| return -EINVAL; |
| } |
| |
| if (d->minor >= MAX_IRCTL_DEVICES) { |
| dev_err(d->dev, "minor must be between 0 and %d!\n", |
| MAX_IRCTL_DEVICES - 1); |
| return -EBADRQC; |
| } |
| |
| if (d->code_length < 1 || d->code_length > (BUFLEN * 8)) { |
| dev_err(d->dev, "code length must be less than %d bits\n", |
| BUFLEN * 8); |
| return -EBADRQC; |
| } |
| |
| if (d->sample_rate) { |
| if (2 > d->sample_rate || HZ < d->sample_rate) { |
| dev_err(d->dev, "invalid %d sample rate\n", |
| d->sample_rate); |
| return -EBADRQC; |
| } |
| if (!d->add_to_buf) { |
| dev_err(d->dev, "add_to_buf not set\n"); |
| return -EBADRQC; |
| } |
| } else if (!d->rbuf && !(d->fops && d->fops->read && |
| d->fops->poll && d->fops->unlocked_ioctl)) { |
| dev_err(d->dev, "undefined read, poll, ioctl\n"); |
| return -EBADRQC; |
| } |
| |
| 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 (minor == MAX_IRCTL_DEVICES) { |
| dev_err(d->dev, "no free slots for drivers!\n"); |
| err = -ENOMEM; |
| goto out_lock; |
| } |
| } else if (irctls[minor]) { |
| dev_err(d->dev, "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; |
| |
| /* some safety check 8-) */ |
| d->name[sizeof(d->name)-1] = '\0'; |
| |
| 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) { |
| ir->jiffies_to_wait = HZ / 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, "cannot run thread for minor = %d\n", |
| d->minor); |
| err = -ECHILD; |
| goto out_sysfs; |
| } |
| } else { |
| /* it means - wait for external event in task queue */ |
| ir->jiffies_to_wait = 0; |
| } |
| |
| 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); |
| |
| return err; |
| } |
| |
| int lirc_register_driver(struct lirc_driver *d) |
| { |
| int minor, err = 0; |
| |
| minor = lirc_allocate_driver(d); |
| if (minor < 0) |
| return minor; |
| |
| if (LIRC_CAN_REC(d->features)) { |
| err = lirc_allocate_buffer(irctls[minor]); |
| if (err) |
| lirc_unregister_driver(minor); |
| } |
| |
| return err ? err : minor; |
| } |
| EXPORT_SYMBOL(lirc_register_driver); |
| |
| int lirc_unregister_driver(int minor) |
| { |
| struct irctl *ir; |
| struct cdev *cdev; |
| |
| if (minor < 0 || minor >= MAX_IRCTL_DEVICES) { |
| pr_err("minor (%d) must be between 0 and %d!\n", |
| minor, MAX_IRCTL_DEVICES - 1); |
| return -EBADRQC; |
| } |
| |
| ir = irctls[minor]; |
| if (!ir) { |
| pr_err("failed to get irctl\n"); |
| return -ENOENT; |
| } |
| |
| cdev = ir->cdev; |
| |
| mutex_lock(&lirc_dev_lock); |
| |
| if (ir->d.minor != minor) { |
| dev_err(ir->d.dev, "lirc_dev: minor %d device not registered\n", |
| 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); |
| |
| if (ir->d.set_use_dec) |
| 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) { |
| pr_err("open result for %d is -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; |
| } |
| |
| if (ir->d.rdev) { |
| retval = rc_open(ir->d.rdev); |
| if (retval) |
| goto error; |
| } |
| |
| cdev = ir->cdev; |
| if (try_module_get(cdev->owner)) { |
| ir->open++; |
| if (ir->d.set_use_inc) |
| retval = ir->d.set_use_inc(ir->d.data); |
| |
| if (retval) { |
| module_put(cdev->owner); |
| ir->open--; |
| } else if (ir->buf) { |
| lirc_buffer_clear(ir->buf); |
| } |
| if (ir->task) |
| wake_up_process(ir->task); |
| } |
| |
| error: |
| 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; |
| int ret; |
| |
| if (!ir) { |
| pr_err("called with invalid irctl\n"); |
| return -EINVAL; |
| } |
| |
| cdev = ir->cdev; |
| |
| ret = mutex_lock_killable(&lirc_dev_lock); |
| WARN_ON(ret); |
| |
| rc_close(ir->d.rdev); |
| |
| ir->open--; |
| if (ir->attached) { |
| if (ir->d.set_use_dec) |
| 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); |
| } |
| |
| if (!ret) |
| 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_inode(file))]; |
| unsigned int ret; |
| |
| if (!ir) { |
| pr_err("called with invalid irctl\n"); |
| return POLLERR; |
| } |
| |
| if (!ir->attached) |
| return POLLERR; |
| |
| if (ir->buf) { |
| poll_wait(file, &ir->buf->wait_poll, wait); |
| |
| 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_inode(file))]; |
| |
| if (!ir) { |
| pr_err("no irctl found!\n"); |
| 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_err(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 __user *)arg); |
| break; |
| case LIRC_GET_REC_MODE: |
| if (!LIRC_CAN_REC(ir->d.features)) { |
| result = -ENOTTY; |
| break; |
| } |
| |
| result = put_user(LIRC_REC2MODE |
| (ir->d.features & LIRC_CAN_REC_MASK), |
| (__u32 __user *)arg); |
| break; |
| case LIRC_SET_REC_MODE: |
| if (!LIRC_CAN_REC(ir->d.features)) { |
| result = -ENOTTY; |
| break; |
| } |
| |
| result = get_user(mode, (__u32 __user *)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 __user *)arg); |
| break; |
| case LIRC_GET_MIN_TIMEOUT: |
| if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) || |
| ir->d.min_timeout == 0) { |
| result = -ENOTTY; |
| break; |
| } |
| |
| result = put_user(ir->d.min_timeout, (__u32 __user *)arg); |
| break; |
| case LIRC_GET_MAX_TIMEOUT: |
| if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) || |
| ir->d.max_timeout == 0) { |
| result = -ENOTTY; |
| break; |
| } |
| |
| result = put_user(ir->d.max_timeout, (__u32 __user *)arg); |
| break; |
| default: |
| result = -EINVAL; |
| } |
| |
| mutex_unlock(&ir->irctl_lock); |
| |
| return result; |
| } |
| EXPORT_SYMBOL(lirc_dev_fop_ioctl); |
| |
| ssize_t lirc_dev_fop_read(struct file *file, |
| char __user *buffer, |
| size_t length, |
| loff_t *ppos) |
| { |
| struct irctl *ir = irctls[iminor(file_inode(file))]; |
| unsigned char *buf; |
| int ret = 0, written = 0; |
| DECLARE_WAITQUEUE(wait, current); |
| |
| if (!ir) { |
| pr_err("called with invalid irctl\n"); |
| return -ENODEV; |
| } |
| |
| if (!LIRC_CAN_REC(ir->d.features)) |
| return -EINVAL; |
| |
| 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)) { |
| ret = -ERESTARTSYS; |
| goto out_unlocked; |
| } |
| if (!ir->attached) { |
| ret = -ENODEV; |
| goto out_locked; |
| } |
| |
| if (length % ir->chunk_size) { |
| ret = -EINVAL; |
| goto out_locked; |
| } |
| |
| /* |
| * 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); |
| |
| /* |
| * 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); |
| set_current_state(TASK_INTERRUPTIBLE); |
| schedule(); |
| set_current_state(TASK_RUNNING); |
| |
| if (mutex_lock_interruptible(&ir->irctl_lock)) { |
| ret = -ERESTARTSYS; |
| remove_wait_queue(&ir->buf->wait_poll, &wait); |
| goto out_unlocked; |
| } |
| |
| if (!ir->attached) { |
| ret = -ENODEV; |
| goto out_locked; |
| } |
| } else { |
| lirc_buffer_read(ir->buf, buf); |
| ret = copy_to_user((void __user *)buffer+written, buf, |
| ir->buf->chunk_size); |
| if (!ret) |
| written += ir->buf->chunk_size; |
| else |
| ret = -EFAULT; |
| } |
| } |
| |
| remove_wait_queue(&ir->buf->wait_poll, &wait); |
| |
| out_locked: |
| mutex_unlock(&ir->irctl_lock); |
| |
| out_unlocked: |
| kfree(buf); |
| |
| return ret ? ret : written; |
| } |
| EXPORT_SYMBOL(lirc_dev_fop_read); |
| |
| void *lirc_get_pdata(struct file *file) |
| { |
| return irctls[iminor(file_inode(file))]->d.data; |
| } |
| EXPORT_SYMBOL(lirc_get_pdata); |
| |
| |
| ssize_t lirc_dev_fop_write(struct file *file, const char __user *buffer, |
| size_t length, loff_t *ppos) |
| { |
| struct irctl *ir = irctls[iminor(file_inode(file))]; |
| |
| if (!ir) { |
| pr_err("called with invalid irctl\n"); |
| return -ENODEV; |
| } |
| |
| 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)) { |
| pr_err("class_create failed\n"); |
| return PTR_ERR(lirc_class); |
| } |
| |
| retval = alloc_chrdev_region(&lirc_base_dev, 0, MAX_IRCTL_DEVICES, |
| IRCTL_DEV_NAME); |
| if (retval) { |
| class_destroy(lirc_class); |
| pr_err("alloc_chrdev_region failed\n"); |
| return retval; |
| } |
| |
| |
| pr_info("IR Remote Control driver registered, major %d\n", |
| MAJOR(lirc_base_dev)); |
| |
| return 0; |
| } |
| |
| |
| |
| static void __exit lirc_dev_exit(void) |
| { |
| class_destroy(lirc_class); |
| unregister_chrdev_region(lirc_base_dev, MAX_IRCTL_DEVICES); |
| pr_info("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"); |