Lines Matching refs:dev
189 static void ld_usb_abort_transfers(struct ld_usb *dev) in ld_usb_abort_transfers() argument
192 if (dev->interrupt_in_running) { in ld_usb_abort_transfers()
193 dev->interrupt_in_running = 0; in ld_usb_abort_transfers()
194 if (dev->intf) in ld_usb_abort_transfers()
195 usb_kill_urb(dev->interrupt_in_urb); in ld_usb_abort_transfers()
197 if (dev->interrupt_out_busy) in ld_usb_abort_transfers()
198 if (dev->intf) in ld_usb_abort_transfers()
199 usb_kill_urb(dev->interrupt_out_urb); in ld_usb_abort_transfers()
205 static void ld_usb_delete(struct ld_usb *dev) in ld_usb_delete() argument
207 ld_usb_abort_transfers(dev); in ld_usb_delete()
210 usb_free_urb(dev->interrupt_in_urb); in ld_usb_delete()
211 usb_free_urb(dev->interrupt_out_urb); in ld_usb_delete()
212 kfree(dev->ring_buffer); in ld_usb_delete()
213 kfree(dev->interrupt_in_buffer); in ld_usb_delete()
214 kfree(dev->interrupt_out_buffer); in ld_usb_delete()
215 kfree(dev); in ld_usb_delete()
223 struct ld_usb *dev = urb->context; in ld_usb_interrupt_in_callback() local
235 dev_dbg(&dev->intf->dev, in ld_usb_interrupt_in_callback()
238 spin_lock(&dev->rbsl); in ld_usb_interrupt_in_callback()
243 spin_lock(&dev->rbsl); in ld_usb_interrupt_in_callback()
245 next_ring_head = (dev->ring_head+1) % ring_buffer_size; in ld_usb_interrupt_in_callback()
246 if (next_ring_head != dev->ring_tail) { in ld_usb_interrupt_in_callback()
247 …actual_buffer = (size_t*)(dev->ring_buffer + dev->ring_head*(sizeof(size_t)+dev->interrupt_in_endp… in ld_usb_interrupt_in_callback()
250 memcpy(actual_buffer+1, dev->interrupt_in_buffer, urb->actual_length); in ld_usb_interrupt_in_callback()
251 dev->ring_head = next_ring_head; in ld_usb_interrupt_in_callback()
252 dev_dbg(&dev->intf->dev, "%s: received %d bytes\n", in ld_usb_interrupt_in_callback()
255 dev_warn(&dev->intf->dev, in ld_usb_interrupt_in_callback()
258 dev->buffer_overflow = 1; in ld_usb_interrupt_in_callback()
264 if (dev->interrupt_in_running && !dev->buffer_overflow && dev->intf) { in ld_usb_interrupt_in_callback()
265 retval = usb_submit_urb(dev->interrupt_in_urb, GFP_ATOMIC); in ld_usb_interrupt_in_callback()
267 dev_err(&dev->intf->dev, in ld_usb_interrupt_in_callback()
269 dev->buffer_overflow = 1; in ld_usb_interrupt_in_callback()
272 spin_unlock(&dev->rbsl); in ld_usb_interrupt_in_callback()
274 dev->interrupt_in_done = 1; in ld_usb_interrupt_in_callback()
275 wake_up_interruptible(&dev->read_wait); in ld_usb_interrupt_in_callback()
283 struct ld_usb *dev = urb->context; in ld_usb_interrupt_out_callback() local
290 dev_dbg(&dev->intf->dev, in ld_usb_interrupt_out_callback()
294 dev->interrupt_out_busy = 0; in ld_usb_interrupt_out_callback()
295 wake_up_interruptible(&dev->write_wait); in ld_usb_interrupt_out_callback()
303 struct ld_usb *dev; in ld_usb_open() local
319 dev = usb_get_intfdata(interface); in ld_usb_open()
321 if (!dev) in ld_usb_open()
325 if (mutex_lock_interruptible(&dev->mutex)) in ld_usb_open()
329 if (dev->open_count) { in ld_usb_open()
333 dev->open_count = 1; in ld_usb_open()
336 dev->ring_head = 0; in ld_usb_open()
337 dev->ring_tail = 0; in ld_usb_open()
338 dev->buffer_overflow = 0; in ld_usb_open()
339 usb_fill_int_urb(dev->interrupt_in_urb, in ld_usb_open()
342 dev->interrupt_in_endpoint->bEndpointAddress), in ld_usb_open()
343 dev->interrupt_in_buffer, in ld_usb_open()
344 dev->interrupt_in_endpoint_size, in ld_usb_open()
346 dev, in ld_usb_open()
347 dev->interrupt_in_interval); in ld_usb_open()
349 dev->interrupt_in_running = 1; in ld_usb_open()
350 dev->interrupt_in_done = 0; in ld_usb_open()
352 retval = usb_submit_urb(dev->interrupt_in_urb, GFP_KERNEL); in ld_usb_open()
354 dev_err(&interface->dev, "Couldn't submit interrupt_in_urb %d\n", retval); in ld_usb_open()
355 dev->interrupt_in_running = 0; in ld_usb_open()
356 dev->open_count = 0; in ld_usb_open()
361 file->private_data = dev; in ld_usb_open()
364 mutex_unlock(&dev->mutex); in ld_usb_open()
374 struct ld_usb *dev; in ld_usb_release() local
377 dev = file->private_data; in ld_usb_release()
379 if (dev == NULL) { in ld_usb_release()
384 if (mutex_lock_interruptible(&dev->mutex)) { in ld_usb_release()
389 if (dev->open_count != 1) { in ld_usb_release()
393 if (dev->intf == NULL) { in ld_usb_release()
395 mutex_unlock(&dev->mutex); in ld_usb_release()
397 ld_usb_delete(dev); in ld_usb_release()
402 if (dev->interrupt_out_busy) in ld_usb_release()
403 wait_event_interruptible_timeout(dev->write_wait, !dev->interrupt_out_busy, 2 * HZ); in ld_usb_release()
404 ld_usb_abort_transfers(dev); in ld_usb_release()
405 dev->open_count = 0; in ld_usb_release()
408 mutex_unlock(&dev->mutex); in ld_usb_release()
419 struct ld_usb *dev; in ld_usb_poll() local
422 dev = file->private_data; in ld_usb_poll()
424 if (!dev->intf) in ld_usb_poll()
427 poll_wait(file, &dev->read_wait, wait); in ld_usb_poll()
428 poll_wait(file, &dev->write_wait, wait); in ld_usb_poll()
430 if (dev->ring_head != dev->ring_tail) in ld_usb_poll()
432 if (!dev->interrupt_out_busy) in ld_usb_poll()
444 struct ld_usb *dev; in ld_usb_read() local
450 dev = file->private_data; in ld_usb_read()
457 if (mutex_lock_interruptible(&dev->mutex)) { in ld_usb_read()
463 if (dev->intf == NULL) { in ld_usb_read()
470 spin_lock_irq(&dev->rbsl); in ld_usb_read()
471 if (dev->ring_head == dev->ring_tail) { in ld_usb_read()
472 dev->interrupt_in_done = 0; in ld_usb_read()
473 spin_unlock_irq(&dev->rbsl); in ld_usb_read()
478 retval = wait_event_interruptible(dev->read_wait, dev->interrupt_in_done); in ld_usb_read()
482 spin_unlock_irq(&dev->rbsl); in ld_usb_read()
486 …actual_buffer = (size_t*)(dev->ring_buffer + dev->ring_tail*(sizeof(size_t)+dev->interrupt_in_endp… in ld_usb_read()
489 dev_warn(&dev->intf->dev, "Read buffer overflow, %zd bytes dropped\n", in ld_usb_read()
497 dev->ring_tail = (dev->ring_tail+1) % ring_buffer_size; in ld_usb_read()
501 spin_lock_irq(&dev->rbsl); in ld_usb_read()
502 if (dev->buffer_overflow) { in ld_usb_read()
503 dev->buffer_overflow = 0; in ld_usb_read()
504 spin_unlock_irq(&dev->rbsl); in ld_usb_read()
505 rv = usb_submit_urb(dev->interrupt_in_urb, GFP_KERNEL); in ld_usb_read()
507 dev->buffer_overflow = 1; in ld_usb_read()
509 spin_unlock_irq(&dev->rbsl); in ld_usb_read()
514 mutex_unlock(&dev->mutex); in ld_usb_read()
526 struct ld_usb *dev; in ld_usb_write() local
530 dev = file->private_data; in ld_usb_write()
537 if (mutex_lock_interruptible(&dev->mutex)) { in ld_usb_write()
543 if (dev->intf == NULL) { in ld_usb_write()
550 if (dev->interrupt_out_busy) { in ld_usb_write()
555 retval = wait_event_interruptible(dev->write_wait, !dev->interrupt_out_busy); in ld_usb_write()
562 bytes_to_write = min(count, write_buffer_size*dev->interrupt_out_endpoint_size); in ld_usb_write()
564 dev_warn(&dev->intf->dev, "Write buffer overflow, %zd bytes dropped\n",count-bytes_to_write); in ld_usb_write()
565 dev_dbg(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n", in ld_usb_write()
568 if (copy_from_user(dev->interrupt_out_buffer, buffer, bytes_to_write)) { in ld_usb_write()
573 if (dev->interrupt_out_endpoint == NULL) { in ld_usb_write()
575 retval = usb_control_msg(interface_to_usbdev(dev->intf), in ld_usb_write()
576 usb_sndctrlpipe(interface_to_usbdev(dev->intf), 0), in ld_usb_write()
580 dev->interrupt_out_buffer, in ld_usb_write()
584 dev_err(&dev->intf->dev, in ld_usb_write()
591 usb_fill_int_urb(dev->interrupt_out_urb, in ld_usb_write()
592 interface_to_usbdev(dev->intf), in ld_usb_write()
593 usb_sndintpipe(interface_to_usbdev(dev->intf), in ld_usb_write()
594 dev->interrupt_out_endpoint->bEndpointAddress), in ld_usb_write()
595 dev->interrupt_out_buffer, in ld_usb_write()
598 dev, in ld_usb_write()
599 dev->interrupt_out_interval); in ld_usb_write()
601 dev->interrupt_out_busy = 1; in ld_usb_write()
604 retval = usb_submit_urb(dev->interrupt_out_urb, GFP_KERNEL); in ld_usb_write()
606 dev->interrupt_out_busy = 0; in ld_usb_write()
607 dev_err(&dev->intf->dev, in ld_usb_write()
615 mutex_unlock(&dev->mutex); in ld_usb_write()
651 struct ld_usb *dev = NULL; in ld_usb_probe() local
660 dev = kzalloc(sizeof(*dev), GFP_KERNEL); in ld_usb_probe()
661 if (dev == NULL) { in ld_usb_probe()
662 dev_err(&intf->dev, "Out of memory\n"); in ld_usb_probe()
665 mutex_init(&dev->mutex); in ld_usb_probe()
666 spin_lock_init(&dev->rbsl); in ld_usb_probe()
667 dev->intf = intf; in ld_usb_probe()
668 init_waitqueue_head(&dev->read_wait); in ld_usb_probe()
669 init_waitqueue_head(&dev->write_wait); in ld_usb_probe()
678 dev_err(&intf->dev, "Couldn't allocate string buffer\n"); in ld_usb_probe()
693 dev->interrupt_in_endpoint = endpoint; in ld_usb_probe()
696 dev->interrupt_out_endpoint = endpoint; in ld_usb_probe()
698 if (dev->interrupt_in_endpoint == NULL) { in ld_usb_probe()
699 dev_err(&intf->dev, "Interrupt in endpoint not found\n"); in ld_usb_probe()
702 if (dev->interrupt_out_endpoint == NULL) in ld_usb_probe()
703 dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n"); in ld_usb_probe()
705 dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint); in ld_usb_probe()
706 …dev->ring_buffer = kmalloc(ring_buffer_size*(sizeof(size_t)+dev->interrupt_in_endpoint_size), GFP_… in ld_usb_probe()
707 if (!dev->ring_buffer) { in ld_usb_probe()
708 dev_err(&intf->dev, "Couldn't allocate ring_buffer\n"); in ld_usb_probe()
711 dev->interrupt_in_buffer = kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL); in ld_usb_probe()
712 if (!dev->interrupt_in_buffer) { in ld_usb_probe()
713 dev_err(&intf->dev, "Couldn't allocate interrupt_in_buffer\n"); in ld_usb_probe()
716 dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); in ld_usb_probe()
717 if (!dev->interrupt_in_urb) { in ld_usb_probe()
718 dev_err(&intf->dev, "Couldn't allocate interrupt_in_urb\n"); in ld_usb_probe()
721 …dev->interrupt_out_endpoint_size = dev->interrupt_out_endpoint ? usb_endpoint_maxp(dev->interrupt_… in ld_usb_probe()
723 …dev->interrupt_out_buffer = kmalloc(write_buffer_size*dev->interrupt_out_endpoint_size, GFP_KERNEL… in ld_usb_probe()
724 if (!dev->interrupt_out_buffer) { in ld_usb_probe()
725 dev_err(&intf->dev, "Couldn't allocate interrupt_out_buffer\n"); in ld_usb_probe()
728 dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL); in ld_usb_probe()
729 if (!dev->interrupt_out_urb) { in ld_usb_probe()
730 dev_err(&intf->dev, "Couldn't allocate interrupt_out_urb\n"); in ld_usb_probe()
733 …dev->interrupt_in_interval = min_interrupt_in_interval > dev->interrupt_in_endpoint->bInterval ? m… in ld_usb_probe()
734 if (dev->interrupt_out_endpoint) in ld_usb_probe()
735 …dev->interrupt_out_interval = min_interrupt_out_interval > dev->interrupt_out_endpoint->bInterval … in ld_usb_probe()
738 usb_set_intfdata(intf, dev); in ld_usb_probe()
743 dev_err(&intf->dev, "Not able to get a minor for this device.\n"); in ld_usb_probe()
749 dev_info(&intf->dev, "LD USB Device #%d now attached to major %d minor %d\n", in ld_usb_probe()
756 ld_usb_delete(dev); in ld_usb_probe()
768 struct ld_usb *dev; in ld_usb_disconnect() local
771 dev = usb_get_intfdata(intf); in ld_usb_disconnect()
779 mutex_lock(&dev->mutex); in ld_usb_disconnect()
782 if (!dev->open_count) { in ld_usb_disconnect()
783 mutex_unlock(&dev->mutex); in ld_usb_disconnect()
784 ld_usb_delete(dev); in ld_usb_disconnect()
786 dev->intf = NULL; in ld_usb_disconnect()
788 wake_up_interruptible_all(&dev->read_wait); in ld_usb_disconnect()
789 wake_up_interruptible_all(&dev->write_wait); in ld_usb_disconnect()
790 mutex_unlock(&dev->mutex); in ld_usb_disconnect()
793 dev_info(&intf->dev, "LD USB Device #%d now disconnected\n", in ld_usb_disconnect()