diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/lirc/lirc_streamzap.c | 821 |
1 files changed, 821 insertions, 0 deletions
diff --git a/drivers/staging/lirc/lirc_streamzap.c b/drivers/staging/lirc/lirc_streamzap.c new file mode 100644 index 000000000000..5b46ac4dda78 --- /dev/null +++ b/drivers/staging/lirc/lirc_streamzap.c @@ -0,0 +1,821 @@ +/* + * Streamzap Remote Control driver + * + * Copyright (c) 2005 Christoph Bartelmus <lirc@bartelmus.de> + * + * This driver was based on the work of Greg Wickham and Adrian + * Dewhurst. It was substantially rewritten to support correct signal + * gaps and now maintains a delay buffer, which is used to present + * consistent timing behaviour to user space applications. Without the + * delay buffer an ugly hack would be required in lircd, which can + * cause sluggish signal decoding in certain situations. + * + * This driver is based on the USB skeleton driver packaged with the + * kernel; copyright (C) 2001-2003 Greg Kroah-Hartman (greg@kroah.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; 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/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/smp_lock.h> +#include <linux/completion.h> +#include <linux/uaccess.h> +#include <linux/usb.h> + +#include <media/lirc.h> +#include <media/lirc_dev.h> + +#define DRIVER_VERSION "1.28" +#define DRIVER_NAME "lirc_streamzap" +#define DRIVER_DESC "Streamzap Remote Control driver" + +static int debug; + +#define USB_STREAMZAP_VENDOR_ID 0x0e9c +#define USB_STREAMZAP_PRODUCT_ID 0x0000 + +/* Use our own dbg macro */ +#define dprintk(fmt, args...) \ + do { \ + if (debug) \ + printk(KERN_DEBUG DRIVER_NAME "[%d]: " \ + fmt "\n", ## args); \ + } while (0) + +/* table of devices that work with this driver */ +static struct usb_device_id streamzap_table[] = { + /* Streamzap Remote Control */ + { USB_DEVICE(USB_STREAMZAP_VENDOR_ID, USB_STREAMZAP_PRODUCT_ID) }, + /* Terminating entry */ + { } +}; + +MODULE_DEVICE_TABLE(usb, streamzap_table); + +#define STREAMZAP_PULSE_MASK 0xf0 +#define STREAMZAP_SPACE_MASK 0x0f +#define STREAMZAP_TIMEOUT 0xff +#define STREAMZAP_RESOLUTION 256 + +/* number of samples buffered */ +#define STREAMZAP_BUF_LEN 128 + +enum StreamzapDecoderState { + PulseSpace, + FullPulse, + FullSpace, + IgnorePulse +}; + +/* Structure to hold all of our device specific stuff + * + * some remarks regarding locking: + * theoretically this struct can be accessed from three threads: + * + * - from lirc_dev through set_use_inc/set_use_dec + * + * - from the USB layer throuh probe/disconnect/irq + * + * Careful placement of lirc_register_driver/lirc_unregister_driver + * calls will prevent conflicts. lirc_dev makes sure that + * set_use_inc/set_use_dec are not being executed and will not be + * called after lirc_unregister_driver returns. + * + * - by the timer callback + * + * The timer is only running when the device is connected and the + * LIRC device is open. Making sure the timer is deleted by + * set_use_dec will make conflicts impossible. + */ +struct usb_streamzap { + + /* usb */ + /* save off the usb device pointer */ + struct usb_device *udev; + /* the interface for this device */ + struct usb_interface *interface; + + /* buffer & dma */ + unsigned char *buf_in; + dma_addr_t dma_in; + unsigned int buf_in_len; + + struct usb_endpoint_descriptor *endpoint; + + /* IRQ */ + struct urb *urb_in; + + /* lirc */ + struct lirc_driver *driver; + struct lirc_buffer *delay_buf; + + /* timer used to support delay buffering */ + struct timer_list delay_timer; + int timer_running; + spinlock_t timer_lock; + + /* tracks whether we are currently receiving some signal */ + int idle; + /* sum of signal lengths received since signal start */ + unsigned long sum; + /* start time of signal; necessary for gap tracking */ + struct timeval signal_last; + struct timeval signal_start; + enum StreamzapDecoderState decoder_state; + struct timer_list flush_timer; + int flush; + int in_use; + int timeout_enabled; +}; + + +/* local function prototypes */ +static int streamzap_probe(struct usb_interface *interface, + const struct usb_device_id *id); +static void streamzap_disconnect(struct usb_interface *interface); +static void usb_streamzap_irq(struct urb *urb); +static int streamzap_use_inc(void *data); +static void streamzap_use_dec(void *data); +static long streamzap_ioctl(struct file *filep, unsigned int cmd, + unsigned long arg); +static int streamzap_suspend(struct usb_interface *intf, pm_message_t message); +static int streamzap_resume(struct usb_interface *intf); + +/* usb specific object needed to register this driver with the usb subsystem */ + +static struct usb_driver streamzap_driver = { + .name = DRIVER_NAME, + .probe = streamzap_probe, + .disconnect = streamzap_disconnect, + .suspend = streamzap_suspend, + .resume = streamzap_resume, + .id_table = streamzap_table, +}; + +static void stop_timer(struct usb_streamzap *sz) +{ + unsigned long flags; + + spin_lock_irqsave(&sz->timer_lock, flags); + if (sz->timer_running) { + sz->timer_running = 0; + spin_unlock_irqrestore(&sz->timer_lock, flags); + del_timer_sync(&sz->delay_timer); + } else { + spin_unlock_irqrestore(&sz->timer_lock, flags); + } +} + +static void flush_timeout(unsigned long arg) +{ + struct usb_streamzap *sz = (struct usb_streamzap *) arg; + + /* finally start accepting data */ + sz->flush = 0; +} +static void delay_timeout(unsigned long arg) +{ + unsigned long flags; + /* deliver data every 10 ms */ + static unsigned long timer_inc = + (10000/(1000000/HZ)) == 0 ? 1 : (10000/(1000000/HZ)); + struct usb_streamzap *sz = (struct usb_streamzap *) arg; + int data; + + spin_lock_irqsave(&sz->timer_lock, flags); + + if (!lirc_buffer_empty(sz->delay_buf) && + !lirc_buffer_full(sz->driver->rbuf)) { + lirc_buffer_read(sz->delay_buf, (unsigned char *) &data); + lirc_buffer_write(sz->driver->rbuf, (unsigned char *) &data); + } + if (!lirc_buffer_empty(sz->delay_buf)) { + while (lirc_buffer_available(sz->delay_buf) < + STREAMZAP_BUF_LEN / 2 && + !lirc_buffer_full(sz->driver->rbuf)) { + lirc_buffer_read(sz->delay_buf, + (unsigned char *) &data); + lirc_buffer_write(sz->driver->rbuf, + (unsigned char *) &data); + } + if (sz->timer_running) { + sz->delay_timer.expires = jiffies + timer_inc; + add_timer(&sz->delay_timer); + } + } else { + sz->timer_running = 0; + } + + if (!lirc_buffer_empty(sz->driver->rbuf)) + wake_up(&sz->driver->rbuf->wait_poll); + + spin_unlock_irqrestore(&sz->timer_lock, flags); +} + +static void flush_delay_buffer(struct usb_streamzap *sz) +{ + int data; + int empty = 1; + + while (!lirc_buffer_empty(sz->delay_buf)) { + empty = 0; + lirc_buffer_read(sz->delay_buf, (unsigned char *) &data); + if (!lirc_buffer_full(sz->driver->rbuf)) { + lirc_buffer_write(sz->driver->rbuf, + (unsigned char *) &data); + } else { + dprintk("buffer overflow", sz->driver->minor); + } + } + if (!empty) + wake_up(&sz->driver->rbuf->wait_poll); +} + +static void push(struct usb_streamzap *sz, unsigned char *data) +{ + unsigned long flags; + + spin_lock_irqsave(&sz->timer_lock, flags); + if (lirc_buffer_full(sz->delay_buf)) { + int read_data; + + lirc_buffer_read(sz->delay_buf, + (unsigned char *) &read_data); + if (!lirc_buffer_full(sz->driver->rbuf)) { + lirc_buffer_write(sz->driver->rbuf, + (unsigned char *) &read_data); + } else { + dprintk("buffer overflow", sz->driver->minor); + } + } + + lirc_buffer_write(sz->delay_buf, data); + + if (!sz->timer_running) { + sz->delay_timer.expires = jiffies + HZ/10; + add_timer(&sz->delay_timer); + sz->timer_running = 1; + } + + spin_unlock_irqrestore(&sz->timer_lock, flags); +} + +static void push_full_pulse(struct usb_streamzap *sz, + unsigned char value) +{ + int pulse; + + if (sz->idle) { + long deltv; + int tmp; + + sz->signal_last = sz->signal_start; + do_gettimeofday(&sz->signal_start); + + deltv = sz->signal_start.tv_sec-sz->signal_last.tv_sec; + if (deltv > 15) { + /* really long time */ + tmp = LIRC_SPACE(LIRC_VALUE_MASK); + } else { + tmp = (int) (deltv*1000000+ + sz->signal_start.tv_usec - + sz->signal_last.tv_usec); + tmp -= sz->sum; + tmp = LIRC_SPACE(tmp); + } + dprintk("ls %u", sz->driver->minor, tmp); + push(sz, (char *)&tmp); + + sz->idle = 0; + sz->sum = 0; + } + + pulse = ((int) value) * STREAMZAP_RESOLUTION; + pulse += STREAMZAP_RESOLUTION / 2; + sz->sum += pulse; + pulse = LIRC_PULSE(pulse); + + dprintk("p %u", sz->driver->minor, pulse & PULSE_MASK); + push(sz, (char *)&pulse); +} + +static void push_half_pulse(struct usb_streamzap *sz, + unsigned char value) +{ + push_full_pulse(sz, (value & STREAMZAP_PULSE_MASK)>>4); +} + +static void push_full_space(struct usb_streamzap *sz, + unsigned char value) +{ + int space; + + space = ((int) value)*STREAMZAP_RESOLUTION; + space += STREAMZAP_RESOLUTION/2; + sz->sum += space; + space = LIRC_SPACE(space); + dprintk("s %u", sz->driver->minor, space); + push(sz, (char *)&space); +} + +static void push_half_space(struct usb_streamzap *sz, + unsigned char value) +{ + push_full_space(sz, value & STREAMZAP_SPACE_MASK); +} + +/** + * usb_streamzap_irq - IRQ handler + * + * This procedure is invoked on reception of data from + * the usb remote. + */ +static void usb_streamzap_irq(struct urb *urb) +{ + struct usb_streamzap *sz; + int len; + unsigned int i = 0; + + if (!urb) + return; + + sz = urb->context; + len = urb->actual_length; + + switch (urb->status) { + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* + * this urb is terminated, clean up. + * sz might already be invalid at this point + */ + dprintk("urb status: %d", -1, urb->status); + return; + default: + break; + } + + dprintk("received %d", sz->driver->minor, urb->actual_length); + if (!sz->flush) { + for (i = 0; i < urb->actual_length; i++) { + dprintk("%d: %x", sz->driver->minor, + i, (unsigned char) sz->buf_in[i]); + switch (sz->decoder_state) { + case PulseSpace: + if ((sz->buf_in[i]&STREAMZAP_PULSE_MASK) == + STREAMZAP_PULSE_MASK) { + sz->decoder_state = FullPulse; + continue; + } else if ((sz->buf_in[i]&STREAMZAP_SPACE_MASK) + == STREAMZAP_SPACE_MASK) { + push_half_pulse(sz, sz->buf_in[i]); + sz->decoder_state = FullSpace; + continue; + } else { + push_half_pulse(sz, sz->buf_in[i]); + push_half_space(sz, sz->buf_in[i]); + } + break; + case FullPulse: + push_full_pulse(sz, sz->buf_in[i]); + sz->decoder_state = IgnorePulse; + break; + case FullSpace: + if (sz->buf_in[i] == STREAMZAP_TIMEOUT) { + sz->idle = 1; + stop_timer(sz); + if (sz->timeout_enabled) { + int timeout = + LIRC_TIMEOUT + (STREAMZAP_TIMEOUT * + STREAMZAP_RESOLUTION); + push(sz, (char *)&timeout); + } + flush_delay_buffer(sz); + } else + push_full_space(sz, sz->buf_in[i]); + sz->decoder_state = PulseSpace; + break; + case IgnorePulse: + if ((sz->buf_in[i]&STREAMZAP_SPACE_MASK) == + STREAMZAP_SPACE_MASK) { + sz->decoder_state = FullSpace; + continue; + } + push_half_space(sz, sz->buf_in[i]); + sz->decoder_state = PulseSpace; + break; + } + } + } + + usb_submit_urb(urb, GFP_ATOMIC); + + return; +} + +static struct file_operations streamzap_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = streamzap_ioctl, + .read = lirc_dev_fop_read, + .write = lirc_dev_fop_write, + .poll = lirc_dev_fop_poll, + .open = lirc_dev_fop_open, + .release = lirc_dev_fop_close, +}; + + +/** + * streamzap_probe + * + * Called by usb-core to associated with a candidate device + * On any failure the return value is the ERROR + * On success return 0 + */ +static int streamzap_probe(struct usb_interface *interface, + const struct usb_device_id *id) +{ + struct usb_device *udev = interface_to_usbdev(interface); + struct usb_host_interface *iface_host; + struct usb_streamzap *sz; + struct lirc_driver *driver; + struct lirc_buffer *lirc_buf; + struct lirc_buffer *delay_buf; + char buf[63], name[128] = ""; + int retval = -ENOMEM; + int minor = 0; + + /* Allocate space for device driver specific data */ + sz = kzalloc(sizeof(struct usb_streamzap), GFP_KERNEL); + if (sz == NULL) + return -ENOMEM; + + sz->udev = udev; + sz->interface = interface; + + /* Check to ensure endpoint information matches requirements */ + iface_host = interface->cur_altsetting; + + if (iface_host->desc.bNumEndpoints != 1) { + err("%s: Unexpected desc.bNumEndpoints (%d)", __func__, + iface_host->desc.bNumEndpoints); + retval = -ENODEV; + goto free_sz; + } + + sz->endpoint = &(iface_host->endpoint[0].desc); + if ((sz->endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) + != USB_DIR_IN) { + err("%s: endpoint doesn't match input device 02%02x", + __func__, sz->endpoint->bEndpointAddress); + retval = -ENODEV; + goto free_sz; + } + + if ((sz->endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + != USB_ENDPOINT_XFER_INT) { + err("%s: endpoint attributes don't match xfer 02%02x", + __func__, sz->endpoint->bmAttributes); + retval = -ENODEV; + goto free_sz; + } + + if (sz->endpoint->wMaxPacketSize == 0) { + err("%s: endpoint message size==0? ", __func__); + retval = -ENODEV; + goto free_sz; + } + + /* Allocate the USB buffer and IRQ URB */ + + sz->buf_in_len = sz->endpoint->wMaxPacketSize; + sz->buf_in = usb_alloc_coherent(sz->udev, sz->buf_in_len, + GFP_ATOMIC, &sz->dma_in); + if (sz->buf_in == NULL) + goto free_sz; + + sz->urb_in = usb_alloc_urb(0, GFP_KERNEL); + if (sz->urb_in == NULL) + goto free_sz; + + /* Connect this device to the LIRC sub-system */ + driver = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL); + if (!driver) + goto free_sz; + + lirc_buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL); + if (!lirc_buf) + goto free_driver; + if (lirc_buffer_init(lirc_buf, sizeof(int), STREAMZAP_BUF_LEN)) + goto kfree_lirc_buf; + + delay_buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL); + if (!delay_buf) + goto free_lirc_buf; + if (lirc_buffer_init(delay_buf, sizeof(int), STREAMZAP_BUF_LEN)) + goto kfree_delay_buf; + + sz->driver = driver; + strcpy(sz->driver->name, DRIVER_NAME); + sz->driver->minor = -1; + sz->driver->sample_rate = 0; + sz->driver->code_length = sizeof(int) * 8; + sz->driver->features = LIRC_CAN_REC_MODE2 | + LIRC_CAN_GET_REC_RESOLUTION | + LIRC_CAN_SET_REC_TIMEOUT; + sz->driver->data = sz; + sz->driver->min_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION; + sz->driver->max_timeout = STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION; + sz->driver->rbuf = lirc_buf; + sz->delay_buf = delay_buf; + sz->driver->set_use_inc = &streamzap_use_inc; + sz->driver->set_use_dec = &streamzap_use_dec; + sz->driver->fops = &streamzap_fops; + sz->driver->dev = &interface->dev; + sz->driver->owner = THIS_MODULE; + + sz->idle = 1; + sz->decoder_state = PulseSpace; + init_timer(&sz->delay_timer); + sz->delay_timer.function = delay_timeout; + sz->delay_timer.data = (unsigned long) sz; + sz->timer_running = 0; + spin_lock_init(&sz->timer_lock); + + init_timer(&sz->flush_timer); + sz->flush_timer.function = flush_timeout; + sz->flush_timer.data = (unsigned long) sz; + /* Complete final initialisations */ + + usb_fill_int_urb(sz->urb_in, udev, + usb_rcvintpipe(udev, sz->endpoint->bEndpointAddress), + sz->buf_in, sz->buf_in_len, usb_streamzap_irq, sz, + sz->endpoint->bInterval); + sz->urb_in->transfer_dma = sz->dma_in; + sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + + if (udev->descriptor.iManufacturer + && usb_string(udev, udev->descriptor.iManufacturer, + buf, sizeof(buf)) > 0) + strlcpy(name, buf, sizeof(name)); + + if (udev->descriptor.iProduct + && usb_string(udev, udev->descriptor.iProduct, + buf, sizeof(buf)) > 0) + snprintf(name + strlen(name), sizeof(name) - strlen(name), + " %s", buf); + + minor = lirc_register_driver(driver); + + if (minor < 0) + goto free_delay_buf; + + sz->driver->minor = minor; + + usb_set_intfdata(interface, sz); + + printk(KERN_INFO DRIVER_NAME "[%d]: %s on usb%d:%d attached\n", + sz->driver->minor, name, + udev->bus->busnum, sz->udev->devnum); + + return 0; + +free_delay_buf: + lirc_buffer_free(sz->delay_buf); +kfree_delay_buf: + kfree(delay_buf); +free_lirc_buf: + lirc_buffer_free(sz->driver->rbuf); +kfree_lirc_buf: + kfree(lirc_buf); +free_driver: + kfree(driver); +free_sz: + if (retval == -ENOMEM) + err("Out of memory"); + + if (sz) { + usb_free_urb(sz->urb_in); + usb_free_coherent(udev, sz->buf_in_len, sz->buf_in, sz->dma_in); + kfree(sz); + } + + return retval; +} + +static int streamzap_use_inc(void *data) +{ + struct usb_streamzap *sz = data; + + if (!sz) { + dprintk("%s called with no context", -1, __func__); + return -EINVAL; + } + dprintk("set use inc", sz->driver->minor); + + lirc_buffer_clear(sz->driver->rbuf); + lirc_buffer_clear(sz->delay_buf); + + sz->flush_timer.expires = jiffies + HZ; + sz->flush = 1; + add_timer(&sz->flush_timer); + + sz->urb_in->dev = sz->udev; + if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { + dprintk("open result = -EIO error submitting urb", + sz->driver->minor); + return -EIO; + } + sz->in_use++; + + return 0; +} + +static void streamzap_use_dec(void *data) +{ + struct usb_streamzap *sz = data; + + if (!sz) { + dprintk("%s called with no context", -1, __func__); + return; + } + dprintk("set use dec", sz->driver->minor); + + if (sz->flush) { + sz->flush = 0; + del_timer_sync(&sz->flush_timer); + } + + usb_kill_urb(sz->urb_in); + + stop_timer(sz); + + sz->in_use--; +} + +static long streamzap_ioctl(struct file *filep, unsigned int cmd, + unsigned long arg) +{ + int result = 0; + int val; + struct usb_streamzap *sz = lirc_get_pdata(filep); + + switch (cmd) { + case LIRC_GET_REC_RESOLUTION: + result = put_user(STREAMZAP_RESOLUTION, (unsigned int *) arg); + break; + case LIRC_SET_REC_TIMEOUT: + result = get_user(val, (int *)arg); + if (result == 0) { + if (val == STREAMZAP_TIMEOUT * STREAMZAP_RESOLUTION) + sz->timeout_enabled = 1; + else if (val == 0) + sz->timeout_enabled = 0; + else + result = -EINVAL; + } + break; + default: + return lirc_dev_fop_ioctl(filep, cmd, arg); + } + return result; +} + +/** + * streamzap_disconnect + * + * Called by the usb core when the device is removed from the system. + * + * This routine guarantees that the driver will not submit any more urbs + * by clearing dev->udev. It is also supposed to terminate any currently + * active urbs. Unfortunately, usb_bulk_msg(), used in streamzap_read(), + * does not provide any way to do this. + */ +static void streamzap_disconnect(struct usb_interface *interface) +{ + struct usb_streamzap *sz; + int errnum; + int minor; + + sz = usb_get_intfdata(interface); + + /* unregister from the LIRC sub-system */ + + errnum = lirc_unregister_driver(sz->driver->minor); + if (errnum != 0) + dprintk("error in lirc_unregister: (returned %d)", + sz->driver->minor, errnum); + + lirc_buffer_free(sz->delay_buf); + lirc_buffer_free(sz->driver->rbuf); + + /* unregister from the USB sub-system */ + + usb_free_urb(sz->urb_in); + + usb_free_coherent(sz->udev, sz->buf_in_len, sz->buf_in, sz->dma_in); + + minor = sz->driver->minor; + kfree(sz->driver->rbuf); + kfree(sz->driver); + kfree(sz->delay_buf); + kfree(sz); + + printk(KERN_INFO DRIVER_NAME "[%d]: disconnected\n", minor); +} + +static int streamzap_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct usb_streamzap *sz = usb_get_intfdata(intf); + + printk(KERN_INFO DRIVER_NAME "[%d]: suspend\n", sz->driver->minor); + if (sz->in_use) { + if (sz->flush) { + sz->flush = 0; + del_timer_sync(&sz->flush_timer); + } + + stop_timer(sz); + + usb_kill_urb(sz->urb_in); + } + return 0; +} + +static int streamzap_resume(struct usb_interface *intf) +{ + struct usb_streamzap *sz = usb_get_intfdata(intf); + + lirc_buffer_clear(sz->driver->rbuf); + lirc_buffer_clear(sz->delay_buf); + + if (sz->in_use) { + sz->flush_timer.expires = jiffies + HZ; + sz->flush = 1; + add_timer(&sz->flush_timer); + + sz->urb_in->dev = sz->udev; + if (usb_submit_urb(sz->urb_in, GFP_ATOMIC)) { + dprintk("open result = -EIO error submitting urb", + sz->driver->minor); + return -EIO; + } + } + return 0; +} + +/** + * usb_streamzap_init + */ +static int __init usb_streamzap_init(void) +{ + int result; + + /* register this driver with the USB subsystem */ + result = usb_register(&streamzap_driver); + + if (result) { + err("usb_register failed. Error number %d", + result); + return result; + } + + printk(KERN_INFO DRIVER_NAME " " DRIVER_VERSION " registered\n"); + return 0; +} + +/** + * usb_streamzap_exit + */ +static void __exit usb_streamzap_exit(void) +{ + usb_deregister(&streamzap_driver); +} + + +module_init(usb_streamzap_init); +module_exit(usb_streamzap_exit); + +MODULE_AUTHOR("Christoph Bartelmus, Greg Wickham, Adrian Dewhurst"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Enable debugging messages"); |