Lines Matching refs:port
28 dbc_send_packet(struct dbc_port *port, char *packet, unsigned int size)
32 len = kfifo_len(&port->write_fifo);
36 size = kfifo_out(&port->write_fifo, packet, size);
40 static int dbc_start_tx(struct dbc_port *port)
41 __releases(&port->port_lock)
42 __acquires(&port->port_lock)
48 struct list_head *pool = &port->write_pool;
52 len = dbc_send_packet(port, req->buf, DBC_MAX_PACKET);
60 spin_unlock(&port->port_lock);
62 spin_lock(&port->port_lock);
70 if (do_tty_wake && port->port.tty)
71 tty_wakeup(port->port.tty);
76 static void dbc_start_rx(struct dbc_port *port)
77 __releases(&port->port_lock)
78 __acquires(&port->port_lock)
82 struct list_head *pool = &port->read_pool;
85 if (!port->port.tty)
92 spin_unlock(&port->port_lock);
94 spin_lock(&port->port_lock);
107 struct dbc_port *port = dbc_to_port(dbc);
109 spin_lock_irqsave(&port->port_lock, flags);
110 list_add_tail(&req->list_pool, &port->read_queue);
111 tasklet_schedule(&port->push);
112 spin_unlock_irqrestore(&port->port_lock, flags);
118 struct dbc_port *port = dbc_to_port(dbc);
120 spin_lock_irqsave(&port->port_lock, flags);
121 list_add(&req->list_pool, &port->write_pool);
124 dbc_start_tx(port);
133 spin_unlock_irqrestore(&port->port_lock, flags);
183 struct dbc_port *port;
186 port = idr_find(&dbc_tty_minors, tty->index);
189 if (!port)
192 tty->driver_data = port;
194 return tty_port_install(&port->port, driver, tty);
199 struct dbc_port *port = tty->driver_data;
201 return tty_port_open(&port->port, tty, file);
206 struct dbc_port *port = tty->driver_data;
208 tty_port_close(&port->port, tty, file);
214 struct dbc_port *port = tty->driver_data;
217 spin_lock_irqsave(&port->port_lock, flags);
219 count = kfifo_in(&port->write_fifo, buf, count);
220 dbc_start_tx(port);
221 spin_unlock_irqrestore(&port->port_lock, flags);
228 struct dbc_port *port = tty->driver_data;
232 spin_lock_irqsave(&port->port_lock, flags);
233 status = kfifo_put(&port->write_fifo, ch);
234 spin_unlock_irqrestore(&port->port_lock, flags);
241 struct dbc_port *port = tty->driver_data;
244 spin_lock_irqsave(&port->port_lock, flags);
245 dbc_start_tx(port);
246 spin_unlock_irqrestore(&port->port_lock, flags);
251 struct dbc_port *port = tty->driver_data;
255 spin_lock_irqsave(&port->port_lock, flags);
256 room = kfifo_avail(&port->write_fifo);
257 spin_unlock_irqrestore(&port->port_lock, flags);
264 struct dbc_port *port = tty->driver_data;
268 spin_lock_irqsave(&port->port_lock, flags);
269 chars = kfifo_len(&port->write_fifo);
270 spin_unlock_irqrestore(&port->port_lock, flags);
277 struct dbc_port *port = tty->driver_data;
280 spin_lock_irqsave(&port->port_lock, flags);
281 tasklet_schedule(&port->push);
282 spin_unlock_irqrestore(&port->port_lock, flags);
304 struct dbc_port *port = from_tasklet(port, t, push);
305 struct list_head *queue = &port->read_queue;
307 spin_lock_irqsave(&port->port_lock, flags);
308 tty = port->port.tty;
332 n = port->n_read;
338 count = tty_insert_flip_string(&port->port, packet,
343 port->n_read += count;
346 port->n_read = 0;
349 list_move(&req->list_pool, &port->read_pool);
353 tty_flip_buffer_push(&port->port);
358 tasklet_schedule(&port->push);
365 dbc_start_rx(port);
367 spin_unlock_irqrestore(&port->port_lock, flags);
373 struct dbc_port *port = container_of(_port, struct dbc_port, port);
375 spin_lock_irqsave(&port->port_lock, flags);
376 dbc_start_rx(port);
377 spin_unlock_irqrestore(&port->port_lock, flags);
387 xhci_dbc_tty_init_port(struct xhci_dbc *dbc, struct dbc_port *port)
389 tty_port_init(&port->port);
390 spin_lock_init(&port->port_lock);
391 tasklet_setup(&port->push, dbc_rx_push);
392 INIT_LIST_HEAD(&port->read_pool);
393 INIT_LIST_HEAD(&port->read_queue);
394 INIT_LIST_HEAD(&port->write_pool);
396 port->port.ops = &dbc_port_ops;
397 port->n_read = 0;
401 xhci_dbc_tty_exit_port(struct dbc_port *port)
403 tasklet_kill(&port->push);
404 tty_port_destroy(&port->port);
411 struct dbc_port *port = dbc_to_port(dbc);
413 if (port->registered)
416 xhci_dbc_tty_init_port(dbc, port);
419 port->minor = idr_alloc(&dbc_tty_minors, port, 0, 64, GFP_KERNEL);
422 if (port->minor < 0) {
423 ret = port->minor;
427 ret = kfifo_alloc(&port->write_fifo, DBC_WRITE_BUF_SIZE, GFP_KERNEL);
431 ret = xhci_dbc_alloc_requests(dbc, BULK_IN, &port->read_pool,
436 ret = xhci_dbc_alloc_requests(dbc, BULK_OUT, &port->write_pool,
441 tty_dev = tty_port_register_device(&port->port,
442 dbc_tty_driver, port->minor, NULL);
448 port->registered = true;
453 xhci_dbc_free_requests(&port->read_pool);
454 xhci_dbc_free_requests(&port->write_pool);
456 kfifo_free(&port->write_fifo);
458 idr_remove(&dbc_tty_minors, port->minor);
460 xhci_dbc_tty_exit_port(port);
462 dev_err(dbc->dev, "can't register tty port, err %d\n", ret);
469 struct dbc_port *port = dbc_to_port(dbc);
471 if (!port->registered)
473 tty_unregister_device(dbc_tty_driver, port->minor);
474 xhci_dbc_tty_exit_port(port);
475 port->registered = false;
478 idr_remove(&dbc_tty_minors, port->minor);
481 kfifo_free(&port->write_fifo);
482 xhci_dbc_free_requests(&port->read_pool);
483 xhci_dbc_free_requests(&port->read_queue);
484 xhci_dbc_free_requests(&port->write_pool);
495 struct dbc_port *port;
501 port = kzalloc(sizeof(*port), GFP_KERNEL);
502 if (!port)
512 dbc->priv = port;
519 kfree(port);
530 struct dbc_port *port = dbc_to_port(dbc);
533 kfree(port);