Lines Matching +full:usb +full:- +full:port +full:- +full:id
1 // SPDX-License-Identifier: GPL-2.0
3 * USB Serial Converter driver
5 * Copyright (C) 2009 - 2013 Johan Hovold (jhovold@gmail.com)
6 * Copyright (C) 1999 - 2012 Greg Kroah-Hartman (greg@kroah.com)
13 * See Documentation/usb/usb-serial.rst for more information on using this
34 #include <linux/usb.h>
35 #include <linux/usb/serial.h>
39 #define DRIVER_AUTHOR "Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
40 #define DRIVER_DESC "USB Serial Driver core"
57 * Look up the serial port structure. If it is found and it hasn't been
64 struct usb_serial_port *port; in usb_serial_port_get_by_minor() local
67 port = idr_find(&serial_minors, minor); in usb_serial_port_get_by_minor()
68 if (!port) in usb_serial_port_get_by_minor()
71 serial = port->serial; in usb_serial_port_get_by_minor()
72 mutex_lock(&serial->disc_mutex); in usb_serial_port_get_by_minor()
73 if (serial->disconnected) { in usb_serial_port_get_by_minor()
74 mutex_unlock(&serial->disc_mutex); in usb_serial_port_get_by_minor()
75 port = NULL; in usb_serial_port_get_by_minor()
77 kref_get(&serial->kref); in usb_serial_port_get_by_minor()
81 return port; in usb_serial_port_get_by_minor()
86 struct usb_serial_port *port; in allocate_minors() local
90 dev_dbg(&serial->interface->dev, "%s %d\n", __func__, num_ports); in allocate_minors()
94 port = serial->port[i]; in allocate_minors()
95 minor = idr_alloc(&serial_minors, port, 0, in allocate_minors()
99 port->minor = minor; in allocate_minors()
100 port->port_number = i; in allocate_minors()
102 serial->minors_reserved = 1; in allocate_minors()
108 idr_remove(&serial_minors, serial->port[j]->minor); in allocate_minors()
118 for (i = 0; i < serial->num_ports; ++i) in release_minors()
119 idr_remove(&serial_minors, serial->port[i]->minor); in release_minors()
121 serial->minors_reserved = 0; in release_minors()
126 struct usb_driver *driver = serial->type->usb_driver; in usb_serial_claim_interface()
129 if (serial->sibling) in usb_serial_claim_interface()
130 return -EBUSY; in usb_serial_claim_interface()
134 dev_err(&serial->interface->dev, in usb_serial_claim_interface()
139 serial->sibling = intf; in usb_serial_claim_interface()
147 struct usb_driver *driver = serial->type->usb_driver; in release_sibling()
150 if (!serial->sibling) in release_sibling()
153 if (intf == serial->sibling) in release_sibling()
154 sibling = serial->interface; in release_sibling()
156 sibling = serial->sibling; in release_sibling()
165 struct usb_serial_port *port; in destroy_serial() local
171 if (serial->minors_reserved) in destroy_serial()
174 if (serial->attached && serial->type->release) in destroy_serial()
175 serial->type->release(serial); in destroy_serial()
178 for (i = 0; i < serial->num_port_pointers; ++i) { in destroy_serial()
179 port = serial->port[i]; in destroy_serial()
180 if (port) { in destroy_serial()
181 port->serial = NULL; in destroy_serial()
182 put_device(&port->dev); in destroy_serial()
186 usb_put_intf(serial->interface); in destroy_serial()
187 usb_put_dev(serial->dev); in destroy_serial()
193 kref_put(&serial->kref, destroy_serial); in usb_serial_put()
201 * serial_install - install tty
202 * @driver: the driver (USB in our case)
206 * USB serial settings but permit them to be overridden by
207 * serial->type->init_termios on first open.
211 * where we store a pointer to the port. All these actions are reversed
216 int idx = tty->index; in serial_install()
218 struct usb_serial_port *port; in serial_install() local
220 int retval = -ENODEV; in serial_install()
222 port = usb_serial_port_get_by_minor(idx); in serial_install()
223 if (!port) in serial_install()
226 serial = port->serial; in serial_install()
227 if (!try_module_get(serial->type->driver.owner)) in serial_install()
230 init_termios = (driver->termios[idx] == NULL); in serial_install()
236 mutex_unlock(&serial->disc_mutex); in serial_install()
239 if (init_termios && serial->type->init_termios) in serial_install()
240 serial->type->init_termios(tty); in serial_install()
242 tty->driver_data = port; in serial_install()
247 module_put(serial->type->driver.owner); in serial_install()
250 mutex_unlock(&serial->disc_mutex); in serial_install()
256 struct usb_serial_port *port = in serial_port_activate() local
257 container_of(tport, struct usb_serial_port, port); in serial_port_activate()
258 struct usb_serial *serial = port->serial; in serial_port_activate()
261 mutex_lock(&serial->disc_mutex); in serial_port_activate()
262 if (serial->disconnected) { in serial_port_activate()
263 retval = -ENODEV; in serial_port_activate()
267 retval = usb_autopm_get_interface(serial->interface); in serial_port_activate()
271 retval = port->serial->type->open(tty, port); in serial_port_activate()
273 usb_autopm_put_interface(serial->interface); in serial_port_activate()
275 mutex_unlock(&serial->disc_mutex); in serial_port_activate()
285 struct usb_serial_port *port = tty->driver_data; in serial_open() local
287 dev_dbg(&port->dev, "%s\n", __func__); in serial_open()
289 return tty_port_open(&port->port, tty, filp); in serial_open()
293 * serial_port_shutdown - shut down hardware
294 * @tport: tty port to shut down
296 * Shut down a USB serial port. Serialized against activate by the
298 * of calls by the tty-port initialized flag.
304 struct usb_serial_port *port = in serial_port_shutdown() local
305 container_of(tport, struct usb_serial_port, port); in serial_port_shutdown()
306 struct usb_serial_driver *drv = port->serial->type; in serial_port_shutdown()
308 if (drv->close) in serial_port_shutdown()
309 drv->close(port); in serial_port_shutdown()
311 usb_autopm_put_interface(port->serial->interface); in serial_port_shutdown()
316 struct usb_serial_port *port = tty->driver_data; in serial_hangup() local
318 dev_dbg(&port->dev, "%s\n", __func__); in serial_hangup()
320 tty_port_hangup(&port->port); in serial_hangup()
325 struct usb_serial_port *port = tty->driver_data; in serial_close() local
327 dev_dbg(&port->dev, "%s\n", __func__); in serial_close()
329 tty_port_close(&port->port, tty, filp); in serial_close()
333 * serial_cleanup - free resources post close/hangup
336 * Do the resource freeing and refcount dropping for the port.
343 struct usb_serial_port *port = tty->driver_data; in serial_cleanup() local
347 dev_dbg(&port->dev, "%s\n", __func__); in serial_cleanup()
352 if (port->port.console) in serial_cleanup()
355 tty->driver_data = NULL; in serial_cleanup()
357 serial = port->serial; in serial_cleanup()
358 owner = serial->type->driver.owner; in serial_cleanup()
366 struct usb_serial_port *port = tty->driver_data; in serial_write() local
367 int retval = -ENODEV; in serial_write()
369 if (port->serial->dev->state == USB_STATE_NOTATTACHED) in serial_write()
372 dev_dbg(&port->dev, "%s - %zu byte(s)\n", __func__, count); in serial_write()
374 retval = port->serial->type->write(tty, port, buf, count); in serial_write()
383 struct usb_serial_port *port = tty->driver_data; in serial_write_room() local
385 dev_dbg(&port->dev, "%s\n", __func__); in serial_write_room()
387 return port->serial->type->write_room(tty); in serial_write_room()
392 struct usb_serial_port *port = tty->driver_data; in serial_chars_in_buffer() local
393 struct usb_serial *serial = port->serial; in serial_chars_in_buffer()
395 dev_dbg(&port->dev, "%s\n", __func__); in serial_chars_in_buffer()
397 if (serial->disconnected) in serial_chars_in_buffer()
400 return serial->type->chars_in_buffer(tty); in serial_chars_in_buffer()
405 struct usb_serial_port *port = tty->driver_data; in serial_wait_until_sent() local
406 struct usb_serial *serial = port->serial; in serial_wait_until_sent()
408 dev_dbg(&port->dev, "%s\n", __func__); in serial_wait_until_sent()
410 if (!port->serial->type->wait_until_sent) in serial_wait_until_sent()
413 mutex_lock(&serial->disc_mutex); in serial_wait_until_sent()
414 if (!serial->disconnected) in serial_wait_until_sent()
415 port->serial->type->wait_until_sent(tty, timeout); in serial_wait_until_sent()
416 mutex_unlock(&serial->disc_mutex); in serial_wait_until_sent()
421 struct usb_serial_port *port = tty->driver_data; in serial_throttle() local
423 dev_dbg(&port->dev, "%s\n", __func__); in serial_throttle()
425 if (port->serial->type->throttle) in serial_throttle()
426 port->serial->type->throttle(tty); in serial_throttle()
431 struct usb_serial_port *port = tty->driver_data; in serial_unthrottle() local
433 dev_dbg(&port->dev, "%s\n", __func__); in serial_unthrottle()
435 if (port->serial->type->unthrottle) in serial_unthrottle()
436 port->serial->type->unthrottle(tty); in serial_unthrottle()
441 struct usb_serial_port *port = tty->driver_data; in serial_get_serial() local
442 struct tty_port *tport = &port->port; in serial_get_serial()
445 mutex_lock(&tport->mutex); in serial_get_serial()
447 close_delay = jiffies_to_msecs(tport->close_delay) / 10; in serial_get_serial()
448 closing_wait = tport->closing_wait; in serial_get_serial()
452 ss->line = port->minor; in serial_get_serial()
453 ss->close_delay = close_delay; in serial_get_serial()
454 ss->closing_wait = closing_wait; in serial_get_serial()
456 if (port->serial->type->get_serial) in serial_get_serial()
457 port->serial->type->get_serial(tty, ss); in serial_get_serial()
459 mutex_unlock(&tport->mutex); in serial_get_serial()
466 struct usb_serial_port *port = tty->driver_data; in serial_set_serial() local
467 struct tty_port *tport = &port->port; in serial_set_serial()
471 close_delay = msecs_to_jiffies(ss->close_delay * 10); in serial_set_serial()
472 closing_wait = ss->closing_wait; in serial_set_serial()
476 mutex_lock(&tport->mutex); in serial_set_serial()
479 if (close_delay != tport->close_delay || in serial_set_serial()
480 closing_wait != tport->closing_wait) { in serial_set_serial()
481 ret = -EPERM; in serial_set_serial()
486 if (port->serial->type->set_serial) { in serial_set_serial()
487 ret = port->serial->type->set_serial(tty, ss); in serial_set_serial()
492 tport->close_delay = close_delay; in serial_set_serial()
493 tport->closing_wait = closing_wait; in serial_set_serial()
495 mutex_unlock(&tport->mutex); in serial_set_serial()
503 struct usb_serial_port *port = tty->driver_data; in serial_ioctl() local
504 int retval = -ENOIOCTLCMD; in serial_ioctl()
506 dev_dbg(&port->dev, "%s - cmd 0x%04x\n", __func__, cmd); in serial_ioctl()
510 if (port->serial->type->tiocmiwait) in serial_ioctl()
511 retval = port->serial->type->tiocmiwait(tty, arg); in serial_ioctl()
514 if (port->serial->type->ioctl) in serial_ioctl()
515 retval = port->serial->type->ioctl(tty, cmd, arg); in serial_ioctl()
524 struct usb_serial_port *port = tty->driver_data; in serial_set_termios() local
526 dev_dbg(&port->dev, "%s\n", __func__); in serial_set_termios()
528 if (port->serial->type->set_termios) in serial_set_termios()
529 port->serial->type->set_termios(tty, port, old); in serial_set_termios()
531 tty_termios_copy_hw(&tty->termios, old); in serial_set_termios()
536 struct usb_serial_port *port = tty->driver_data; in serial_break() local
538 dev_dbg(&port->dev, "%s\n", __func__); in serial_break()
540 if (port->serial->type->break_ctl) in serial_break()
541 return port->serial->type->break_ctl(tty, break_state); in serial_break()
543 return -ENOTTY; in serial_break()
549 struct usb_serial_port *port; in serial_proc_show() local
555 port = usb_serial_port_get_by_minor(i); in serial_proc_show()
556 if (port == NULL) in serial_proc_show()
558 serial = port->serial; in serial_proc_show()
561 if (serial->type->driver.owner) in serial_proc_show()
563 module_name(serial->type->driver.owner)); in serial_proc_show()
565 serial->type->description); in serial_proc_show()
567 le16_to_cpu(serial->dev->descriptor.idVendor), in serial_proc_show()
568 le16_to_cpu(serial->dev->descriptor.idProduct)); in serial_proc_show()
569 seq_printf(m, " num_ports:%d", serial->num_ports); in serial_proc_show()
570 seq_printf(m, " port:%d", port->port_number); in serial_proc_show()
571 usb_make_path(serial->dev, tmp, sizeof(tmp)); in serial_proc_show()
576 mutex_unlock(&serial->disc_mutex); in serial_proc_show()
583 struct usb_serial_port *port = tty->driver_data; in serial_tiocmget() local
585 dev_dbg(&port->dev, "%s\n", __func__); in serial_tiocmget()
587 if (port->serial->type->tiocmget) in serial_tiocmget()
588 return port->serial->type->tiocmget(tty); in serial_tiocmget()
589 return -ENOTTY; in serial_tiocmget()
595 struct usb_serial_port *port = tty->driver_data; in serial_tiocmset() local
597 dev_dbg(&port->dev, "%s\n", __func__); in serial_tiocmset()
599 if (port->serial->type->tiocmset) in serial_tiocmset()
600 return port->serial->type->tiocmset(tty, set, clear); in serial_tiocmset()
601 return -ENOTTY; in serial_tiocmset()
607 struct usb_serial_port *port = tty->driver_data; in serial_get_icount() local
609 dev_dbg(&port->dev, "%s\n", __func__); in serial_get_icount()
611 if (port->serial->type->get_icount) in serial_get_icount()
612 return port->serial->type->get_icount(tty, icount); in serial_get_icount()
613 return -ENOTTY; in serial_get_icount()
618 * disciplines have an annoying habit of calling tty->write from
621 void usb_serial_port_softint(struct usb_serial_port *port) in usb_serial_port_softint() argument
623 schedule_work(&port->work); in usb_serial_port_softint()
629 struct usb_serial_port *port = in usb_serial_port_work() local
632 tty_port_tty_wakeup(&port->port); in usb_serial_port_work()
635 static void usb_serial_port_poison_urbs(struct usb_serial_port *port) in usb_serial_port_poison_urbs() argument
639 for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) in usb_serial_port_poison_urbs()
640 usb_poison_urb(port->read_urbs[i]); in usb_serial_port_poison_urbs()
641 for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) in usb_serial_port_poison_urbs()
642 usb_poison_urb(port->write_urbs[i]); in usb_serial_port_poison_urbs()
644 usb_poison_urb(port->interrupt_in_urb); in usb_serial_port_poison_urbs()
645 usb_poison_urb(port->interrupt_out_urb); in usb_serial_port_poison_urbs()
648 static void usb_serial_port_unpoison_urbs(struct usb_serial_port *port) in usb_serial_port_unpoison_urbs() argument
652 for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) in usb_serial_port_unpoison_urbs()
653 usb_unpoison_urb(port->read_urbs[i]); in usb_serial_port_unpoison_urbs()
654 for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) in usb_serial_port_unpoison_urbs()
655 usb_unpoison_urb(port->write_urbs[i]); in usb_serial_port_unpoison_urbs()
657 usb_unpoison_urb(port->interrupt_in_urb); in usb_serial_port_unpoison_urbs()
658 usb_unpoison_urb(port->interrupt_out_urb); in usb_serial_port_unpoison_urbs()
663 struct usb_serial_port *port = to_usb_serial_port(dev); in usb_serial_port_release() local
668 usb_free_urb(port->interrupt_in_urb); in usb_serial_port_release()
669 usb_free_urb(port->interrupt_out_urb); in usb_serial_port_release()
670 for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) { in usb_serial_port_release()
671 usb_free_urb(port->read_urbs[i]); in usb_serial_port_release()
672 kfree(port->bulk_in_buffers[i]); in usb_serial_port_release()
674 for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) { in usb_serial_port_release()
675 usb_free_urb(port->write_urbs[i]); in usb_serial_port_release()
676 kfree(port->bulk_out_buffers[i]); in usb_serial_port_release()
678 kfifo_free(&port->write_fifo); in usb_serial_port_release()
679 kfree(port->interrupt_in_buffer); in usb_serial_port_release()
680 kfree(port->interrupt_out_buffer); in usb_serial_port_release()
681 tty_port_destroy(&port->port); in usb_serial_port_release()
682 kfree(port); in usb_serial_port_release()
694 serial->dev = usb_get_dev(dev); in create_serial()
695 serial->type = driver; in create_serial()
696 serial->interface = usb_get_intf(interface); in create_serial()
697 kref_init(&serial->kref); in create_serial()
698 mutex_init(&serial->disc_mutex); in create_serial()
699 serial->minors_reserved = 0; in create_serial()
710 list_for_each_entry(dynid, &drv->dynids.list, node) { in match_dynamic_id()
711 if (usb_match_one_id(intf, &dynid->id)) { in match_dynamic_id()
712 return &dynid->id; in match_dynamic_id()
721 const struct usb_device_id *id; in get_iface_id() local
723 id = usb_match_id(intf, drv->id_table); in get_iface_id()
724 if (id) { in get_iface_id()
725 dev_dbg(&intf->dev, "static descriptor matches\n"); in get_iface_id()
728 id = match_dynamic_id(intf, drv); in get_iface_id()
729 if (id) in get_iface_id()
730 dev_dbg(&intf->dev, "dynamic descriptor matches\n"); in get_iface_id()
732 return id; in get_iface_id()
739 const struct usb_device_id *id = NULL; in search_serial_device() local
741 struct usb_driver *driver = to_usb_driver(iface->dev.driver); in search_serial_device()
743 /* Check if the usb id matches a known device */ in search_serial_device()
745 if (drv->usb_driver == driver) in search_serial_device()
746 id = get_iface_id(drv, iface); in search_serial_device()
747 if (id) in search_serial_device()
754 static bool serial_port_carrier_raised(struct tty_port *port) in serial_port_carrier_raised() argument
756 struct usb_serial_port *p = container_of(port, struct usb_serial_port, port); in serial_port_carrier_raised()
757 struct usb_serial_driver *drv = p->serial->type; in serial_port_carrier_raised()
759 if (drv->carrier_raised) in serial_port_carrier_raised()
760 return drv->carrier_raised(p); in serial_port_carrier_raised()
761 /* No carrier control - don't block */ in serial_port_carrier_raised()
765 static void serial_port_dtr_rts(struct tty_port *port, bool on) in serial_port_dtr_rts() argument
767 struct usb_serial_port *p = container_of(port, struct usb_serial_port, port); in serial_port_dtr_rts()
768 struct usb_serial_driver *drv = p->serial->type; in serial_port_dtr_rts()
770 if (drv->dtr_rts) in serial_port_dtr_rts()
771 drv->dtr_rts(p, on); in serial_port_dtr_rts()
777 struct usb_serial_port *port = to_usb_serial_port(dev); in port_number_show() local
779 return sprintf(buf, "%u\n", port->port_number); in port_number_show()
800 struct device *dev = &serial->interface->dev; in store_endpoint()
801 u8 addr = epd->bEndpointAddress; in store_endpoint()
804 if (epds->num_bulk_in == ARRAY_SIZE(epds->bulk_in)) in store_endpoint()
807 epds->bulk_in[epds->num_bulk_in++] = epd; in store_endpoint()
809 if (epds->num_bulk_out == ARRAY_SIZE(epds->bulk_out)) in store_endpoint()
812 epds->bulk_out[epds->num_bulk_out++] = epd; in store_endpoint()
814 if (epds->num_interrupt_in == ARRAY_SIZE(epds->interrupt_in)) in store_endpoint()
817 epds->interrupt_in[epds->num_interrupt_in++] = epd; in store_endpoint()
819 if (epds->num_interrupt_out == ARRAY_SIZE(epds->interrupt_out)) in store_endpoint()
822 epds->interrupt_out[epds->num_interrupt_out++] = epd; in store_endpoint()
834 iface_desc = intf->cur_altsetting; in find_endpoints()
835 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { in find_endpoints()
836 epd = &iface_desc->endpoint[i].desc; in find_endpoints()
841 static int setup_port_bulk_in(struct usb_serial_port *port, in setup_port_bulk_in() argument
844 struct usb_serial_driver *type = port->serial->type; in setup_port_bulk_in()
845 struct usb_device *udev = port->serial->dev; in setup_port_bulk_in()
849 buffer_size = max_t(int, type->bulk_in_size, usb_endpoint_maxp(epd)); in setup_port_bulk_in()
850 port->bulk_in_size = buffer_size; in setup_port_bulk_in()
851 port->bulk_in_endpointAddress = epd->bEndpointAddress; in setup_port_bulk_in()
853 for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) { in setup_port_bulk_in()
854 set_bit(i, &port->read_urbs_free); in setup_port_bulk_in()
855 port->read_urbs[i] = usb_alloc_urb(0, GFP_KERNEL); in setup_port_bulk_in()
856 if (!port->read_urbs[i]) in setup_port_bulk_in()
857 return -ENOMEM; in setup_port_bulk_in()
858 port->bulk_in_buffers[i] = kmalloc(buffer_size, GFP_KERNEL); in setup_port_bulk_in()
859 if (!port->bulk_in_buffers[i]) in setup_port_bulk_in()
860 return -ENOMEM; in setup_port_bulk_in()
861 usb_fill_bulk_urb(port->read_urbs[i], udev, in setup_port_bulk_in()
862 usb_rcvbulkpipe(udev, epd->bEndpointAddress), in setup_port_bulk_in()
863 port->bulk_in_buffers[i], buffer_size, in setup_port_bulk_in()
864 type->read_bulk_callback, port); in setup_port_bulk_in()
867 port->read_urb = port->read_urbs[0]; in setup_port_bulk_in()
868 port->bulk_in_buffer = port->bulk_in_buffers[0]; in setup_port_bulk_in()
873 static int setup_port_bulk_out(struct usb_serial_port *port, in setup_port_bulk_out() argument
876 struct usb_serial_driver *type = port->serial->type; in setup_port_bulk_out()
877 struct usb_device *udev = port->serial->dev; in setup_port_bulk_out()
881 if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL)) in setup_port_bulk_out()
882 return -ENOMEM; in setup_port_bulk_out()
883 if (type->bulk_out_size) in setup_port_bulk_out()
884 buffer_size = type->bulk_out_size; in setup_port_bulk_out()
887 port->bulk_out_size = buffer_size; in setup_port_bulk_out()
888 port->bulk_out_endpointAddress = epd->bEndpointAddress; in setup_port_bulk_out()
890 for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) { in setup_port_bulk_out()
891 set_bit(i, &port->write_urbs_free); in setup_port_bulk_out()
892 port->write_urbs[i] = usb_alloc_urb(0, GFP_KERNEL); in setup_port_bulk_out()
893 if (!port->write_urbs[i]) in setup_port_bulk_out()
894 return -ENOMEM; in setup_port_bulk_out()
895 port->bulk_out_buffers[i] = kmalloc(buffer_size, GFP_KERNEL); in setup_port_bulk_out()
896 if (!port->bulk_out_buffers[i]) in setup_port_bulk_out()
897 return -ENOMEM; in setup_port_bulk_out()
898 usb_fill_bulk_urb(port->write_urbs[i], udev, in setup_port_bulk_out()
899 usb_sndbulkpipe(udev, epd->bEndpointAddress), in setup_port_bulk_out()
900 port->bulk_out_buffers[i], buffer_size, in setup_port_bulk_out()
901 type->write_bulk_callback, port); in setup_port_bulk_out()
904 port->write_urb = port->write_urbs[0]; in setup_port_bulk_out()
905 port->bulk_out_buffer = port->bulk_out_buffers[0]; in setup_port_bulk_out()
910 static int setup_port_interrupt_in(struct usb_serial_port *port, in setup_port_interrupt_in() argument
913 struct usb_serial_driver *type = port->serial->type; in setup_port_interrupt_in()
914 struct usb_device *udev = port->serial->dev; in setup_port_interrupt_in()
917 port->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); in setup_port_interrupt_in()
918 if (!port->interrupt_in_urb) in setup_port_interrupt_in()
919 return -ENOMEM; in setup_port_interrupt_in()
921 port->interrupt_in_endpointAddress = epd->bEndpointAddress; in setup_port_interrupt_in()
922 port->interrupt_in_buffer = kmalloc(buffer_size, GFP_KERNEL); in setup_port_interrupt_in()
923 if (!port->interrupt_in_buffer) in setup_port_interrupt_in()
924 return -ENOMEM; in setup_port_interrupt_in()
925 usb_fill_int_urb(port->interrupt_in_urb, udev, in setup_port_interrupt_in()
926 usb_rcvintpipe(udev, epd->bEndpointAddress), in setup_port_interrupt_in()
927 port->interrupt_in_buffer, buffer_size, in setup_port_interrupt_in()
928 type->read_int_callback, port, in setup_port_interrupt_in()
929 epd->bInterval); in setup_port_interrupt_in()
934 static int setup_port_interrupt_out(struct usb_serial_port *port, in setup_port_interrupt_out() argument
937 struct usb_serial_driver *type = port->serial->type; in setup_port_interrupt_out()
938 struct usb_device *udev = port->serial->dev; in setup_port_interrupt_out()
941 port->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL); in setup_port_interrupt_out()
942 if (!port->interrupt_out_urb) in setup_port_interrupt_out()
943 return -ENOMEM; in setup_port_interrupt_out()
945 port->interrupt_out_size = buffer_size; in setup_port_interrupt_out()
946 port->interrupt_out_endpointAddress = epd->bEndpointAddress; in setup_port_interrupt_out()
947 port->interrupt_out_buffer = kmalloc(buffer_size, GFP_KERNEL); in setup_port_interrupt_out()
948 if (!port->interrupt_out_buffer) in setup_port_interrupt_out()
949 return -ENOMEM; in setup_port_interrupt_out()
950 usb_fill_int_urb(port->interrupt_out_urb, udev, in setup_port_interrupt_out()
951 usb_sndintpipe(udev, epd->bEndpointAddress), in setup_port_interrupt_out()
952 port->interrupt_out_buffer, buffer_size, in setup_port_interrupt_out()
953 type->write_int_callback, port, in setup_port_interrupt_out()
954 epd->bInterval); in setup_port_interrupt_out()
960 const struct usb_device_id *id) in usb_serial_probe() argument
962 struct device *ddev = &interface->dev; in usb_serial_probe()
965 struct usb_serial_port *port; in usb_serial_probe() local
978 return -ENODEV; in usb_serial_probe()
981 if (!try_module_get(type->driver.owner)) { in usb_serial_probe()
984 return -EIO; in usb_serial_probe()
990 retval = -ENOMEM; in usb_serial_probe()
995 if (type->probe) { in usb_serial_probe()
996 const struct usb_device_id *id; in usb_serial_probe() local
998 id = get_iface_id(type, interface); in usb_serial_probe()
999 retval = type->probe(serial, id); in usb_serial_probe()
1010 retval = -ENOMEM; in usb_serial_probe()
1015 if (serial->sibling) in usb_serial_probe()
1016 find_endpoints(serial, epds, serial->sibling); in usb_serial_probe()
1018 if (epds->num_bulk_in < type->num_bulk_in || in usb_serial_probe()
1019 epds->num_bulk_out < type->num_bulk_out || in usb_serial_probe()
1020 epds->num_interrupt_in < type->num_interrupt_in || in usb_serial_probe()
1021 epds->num_interrupt_out < type->num_interrupt_out) { in usb_serial_probe()
1023 retval = -ENODEV; in usb_serial_probe()
1027 if (type->calc_num_ports) { in usb_serial_probe()
1028 retval = type->calc_num_ports(serial, epds); in usb_serial_probe()
1035 num_ports = type->num_ports; in usb_serial_probe()
1042 serial->num_ports = (unsigned char)num_ports; in usb_serial_probe()
1043 serial->num_bulk_in = epds->num_bulk_in; in usb_serial_probe()
1044 serial->num_bulk_out = epds->num_bulk_out; in usb_serial_probe()
1045 serial->num_interrupt_in = epds->num_interrupt_in; in usb_serial_probe()
1046 serial->num_interrupt_out = epds->num_interrupt_out; in usb_serial_probe()
1049 dev_info(ddev, "%s converter detected\n", type->description); in usb_serial_probe()
1054 max_endpoints = max(epds->num_bulk_in, epds->num_bulk_out); in usb_serial_probe()
1055 max_endpoints = max(max_endpoints, epds->num_interrupt_in); in usb_serial_probe()
1056 max_endpoints = max(max_endpoints, epds->num_interrupt_out); in usb_serial_probe()
1057 max_endpoints = max(max_endpoints, serial->num_ports); in usb_serial_probe()
1058 serial->num_port_pointers = max_endpoints; in usb_serial_probe()
1060 dev_dbg(ddev, "setting up %d port structure(s)\n", max_endpoints); in usb_serial_probe()
1062 port = kzalloc(sizeof(struct usb_serial_port), GFP_KERNEL); in usb_serial_probe()
1063 if (!port) { in usb_serial_probe()
1064 retval = -ENOMEM; in usb_serial_probe()
1067 tty_port_init(&port->port); in usb_serial_probe()
1068 port->port.ops = &serial_port_ops; in usb_serial_probe()
1069 port->serial = serial; in usb_serial_probe()
1070 spin_lock_init(&port->lock); in usb_serial_probe()
1073 INIT_WORK(&port->work, usb_serial_port_work); in usb_serial_probe()
1074 serial->port[i] = port; in usb_serial_probe()
1075 port->dev.parent = &interface->dev; in usb_serial_probe()
1076 port->dev.driver = NULL; in usb_serial_probe()
1077 port->dev.bus = &usb_serial_bus_type; in usb_serial_probe()
1078 port->dev.release = &usb_serial_port_release; in usb_serial_probe()
1079 port->dev.groups = usb_serial_port_groups; in usb_serial_probe()
1080 device_initialize(&port->dev); in usb_serial_probe()
1084 for (i = 0; i < epds->num_bulk_in; ++i) { in usb_serial_probe()
1085 retval = setup_port_bulk_in(serial->port[i], epds->bulk_in[i]); in usb_serial_probe()
1090 for (i = 0; i < epds->num_bulk_out; ++i) { in usb_serial_probe()
1091 retval = setup_port_bulk_out(serial->port[i], in usb_serial_probe()
1092 epds->bulk_out[i]); in usb_serial_probe()
1097 if (serial->type->read_int_callback) { in usb_serial_probe()
1098 for (i = 0; i < epds->num_interrupt_in; ++i) { in usb_serial_probe()
1099 retval = setup_port_interrupt_in(serial->port[i], in usb_serial_probe()
1100 epds->interrupt_in[i]); in usb_serial_probe()
1104 } else if (epds->num_interrupt_in) { in usb_serial_probe()
1108 if (serial->type->write_int_callback) { in usb_serial_probe()
1109 for (i = 0; i < epds->num_interrupt_out; ++i) { in usb_serial_probe()
1110 retval = setup_port_interrupt_out(serial->port[i], in usb_serial_probe()
1111 epds->interrupt_out[i]); in usb_serial_probe()
1115 } else if (epds->num_interrupt_out) { in usb_serial_probe()
1122 if (type->attach) { in usb_serial_probe()
1123 retval = type->attach(serial); in usb_serial_probe()
1126 serial->attached = 1; in usb_serial_probe()
1129 serial port as it's about to disappear */ in usb_serial_probe()
1130 serial->num_ports = 0; in usb_serial_probe()
1134 serial->attached = 1; in usb_serial_probe()
1145 port = serial->port[i]; in usb_serial_probe()
1146 dev_set_name(&port->dev, "ttyUSB%d", port->minor); in usb_serial_probe()
1147 dev_dbg(ddev, "registering %s\n", dev_name(&port->dev)); in usb_serial_probe()
1148 device_enable_async_suspend(&port->dev); in usb_serial_probe()
1150 retval = device_add(&port->dev); in usb_serial_probe()
1152 dev_err(ddev, "Error registering port device, continuing\n"); in usb_serial_probe()
1156 usb_serial_console_init(serial->port[0]->minor); in usb_serial_probe()
1159 module_put(type->driver.owner); in usb_serial_probe()
1168 module_put(type->driver.owner); in usb_serial_probe()
1177 struct device *dev = &interface->dev; in usb_serial_disconnect()
1178 struct usb_serial_port *port; in usb_serial_disconnect() local
1186 mutex_lock(&serial->disc_mutex); in usb_serial_disconnect()
1188 serial->disconnected = 1; in usb_serial_disconnect()
1189 mutex_unlock(&serial->disc_mutex); in usb_serial_disconnect()
1191 for (i = 0; i < serial->num_ports; ++i) { in usb_serial_disconnect()
1192 port = serial->port[i]; in usb_serial_disconnect()
1193 tty_port_tty_vhangup(&port->port); in usb_serial_disconnect()
1194 usb_serial_port_poison_urbs(port); in usb_serial_disconnect()
1195 wake_up_interruptible(&port->port.delta_msr_wait); in usb_serial_disconnect()
1196 cancel_work_sync(&port->work); in usb_serial_disconnect()
1197 if (device_is_registered(&port->dev)) in usb_serial_disconnect()
1198 device_del(&port->dev); in usb_serial_disconnect()
1200 if (serial->type->disconnect) in usb_serial_disconnect()
1201 serial->type->disconnect(serial); in usb_serial_disconnect()
1216 if (serial->suspend_count++) in usb_serial_suspend()
1220 * serial->type->suspend() MUST return 0 in system sleep context, in usb_serial_suspend()
1224 if (serial->type->suspend) { in usb_serial_suspend()
1225 r = serial->type->suspend(serial, message); in usb_serial_suspend()
1227 serial->suspend_count--; in usb_serial_suspend()
1232 for (i = 0; i < serial->num_ports; ++i) in usb_serial_suspend()
1233 usb_serial_port_poison_urbs(serial->port[i]); in usb_serial_suspend()
1243 for (i = 0; i < serial->num_ports; ++i) in usb_serial_unpoison_port_urbs()
1244 usb_serial_port_unpoison_urbs(serial->port[i]); in usb_serial_unpoison_port_urbs()
1253 if (--serial->suspend_count) in usb_serial_resume()
1258 if (serial->type->resume) in usb_serial_resume()
1259 rv = serial->type->resume(serial); in usb_serial_resume()
1273 if (--serial->suspend_count) in usb_serial_reset_resume()
1278 if (serial->type->reset_resume) { in usb_serial_reset_resume()
1279 rv = serial->type->reset_resume(serial); in usb_serial_reset_resume()
1281 rv = -EOPNOTSUPP; in usb_serial_reset_resume()
1282 intf->needs_binding = 1; in usb_serial_reset_resume()
1326 pr_err("%s - registering bus driver failed\n", __func__); in usb_serial_init()
1330 usb_serial_tty_driver->driver_name = "usbserial"; in usb_serial_init()
1331 usb_serial_tty_driver->name = "ttyUSB"; in usb_serial_init()
1332 usb_serial_tty_driver->major = USB_SERIAL_TTY_MAJOR; in usb_serial_init()
1333 usb_serial_tty_driver->minor_start = 0; in usb_serial_init()
1334 usb_serial_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; in usb_serial_init()
1335 usb_serial_tty_driver->subtype = SERIAL_TYPE_NORMAL; in usb_serial_init()
1336 usb_serial_tty_driver->init_termios = tty_std_termios; in usb_serial_init()
1337 usb_serial_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD in usb_serial_init()
1339 usb_serial_tty_driver->init_termios.c_ispeed = 9600; in usb_serial_init()
1340 usb_serial_tty_driver->init_termios.c_ospeed = 9600; in usb_serial_init()
1344 pr_err("%s - tty_register_driver failed\n", __func__); in usb_serial_init()
1351 pr_err("%s - registering generic driver failed\n", __func__); in usb_serial_init()
1362 pr_err("%s - returning with error %d\n", __func__, result); in usb_serial_init()
1386 if (!type->function) { \
1387 type->function = usb_serial_generic_##function; \
1389 type->driver.name); \
1400 if (device->tx_empty) in usb_serial_operations_init()
1413 return -ENODEV; in usb_serial_register()
1415 if (!driver->description) in usb_serial_register()
1416 driver->description = driver->driver.name; in usb_serial_register()
1417 if (!driver->usb_driver) { in usb_serial_register()
1419 driver->description); in usb_serial_register()
1420 return -EINVAL; in usb_serial_register()
1424 driver->driver.suppress_bind_attrs = true; in usb_serial_register()
1430 list_add(&driver->driver_list, &usb_serial_driver_list); in usb_serial_register()
1434 pr_err("problem %d when registering driver %s\n", retval, driver->description); in usb_serial_register()
1435 list_del(&driver->driver_list); in usb_serial_register()
1437 pr_info("USB Serial support registered for %s\n", driver->description); in usb_serial_register()
1445 pr_info("USB Serial deregistering driver %s\n", device->description); in usb_serial_deregister()
1448 list_del(&device->driver_list); in usb_serial_deregister()
1455 * __usb_serial_register_drivers - register drivers for a usb-serial module
1456 * @serial_drivers: NULL-terminated array of pointers to drivers to be registered
1482 * Suspend/resume support is implemented in the usb-serial core, in __usb_serial_register_drivers()
1483 * so fill in the PM-related fields in udriver. in __usb_serial_register_drivers()
1487 return -ENOMEM; in __usb_serial_register_drivers()
1489 udriver->name = name; in __usb_serial_register_drivers()
1490 udriver->no_dynamic_id = 1; in __usb_serial_register_drivers()
1491 udriver->supports_autosuspend = 1; in __usb_serial_register_drivers()
1492 udriver->suspend = usb_serial_suspend; in __usb_serial_register_drivers()
1493 udriver->resume = usb_serial_resume; in __usb_serial_register_drivers()
1494 udriver->probe = usb_serial_probe; in __usb_serial_register_drivers()
1495 udriver->disconnect = usb_serial_disconnect; in __usb_serial_register_drivers()
1499 if ((*sd)->reset_resume) { in __usb_serial_register_drivers()
1500 udriver->reset_resume = usb_serial_reset_resume; in __usb_serial_register_drivers()
1510 (*sd)->usb_driver = udriver; in __usb_serial_register_drivers()
1511 (*sd)->driver.owner = owner; in __usb_serial_register_drivers()
1518 udriver->id_table = id_table; in __usb_serial_register_drivers()
1519 rc = driver_attach(&udriver->driver); in __usb_serial_register_drivers()
1523 while (sd-- > serial_drivers) in __usb_serial_register_drivers()
1533 * usb_serial_deregister_drivers - deregister drivers for a usb-serial module
1534 * @serial_drivers: NULL-terminated array of pointers to drivers to be deregistered
1542 struct usb_driver *udriver = (*serial_drivers)->usb_driver; in usb_serial_deregister_drivers()